CN1917051B - Optical recording method and device - Google Patents

Abstract

In certain inventive aspects there are provided an optical recording method, an evaluation indicator acquiring method, an optical recording apparatus, a CPU device, and a computer program, which can save a test time before recording information so as to record information for a short time. An irradiation condition suitable for recording information on a first recording layer is extracted by recording and reproducing test information accompanied with a change in type of a recording condition with respect to the first recording layer. The test information is recorded on and reproduced from second and third recording layers in a number of times smaller than the number of times for changing the type of the test recording condition in testing the first recording layer. The irradiation condition suitable for recording information on the second or third recording layers is extracted on the basis of the test result for the first recording layer and the test result for the second or third recording layer. Accordingly, it is possible to save the test time for extracting the irradiation condition of the second and third recording layers.

Description

Optic recording method and optical recorder

Technical field

The present invention relates to record information to optical recording media, particularly can shortening information write optic recording method, evaluation indicator acquiring method, optical recorder, micro cpu device and the computer program of fashionable test duration with a plurality of recording layers.

Background technology

Before, use laser with data recording in the optical recorder of optical recording medias (optical recording media) such as well-known DVD, when when the enterprising line data of specific recording medium writes down, generally speaking, before the real data record, carry out test record by the test record zone that use is located in the recording medium, seek to be fit to the record condition of recording medium.

Yet, requiring in the surging optical recorder with huge storage capacity recording at a high speed, when when the enterprising line data of the multi-layered optical recording medium with a plurality of recording layers writes down, because of recording characteristic differences such as each recording layer recording sensitivity, light reflectivity, pyroconductivities, so must seek recording impulse condition corresponding to this each recording layer.

As the prior art of seeking described recording impulse condition, as Figure 25 and shown in Figure 26, general use following method: corresponding to the conditions such as writing speed of each recording medium kind as unit, make the data form that has record recording impulse condition in advance in the storer of record driver (optical recorder), can be that unit carries out good record with each recording layer, and in fact, when the enterprising line data of recording medium writes down, playback record media categories from above-mentioned data form, recording layer, the pairing recording impulse condition of writing speed, and set this condition, carry out data recording.

In addition, consider the individual difference of record driver self or the temperature dependency of inequality or laser etc., generally also use following method: in the test record of before data recording, being carried out, only the condition of recording laser power is adjusted.

[patent documentation 1] Jap.P. spy opens the 2005-100610 communique

[patent documentation 2] Jap.P. spy opens the 2003-22532 communique

[patent documentation 3] Jap.P. spy opens the 2004-171740 communique

[patent documentation 4] Jap.P. spy opens the 2004-247024 communique

[patent documentation 5] WO2002-029791 communique

[patent documentation 6] Jap.P. spy opens the 2003-178448 communique

Yet, in above-mentioned routine techniques, have the 1st problem, that is, to the burden increase of memory span in the limited record driver, when using high capacity memory, because of the cost that involves the record driver increases, thereby limited can corresponding recording medium number.

In addition, there is the 2nd problem, promptly, can not fully solve recording medium that only relies on recording laser power and can remedy and the characteristic inequality that writes down driver, in addition for " optical recording medias of unknown kind " such as recording mediums that be not stored in the recording medium in the record drive memory in advance and after the record driver is sold, sold, though a part is solved with the form of so-called firmware update, also can't fully solve.

Therefore, insider's expectation is according to the recording medium of data recording and the characteristic of record driver, and seeking is the technological development of the best titime condition of unit at short notice with the writing speed.

The present invention develops to form in view of the above problems, and its purpose is; Provide can shortening information test duration before the record so that the optic recording method of recorded information, evaluation indicator acquiring method, optical recorder, single-chip CPU element and computer program at short notice.

Summary of the invention

For addressing the above problem, the present invention proposes a kind of optic recording method, be when the recording medium that comprises multilayer with a recording layer and other recording layers being carried out laser radiation and recorded information record by optical recorder, carry out the record and the regeneration of detecting information at the test zone of each recording layer, derive the illuminate condition of laser, and utilize this illuminate condition to above-mentioned recording medium irradiating laser, recorded information thus, and above-mentioned optical recorder is carried out following steps: reference recording layer testing procedure, on an above-mentioned recording layer, carry out changing the record and the regeneration of corresponding detecting information with the kind of record condition; Reference recording layer illuminate condition derived step, and according to the obtained test result of said reference recording layer testing procedure, derivation is fit to record information to an illuminate condition on the recording layer; Other recording layer testing procedures are less than change number of times in the said reference recording layer testing procedure with the kind of test record condition change number of times, carry out the record and the regeneration of detecting information on above-mentioned other recording layers; And other recording layer illuminate conditions are derived step, test result and above-mentioned other the recording layer testing procedures obtained test result obtained according to said reference recording layer testing procedure derive the illuminate condition that is fit to record information on above-mentioned other recording layers.

According to optic recording method of the present invention, in said reference recording layer testing procedure, on an above-mentioned recording layer, carry out changing the record and the regeneration of corresponding detecting information with the kind of record condition, in addition, derive in the step at said reference recording layer illuminate condition, according to the obtained test result of said reference recording layer testing procedure, derivation is fit to record information to an illuminate condition on the recording layer.

In addition, in above-mentioned other recording layer testing procedures, be less than change number of times in the said reference recording layer testing procedure with the change number of times of the kind of test record condition, on above-mentioned other recording layers, carry out the record and the regeneration of detecting information, and, derive in the step at above-mentioned other recording layer illuminate conditions, test result and above-mentioned other the recording layer testing procedures obtained test result obtained according to said reference recording layer testing procedure, derivation is fit to record information to the illuminate condition on above-mentioned other recording layers, and utilizes this illuminate condition to record information on above-mentioned other recording layers.

In addition, for addressing the above problem, the present invention proposes a kind of optic recording method, be by optical recorder when the recording medium that comprises multilayer with a recording layer and other recording layers is carried out laser radiation and recorded information, carry out the record and the regeneration of detecting information at the test zone of each recording layer, derive the illuminate condition of laser, and utilize this illuminate condition that above-mentioned recording medium is carried out laser radiation, recorded information thus, above-mentioned optical recorder is carried out following steps: reference recording layer testing procedure, on an above-mentioned recording layer, carry out changing the record and the regeneration of corresponding detecting information with the kind of record condition; Reference recording layer illuminate condition derived step, and according to the obtained test result of said reference recording layer testing procedure, derivation is fit to record information to an illuminate condition on the recording layer; Other recording layer testing procedures under any test record condition in the test record condition of said reference recording layer testing procedure, carry out the record and the regeneration of detecting information on above-mentioned other recording layers; And other recording layer illuminate conditions are derived step, test result and above-mentioned other the recording layer testing procedures obtained test result obtained according to said reference recording layer testing procedure derive the illuminate condition that is fit to record information on above-mentioned other recording layers.

According to the present invention, in said reference recording layer testing procedure, on an above-mentioned recording layer, carry out changing the record and the regeneration of corresponding detecting information with the kind of record condition, and, derive in the step at said reference recording layer illuminate condition, according to the obtained test result of said reference recording layer testing procedure, derivation is fit to record information to an illuminate condition on the recording layer.

In addition, in above-mentioned other recording layer testing procedures, under any test record condition in the test record condition of said reference recording layer testing procedure, on above-mentioned other recording layers, carry out the record and the regeneration of detecting information, and, derive in the step at above-mentioned other recording layer illuminate conditions, test result and above-mentioned other the recording layer testing procedures obtained test result obtained according to said reference recording layer testing procedure, derivation is fit to record information to the illuminate condition on above-mentioned other recording layers, and utilizes this illuminate condition to record information on above-mentioned other recording layers.

In addition, for addressing the above problem, the present invention proposes a kind of optic recording method, be by optical recorder during to recording medium laser radiation that comprises multilayer with a recording layer and other recording layers and recorded information, carry out the record and the regeneration of detecting information at the test zone of each recording layer, derive the illuminate condition of laser, and utilize this illuminate condition that above-mentioned recording medium is carried out laser radiation, recorded information thus, and above-mentioned optical recorder is carried out following steps: reference recording layer testing procedure, changing under the corresponding test record condition, on an above-mentioned recording layer, carry out the record and the regeneration of detecting information with condition repeatedly; Reference recording layer illuminate condition derived step, and according to the obtained test result of said reference recording layer testing procedure, derivation is fit to record information to an illuminate condition on the recording layer; Other recording layer testing procedures are less than employed conditional number in the said reference recording layer testing procedure with the test record conditional number, carry out the record and the regeneration of detecting information on above-mentioned other recording layers; And other recording layer illuminate conditions are derived step, test result and above-mentioned other the recording layer testing procedures obtained test result obtained according to said reference recording layer testing procedure derive the illuminate condition that is fit to record information on above-mentioned other recording layers.

According to the present invention, in said reference recording layer testing procedure, on an above-mentioned recording layer, change under the corresponding test record condition in condition repeatedly, carry out the record and the regeneration of detecting information, and, derive in the step at said reference recording layer illuminate condition, according to the obtained test result of said reference recording layer testing procedure, derivation is fit to record information to an illuminate condition on the recording layer.

In addition, in above-mentioned other recording layer testing procedures, be less than employed conditional number in the said reference recording layer testing procedure with the test record conditional number, on above-mentioned other recording layers, carry out the record and the regeneration of detecting information, and, derive in the step at above-mentioned other recording layer illuminate conditions, test result and above-mentioned other the recording layer testing procedures obtained test result obtained according to said reference recording layer testing procedure, derivation is fit to record information to the illuminate condition on above-mentioned other recording layers, and utilizes this illuminate condition to record information on above-mentioned other recording layers.

In addition, for addressing the above problem, the present invention proposes a kind of optic recording method, be by optical recorder when the recording medium that comprises multilayer with a recording layer and other recording layers is carried out laser radiation and recorded information, carry out the record and the regeneration of detecting information at the test zone of each recording layer, derive the illuminate condition of laser, and utilize this illuminate condition that above-mentioned recording medium is carried out laser radiation, recorded information thus, and above-mentioned optical recorder is carried out following steps: reference recording layer testing procedure, under multiple test record condition, on an above-mentioned recording layer, carry out the record and the regeneration of detecting information; Reference recording layer illuminate condition derived step, and according to the obtained test result of said reference recording layer testing procedure, derivation is fit to record information to an illuminate condition on the recording layer; Other recording layer testing procedures carry out the record and the regeneration of detecting information on above-mentioned other recording layers; And other recording layer illuminate conditions are derived step, test result and above-mentioned other the recording layer testing procedures obtained test result obtained according to said reference recording layer testing procedure, derivation is fit to record information to the illuminate condition on above-mentioned other recording layers, and said reference recording layer testing procedure comprises: the 1st detecting information recording step, on an above-mentioned recording layer, write down detecting information, and the 1st detecting information regeneration step, the detecting information that regeneration is write down by above-mentioned the 1st detecting information recording step; Above-mentioned other recording layer testing procedures comprise: the 2nd detecting information recording step, on above-mentioned other recording layers, write down detecting information, and the 2nd detecting information regeneration step, the detecting information that regeneration is write down by above-mentioned the 2nd detecting information recording step; And the conversion times of above-mentioned the 2nd detecting information recording step and above-mentioned the 2nd detecting information regeneration step is made as the conversion times that is less than above-mentioned the 1st detecting information recording step and above-mentioned the 1st detecting information regeneration step.

According to the present invention, in said reference recording layer testing procedure, on an above-mentioned recording layer, under multiple test record condition, to the 1st detecting information regeneration step that detecting information the 1st detecting information recording step that writes down and the detecting information that above-mentioned the 1st detecting information recording step is write down are regenerated, change with specific times.

In addition, reference recording layer illuminate condition derived in the step, and according to the obtained test result of said reference recording layer testing procedure, derivation is fit to record information to an illuminate condition on the recording layer.

In addition, in above-mentioned other recording layer testing procedures, on above-mentioned other recording layers, the 2nd detecting information recording step that detecting information is write down, with the 2nd detecting information regeneration step that the detecting information that above-mentioned the 2nd detecting information recording step is write down is regenerated, change with the conversion times that is less than in the said reference recording layer testing procedure.

In addition, derive in the step at above-mentioned other recording layer illuminate conditions, test result and above-mentioned other the recording layer testing procedures obtained test result obtained according to said reference recording layer testing procedure, derivation is fit to record information to the illuminate condition on above-mentioned other recording layers, and utilizes this illuminate condition to record information on above-mentioned other recording layers.

In addition, for addressing the above problem, the present invention proposes a kind of optic recording method, be by optical recorder when the recording medium that comprises multilayer with a recording layer and other recording layers is carried out laser radiation and recorded information, carry out the record and the regeneration of detecting information at the test zone of each recording layer, derive the illuminate condition of laser, and utilize this illuminate condition that above-mentioned recording medium is carried out laser radiation, recorded information thus, and above-mentioned optical recorder is carried out following steps: reference recording layer testing procedure, on an above-mentioned recording layer, the record and the regeneration of changing the detecting information that is constituted by the stage of record condition are set repeatedly; Reference recording layer illuminate condition derived step, and according to the obtained test result of said reference recording layer testing procedure, derivation is fit to record information to an illuminate condition on the recording layer; Other recording layer testing procedures are less than number of times in the said reference recording layer testing procedure with the number of times that is provided with of the record of detecting information and regeneration, carry out the record and the regeneration of detecting information on above-mentioned other recording layers; And other recording layer illuminate conditions are derived step, test result and above-mentioned other the recording layer testing procedures obtained test result obtained according to said reference recording layer testing procedure derive the illuminate condition that is fit to record information on above-mentioned other recording layers.

According to the present invention, in said reference recording layer testing procedure, on an above-mentioned recording layer, the record and the regeneration of changing the detecting information that is constituted by the stage of record condition repeatedly are set, and, derive in the step at said reference recording layer illuminate condition, according to the obtained test result of said reference recording layer testing procedure, derivation is fit to record information to an illuminate condition on the recording layer.

In addition, in other recording layer testing procedures, the number of times that is provided with the record of detecting information and regeneration is less than number of times in the said reference recording layer testing procedure, on above-mentioned other recording layers, carry out the record and the regeneration of detecting information, and, derive in the step at above-mentioned other recording layer illuminate conditions, test result and above-mentioned other the recording layer testing procedures obtained test result obtained according to said reference recording layer testing procedure, derivation is fit to record information to the illuminate condition on above-mentioned other recording layers, and utilizes this illuminate condition to record information on above-mentioned other recording layers.

In addition, for addressing the above problem, the present invention proposes a kind of evaluation indicator acquiring method, it is the evaluation indicator acquiring method of optic recording method, this optic recording method be by optical recorder when the recording medium that comprises multilayer with a recording layer and other recording layers is carried out laser radiation and recorded information, after the test zone record detecting information of each recording layer, the detecting information that this write down is regenerated, to obtain evaluation index in order to the decision laser irradiation condition, and utilize this evaluation index to adjust the illuminate condition of laser, above-mentioned optical recorder is carried out following steps: the detecting information recording step, on an above-mentioned recording layer, make the record condition phasic Chang of laser power, and the record detecting information; The pulse width adjustment obtains step with what evaluation index changed, when the detecting information that is write down by above-mentioned detecting information recording step is regenerated, obtain, this pulse width adjustment contain with the variation of evaluation index in the pairing impulse phase skew of variation, length offset and the amplitude excursion of laser power record condition at least any; Mutual relationship is tried to achieve step, obtains the variation of above-mentioned laser power and above-mentioned obtained pulse width adjustment and closes the mutually with the variation of evaluation index; The 2nd detecting information recording step on above-mentioned other recording layers, makes the record condition phasic Chang of laser power, and the record detecting information; Calculation procedure makes the result of above-mentioned the 2nd test record meet above-mentioned mutual relationship, to calculate the relation of pulse width adjustment with the variation of laser power in the variation of evaluation index and other recording layers; And the pulse width adjustment utilizes the obtained relation of aforementioned calculation step with the step of trying to achieve of evaluation index, obtains in order to determine the pulse width adjustment evaluation index of pulse width condition in above-mentioned other recording layers.

According to evaluation indicator acquiring method of the present invention, calculate the relation of variation with the variation of pulse width evaluation index of laser power in mutual relationship that the variation of laser power in the above-mentioned recording layer and pulse width evaluation index change and above-mentioned other recording layers, and utilize this relation, obtain in order to determine the pulse width adjustment evaluation index of pulse width condition in above-mentioned other recording layers.

In addition, for addressing the above problem, the present invention proposes a kind of evaluation indicator acquiring method, it is the evaluation indicator acquiring method of optic recording method, this optic recording method be by optical recorder when the recording medium that comprises multilayer with a recording layer and other recording layers is carried out laser radiation and recorded information, after the test zone record detecting information of each recording layer, the detecting information that this write down is regenerated, to obtain the evaluation index of laser irradiation condition, and utilize this evaluation index to adjust the illuminate condition of laser, above-mentioned optical recorder is carried out following steps: the detecting information recording step, on an above-mentioned recording layer, make the record condition phasic Chang of pulse width, and the record detecting information; The laser power adjustment obtains step with what evaluation index changed, to recording detecting information on the above-mentioned recording layer by above-mentioned detecting information recording step when regenerating, obtain the pairing laser power adjustment of the variation evaluation index of pulse width record condition; Mutual relationship is tried to achieve step, obtains the variation of above-mentioned pulse width and the mutual relationship that the variation of evaluation index is used in above-mentioned laser power adjustment; The 2nd detecting information recording step on above-mentioned other recording layers, makes the record condition phasic Chang of pulse width, and the record detecting information; Calculation procedure makes the result of above-mentioned the 2nd test record meet above-mentioned mutual relationship, to calculate the relation of laser power adjustment with the variation of the variation of evaluation index and the pulse width record condition in other recording layers; And the laser power adjustment utilizes the obtained relation of aforementioned calculation step with the step of trying to achieve of evaluation index, obtains in order to determine the laser power adjustment evaluation index of laser power condition in above-mentioned other recording layers.

According to evaluation indicator acquiring method of the present invention, on a recording layer, make the record condition phasic Chang of pulse width, with the record detecting information, and when the detecting information that is write down on the recording layer was regenerated, the record condition of obtaining with pulse width changed pairing laser power adjustment evaluation index.In addition, obtain the variation of pulse width and the mutual relationship that the variation of evaluation index is used in the laser power adjustment.And, for other recording layers, make the record condition phasic Chang of pulse width, with the record detecting information, and make this record result meet above-mentioned mutual relationship, change pairing laser power adjustment evaluation index with the record condition that calculates pulse width in other recording layers.

In addition, for addressing the above problem, the present invention proposes a kind of evaluation indicator acquiring method, it is the evaluation indicator acquiring method of optic recording method, this optic recording method be by optical recorder when the recording layer to recording medium carries out laser radiation and recorded information, on above-mentioned recording layer, carry out the regeneration of recording of information and information, to obtain the evaluation index of laser irradiation condition, and utilize this evaluation index to adjust the illuminate condition of laser, above-mentioned optical recorder is carried out following steps: the information recording step, on above-mentioned recording layer, carry out the record of test record information and user data recorded information, and multiple evaluation index obtain step, the information that above-mentioned information recording step is write down is regenerated, and regenerating information and obtain the multiple evaluation index relevant with laser irradiation condition thus.

According to evaluation indicator acquiring method of the present invention, recorded information on above-mentioned recording layer, and will be with this information regeneration that writes down, and regenerating information is obtained the multiple evaluation index relevant with laser irradiation condition with above-mentioned record condition thus.

In addition, for addressing the above problem, the present invention's proposition possesses the optical recorder of the performance element of the various processes in the above-mentioned optic recording method, the single-chip CPU element that is used for this optical recorder and driving and is used for the CPU of above-mentioned optical recorder to carry out the computer program of above-mentioned optic recording method.

[effect of invention]

According to optic recording method of the present invention, for a recording layer, carry out changing the record and the regeneration of corresponding detecting information with the kind of record condition, according to this obtained test result, derivation is fit to record information to an illuminate condition on the recording layer, in addition, the change number of times that is less than reference recording layer testing procedure with the kind change number of times of test record condition, on other recording layers, carry out the record and the regeneration of detecting information, and according to the test result of a recording layer and the test result of other recording layers, derivation is fit to record information to the illuminate condition on other recording layers, and utilize this illuminate condition on other recording layers, to carry out the information record, therefore can shorten test duration in order to the illuminate condition of deriving other recording layers, so can shortening information test duration before the record, thereby recorded information at short notice.In addition, and before compared, can reduce to be used for the posting field of test record.

In addition, according to optic recording method of the present invention, on a recording layer, carry out changing the record and the regeneration of corresponding detecting information with the kind of record condition, and according to this test result, derivation is fit to record information to an illuminate condition on the recording layer, in addition, under any test record condition in the test record condition of reference recording layer testing procedure, on other recording layers, carry out the record and the regeneration of detecting information, and according to the test result of a recording layer and the test result of other recording layers, derivation is fit to record information to the illuminate condition on other recording layers, utilize this illuminate condition to record information on above-mentioned other recording layers again, therefore can shorten in order to derive the test duration of other recording layer illuminate conditions, so can shortening information test duration before the record, thereby recorded information at short notice.In addition, and before compared, can reduce to be used for the posting field of test record.

In addition, according to optic recording method of the present invention, for a recording layer, changing record and the regeneration of carrying out detecting information under the corresponding test record condition with condition repeatedly, and according to this test result, derivation is fit to record information to an illuminate condition on the recording layer, in addition, be less than employed conditional number in the reference recording layer testing procedure with the test record conditional number, on other recording layers, carry out the record and the regeneration of detecting information, and test result and other the recording layer testing procedures obtained test result obtained according to reference recording layer testing procedure, derivation is fit to record information to the illuminate condition on other recording layers, and utilize this illuminate condition on other recording layers, to carry out the information record, therefore can shorten in order to derive the test duration of other recording layer illuminate conditions, so can shortening information test duration before the record, thereby recorded information at short notice.In addition, and before compared, can reduce to be used for the posting field of test record.

In addition, according to optic recording method of the present invention, on a recording layer, the record that carries out detecting information under multiple test record condition is during with regeneration, this record is changed with specific times with regeneration, and according to this test result, derivation is fit to record information to an illuminate condition on the recording layer, in addition, the record that carries out detecting information on other recording layers is during with regeneration, this record is changed with the conversion times that is less than in the above-mentioned recording layer with regeneration, and according to the test result of a recording layer and the test result of other recording layers, derivation is fit to record information to the illuminate condition on other recording layers, and utilize this illuminate condition to record information on above-mentioned other recording layers, therefore can shorten in order to deriving the test duration of other recording layer illuminate conditions, thus can shortening information write down test duration, thereby recorded information at short notice.In addition, and before compared, can reduce to be used for the posting field of test record.

In addition, according to optic recording method of the present invention, on a recording layer, the record and the regeneration of changing the detecting information that is constituted by the stage of record condition repeatedly are set, and according to this test result, derivation is fit to record information to an illuminate condition on the recording layer, in addition, on other recording layers, the number of times in the test that number of times is less than an above-mentioned recording layer of being provided with the record of detecting information and regeneration, carry out the record and the regeneration of detecting information, and according to the test result of a recording layer and the test result of other recording layers, derivation is fit to record information to the illuminate condition on other recording layers, and utilize this illuminate condition to record information on above-mentioned other recording layers, therefore can shorten in order to deriving the test duration of other recording layer illuminate conditions, thus can the preceding test duration of shortening information record, thus recorded information at short notice.In addition, and before compared, can reduce to be used for the posting field of test record.

In addition, according to evaluation indicator acquiring method of the present invention, calculate the mutual relationship of the variation of the variation of laser power in the recording layer and pulse width evaluation index, and the relation of the variation of the variation of laser power and pulse width evaluation index in other recording layers, and utilize this relation, obtain in order to determine the pulse width adjustment evaluation index of pulse width condition in above-mentioned other recording layers, therefore calculate the pulse width evaluation index in above-mentioned other recording layers, and need not carry out actual test record in order to obtain this pulse width evaluation index, therefore can shorten in order to derive the test duration of other recording layer illuminate conditions, so can shortening information test duration before the record, thereby recorded information at short notice.In addition, and before compared, can reduce to be used for the posting field of test record.

In addition, according to evaluation indicator acquiring method of the present invention, the record result who makes the record condition phasic Chang of pulse width in other recording layers and test, meet the variation of pulse width in the recording layer and the mutual relationship that the variation of evaluation index is used in the laser power adjustment, and the record condition that calculates pulse width in other recording layers changes pairing laser power adjustment evaluation index, therefore need not with the kind of evaluation index the unit record detecting information, so can shorten the test duration, and can shortening information test duration before the record, thereby recorded information at short notice.In addition, and before compared, can reduce to be used for the posting field of test record.

In addition, according to evaluation indicator acquiring method of the present invention, on recording layer, make the record condition phasic Chang and write down detecting information, and the detecting information that will write down thus regeneration, according to this regenerating information and above-mentioned record condition, obtain the multiple evaluation index relevant with laser irradiation condition, therefore need not with the kind of evaluation index the unit record detecting information, so can shorten the test duration, and the test duration before can shortening information record, thus recorded information at short notice.In addition, and before compared, can dwindle the posting field that is used for test record.

In addition, according to optical recorder of the present invention, can be easy to realize above-mentioned optic recording method.

In addition, according to micro cpu device of the present invention, can be easy to realize above-mentioned optic recording method.

In addition, according to computer program of the present invention, use any CPU can be easy to realize above-mentioned optic recording method.

Description of drawings

Fig. 1 is the optical recorder structure in the present invention's the 1st example and the synoptic diagram of laser disc structure.

Fig. 2 is recording processing is carried out in explanation to the 1st recording layer in the present invention's the 1st example a process flow diagram.

Fig. 3 is recording processing is carried out in explanation to the recording layer except that the 1st recording layer in the present invention's the 1st example a process flow diagram.

Fig. 4 is the key diagram of laser power adjustment with interim laser power variation in the test record.

Fig. 5 is the characteristic relation synoptic diagram of expression laser power and β relation.

Fig. 6 is the characteristic relation synoptic diagram of the impulse phase correction parameter in expression laser power and the impulse phase relation.

Fig. 7 is the offset of indicating impulse rise and fall and the characteristic relation synoptic diagram of the impulse phase correction parameter in the impulse phase relation.

Fig. 8 is the characteristic relation synoptic diagram of the phase correction parameter in the relation of expression laser power and impulse phase.

Fig. 9 is the offset of indicating impulse rise and fall and the characteristic relation synoptic diagram of the impulse phase correction parameter in the impulse phase relation.

Figure 10 is the characteristic relation synoptic diagram of expression laser power and asymmetry relation.

Figure 11 is the characteristic relation synoptic diagram of the phase correction parameter in expression laser power and the amplitude relation.

Figure 12 is the offset of indicating impulse rise and fall and the characteristic relation synoptic diagram of the impulse phase correction parameter in the impulse phase relation.

Figure 13 is the characteristic relation synoptic diagram of the phase correction parameter in expression laser power and the amplitude relation.

Figure 14 is the offset of indicating impulse rise and fall and the characteristic relation synoptic diagram of the impulse phase correction parameter in the impulse phase relation.

Figure 15 is recording processing is carried out in explanation to the recording layer except that the 1st recording layer in the present invention's the 2nd example a process flow diagram.

Figure 16 is recording processing is carried out in explanation to the 1st recording layer in the present invention's the 3rd example a process flow diagram.

Figure 17 is recording processing is carried out in explanation to the recording layer except that the 1st recording layer in the present invention's the 3rd example a process flow diagram.

Figure 18 is recording processing is carried out in explanation to the recording layer except that the 1st recording layer in the present invention's the 4th example a process flow diagram.

Figure 19 is recording processing is carried out in explanation to the 1st recording layer in the present invention's the 5th example a process flow diagram.

Figure 20 is recording processing is carried out in explanation to the recording layer except that the 1st recording layer in the present invention's the 5th example a process flow diagram.

Figure 21 is recording processing is carried out in explanation to the recording layer except that the 1st recording layer in the present invention's the 6th example a process flow diagram.

Figure 22 is recording processing is carried out in explanation to the 1st recording layer in the present invention's the 7th example a process flow diagram.

Figure 23 is recording processing is carried out in explanation to the recording layer except that the 1st recording layer in the present invention's the 7th example a process flow diagram.

Figure 24 is recording processing is carried out in explanation to the recording layer except that the 1st recording layer in the present invention's the 8th example a process flow diagram.

Figure 25 is the figure hoist pennants of first precedent.

Figure 26 is the tactful form synoptic diagram of first precedent.

Figure 27 is recording processing is carried out in explanation to the recording layer in the present invention's the 1st example a process flow diagram.

Figure 28 is the key diagram of laser power adjustment with the interim laser power variation in the test record.

Figure 29 is the characteristic relation synoptic diagram of expression laser power and β relation.

Figure 30 is the characteristic relation synoptic diagram of expression laser power and impulse phase relation.

Figure 31 is the offset of indicating impulse rise and fall and the characteristic relation synoptic diagram of the impulse phase correction parameter in the impulse phase relation.

Figure 32 is the characteristic relation synoptic diagram of the phase correction parameter in expression laser power and the impulse phase relation.

Figure 33 is the offset of indicating impulse rise and fall and the characteristic relation synoptic diagram of the impulse phase correction parameter in the impulse phase relation.

[explanation of symbol]

10 laser discs (recording medium)

11 the 1st recording layers (recording layer)

12 the 2nd recording layers (other recording layers)

13 the 3rd recording layers (other recording layers)

100 optical recorders

110 optical pick-ups

111 laser diodes (LD)

112 photodetectors (PD)

113 collimation lenses

114 object lens

115 detect lens

116 beam splitters

The 121LD driver

122 cutting machines

123 demodulator circuits

124 eigenwert test sections

125 single-chip CPU elements (CPU)

126 memory circuits

127 storeies

128 interfaces (I/F)

131 display parts

132 operating portions

Embodiment

Below, with reference to a description of drawings example of the present invention.

Fig. 1 is the optical recorder structure in the present invention's the 1st example and the synoptic diagram of laser disc structure.Among the figure, 10 expression laser discs, be multi-layered optical recording medium such as well-known DVD, HD-DVD, Blu-ray (blue light) laser disc, in this example, expression begins to have successively the optical recording media of 3 recording layers of the 1st recording layer the 11, the 2nd recording layer the 12, the 3rd recording layer 13 from distance coplanar laser illumination highest distance position.Moreover, be to utilize optical recording media to describe in this example with 3 recording layers, also can utilize optical recorder 100 to carry out recording of information regeneration with optical recording media as laser disc 10 with recording layer more than 2 layers.

100 expression optical recorders possess optical pick-up 110, laser diode (hereinafter referred to as LD) driver 121, cutting machine 122, demodulator circuit 123, eigenwert test section 124, single-chip CPU element (hereinafter referred to as CPU) 125, storer 127 and interface (hereinafter referred to as I/F) 128.Moreover only announcement has the structure division of special relationship with the present invention and describes herein.

And, in the optical recorder 100, be connected with display part 131 that constitutes by personal computer or display etc. and the operating portion 132 that constitutes by keyboard etc.

Optical pick-up 110 has laser diode (hereinafter referred to as LD) 111, photodetector (hereinafter referred to as PD) 112, collimation lens 113, object lens 114, detects lens 115 and beam splitter 116.The laser that penetrates from LD111 sees through collimation lens 113, beam splitter 116 exposes on the laser disc 10 with object lens 114.

In addition,, reflect by beam splitter 116, and inject among the PD112 through after the object lens 114 by laser disc 10 laser light reflected via detecting lens 115.The corresponding electric current of light value of the PD112 output and the light of injecting.

LD driver 121 supplies to drive current among the LD111, so that LD111 is luminous according to the tracer signal from 125 inputs of CPU element.

122 pairs of output currents of cutting machine cut in specific threshold value, and are translated into the binaryzation voltage signal and export from PD112.

Demodulator circuit 123 is to carrying out demodulation from cutting machine 122 outputs and encoded two-value signal, and output to the circuit of CPU125, for example, will be from the binaryzation voltage signal of cutting machine 122 outputs, promptly the signal that carries out the EFM modulating-coding with the pulse width of 3T～11T after the demodulation, outputs to the digital signal that is obtained among the CPU125 in addition.

Eigenwert test section 124 input is from the current signal that PD112 exported, according to this current value, and by from the reflected light of laser disc 10 and the detected characteristics value outputs to it among CPU125 as numerical information.As the eigenwert that reflected light detected thus, for example exist with ... recording laser power or recording impulse condition, and have corresponding to the eigenwert that makes recording impulse condition the best and get final product, in this example, detect β, asymmetry (Asymmetry), phase place, amplitude etc.

CPU125 is well-known single-chip CPU element, possesses memory circuit 126, stores within this memory circuit 126 to use so that the computer program of CPU operation.In addition, portion of CPU125 controlling and driving mechanism (not shown), adjust position, tracking, the focal length of optical pick-up 110 and the rotation drive controlling of carrying out laser disc 10, and according to the data form that stores in the storer 127, to record the laser disc 10 from the information of outside input and (write), perhaps playback record in the laser disc 10 information and output to external device (ED).And, by following processing, to laser disc 10 recorded informations the time, test, obtain best lasing condition, to carry out the information record.

Memory circuit 127 is connected with CPU125, and portion will arrive data form with the pairing data recording of other kind laser discs, as the tactful form identical with first precedent within it.

I/F128 is the interface that is connected with outside display part 131 and operating portion 132 in order to CPU, and the record regenerating information between external device (ED) and the CPU125 is transmitted.

In the said structure, utilize, laser disc 10 carried out recording of information regeneration from the laser of LD111 output, and personal computer external device (ED)s such as (PC) between carry out the transmission and the reception of information.Moreover optical recorder 100 is in recording information to laser disc 10 time, successively with the journal information of the 1st recording layer the 11, the 2nd record the 12, the 3rd recording layer 13.

When laser disc 10 is carried out the information record, recorded information is encoded, recorded information after utilizing CPU125 to this coding is handled, the decision conduct is to the strategy of the record condition of laser disc 10 thus, utilize LD driver 121 that this strategy is converted to recording impulse, and from LD111 output according to this recording impulse and the laser of chopping.

LD driver 121 drives LD111 according to the recording impulse of being imported, LD111 is the corresponding and control output laser of recording impulse therewith, make this in check laser via collimation lens 113, beam splitter 116, object lens 114, shine on the laser disc 10 that rotates in linear velocity is fixed or rotational speed is fixing mode, be listed as the recording figure forming that is constituted by pit and gap and record on the laser disc 10 corresponding with the expection recorded information thus.

In addition, when recording information in the laser disc 10, as everyone knows, carry out the regeneration of the record and the detecting information of detecting information, to determine best laser irradiation condition at the test zone of laser disc 10.In the optical recorder 100 of this example, determine the test duration of this laser irradiation condition and before compared and to shorten.

Below, describe the method that determines laser irradiation condition in this example in detail.

Fig. 2 and Fig. 3 are recording processing is carried out in explanation to the recording layer in the 1st example process flow diagrams.The computer program of carrying out this processing is stored in the memory circuit 126 of CPU125 in advance, carries out above processing by CPU125.In addition, in this example, the test processes when recording information to the 1st recording layer 11 of laser disc 10, with before roughly the same, and the test processes when recording information to recording layer except that the 1st recording layer 11, different with test processes in the 1st recording layer 11, the former can shorten the time.

That is, when recording the information in the 1st recording layer 11, carry out processing shown in Figure 2.During this handles, make and previous identical recording laser intensity optimization (OPC:Optimum Power Control, best power control, hereinafter referred to as OPC), under following two kinds of test record conditions, test thus, promptly, the laser power adjustment test record of specific times, with the pulse width adjustment test record of specific times, and with the information regeneration (SA1) that is write down, detect under the laser irradiation condition parameter (evaluation index) (SA2).As this parameter, for example enumerate β (asymmetry), laser radiation power, impulse phase etc. during DVD.In addition, the laser power adjustment is to make laser power (Wrigte PW) phasic Chang and carry out with test record as shown in Figure 4, and the pulse width adjustment is to make the pulse width phasic Chang and carry out with test record similarly.Moreover, when carrying out the above-mentioned parameter detection, use under the situation of the data of the tactful form of in can using storer 127, being stored, and for the laser disc 10 of the unknown kind of the data that can't use the tactful form of being stored in the storer 127, then carry out well-known automatic strategy and detect and handle.

Secondly, derive characteristic relation (SA3) by the above-mentioned parameter of obtaining.As this characteristic relation, the for example offset of the characteristic relation of the phase correction parameter in the characteristic relation of the laser power (Wrigte PW) of induced representation shown in chart among Fig. 5 and β relation, the laser power (Wrigte PW) of expression shown in chart among Fig. 6 and the impulse phase relation and the pulse rise and fall of expression shown in chart among Fig. 7 (characteristic relation of the impulse phase correction parameter in Pulse (Topr, Tlast)) and the impulse phase relation.Herein, the detecting information that writes down by making the laser power phasic Chang, two kinds of parameters of induced representation (evaluation index), that is: the characteristic relation of laser power (Wrigte PW) and the β relation of expression shown in chart among Fig. 5 is with the characteristic relation of phase correction parameter in the laser power (WrigtePW) of expression shown in chart among Fig. 6 and the impulse phase relation.

After this, use, derive the optimum value (SA4) of laser power and pulse width by the obtained parameter of the above-mentioned characteristic relation of having obtained.In addition, judge whether this optimum value after implementing adjustment under the writing speed of expection, can be applicable to the information record (SA5) that is carried out with certain quality.Moreover, this adjustment be in laser power that shines the laser on the recording layer and the pulse width any is adjusted at least, make the interim record condition of laser power and pulse width change pairing laser power adjustment, become the particular value that is fit to carry out the information record with certain quality with parameter (evaluation index) and pulse width adjustment parameter (evaluation index).This also can carry out OPC in adjusting.

When the result of determination of above-mentioned SA5 can where applicable, forward the processing of following SA8 to, when it cannot where applicable, set for and make the specific writing speed after writing speed reduces or set record termination (SA6) for, judge whether to end (SA7), when record is ended, forward the processing of following SA10 to for record, when setting, forward the processing of above-mentioned SA5 in that writing speed is reduced.

When the result of determination of above-mentioned SA5 be above-mentioned optimum value go for expecting writing speed the time, judged result and contents processing and parameter (evaluation index) are recorded in the laser disc 10 with the information of adjusting the result, and make it corresponding and record (SA8) in the storer 127 with the medium ID of laser disc 10.In this way, keep, can thereafter in laser disc 10 enterprising line items of the same race the time, apply flexibly this information as record.Moreover, also can write down employed condition data in the test record corresponding to above-mentioned information.And, also above-mentioned information only can be recorded in any of laser disc 10 or storer 127.In addition, can only write down judged result or judge any information of corresponding contents processing therewith, and recording parameters (evaluation index) or utilize any information of the adjustment result that this parameter carries out only.

After this, use the above-mentioned optimum value of obtaining that laser disc 10 is carried out information record (SA9).Secondly, make above-mentioned judged result and contents processing be shown in display part 131 (SA10), and finish information record the 1st recording layer 11.Moreover, also can be only with judged result or judge corresponding contents processing therewith any be shown in display part 131.

In addition, when other recording layers 12,13 except that the 1st recording layer 11 being carried out the information record, carry out processing as shown in Figure 3.

That is, record information to the recording layer 12,13 o'clock except that the 1st recording layer 11, carry out processing shown in Figure 3.During this handles, by with previous identical OPC, only be less than number of times in the 1st recording layer 11 with the record number of times, carry out only being the test under laser power adjustment usefulness a kind of test record condition of test record, and with the information regeneration (SB1) that is write down, detect under the laser irradiation condition parameter (evaluation index) (SB2).In addition, the laser power adjustment is to make laser power (Wrigte PW) phasic Chang and carry out with test record as shown in Figure 4.

Secondly, derive characteristic relation (SB3) by the above-mentioned parameter of obtaining.As this characteristic relation, for example, the characteristic relation of the phase correction parameter in the laser power (Wrigte PW) of induced representation shown in chart among Fig. 8 and the impulse phase relation.

After this, the parameter that utilization is obtained by the characteristic relation of being obtained in above-mentioned characteristic relation of obtaining and the 1st recording layer 11, impulse phase correction parameter in pulse position skew and the impulse phase relation in other recording layers 12,13 of prediction expression, the i.e. offset of the pulse rise and fall shown in chart among Fig. 9 (characteristic relation (SB4) of the impulse phase correction parameter in Pulse (Topr, Tlast)) and the impulse phase relation.

Secondly, utilize above-mentioned characteristic relation and derive the optimum value (SB5) of laser power and pulse width.In addition, judge whether this optimum value after implementing adjustment under the writing speed of expection, can be applicable to the information record (SB6) that is carried out with certain quality.Moreover, this adjustment be in laser power that shines the laser on the recording layer and the pulse width any is adjusted at least, make the interim record condition of laser power and pulse width change pairing laser power adjustment, become the particular value that is fit to carry out the information record with certain quality with parameter (evaluation index) and pulse width adjustment parameter (evaluation index).This also can carry out OPC in adjusting.

When the result of determination of above-mentioned SB6 can where applicable, forward the processing of following SB9 to, when the result cannot where applicable, setting for to make the specific writing speed after writing speed reduces or set for makes record end (SB7), judge whether to end (SB8), when record is ended, forward the processing of following SB11 to for record, when setting, forward the processing of above-mentioned SB6 in that writing speed is reduced.Moreover writing speed is reduced can not where applicable, also can replace record and end, and begin to repeat from the processing of above-mentioned SB1 once more.

When the result of determination of above-mentioned SB6 be above-mentioned optimum value go for expecting writing speed the time, judged result and contents processing and parameter (evaluation index) are recorded in the laser disc 10 with the information of adjusting the result, and make it corresponding and record (SB9) in the storer 127 with the medium ID of laser disc 10.

After this, use the above-mentioned optimum value of obtaining that laser disc 10 is carried out information record (SB10).Secondly, make above-mentioned judged result and contents processing be shown in display part 131 (SB12), and finish information record the 2nd or the 3rd recording layer 12,13.

According to above-mentioned example, the 1st recording layer 11 is carried out changing with the kind of record condition the record and the regeneration of corresponding detecting information, and according to obtained thus test result, derivation is fit to record information to the illuminate condition on the 1st recording layer 11, in addition, kind change number of times with the test record condition is less than the change number of times that is carried out in the test of the 1st recording layer, at the 2nd and the 3rd recording layer 12, carry out the record and the regeneration of detecting information on 13, and test result and the 2nd or the 3rd recording layer 12 according to the 1st recording layer 11,13 test result, derivation is fit to record information to the 2nd or the 3rd recording layer 12, illuminate condition on 13, and utilize this illuminate condition to the 2nd or the 3rd recording layer 12,13 carry out the information record, thereby can shorten in order to derive the 2nd and the 3rd recording layer 12, the test duration of 13 illuminate condition, so can shortening information test duration before the record, thereby recorded information at short notice.

In addition, in the test record of the 2nd or the 3rd recording layer 12,13, only make the test of laser power variation, and do not use more time and test zone to make the test of pulse width variation, therefore can further shorten the test duration.

As mentioned above, in common test record, obtain the characteristic relation of laser power in test, thus characteristic relation and derive best laser power to β in the laser power adjustment; Obtain the characteristic relation of pulse to phase deviation in the pulse width adjustment in testing, characteristic relation is obtained the i.e. strategy of best pulse width thus; And in this example,, only carry out laser power adjustment test about the recording layer except that the 1st recording layer 11, and the test record conditional number is reduced with after shortening the test duration, can derive strategy with optimal laser power and pulse width.

And, according to the optical recorder 100 of this example, can be easy to realize above-mentioned optic recording method.In addition, according to the micro cpu device 125 of this example, can be easy to realize above-mentioned optic recording method.In addition, according to the computer program of this example, using arbitrarily, CPU can be easy to realize above-mentioned optical recorder 100 and optic recording method.

Moreover above-mentioned example is to exemplify to use well-known multilayer DVD to be illustrated as laser disc 10, and when using HD-DVD as laser disc 10, also can utilize same processing and obtains above-mentioned effect.In addition, when using well-known Blu-ray video disc as laser disc 10, because it is different with the specification of DVD, therefore in the 1st recording layer, the characteristic relation of the laser power (Write PW) of induced representation shown in chart among Figure 10 and asymmetry (Asymmetry) relation, the characteristic relation of the phase correction parameter in the laser power (Write PW) of expression shown in chart among Figure 11 and the amplitude relation, and the offset (Pulse (Topr of the pulse rise and fall of expression shown in chart among Figure 12, Tlast)) with amplitude relation in the characteristic relation of phase correction parameter, and in the recording layer except that the 1st recording layer, obtain the characteristic relation of the phase correction parameter in the laser power (Write PW) of expression shown in chart among Figure 13 and the amplitude relation by test, mutual relationship by above-mentioned characteristic relation, offset (Pulse (the Topr of the pulse rise and fall in other recording layers of prediction expression shown in chart among Figure 14, Tlast)) with amplitude relation in the characteristic relation of phase correction parameter, so can obtain optimum value in other recording layers.In addition, so-called pulse width adjustment is meant phase deviation, length offset, amplitude excursion with parameter (evaluation index).

Secondly, the 2nd example of the present invention is described.

Apparatus structure in this example is identical with above-mentioned the 1st example, and be with the difference of the 1st example: in the 2nd example, store the mutually different computer program of recording processing among the employed CPU125 with recording layer 12,13 except that the 1st recording layer 11.In the following description, the part that has a same structure with the 1st example uses same-sign to be illustrated.

That is, in the optical recorder 100 of this example, identical to the processing of the 1st example shown in the process flow diagram among the information recording processing of the 1st recording layer 11 in the laser disc 10 and Fig. 2.And, to the information recording processing of the recording layer except that the 1st recording layer 11 12,13 shown in the process flow diagram of Figure 15, by with previous identical OPC, only be less than number of times in the 1st recording layer 11 with the record number of times, carry out only being the test under pulse width adjustment usefulness a kind of test record condition of test record, and with the information regeneration (SC1) that is write down, detect under the laser irradiation condition parameter (evaluation index) (SC2).In addition, pulse width adjustment test record is to make the pulse width phasic Chang and carry out.

Secondly, derive characteristic relation (SC3) by the above-mentioned parameter of obtaining.As this characteristic relation, for example, the offset of the induced representation pulse rise and fall as shown in Figure 9 (characteristic relation of the impulse phase correction parameter in Pulse (Topr, Tlast)) and the impulse phase relation.

After this, utilize the characteristic relation of being obtained in above-mentioned characteristic relation of obtaining and the 1st recording layer 11 and the parameter that obtains, impulse phase correction parameter in other recording layers 12,13 of prediction expression in the offset relation of laser power and pulse, the i.e. characteristic relation (SC4) of the phase correction parameter in laser power as shown in Figure 8 (Wrigte PW) and the impulse phase relation.

Secondly, utilize above-mentioned characteristic relation and derive the optimum value (SC5) of laser power and pulse width.In addition, judge whether this optimum value after implementing adjustment under the writing speed of expection, can be applicable to the information record (SC6) that is carried out with certain quality.Moreover, this adjustment be in laser power that shines the laser on the recording layer and the pulse width any is adjusted at least, make the interim record condition of laser power and pulse width change pairing laser power adjustment, become the particular value that is fit to carry out the information record with certain quality with parameter (evaluation index) and pulse width adjustment parameter (evaluation index).This also can carry out OPC in adjusting.

When the result of the judgement of above-mentioned SC6 can where applicable, forward the processing of following SC9 to, when the result cannot where applicable, set for and make the specific writing speed after writing speed reduces or set termination record (SC7) for, judge whether to end (SC8), when record is ended, forward the processing of following SC11 to for record, when setting, forward the processing of above-mentioned SC6 in that writing speed is reduced.Moreover writing speed is reduced can not where applicable, also can replace record and end, and begin to repeat from the processing of above-mentioned SC1 once more.

The result of determination of above-mentioned SC6 be above-mentioned optimum value go for expecting writing speed the time, judged result and contents processing and parameter (evaluation index) are recorded in the laser disc 10 with the information of adjusting the result, and make it corresponding and record (SC9) in the storer 127 with the medium ID of laser disc 10.In this way, keep, can thereafter in laser disc 10 enterprising line items of the same race the time, apply flexibly this information as record.Moreover, also can write down employed condition data in the test record corresponding to above-mentioned information.And, also above-mentioned information only can be recorded in any of laser disc 10 or storer 127.In addition, can only write down judged result or judge any information of corresponding contents processing therewith, and recording parameters (evaluation index) or utilize any information of the adjustment result that this parameter carries out only.

After this, use the above-mentioned optimum value of obtaining that laser disc 10 is carried out information record (SC10).Secondly, make above-mentioned judged result and contents processing be shown in display part 131 (SC12), and finish information record the 2nd or the 3rd recording layer 12,13.Moreover, also can be only with judged result or judge corresponding contents processing therewith any be shown in display part 131.

According to above-mentioned example, the 1st recording layer 11 is carried out changing with the kind of record condition the record and the regeneration of corresponding detecting information, and according to obtained thus test result, derivation is fit to record information to the illuminate condition on the 1st recording layer 11, in addition, kind change number of times with the test record condition is less than the change number of times that is carried out in the test of the 1st recording layer, at the 2nd and the 3rd recording layer 12, carry out the record and the regeneration of detecting information on 13, and test result and the 2nd or the 3rd recording layer 12 according to the 1st recording layer 11,13 test result, derivation is fit to record information to the 2nd or the 3rd recording layer 12, illuminate condition on 13, and utilize this illuminate condition to the 2nd or the 3rd recording layer 12,13 carry out the information record, thereby can shorten in order to derive the 2nd and the 3rd recording layer 12, the test duration of 13 illuminate condition, so can shortening information test duration before the record, thereby recorded information at short notice.

In addition, in the test record of the 2nd or the 3rd recording layer 12,13, only make the test of pulse width variation, therefore can further shorten the test duration.

As mentioned above, in common test record, obtain the characteristic relation of laser power in test, thus characteristic relation and derive best laser power to β in the laser power adjustment; Obtain the characteristic relation of pulse to phase deviation in the pulse width adjustment in testing, characteristic relation is obtained the i.e. strategy of best pulse width thus; And in this example,, only carry out pulse width adjustment test about the recording layer except that the 1st recording layer 11, and the test record conditional number is reduced with after shortening the test duration, can derive strategy with optimal laser power and pulse width.

Moreover, above-mentioned example is to exemplify to use well-known multilayer DVD to be illustrated as laser disc, and when similarly using HD-DVD or well-known Blu-ray video disc as laser disc 10, also can utilize same processing to obtain above-mentioned effect with the 1st example.

Secondly, the 3rd example of the present invention is described.

Apparatus structure in this example is identical with above-mentioned the 1st example, and be: in the 3rd example, store the mutually different computer program of recording processing of each recording layer 11,12,13 in the laser disc 10 among the employed CPU125 with the difference of the 1st example.In the following description, the part that has a same structure with the 1st example uses same-sign to be illustrated.

Figure 16 and Figure 17 are recording processing is carried out in explanation to the recording layer in the 3rd example process flow diagrams.The computer program of carrying out this processing is stored in the memory circuit 126 of CPU125 in advance, and carries out above-mentioned processing by CPU12.And, in this example, the test processes when recording information to the 1st recording layer 11 of laser disc 10 is with before roughly the same, and the test processes when recording information to recording layer except that the 1st recording layer 11, different with the test processes in the 1st recording layer 11, the former can shorten the time.

That is, when recording information to the 1st recording layer 11, carry out the processing shown in the process flow diagram among Figure 16.During this handles, by with previous identical OPC, under following two kinds of test record conditions, test, promptly, the laser power adjustment test record of specified conditions number, with the pulse width adjustment test record of specified conditions number, and with the information regeneration (SD1) that is write down, detect under the laser irradiation condition parameter (evaluation index) (SD2).

For example, as being used for laser power adjustment test record, be laser power be 1mW, 2mW ..., 10mW 10 conditions under carry out.In addition, the pulse width adjustment is carried out under 10 different conditions similarly with test record.

In addition, as parameter, for example when DVD, enumerate β (asymmetry), laser radiation power, impulse phase etc.And the laser power adjustment makes laser power (Wrigte PW) phasic Chang and carries out with test record as shown in Figure 4, and the pulse width adjustment with test record similarly makes the pulse width phasic Chang and carries out.Moreover, when carrying out the above-mentioned parameter detection, use under the situation of the data of the tactful form of in can using storer 127, being stored, and for the laser disc 10 of the unknown kind of the data that can't use the tactful form of being stored in the storer 127, then carry out well-known automatic strategy and detect and handle.

Secondly, derive characteristic relation (SD3) by the above-mentioned parameter of obtaining.As this characteristic relation, the for example offset of the characteristic relation of the phase correction parameter in the characteristic relation of the laser power (Wrigte PW) of induced representation shown in chart among Fig. 5 and β relation, the laser power (Wrigte PW) of expression shown in chart among Fig. 6 and the impulse phase relation and the pulse rise and fall of expression shown in chart among Fig. 7 (characteristic relation of the impulse phase correction parameter in Pulse (Topr, Tlast)) and the impulse phase relation.Herein, the detecting information that writes down by making the laser power phasic Chang, two kinds of parameters of induced representation (evaluation index), that is: the characteristic relation of the laser power shown in the chart (Wrigte PW) and β relation in the presentation graphs 5 is with the characteristic relation of phase correction parameter in the laser power (WrigtePW) of expression shown in chart among Fig. 6 and the impulse phase relation.

After this, use, derive the optimum value (SD4) of laser power and pulse width by the obtained parameter of the above-mentioned characteristic relation of having obtained.In addition, judge whether this optimum value after implementing adjustment under the writing speed of expection, can be applicable to the information record (SD5) that is carried out with certain quality.Moreover, this adjustment be in laser power that shines the laser on the recording layer and the pulse width any is adjusted at least, make the interim record condition of laser power and pulse width change pairing laser power adjustment, become the particular value that is fit to carry out the information record with certain quality with parameter (evaluation index) and pulse width adjustment parameter (evaluation index).This also can carry out OPC in adjusting.

When the result of determination of above-mentioned SDS can where applicable, forward the processing of following SD8 to, when it cannot where applicable, setting for to make the specific writing speed after writing speed reduces or set for makes record end (SD6), judge whether to end (SD7), when record is ended, forward the processing of following SD10 to for record, when setting, forward the processing of above-mentioned SD5 in that writing speed is reduced.

When the result of determination of above-mentioned SD5 be above-mentioned optimum value go for expecting writing speed the time, judged result and contents processing and parameter (evaluation index) are recorded in the laser disc 10 with the information of adjusting the result, and make it corresponding and record (SD8) in the storer 127 with the medium ID of laser disc 10.In this way, keep, can thereafter in laser disc 10 enterprising line items of the same race the time, apply flexibly this information as record.Moreover, also can write down employed condition data in the test record corresponding to above-mentioned information.And, also above-mentioned information only can be recorded in any of laser disc 10 or storer 127.In addition, can only write down judged result or judge any information of corresponding contents processing therewith, and recording parameters (evaluation index) or utilize any information of the adjustment result that this parameter carries out only.

After this, use the above-mentioned optimum value of obtaining that laser disc 10 is carried out information record (SD9).Secondly, make above-mentioned judged result and contents processing be shown in display part 131 (SD10), and finish information record the 1st recording layer 11.Moreover, also can be only with judged result or judge corresponding contents processing therewith any be shown in display part 131.

In addition, when other recording layers 12,13 except that the 1st recording layer 11 being carried out the information record, carry out the processing shown in process flow diagram among Figure 17.

That is, record information to the recording layer 12,13 o'clock except that the 1st recording layer 11, carry out processing shown in Figure 17.During this handles, by with previous identical OPC, only be less than conditional number in the 1st recording layer 11 with the record strip number of packages, carry out only being the test under laser power adjustment usefulness a kind of test record condition of test record, and with the information regeneration (SE1) that is write down, detect under the laser irradiation condition parameter (evaluation index) (SE2).In addition, the laser power adjustment is to make laser power (Wrigte PW) phasic Chang and carry out with test record as shown in Figure 4.Herein, use 10 conditions of using in the test record of the 1st recording layer 11 (1mW ..., 10mW) in 5 conditions carry out test record.

Secondly, derive characteristic relation (SE3) by the above-mentioned parameter of obtaining.As this characteristic relation, for example, the characteristic relation of the phase correction parameter in the laser power (Wrigte PW) of induced representation shown in chart among Fig. 8 and the impulse phase relation.

After this, utilize the characteristic relation of being obtained in above-mentioned characteristic relation of obtaining and the 1st recording layer 11 and the parameter that obtains, impulse phase correction parameter in pulse position skew and the impulse phase relation in other recording layers 12,13 of prediction expression, the i.e. offset of the pulse rise and fall shown in chart among Fig. 9 (characteristic relation (SE4) of the impulse phase correction parameter in Pulse (Topr, Tlast)) and the impulse phase relation.

Secondly, utilize above-mentioned characteristic relation and derive the optimum value (SE5) of laser power and pulse width.In addition, judge whether this optimum value after implementing adjustment under the writing speed of expection, can be applicable to the information record (SE6) that is carried out with certain quality.Moreover, this adjustment be in laser power that shines the laser on the recording layer and the pulse width any is adjusted at least, make the interim record condition of laser power and pulse width change pairing laser power adjustment, become the particular value that is fit to carry out the information record with certain quality with parameter (evaluation index) and pulse width adjustment parameter (evaluation index).This also can carry out OPC in adjusting.

When the result of determination of above-mentioned SE6 can where applicable, forward the processing of following SE9 to, when the result cannot where applicable, setting for to make the specific writing speed after writing speed reduces or set for makes record end (SE7), judge whether to end (SE8), when record is ended, forward the processing of following SE11 to for record, when setting, forward the processing of above-mentioned SE6 in that writing speed is reduced.Moreover writing speed is reduced can not where applicable, also can replace record and end, and begin to repeat from the processing of above-mentioned SE1 once more.

When the result of determination of above-mentioned SE6 be above-mentioned optimum value go for expecting writing speed the time, judged result and contents processing and parameter (evaluation index) are recorded in the laser disc 10 with the information of adjusting the result, and make it corresponding and record (SE9) in the storer 127 with the medium ID of laser disc 10.

After this, use the above-mentioned optimum value of obtaining that laser disc 10 is carried out information record (SE10).Secondly, make above-mentioned judged result and contents processing be shown in display part 131 (SE12), and finish information record the 2nd or the 3rd recording layer 12,13.

According to above-mentioned example, changing under the corresponding test record condition with 10 conditions, the 1st recording layer 11 is carried out the record and the regeneration of detecting information, and according to this test result, derivation is fit to record information to the illuminate condition on the 1st recording layer 11, in addition, at other recording layers 12, on 13, when being less than in the test record of the 1st recording layer 5 of employed conditional numbers with the test record conditional number, carry out the record and the regeneration of detecting information, and according to the test result and the 2nd or the 3rd recording layer 12 of the 1st recording layer 11,13 test result, derivation is fit to record information to the 2nd or the 3rd recording layer 12, illuminate condition on 13, and utilize this illuminate condition to record information to the 2nd or the 3rd recording layer 12,13, so can shorten in order to derive the 2nd or the 3rd recording layer 12, the test duration of 13 illuminate condition, therefore the test duration before can shortening information record, thereby recorded information at short notice.

In addition, in the test record of the 2nd or the 3rd recording layer 12,13, only make the test of laser power variation, and do not use more time and test zone to make the test of pulse width variation, therefore can further shorten the test duration.

As mentioned above, in common test record, obtain the characteristic relation of laser power in test, thus characteristic relation and derive best laser power to β in the laser power adjustment; Obtain the characteristic relation of pulse to phase deviation in the pulse width adjustment in testing, characteristic relation is obtained the i.e. strategy of best pulse width thus; And in this example,, only make the conditional number minimizing and carry out laser power adjustment test, and can derive strategy with optimal laser power and pulse width about the recording layer except that the 1st recording layer 11.

Moreover above-mentioned example is to exemplify to use well-known multilayer DVD to be illustrated as laser disc 10, and when using HD-DVD or well-known Blu-ray video disc as laser disc 10, also can utilize same processing and obtains above-mentioned effect.

Secondly, the 4th example of the present invention is described.

Apparatus structure in this example is identical with above-mentioned the 1st example, and be with the difference of the 1st example: in the 4th example, the different computer program of part in the recording processing that stores the recording layer 12,13 except that the 1st recording layer 11 among the employed CPU125 and the 3rd example.In the following description, the part that has a same structure with the 1st example uses same-sign to be illustrated.

That is, in the optical recorder 100 of this example, identical to the processing of the 3rd example shown in the process flow diagram among the information recording processing of the 1st recording layer 11 in the laser disc 10 and Figure 16.And, to the information recording processing of the recording layer except that the 1st recording layer 11 12,13 shown in the process flow diagram of Figure 18, by with previous identical OPC, only be less than conditional number in the 1st recording layer 11 with conditional number, carry out only being the test under pulse width adjustment usefulness a kind of test record condition of test record, and with the information regeneration (SF1) that is write down, detect under the laser irradiation condition parameter (evaluation index) (SF2).In addition, pulse width adjustment test record is to make the pulse width phasic Chang and carry out.Use in the test record of the 1st recording layer 11 5 conditions in employed 10 pulse width conditions to carry out test record herein.

Secondly, derive characteristic relation (SF3) by the above-mentioned parameter of obtaining.As this characteristic relation, for example, the offset of the pulse rise and fall of induced representation shown in chart among Fig. 9 (characteristic relation of the impulse phase correction parameter in Pulse (Topr, Tlast)) and the impulse phase relation.

After this, utilize the characteristic relation of being obtained in above-mentioned characteristic relation of obtaining and the 1st recording layer 11 and the parameter that obtains, the impulse phase correction parameter of laser power and impulse phase relation, the i.e. characteristic relation (SF4) of the phase correction parameter in laser power shown in chart among Fig. 8 (Wrigte PW) and the impulse phase relation in other recording layers 12,13 of prediction expression.

Secondly, utilize above-mentioned characteristic relation and derive the optimum value (SF5) of laser power and pulse width.In addition, judge whether this optimum value after implementing adjustment under the writing speed of expection, can be applicable to the information record (SF6) that is carried out with certain quality.Moreover, this adjustment be in laser power that shines the laser on the recording layer and the pulse width any is adjusted at least, make the interim record condition of laser power and pulse width change pairing laser power adjustment, become the particular value that is fit to carry out recorded information with certain quality with parameter (evaluation index) and pulse width adjustment parameter (evaluation index).This also can carry out OPC in adjusting.

When the result of determination of above-mentioned SF6 can where applicable, forward the processing of following SF9 to, when the result cannot where applicable, setting for to make the specific writing speed after writing speed reduces or set for makes record end (SF7), judge whether to end (SF8), when record is ended, forward the processing of following SF11 to for record, when setting, forward the processing of above-mentioned SF6 in that writing speed is reduced.Moreover writing speed is reduced can not where applicable, also can replace record and end, and begin to repeat from the processing of above-mentioned SF1 once more.

The result of determination of above-mentioned SF6 be above-mentioned optimum value go for expecting writing speed the time, judged result and contents processing and parameter (evaluation index) are recorded in the laser disc 10 with the information of adjusting the result, and make it corresponding and record (SF9) in the storer 127 with the medium ID of laser disc 10.In this way, keep, can thereafter in laser disc 10 enterprising line items of the same race the time, apply flexibly this information as record.Moreover, also can write down employed condition data in the test record corresponding to above-mentioned information.And, also above-mentioned information only can be recorded in any of laser disc 10 or storer 127.In addition, can only write down judged result or judge any information of corresponding contents processing therewith, and recording parameters (evaluation index) or utilize any information of the adjustment result that this parameter carries out only.

After this, use the above-mentioned optimum value of obtaining that laser disc 10 is carried out information record (SF10).Secondly, make above-mentioned judged result and contents processing be shown in display part 131 (SF12), and finish information record the 2nd or the 3rd recording layer 12,13.Moreover, also can be only with judged result or judge corresponding contents processing therewith any be shown in display part 131.

According to above-mentioned example, changing under the corresponding test record condition with 10 conditions, the 1st recording layer 11 is carried out the record and the regeneration of detecting information, and according to this test result, derivation is fit to record information to the illuminate condition on the 1st recording layer 11, in addition, at other recording layers 12, on 13, when being less than 5 of conditional numbers employed in the test record of the 1st recording layer with the test record conditional number, carry out the record and the regeneration of detecting information, and according to the test result and the 2nd or the 3rd recording layer 12 of the 1st recording layer 11,13 test result, derivation is fit to record information to the 2nd or the 3rd recording layer 12, illuminate condition on 13, and utilize this illuminate condition to record information to the 2nd or the 3rd recording layer 12,13, so can shorten in order to derive the 2nd or the 3rd recording layer 12, the test duration of 13 illuminate condition, therefore the test duration before can shortening information record, thereby recorded information at short notice.

In addition, in the test record of the 2nd or the 3rd recording layer 12,13, only make the test of pulse width variation, therefore can further shorten the test duration.

As mentioned above, in common test record, obtain the characteristic relation of laser power in test, thus characteristic relation and derive best laser power to β in the laser power adjustment; Obtain the characteristic relation of pulse to phase deviation in the pulse width adjustment in testing, characteristic relation is obtained the i.e. strategy of best pulse width thus; And in this example,, only carry out pulse width adjustment test about the recording layer except that the 1st recording layer 11, and the test record conditional number is reduced with after shortening the test duration, can derive strategy with optimal laser power and pulse width.

Moreover, above-mentioned example is to exemplify to use well-known multilayer DVD to be illustrated as laser disc 10, and with the 1st example similarly, when using HD-DVD or well-known Blu-ray video disc, also can utilize same processing and obtain above-mentioned effect as laser disc 10.

Secondly, the 5th example of the present invention is described.

Apparatus structure in this example is identical with above-mentioned the 1st example, and be: in the 5th example, store the mutually different computer program of recording processing of each recording layer 11,12,13 in the laser disc 10 among the employed CPU125 with the difference of the 1st example.In the following description, the part that has a same structure with the 1st example uses same-sign to be illustrated.

Figure 19 and Figure 20 are recording processing is carried out in explanation to the recording layer in the 5th example process flow diagrams.The computer program of carrying out this processing is stored in the memory circuit 126 of CPU125 in advance, and carries out above-mentioned processing by CPU125.And, in this example, the test processes when recording information to the 1st recording layer 11 of laser disc 10 is with before roughly the same, and the test processes when recording information to recording layer except that the 1st recording layer 11, different with the test processes in the 1st recording layer 11, the former can shorten the time.

That is, when recording information to the 1st recording layer 11, carry out the processing shown in the process flow diagram among Figure 19.During this handles, by with previous identical OPC, under following two kinds of test record conditions, test, promptly, laser power adjustment test record and pulse width adjustment test record, and with the information regeneration (SG1) that is write down, detect under the laser irradiation condition parameter (evaluation index) (SG2).At this moment, record is changed with specific times with regeneration.

In addition, as parameter, for example when DVD, enumerate β (asymmetry), laser radiation power, impulse phase etc.And the laser power adjustment makes laser power (Wrigte PW) phasic Chang and carries out with test record as shown in Figure 4, and the pulse width adjustment with test record similarly carries out the pulse width phasic Chang.Moreover, when carrying out the above-mentioned parameter detection, use under the situation of the data of the tactful form of in can using storer 127, being stored, and for the laser disc 10 of the unknown kind of the data that can't use the tactful form of being stored in the storer 127, then carry out well-known automatic strategy and detect and handle.

Secondly, derive characteristic relation (SG3) by the above-mentioned parameter of obtaining.As this characteristic relation, the for example offset of the characteristic relation of the phase correction parameter in the characteristic relation of the laser power (Wrigte PW) of induced representation shown in chart among Fig. 5 and β relation, the laser power (Wrigte PW) of expression shown in chart among Fig. 6 and the impulse phase relation and the pulse rise and fall of expression shown in chart among Fig. 7 (characteristic relation of the impulse phase correction parameter in Pulse (Topr, Tlast)) and the impulse phase relation.Herein, the detecting information that writes down by making the laser power phasic Chang, two kinds of parameters of induced representation (evaluation index), that is: the characteristic relation of the laser power shown in the chart (Wrigte PW) and β relation in the presentation graphs 5 is with the characteristic relation of phase correction parameter in the laser power (WrigtePW) of expression shown in chart among Fig. 6 and the impulse phase relation.

After this, use, derive the optimum value (SG4) of laser power and pulse width by the obtained parameter of the above-mentioned characteristic relation of having obtained.In addition, judge whether this optimum value after implementing adjustment under the writing speed of expection, can be applicable to the information record (SG5) that is carried out with certain quality.Moreover, this adjustment be in laser power that shines the laser on the recording layer and the pulse width any is adjusted at least, make the interim record condition of laser power and pulse width change pairing laser power adjustment, become the particular value that is fit to carry out the information record with certain quality with parameter (evaluation index) and pulse width adjustment parameter (evaluation index).This also can carry out OPC in adjusting.

When the result of determination of above-mentioned SG5 can where applicable, forward the processing of following SG8 to, when it cannot where applicable, setting for to make the specific writing speed after writing speed reduces or set for makes record end (SG6), judge whether to end (SG7), when record is ended, forward the processing of following SG10 to for record, when setting, forward the processing of above-mentioned SG5 in that writing speed is reduced.

When the result of determination of above-mentioned SG5 be above-mentioned optimum value go for expecting writing speed the time, judged result and contents processing and parameter (evaluation index) are recorded in the laser disc 10 with the information of adjusting the result, and make it corresponding and record (SG8) in the storer 127 with the medium ID of laser disc 10.In this way, keep, can thereafter in laser disc 10 enterprising line items of the same race the time, apply flexibly this information as record.Moreover, also can write down employed condition data in the test record corresponding to above-mentioned information.And, also above-mentioned information only can be recorded in any of laser disc 10 or storer 127.In addition, can only write down judged result or judge any information of corresponding contents processing therewith, and recording parameters (evaluation index) or utilize any information of the adjustment result that this parameter carries out only.

After this, use the above-mentioned optimum value of obtaining that laser disc 10 is carried out information record (SG9).Secondly, make above-mentioned judged result and contents processing be shown in display part 131 (SG10), and finish information record the 1st recording layer 11.Moreover, also can be only with judged result or judge corresponding contents processing therewith any be shown in display part 131.

In addition, when other recording layers 12,13 except that the 1st recording layer 11 being carried out the information record, carry out the processing shown in the process flow diagram among Figure 20.During this handles, by with previous identical OPC, only the conversion times with record and regeneration is less than conversion times in the 1st recording layer 11, carry out only being the test under laser power adjustment usefulness a kind of test record condition of test record, and with the information regeneration (SH1) that is write down, detect under the laser irradiation condition parameter (evaluation index) (SH2).In addition, the laser power adjustment is to make laser power (Wrigte PW) phasic Chang and carry out with test record as shown in Figure 4.

Secondly, derive characteristic relation (SH3) by the above-mentioned parameter of obtaining.As this characteristic relation, for example, the characteristic relation of the phase correction parameter in the laser power (Wrigte PW) of induced representation shown in chart among Fig. 8 and the impulse phase relation.

After this, utilize the characteristic relation of being obtained in above-mentioned characteristic relation of obtaining and the 1st recording layer 11 and the parameter that obtains, impulse phase correction parameter in pulse position skew and the impulse phase relation in other recording layers 12,13 of prediction expression, it is the offset (characteristic relation (SH4) of the impulse phase correction parameter in Pulse (Topr, Tlast)) and the impulse phase relation of the pulse rise and fall shown in the chart in the presentation graphs 9.

Secondly, utilize above-mentioned characteristic relation and derive the optimum value (SH5) of laser power and pulse width.In addition, judge whether this optimum value after implementing adjustment under the writing speed of expection, can be applicable to the recorded information (SH6) of being carried out with certain quality.Moreover, this adjustment be in laser power that shines the laser on the recording layer and the pulse width any is adjusted at least, make the interim record condition of laser power and pulse width change pairing laser power adjustment, become the particular value that is fit to carry out the information record with certain quality with parameter (evaluation index) and pulse width adjustment parameter (evaluation index).This also can carry out OPC in adjusting.

When the result of determination of above-mentioned SH6 can where applicable, forward the processing of following SH9 to, when the result cannot where applicable, setting for to make the specific writing speed after writing speed reduces or set for makes record end (SH7), judge whether to end (SH8), when record is ended, forward the processing of following SH11 to for record, when setting, forward the processing of above-mentioned SH6 in that writing speed is reduced.Moreover writing speed is reduced can not where applicable, also can replace record and end, and begin to repeat from the processing of above-mentioned SH1 once more.

When the result of determination of above-mentioned SH6 be above-mentioned optimum value go for expecting writing speed the time, judged result and contents processing and parameter (evaluation index) are recorded in the laser disc 10 with the information of adjusting the result, and make it corresponding and record (SH9) in the storer 127 with the medium ID of laser disc 10.

After this, use the above-mentioned optimum value of obtaining that laser disc 10 is carried out information record (SH10).Secondly, make above-mentioned judged result and contents processing be shown in display part 131 (SH12), and finish information record the 2nd or the 3rd recording layer 12,13.

According to above-mentioned example, the record that under multiple test record condition the 1st recording layer 11 is carried out detecting information is during with regeneration, with specific times this record is changed with regeneration, and according to this test result, derivation is fit to record information to the illuminate condition on the 1st recording layer 11, in addition, at other recording layers 12, the record that carries out detecting information on 13 is during with regeneration, be less than number of times in the 1st recording layer 11 with conversion times, this record is changed with regeneration, and according to the test result and the 2nd or the 3rd recording layer 12 of the 1st recording layer 11,13 test result, derivation is fit to record information to the illuminate condition on the 2nd or the 3rd recording layer, and utilize this illuminate condition to record information to the 2nd or the 3rd recording layer 12,13, so can shorten in order to derive the 2nd or the 3rd recording layer 12, the test duration of 13 illuminate condition, therefore the test duration before can shortening information record, thereby recorded information at short notice.

In addition, in the test record of the 2nd or the 3rd recording layer 12,13, only make the test of laser power variation, and do not use more time and test zone to make the test of pulse width variation, therefore can further shorten the test duration.

As mentioned above, in common test record, obtain the characteristic relation of laser power in test, thus characteristic relation and derive best laser power to β in the laser power adjustment; Obtain the characteristic relation of pulse to phase deviation in the pulse width adjustment in testing, characteristic relation is obtained the i.e. strategy of best pulse width thus; And in this example,, the conversion times of record and regeneration is reduced and carry out the laser power adjustment with test, and can derive and have the best laser power and the strategy of pulse width about the recording layer except that the 1st recording layer 11.

Moreover above-mentioned example is to exemplify to use well-known multilayer DVD to be illustrated as laser disc 10, and when using HD-DVD or well-known Blu-ray video disc as laser disc 10, also can utilize same processing and obtains above-mentioned effect.

Secondly, the 6th example of the present invention is described.

Apparatus structure in this example is identical with above-mentioned the 1st example, and be with the difference of the 1st example: in the 6th example, the different computer program of part in the recording processing that stores the recording layer 12,13 except that the 1st recording layer 11 among the employed CPU 125 and the 5th example.In the following description, use same-sign to be illustrated with the part of the 1st example same structure.

That is, in the optical recorder 100 in this example, identical to the processing of the 5th example shown in the process flow diagram among the information recording processing of the 1st recording layer 11 in the laser disc 10 and Figure 19.And, to the information recording processing of the recording layer except that the 1st recording layer 11 12,13 shown in the process flow diagram of Figure 21, by with previous identical OPC, only the conversion times with record and regeneration is less than conversion times in the 1st recording layer 11, carry out only being the test under pulse width adjustment usefulness a kind of test record condition of test record, and with the information regeneration (S1I1) that is write down, detect under the laser irradiation condition parameter (evaluation index) (SI2).In addition, pulse width adjustment test record is to make the pulse width phasic Chang and carry out.

Secondly, derive characteristic relation (SI3) by the above-mentioned parameter of obtaining.As this characteristic relation, for example, the offset of the pulse rise and fall of induced representation shown in chart among Fig. 9 (characteristic relation of the impulse phase correction parameter in Pulse (Topr, Tlast)) and the impulse phase relation.

After this, the parameter that utilization is obtained by the characteristic relation of being obtained in above-mentioned characteristic relation of obtaining and the 1st recording layer 11, the relation of pulse position skew and impulse phase correction parameter, the i.e. characteristic relation (SI4) of the phase correction parameter in laser power shown in the chart (Wrigte PW) and the impulse phase relation in the presentation graphs 8 in other recording layers 12,13 of prediction expression.

Secondly, utilize above-mentioned characteristic relation and derive the optimum value (SI5) of laser power and pulse width.Judge in addition whether this optimum value after implementing adjustment under the writing speed of expection, can be applicable to the recorded information (SI6) of being carried out with certain quality.Moreover, this adjustment be in laser power that shines the laser on the recording layer and the pulse width any is adjusted at least, make the interim record condition of laser power and pulse width change pairing laser power adjustment, become the particular value that is fit to the certain quality recorded information with parameter (evaluation index) and pulse width adjustment parameter (evaluation index).This also can carry out OPC in adjusting.

When the result of determination of above-mentioned SI6 can where applicable, forward the processing of following SI9 to, when the result cannot where applicable, setting for to make the specific writing speed after writing speed reduces or set for makes record end (SI7), judge whether to end (SI8), when going up in the record, forward the processing of following SI11 to for record, when setting, forward the processing of above-mentioned SI6 in that writing speed is reduced.Moreover writing speed is reduced can not where applicable, also can replace record and end, and begin to repeat from the processing of above-mentioned SI1 once more.

The result of determination of above-mentioned SI6 be above-mentioned optimum value go for expecting writing speed the time, judged result and contents processing and parameter (evaluation index) are recorded in the laser disc 10 with the information of adjusting the result, and make it corresponding and record (SI9) in the storer 127 with the medium ID of laser disc 10.In this way, keep, can thereafter in laser disc 10 enterprising line items of the same race the time, apply flexibly this information as record.Moreover, also can write down employed condition data in the test record corresponding to above-mentioned information.And, also above-mentioned information only can be recorded in any of laser disc 10 or storer 127.In addition, can only write down judged result or judge any information of corresponding contents processing therewith, and recording parameters (evaluation index) or utilize any information of the adjustment result of this parameter only.

After this, use the above-mentioned optimum value of obtaining that laser disc 10 is carried out information record (SI10).Secondly, make above-mentioned judged result and contents processing be shown in display part 131 (SI12), and finish information record the 2nd or the 3rd recording layer 12,13.Moreover, also can be only with judged result or judge corresponding contents processing therewith any be shown in display part 131.

According to above-mentioned example, the record that under multiple test record condition the 1st recording layer 11 is carried out detecting information is during with regeneration, with specific times this record is changed with regeneration, and according to this test result, derivation is fit to record information to the illuminate condition on the 1st recording layer 11, in addition, at other recording layers 12, the record that carries out detecting information on 13 is during with regeneration, be less than number of times in the 1st recording layer 11 with conversion times, this record is changed with regeneration, and according to the test result and the 2nd or the 3rd recording layer 12 of the 1st recording layer 11,13 test result, derivation is fit to record information to the illuminate condition on the 2nd or the 3rd recording layer, and utilize this illuminate condition to record information to the 2nd or the 3rd recording layer 12,13, so can shorten in order to derive the 2nd and the 3rd recording layer 12, the test duration of 13 illuminate condition, therefore the test duration before can shortening information record, thereby recorded information at short notice.

In addition, in the test record of the 2nd or the 3rd recording layer 12,13, only make the test of pulse width variation, therefore can further shorten the test duration.

As mentioned above, in common test record, obtain the characteristic relation of laser power in test, thus characteristic relation and derive best laser power to β in the laser power adjustment; Obtain the characteristic relation of pulse to phase deviation in the pulse width adjustment in testing, characteristic relation is obtained the i.e. strategy of best pulse width thus; And in this example,, only carry out pulse width adjustment test about the recording layer except that the 1st recording layer 11, and the test record conditional number is reduced with after shortening the test duration, can derive strategy with optimal laser power and pulse width.

Moreover, above-mentioned example is to exemplify to use well-known multilayer DVD to be illustrated as laser disc 10, and with the 1st example similarly, when using HD-DVD or well-known Blu-ray video disc, also can utilize same processing and obtain above-mentioned effect as laser disc 10.

Secondly, the 7th example of the present invention is described.

Apparatus structure in this example is identical with above-mentioned the 1st example, and be: in the 7th example, store the mutually different computer program of recording processing of each recording layer 11,12,13 in the laser disc 10 among the employed CPU125 with the difference of the 1st example.In the following description, the part that has a same structure with the 1st example uses same-sign to be illustrated.

Figure 22 and Figure 23 are recording processing is carried out in explanation to the recording layer in the 7th example process flow diagrams.The computer program of carrying out this processing is stored in the memory circuit 126 of CPU125 in advance, and carries out above-mentioned processing by CPU125.And, in this example, the test processes when recording information to the 1st recording layer 11 of laser disc 10 is with before roughly the same, and the test processes when recording information to recording layer except that the 1st recording layer 11, different with the test processes in the 1st recording layer 11, the former can shorten the time.

That is, when recording information to the 1st recording layer 11, carry out the processing shown in the process flow diagram among Figure 22.During this handles, by with previous identical OPC, under following two kinds of test record conditions, test, promptly, laser power adjustment test record and pulse width adjustment test record, and with the information regeneration (SJ1) that is write down, detect under the laser irradiation condition parameter (evaluation index) (SJ2).At this moment, will write down with regeneration as 1 group, and carry out this setting with specific times.

In addition, as parameter, for example when DVD, enumerate β (asymmetry), laser radiation power, impulse phase etc.And the laser power adjustment makes laser power (Wrigte PW) phasic Chang and carries out with test record as shown in Figure 4, and the pulse width adjustment with test record similarly makes the pulse width phasic Chang and carries out.Moreover, when carrying out the above-mentioned parameter detection, use under the situation of the data of the tactful form of in can using storer 127, being stored, and for the laser disc 10 of the unknown kind of the data that can't use the tactful form that is stored in the storer 127, then carry out well-known automatic strategy and detect and handle.

Secondly, derive characteristic relation (SJ3) by the above-mentioned parameter of obtaining.As this characteristic relation, for example the characteristic relation of the laser power (Wrigte PW) of induced representation shown in chart among Fig. 5 and β relation, the laser power (Wrigte PW) of expression shown in chart among Fig. 6 and impulse phase are the characteristic relation of the phase correction parameter in the offset relation of pulse rise and fall and the offset of the pulse rise and fall of expression shown in chart among Fig. 7 (characteristic relation of the impulse phase correction parameter in Pulse (Topr, Tlast)) and the impulse phase relation.Herein, the detecting information that writes down by making the laser power phasic Chang, two kinds of parameters of induced representation (evaluation index), that is: the characteristic relation of the laser power shown in the chart (Wrigte PW) and β relation in the presentation graphs 5 is with the characteristic relation of phase correction parameter in the laser power shown in the chart in the presentation graphs 6 (Wrigte PW) and the impulse phase relation.

After this, use, derive the optimum value (SJ4) of laser power and pulse width by the obtained parameter of the above-mentioned characteristic relation of having obtained.In addition, judge whether this optimum value after implementing adjustment under the writing speed of expection, can be applicable to the information record (SJ5) that is carried out with certain quality.Moreover, this adjustment be in laser power that shines the laser on the recording layer and the pulse width any is adjusted at least, make the interim record condition of laser power and pulse width change pairing laser power adjustment, become the particular value that is fit to carry out the information record with certain quality with parameter (evaluation index) and pulse width adjustment parameter (evaluation index).This also can carry out OPC in adjusting.

When the result of determination of above-mentioned SJ5 can where applicable, forward the processing of following SJ8 to, when it cannot where applicable, setting for to make the specific writing speed after writing speed reduces or set for makes record end (SJ6), judge whether to ask termination (SJ7), when record is ended, forward the processing of following SJ10 to for note, when setting, forward the processing of above-mentioned SJ5 in that writing speed is reduced.

When the result of determination of above-mentioned SJ5 be above-mentioned optimum value go for expecting writing speed the time, judged result and contents processing and parameter (evaluation index) are recorded in the laser disc 10 with the information of adjusting the result, and make it corresponding and record (SJ8) in the storer 127 with the medium ID of laser disc 10.In this way, keep, can thereafter in laser disc 10 enterprising line items of the same race the time, apply flexibly this information as record.Moreover, also can write down employed condition data in the test record corresponding to above-mentioned information.And, also above-mentioned information only can be recorded in any of laser disc 10 or storer 127.In addition, can only write down judged result or judge any information of corresponding contents processing therewith, and recording parameters (evaluation index) or utilize any information of the adjustment result that this parameter carries out only.

After this, use the above-mentioned optimum value of obtaining that laser disc 10 is carried out information record (SJ9).Secondly, make above-mentioned judged result and contents processing be shown in display part 131 (SJ10), and finish information record the 1st recording layer 11.Moreover, also can be only with judged result or judge corresponding contents processing therewith any be shown in display part 131.

In addition, when other recording layers 12,13 except that the 1st recording layer 11 being carried out the information record, carry out the processing shown in the process flow diagram among Figure 23.During this handles, by with previous identical OPC, only the number of times number of times that is provided with record and regeneration is less than the number of times that is provided with in the 1st recording layer 11, carry out only being the test under laser power adjustment usefulness a kind of test record condition of test record, and with the information regeneration (SK1) that is write down, detect under the laser irradiation condition parameter (evaluation index) (SK2).In addition, the laser power adjustment is to make laser power (WrigtePW) phasic Chang and carry out with test record as shown in Figure 4.

Secondly, derive characteristic relation (SK3) by the above-mentioned parameter of obtaining.As this characteristic relation, for example, the characteristic relation of the phase correction parameter in the laser power (Wrigte PW) of induced representation shown in chart among Fig. 8 and the impulse phase relation.

After this, utilize the characteristic relation of being obtained in above-mentioned characteristic relation of obtaining and the 1st recording layer 11 and the parameter that obtains, impulse phase correction parameter in pulse position skew and the impulse phase relation in other recording layers 12,13 of prediction expression, it is the offset (characteristic relation (SK4) of the impulse phase correction parameter in Pulse (Topr, Tlast)) and the impulse phase relation of the pulse rise and fall shown in the chart in the presentation graphs 9.

Secondly, utilize above-mentioned characteristic relation and derive the optimum value (SK5) of laser power and pulse width.In addition, judge whether this optimum value after implementing adjustment under the writing speed of expection, can be applicable to the information record (SK6) that is carried out with certain quality.Moreover, this adjustment be in laser power that shines the laser on the recording layer and the pulse width any is adjusted at least, make the interim record condition of laser power and pulse width change pairing laser power adjustment, become the particular value that is fit to carry out the information record with certain quality with parameter (evaluation index) and pulse width adjustment parameter (evaluation index).This also can carry out OPC in adjusting.

When the result of determination of above-mentioned SK6 can where applicable, forward the processing of following SK9 to, when the result cannot where applicable, setting for to make the specific writing speed after writing speed reduces or set for makes record end (SK7), judge whether to end (SK8), when record is ended, forward the processing of following SK11 to for record, when setting, forward the processing of above-mentioned SK6 in that writing speed is reduced.Moreover writing speed is reduced can not where applicable, also can replace record and end, and begin to repeat from the processing of above-mentioned SK1 once more.

When the result of determination of above-mentioned SK6 be above-mentioned optimum value go for expecting writing speed the time, judged result and contents processing and parameter (evaluation index) are recorded in the laser disc 10 with the information of adjusting the result, and make it corresponding and record (SK9) in the storer 127 with the medium ID of laser disc 10.

After this, use the above-mentioned optimum value of obtaining that laser disc 10 is carried out information record (SK10).Secondly, make above-mentioned judged result and contents processing be shown in display part 131 (SK12), and finish information record the 2nd or the 3rd recording layer 12,13.

According to above-mentioned example, the 1st recording layer is provided with the record and the regeneration of changing the detecting information that is constituted by the stage of record condition more than 11 time, and according to this test result, derivation is fit to record information to the illuminate condition on the 1st recording layer 11, in addition, the number of times that is provided with that detecting information in the test that number of times is less than the 1st recording layer 11 is set with record and regeneration, at other recording layers 12 except that the 1st recording layer 11, carry out the record and the regeneration of detecting information on 13, and according to the test result and the 2nd or the 3rd recording layer 12 of the 1st recording layer 11,13 test result, derivation is fit to record information to the 2nd or the 3rd recording layer 12, illuminate condition on 13, and utilize this illuminate condition to record information to the 2nd or the 3rd recording layer 12,13, so can shorten in order to derive the 2nd and the 3rd recording layer 12, the test duration of 13 illuminate condition, therefore the test duration before can shortening information record, thereby recorded information at short notice.

In addition, in the test record of the 2nd or the 3rd recording layer 12,13, only make the test of laser power variation, and do not use more time and test zone to make the test of pulse width variation, therefore can further shorten the test duration.

As mentioned above, in common test record, obtain the characteristic relation of laser power in test, thus characteristic relation and derive best laser power to β in the laser power adjustment; Obtain the characteristic relation of pulse to phase deviation in the pulse width adjustment in testing, characteristic relation is obtained the i.e. strategy of best pulse width thus; And in this example, about the recording layer except that the 1st recording layer 11, will write down with regeneration as 1 group, this group number reduced and carry out the laser power adjustment with test, can derive strategy with optimal laser power and pulse width.

Moreover above-mentioned example is to exemplify to use well-known multilayer DVD to be illustrated as laser disc 10, and when using HD-DVD or well-known Blu-ray video disc as laser disc 10, also can utilize same processing and obtains above-mentioned effect.

Secondly, the 8th example of the present invention is described.

Apparatus structure in this example is identical with above-mentioned the 1st example, and be with the difference of the 1st example: in the 8th example, the different computer program of part in the recording processing that stores the recording layer 12,13 except that the 1st recording layer 11 among the employed CPU125 and the 7th example.In the following description, use same-sign to be illustrated with the part of the 1st example same structure.

That is, in the optical recorder 100 in this example, identical to the processing of the 7th example shown in the process flow diagram among the information recording processing of the 1st recording layer 11 in the laser disc 10 and Figure 22.And, to the information recording processing of the recording layer except that the 1st recording layer 11 12,13 shown in the process flow diagram of Figure 24, by with previous identical OPC, only the number of times that is provided with record and regeneration is less than the number of times that is provided with in the 1st recording layer 11, carry out only being the test under pulse width adjustment usefulness a kind of test record condition of test record, and with the information regeneration (SL1) that is write down, detect under the laser irradiation condition parameter (evaluation index) (SL2).In addition, pulse width adjustment test record is to make the pulse width phasic Chang and carry out.

Secondly, derive characteristic relation (SL3) by the above-mentioned parameter of obtaining.As this characteristic relation, for example, the offset of the pulse rise and fall of induced representation shown in chart among Fig. 9 (characteristic relation of the impulse phase correction parameter in Pulse (Topr, Tlast)) and the impulse phase relation.

After this, the parameter that utilization is obtained by the characteristic relation of being obtained in above-mentioned characteristic relation of obtaining and the 1st recording layer 11, impulse phase correction parameter in other recording layers 12,13 of prediction expression in laser power and the impulse phase relation, the i.e. characteristic relation (SL4) of the phase correction parameter in laser power shown in the chart (Wrigte PW) and the impulse phase relation in the presentation graphs 8.

Secondly, utilize above-mentioned characteristic relation and derive the optimum value (SL5) of laser power and pulse width.In addition, judge whether this optimum value after implementing adjustment under the writing speed of expection, can be applicable to the recorded information (SL6) of being carried out with certain quality.Moreover, this adjustment be in the laser power of the laser that shines recording layer and the pulse width any is adjusted at least, make the interim record condition of laser power and pulse width change pairing laser power adjustment, become the particular value that is fit to the certain quality recorded information with parameter (evaluation index) and pulse width adjustment parameter (evaluation index).This also can carry out OPC in adjusting.

When the result of determination of above-mentioned SL6 can where applicable, forward the processing of following SL9 to, when the result cannot where applicable, setting for to make the specific writing speed after writing speed reduces or set for makes record end (SL7), judge whether to end (SL8), when record is ended, forward the processing of following SL11 to for record, when setting, forward the processing of above-mentioned SL6 to when writing speed is reduced.Moreover writing speed is reduced can not where applicable, also can replace record and end, and begin to repeat from the processing of above-mentioned SL1 once more.

The result of determination of above-mentioned SL6 be above-mentioned optimum value go for expecting writing speed the time, judged result and contents processing and parameter (evaluation index) are recorded in the laser disc 10 with the information of adjusting the result, and make it corresponding and record (SL9) in the storer 127 with the medium ID of laser disc 10.In this way, keep, can thereafter in laser disc 10 enterprising line items of the same race the time, apply flexibly this information as record.Moreover, also can write down employed condition data in the test record corresponding to above-mentioned information.And, also above-mentioned information only can be recorded in any of laser disc 10 or storer 127.In addition, can only write down judged result or judge any information of corresponding contents processing therewith, and recording parameters (evaluation index) or use any information of the adjustment result of this parameter only.

After this, use the above-mentioned optimum value of obtaining that laser disc 10 is carried out information record (SL10).Secondly, make above-mentioned judged result and contents processing be shown in display part 131 (SL12), and finish information record the 2nd or the 3rd recording layer 12,13.Moreover, also can be only with judged result or judge corresponding contents processing therewith any be shown in display part 131.

According to above-mentioned example, the 1st recording layer is provided with the record and the regeneration of changing the detecting information that is constituted by the stage of record condition more than 11 time, and according to this test result, derivation is fit to record information to the illuminate condition on the 1st recording layer 11, in addition, the number of times that is provided with that is less than detecting information in the test of the 1st recording layer 11 with the number of times of setting of record and regeneration, at other recording layers 12 except that the 1st recording layer 11, carry out the record and the regeneration of detecting information on 13, and according to the test result and the 2nd or the 3rd recording layer 12 of the 1st recording layer 11,13 test result, derivation is fit to record information to the 2nd or the 3rd recording layer 12, illuminate condition on 13, and utilize this illuminate condition to record information to the 2nd or the 3rd recording layer 12,13, so can shorten in order to derive the 2nd and the 3rd recording layer 12, the test duration of 13 illuminate condition, therefore the test duration before can shortening information record, thereby recorded information at short notice.

In addition, in the test record of the 2nd or the 3rd recording layer 12,13, only make the test of pulse width variation, therefore can further shorten the test duration.

As mentioned above, in common test record, obtain the characteristic relation of laser power in test, thus characteristic relation and derive best laser power to β in the laser power adjustment; Obtain the characteristic relation of pulse to phase deviation in the pulse width adjustment in testing, characteristic relation is obtained the i.e. strategy of best pulse width thus; And in this example,, only carry out pulse width adjustment test about the recording layer except that the 1st recording layer 11, and the test record conditional number is reduced with after shortening the test duration, can derive strategy with optimal laser power and pulse width.

Moreover, above-mentioned example is to exemplify to use well-known multilayer DVD to be illustrated as laser disc 10, and with the 1st example similarly, when using HD-DVD or well-known Blu-ray video disc, also can utilize same processing and obtain above-mentioned effect as laser disc 10.

In addition, above-mentioned example only is a specific example of the present invention, and the present invention is not limited to the structure of above-mentioned example.For example, above-mentioned each example is to adjust processing later on obtaining optimum value, and there is no need to adjust when handling, and also can save this and adjust and handle.And, as required, the processing that also can preferably carry out the reduction writing speed or end to write down, judgment processing result's etc. display process and this recording of information processing etc.

In addition, above-mentioned each example is to be benchmark with the 1st recording layer 11, obtain the optimum value that other recording layers 12,13 are carried out laser radiation at short notice, can be benchmark also, obtain the optimum value of other recording layers being carried out laser radiation at short notice with the recording layer except that the 1st recording layer.In addition, above-mentioned each example is i.e. the 1st recording layer 11 from the position of leaving coplanar laser illumination, until near i.e. the 3rd recording layer 13 in the position of shadow surface, carries out the information record successively, but be not limited thereto, also can begin to carry out the information record from the recording layer except that the 1st recording layer 11.

In addition, other examples are described.

Figure 27 makes explanation carry out the process flow diagram of recording processing to the recording layer in the 1st example.The computer program of carrying out this processing is stored in the memory circuit 126 of CPU125 in advance, and carries out above-mentioned processing by CPU125.In addition, in this example, the test processes with data recording during to the 1st recording layer 11 of laser disc 10 is with before roughly the same, and with data recording the test processes during to the recording layer except that the 1st recording layer 11, different with the test processes in the 1st recording layer 11, the former can shorten the time.

That is, during with data recording to the 1 recording layer 11, carry out processing shown in Figure 27.When handling beginning, judge on the 1st recording layer 11 of laser disc 10, whether to write down (SA1).When recording information to the recording layer except that the 1st recording layer 11, forward the processing of following SA9 to; During with data recording to the 1 recording layer 11, by with previous identical recording laser intensity optimization (the OPC:Optimum PowerControl that makes, hereinafter referred to as OPC), utilize to adjust and use data pattern, carry out test record is used in the laser power adjustment with test record and pulse width adjustment test with specific times, and with the information regeneration (SA2) that is write down, detect under the laser irradiation condition parameter (eigenwert) (SA3).As this parameter, for example enumerate β (asymmetry), laser radiation power, impulse phase etc. during DVD.And the laser power adjustment makes laser power (Wrigte PW) phasic Chang and carries out with test record as shown in figure 28, and the pulse width adjustment with test record similarly makes the pulse width phasic Chang and carries out.Moreover, when carrying out the above-mentioned parameter detection, use under the situation of the data of the tactful form of in can using storer 127, being stored, and for the laser disc 10 of the unknown kind of the data that can't use the tactful form of being stored in the storer 127, then carry out well-known automatic strategy and detect and handle.

Secondly, derive characteristic relation (SA4) by the above-mentioned parameter of obtaining.As this characteristic relation, the for example offset of the characteristic relation of the phase correction parameter in the characteristic relation of the laser power (Wrigte PW) of induced representation shown in chart among Figure 29 and β relation, the laser power (Wrigte PW) of expression shown in chart among Figure 30 and the impulse phase relation and the pulse rise and fall of expression shown in chart among Figure 31 (characteristic relation of the impulse phase correction parameter in Pulse (Topr, Tlast)) and the impulse phase relation.Herein, the test data that writes down by making the laser power phasic Chang, two kinds of parameters of induced representation, promptly; The laser power (WrigtePW) shown in the chart and the characteristic relation of β relation among expression Figure 29 are with the characteristic relation of laser power (Wrigte PW) shown in the chart and the phase correction parameter in the impulse phase relation among expression Figure 30.

After this, use, derive the best titime impulsive condition (SA5) of laser power and pulse width, and utilize this best titime impulsive condition, the 1st recording layer 11 is carried out actual information record (SA6) by the obtained parameter of the above-mentioned characteristic relation of having obtained.

Secondly, judge in data recording process, whether be necessary change record layer (SA7), when must the change record layer, forward the processing of above-mentioned SA1 to; In the time need not changing, judge whether the information record finishes (SA8).When this result of determination is an information record when not finishing as yet, forward the processing of above-mentioned SA6 to; When result of determination is an information record when having finished, end process.

On the other hand, when the result of determination of above-mentioned SA1 is when carrying out the information record on the recording layer except that the 1st recording layer 11, at first, by with previous identical OPC, and the adjustment of using is employed identical during with the test of data pattern and the 1st recording layer 11, only is less than number of times in the 1st recording layer 11 with number of times, carries out the test of only laser power adjustment usefulness test record, and with the information regeneration (SA9) that is write down, detect under the laser irradiation condition parameter (eigenwert) (SA10).In addition, the laser power adjustment makes laser power (Wrigte PW) phasic Chang and carries out with test record as shown in figure 28.

Secondly, go out the above-mentioned parameter of obtaining and derive characteristic relation (SA11).As this characteristic relation, the characteristic relation of the phase correction parameter in the laser power (Wrigte PW) of induced representation shown in chart among Figure 32 and the impulse phase relation for example.When in this way the 2nd recording layer 12 being write down, only derive the characteristic relation different with the 1st recording layer 11, therefore also can the shortening of realization time.

After this, the parameter that use is obtained by the characteristic relation of being obtained in above-mentioned characteristic relation of obtaining and the 1st recording layer 11, impulse phase correction parameter in pulse position skew and the impulse phase relation of other recording layers 12 of prediction expression, offset (the characteristic relation (SA12) of the impulse phase correction parameter in the relation of Pulse (Topr, Tlast)) and impulse phase of promptly representing the pulse rise and fall shown in the chart among Figure 33.

Secondly, use above-mentioned characteristic relation and the best titime impulsive condition (SA13) of deriving laser power and pulse width.After this, utilize the above-mentioned best titime impulsive condition of obtaining, laser disc 10 is carried out information record (SA6).

Secondly, judge in data recording process, whether be necessary change record layer (SA7), when must the change record layer, forward the processing of above-mentioned SA1 to; In the time need not changing, judge whether the information record finishes (SA8).When this result of determination is an information record when not finishing as yet, forward the processing of above-mentioned SA6 to; When result of determination is an information record when having finished, end process.

According to above-mentioned example, before the information record of reality, on the 1st recording layer 11, carry out test record, and in the specific test duration, derive the recording impulse condition that is fit to the 1st recording layer 11, and in the 2nd recording layer 12, only make the test of laser power variation, and do not use more time and test zone to make the test of pulse width variation, in the test duration was less than time in the 1st recording layer 11, therefore the derived record impulsive condition can shorten the test duration in order to the recording impulse condition that derives the 2nd recording layer 12, so can shortening information test duration before the record, thereby recorded information at short notice.

Claims (41)

1. optic recording method is characterized in that:

By optical recorder when the recording medium that comprises multilayer with a recording layer and other recording layers is carried out laser radiation and recorded information, carry out the record and the regeneration of detecting information at the test zone of each recording layer, derive the illuminate condition of laser, and utilize this illuminate condition that above-mentioned recording medium is carried out laser radiation, recorded information thus, and

Above-mentioned optical recorder is carried out following steps:

Reference recording layer testing procedure on an above-mentioned recording layer, carries out changing with the kind of record condition the record and the regeneration of corresponding detecting information;

Reference recording layer illuminate condition derived step, and according to the obtained test result of said reference recording layer testing procedure, derivation is fit to record information to an illuminate condition on the recording layer;

Other recording layer testing procedures are less than change number of times in the said reference recording layer testing procedure with the kind of test record condition change number of times, carry out the record and the regeneration of detecting information on above-mentioned other recording layers; And other recording layer illuminate conditions are derived step, test result and above-mentioned other the recording layer testing procedures obtained test result obtained according to said reference recording layer testing procedure derive the illuminate condition that is fit to record information on above-mentioned other recording layers.

2. optic recording method is characterized in that:

By optical recorder when the recording medium that comprises multilayer with a recording layer and other recording layers is carried out laser radiation and recorded information, carry out the record and the regeneration of detecting information at the test zone of each recording layer, derive the illuminate condition of laser, and utilize this illuminate condition that above-mentioned recording medium is carried out laser radiation, recorded information thus, and

Above-mentioned optical recorder is carried out following steps:

Reference recording layer testing procedure on an above-mentioned recording layer, carries out changing with the kind of record condition the record and the regeneration of corresponding detecting information;

Reference recording layer illuminate condition derived step, and according to the obtained test result of said reference recording layer testing procedure, derivation is fit to record information to an illuminate condition on the recording layer;

Other recording layer testing procedures under any test record condition in the test record condition of said reference recording layer testing procedure, carry out the record and the regeneration of detecting information on above-mentioned other recording layers; And

Other recording layer illuminate conditions are derived step, test result and above-mentioned other the recording layer testing procedures obtained test result obtained according to said reference recording layer testing procedure derive the illuminate condition that is fit to record information on above-mentioned other recording layers.

3. optic recording method is characterized in that:

By optical recorder when the recording medium that comprises multilayer with a recording layer and other recording layers is carried out laser radiation and recorded information, carry out the record and the regeneration of detecting information at the test zone of each recording layer, derive the illuminate condition of laser, and utilize this illuminate condition that above-mentioned recording medium is carried out laser radiation, recorded information thus, and

Above-mentioned optical recorder is carried out following steps:

Reference recording layer testing procedure changing under the corresponding test record condition with condition repeatedly, carries out the record and the regeneration of detecting information on an above-mentioned recording layer;

Reference recording layer illuminate condition derived step, and according to the obtained test result of said reference recording layer testing procedure, derivation is fit to record information to an illuminate condition on the recording layer;

Other recording layer testing procedures are less than employed conditional number in the said reference recording layer testing procedure with the test record conditional number, carry out the record and the regeneration of detecting information on above-mentioned other recording layers; And

Other recording layer illuminate conditions are derived step, test result and above-mentioned other the recording layer testing procedures obtained test result obtained according to said reference recording layer testing procedure derive the illuminate condition that is fit to record information on above-mentioned other recording layers.

4. optic recording method is characterized in that:

By optical recorder when the recording medium that comprises multilayer with a recording layer and other recording layers is carried out laser radiation and recorded information, carry out the record and the regeneration of detecting information at the test zone of each recording layer, derive the illuminate condition of laser, and utilize this illuminate condition that above-mentioned recording medium is carried out laser radiation, recorded information thus, and

Above-mentioned optical recorder is carried out following steps:

Reference recording layer testing procedure under multiple test record condition, carries out the record and the regeneration of detecting information on an above-mentioned recording layer;

Reference recording layer illuminate condition derived step, and according to the obtained test result of said reference recording layer testing procedure, derivation is fit to record information to an illuminate condition on the recording layer;

Other recording layer testing procedures carry out the record and the regeneration of detecting information on above-mentioned other recording layers; And

Other recording layer illuminate conditions are derived step, test result and above-mentioned other the recording layer testing procedures obtained test result obtained according to said reference recording layer testing procedure, derivation is fit to record information to the illuminate condition on above-mentioned other recording layers, and

Said reference recording layer testing procedure comprises:

The 1st detecting information recording step writes down detecting information on an above-mentioned recording layer, and

The 1st detecting information regeneration step, the detecting information that regeneration is write down by above-mentioned the 1st detecting information recording step;

Above-mentioned other recording layer testing procedures comprise:

The 2nd detecting information recording step writes down detecting information on above-mentioned other recording layers, and

The 2nd detecting information regeneration step, the detecting information that regeneration is write down by above-mentioned the 2nd detecting information recording step; And

The conversion times of above-mentioned the 2nd detecting information recording step and above-mentioned the 2nd detecting information regeneration step is set at the conversion times that is less than above-mentioned the 1st detecting information recording step and above-mentioned the 1st detecting information regeneration step.

5. optic recording method is characterized in that:

By optical recorder when the recording medium that comprises multilayer with a recording layer and other recording layers is carried out laser radiation and recorded information, carry out the record and the regeneration of detecting information at the test zone of each recording layer, derive the illuminate condition of laser, and utilize this illuminate condition that above-mentioned recording medium is carried out laser radiation, recorded information thus, and

Above-mentioned optical recorder is carried out following steps:

Reference recording layer testing procedure on an above-mentioned recording layer, repeatedly is provided with the record and the regeneration of changing the detecting information that is constituted by the stage of record condition;

Reference recording layer illuminate condition derived step, and according to the obtained test result of said reference recording layer testing procedure, derivation is fit to record information to an illuminate condition on the recording layer;

Other recording layer testing procedures are less than number of times in the said reference recording layer testing procedure with the number of times that is provided with of the record of detecting information and regeneration, carry out the record and the regeneration of detecting information on above-mentioned other recording layers; And

Other recording layer illuminate conditions are derived step, test result and above-mentioned other the recording layer testing procedures obtained test result obtained according to said reference recording layer testing procedure derive the illuminate condition that is fit to record information on above-mentioned other recording layers.

6. according to each described optic recording method in the claim 1 to 5, it is characterized in that:

In the said reference recording layer testing procedure, on an above-mentioned recording layer, carry out the record and the regeneration of following two detecting informations, that is, make the record and the regeneration of detecting information of record condition phasic Chang of laser power and the record and the regeneration of detecting information that makes the record condition phasic Chang of pulse width;

In above-mentioned other recording layer testing procedures, on above-mentioned other recording layers, make laser power the record condition phasic Chang detecting information record and regeneration or make the record of detecting information of record condition phasic Chang of pulse width and any of regeneration.

7. according to each described optic recording method in the claim 1 to 5, it is characterized in that:

In the said reference recording layer testing procedure, on an above-mentioned recording layer, carry out the record and the regeneration of following two detecting informations, that is, make the record and the regeneration of detecting information of record condition phasic Chang of laser power and the record and the regeneration of detecting information that makes the record condition phasic Chang of pulse width;

In above-mentioned other recording layer testing procedures, on above-mentioned other recording layers, make the record and the regeneration of detecting information of the record condition phasic Chang of laser power;

Above-mentioned other recording layer illuminate conditions are derived in the step; According to the corresponding laser power adjustment of the variation of the interim record condition of laser power obtained in the said reference recording layer testing procedure and pulse width with evaluation index and the variation corresponding laser power adjustment evaluation index of pulse width adjustment with laser power stage record condition obtained in evaluation index and above-mentioned other recording layer testing procedures; Derive the corresponding pulse width adjustment of the variation evaluation index of the interim record condition of pulse width in above-mentioned other recording layers

In addition, above-mentioned optical recorder is carried out set-up procedure, to in the laser power of carrying out laser radiation on above-mentioned other recording layers and the pulse width any is adjusted at least, making the interim record condition of laser power in above-mentioned other recording layers and pulse width change pairing laser power adjustment becomes the particular value that is fit to the information record with evaluation index and pulse width adjustment with evaluation index.

8. according to each described optic recording method in the claim 1 to 5, it is characterized in that:

In the said reference recording layer testing procedure, on an above-mentioned recording layer, carry out the record and the regeneration of following two detecting informations, that is, make the record and the regeneration of detecting information of record condition phasic Chang of laser power and the record and the regeneration of detecting information that makes the record condition phasic Chang of pulse width;

In above-mentioned other recording layer testing procedures, on above-mentioned other recording layers, make the record and the regeneration of detecting information of the record condition phasic Chang of pulse width,

Above-mentioned other recording layer illuminate conditions are derived in the step; According to the variation corresponding pulse width adjustment evaluation index of the corresponding laser power adjustment of the variation of the interim record condition of laser power obtained in the said reference recording layer testing procedure and pulse width with the interim record condition of pulse width obtained in evaluation index and pulse width adjustment usefulness evaluation index and above-mentioned other recording layer testing procedures; Derive the corresponding laser power adjustment of the variation evaluation index of the interim record condition of laser power

In addition, above-mentioned optical recorder is carried out set-up procedure, to in the laser power of carrying out laser radiation on above-mentioned other recording layers and the pulse width any is adjusted at least, making the interim record condition of laser power in above-mentioned other recording layers and pulse width change pairing laser power adjustment becomes the particular value that is fit to the information record with evaluation index and pulse width adjustment with evaluation index.

9. optic recording method according to claim 7 is characterized in that:

In addition, above-mentioned optical recorder is under predetermined specific writing speed, carry out determining step, adjustment according to above-mentioned set-up procedure, in the time can writing down with certain quality, being judged as can record, and according to the adjustment of above-mentioned set-up procedure, in the time can not writing down, be judged as and be difficult to record with certain quality.

10. optic recording method according to claim 8 is characterized in that:

In addition, above-mentioned optical recorder is under predetermined specific writing speed, carry out determining step, adjustment according to above-mentioned set-up procedure, in the time can writing down with certain quality, being judged as can record, and according to the adjustment of above-mentioned set-up procedure, in the time can not writing down, be judged as and be difficult to record with certain quality.

11. optic recording method according to claim 9 is characterized in that:

In addition, above-mentioned optical recorder is carried out controlled step, is judged as in above-mentioned determining step in the time of can writing down under predetermined specific writing speed, carries out real record with this specific writing speed; In above-mentioned determining step, be judged as when under this specific writing speed, being difficult to write down, write down or end record with the writing speed that is lower than this specific writing speed.

12. optic recording method according to claim 10 is characterized in that:

In addition, above-mentioned optical recorder is carried out controlled step, is judged as in above-mentioned determining step in the time of can writing down under predetermined specific writing speed, carries out real record with this specific writing speed; In above-mentioned determining step, be judged as when under this specific writing speed, being difficult to write down, write down or end record with the writing speed that is lower than this specific writing speed.

13. optic recording method according to claim 9 is characterized in that:

Above-mentioned optical recorder is judged as in the time of can writing down under predetermined specific writing speed in above-mentioned determining step, carries out real record with this specific writing speed; In above-mentioned determining step, be judged as when under this specific writing speed, being difficult to write down, carry out above-mentioned other recording layer testing procedures once more.

14. optic recording method according to claim 10 is characterized in that:

Above-mentioned optical recorder is judged as in the time of can writing down under predetermined specific writing speed in above-mentioned determining step, carries out real record with this specific writing speed; In above-mentioned determining step, be judged as when under this specific writing speed, being difficult to write down, carry out above-mentioned other recording layer testing procedures once more.

15. optic recording method according to claim 9 is characterized in that:

In addition, above-mentioned optical recorder is carried out step display, show the judged result of above-mentioned determining step or the pairing contents processing of judged result at least any.

16. optic recording method according to claim 10 is characterized in that:

In addition, above-mentioned optical recorder is carried out step display, show the judged result of above-mentioned determining step or the pairing contents processing of judged result at least any.

17. optic recording method according to claim 11 is characterized in that:

In addition, above-mentioned optical recorder is carried out step display, show the judged result of above-mentioned determining step or the pairing contents processing of judged result at least any.

18. optic recording method according to claim 12 is characterized in that:

In addition, above-mentioned optical recorder is carried out step display, show the judged result of above-mentioned determining step or the pairing contents processing of judged result at least any.

19. optic recording method according to claim 13 is characterized in that:

In addition, above-mentioned optical recorder is carried out step display, show the judged result of above-mentioned determining step or the pairing contents processing of judged result at least any.

20. optic recording method according to claim 14 is characterized in that:

In addition, above-mentioned optical recorder is carried out step display, show the judged result of above-mentioned determining step or the pairing contents processing of judged result at least any.

21. optic recording method according to claim 9 is characterized in that:

In addition, above-mentioned optical recorder executive logging step, with the judged result of above-mentioned determining step or the pairing contents processing of judged result at least any, record at least in any of this optical recorder of carrying out the recording medium of test record or carrying out test record.

22. optic recording method according to claim 10 is characterized in that:

In addition, above-mentioned optical recorder executive logging step, with the judged result of above-mentioned determining step or the pairing contents processing of judged result at least any, record at least in any of this optical recorder of carrying out the recording medium of test record or carrying out test record.

23. optic recording method according to claim 11 is characterized in that:

In addition, above-mentioned optical recorder executive logging step, with the judged result of above-mentioned determining step or the pairing contents processing of judged result at least any, record at least in any of this optical recorder of carrying out the recording medium of test record or carrying out test record.

24. optic recording method according to claim 12 is characterized in that:

In addition, above-mentioned optical recorder executive logging step, with the judged result of above-mentioned determining step or the pairing contents processing of judged result at least any, record at least in any of this optical recorder of carrying out the recording medium of test record or carrying out test record.

25. optic recording method according to claim 13 is characterized in that:

In addition, above-mentioned optical recorder executive logging step, with the judged result of above-mentioned determining step or the pairing contents processing of judged result at least any, record at least in any of this optical recorder of carrying out the recording medium of test record or carrying out test record.

26. optic recording method according to claim 14 is characterized in that:

In addition, above-mentioned optical recorder executive logging step, with the judged result of above-mentioned determining step or the pairing contents processing of judged result at least any, record at least in any of this optical recorder of carrying out the recording medium of test record or carrying out test record.

27. optic recording method according to claim 15 is characterized in that:

In addition, above-mentioned optical recorder executive logging step, with the judged result of above-mentioned determining step or the pairing contents processing of judged result at least any, record at least in any of this optical recorder of carrying out the recording medium of test record or carrying out test record.

28. optic recording method according to claim 16 is characterized in that:

In addition, above-mentioned optical recorder executive logging step, with the judged result of above-mentioned determining step or the pairing contents processing of judged result at least any, record at least in any of this optical recorder of carrying out the recording medium of test record or carrying out test record.

29. optic recording method according to claim 17 is characterized in that:

In addition, above-mentioned optical recorder executive logging step, with the judged result of above-mentioned determining step or the pairing contents processing of judged result at least any, record at least in any of this optical recorder of carrying out the recording medium of test record or carrying out test record.

30. optic recording method according to claim 18 is characterized in that:

In addition, above-mentioned optical recorder executive logging step, with the judged result of above-mentioned determining step or the pairing contents processing of judged result at least any, record at least in any of this optical recorder of carrying out the recording medium of test record or carrying out test record.

31. optic recording method according to claim 19 is characterized in that:

In addition, above-mentioned optical recorder executive logging step, with the judged result of above-mentioned determining step or the pairing contents processing of judged result at least any, record at least in any of this optical recorder of carrying out the recording medium of test record or carrying out test record.

32. optic recording method according to claim 20 is characterized in that:

In addition, above-mentioned optical recorder executive logging step, with the judged result of above-mentioned determining step or the pairing contents processing of judged result at least any, record at least in any of this optical recorder of carrying out the recording medium of test record or carrying out test record.

33. optic recording method according to claim 9 is characterized in that:

In addition, above-mentioned optical recorder executive logging step derives the evaluation index that derived in steps and the adjustment result of above-mentioned set-up procedure with the judged result of the above-mentioned determining step of expression, above-mentioned other recording layer illuminate conditions

Shown in the data any, record at least in any of this optical recorder of carrying out the recording medium of test record or carrying out test record.

34. optic recording method according to claim 10 is characterized in that:

In addition, above-mentioned optical recorder executive logging step, the judged result of the above-mentioned determining step of expression, above-mentioned other recording layer illuminate conditions are derived any in the data shown in the adjustment result of the evaluation index that derived in steps and above-mentioned set-up procedure, record at least in any of this optical recorder of carrying out the recording medium of test record or carrying out test record.

35. optic recording method according to claim 33 is characterized in that:

Shown in above-mentioned evaluation index and the above-mentioned adjustment result in the data one is contained the data relevant with the test record condition.

36. optic recording method according to claim 34 is characterized in that:

Shown in above-mentioned evaluation index and the above-mentioned adjustment result in the data one is contained the data relevant with the test record condition.

37. an optical recorder is characterized in that:

When the recording medium that comprises multilayer with a recording layer and other recording layers is carried out laser radiation and recorded information, carry out the record and the regeneration of detecting information at the test zone of each recording layer, derive the illuminate condition of laser, and utilize this illuminate condition that above-mentioned recording medium is carried out laser radiation, with recorded information, and possess:

Reference recording layer test cell on an above-mentioned recording layer, carries out changing with the kind of record condition the record and the regeneration of corresponding detecting information;

Reference recording layer illuminate condition lead-out unit, according to the obtained test result of said reference recording layer test cell, derivation is fit to record information to an illuminate condition on the recording layer;

Other recording layer test cells are less than change number of times in the said reference recording layer test cell with the kind of test record condition change number of times, carry out the record and the regeneration of detecting information on above-mentioned other recording layers; And

Other recording layer illuminate condition lead-out units, test result and above-mentioned other the recording layer test cells obtained test result obtained according to said reference recording layer test cell derive the illuminate condition that is fit to record information on above-mentioned other recording layers.

38. an optical recorder is characterized in that:

When the recording medium that comprises multilayer with a recording layer and other recording layers is carried out laser radiation and recorded information, carry out the record and the regeneration of detecting information at the test zone of each recording layer, derive the illuminate condition of laser, and utilize this illuminate condition that above-mentioned recording medium is carried out laser radiation, with recorded information, and possess:

Reference recording layer test cell on an above-mentioned recording layer, carries out changing with the kind of record condition the record and the regeneration of corresponding detecting information;

Reference recording layer illuminate condition lead-out unit, according to the obtained test result of said reference recording layer test cell, derivation is fit to record information to an illuminate condition on the recording layer;

Other recording layer test cells under any test record condition in the test record condition of being undertaken by said reference recording layer test cell, carry out the record and the regeneration of detecting information on above-mentioned other recording layers; And

Other recording layer illuminate condition lead-out units, test result and above-mentioned other the recording layer test cells obtained test result obtained according to said reference recording layer test cell derive the illuminate condition that is fit to record information on above-mentioned other recording layers.

39. an optical recorder is characterized in that:

When the recording medium that comprises multilayer with a recording layer and other recording layers is carried out laser radiation and recorded information, carry out the record and the regeneration of detecting information at the test zone of each recording layer, derive the illuminate condition of laser, and utilize this illuminate condition that above-mentioned recording medium is carried out laser radiation, with recorded information, and possess:

Reference recording layer test cell changing under the corresponding test record condition with condition repeatedly, carries out the record and the regeneration of detecting information on an above-mentioned recording layer;

Reference recording layer illuminate condition lead-out unit, according to the obtained test result of said reference recording layer test cell, derivation is fit to record information to an illuminate condition on the recording layer;

Other recording layer test cells are less than employed conditional number in the said reference recording layer test cell with the test record conditional number, carry out the record and the regeneration of detecting information on above-mentioned other recording layers; And

Other recording layer illuminate condition lead-out units, test result and above-mentioned other the recording layer test cells obtained test result obtained according to said reference recording layer test cell derive the illuminate condition that is fit to record information on above-mentioned other recording layers.

40., it is characterized in that possessing according to the described optical recorder of claim 37:

The 1st detecting information record cell under multiple test record condition, writes down detecting information on an above-mentioned recording layer;

The 1st detecting information regeneration unit will be regenerated by the detecting information that above-mentioned the 1st detecting information record cell is write down;

Reference recording layer illuminate condition lead-out unit, according to above-mentioned the 1st detecting information record cell and the obtained detecting information of above-mentioned the 1st detecting information regeneration unit, derivation is fit to record information to an illuminate condition on the recording layer;

The 2nd detecting information record cell writes down detecting information on above-mentioned other recording layers;

The 2nd detecting information regeneration unit will be regenerated by the detecting information that above-mentioned the 2nd detecting information record cell is write down;

Converting unit, carry out the conversion of above-mentioned the 1st detecting information record cell and above-mentioned the 1st detecting information regeneration unit, carry out the conversion of above-mentioned the 2nd detecting information record cell and above-mentioned the 2nd detecting information regeneration unit, and make the conversion times of regeneration of the detecting information of the record of detecting information of above-mentioned the 2nd detecting information record cell and above-mentioned the 2nd detecting information regeneration unit, be less than the conversion times of regeneration of the detecting information of the record of detecting information of above-mentioned the 1st detecting information record cell and above-mentioned the 1st detecting information regeneration unit, change the record and the regeneration of above-mentioned detecting information with this; And

Other recording layer illuminate condition lead-out units, according to above-mentioned the 2nd detecting information record cell and obtained detecting information and the obtained test result of above-mentioned other recording layer test cells of above-mentioned the 2nd detecting information regeneration unit, derive the illuminate condition that is fit to record information on above-mentioned other recording layers.

41. an optical recorder is characterized in that:

When the recording medium that comprises multilayer with a recording layer and other recording layers is carried out laser radiation and recorded information, carry out the record and the regeneration of detecting information at the test zone of each recording layer, derive the illuminate condition of laser, and utilize this illuminate condition that above-mentioned recording medium is carried out laser radiation, with recorded information, and possess:

Reference recording layer test cell on an above-mentioned recording layer, repeatedly is provided with the record and the regeneration of changing the detecting information that is constituted by the stage of record condition;

Reference recording layer illuminate condition lead-out unit, according to the obtained test result of said reference recording layer test cell, derivation is fit to record information to an illuminate condition on the recording layer;

Other recording layer test cells are less than number of times in the said reference recording layer test cell with the number of times that is provided with of the record of detecting information and regeneration, carry out the record and the regeneration of detecting information on above-mentioned other recording layers; And

Other recording layer illuminate condition lead-out units, test result and above-mentioned other the recording layer test cells obtained test result obtained according to said reference recording layer test cell derive the illuminate condition that is fit to record information on above-mentioned other recording layers.

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