CN101042895B

CN101042895B - Method for recording data on a recording medium and replaying the data, and apparatus thereof

Info

Publication number: CN101042895B
Application number: CN2007100057993A
Authority: CN
Inventors: 金进镛; 徐相运
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2003-07-07
Filing date: 2004-06-29
Publication date: 2011-12-21
Anticipated expiration: 2024-06-29
Also published as: CN101042895A; KR100976472B1; KR20050005915A; CN1701365A; CN101025943B; CN101025943A; CN1701365B

Abstract

A method of recording disc control information in a recordable optical disc including at least one recording layer is provided. Writing speed information and per writing speed write strategy are included in disc control information. The specified disc control information can be uniformly applied to efficiently cope with the record/playback of the optical disc. In configuring disc control information within a management area of an optical disc, the method includes recording a plurality of recording speed informations and a plurality of write strategies respectively associated with corresponding recording speeds within the disc control information wherein one of the recording speed informations is a basic recoding speed information.

Description

At the recording medium identifying recording layer with from its method of reproducing data and device thereof

The application enters the China national stage on March 10th, 2005, the application number of submitting on June 29th, 2004 be PCT/KR2004/001574, denomination of invention divides an application for the patented claim of " recording medium, the method that disposes its control information, the method for using its record and/or reproduction and device thereof ".

Technical field

The present invention relates to a kind of on such as the recording medium of CD-R with at least one recording layer the method for record controls information, especially relate to and a kind of speed information and write strategy parameters be included in method in this dish control information.In addition, the present invention relates to this writing speed information of a kind of use toward or from this recording medium the record or method of reproducing data.

Background technology

The highdensity optical recording media that is called as HD-DVD is widely used in writing down and store high-definition video data, a large amount of routine data and high quality audio data etc.Blu-ray disc is represented follow-on HD-DVD technology.

Now formulate the technical manual of the global standardsization that are used for this Blu-ray disc, comprising the standard that is used for one-time write Blu-ray disc (BD-WO).Simultaneously, the 1x speed BD-RE that is called as and discussing in the middle of rewritten Blu-ray disc should have higher writing speed with expectation, that is, and the BD-RE of the BD-RE of 2x and above speed coil the compatibility.The BD-WO standard that is used for high writing speed is well afoot also.Need to be used to handle the effective solution of the high writing speed of high density compact disc urgently, and the standard of formulating should be guaranteed mutual compatibility.

Summary of the invention

Therefore, the present invention proposes a kind of CD control information recording method, it has been eliminated basically because the limitation and the caused one or more problems of shortcoming of correlation technique.

An object of the present invention is to provide and a kind of the dish control information is recorded as method corresponding to the appointed information of a plurality of writing speeds, pass through the method, speed information is included in this dish control information, makes the record of CD and reproduction to carry out based on prerecorded dish information.

Another object of the present invention provides a kind of data structure that is used for the control information of configuration dish.

Another object of the present invention provides a kind of method that writes down corresponding to the dish control information of a plurality of writing speeds in the specific zone of CD, pass through the method, the information of specific writing speed that is used for each recording layer is by with specific journal, similarly to provide mutual compatibility between the dish.

Another object of the present invention provides a kind of record and reproducting method and device thereof, can use prerecorded dish control information toward video disc recording with from the optical disc replay user data by it.

To partly set forth attendant advantages of the present invention, purpose and characteristics in the following description, consult following explanation or can learn from the practice of the present invention, attendant advantages of the present invention, purpose and characteristics will become apparent for the those skilled in the art of this area.Structure by especially pointing out in the instructions of book and claim thereof and appended accompanying drawing can realize and obtain purpose of the present invention and other advantage.

In order to realize that these purposes and other advantage are with consistent with purpose of the present invention, such as herein embodiment and describing widely, a kind ofly comprise speed information according to data structure of the present invention, this speed information comprises: the first information of expression dominant record speed, second information of expression smallest record speed, the 4th information of the 3rd information that is different from maximum or smallest record speed that expression is predetermined and expression master record speed.

In another aspect of the present invention, in the directorial area of CD in the process of configuration dish control information, a kind of method of dish control information of recording disk comprises step: record a plurality of speed information and relevant with corresponding writing speed respectively a plurality of write-in policies in this dish control information, wherein in this speed information is the master record velocity information.

In another aspect of the present invention, a kind of method at the optical recording media identifying recording layer comprises step: speed information on the specific region of this optical recording media, wherein this velocity information comprises: the first information of expression dominant record speed, second information of expression smallest record speed, the 4th information of the 3rd information that is different from maximum or smallest record speed that expression is predetermined and expression master record speed.

In another aspect of the present invention, a kind of toward/comprise step from optical recording medium/method of reproducing data: reading speed information from the specific region of this optical recording media, wherein this velocity information comprises the 3rd information that is different from maximum or smallest record speed that second information, the expression of the first information, expression smallest record speed of expression dominant record speed is predetermined and the 4th information of expression master record speed; And according to this velocity information that reads, at the main data area of optical recording media identifying recording layer.

In another aspect of the present invention, a kind of recording medium with speed information, it is characterized in that this speed information comprises: the first information of expression dominant record speed, second information of expression smallest record speed, the 4th information of the 3rd information that is different from maximum or smallest record speed that expression is predetermined and expression master record speed.

In another aspect of the present invention, a kind of CD that comprises at least one recording layer, this at least one recording layer has recordable zone and can not write down or prerecorded zone, its mid-game control information is recorded in respectively in the prerecorded zone of each recording layer, wherein a plurality of speed information be recorded in this dish control information with the relevant write-in policy of a plurality of and corresponding writing speed and wherein in this speed information be the master record velocity information.

In another aspect of the present invention, a kind of compact disk recording method comprises step: be loaded if having the CD of at least one recording layer, then read the dish control information in the directorial area that writes on this CD, with read and store a plurality of speed information and be recorded in the presumptive area of this dish control information each be fit to the write-in policy of corresponding writing speed respectively, by velocity information and write-in policy with reference to a plurality of storages, determine to be applied to the writing speed and the writing speed executive logging of each part of CD to determine.

In another aspect of the present invention, a kind of optical disc recording/reproduction device comprises: transmit the control module of record order and the record reproducing unit of this record order of reception, this record reproducing unit is with the mode executive logging of the dish control information of writing down in the management area that reads in CD, by reading the dominant record velocity information, the smallest record velocity information, the master record velocity information, at least being different from the predetermined speed information of maximum or smallest record velocity information and the write-in policy of suitable corresponding writing speed is identified for carrying out the writing speed of this record order and uses the write-in policy that is fit to this writing speed of determining to come executive logging on the specific region.

Should be understood that top general introduction and following detailed description of the present invention are exemplary and illustrative, and be used to provide the present invention for required protection further instruction.

Description of drawings

Included accompanying drawing is used for the invention provides further understanding, and this accompanying drawing is merged and constitute the application's ingredient, is used to illustrate embodiments of the invention, and is used for explaining principle of the present invention in conjunction with explanation.

In the accompanying drawings:

Fig. 1 is the synoptic diagram of the present invention's single-layered disk applicatory;

Fig. 2 is the synoptic diagram of the present invention's dual layer discs applicatory;

Fig. 3 is the synoptic diagram of the directorial area of record dish control information of the present invention, wherein the schematically illustrated dish recording of information form that is somebody's turn to do in corresponding zone;

Fig. 4 A to 4C is according to a first embodiment of the invention and the synoptic diagram of the dish information of record;

Fig. 5 A and 5B are the synoptic diagram of disc recording method according to a first embodiment of the invention;

Fig. 6 A to 6C is the synoptic diagram of the dish information that writes down according to second embodiment of the present invention;

Fig. 7 A to 7D is the synoptic diagram of the dish information that writes down according to the 3rd embodiment of the present invention; With

Fig. 8 is that a use is according to the video disc recording of dish control information of the present invention and the block scheme of transcriber.

Embodiment

To at length introduce the preferred embodiments of the present invention now, the accompanying drawing illustrated that its example will followed.As possible, run through the identical reference number of this accompanying drawing and will be used to represent identical or similar part.

Blu-ray disc is used as an example according to CD of the present invention.But notion of the present invention is characterised in that the CD that has the dish control information of record thereon is applicable to DVD-RAM, DVD-RW, DVD+RW, DVD-R, DVD+R and of this sort dish.Though most of term of Shi Yonging is known herein, some term is selected by the applicant, so the present invention should understand with the term implication of being used by the applicant of wanting.For example, " the dish control information " of dish is recorded in the zone of appointment, that is, but the posting field of dish or the (zone that is called as a protrusion sometimes, prerecorded zone, wherein write down manufacturer data and can not write down again), and comprise the information that the playback of recorded dish is required.The dish control information is known as " dish information " or " DI " for blu-ray disc technology, but typically is called as " physical format information " for DVD-RAM, DVD-RW, DVD+RW, DVD-R and DVD+R dish.Therefore, should be clearly, technical background of the present invention is comparably applicable to physical format information.In addition, be registered as not specially appointed message unit according to dish information of the present invention, for example, it can be counted first or second information.

Fig. 1 and 2 illustrates the structure according to CD of the present invention, and wherein all recordable CDs can be applicable to the present invention.This recordable dish for example can be rewritable CD or Write once optical disc.

With reference to figure 1, illustrate CD with a recording layer, a Lead-In Area as directorial area is provided on the inside circumference of CD, but a leading-out zone as directorial area is provided on the outer circumference of CD.In inner circumference area, a prerecorded area is provided respectively and can have rewritten (perhaps one-time write) zone.In BD-RE and BD-WO technology, this prerecorded zone is known as the PIC zone, has write down permanent information and control data here, and dish information is recorded in this PIC zone.The data that this inboard and spare area, outside ISA and OSA are used to replace defect area are formed by the user data area of user data and inboard and spare area, outside ISA and OSA in the data field.Under the situation of BD-WO dish, temporary defect management area territory (TDMA) is provided, be used for record defect information and be used for general management.Under the situation of BD-RE dish, this TDMA is unnecessary, and this BD-RE dish has the respective regions of being appointed as the reserved area.

This invention is intended to provide a kind of in prerecorded or recordable zone record as being used to write down and/or the method for the dish information (DI) of needed dish control information is coiled in reproduction.Clearly, the recording method in the zone of writing down is in advance differently put on the dish of each type.Under the situation of BD-RE and BD-WO dish, this prerecorded zone is to use the biphased high frequency modulated signals of reproducing according to specific playback method to obtain the PIC zone that this dish information is write down.

Fig. 2 illustrates a CD with dual logging layer, and wherein the inner circumference area of this dish has the Lead-In Area of first recording layer (layer 0) corresponding to the leading-out zone of second recording layer (layer 1).In this case, in each importing and export area, provide a PIC zone, and identical dish information is recorded in each PIC zone.

Fig. 3 illustrates the PIC zone according to form of the present invention.When the dish information in the PIC zone that disposes BD-RE or BD-WO dish, minimum record unit is one bunch, and 544 bunches constitute the segmentation as a higher record unit, and 5 segmentations constitute this PIC zone.Dish information is recorded in first bunch of the first segmentation IFO.This dish information is by each recording layer record repeatedly, and writing speed is permitted by corresponding CD.A dish information comprises 11 2 bytes, is sometimes referred to as the DI frame.In order to tackle dish information dropout, the identical content of this dish information is repeatedly recorded in each first bunch of this all the other segmentations.

Represent corresponding recording layer information, represent the information of writing speed and be included in each dish information corresponding to the write-in policy information of this writing speed.Above-mentioned information is used in record and reproduction CD process, to provide best recording power to each recording layer and each writing speed.

Dish information of the present invention is characterised in that provides the specific speed information of being supported by dish and relevant write-in policy information, more particularly, the specific writing speed that provides each recording layer and relevant write-in policy information to support is provided via for the dish appointed method with a plurality of recording layers.

The ad hoc structure of this dish information is to be used for Blu-ray disc, and it can be different from the structure based on the DVD dish.Particularly, the record DI capacity that is used for Blu-ray disc is 112 bytes or is equal to.By the dish information specifies with identical recording layer is an information,, does not repeat all identical information that is, and the write-in policy structure is different because of each writing speed.

Except the method for the special parameter that writes down this write-in policy, the media property of CD revises for its recording layer by apply laser beam via pick-up usually with executive logging.In order to do like this, should determine the signal intensity (recording power) and the duration of laser beam.The above-mentioned information relevant with record is commonly called write-in policy (WS) parameter that is used to realize specific " write-in policy ".

Fig. 4 A-4C and 5A and 5B illustrate first embodiment of indicator control information of the present invention, wherein tackle different writing speed at a high speed and are divided into a writing speed group that will write down.

First embodiment of the present invention relates to the method that tackles disc information at a high speed, in the method for CD identifying recording layer etc., especially, relate to a kind of in Constant Angular Velocity (CAV) system that tackles applicable to high-speed disc beneficial method.But the present invention is not restricted to the CAV system.

In this CAV system, dish is by with constant speed rotation, make the inboard of this dish and outer circumference each have corresponding to the rotational speed that is suitable for radius length.For Blu-ray disc, the speed of outer circumference than inside circumference larger about 2.4 times.Therefore, for example, if use the record on inside circumference of CAV system to carry out with 1x speed or 4x speed, this outer circumference record must be carried out with about 2.4x speed or 9.6x speed respectively, on the contrary, the 6x speed record refers to inside circumference record and must carry out with about 2.5x speed on outer circumference.In other words, adopt the CAV system therefore must be used to write down optimal velocity for recording and write-in policy with different speed between inboard of coiling and outer circumference according to dish choice of location applicatory.In addition, above-mentioned information should be used as the dish information of appointment and provide, to utilize this best writing speed and write-in policy (WS) in corresponding system.

Fig. 4 A illustrates one according to the embodiment by CD controlling recording dish information of the present invention, and its mid-game message structure is exemplarily illustrated.With reference to figure 4A, each dish information is determined by sequence number in proper order, and is used a byte records.For example, this information is recorded in the 5th byte of this dish information (promptly, " the DI number of frames in the DI module ", it can be expressed as 00h, 01h, 02h, 03h, 04h, 05h, 06h or 07h) in, the 00h of the 5th byte or 07h represent first or the 8th dish information respectively here.In other words, the byte (for example, the 5th byte) of determining this dish information order may be defined as and not only is illustrated in the order in the specific recording layer but also represents writing speed applicatory.For example, " 00h " refers to the 1x speed disc information of first recording layer, and " 01h " refers to the 1x speed disc information of second recording layer etc.

In addition, in the specific region in dish information, be written in the ad-hoc location of previous agreement by corresponding dish information and the speed information that tackles write-in policy (WS) appointment of corresponding writing speed.For example, coil the recording of information velocity information accordingly and be written in the byte of N～(N+4), and this write-in policy (WS) that tackles corresponding writing speed is written in M～111 bytes.

Particularly, the dish that the tackles high writing speed information that provides is provided, this speed information and write-in policy (WS) by for a plurality of speed information each and write, that is, optimal velocity for recording Vnom, dominant record speed Vmax, smallest record speed Vmin and intermediate record speed Vint.

On optimal velocity for recording, this master record velocity information is written into, and master record speed begins with 2x speed in high-speed disc usually.When writing speed applicatory improved, this master record speed also and then improved.On dominant record speed, and be written into by the relevant information of corresponding dish dominant record speed applicatory.On smallest record speed, with the relevant information of the writing speed that obtains is written into divided by " 2.4 " by corresponding dish dominant record speed applicatory.On intermediate record speed, and be written into by smallest record speed being multiply by the relevant information of writing speed that " 1.7 " obtain.For convenience of explanation, by considering to determine the relation of the writing speed value of maximum, minimum and intermediate record speed applicable to the inboard of BD of the present invention and the radius ratio between the outer circumference.Clearly, above-mentioned relation can be applied to the dish of other types changeably, and this writing speed value can be set to different values according to the dish feature, and no matter be identical BD.

About optimal velocity for recording (2x speed), its information preferably is recorded in each dish information.Preferably, this maximum, minimum and intermediate record speed are by differently definite according to being come by corresponding dish information dominant record velocity amplitude applicatory.

In addition, can repeat to create intermediate record speed.The invention is characterized in and have at least one intermediate record speed.Therefore, in a dish information, comprise at least four speed information.Have many more speed information, then it is useful more for system operation.Therefore, but by utilize the posting field in the dish information maximumly, preferably provide a lot of intermediate record velocity informations to it.

Fig. 4 B illustrates the specific recording method that is used to write down the dish information with a plurality of speed information according to similar Fig. 4 A of the present invention, its mid-game information is written into, keep simultaneously with discussing among the compatibility of 1x speed BD-RE dish information, and wherein for example have an intermediate record velocity information.

The writing speed of three kinds is written in according to predetermined definition in the 32nd～35 byte in the dish information such as optimal velocity for recording (Vnom), dominant record speed (Vmax) and smallest record speed (Vmin).Writing power information as each write-in policy (WS) of the writing speed that is used for these three kinds is recorded in the 48th～71 byte.Each start time of write pulse of another write-in policy (WS) as the writing speed that tackles these three kinds is recorded in the 76th～84 byte.Each start time of erasing pulse of another write-in policy (WS) as the writing speed that tackles these three kinds is recorded in the 89th～97 byte.

Except writing speed Vnom, the Vmax and Vmin of three basic kinds, the present invention has further write down at least one and the relevant information of this intermediate record speed Vint, and it is used the interior reserved area of dish information and record.For example, this intermediate record speed by according to predetermined definition record in the 19th byte, Writing power information as the write-in policy that tackles intermediate record speed is recorded in 8 bytes of total of the 20th～23 byte and the 44th～47 byte, be recorded in the 99th～101 byte and be recorded in the 102nd～104 byte as start time of the erasing pulse of another write-in policy (WS) of handling intermediate record speed as start time of the write pulse of another write-in policy (WS) that tackles intermediate record speed.

Described as described above, if wish a plurality of intermediate record speed of record, the information relevant with another intermediate record speed can be recorded in the reserved area in the dish information equally.

Fig. 4 C is shown schematically under the situation of this dish information of record of Fig. 4 A, especially, and the dish information that under the situation of bilayer, writes down with two recording layers.Identical principle can be applied to have the individual layer of a recording layer.

For example, when each recording layer of CD needs three different speed information, need be corresponding to six dish information of each writing speed.Each dish information distribution and in predetermined zone records series number, record corresponding to the velocity information and the write-in policy (WS) of sequence number.

For example, if writing speed is represented as 1x speed, 2x speed and 6x speed, then first, second refers to the dish information that is used for this first recording layer with the 3rd dish information.The first dish information is the 1x speed disc information of first recording layer, and has sequence number " 00h ".Corresponding writing speed and write-in policy are recorded in the position of previous agreement, and this speed information is recorded in the byte of n～(N+4) thus, and this write-in policy is recorded in M～111 bytes.

The second dish information is the 2x speed disc information of first recording layer, and has sequence number " 01h ".Corresponding writing speed and write-in policy are recorded in the position of previous agreement by the similar first dish information.The 3rd dish information is the 6x speed disc information of first recording layer, and has sequence number " 02h ".Corresponding writing speed and write-in policy are recorded in the position of previous agreement by the similar first or second dish information.

Simultaneously, the 4th to the 6th dish information refers to the dish information that is used for second recording layer.The 4th dish information is the 1x speed disc information of second recording layer, and has sequence number " 03h ".The 5th dish information is the 2x speed disc information of second recording layer, and has sequence number " 04h ".The 6th dish information is the 6x speed disc information of second recording layer, and has sequence number " 05h ".Each corresponding writing speed of the 4th to the 6th dish information is recorded in the identical position with write-in policy.

At first embodiment of the present invention shown in Fig. 4 A to 4C is by adopting the write-in policy (WS) that writes down a plurality of speed information and each writing speed in a dish information to describe for example.In case of necessity, a write-in policy (WS) relevant with specific speed information can be recorded in the dish information, and remaining is recorded in another dish information.

For example, under the situation of the speed information of four kinds of needs, the dish information that needs is Duoed more than four times than the dish information of the above-described embodiment of the present invention.But as shown in Figure 3, this PIC zone is a zone of enough writing down 112 many byte dish information therein, therefore can write down a large amount of dish information therein fully in case of necessity.Therefore, if a write-in policy (WS) is recorded in this dish information, be useful then distributing more zone to be used for writing down therein intermediate record speed.

On the contrary, the information that writes down in each dish information usually before might writing down is as common information, and only each writing speed write-in policy is write down in change.

Fig. 5 A and 5B are the synoptic diagram according to the recording method of executive logging on CD of first embodiment of the invention.Fig. 5 A relates to the example that the situation of using an intermediate record speed and Fig. 5 B illustrate at least two intermediate record speed of a use.

That is, in case CD is loaded into optical recording/playback unit, relevant with intermediate record speed (Vint) with dominant record speed (Vmax), smallest record speed (Vmin) respectively write-in policy is used as the dish control information and reads in this CD.But the posting field between inside circumference and outer circumference is divided into three parts in fact.Dominant record speed (Vmax), smallest record speed (Vmin) and intermediate record speed (Vint) are applicable to outer circumference zone, zone line and inner circumference area respectively, with executive logging in the above.This expression record is to carry out for specific zone by applying suitable writing speed with the write-in policy (WS) relevant with corresponding writing speed, and here this record will be performed, to adjust Writing power, write pulse timing etc.

For example, if by the dish dominant record speed applicatory be 6x speed, then relevant with 6x speed dish information is read out.In dominant record speed (Vmax) is under the situation of 6x speed, is used for the 2.5x speed (Vmax/2.4) of smallest record speed and the write-in policy that is used for the 4.25x speed (1.7Vmin) of intermediate record speed and is used for corresponding writing speed is recorded in this dish information.The previous affirmation of record/playback unit will put on the writing speed and the write-in policy (WS) in specific zone, in this specific zone with executive logging, thereby make in the process of executive logging on corresponding zone and can promptly tackle this write-in policy (WS), and use this optimal velocity for recording to reduce the wrong probability that occurs.

Fig. 5 B is shown schematically in a plurality of intermediate record speed and is recorded under the situation in the dish information method of executive logging on CD.But the posting field of CD is divided into the as many a plurality of parts of a plurality of writing speeds except that Vnom and in dish information in fact.Dominant record speed (Vmax) and smallest record speed (Vmin) are put on outer circumference zone and inner circumference area respectively, with executive logging in the above.The zone line of this dish is divided into and is provided with the as many zone of number of intermediate record speed, to apply this intermediate record speed Vint-1～Vint-n to this place respectively.Therefore, corresponding record is carried out on the zone of this division.Therefore, the optimal velocity for recording of appropriate section is determined, and this record is used corresponding to the write-in policy of determining (WS) of each corresponding definite writing speed and realizes thus.

Fig. 6 A to 6C illustrates second embodiment of indicator control information of the present invention, wherein represents corresponding writing speed and is recorded in each dish information corresponding to the speed information of the write-in policy of this writing speed, to tackle at a high speed.

Fig. 6 A illustrates an example according to the video disc recording dish information of the 3rd embodiment of the present invention, and its mid-game message structure is schematically illustrated.

With reference to figure 6A, each dish sequence of information is determined by sequence number, and corresponding order is write by 1 byte.For example, corresponding information is recorded in the 5th byte in this dish information, and it is known as " the DI number of frames in the DI module " field, and briefly by " 00h, 01h, 02h ... " expression.That is, the information of the 5th byte is defined in the following manner.At first, if the information of the 5th byte is " 00h ", then " 00h " refers to first dish information." 07h " refers to the 8th dish information.

In the specific region in this dish information, represent by the certain bits that will write down in the previous ad-hoc location of arranging in this dish information by each speed information that dish allows.For example, if each recording layer of corresponding dish needs four different speed information, distribute 4 positions then for each writing speed, the speed information that the speed information that is used for first recording layer (layer 0) is recorded in N and (N+1) byte in this dish information and is used for second recording layer (layer 1) is recorded in M and (M+1) byte in this dish information.If this dish has individual layer, then M and (M+1) byte are set to " zero " value.The different speed information of at least four kinds is used by other the distribution such as the byte of n byte, (N+1) byte, (N+2) byte etc. if desired.Therefore, be recorded in the certain location of previous agreement corresponding to the writing speed of its sequence number, as shown in Figure 6A, it is convenient to confirm the speed information that had by corresponding dish information thus.In addition, remaining byte, for example, the 44th～111 byte is used at length writing down Writing power, writing parameter etc.

Fig. 6 B is shown schematically in the dish information that writes down under the situation of expression speed information of similar Fig. 6 A, especially, and under the situation of individual layer.If CD needs the different speed information of four kinds, then need four dish information corresponding to each writing speed.Each of dish information is by distributing 4 positions to write down for the writing speed corresponding to this sequence number for sequence number and 4 positions.For example, if writing speed is expressed as 1x speed respectively, 2x speed, 4x speed and 8x speed, then the first dish information has a sequence number corresponding to " 00h ", represent corresponding writing speed with " 0001b " by expression 1x speed, the second dish information has a sequence number corresponding to " 01h ", represent corresponding writing speed with " 0010b " by expression 2x speed, the 3rd dish information has a sequence number corresponding to " 02h ", represent corresponding writing speed with " 0100b " by expression 4x speed, have a sequence number with the 4th dish information, represent corresponding writing speed with " 1000b " by expression 8x speed corresponding to " 03h ".When doing like this, each writing speed is represented by binary message.Therefore, if each distributes 4 positions, then maximum allowable writing speed (by " 1111b " expression) will be a 15x speed.If maximum allowable writing speed is greater than 16x speed, then each should distribute 5 positions at least.

Owing to shown in Fig. 6 B be individual layer, to be used as untapped information setting to be processed be " zero " so expression is used for the M of speed information of second recording layer (layer 1) and (M+1) byte.

Fig. 6 C is shown schematically in the dish information that writes down under the situation of expression speed information of similar Fig. 6 A, especially, and under the situation of bilayer.If CD need amount to the different speed information of four kinds, then need to amount to eight dish information corresponding to each writing speed.Each of dish information is by distributing 4 positions to write down for the writing speed corresponding to this sequence number for sequence number and 4 positions.For example, if writing speed is expressed as 1x speed respectively, 2x speed, 4x speed and 8x speed, then the first dish information has a sequence number corresponding to " 00h ", represent corresponding writing speed with " 0001b " by expression 1x speed, the second dish information has a sequence number corresponding to " 01h ", represent corresponding writing speed with " 0010b " by expression 2x speed, the 3rd dish information has a sequence number corresponding to " 02h ", represent corresponding writing speed with " 0100b " by expression 4x speed, have a sequence number with the 4th dish information, represent corresponding writing speed with " 1000b " by expression 8x speed corresponding to " 03h ".First to fourth dish information is the information that is used for first recording layer (layer 0), and is recorded among the n and (N+1) byte of dish information, and the binary message of 4 positions is represented each writing speed.Similarly, can represent to be used for the speed information of second recording layer in the same way, it is recorded in M and (M+1) byte.Promptly, the 5th dish information has a sequence number corresponding to " 04h ", represent corresponding writing speed with " 0001b " by expression 1x speed, the 6th dish information has a sequence number corresponding to " 05h ", represent corresponding writing speed with " 0010b " by expression 2x speed, the 7th dish information has a sequence number corresponding to " 06h ", represent corresponding writing speed with " 0100b " by expression 4x speed, have a sequence number with the 8th dish information, represent corresponding writing speed with " 1000b " by expression 8x speed corresponding to " 07h ".

In second embodiment, be fit to each writing speed the write-in policy that is used for Writing power, write parameter etc. and this speed information and be recorded in other zone in this dish information.Therefore, in a dish information, coil accordingly information sequence number, by the speed information of corresponding dish information representation, tackle corresponding writing speed write-in policy (WS) etc. by record respectively.

In addition, aspect the velocity information of this record of expression of similar second embodiment, the 5th byte information is defined as specific writing speed in advance, makes speed information be recorded in n, (N+1), M and (M+1) byte, with to its affirmation.

For example, previous definition is that " 00h " of the 5th byte information refers to " the 1x speed disc information of first recording layer " and " 07h " of the 5th byte information refers to " the 8x speed disc information of second recording layer ".Four positions are assigned to each in n, (N+1), M and (M+1) byte, make that the writing speed value is registered as " 0001b " (1x speed) or " 0100b " (8x speed) accurately.Therefore, reaffirm that corresponding dish information is 1x or 8x speed.

Fig. 7 A to 7D is the synoptic diagram according to the disc information of the 3rd embodiment of the present invention, and speed information wherein applicatory is recorded, to tackle at a high speed.

In order to obtain the dish information relevant with the specific writing speed of the specific recording layer of wanting from a plurality of existing dish information, whole dish information should spend the many time and read.For example, if exist four recording layers and each recording layer that eight writing speeds applicatory are arranged, then amounting to needs 32 dish information.When needs were used for the value of dish information of specific recording layer and writing speed, record/playback unit should be searched for 32 the whole dish information that amount to.Therefore, the invention is characterized in that record " coiling writing speed information applicatory " and " being present in the recording layer information in the dish " in dish information is with by appointed method and use this recorded information to realize coiling information search.

Promptly, should " coiling writing speed information applicatory " and " being present in the recording layer information in the dish " quilt comparably co-registered in each dish information, and a plurality of dish sequences of information use these information to determine, thereby are convenient to obtain dish information relevant with specific recording layer and the writing speed that will search for.

In addition, a write-in policy (WS) is recorded in each dish information and the identifying information that is used to discern the type of corresponding write-in policy (WS) is separated ground record, device for reproducing recorded (Fig. 8) this write-in policy easy to use (WS) thus.In addition, by in dish information, selecting and write down a write-in policy (WS) that is used for specific writing speed and specific recording layer, facilitate for dish manufacturer.

Below by the method for explaining with reference to figure 7A to 7D according to the disc information of the 3rd embodiment of the present invention.

Fig. 7 A illustrates the schematic structure that is used to explain according to the dish information of the disc information method of the 3rd embodiment of the present invention.

With reference to figure 7A, be used to coil sequence of information and determine by sequence number, and by 1 byte records.For example, the information that is recorded in the 5th byte in this dish information is known as " the DI number of frames in the DI module " field, and briefly by " 00h, 01h, 02h ... " expression.

That is, if the information of the 5th byte is " 00h ", then it refers to the first dish information.If the information of the 5th byte is " 07h ", then it refers to the 8th dish information.The meaning of the order of the 5th byte will determine that it will be explained after a while by N and L byte.

Corresponding dish writing speed information applicatory is recorded in the interior specific region (N byte) of dish information, and it is known as " writing speed sign " field.For example, whether the specific writing speed of the writing speed of eight kinds is by 1 bit representation in having the same area of distributing to its 1 byte applicable to corresponding dish.That is, it can be defined as, if a place value is " 0b " in all positions, then corresponding writing speed is not applicable (unsupported), if perhaps this place value is " 1b ", then corresponding writing speed is (support) applicatory.Therefore, each identification information that becomes the expression existence or do not have the applicability of specific writing speed of each the b0～b7 in 1 byte.

For example, if 1x speed is only applicatory by corresponding dish, then " 00000001 " is written in the N byte.If the writing speed of eight all kinds is applicatory, then " 11111111 " are written in this N byte.

In above explanation, the 1x and the 2x velocity contrast that are used by all dishes seldom are predetermined employing.But the writing speed of determining by standard can be used as since other writing speeds of the 3rd writing speed and use.For example, the the the the 3rd, the 4th, the 5th, the 6th, the 7th and the 8th writing speed (the 3rd X, the 4th X, the 5th X, the 6th X, the 7th X, the 8th X) might be set respectively and be 5x, 6x, 8x, 12x, 14x and 16x speed.

Therefore, if corresponding dish allows this writing speed to reach the 4th writing speed, it will be written as " writing speed sign=00001111b ".But,, then do not allow " writing speed sign=00001011b " if corresponding dish does not allow the 3rd writing speed and allows the 4th writing speed.That is, in this " writing speed sign " field, if higher position is set to " 1b ", then corresponding lower position should be set to " 1b ".Therefore, this refers to " 1b " regardless of higher position, and lower position can not be set to " 0b ".Simultaneously, the recording layer information that is illustrated in the recording layer number that exists in the corresponding dish is recorded in interior another the specific zone (L byte) of this dish information, and it is known as " number of recording layer " field.For example, the value that means the recording layer number can be represented by dyadic number in having the same area of distributing to its 1 byte.At this recording layer is under the situation of the individual layer in Fig. 1, and " 00000001 " is written in this L byte.At this recording layer is under the situation of the bilayer in Fig. 2, and " 00000010 " is written in this L byte.Under the situation that has four recording layers, " 00000100 " is written in this L byte.

Because restriction is for the number of the recording layer of current consideration, it is current to be two recording layers, and 4 positions in the L byte are enough to expression and amount to 15 recording layers (under the situation of " 1111 ").In this case, obviously, other effective information can be written in other the zone (4 positions) of this L byte.

In addition, be recorded in the identifying information that is used for discerning write-in policy (WS) type in P～111 bytes and be written into another specific region (M byte) in the dish information, it is known as " write-in policy (WS) type " field.

That is, in dish information of the present invention, a write-in policy (WS) is recorded and is used for specific writing speed, and specific recording layer and write-in policy are optionally chosen from different types of appointment write-in policy type by the dish manufacturer.Therefore, if dish information is first kind write-in policy WS-1 accordingly, " 00000001 " is written in the M byte.If dish information is the second type write-in policy WS-2 accordingly, " 00000010 " is written in the M byte.And actual write-in policy (WS) is recorded in P～111 bytes.But this actual write-in policy (WS) is recorded in the M byte, as with the value of this write-in policy (WS) type interoperability of determining.This write-in policy (WS) type optionally is recorded in all dish information via the M byte.And for also being possible so that compulsory mode applies write-in policy (WS) type of an appointment in 1x speed disc information, its expectation is supported by all device for reproducing recorded (Fig. 8).

And this write-in policy (WS) can be with the whole bag of tricks record.When dish becomes very fine and close and has higher speed, writing speed, that is, the media property of dish RPM and recording layer is obviously influenced.Therefore, need more accurate system.And for example, various write-in policies (WS) are by description below.

At first, have a system that has than the write pulse of the record mark size (n) little " 1 " that forms on the recording layer medium, it can be known as " (n-1) WS ".Secondly, have a system with half the big or small write pulse that adds up to this record mark size (n), it can be known as " n/2 WS ".In addition, the new write-in policy (WS) of exploitation that keeping.Write-in policy (WS) for different types, when having various write-in policies (WS) type, as the parameter that puts on different mutually write-in policies (WS), the dish manufacturer is according to the test of the write-in policy (WS) in the M byte that is recorded in selection Writing power, P～111 byte records in this dish information are somebody's turn to do the result of test then, as write-in policy (WS).

From " writing speed information " and " recording layer information " of L byte of the N byte of above record, this device for reproducing recorded (Fig. 8) is confirmed have how many plates of information in corresponding dish.That is, the quantity of the dish information of existence is to obtain by the number that writing speed number applicatory multiply by recording layer.When the present invention applies a write-in policy (WS) that is used for specific writing speed and specific recording layer, in the process of the quantity of determining dish information, can consider the type and the number of this write-in policy (WS).

More than the information of relevant total dish information content of Que Dinging can be recorded in (not shown in FIG.) in the specific region in this dish information (for example, nybble etc.) equally.

Therefore, a plurality of above dish information of determining of can programming, make this dish sequence of information (being written in the 5th byte) depend on this sequence number, and make each dish information specify previous writing speed and the recording layer of determining in proper order by this as its that in above describing, mention.

For example, if known N byte is " 00001111 " then exist four dish writing speeds applicatory and L byte be " 00000010 " then in this dish two recording layers of existence, need eight dish information altogether, so this order will be " 00h～07h ".And, determine that in advance " 00h ", " 01h ", " 02h ", " 03h ", " 04h ", " 05h ", " 06h " and " 07h " relate separately to 1x speed, first recording layer; 2x speed, second recording layer; 2x speed, first recording layer; 2x speed, second recording layer; The 3rd writing speed, first recording layer; The 3rd writing speed, second recording layer; The 4th writing speed, first recording layer and the 4th writing speed, second recording layer.

In above example of illustrating, this writing speed is paid the utmost attention to.But clearly, this recording layer can be paid the utmost attention to.

Therefore, in order to obtain to be used for the dish information of specific target writing speed and specific target record layer, this device for reproducing recorded (Fig. 8) is convenient to check which dish information is relevant with specific target writing speed and recording layer from " recording layer information " of " the writing speed information " of N byte and L byte, rather than reset and to check that whole dish information, " the writing speed information " of N byte and " recording layer information " of L byte are recorded in separately the dish information usually.

Fig. 7 B illustrates the example of the expansion of a third embodiment of the invention among Fig. 7 A.By the dish writing speed applicatory greater than eight kinds situation under, N byte in Fig. 7 A (" writing speed sign " field) is expanded to there is or does not exist the applicability of the 1st～8 writing speed in expression, and another byte is assigned to show the applicability that exists or do not have the 9th～16 writing speed by the sign in N2 the byte by the sign in N1 the byte (" writing speed sign 1 " field).Write content in other bytes and be equivalent in Fig. 7 A of the 3rd embodiment of the present invention those, thereby skipped in the following description.

Fig. 7 C illustrates the example by the 3rd the embodiment disc information of the present invention among Fig. 7 A.Can there be two (1X, 2X) writing speeds applicatory, and know according to L byte (" 00000010b ") and to have two recording layers in the dish according to knowing in the N byte (" 00000010b ") that is recorded in usually in the whole dish information.

Therefore, in the example of Fig. 7 C, always co-exist in four dish information (two recording layer * two writing speeds), this dish sequence of information become " 00h " (1X, L0) → " 01h " (1X, L1) → " 02h " (2X, L0) → " 03h " (2X, L1).This is the content according to predetermined order appointment, and as what mention in description above, can be changed into different orders according to standard.

Except N and L byte, intrinsic write-in policy (WS) is recorded in other interior bytes of each dish.Particularly, the information that is written in write-in policy (WS) type in P～111 bytes in the corresponding dish information is recorded in the M byte.That is, writing the M byte can be different in each dish information with information in P～111 bytes.

In the example of Fig. 7 C, " 00h " (1X, L0) and " 01h " (1X L1) relates to the application of first kind write-in policy (WS-1), and " 02h " (2X, L0) and " 03h " (2X L1) relates to the application of the second type write-in policy (WS-2).

Fig. 7 D illustrates another example according to the disc information of the 3rd embodiment of the present invention among Fig. 7 A.Can according to be recorded in usually N byte (" 11111111b ") in the whole dish information know exist eight (1X, 2X ..., 16X) writing speed applicatory, and know according to L byte (" 00000100b ") and to have four recording layers.Therefore, in another example of Fig. 7 D, always co-exist in 32 dish information (four recording layer * eight writing speeds), this dish sequence of information becomes " 00h " (1X, L0) → " 01h " (1X, L1) → " 02h " (1X, L2) → " 03h " (1X, L4) → " 04h " (2X, L0) → ... → " 31h " (16X, L4).

Except N and L byte, intrinsic write-in policy (WS) is recorded in other interior bytes of each dish.Particularly, the information that is written in write-in policy (WS) type in P～111 bytes in the corresponding dish information is recorded in the M byte.That is, writing the information of M byte and P～111 bytes can be different in each dish information.

In another example of Fig. 7 D, if record reproducing unit (Fig. 8) is intended to search for the 2x speed (2X with first recording layer, L0) Xiang Guan dish information, to come executive logging by the write-in policy (WS) that applies in the corresponding dish information, can know according to being recorded in N in the whole dish information and the information in the L byte usually, according to this dish sequence of information, such as " 00h " (1X, L0) → " 01h " (1X, L1) → " 02h " (1X, L2) → " 03h " (1X, L4) → " 04h " (2X, L0) → ... (16X L4), always co-exists in 32 dish information (four recording layer * eight writing speeds) to → " 31h " in corresponding dish.

Therefore, this device for reproducing recorded (Fig. 8) can be confirmed the 2x speed (2X with the first searched recording layer, L0) Xiang Guan dish information is " 04h ", and confirm that according to write-in policy (WS) type identification information (" 00000002b ") in the M byte that is recorded in the corresponding information (" 04h ") corresponding dish information (" 04h ") is registered as first kind write-in policy (WS-1), thereby read the parameter value of first kind write-in policy (WS-1) via this P～111 bytes, when writing down, to utilize.

Similarly, if be intended to search for 16x speed (16X with the 4th recording layer, L3) Xiang Guan dish information, to come executive logging by the write-in policy (WS) that applies in the respective disc information, this record reproducing unit (Fig. 8) confirms that via identical process corresponding dish information is " 31h ", and this write-in policy type (WS) is second type (WS-2), thereby can utilize them when record.

Therefore, if main frame or control module (" 20 " among Fig. 8) are intended on specific recording layer with specific writing speed executive logging, then this device for reproducing recorded (Fig. 8) is convenient to search for corresponding dish information, thereby can confirm the write-in policy (WS) that writes down in corresponding dish information.

As a reference, the information of the first and the 3rd embodiment can jointly be recorded in the dish information (DI) or be recorded in respectively in the dish control information (not shown in FIG.) separately.In this case, disclosed velocity information applicatory can have priority ranking in the 3rd embodiment.Whether corresponding specific writing speed is applicatory, this will depend on disclosed information in the 3rd embodiment, because in fact perhaps the part of maximum writing speed, minimum writing speed, nominal writing speed and other writing speed information is not applicatory.

Fig. 8 illustrates video disc recording and the transcriber of a use according to dish control information of the present invention.This record and transcriber comprise and being used for toward the video disc recording data with from the record/playback unit 10 of optical disc replay data be used to control the controller 20 of this record/playback unit 10.This controller 20 produces record or the reproduction command that is used for the specific region, and this record/playback unit 10 is carried out the record/playback function that is used for this specific region in view of the above.This record/playback unit 10 comprises: be used for the interface 12 of communicating by letter with external unit (being controller (perhaps main frame)); Be used for carrying out the pick-up 11 of read and write operation for this CD; The input signal that is used to modulate pick-up with executive logging operation and the output signal that is used for the demodulation pick-up to carry out the data processor 13 that reproduces operation; Be used to control the servomechanism 14 of the read and write operation of this pick-up; Be used for the dish control information that interim storage will write down or read and the storer 15 of user data; Microcomputer 16 with each unit that is used for controlling respectively this record/playback unit.

Industrial applicibility

In above-described system, it also is possible need not that this control module 20 controls the record of these data and/or reproduce.Under the sort of situation, when carrying out the function of this control module 10, this microcomputer 16 can be controlled at all unit in the record/playback unit 10.

According to the present invention in the process of video disc recording data, this video disc recording and transcriber at first read the whole disc management area of the CD of insertion, this information that reads is dish information of the present invention, it is temporarily stored in the storer 15.Therefore, the write-in policy of this recording layer information, speed information and suitable corresponding writing speed is read out and storage temporarily.

Write if want to carry out on the specific region in this CD, then controller 20 becomes write command to such intention, sends its data together with the writing position information that is used for writing down to this record/playback unit 10 then.After receiving this write command, determine to be applicable to the respective record speed of the target record layer in the CD in the management information of this microcomputer 16 from be stored in storer 15, then by using the most appropriate write-in policy to carry out this write command with reference to the writing speed that should determine.

Particularly, by first embodiment of the present invention under the situation of executive logging on the CD, this microcomputer 16 is carried out this record by considering maximum, centre, minimum and other writing speed in the mode that each zone in coiling is applied different writing speeds and write-in policy (WS).

In view of the above, the invention provides the whole bag of tricks of the dish control information that in high density compact disc, tackles higher writing speed, thereby, this standardized dish control information can be suitable for uniformly, to handle the recording/reproducing of this CD effectively.

Apparent for those those skilled in the art, can modifications and variations of the present invention are.Therefore, this invention is intended to cover the modifications and variations of the present invention that it is provided within claims and its equivalent scope.

Claims

1. one kind in optical recording media identifying recording layer/method of reproducing data from recording medium, comprising:

Specific region reading and recording velocity information from this optical recording media, wherein this speed information comprises the first information that is used for first writing speed is expressed as dominant record speed, is used for the 3rd information that second writing speed is expressed as second information of smallest record speed and is used for the 3rd writing speed is expressed as the booking situation speed that is different from this minimum and maximum writing speed; And the 4th information that is used for the 4th writing speed is expressed as one or more master record speed, wherein at least one master record speed must be supported by this optical recording media;

But read whether speed information applicatory of the specific writing speed of expression; And

But according to speed information and speed information, data are recorded on the main data area of this optical recording media/reproduce data from the main data area of this optical recording media.

2. the method for claim 1 further comprises and reads the step of writing policy information, and this is write policy information and represents applicable to the write strategy types at the recording medium identifying recording layer.

3. the method for claim 1 further comprises the step that reads a plurality of writing speed parameters, and these a plurality of writing speed parameters are used for the writing speed record data with separately.

4. method as claimed in claim 2, but wherein should speed information represent each writing speed with bit position.

5. method as claimed in claim 4, be somebody's turn to do speed information but wherein dispose by this way: applicatory if higher bit position is set to, then the position than low level is set to applicatory.

6. method as claimed in claim 2, but wherein should speed information on aspect the usability of determining specific writing speed relatively this speed information have priority.

7. one kind is used for comprising at optical recording media identifying recording layer/reproduce the device of data from recording medium:

Pick-up, it is configured to the specific region reading and recording velocity information from this optical recording media, and write data in the main data area of this optical recording media or reproduce data from it, wherein this speed information comprises the first information that is used for first writing speed is expressed as dominant record speed, be used for second writing speed is expressed as second information of smallest record speed, be used for the 3rd writing speed is expressed as the 3rd information of the booking situation speed that is different from this minimum and maximum writing speed, and the 4th information that is used for the 4th writing speed is expressed as one or more master record speed; Wherein at least one master record speed must be supported by this optical recording media, but this pick-up is configured to read whether speed information applicatory of the specific writing speed of expression; And

Storer, but it is configured to store speed information and the speed information that reads from this pick-up;

Controller, it operationally is coupled to this pick-up and this storer, but and be configured to discern this speed information and speed information, but and control this pick-up according to the speed information of being discerned and speed information and write data or reproduce data.

8. device as claimed in claim 7, wherein said pick-up further read writes policy information, and this is write policy information and represents applicable to the write strategy types at the recording medium identifying recording layer.

9. device as claimed in claim 8, wherein said pick-up further read a plurality of writing speed parameters, and these a plurality of writing speed parameters are used for the writing speed record data with separately.

10. device as claimed in claim 8, but wherein be somebody's turn to do speed information is represented specific writing speed with bit position usability.

11. device as claimed in claim 7, but wherein configuration should speed information by this way: applicatory if higher bit position is set to, then be set to than the position of low level applicatory,

Wherein but this controller is configured to control this pick-up based on this speed information and comes record data.

12. device as claimed in claim 11, but wherein should speed information on aspect the usability of determining specific writing speed relatively this speed information have priority.

13. one kind in optical recording media identifying recording layer/method of reproducing data from recording medium, it comprises:

Read control information from the specific region of this optical recording media, wherein this control information comprises the first velocity information field of expression dominant record speed, the second speed information field of expression smallest record speed, the third speed information field of representing one or more master record speed, and the 4th velocity information field of expression booking situation speed, this booking situation speed is different from this minimum and maximum writing speed, wherein at least one master record speed must be supported by this optical recording media, but this control information comprises whether speed information applicatory of the specific writing speed of expression; And

According to the control information of being read data are recorded on the main data area of this optical recording media/reproduce data from the main data area of this optical recording media.

14. method as claimed in claim 13, wherein this third speed information represents that by each bit position in the information byte whether each master record speed is applicable to this recording medium.

15. method as claimed in claim 14 wherein reads this first to third speed information from each included recording layer of this recording medium.

16. method as claimed in claim 14, but wherein be somebody's turn to do speed information is represented each specific writing speed with bit position usability.

17. method as claimed in claim 16, be somebody's turn to do speed information but wherein dispose by this way: applicatory if higher bit position is set to, then the position than low level is set to applicatory.

18. method as claimed in claim 17, but wherein should speed information on aspect the usability of determining this specific writing speed relatively this first and the 4th velocity information have priority.

19. method as claimed in claim 14, wherein this control information further comprises write strategy types information, and this write strategy types information representation is applicable to the write strategy types at the recording medium identifying recording layer.

20. one kind is reproduced the device of data at the optical recording media identifying recording layer or from optical recording media, comprising:

Pick-up, it is configured to read control information from the specific region of this optical recording media, and at this optical recording media identifying recording layer or from its reproduction data, wherein this control information comprises the first velocity information field of expression dominant record speed, the second speed information field of expression smallest record speed, the third speed information field of representing one or more master record speed, and the 4th velocity information field of expression booking situation speed, this booking situation speed is different from this minimum and maximum writing speed, but this control information further comprises whether speed information applicatory of the specific writing speed of expression, and wherein at least one master record speed must be supported by this optical recording media; With

Controller, it operationally is coupled to this pick-up, and is configured to control these pick-up record data or reproduce data according to the control information of being read.

21. device as claimed in claim 20, wherein this third speed information represents that by each bit position in the information byte whether each master record speed is applicable to this recording medium.

22. device as claimed in claim 21, wherein said pickup unit read this first to third speed information from each included recording layer of this recording medium.

23. device as claimed in claim 21, but wherein configuration should speed information by this way: applicatory if higher bit position is set to, then be set to than the position of low level applicatory,

24. device as claimed in claim 23, but wherein should speed information on aspect the usability of determining this specific writing speed relatively this first and the 4th velocity information have priority.

25. device as claimed in claim 20, wherein this control information further comprises write strategy types information, and this write strategy types information representation is applicable to the write strategy types at this recording medium identifying recording layer.