CN1926624B

CN1926624B - Apparatus and methods for recording data on recording medium and reproducing data from the recording medium

Info

Publication number: CN1926624B
Application number: CN2004800425025A
Authority: CN
Inventors: 朴容彻
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2004-03-19
Filing date: 2004-12-30
Publication date: 2011-02-16
Anticipated expiration: 2024-12-30
Also published as: CN101217049A; CN101572098B; CN101217049B; CN101572098A; CN1934622A; CN101114471B; CN1926624A; CN101114471A; CN1934623A; CN1934622B; CN1934623B

Abstract

A recording medium, such as a high-density and/or optical recording medium including physical access control (PAC) information recorded thereon, and apparatus and methods for recording to and reproducing from the recording medium, in order to improve data protection, data management and/or reproduction compatibility.

Description

Be used at the recording medium identifying recording layer with from the equipment and the method for recording medium reproducing data

Technical field

The present invention relates to PAC (physical access control), PAC district, PAC bunch, comprise the PAC district and/or bunch medium (for example, such as high density compact discs such as Blu-ray disc) and be used for to this medium recording and/or from the equipment and the method for these media reproducing data.

Background technology

For example medium such as CD can be used to write down lot of data.In the middle of various available CDs, in the middle of developing such as the high density optical media (HD-DVD) of Blu-ray disc permissions such as (hereinafter referred to as " BD ") record and/or more High Density Video of storage and/or voice data.

BD also comprises can rewrite Blu-ray disc (BD-RE), write-once Blu-ray disc (BD-WO) and read-only Blu-ray disc (BD-ROM).

Current, may there be incompatibility between the driver that a problem of existing system is a different editions, for example, the driver with previous version of one group of previous ability may be difficult to and comprise from the mutual medium of the driver of at least one ability in one group of ability afterwards mutual.

Summary of the invention

Exemplary embodiment of the present invention provides such as the PAC on the media such as high density compact disc and is used for to the medium recording data of using PAC with from the equipment and the method for the media reproducing data of using PAC.

Exemplary embodiment of the present invention provides the superincumbent physical access of record control (PAC) information, is used to strengthen data protection, strengthens data management, improves reproduction compatibility, avoids data corruption and/or reduces unnecessary, repeated operation.

Exemplary embodiment of the present invention provides such as media such as high density compact disc and the equipment and the method that are used to manage PAC.

Exemplary embodiment of the present invention provides such as medium such as high density compact disc and equipment and the method for using PAC to come management data.

In one exemplary embodiment, the present invention is directed to the recording medium that comprises at least one physical access control (PAC) district, this at least one physical access control (PAC) is distinguished and then is comprised at least one physical access control (PAC) bunch, and this at least one PAC bunch comprise and be used to manage to the record of this recording medium and/or from the information of the reproduction of this recording medium.

In one exemplary embodiment, the present invention is directed to a kind of method at the enterprising line item of recording medium, comprising that record contains is used for to the record of recording medium and/or from the physical access control (PAC) of the information of the reproduction of recording medium bunch, and record comprises PAC bunch of status information of PAC bunch validity at least.

In one exemplary embodiment, the present invention is directed to a kind of method from recording medium reproducing, comprising: read the status information of at least one physical access control (PAC) bunch, this at least one PAC bunch comprises the information that is used to manage from the reproduction of recording medium; And reading this at least one PAC bunch based on status information, this status information comprises each PAC bunch validity at least.

In one exemplary embodiment, the present invention is directed to a kind of being used for to recording medium recording and/or from the equipment of recording medium reproducing, comprising: driver is used to drive optical recording apparatus at the recording medium identifying recording layer or from the recording medium reproducing data; And controller, be used for coming the Control Driver record or reproducing data based at least one physical access control (PAC) district, this at least one PAC district comprises at least one physical access control (PAC) bunch, PAC bunch comprises and is used to manage to the record of recording medium and/or from the information of the reproduction of recording medium, this at least one PAC district also comprises each PAC bunch status information, and status information is indicated each PAC bunch validity at least.

In one exemplary embodiment, the present invention is directed to a kind of being used for to recording medium recording and/or from the equipment of recording medium reproducing, comprising: driver is used to drive optical record medium at the recording medium identifying recording layer or from the recording medium reproducing data; And controller, be used for coming the Control Driver record or reproducing data based at least one physical access control (PAC) district, this at least one PAC district comprises at least one physical access control (PAC) bunch, described controller reads at least one PAC bunch status information, this at least one PAC bunch comprises the information that is used to manage from the reproduction of recording medium, and described controller reads this at least one PAC bunch based on status information, and status information comprises each PAC bunch validity at least.

In one exemplary embodiment, the present invention is directed to a kind of recording medium that comprises the status information of at least one physical access control (PAC) bunch and each PAC bunch, PAC bunch comprises and is used to manage from the record of recording medium and/or to the information of the reproduction of recording medium, and status information is indicated each PAC bunch validity at least.

The above general description and the following detailed description that should be appreciated that the embodiment of the invention are exemplary and explanat, and are intended to for further explanation is provided as the present invention for required protection.

Brief Description Of Drawings

Comprise that accompanying drawing is for the further understanding to exemplary embodiment of the present is provided, they are included and are constituted the application's a part, and accompanying drawing shows exemplary embodiment of the present invention, wherein,

Fig. 1 illustrates according to the PAC district on the high density compact disc of one exemplary embodiment of the present invention;

Fig. 2 is the synoptic diagram that illustrates according to the configuration in INFO2 district on the high density compact disc of one exemplary embodiment of the present invention and INFO1 district;

Fig. 3 illustrates the PAC structure on the high density compact disc of being recorded in according to one exemplary embodiment of the present invention;

Fig. 4 illustrates the structure according to the PAC on the high density compact disc of one exemplary embodiment of the present invention;

Fig. 5 illustrates the configuration according to " unknown PAC rule " field of one exemplary embodiment of the present invention;

Fig. 6 illustrates according to the section district on the high density compact disc of one exemplary embodiment of the present invention;

Fig. 7 illustrates according to the PAC district on the high density compact disc of one exemplary embodiment of the present invention;

Fig. 8 illustrates according to the section district by the management of a plurality of PAC district on the high density compact disc of one exemplary embodiment of the present invention;

Fig. 9 illustrates according to the dish definition structure (DDS) on the high density compact disc of one exemplary embodiment of the present invention;

Figure 10 illustrates the DDS according to the expression PAC state on the high density compact disc of one exemplary embodiment of the present invention;

Figure 11 to 13 is the synoptic diagram that illustrate according to several different schemes of the DDS of one exemplary embodiment of the present invention, and wherein every kind of different schemes is represented a kind of PAC state on the high density compact disc;

Figure 14 illustrates other different schemes according to the DDS on the high density compact disc of exemplary embodiment of the present invention;

Figure 15 illustrates other different schemes according to the DDS of the expression PAC state on the high density compact disc of exemplary embodiment of the present invention;

Figure 16 illustrates the DDS according to the expression PAC state on the high density compact disc of another exemplary embodiment of the present invention;

Figure 17 illustrates the block diagram according to the optical recording/reproducing apparatus of one exemplary embodiment of the present invention;

Figure 18 illustrates according to one exemplary embodiment of the present invention a kind of to have write down the high density compact disc record of PAC upward and/or from the process flow diagram of the method for its reproduction.

Implement best mode of the present invention

Now will be in detail with reference to embodiments of the invention, the example of these embodiment has been shown in the accompanying drawing.In any possible occasion, in institute's drawings attached, will use identical mark to represent same or analogous part.

Fig. 1 illustrates according to the PAC district on the high density compact disc of one exemplary embodiment of the present invention.

Referring to Fig. 1, high density compact disc can be partitioned from the inner ring to the outer ring introduces district, data field and draw-out area.The INFO2 district and the INFO1 district that are used to write down various information above introducing is distinguished and can is by further subregion.INFO2 district and/or INFO1 district can comprise PAC (physical access control) district.

For simplicity, the PAC district that distributes to the INFO2 district is marked as the PACII district, and the PAC district that distributes to the INFO1 district is marked as the PACI district.Can write down original PAC above one of PACII district and PACI district, and another can be the backup area that is used to write down the copy of original PAC.If write direction and be inner ring from dish to the outer ring, then original PAC is recorded in the PACII district, will be favourable in the PACI district and will back up that PAC is recorded in.

Can provide the PAC district to handle contingent problem when the actuator device than legacy version can't detect function on the dish of having of being added and the function of the actuator device compatibility of more recent version.The PAC district can use one or more " unknown rule " to handle compatibility issue.

" unknown rule " can be used for the predictable operations of console panel, for example to the linearity in the basic controlling of reading and writing etc., defectiveness district replace, logical overwrite or the like.Also can provide indication " unknown rule " suitable wherein zone on dish, for example be used to define the section of whole certain part of coiling or coiling, this will be described in more detail below.

Thus, by the zone of definition dish, can visit the dish of more recent version by using " unknown rule " than the actuator device of legacy version, thereby reduce unnecessary accessing operation than old version drive equipment.

In addition; by for coming than the accessible area on the physical region of the actuator device definition dish of legacy version by using PAC to conduct interviews; the data field of the user data that comprises on it to be write down can be subjected to more strong protection; and/or can prevent or reduce to the dish unauthorized access (for example, assault).

But introducing the INFO2 district and the INFO1 district that wherein have PACII and I district in the district can comment in view of the write attribute of high density compact disc.

Fig. 2 is the synoptic diagram that illustrates according to the configuration in INFO2 district on the high density compact disc of one exemplary embodiment of the present invention and INFO1 district.

With reference to figure 2, for an example BD-RE high density compact disc, the INFO2 district can have 256 bunches, comprises 32 bunches of the PACII district, is used for 32 bunches of DMA (defect management) 2 districts of defect management, records 32 bunches of BZ (buffer zone) 3 districts of 32 bunches of CD (control data) 2 districts of control information and/or buffer zone on it.

The INFO1 district can comprise 32 bunches of the BZ2 district of buffer zone, 32 bunches of drive zone (can be the drive zone that is used for the storage drive specific information), be used for 32 bunches of the DMA1 district of managing defect, be used for 32 bunches of the CD1 district of record controls information and/or can be used as the BZ1-PACI district in PAC district.

For write-once high density compact disc (BD-R), the INFO2 district can have 256 bunches, comprises PACII district, DMA2 district, CD2 district and BZ3 district, its each all have 32 bunches; And the INFO21 district comprises BZ2 district, DMA1 district, CD1 district and/or BZ1-PACI district, its each all have 32 bunches, and 128 bunches of drive zone.

For read-only high density compact disc (BD-ROM), PAC can be main PAC, and the INFO2 district can have 256 bunches, comprises PACII district, CD2 district and BZ3 district, its each all have 32 bunches; And 256 bunches of the INFO1 district comprise CD1 district and/or BZ1-PACI district, its each all have 32 bunches.

The PAC district of exemplary embodiment of the present invention can be assigned to INFO2 district and/or the INFO1 district that introduces in the district according to the rewritten characteristic of high density compact disc, and each is distributed 32 bunches.

In 32 bunches PAC district, a PAC can have one bunch, is used to write down a plurality of effective PAC.Wherein write down a PAC as one bunch example structure with being described with reference to Figure 3.

Fig. 3 shows the PAC that writes down on the high density compact disc according to one exemplary embodiment of the present invention.

A PAC with reference to 3, one bunches of sizes of figure (32 sectors) can comprise heading area and the specific information district that is exclusively used in particular plate driver (for example, CD drive).The PAC heading area can have 384 bytes of first sector of distributing to PAC, be used to write down various PAC information, such as the information about " unknown PAC rule " and section, and can write down the information that is exclusively used in (light) disk drive on another zone in PAC district, this information can be called as " known regimes ".

With the example structure that is described with reference to Figure 4 with the PAC that writes down in the said structure.For simplicity, in this is described, need among the PAC that specific fields will be with reference to the accompanying drawing that these specific fields are shown in greater detail.

Fig. 4 shows according to the PAC on the high density compact disc of one exemplary embodiment of the present invention.

With reference to figure 4, PAC can comprise the stem part that is applicable to all PAC with and on write down the information that is exclusively used in driver the zone.

Example stem part can comprise " PAC_ID " of 4 bytes, " unknown PAC rule ", " entire--disc--flags ", " hop count " and/or 32 sections of 1 byte of 1 byte of 4 bytes, and promptly section 0 is to section 31, its each 8 bytes are arranged.

" PAC_ID " can provide current PAC state and identification code, for example, if " PAC_ID " comprises ' 0,000 00 00 ' position, then should not be used by the current PAC of " PAC_ID " indication; If " PAC_ID " comprises " FFFF FF FE " position, then should " PAC_ID " indicate current PAC district because defective or similar former thereby unavailable; ' " PAC_ID " then is somebody's turn to do even the current PAC of indication district before had been used in FF FF FF FF ' position, and this PAC district also can be used again and " if PAC_ID " comprises.

By writing down " PAC_ID " such as pre-determined bit such as ' 54 53 54 00 ' positions, " PAC_ID " but can be used as and be used for determining whether dish is the code of the dish of current drive free access.Promptly, if current drive can not be discerned applied " PAC_ID " (may be current drive can not discern under the reason of mismatched etc. current PAC situation), then ' 54 53 54 00 ' position can be used as the code of the information of reference record in " unknown PAC rule " field.

As mentioned above, " unknown PAC rule " field can be used as the field of opereating specification that appointment can't be discerned the driver of current PAC, and this will further describe with reference to figure 5.

Fig. 5 shows " the unknown PAC rule " field according to one exemplary embodiment of the present invention.

With reference to figure 5, the regional controllability degree of each on the dish can be enabled by " unknown PAC rule ".In this example, the zone of control on " zone " the row indicating panel among Fig. 5, " control " tabulation is shown such as control types such as read/write, and the figure place that control is required is shown in " figure place " tabulation.Additional bit in " figure place " row can represent to have the situation of the dual layer discs of two recoding/reproduction faces.

For example, in Fig. 5 " zone " row, the read/write controllability in PAC district can represent with "

PAC district

1,2 " field, and the writing controllability and can use "

DMA district

1,2 " field represent of defect management.The writing controllability and can represent that the read/write controllability of data field can be represented with " data field " field of the replacement zone in defectiveness zone with " replacement cluster " field, and the logical overwrite controllability can be represented with " logical overwrite " field.

Write controllability and be only applicable to rewritable disk BD-RE and BD-R, and the controllability of writing in the replacement zone in defectiveness zone also is applicable to rewritable disk BD-RE and BD-R.Thus, various exemplary characteristics of the present invention can be depending on the rewritten characteristic of high density (light) dish.

Use above-mentioned technology, it is the driver appointment zone of control of mismatched that " unknown PAC rule " field allows on dish.In addition, above-mentioned technology is also applicable to the visit of controlling according to user's selection the specific physical region on the dish.

Return Fig. 4, " entire--disc--flags " field can be used as indication PAC and be applicable to the field in whole panel, and " hop count " field is to represent that section that PAC is suitable for distinguishes the field of number.

In one exemplary embodiment, section from maximum number a to PAC that can distribute.In one exemplary embodiment, can distribute maximum number to PAC be 32 section, and can be written in " section 0 " that respectively comprise 8 bytes about the information of the section of being distributed and arrive in " section 31 " field.Each all comprises first physical sector number (PSN) and the tail PSN in the record section district thereon that is distributed " section 0 " to " section 31 " field.

Below in more detail section is described.Fig. 6 illustrates according to the section district on the high density compact disc of one exemplary embodiment of the present invention.

Referring to Fig. 6, if necessary, the section district of maximum number (for example, 32) can be arranged on high density compact disc, be used for using PAC to it.The section district of maximum number can be from " section 0 ".

In one example, by a PSN who writes the starting position that can indicate the section district that is distributed on " section " field in PACII and PACI district and the tail PSN that can indicate the rearmost position in the section district that is distributed, the position in section district just can be identified by CD drive.

In an example arrangement, distributed a plurality of sections do not need to overlap entirely, and beginning and end position can bunch boundary specify.

Thus, in the exemplary embodiment, the present invention can provide a plurality of PAC, is used to manage several (for example, 32) section district, and this will describe in more detail following.

Fig. 7 illustrates according to the PAC district on the high density compact disc of one exemplary embodiment of the present invention.

Referring to Fig. 7, can in a PAC district (for example, the PAC district of INFO2 or INFO1) of 32 bunches of sizes, write a plurality of effective PAC with same cluster size.The effective PAC district that can represent to have above-mentioned various PAC information and comprise copy, () effective PAC for example, 16, each has identical size these effective PAC, and can be assigned to a PAC district can to comprise maximum number.

The predetermined PAC_ID (for example, PAC_ID=54 53 54 00) that the driver versions that effective PAC can have with above-noted the CD of this PAC conforms to, and the PAC district that is not used can be standby PAC district.According to the setting of CD drive, 00 of not being used in this district of available indication, standby PAC district fills (PAC_ID=00 00 00 00), maybe can be retained as " using the zone ".

Because in the situation of write-once high density compact disc BD-R, only write-once is that physics is possible, so in one example, does not write any content in the spare area, finishes or coil and be closed (user does not carry out any other write in expectation) until writing.

Because physics repetition overwrite is possible in the situation that can rewrite high density compact disc BD-RE, so in one example, even effective PAC and copy PAC thereof are written in the PAC district of 32 bunches of sizes, it also is acceptable that several times write.

If defectiveness in will writing the PAC district of PAC therein then can be written to this PAC in the ensuing zone, defectiveness zone.Defective may be the result that panel surface is damaged or polluted, and when in the time will writing the region generating defective of PAC, PAC information can be written in the ensuing zone, defectiveness zone.

A plurality of effective PAC that can be assigned to the PAC district can have and the relevant various information of zone of control of dish, will be described this with reference to figure 8.

Fig. 8 illustrates according to the section district by the management of a plurality of PAC district on the high density compact disc of one exemplary embodiment of the present invention.

Referring to Fig. 8,, can on dish, specify the controllable segment district by using a plurality of PAC for the driver of different editions.That is, can come control section 0 Seg#0 and section 1 Seg#1 via the PAC#0 on the dish, come control section 0 Seg#0, section 1 Seg#1 and section 2 Seg#2 via PAC#1, and come control section 0 Seg#0 via PAC#2.

In this example, can all do not overlapped by the section district of corresponding PAC control, and all section district begin to be resequenced by ascending order from section #0, this indication PAC can be separate.

In addition, although a PAC can have 32 section districts at most,, also be no more than 32 by the sum of the section of a plurality of PAC management even in all section situation by a plurality of PAC management.

Avoid zone that writes to above-mentioned PAC district or the initialization and/or the writing speed that may influence dish from the defectiveness district in above-mentioned PAC district when finding the position in effective PAC district from the PAC district or finding the next one can write the position in PAC district fast.Especially, may carry out repeatedly retry to attempt to read the defectiveness zone.

In the exemplary embodiment, the invention provides a kind of various status informations of position about a plurality of effective PAC, position that the next one can be write PAC and/or method of other relevant information of in such as dish definition structure data structures such as (DDS), writing.

DDS can be the information of size of the position that comprises a PSN about defect list, user data area, spare area and/or the district of other relevant information, and can be to be written in information in the DMA district of dish as the information in the defect management structures (DMS) with defect list (DFL).

The information that writes among the DMA is scanned the also information of preload in advance when dish is loaded in the driver.Therefore, in case be written among the DDS as pointer such as various status informations and/or other relevant information about PAC such as the position of a plurality of effective PAC, the position that the next one can be write PAC, CD drive need not to scan all PAC districts just can obtain information about the PAC district.

DDS can comprise the various information about the state in PAC district, below will be described this.

Fig. 9 illustrates according to the DDS on the high density compact disc of one exemplary embodiment of the present invention.

Referring to Fig. 9, DDS can comprise " DDS identifier " field, " DDS form " field, " PSN (P_DA) of drive zone " field of first physical sector number of expression drive zone, " defect list the one PSN (P_DFL) " field of the one PSN of expression defect list, " user data area LSN0 position " field of the position of the LSN (logic sector number) of expression user data area, " inner spare area 0 size (ISA0_size) " field of the size of expression inner spare area 0, " outer spare area size (OSA_size) " field of the size of expression outer spare area 0, " inner spare area 1 size (ISA1_size) " field of the size of expression inner spare area 1, " PAC is allocation space " field of the designated state in " the PAC bunch of defect state " field of the defect state in expression PAC district and/or expression PAC district.

Thus, exemplary DDS can provide the various status informations about PAC, such as by use " PAC bunch of defect state " field and/or " PAC is allocation space " field provide the defectiveness bunch in the PAC district the position and/or to its distributed effective PAC bunch position etc.

Below will describe use " PAC bunch of defect state " field and/or " PAC is allocation space " field in more detail and represent the method for PAC status information.

Figure 10 is the synoptic diagram that illustrates according to the DDS of the expression PAC state on the high density compact disc of one exemplary embodiment of the present invention.

Referring to Figure 10, can be to two bytes of " PAC bunch of defect state " field distribution of DDS, be used to represent write failure owing to what bunch defective in PAC district or defective bunch of district caused.

As shown in the figure, the PDS N among Figure 10 (PAC defect state) position is the position that is used to indicate PAC bunch state, wherein 0 can to indicate PAC bunch of N be not the defectiveness zone, and 1 can to indicate PAC bunch of N be the defectiveness zone.

0 state that can indicate the PAC#0 district of PDS, 1 state that can indicate the PAC#1 district of PDS, the rest may be inferred, until 15 of PDS that is used in reference to the state that is shown with effect PAC that can distribute to PAC district (for example, for totally 16 situation).

Also can distribute two bytes, the distribution state that is used to indicate the PAC district to " PAC is the allocation space " in DDS district.

PSB N among Figure 10 (PAC mode bit) can be the position of the distribution state of PAC bunch of indication, wherein can indicate the PAC bunch of N can be for 0 by newly assigned state, for example, PAC is not used or the state of PAC_ID=00000000 or FFFFFFFF, and 1 state that can indicate PAC bunch of N to be assigned with.

In this example, similar with the PDS position, can distribute the PSB position to 15 of PSB from 0 of PSB, thus 0 indication of PSB PAC#0 district, the PAC#1 district is indicated in the PSB1 position, or the like.The various exemplary embodiments that the DDS that uses as described represents the state in PAC district below will be discussed.

Figure 11 to 13 is the synoptic diagram that illustrate according to the various exemplary embodiments of the DDS that respectively represents a kind of PAC state on the high density compact disc of one exemplary embodiment of the present invention.

Referring to Figure 11, on the bitmap of " PAC bunch of defect state " field, 1 of PDS is 1, the information about the defectiveness zone in PAC district in the information that this field is among the DDS to be comprised.In view of the above, can make CD drive know that the PAC#1 district is defective based on this information.

Equally, on the bitmap of " PAC is allocation space " field of the distribution state in indication PAC district, 2 of PSB0, PSB 1 and PSB also are 1, based on above-mentioned information, can make CD drive know that PAC#0, PAC#1 and PAC#2 district are in distribution state.Therefore, be not the defectiveness zone the next available PAC district of range of distribution be the PAC#3 district.

Equally, referring to Figure 12, because on the bitmap of " PAC bunch of defect state " field, PDS 0, PDS 1, each is 1 for 5 of PDS 4 and PDS, know PAC#0 so can make CD drive, PAC#1, each all is the defectiveness zone for PAC#4 and PAC#5 district, and because on the bitmap of " PAC is allocation space " field, PSB 0, PSB 1, PSB 2, PSB 3, PSB 4, each is 1 for 6 of PSB 5 and PSB, so can make CD drive know PAC#0, PAC#1, PAC#2, PAC#3, PAC#4, each all is to be in distribution state for PAC#5 and PAC#6 district.Therefore, in the situation of Figure 12, next available PAC district is PAC#7.

Equally, referring to Figure 13, because on the bitmap of " PAC bunch of defect state " field, PDS 0, PDS 1, each is 1 for 5 of PDS 4 and PDS, know PAC#0 so can make CD drive, PAC#1, each all is the defectiveness zone for PAC#4 and PAC#5 district, and because on the bitmap of " PAC is allocation space " field, PSB 0, PSB 1, PSB 2, PSB 4, each is 1 for 6 of PSB 5 and PSB, so can make CD drive know PAC#0, PAC#1, PAC#2, PAC#4, each all is to be in distribution state for PAC#5 and PAC#6 district.

Therefore, in the situation of Figure 13, next available PAC district is PAC#3, and it can be current reusable zone, even the PAC#3 zone before was used.

As previously mentioned, can be recorded on the zone in the PACI district in INFO1 district about the copy of the information in the PACII district in INFO2 district corresponding to the zone in the PACII district in INFO2 district.If the PAC#1 district in PACII district is defective, then the PACI district in PAC#1 district can be used (if not having defective).

By distributing additional (for example, 4) byte to DDS, DDS is not only comprised about the information of 4 bytes in PACII district, also comprise information about the PACI district.In this case, write on the defectiveness zone that information on the PACI does not comprise the PACII district.

Figure 14 is the synoptic diagram that illustrates according to another embodiment of the DDS on the high density compact disc of another exemplary embodiment of the present invention.

Referring to Figure 14, as mentioned above, DDS can comprise " PAC state " field of " DDS identifier " field, " DDS form " field, " PSN (P_DA) field of drive zone ", " PSN (P_DFL) of defect list " field, " the LSN0 position of user data area " field, " inner spare area 0 size (ISA0_size) " field, " outer spare area size (OSA_size) " field, " inner spare area 1 size (ISA1_size) " field and/or expression PAC zone state.

" PAC state " field can have 8 bytes, is used for representing the state of PAC in the PACI district in the PACII district in INFO2 district and INFO1 district, below will be described in detail this.

Figure 15 is the synoptic diagram that illustrates according to another embodiment of the DDS of the expression PAC state on the high density compact disc of another exemplary embodiment of the present invention.

Referring to Figure 15, " PAC state " field of DDS can be used 64 positions (8 bytes) altogether, is used for representing the state of PAC in the PACI district in the PACII district in INFO2 district and INFO district.

In this example, information among PAC can represent with two positions, for example, and the state of indicating the PAC#0 in PACI district by minute coordination b1 and b0, divide coordination b2 and b3 to indicate the state of the PAC#2 in PACI district, and the PAC state that distributes follow-up per two positions to indicate the PAC district in succession.In view of the above, position b31 and b30 can represent the PAC#15 state in PACI district, the PAC#0 state that position b33 and b32 can indicate the PAC2 district, and the PAC#15 state that position b63 and b62 can indicate the PAC2 district.

The PAC state in the PAC district that represents with two positions is can indicate PAC not to be recorded at 00 o'clock in these two positions; When these two positions are 01, write PAC as 00 00 00 00 and can indicate PAC to write, even or write as FFFF FF FF can to indicate this PAC to be used in the past also still reusable; When these two positions were 10, PAC was defectiveness zone FF FF FF FE, and when these two positions were 11, PAC was effective PAC (for example, effective PAC=54 53 54 00).

Therefore, it is the zone with position 00 or position 01 that the next one can be write the PAC district, and effectively the position of PAC will be the zone with position 11.

By using said method, " the PAC state " of 8 bytes that CD drive can be from be inserted into DDS district but the field acquisition about the information of the position in the position of effective PAC, defectiveness zone, next one writing position and/or about writing on other relevant information of the PAC in PAC2 district and the PAC1 district.

Figure 16 illustrates the DDS of the expression PAC state on the high density compact disc of another exemplary embodiment according to the present invention.

If the bitmap of " PAC state " field of DDS is identical with the bitmap shown in Figure 16, then because b33 and the b32 of the PAC#0 in the indication PACII district are 11, so know that the PAC#0 in the PACII district is effective PAC.

Equally, because b35 and the b34 of the PAC#1 in the indication PACII district are 10, so know that the PAC#1 in the PACII district is the defectiveness zone, and because b37 and the b36 of the PAC#2 in the indication PACII district are 01, so know that the PAC#2 in the PACII district is the zone that before had been used, or if 00, then be current spendable zone.

In view of the above, if plan to find the position of effective PAC, then CD drive can find " PAC state " field information of DDS to indicate the PAC of position 11, and when planning to find the next one can write the position in PAC district, CD drive can find the position 01 or 00 in " PAC state " information.

In addition, can in the PACI district, write the backup of the PAC information in the PACII district, even the bitmap in the bitmap in the indication PACII district of " PAC state " field and indication PACI district is identical, if the position of defectiveness zone and/or other zone similarity is not identical, then two bitmaps can not be identical.Therefore, if plan to read since inevitably situation be written in information in the PACI district, then possible must from DDS " " field information is with reference to the information of indicating the PACI district for the PAC state.

Except the illustrative methods of the PAC state of representing PACII district and PACI district with 8 bytes among the DDS, also have other only to represent the illustrative methods of the PAC state in PACII district with four bytes.As mentioned above, this is because the information that writes in the PACII district is identical with the information that writes in the PACI district, and in the case, if want to know the PAC state in PACI district, then can determine the PACI district from the position in the PACII district corresponding with the PACI district.

In this example, if, then can adopt this regional method of not using because the zone of the defectiveness in PACII or the PACI district or other analogue cause writing the failure of PAC information accordingly with the position in PACII district in the PACI district.

Represent that with DDS the information of the position of a plurality of effective PAC is favourable for information wherein by writing the dish the write BD-RE or the BD-R that are updated continuously as exemplary embodiment of the present invention.

For example, since the physical characteristics of Write-once disc make in the situation of the write-once high density compact disc BD-R that can change whenever the position of after ejection, repeating to write fashionable a plurality of effective PAC, positional information can be used as temporary disk (T-disk) definition structure (TDDS) information and is written on the temporary disk (T-disk) directorial area (TDMA), and write or finish or coil when closing at dish, promptly the user no longer wants to carry out to be written as DDS information under other situation about writing.

Figure 17 illustrates the block diagram according to the optical recording/reproducing apparatus of one exemplary embodiment of the present invention.

Referring to Figure 17, this optical recording/reproducing apparatus can comprise: data recording/reproducing device 10 is used to carry out to the record of CD and/or from the reproduction of CD; And main frame or controller 20, be used for controlling recording/transcriber 10.In one exemplary embodiment, data recording/reproducing device 10 can play the effect of above-mentioned " CD drive " discussed in conjunction with many exemplary embodiments of the present invention.

In one exemplary embodiment, main frame 20 provides the write command that writes to the specific region of CD or the reproduction instruction of reproducing from the specific region of CD to data recording/reproducing device 10, and data recording/reproducing device 10 is in response to carry out record to this specific region/from the reproduction of this specific region from the instruction of main frame 20.

Data recording/reproducing device 10 also can comprise: interface section 12, be used for executive communication, such as with the data of main frame 20 and the exchange of instruction etc.; Pick up part 11, be used for directly writing/reading from CD to CD; Data processor 13 is used for from picking up part 11 received signals, and reverts to required signal value, or the signal that will write is modulated to the signal that can be written on the CD; Servo segment 14 is used for control and picks up part 11 exactly from optical disc reading signal, or write signal on CD exactly; Storer 15 is used for various information and data that interim storage comprises management information; And microcomputer 16, be used for the various piece of controlling recording/transcriber 10.

A kind of illustrative methods of using this exemplary optical recording/reproducing apparatus to write down PAC on high density writable optical disc below will be described.

In case CD is inserted in the optical recording/reproducing apparatus, management information can be read from CD, and is stored in the storer 15 of data recording/reproducing device 10, to use in optical disc recording/reproducing.

Under this state, if the user wants to write on the specific region of CD, then main frame 20 as write command, provides this about the information of required writing position and the data that will write to data recording/reproducing device 10.

Microcomputer 16 in the data recording/reproducing device 10 can receive write command, management information from be stored in storer 15 determines whether the disc area that main frame 20 is wanted to write is the defectiveness zone, and/or writes according to carrying out data from the write command of main frame 20 on the zone that is not the defectiveness zone.

If determine that writing on whole the dish or on the specific region of dish be the new feature that has comprised that the data recording/reproducing device of previous version is not provided, thereby cause the data recording/reproducing device of previous version not understand, if or be intended to according to the set restriction of user limit such as the specific region to dish write/from the functions such as specific region reproduction of dish, then the microcomputer 16 of data recording/reproducing device 10 can write this regional control information conduct " unknown PAC rule " in the PAC district on the dish.The microcomputer 16 of data recording/reproducing device 10 also can write such as PAC information such as the PAC_ID that writes state and as the segment information of the control information on the specific region of dish.

It is effective PAC of one bunch that PAC information can be written as a plurality of sizes in the PAC2 district in INFO2 district, and these a plurality of effective PAC can be written in the PAC1 district in INFO1 district as backup.In this example, the positional information of a plurality of effective PAC can be written on the DDS among the DMA of CD by method according to an exemplary embodiment of the present invention.

Especially, microcomputer 16 can to servo 14 and data processor 13 positional information and the data in the zone or the PAC district of data have been provided above providing, thereby finish and write via picking up the desired location place of part 11 on CD.

In view of the above, below will describe a kind of recoding/reproduction and have the method that has write the high density compact disc of PAC information by above-mentioned illustrative methods.

Figure 18 is the process flow diagram of method that the high density compact disc of PAC has been shown according to a kind of recoding/reproduction above-noted of one exemplary embodiment of the present invention.

In case CD is inserted in the optical recording/reproducing apparatus, management information can be read from CD, and is stored in the storer 15 of record and transcriber 10, to use in video disc recording and reproduction.

Information in the storer 10 can comprise coils the positional information that goes up each district in the PAC district.Especially, (S10) can be determined from DDS information in the position of the effective PAC in the PAC district.

After the position of having determined effective PAC, can check whether the PAC_ID field of PAC is the PAC_ID (S20 and S30) that has identified with checking PAC_ID.

If the PAC_ID that is write has identified, it is identical that then this method can determine to have write the version of the version of the record of data and transcriber and current record and transcriber on dish, or determine there be not independent writing/reproduce restriction, and can be according to instruction executive logging/reproduction (S40) from main frame 20.

If the code that sign writes on the PAC_ID has been failed, then this method can determine whether the not restriction on an equal basis of version such as version and the current record and the transcriber of record that has write data on dish and transcriber subsequently, can come executive logging/reproduction (S50) with reference to the recoding/reproduction restricted area on the dish that writes on " unknown PAC rule " according to instruction from main frame.

For this reason, microcomputer 16 can according to the instruction of main frame to servo 14 and data processor 13 positional information and data are provided, thereby finish recoding/reproduction via picking up the desired location of part 11 on CD.

As mentioned above, of the present invention have following one or more advantage for equipment and method to high density compact disc record/reproduce from high density compact disc.

At first, the dish accessible area of the driver by defining different editions with PAC can allow the more sane protection in data area of having recorded user data to top, for example, can prevent unauthorized access (for example, assault).

The second, a plurality of effective PAC on the dish and/or indicate the pointer of these PAC positions can allow the more effective management to the PAC on the high density compact disc.

The 3rd, come the equipment of recording/reproducing data and method can allow more effective data recoding/reproduction on the high density compact disc with PAC.

Industrial applicibility

To those skilled in the art, obviously can carry out various modifications and changes and can not depart from the spirit or scope of the present invention above-mentioned exemplary embodiment of the present invention. Thus, be intended to that the present invention is covered and drop in claims and the equivalence techniques scheme scope thereof to modifications and variations of the present invention.

Claims

1. method at the recording medium identifying recording layer comprises:

The physical access control data of the compatibility between the equipment that at least one control data zone record is used to improve recording medium and be used for recording/reproducing data, described physical access control data comprise and are used for the rule that when described equipment can not be discerned described physical access control data regulation is applicable to the operation of described recording medium; And

Write down the status information at least one control data zone at least one management area, described status information is indicated described control data zone to comprise effective physical access control data or is comprised invalid physical access control data.

2. the method for claim 1 is characterized in that, described recording medium is a re-writable recording medium, and described at least one management area is dish definition structure DDS.

3. the method for claim 1 is characterized in that, described status information comprises at least one position.

4. method as claimed in claim 3 is characterized in that described status information comprises the state bitmap.

5. the method for claim 1 is characterized in that, described recording medium is the write-once recording medium, and described at least one management area is temporary disk (T-disk) definition structure TDDS.

6. the method for claim 1 is characterized in that, described at least one control data zone is arranged in the block of information in the introducing district of described recording medium.

7. the method for claim 1 is characterized in that, also comprises:

Record physical access control data in first control data zone; And

The copy of the described physical access control data of record in second control data zone.

8. method as claimed in claim 7 is characterized in that, described first and second control data zone are arranged in the different block of information in the introducing district of described recording medium.

9. the method for claim 1 is characterized in that, described at least one control data zone comprises:

Stem is described at least one common being suitable for of control data zone institute, and

The specific information district comprises described at least one special-purpose information in control data zone, and described specific information district comprises the rule that is used to enable required application or function.

10. method from recording medium reproducing comprises:

Status information from least one the physical access control data of at least one management area reading and recording on recording medium, described status information indication control data zone comprises effective physical access control data or comprises invalid physical access control data, compatibility between the equipment that described at least one physical access control data is used to improve recording medium and be used for recording/reproducing data, described physical access control data comprise and are used for the rule that when described equipment can not be discerned described physical access control data regulation is applicable to the operation of described recording medium; And

Read described at least one physical access control data from least one control data zone based on described status information.

11. method as claimed in claim 10 is characterized in that, described recording medium is a re-writable recording medium, and described at least one management area is dish definition structure DDS.

12. method as claimed in claim 10 is characterized in that, described recording medium is the write-once recording medium, and described at least one management area is temporary disk (T-disk) definition structure TDDS.

13. method as claimed in claim 10 is characterized in that, described at least one control data zone comprises first control data zone and as second control data zone of the copy of described first control data zone.

14. method as claimed in claim 10 is characterized in that, described at least one control data zone comprises:

15. an equipment that is used at the recording medium identifying recording layer comprises:

Pick-up is configured at described recording medium identifying recording layer; And

Control module, be configured to control described pick-up and at least one control data zone, write down at least one physical access control data, and at least one management area the record described at least one physical access control data status information, described at least one physical access control data comprises and is used for the rule that when the equipment that is used for recording/reproducing data can not be discerned described physical access control data regulation is applicable to the operation of described recording medium, described physical access control data controlling recording/reproducer is to the visit of described recording medium, and it is effectively or invalid that described status information is indicated described physical access control data.

16. as equipment as described in the claim 15, it is characterized in that, further comprise:

Send the main device of write order to control module.

17. equipment as claimed in claim 15, it is characterized in that, described control data zone comprises first control data zone and second control data zone, described control module is controlled described pick-up and write down the physical access control data in first control data zone, and writes down the copy of described physical access control data in second control data zone.

18. equipment as claimed in claim 15 is characterized in that, described at least one control data zone comprises:

19. one kind is used for comprising from the equipment of recording medium reproducing data:

Pick-up is configured to from described recording medium reproducing data; And

Control module, be configured to control described pick-up from least one management area read status information, and read to few physical access control data from least one control data zone based on described status information, described at least one physical access control data comprises and is used for the rule that when the equipment that is used for recording/reproducing data can not be discerned described physical access control data regulation is applicable to the operation of described recording medium, described physical access control data controlling recording/reproducer is to the visit of described recording medium, and it is effectively or invalid that described status information is indicated described physical access control data.

20. as equipment as described in the claim 19, it is characterized in that, further comprise:

Send the main device of read command to control module.

21. equipment as claimed in claim 19 is characterized in that, described at least one control data zone comprises first control data zone and as second control data zone of the copy of described first control data zone.

22. equipment as claimed in claim 19 is characterized in that, described at least one control data zone comprises: