CN100444251C - Optical recording medium, method and apparatus for recording data thereon - Google Patents
Optical recording medium, method and apparatus for recording data thereon Download PDFInfo
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- CN100444251C CN100444251C CNB2003801091239A CN200380109123A CN100444251C CN 100444251 C CN100444251 C CN 100444251C CN B2003801091239 A CNB2003801091239 A CN B2003801091239A CN 200380109123 A CN200380109123 A CN 200380109123A CN 100444251 C CN100444251 C CN 100444251C
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
- G11B7/00456—Recording strategies, e.g. pulse sequences
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0055—Erasing
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Abstract
An optical recording medium, a method and an apparatus of recording data on the optical recording medium. A recording waveform that includes a recording pattern for high-speed recording and an erasure pattern with multi-pulse train is generated. Using the generated recording waveform, digital data is recorded as a mark or space. A low write power level of the recording pattern is set to be higher than a bias power level, and high and low erase power levels are applied as pulses.
Description
Technical field
The present invention relates to data are recorded on the optical record medium, more particularly, the optical record medium that relates to a kind of storage information relevant with the write-in policy that is used for high-speed record, and a kind of being used for data are recorded in method and apparatus on this optical record medium.
Background technology
When data are recorded on the optical record medium, in the track of CD, form mark.In the read-only disk such as compact disk ROM (read-only memory) (CD-ROM) and digital multi-purpose disk-ROM (read-only memory) (DVD-ROM), mark is formed pit.But such as compact disk-record/can rewrite (CD-R/RW) but and in the recordable disc of digital multi-purpose disk-record/can rewrite/random access memory (DVD-R/RW/RAM), recording layer is scribbled the phase change layer that enters crystallization or non-crystalline state in response to temperature variation, and mark is formed by the variation in the phase place of this phase change layer.For the recording of optimization recordable disc, write-in policy is used and depends on the type of recordable disc.In addition, record condition changes between can be from the driver to the driver.Therefore, has the incompatible situation of optical record medium that on the optical record medium that writes down on the driver and another driver, writes down.
Simultaneously, according to input, data record method can be divided into mark edge record and mark position record.In the mark position recording method, the amplitude of detected RF signal is born or is just changed to from negative from just changing at the record position of mark.In the recording method of mark edge, the amplitude of detected RF signal is born or is just changed to from negative from just changing at two edges of mark.Therefore, accurately being recorded in the quality of improving reproducing signal of the edge of mark is important factor.
Yet, scribbled in the recordable disc of phase change layer at recording layer, change with the length of mark or the interval between the mark by the shape on the back edge of the mark of traditional mark edge recording method record.In other words, the back edge of mark is greater than the forward position of this mark, and this has reduced recording.When the length of the mark that forms is big relatively, because the accumulation of heat causes the reduction of recording to become more serious in the dish.
Figure 1A and 1B illustrate traditional being used to and write down the wave recording that non-return-to-zero is inverted (NRZI) data.In Figure 1A, the time cycle of " Tw " expression recoding/reproduction clock signal.In the recording method of mark edge, the high level of NRZI data is registered as mark, and the low level of NRZI data is registered as at interval.The wave recording that is used to form mark is known as logging mode, and being used to form at interval, the wave recording of (or being used to wipe mark) is known as erasing mode.Traditional wave recording uses multipulse sequence to be adjusted into three level, i.e. Pw, Pe and Pb as logging mode and with the power level of each pulse.In other words, the power level of the multipulse sequence of composition logging mode equals Pw and Pb.In addition, be used to form the power level Pe of the low level erasing mode of NRZI data, promptly at interval, be maintained at predetermined DC level.Here, Pw represents Writing power, and Pb represents bias power, and Pe represents erase power.
As mentioned above, because the erasing mode in the traditional record waveform is maintained at predetermined DC level in predetermined amount of time, so 0-200 degree centigrade temperature is imposed on the zone of using erasing mode continuously.Therefore,, then cause the distortion of the shape of mark, reduce recording if data recording is repeated many times.Therefore, along with the employing of holding more multidata high density and high-speed linear pen recorder, the period of time T of recoding/reproduction clock signal reduces, and the heat between the multipulse sequence of composition wave recording is disturbed increase.As a result, the distortion of the shape of mark becomes more serious.
In other words, because using the erase power with predetermined DC level to carry out during data recording wipes, so cause recoding/reproduction signal to be reduced such as carrier-to-noise ratio (C/N) signal because the heat between a plurality of recording impulses is disturbed, and mark is intactly formed then by crystallization by non-, causes the reduction of reproducing characteristic.Specifically, when carrying out data recording with the increase data rate with high speed, the distortion of recoding/reproduction signal increases significantly.
Summary of the invention
The invention provides optical record medium and a kind of method and apparatus that is used at this recording data from optical recording medium of a kind of storage information relevant with the write-in policy that is used for high-speed record.
The present invention also provides the optical record medium of a kind of storage information relevant with wave recording, the mark that has improved edge by this wave recording can be recorded during high-speed record, and a kind ofly is used to use this wave recording to come method for recording data and equipment.
The present invention also provides the optical record medium of a kind of storage information relevant with the wave recording that is used for phase change disc and a kind ofly is used to use this wave recording to come method for recording data and equipment.
The present invention also provides the optical record medium of a kind of storage information relevant with wave recording, owing to the heat between the mark adjacent during mark edge record is disturbed the distortion of the mark that is recorded that causes and can be minimized by this wave recording, and a kind ofly be used to use this wave recording to come method for recording data and equipment.
The present invention also provides the optical record medium of a kind of storage about the information of wave recording, because the shape distortion on the forward position of the mark that the record that repeats causes and edge, back can be suppressed by this wave recording, and a kind ofly be used to use this wave recording to come method for recording data and equipment.
The present invention also provides a kind of and is recorded to optical record medium on it about the logging mode that is used to form mark and/or the additional information that is used to form erasing mode at interval, allow the required optimum power level of data recording easily to be determined thus, and no matter load the driver of this optical record medium, and a kind of method and apparatus that is used at this recording data from optical recording medium.
The present invention also provides the optical record medium of a kind of storage information relevant with the wave recording that is used for the optimization jittering characteristic, and a kind ofly is used to use this wave recording to come method for recording data and equipment.
The present invention also provides the optical record medium of the relevant information of the ratio of duration of duration of a kind of storage and the multipulse sequence of the wave recording that is used for the minimum jitter characteristic and final pulse, and a kind ofly is used to use this wave recording to come method for recording data and equipment.
The present invention also provides the optical record medium of a kind of storage information relevant with the cool and add temperature-sensitive ingredients of the final pulse of the wave recording that is used for the minimum jitter characteristic, and a kind ofly is used to use this wave recording to come method for recording data and equipment.
According to an aspect of the present invention, provide a kind of and write down, wipe and reproduce the optical record medium of data, wherein, comprise that the bookkeeping information of power information of the high-speed record of the logging mode that is used for data recording is recorded in the specific region of recording layer.
According to an aspect of the present invention, provide a kind of power information to be recorded thereon optical record medium, this power information indication logging mode is formed by the record multipulse sequence that comprises first pulse, multipulse sequence and final pulse, wherein, described record multipulse sequence has high and low Writing power level, and low Writing power level is set to be higher than bias power level.
According to a further aspect in the invention, provide a kind of data are recorded in method on the optical record medium, this method comprises: produce the wave recording with the logging mode that is used for high-speed record; With the wave recording that use to produce first rank of data is formed mark and the second level of data is formed at interval, wherein, logging mode is formed by the record multipulse sequence that comprises first pulse, multipulse sequence and final pulse, wherein, the power level of described record multipulse sequence equals high or low Writing power level, and low Writing power level is higher than the bias power level of the final pulse that writes down multipulse sequence, and the ratio of the duration of final pulse and the duration of multipulse sequence is determined according to the scope of the shake that is allowed by system.
According to a further aspect in the invention, provide a kind of data are recorded in method on the optical record medium, this method comprises: produce and have the logging mode that has multipulse sequence that is used for high-speed record and the wave recording of erasing mode; With the wave recording that uses this generation first rank of data is formed mark and the second level of data is formed at interval, wherein, logging mode is made up of the record multipulse sequence that comprises first pulse, multipulse sequence and final pulse, wherein, the power level of record multipulse sequence equals high or low Writing power level, and low Writing power level is higher than the bias power level of the final pulse that writes down multipulse sequence, and the ratio of the duration of final pulse and the duration of multipulse sequence is determined according to the scope of the shake that is allowed by system.
According to a further aspect in the invention, provide a kind of data are recorded in the equipment that comprises wave recording generation unit and pickup unit on the optical record medium.Wave recording produces the wave recording that circuit produces the logging mode with the high-speed record that is used to import data.Pickup unit forms mark or at interval with record data according to the wave recording of this generation by light shining on the optical record medium.Wherein, logging mode is formed by the recording impulse sequence that comprises first pulse, multipulse sequence and final pulse, wherein, the power level of described recording impulse sequence equals high or low power level, and low Writing power level is higher than the bias power level of the final pulse of this record multipulse sequence, and the ratio of the duration of final pulse and the duration of multipulse sequence is determined according to the scope of the shake that is allowed by system.
Additional aspects of the present invention and/or advantage part are in the following description set forth, and are conspicuous from describe partly, maybe can understand by implementing the present invention.
Description of drawings
From below in conjunction with the description of accompanying drawing to embodiment, these and/or other aspect of the present invention and advantage will become clear and be easier to and understand, wherein:
Figure 1A illustrates non-return-to-zero and is inverted (NRZI) data, and Figure 1B illustrates traditional wave recording;
Fig. 2 is the block scheme according to the equipment of the record data of the embodiment of the invention;
Fig. 3 is the example of Fig. 2;
Fig. 4 A illustrates the example that is produced the wave recording of circuit generation by wave recording to 7E;
Fig. 8 A illustrates the waveform that is used to explain 4 types erasing mode according to of the present invention to 8E;
Fig. 9 A illustrates the waveform that is used to reduce shake according to of the present invention to 9D;
Figure 10 shows shake and the recording level chart with respect to the relation between the ratio of the duration of duration of the multipulse sequence of the wave recording among Fig. 9 and final pulse;
Figure 11 is the chart that shows the relation between the cool and add temperature-sensitive ingredients of the final pulse in the wave recording of shake and Fig. 9; With
Figure 12 is the process flow diagram that is used to explain according to the method for recording data of the embodiment of the invention.
Embodiment
To describe embodiments of the invention in detail now, its example is enumerated in the accompanying drawings, and wherein, identical label is represented identical parts all the time.Below embodiment is described to explain the present invention by reference pattern.
Fig. 2 is the block scheme according to the equipment that is used for record data of the embodiment of the invention.
With reference to figure 2, the equipment that is used for record data is by forming marks or come record data at interval at optical record medium 200, and comprises that pickup unit 1, wave recording produce circuit 2 and channel modulator 3.
Fig. 3 is the example of Fig. 2.Realization is represented by identical label with the piece of the function identical functions of Fig. 2, and its description will not be repeated.
With reference to figure 3, the equipment that is used for record data comprises pickup unit 1, wave recording generation unit 2 and channel modulator 3.Pickup unit 1 comprises motor 11, servo circuit 12, optical head 13 and laser drive circuit 14.Motor 11 rotary optical recording mediums 200.Optical head 13 with laser radiation to optical record medium 200 or receive the laser that reflects from optical record medium 200.The servocontrol of servo circuit 12 actuating motors 11 and optical head 13.Laser drive circuit 14 drives the laser instrument (not shown) that is included in the optical head 13.
Fig. 4 A to 4D illustrate produce by wave recording generation unit 2 and purpose be to improve the wave recording of the edge characteristic during the data recording.
The NRZI data change with the modulator approach of being used by channel modulator 3.When run length (RLL) (1,7) when being used as modulator approach, the minimum length of the mark that is recorded equals 2T, and the maximum length of the mark that is recorded equals 8T.In addition, RLL (2,10) is that 8-14 modulation (EFM), 8-14 modulation add (EFM+), D (8-15) or double modulation and be used as modulator approach, and the minimum length of the mark that is recorded equals 3T, and the minimum length of the mark that is recorded equals 1T.Here, Matsushita Electric Co., Ltd. advises D (8-15) in calendar year 2001 in " Optical disc recording system of 25GB Capacity ".Double modulation is open in 99-42032 number korean patent application, its title is " Methodof aligning RLL code with improved DC restricting function; encoding anddecoding method and decoding apparatus ", and this patented claim is announced in submission on September 30th, 1999 and on November 25th, 2000 by the applicant.
In this embodiment, employed wave recording will be described when relating to the NRZI data when low level that is formed mark and NRZI data when the high level of NRZI data is formed at interval, and described NRZI data comprise the logging mode that is used to write down the mark with 7T length, be used to form the erasing mode at the interval with 3T length and be used to write down the logging mode of the mark with 3T length.
To 4D, at the wave recording 1,2 and 3 that is used for the NRZI data, the logging mode that is used to write down the mark with 7Tw length is formed by i.e. first pulse of record multipulse sequence, multipulse sequence and final pulse (or cooling pulse) with reference to figure 4B.The logging mode that is used to write down the mark with 3T length is formed by first pulse and final pulse.In Fig. 4, when formation has the mark of multipulse sequence of N * Tw (wherein N is a natural number), have the mark that the logging mode of the recording impulse of (N-1) * Tw changes in from minimum T to maximum T scope at its length and be used.In other words, the mark with 3T length uses and to comprise the logging mode of 2 multipulse sequences and form, and the mark with 7T length uses and comprises the logging mode of 6 multipulse sequences and form.
First pulse of logging mode and multipulse sequence have two power levels, i.e. Pw1 and Pw2.Here, Pw1 represents the high level of Writing power, and Pw2 represents low Writing power level.Low Writing power level is that Pw2 is set to be higher than bias power level Pb.It is Pw1 and bias power level Pb that the final pulse of logging mode has high Writing power level.
Reduce owing to be provided to the general power of record mark when data (, when the period of time T of recoding/reproduction clock signal reduces) when being recorded at a high speed, so but the shape distortion of the mark that is recorded with the increase data rate.Therefore, must increase Writing power along with the increase of the rotational speed of coiling.Be set to be higher than bias power level Pb by hanging down Writing power level Pw2,, can in recording layer, form mark like this even also can absorb enough heats at high data recording speed recording layer.
Erasing mode is also formed by multipulse sequence.That is to say that though can have traditional DC level according to the erasing mode of this embodiment, it preferably forms by wiping multipulse sequence.Wipe multipulse sequence and have two power level Ppe and Pbe.Here, power level Ppe represents the peak value erasing power level and can be known as high erasing power level, power level Pbe represent to setover erasing power level and can be known as low erasing power level.
In wave recording 1, the biasing erasing power level Pbe of erasing mode equals the erasing power level Pe of traditional DC level.In wave recording 2, the peak value erasing power level Ppe of erasing mode equals erasing power level Pe.In wave recording 3, erasing power level Pe is set between the peak value erasing power level Ppe and bias power level Pbe of erasing mode.
Being included in two power level Ppe that wipe multipulse sequence in the erasing mode of the present invention and the duration sum of Pbe is controlled in the scope of 0.25-2.0Tw with respect to timing window Tw (cycle of reference record/reproduction clock signal).Therefore, data can be recorded by two power level Ppe of the thermal characteristics selecting to be suitable for coiling and the duration of Pbe, improve recording thus.
, in the embodiment of 4D, be used to form the power level Ppe that wipes multipulse sequence of mark and the duration sum of Pbe and equal 1.0Tw at Fig. 4 B with 3T length.Duration of high level of wiping first pulse of multipulse sequence equals 0.5Tw, and wipe duration of high level of the final pulse of multipulse sequence can be greater than 0.5Tw.
In addition, in the embodiment of Fig. 4 B, the period of time T of the multipulse sequence of logging mode equals 1.0Tw.Low Writing power level Pw2 is higher than bias power level Pb and peak value erasing power level Ppe and is lower than high Writing power level Pw1.Therefore, the pass between peak value erase power Ppe, low Writing power level Pw2 and the high Writing power level Pw1 is Ppe≤Pw2≤Pw1.Here, low Writing power level Pw2 can be lower than the peak value erasing power level Ppe of erasing mode and be higher than biasing erasing power level Pbe, so their relation can be Pbe≤Pw2≤Ppe.In addition, low Writing power level Pw2 is lower than biasing erasing power level Pbe, and their pass is Pbe 〉=Pw2.The level that is biased the zone of power level Pb influence is lower than Writing power level Pw2, and their pass is Pb≤Pw2.The level that is biased the zone of power P b influence is lower than peak value erasing power level Ppe, and their pass is Pb≤Ppe.
Fig. 5 A illustrates non-return-to-zero and is inverted (NRZI) data.Fig. 5 B illustrates by wave recording to 5D and produces the wave recording that circuit 2 produces, and the quantity of the multipulse sequence in described wave recording in each logging mode is
Int(N/2 * T).To Fig. 4 B only be described to the difference between the wave recording of Fig. 4 D to 5D with reference to figure 5B.Term " int " expression integer.
With reference to figure 5B to 5D, because the period of time T at the multipulse sequence of three wave recordings 4,5 that are used for the NRZI data and 6 logging modes is 2Tw, so the amount of incident light that can be by the increase dish and need not increase Writing power and erase power forms quality symbol is improved recording thus.Under the situation of the mark with T or 3T signal type, the period of time T of multipulse sequence can not be 2Tw.
Fig. 6 A illustrates non-return-to-zero and is inverted (NRZI) data.Fig. 6 B illustrates by wave recording to 6D and produces the wave recording that circuit 2 produces, and the duration of wiping the power level of multipulse sequence in described wave recording equals 2Tw.To 6D, will Fig. 4 B only be described about Fig. 6 B to the difference between the wave recording of 4D.
With reference to figure 6B to 6D, at the wave recording 7,8 and 9 that is used for the NRZI data, form the peak value erasing power level Ppe that wipes multipulse sequence of erasing mode and the duration sum of the biasing erasing power level Pbe that wipes multipulse sequence that forms erasing mode and equal 2Tw.Wipe the duration of the high level of multipulse sequence and can be longer than 1.0Tw, and the low level duration of wiping multipulse sequence can be shorter than 1.0Tw.
Fig. 7 A illustrates non-return-to-zero and is inverted (NRZI) data.Fig. 7 B illustrates by wave recording to 7D and produces the wave recording that circuit 2 produces, and the duration of the level of the duration of the level of the multipulse sequence of logging mode and erasing mode is 2Tw in described wave recording.To 7D, will Fig. 4 B only be described about Fig. 7 B to the difference between the wave recording of 4D.
To 7D, be used for three wave recordings 10,11 and 12 of NRZI data with reference to figure 7B, the period of time T of the multipulse sequence of logging mode equals 2Tw, and the period of time T of the multipulse sequence of erasing mode equals 2Tw.With with Fig. 6 B to the identical mode of the wave recording of 6D, the duration sum of peak value erasing power level Ppe and biasing erasing power level Pbe equals 2Tw.
Fig. 8 A illustrates non-return-to-zero and is inverted (NRZI) data.Fig. 8 B illustrates the waveform that is used to explain 4 types erasing mode according to of the present invention to 8E.
To 8E, can have 4 types erasing mode, i.e. LH type, LL type, HH type and HL type with reference to figure 8B according to wave recording of the present invention.Difference between 4 types of erasing mode is marked to the circle among the 8D by Fig. 8 B and is beneficial to understand.At first, the situation of the power level of the LH type low level that equals to occur in the erasing mode corresponding to the power level of first pulse and the final pulse high level that equals to occur in the erasing mode.The low level situation that the LL type equals to occur in the erasing mode corresponding to the power level of the final pulse and first pulse.The situation of the high level that the HH type equals to occur in the erasing mode corresponding to the power level of the final pulse and first pulse.The situation of the high level that the low level that the HL type equals to occur in the erasing mode corresponding to the power level of final pulse and the power level of first pulse equal to occur in the erasing mode.
In the embodiment of 8E, in the wave recording 7,8 and 9 of 6D, the period of time T of the multipulse sequence of logging mode equals 1Tw as Fig. 6 B at Fig. 8 B, and the period of time T of the multipulse sequence of erasing mode equals 2Tw.Yet Fig. 4 B that Fig. 8 B also can be applicable to displayed record waveform 1,2 and 3 to the embodiment of 8E is to 4D, and the period of time T of the multipulse sequence of the period of time T of the multipulse sequence of logging mode and erasing mode equals 1Tw in wave recording 1,2 and 3.Fig. 5 B that Fig. 8 B also can be applicable to displayed record waveform 4,5 and 6 to the embodiment of 8E is to 5D, and the period of time T that the period of time T of the multipulse sequence of logging mode equals the multipulse sequence of 2Tw and erasing mode in wave recording 4,5 and 6 equals 1Tw.Fig. 7 B that Fig. 8 B also can be applicable to displayed record waveform 10,11 and 12 to the embodiment of 8E is to 7D, and the period of time T of the multipulse sequence of the period of time T of the multipulse sequence of logging mode and erasing mode equals 2Tw in wave recording 10,11 and 12.
That is to say that all wave recordings that Fig. 4 B shows in the 7D are the HH type.Yet wave recording can be HL type, LH type or LL type.The type of wave recording is determined based on the length of the mark that is formed by the logging mode that occurs before erasing mode and/or afterwards.Based on before the interval that forms by erasing mode and/or the length of the mark that forms afterwards come from 4 kinds of erasing modes, to select one type erasing mode adaptively.
Simultaneously, can be recorded in the specific region of recordable disc, such as introducing the zone, or be registered as header with the form of swinging signal about the information (type information) of 4 types erasing modes.Therefore, recording medium can read type information and produce corresponding wave recording from introducing zone or swinging signal during data recording, thereby forms mark and/or interval.
In addition, 4 types erasing mode can be used as indication at the symbol of data recording with the type of the running speed of reproducing mid-game or mark.For example, can indicate the dish of the erasing mode that uses the LH type to have the running speed of the x20 of the type of using erasing mode.
Except that information, about also being recorded to optical record medium according to the Writing power of logging mode, the type of erase power, disc-type, dish size and recording layer such as the information of single or multiple lift according to erasing mode about 4 types of erasing modes.Specifically, the information of logging mode that comprises the cool and add temperature-sensitive ingredients of the ratio of duration of duration of multipulse sequence of the recording impulse that is used for the optimization jittering characteristic that Fig. 9 A shows in the 9D and final pulse and final pulse can be recorded to optical record medium.
In case this optical record medium that above-mentioned information is recorded in it is loaded onto on the equipment of record data, this equipment that is used for record data does not need other being used to select the test record of best titime and erase power maybe can use the power of storage to carry out test record.Therefore, can reduce and be used to time of selecting optimum power level required.
Fig. 9 A illustrates the wave recording that is used to alleviate shake according to of the present invention to 9D.
Fig. 9 A shows the example of NRZI data.When the low level that is formed mark and NRZI data when the high level of NRZI data was formed at interval, wave recording comprised the logging mode that is used to write down the mark with 7T length, be used to form the erasing mode at the interval with 3T length and be used to write down the logging mode of the mark with 3T length.
Fig. 9 B illustrates the wave recording that typically is used for the NRZI data that Fig. 9 A shows.Ttop represents the duration of first pulse, Tmp represent to be included in each pulse in the multipulse sequence duration (below, the duration that is called multipulse sequence), Tlp represents the duration of final pulse, and Tcl represents the cool and add temperature-sensitive ingredients during the final pulse.
Fig. 9 C illustrates according to wave recording of the present invention.The power level of first pulse and multipulse sequence is Pw1 and Pw2.Low Writing power level is that Pw2 is set to be higher than bias power level Pb.The final pulse of logging mode has high Writing power level Pw1 and bias power level Pb.Erasing mode has traditional DC level.
Fig. 9 D illustrates according to wave recording of the present invention.The power level of first pulse and multipulse sequence is Pw1 and Pw2.Low Writing power level is that Pw2 is set to be higher than bias power level Pb.The final pulse of logging mode has high Writing power level Pw1 and bias power level Pb.Erasing mode has the multipulse sequence of wiping of peak value erase power Ppe and biasing erasing power level Pbe.The erasing power level Pe of the DC level that the biasing erasing power level Pbe of erasing mode is set to equal traditional.The duration sum of Ppe and Pbe equals 1.0Tw.
About the wave recording of Fig. 9 C according to the present invention and 9D, the duration T lp of the duration T mp that shows by changing multipulse sequence and final pulse has been shown among Figure 10 and has searched for the chart of the jittering characteristic that the best titime condition obtains.The chart that shows the cool and add temperature-sensitive ingredients Tcl by changing final pulse and search for the jittering characteristic that the best titime condition obtains has been shown among Figure 11.
Figure 10 shows shake and the recording power chart with respect to the relation between the ratio of the duration of duration of the multipulse sequence in the wave recording of Fig. 9 and final pulse.According to record condition, be 0.149 μ m (this length is corresponding to the mark that is recorded of the minimum of 2Tw during when the code that uses according to RLL (1,7)) in the length of the mark that is recorded of 400nm wavelength place minimum.When bias power Pb is 0.2mW and erase power Pe when being 1.2mW, th writing power P w reduces along with the increase of the ratio of Tlp and Tmp, but increases with respect to shake.It is evident that from this result, can obtain the scope of suitable Tlp.
As hinting among Figure 10, when the scope of the shake that is allowed by system was set to 7%, the scope of Tlp/Tmp was corresponding to 0.9-1.3.Though do not show among Figure 10, when the scope of shake was 8%, the scope of Tlp/Tmp was corresponding to 0.7-1.4.Therefore, the scope of Tlp/Tmp can be determined according to the jitter range that is allowed by system.
Figure 11 is the chart of the relation between the cool and add temperature-sensitive ingredients of shake in the wave recording of displayed map 9 and final pulse.When changing the cool and add temperature-sensitive ingredients Tcl of final pulse, estimating shake, can find out shake approach along with the cool and add temperature-sensitive ingredients Tcl of final pulse 2Tw minimum the mark that is recorded and reduce continuously.Consider jittering characteristic, optimum Tcl equals the mark that is recorded of the minimum of 2Tw.
Yet, the cool and add temperature-sensitive ingredients Tcl of final pulse can be set according to the scope of the shake that allows by system.For example, when the scope of the shake that is allowed by system was 7%, the scope of the cool and add temperature-sensitive ingredients Tcl of final pulse was that 0.7Tw is to 2.0Tw.When the scope of the shake that is allowed by system was 8%, the scope of the cool and add temperature-sensitive ingredients Tcl of final pulse was that 0.5Tw is to 2.0Tw.Here, minimum Tcl depends on the scope of the shake that is allowed by system, and maximum Tcl depends on the length of the minimum mark that is recorded.
Based on said structure, will according to an aspect of the present invention method for recording data be described with reference to Figure 12.
Figure 12 is the process flow diagram that is used to explain according to the method for recording data of the embodiment of the invention.
With reference to Figure 12, the equipment of record data receives data from the outside, the data that modulation receives, and create NRZI data (operation 901).Next, the wave recording with the logging mode that has multipulse sequence and erasing mode is produced to be used for high-speed record and to improve mark edge characteristic (operation 902).Here, the low level of Writing power of the present invention is higher than bias power level.Then, use the wave recording that produces in CD, to form mark or interval (operation 903).
Wave recording is described about signal type 7T and 3T here.Yet those skilled in the art can easily produce mark and logging mode and the erasing mode at interval that is used to form with respect to 2T, 4-6T and the maximum T of 8-.
In addition, when formation has the mark of multipulse sequence of N * Tw of logging mode (wherein N is a natural number), can be used to form the recording method that its length is the mark of T by the recording impulse that embodiments of the invention not only is applied to wherein (N-1) * Tw, and be applied to be used to form the recording method that its length is the mark of T such as the wherein recording impulse of (N-2) * Tw of DVD-RAM, improve recording.
Though shown and described some embodiments of the present invention, it should be appreciated by those skilled in the art that under the situation that does not break away from principle of the present invention and scope, can make amendment to embodiment, scope of the present invention is limited by claim and equivalent thereof.
The utilizability of industry
As mentioned above, according to the present invention, when record data, be used for the low electricity of the Writing power of logging mode Put down and be set to be higher than bias power level. Therefore, even when data are recorded with high speed, recording layer Also can absorb enough heats, effectively improve thus the edge characteristic of the mark that is recorded.
In addition, according to the present invention, because mark is by being applied to the shape of erasing power level with pulse Dish is recorded, so prevented the shape distortion of the front and rear of mark, improves thus recoding/reproduction Characteristic.
In the present invention, the height of erase power and low level duration are with respect to timing window Tw quilt Be controlled in the 0.25-2.0Tw scope, and the height of the erase power of the thermal characteristics of selecting to be suitable for coiling and Data are recorded on the dish in the time of the low level duration, improve thus recording/reproducing characteristic.
In addition, equal respectively 2.0Tw when record multipulse sequence and the time cycle of wiping multipulse sequence The time, the amount of incident light that can be by the increase dish and need not increase Writing power and erase power forms quality Mark improves recording/reproducing characteristic thus.
In addition, the duration of the final pulse by suitable wave recording is set and wave recording is many The ratio of the duration of pulse train can obtain suitable jittering characteristic, therefore improves the recoding/reproduction spy The property.
In addition, the cool and add temperature-sensitive ingredients of the final pulse by reducing the wave recording in preset range, Can obtain the optimal jitter characteristic, improve thus recording/reproducing characteristic.
Claims (15)
1, a kind of data are recorded in method on the optical record medium, this method comprises:
Generation has the wave recording of the logging mode that is used for high-speed record; With
The wave recording that use to produce forms mark with first rank of data and the second level of data is formed at interval,
Wherein, logging mode is formed by the record multipulse sequence that comprises first pulse, multipulse sequence and final pulse, wherein, the power level of described record multipulse sequence equals high or low Writing power level, and low Writing power level is higher than the bias power level of the final pulse that writes down multipulse sequence, and the ratio of the duration of final pulse and the duration of multipulse sequence is determined according to the scope of the shake that is allowed by system.
2, the power that the method for claim 1, wherein is used for the erasing mode of data erase has predetermined DC level.
3, a kind of data are recorded in method on the optical record medium, this method comprises:
Generation has the logging mode that has multipulse sequence that is used for high-speed record and the wave recording of erasing mode; With
The wave recording that use to produce forms mark with first rank of data and the second level of data is formed at interval,
Wherein, logging mode is made up of the record multipulse sequence that comprises first pulse, multipulse sequence and final pulse, wherein, the power level of record multipulse sequence equals high or low Writing power level, and low Writing power level is higher than the bias power level of the final pulse that writes down multipulse sequence, and the ratio of the duration of final pulse and the duration of multipulse sequence is determined according to the scope of the shake that is allowed by system.
4, method as claimed in claim 3, wherein, the time cycle of record multipulse sequence is controlled in the 0.25Tw-2.0Tw scope with respect to timing window Tw.
5, method as claimed in claim 4, wherein, the time cycle of record multipulse sequence equals 1.0Tw.
6, method as claimed in claim 4, wherein, the time cycle of record multipulse sequence equals 2.0Tw.
7, method as claimed in claim 3, wherein, the power level that constitutes the multipulse sequence of erasing mode periodically changes between at least two level, and described at least two level are high erasing power level Ppe and low erasing power level Pbe.
8, method as claimed in claim 3, wherein, the minimum cool and add temperature-sensitive ingredients of final pulse depends on the scope of the shake that is allowed by system, and the maximum cool and add temperature-sensitive ingredients of final pulse depends on the length of the minimum mark that is recorded.
9, method as claimed in claim 8, wherein, the cool and add temperature-sensitive ingredients of the final pulse of logging mode is set to the length of the minimum mark that is recorded.
10, method as claimed in claim 3 also comprises about the Writing power information at the wave recording of the generation of the specific region of recording layer.
11, a kind of being used for is recorded in equipment on the optical record medium with data, and this equipment comprises:
Wave recording produces circuit, is used to produce the wave recording of the logging mode with the high-speed record that is used for data; With
Pickup unit is used for forming mark on the optical record medium or at interval with record data according to the wave recording that produces by light shining,
Wherein, logging mode is formed by the recording impulse sequence that comprises first pulse, multipulse sequence and final pulse, wherein, the power level of described recording impulse sequence equals high or low power level, and low Writing power level is higher than the bias power level of the final pulse of this record multipulse sequence, and the ratio of the duration of final pulse and the duration of multipulse sequence is determined according to the scope of the shake that is allowed by system.
12, equipment as claimed in claim 11, wherein, wave recording also comprises by the erasing mode that multipulse sequence forms of wiping that is used for data erase, and this is wiped multipulse sequence and has high erasing power level and low erasing power level, and the predetermined DC level of the erase power that low erasing power level Pbe is set to equal general, perhaps high erasing power level Ppe is set to equal this predetermined DC level, maybe should be set between high erasing power level Ppe and the low erasing power level Pbe by predetermined DC level.
13, equipment as claimed in claim 12, wherein, the minimum cool and add temperature-sensitive ingredients of final pulse depends on the scope of the shake that is allowed by system, and the maximum cool and add temperature-sensitive ingredients of final pulse depends on the length of the minimum mark that is recorded.
14, equipment as claimed in claim 13, wherein, the cool and add temperature-sensitive ingredients of the final pulse of logging mode is set to the length of the minimum mark that is recorded.
15, equipment as claimed in claim 11, wherein, the power that is used for the erasing mode of data erase has predetermined DC level.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020030004547 | 2003-01-23 | ||
| KR20030004547 | 2003-01-23 | ||
| KR1020030038520 | 2003-06-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1742324A CN1742324A (en) | 2006-03-01 |
| CN100444251C true CN100444251C (en) | 2008-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003801091239A Expired - Fee Related CN100444251C (en) | 2003-01-23 | 2003-12-30 | Optical recording medium, method and apparatus for recording data thereon |
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| Country | Link |
|---|---|
| KR (1) | KR20040067778A (en) |
| CN (1) | CN100444251C (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1173941A (en) * | 1995-10-09 | 1998-02-18 | 松下电器产业株式会社 | Method and unit for recording optical information |
| JP2000123367A (en) * | 1998-10-14 | 2000-04-28 | Toshiba Corp | Recording method for phase transition type optical recording medium and recorder |
| JP2001143265A (en) * | 1998-07-23 | 2001-05-25 | Samsung Electronics Co Ltd | Adaptive recording method for high density optical recording device and circuit for it |
| CN1335982A (en) * | 1999-07-15 | 2002-02-13 | 皇家菲利浦电子有限公司 | Methods and devices for recording marks in an information layer of an optical record carrier, and record carriers for use therein |
-
2003
- 2003-06-14 KR KR1020030038520A patent/KR20040067778A/en not_active Application Discontinuation
- 2003-12-30 CN CNB2003801091239A patent/CN100444251C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1173941A (en) * | 1995-10-09 | 1998-02-18 | 松下电器产业株式会社 | Method and unit for recording optical information |
| JP2001143265A (en) * | 1998-07-23 | 2001-05-25 | Samsung Electronics Co Ltd | Adaptive recording method for high density optical recording device and circuit for it |
| JP2002237037A (en) * | 1998-07-23 | 2002-08-23 | Samsung Electronics Co Ltd | Adaptive writing method for high-density optical recording apparatus |
| JP2000123367A (en) * | 1998-10-14 | 2000-04-28 | Toshiba Corp | Recording method for phase transition type optical recording medium and recorder |
| US6396792B1 (en) * | 1998-10-14 | 2002-05-28 | Kabushiki Kaisha Toshiba | Recording method of a phase change optical recording medium and recording apparatus |
| CN1335982A (en) * | 1999-07-15 | 2002-02-13 | 皇家菲利浦电子有限公司 | Methods and devices for recording marks in an information layer of an optical record carrier, and record carriers for use therein |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20040067778A (en) | 2004-07-30 |
| CN1742324A (en) | 2006-03-01 |
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