CN1934623B

CN1934623B - Recording medium having status information changed upon re-formatting, and device and method for forming, recording, and reproducing recording medium

Info

Publication number: CN1934623B
Application number: CN2005800087254A
Authority: CN
Inventors: 朴容彻
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2004-03-19
Filing date: 2005-03-03
Publication date: 2012-10-10
Anticipated expiration: 2025-03-03
Also published as: CN1926624B; CN101217049A; CN101572098A; CN101114471A; CN101217049B; CN101114471B; CN1926624A; CN1934622A; CN1934623A; CN1934622B; CN101572098B

Abstract

A recording medium, such as a high-density and/or optical recording medium and apparatus and methods for recording to and reproducing from the recording medium, in order to initialize, reinitialize, format, and/or re-format the high-density and/or optical recording medium.

Description

The apparatus and method that the recording medium of the status information that when reformatting, changes arranged on it and be used to form, write down and reproduce this recording medium

Technical field

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

Background technology

For example medium such as CD can be used for writing down mass data.In available CD, a kind of novel high density optical media (HD-DVD), for example Blu-ray disc (below be called " BD ") is just under development, and this optical medium allows record and/or stores more high definition video 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; A problem of existing system is an incompatibility potential between the driver of different editions, for example have one group of previous performance previous version driver with comprising that the mutual medium of the driver of at least one performance in one group of performance subsequently has difficulty when mutual.

Another problem of existing system be confirm initialization for being stored in physical access control (PAC) information that for example can rewrite on the Blu-ray disc media such as (BD-RE), reinitialize, format and/or reformatting process.

Disclosure of the Invention

Example embodiment of the present invention provides such as the PAC on the media such as high density compact disc; And be used to use this PAC to these medium recording data with from the apparatus and method of these media reproducing data, wherein this PAC can be initialised, reinitialize, format and/or reformatting.

In an example embodiment; The present invention is directed to a kind of recording medium with data structure of the data field that is used for managing recording medium; Comprise at least one physical access control (PAC) district; This PAC district further comprises at least one physical access control (PAC) bunch, this at least one PAC bunch further comprise be used to manage to the record of this recording medium with/from the information of the reproduction of this recording medium; And comprising each at least one zone of status information in this at least one PAC bunch, this status information changes when the reformatting recording medium.

In an example embodiment; The present invention is directed to a kind of method of formatted record medium; Comprise sign at least one physical access control (PAC) bunch and this at least one PAC bunch each status information, and based on this status information reformatting the time, change each the status information in this at least one PAC bunch.

In an example embodiment, the present invention is directed to a kind of method of initializing recording media, comprise with all the physics access control (PAC) on this recording medium bunch be categorized into unknown PAC bunch with known PAC bunch; If the initialization of this recording medium is feasible, then initialization is unknown PAC bunch and known PAC bunch; And will record on the directorial area of this recording medium about initialized PAC bunch status information.

In an example embodiment; The present invention is directed to a kind of method that on recording medium, writes down; Comprise sign at least one physical access control (PAC) bunch; This PAC bunch comprises each at least one zone of status information of containing in this at least one PAC bunch, and this status information changes when this recording medium of reformatting; And each the status information that has changed in this at least one PAC bunch recorded on this recording medium.

In an example embodiment; The present invention is directed to a kind of method from recording medium reproducing; Comprise sign at least one physical access control (PAC) bunch; This PAC bunch comprises each at least one zone of status information of containing in this at least one PAC bunch, and this status information changes when this recording medium of reformatting; And from this at least one PAC of this recording medium reproducing bunch each the status information that has changed.

In an example embodiment; The present invention is directed to a kind of being used for to recording medium recording and/or from the device of recording medium reproducing; Comprise being used for that this status information changes when this recording medium of reformatting based at least one physical access control (PAC) bunch each record or controller of reproduction of status information control data with this at least one PAC bunch; And be used on this recording medium record or reproduce this at least one PAC bunch each the pick-up of the status information that has changed.

In an example embodiment, the present invention is directed to a kind of method that is used for initialization such as media such as high density compact discs, comprise the PAC on this medium is categorized into unknown PAC and known PAC; If the initialization of this medium is feasible, then unknown PAC of initialization and known PAC; And on the directorial area of this medium record about the status information of initialized PAC.

In an example embodiment, initialization when unknown PAC can record bunch can writing of this PAC above that.

In an example embodiment; The present invention is directed to a kind of method that is used for initialization such as media such as high density compact discs, comprise the dish definition structure (DDS) that records the PAC status information on it is arranged to state that all PAC can write and initialization PAC district when this medium of initialization not.

In an example embodiment, the present invention is directed to a kind of method that is used for initialization such as media such as high density compact discs, comprise the PAC on this medium is categorized into unknown PAC and known PAC; And if the initialization of this medium is feasible, the known PAC in the initialization PAC district then, and the unknown PAC of not initialization.

Be appreciated that above general description of the present invention and following detailed description all are exemplary and indicative, and aim to provide of the present invention further explanation requiring to protect.

The accompanying drawing summary

Accompanying drawing is included in this so that the further understanding to example embodiment of the present invention to be provided, and is bonded to and constitutes its part among the application, and accompanying drawing shows example embodiment of the present invention, wherein,

Figure 1A and 1B show according to the PAC district on the high density compact disc of one exemplary embodiment of the present invention;

Fig. 2 shows according to INFO2 district on the high density compact disc of one exemplary embodiment of the present invention and INFO1 district;

Fig. 3 shows the PAC that writes down on the high density compact disc according to one example embodiment;

Fig. 4 shows the PAC on the high density compact disc according to one example embodiment;

Fig. 5 shows " unknown PAC rule " field according to one example embodiment;

Fig. 6 shows high density compact disc according to one example embodiment;

Fig. 7 shows the main PAC district on the high density compact disc according to one example embodiment;

Fig. 8 shows the PAC district on the high density compact disc according to one example embodiment;

Fig. 9 shows the DDS on the high density compact disc according to one example embodiment;

Figure 10 shows the status information in PAC district according to one example embodiment;

Figure 11 A-11D shows a plurality of structures according to one example embodiment, its each show the PAC state information field of the status information in indication PAC district among the DDS;

Figure 12 A-12B shows initialization PAC according to one example embodiment;

Figure 13 A-13B shows the initialization PAC according to another example embodiment of the present invention;

Figure 14 A-14B shows the initialization PAC according to another example embodiment of the present invention;

Figure 15 A-15B shows the initialization PAC according to an example embodiment more of the present invention; And

Figure 17 shows the block diagram of optic recording/reproducing device according to one example embodiment.

Realize best mode of the present invention

Now will be in detail with reference to the example embodiment of the present invention shown in the accompanying drawing.Whenever and wherever possible, just in institute's drawings attached, refer to same or analogous part with identical reference number.

In an example embodiment, except that its common and habitual meaning, term " physical access control (PAC) " can comprise the additional information that is recorded on the dish, is used to manage/control the data recording and the reproduction of a whole particular segment in the physical areas of coiling or coiling.For the sake of simplicity, term " physical access control (PAC) " can be called as " PAC ", " PAC information " and/or " PAC control information ".In addition, for the sake of simplicity, the district that records PAC in the dish can be called as " PAC district ", and bunch being that the PAC of unit record in the PAC district can be called as " PAC bunch ".

In addition; PAC according to example embodiment of the present invention can comprise " unknown rule "; This rule can be for having specific unknown PAC_ID and comprising that the driver of the driver of last version (for example, " tradition " version) limits the read/write to the data of a whole dish or a particular segment.Can be called as " unknown PAC " to its PAC that has used " unknown rule ".Similarly, the known specific PAC_ID that is recorded on the PAC can be called as " known regimes ", and " the PAC specific information " that be applied to this PAC can be called as " known PAC ".

In an example embodiment; " known PAC " has with dish relevant information of initialized date and about the information of the register (can be CD drive) of each bunch on the dish (for example; Recorder ID; If with dish of a plurality of recorder traces, then this possibly be a Useful Information) PAC, and can be called as " main PAC ".

To the structure of record PAC in the PAC district be described wherein and through using this structure to write down and reproduce the apparatus and method of data with reference to accompanying drawing.

Figure 1A or 1B show the PAC district on the high density compact disc according to one example embodiment.

With reference to Figure 1A, this high density compact disc can be divided into from the inner ring to the outer ring introduces district, data field and draw-out area.Introduce the district and can further be divided into INFO2 district and INFO1 district, be used for writing down various information above that.INFO2 district and INFO1 district can comprise PAC (physical access control) district.

For simplicity, the PAC district that distributes to the INFO2 district can be marked as the PAC2 district, and the PAC district that distributes to the INFO1 district can be marked as the PAC1 district.Can write down original PAC in one of PAC2 district and PAC1 district, and another can have the backup area of the copy that is used to write down original PAC.If write direction and be inner ring from dish to the outer ring, then advantageously original PAC is recorded in the PACII district, be recorded in the PACI district and will back up PAC.

Figure 1B shows the diagram of the dual layer discs structure with two recording layers; These two recording layers comprise first recording layer (L0: layer 0) and second recording layer (L1: layer 1), and wherein each recording layer comprises introducing/draw-out area (being also referred to as inner area), data field and

outside area

0 or 1.

Each that introduce in district's (inner area 0) and draw-out area (inner area 1) can comprise the INFO2 district and the INFO1 district of the management information that is used for indicator, and the PAC district can be arranged in INFO2 district and/or INFO1 district.

Be similar to single-layered disk, the PAC district that distributes to the INFO2 district can be marked as the PAC2 district, and the PAC district that distributes to the INFO1 district can be marked as the PAC1 district.Can write down original PAC in one of PAC2 district and PAC1 district, and another can have the backup area of the copy that is used to write down original PAC.If write direction and be inner ring from dish to the outer ring, then advantageously original PAC is recorded in the PACII district, be recorded in the PACI district and will back up PAC.

In the example shown in Figure 1B, because for dual layer discs, PAC1 and PAC2 district are not only in introducing is distinguished, and also in the draw-out area, so the PAC of dual layer discs size is the twice of single-layered disk.

The PAC district can be set to handle contingent problem when the drive assembly than legacy version can't detect the function on the dish of having of being added and the function of the drive assembly 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 replacement in the basic controlling of reading and writing etc., defectiveness district, logical overwrite or the like.Also can the zone that indication " unknown rule " is suitable for wherein be set on dish, for example be used to define certain a part of section of whole dish or dish, this will be described in more detail below.

In the zone by " unknown rule " management on dish, similarly zone of DMA (disk management zone), spare area, area and/or other can be set.

In the zone by " unknown rule " management on dish, DMA (disk management zone), spare area, area etc. are arranged,, can specify the section zone of going up the presumptive area that is suitable for " unknown rule " as dish it especially for area.(section will be described in more detail below).

Promptly; Through using " unknown rule "; Can define rule and/or other operation of the predictable operations that is used to control above-mentioned zone, such as begin from the record and the basic operation of reproducing, the linearity replacement in defectiveness zone, logical overwrite and/or other similar operation of BD-WO.

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

In addition; Through conducting interviews through use PAC for coming than the accessible area in the physical region on the drive assembly definition dish of legacy version; The data field of the user data that comprises on it to be write down can receive more strong protection; And/or can prevent or reduce unauthorized access (for example, assault) to dish.

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

Fig. 2 shows INFO2 district and the INFO1 district on the high density compact disc according to one example embodiment.

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 to be used to store the drive zone to the special-purpose information of driver), 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 have 32 bunches; And the INFO1 district comprises BZ2 district, DMA1 district, CD1 district and/or BZ1-PACI district, its each have 32 bunches, and 128 bunches of drive zone.

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

The PAC district of example 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 an example of the dual layer discs with two recording layers, the PAC district not only can be specified in and introduce in the district, also can be specified in the draw-out area, makes a PAC district can have 64 bunches.

In the PAC district of 32 bunches (or 64 bunches), a PAC can have one bunch, is used to write down a plurality of effective PAC.If any required, the PAC of a plurality of bunch of sizes can be arranged also.To describe with reference to figure 3 and wherein write down a PAC as one bunch example structure.

Fig. 3 shows the diagram of the structure of the PAC that writes down on the high density compact disc according to one example embodiment.

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 ".

To the example structure with the PAC of said structure record be described with reference to figure 4.For the purpose of the aspect, in this was described, specific fields will be with reference to the accompanying drawing that this specific fields is shown in greater detail for needs among the PAC.

Fig. 4 shows the diagram of the structure of the PAC on the demonstration high density compact disc according to one example embodiment.

With reference to figure 4, PAC can comprise the stem part that is applicable to all PAC (in one example, nearly 384 bytes of first frame), 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 " section " of 1 byte of 1 byte of 4 bytes, and promptly section 0 is to sections 31, its each 8 bytes are arranged.

" PAC_ID " can provide current PAC state and identification code; For example; If " PAC_ID " is ' 0,000 00 00h ', then should " PAC_ID " can indicate current PAC not to be used, and if " PAC_ID " is ' FF FF FF FFh '; Then be somebody's turn to do " PAC_ID " even can indicate current PAC district before to be used, this PAC district also can be used again.

Through with such as pre-determined bit such as ' 54 53 54 00h ' records " PAC_ID ", should " PAC_ID " but uses and acts on definite dish and whether be the code of the dish of current drive free access.Promptly; If current drive is not known so " PAC_ID " of application; Thereby confirm this to be current drive can not understand under the reason of mismatched etc. the situation of current PAC, then ' 54 53 54 00h ' are as the code of the information that requires reference record on " unknown PAC rule " field.

As stated, " 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 discuss with reference to figure 5.

Fig. 5 shows the diagram of the configuration of demonstration " unknown PAC rule " field according to one example embodiment.

With reference to figure 5, the controllability degree in the various zones on the dish can be launched through " unknown PAC rule ".In this example, the controllable areas 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.

" unknown PAC rule " can be used for a plurality of zones on the console panel.For example, " unknown PAC rule " can indicate record controllability about disk management zone (DMA) district (can comprise or not comprise the dish definition structure (DDS) in INFO1,2,3 and/or 4 districts), can indicate record controllability about the spare area in the data field, can indicate about the record in the district of the control data (CD) in INFO1,2,3 and/or 4 districts and/or reproduce controllability, can indicate about the record and/or the reproduction controllability of the area in the data field and/or can indicate record and/or the reproduction controllability about " PAC bunch " in INFO1 and/or 2 districts.

Following example rule is applicable to various zones (removing " PAC bunch " zone).In control types is under the situation about writing; For example; For position=b3, b5, b6, b7 etc., if the position of being distributed is set as ' 0 ', then this can be used for indicating relative zone to write; And if the position of being distributed is set as ' 1 ', then this can be used for indicating relative zone to write.

In control types is under the situation about reading; For example for position=b2, b4 etc., if the position of being distributed is set as ' 0 ', then this to can be used for indicating relative zone be readable; And if the position of being distributed is set as ' 1 ', then this to can be used for indicating relative zone be unreadable.

For " PAC bunch " district, control types for write (under position=b1) situation, if the position of being distributed is ' 0 ', then this to can be used for indicating the overwrite to current PAC be feasible, the mode bit that perhaps coils definition structure (DDS) is changeable.If the position of being distributed is ' 1 ', then this to can be used for indicating the overwrite to current PAC be infeasible, perhaps the mode bit of DDS is unmodifiable.DDS will more go through hereinafter.

Equally, for " PAC bunch " district, in control types for reading (under position=b0) situation; If the position of being distributed is ' 0 '; Then this to can be used for indication " PAC bunch " district be readable, and when the content of prevariety be that driver can outsidely transmit (for example, being sent to main frame or other similar equipment).If the position of being distributed is ' 1 ', then this can be used for indicating current PAC bunch content (so-called known regimes) except that preceding 384 bytes (stem) of first Frame, can not transmit, and this only can be provided with when expectation comes console panel through unknown rule.

In the example of area; If defined the section zone (hereinafter descriptions) as one " special " on dish zone, then area can be used as to be used to indicate about the section zone and needs not to be the record of whole area and/or the field of reproduction controllability.

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.As a result, various exemplary characteristics of the present invention can be depending on the rewritten characteristic of high density (light) dish.

Use above technology, " unknown PAC rule " field allows the controllable areas on the driver given disc with mismatched.In addition, technology is applicable to that also the user is optionally to coiling the control visit in physical zone more than.

With reference to figure 4, the number of times that " PAC the is New count more " field among Fig. 4 can indicate PAC to upgrade, it can be written into ' 0 ' at first, and/or can when each PAC is rewritten, increase progressively 1.

Moreover in Fig. 4, " entire--disc--flags " field can be used as and is used to indicate PAC to be applicable to the field in the whole zone of dish, and " hop count " field is the field of the number in the section zone that can represent that PAC is suitable for.

In one example, even under the situation of the b0=0 that allows to reinitialize, forbid that mechanism (for example, the write-protect of DDS (WP) sign) allows if write or not by another, then initialization is under an embargo.That is, " entire--disc--flags " can with other write forbid machine process OR (or) function ground operates.

" entire--disc--flags " field can be used as the situation that is not only applicable to unknown PAC, also is applicable to the field of the situation of known PAC.That is, also can control through " entire--disc--flags " field even understand the admissibility that reinitializes of the known PAC of the PAC_ID that allows the application known regimes.

In another example; Under the situation that aforesaid " entire--disc--flags " field is not set; Indicate the extra position (for example, 32 of " unknown PAC rule " field in) that the admissibility that reinitializes is used as " reinitializing sign " of being used to indicate the admissibility that reinitializes also is feasible.

In addition, should be understood that the function of " entire--disc--flags " field is not limited to so sign of name.As can be clearly, the function of " entire--disc--flags " field is applicable to reinitializing of PAC, and this field can be identified as " initialization bit of PAC " field.

In addition, in Fig. 4, " hop count " field is the field of the number in the section zone that can represent that PAC is suitable for.

In an example embodiment, maximum hop count can be assigned to a PAC.In an example embodiment, the maximum number of 32 sections can be assigned to a PAC, and can be written into " section 0 " about the information of the section of being distributed and arrive in " section 31 " field, its each comprise 8 bytes.In " section 0～31 " field each all can comprise first physical sector number (PSN) and last PSN in the section zone of being distributed of record on it.

Section will be described in more detail below.Fig. 6 shows the section district on the high density compact disc according to one example embodiment.

With reference to figure 6, if any required, the section of maximum number (for example, 32) can be arranged on high density compact disc, be used for to its Using P AC.The section zone of maximum number can be from " section 0 " beginning.

Nearly the Duan Kecong of maximum number " section 0 " begins to distribute by ascending order, so that by a PAC management, even and a plurality of PAC are arranged, should not surpass maximum hop count by the sum in the section zone of PAC management yet.

In one example, last PSN of the end position in the section zone that first PSN of the reference position through in " section " field, writing the section zone that indication distributes and indication are distributed, the position in section zone just can be identified by CD drive.

In example is arranged, in a plurality of dispensing sections neither one need overlapping, and reference position and end position can bunch the boundary appointment.

Thus, in example embodiment, the present invention can provide a plurality of PAC to manage a plurality of (for example, 32) section zone, and this will be described in more detail below.

Fig. 7 shows the PAC district on the high density compact disc according to an embodiment of the invention.

With reference to figure 7, " main PAC " can comprise " hop count " of " entire--disc--flags ", 1 byte of " unknown PAC rule ", 1 byte of " PAC is New count more ", 4 bytes of " PAC_ID ", 4 bytes of 4 bytes, do for oneself a plurality of " recorder ID of RID label xxh " field of 32 altogether " section 0～section 31 ", " recorder ID entry number ", " year/moon/day of original records " of 4 bytes of 2 bytes, " reinitializing counting " of 2 bytes and/or 128 bytes of respectively doing for oneself of 8 bytes respectively.

" the recorder ID entry number " of " main PAC ", " year/moon/day of original records ", " reinitializing counting " and " recorder ID of RID label xxh " field can be called as " known regimes ", and it is the PAC specific information that characterizes " main PAC "." main PAC " with this structure below is discussed.

As stated; " PAC_ID " field can be used as the field of the state and the identification code that are used to provide current PAC; And write down to indicate main PAC with ' 50 52 4D 00h '; Particularly, ' 50 52 4D 00h ' represent character " PRM ", and to indicate the version of main PAC be ' 0 ' in last 00h position.

The update times that " PAC is New count more " field can be used for indicating main PAC, it can be written as 00h when initialization, and can when the main PAC of each rewriting, increase progressively 1.

" unknown PAC rule " field is the field that can be used for specifying the opereating specification of the driver that does not understand the main PAC that is identified by " PAC_ID " with structure shown in Figure 5, and can be set as control DMA zone, spare area, control data zone, area, PAC bunch zone and/or other similar data.

" entire--disc--flags " field of main PAC can be set as 00h with the permission initialization, and if do not distribute any section zone, then " hop count " field can be set as 00h with " section i " field.

" recorder ID entry number " field is number and/or the field that the maximum among the main PAC can allow number 252 that can be used for indicating the recorder ID of 128 byte-sized.

" year/moon/day of original records " field is to can be used for the field of year, the moon and the day of the original records of indicator above that, and " reinitializing counting " field is the field that reinitializes number of times that can be used for display disc.

" recorder ID of RID label xxh " field is the field that is used to write down recorder ID information that has been assigned with 128 bytes, and this is used to write down the driver signature of all registers above recorder ID information.The driver signature of 128 bytes can comprise the trade name of 48 bytes, the additional identification information of 48 bytes and/or the sequence number of 32 bytes.

In another example, a plurality of PAC can be arranged, so that the section zone that is assigned with of maximum number (for example, 32) is coiled or reached in these whole of a plurality of PAC management, this will be described in more detail below.

Fig. 8 shows the PAC district on the high density compact disc according to one example embodiment.

With reference to figure 8, a plurality of effective PAC of the same cluster of respectively doing for oneself size can be written in the PAC district (the PAC district of INFO2 or INFO1) that has 32 bunches separately.

As stated; Effectively PAC can be defined as the district that comprises various PAC information, and on the dish (for example, 32 of maximum numbers can be set; Perhaps be 64 under the situation of dual layer discs) effective PAC, its each have one bunch the size that can be assigned to a PAC district.

As stated; Effectively PAC according to the prior PAC_ID that selects of the driver versions of the CD that has write down this PAC on it (for example can have; PAC_ID=54 53 54 00h); And if PAC_ID is 00 00 0000h, then can write down the PAC of FF FF FF FFh above the remainder in PAC district, and still Unrecorded PAC district is still Unrecorded PAC district.

The remainder that does not write down effective PAC in the PAC district on it can have the PAC with the PAC_ID of 00 00 00 00h or FF FFFF FFh, and the PAC district that does not write down any content on it can be left Unrecorded PAC.

In an example embodiment, if will on it writes the PAC district of PAC, defective take place, then this PAC can be written in this Next zone, defectiveness zone.Defective can be caused by damage or the pollution to panel surface, and when defective occurred on the zone that will write PAC, PAC information can be written on this Next zone, defectiveness zone.

Such as the position of from the PAC district, finding out effective PAC district or in the zone of avoiding being written into, find out next operation such as position that can write the PAC district and no longer need write; And consider the initialization and the writing speed of dish; Defectiveness zone in the above-mentioned PAC district possibly be an important problem, and possibly need repeatedly retry to read the defectiveness zone.

In an example embodiment, the invention describes a kind of wherein can be with writing the method on the DDS (dish definition structure) about status information and/or other relevant information of the position of a plurality of effective PAC, position that next can write PAC.

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

The information that writes DMA can be the also information of prestrain that when being loaded into dish in the driver, scans in advance.Therefore; In case will write DDS about various status informations and/or other relevant information of PAC as pointer such as the position of a plurality of effective PAC, the position that next can write PAC etc., CD drive just can obtain the information about the PAC district under the situation that need not scan all PAC districts.

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

Fig. 9 shows the DDS on the high density compact disc according to one example embodiment.

Fig. 9 shows the diagram of the example embodiment of the DDS on the demonstration high density compact disc according to one example embodiment.The example embodiment of Fig. 9 shows dual layer discs, but the instruction of Fig. 9 is equally applicable to single-layered disk.

With reference to figure 9, DDs can comprise first physical sector number of " DDS identifier " field, " DDS form " field, expression driver region " first PSN (P_DA) of driver region " field, expression defect list first PSN " first PSN (P_DFL) of defect list " field, expression area LSN (logic sector number) the position " position of the LSN_0 of area " field, expression inner spare area 0 size " inner spare area 0 size (ISA0_size) " field, expression outside spare area 0 size " outside spare area size (OSA_size) " field, expression inner spare area 1 size " inner spare area 1 size (ISA1_size) " field, write down " mode bit of the INFO1/PAC1 position that L0 is last " field on it, write down " mode bit of the INFO2/PAC2 position that L0 is last " field on it, write down on it and/or write down " mode bit of the INFO2/PAC2 position that L1 is last " field on it about the status information of the PAC2 in the INFO2 district of the second recording layer L1 about " mode bit of the INFO1/PAC1 position that L1 the is last " field of the status information of the PAC1 in the INFO1 district of the second recording layer L1 about the status information of the PAC2 in the INFO2 district of the first recording layer L0 about the status information of the PAC1 in the INFO1 district of the first recording layer L0.

As pointed in the above example, DDS can provide the various status informations about PAC, such as distributed to it effective PAC bunch position, next writable area territory and/or other similar information.

An example of the PAC status information in PAC district according to one example embodiment will more be described in detail with reference to Figure 10.

With reference to Figure 10, status information from the PAC district that is recorded on the DDS to set two positions of each field (for example) that can indicate.In the example of Figure 10; 00 indication is Unrecorded for this PAC bunch, and the PAC of PAC_ID=00 00 00 00h or PAC_ID=FF FF FF FFh has been write down in 01 indication on this PAC bunch, this PAC bunch of 10 indication be invalid PAC (for example; Owing to defective), and 11 indications are effective PAC for this PAC bunch.

Defective is not PAC bunch possibly be identified as invalid sole cause.For example, because " unknown PAC rule " when not readable equally, this PAC bunches also available 10 is designated invalid PAC when PAC bunch.That is, as stated, whether readable the position b0 of " unknown PAC rule " can be used as this PAC bunch of indication position, though wherein PAC bunch to be set as under 1 the situation at this be rewritable, this PAC bunch also is indicated as invalid PAC.

Another example of the PAC status information in PAC district according to one example embodiment will more describe in detail with reference to figure 11A-11D, and wherein each illustrates the structure that shows the PAC state information field of the status information in indication PAC district among the DDS.

Figure 11 A shows the structure of " mode bit of the INFO1/PAC1 position that L0 is last " of the status information in the PAC1 district that is used to indicate the INFO1 district that is assigned to the first recording layer L0.

With reference to figure 11A; " mode bit of the INFO1/PAC1 position that L0 is last " field can have 8 bytes altogether (64) of distributing to it; Begin to (for example) byte location 71 from (for example) byte location 64; Wherein come indicating status information, can indicate information about total several (for example, 32) PAC bunch through using two to each PAC bunch.

Therefore, for example, if be 11 at 64 byte position position b7-b6, then this can be used for indicating the effective PAC of first PAC cocooning tool in the PAC1 district on first recording layer.Equally, if be 01 at (for example) 64 byte position position b5-b4, then this can be used for indicating the 2nd PAC cocooning tool in the PAC1 district on first recording layer that PAC_ID=00 00 00 00h or PAC_ID=FF FF FF FFh are arranged, and indicates this PAC cocooning tool to have and can write PAC.

Equally, can be through same method to record " mode bit of the INFO2/PAC2 position that L0 the is last " field of the PAC2 district in the INFO2 district on first recording layer, this is shown in Figure 11 B.

Figure 11 C shows the example structure that has about " mode bit of the INFO1/PAC1 position that L1 is last " field of the status information of the PAC1 in the INFO1 district of the second recording layer L1; And Figure 11 D is the example structure that has about " mode bit of the INFO2/PAC2 position that L1 is last " field of the status information of the PAC2 in the INFO2 district of the second recording layer L1, has wherein indicated the information about PAC bunch as described above.

In an example embodiment, the characteristic of PAC of the present invention can be summed up as follows.

In effective PAC; Depend on whether effective PAC understands PAC_ID; " unknown PAC " and " known PAC " can be arranged; Wherein " unknown PAC " has record and/or the reproduction control information about some zone on the dish (for example, DMA zone, spare area, area, PAC bunch and/or other similarly regional).If distributed section to area, then record and/or the reproduction control information about area can be used as record and/or reproduction control information about the section zone.

" known PAC " can comprise the specific information that is exclusively used in PAC, and " main PAC " can be defined as a kind of " known PAC " with dish initialization date and time information, recorder ID information and/or other similar information.

The PAC district can have a plurality of effective PAC that specifies to it, and the state of each PAC in PAC district can be recorded among the DDS.

The initialization that can rewrite high density compact disc (BD-RE) is similar.Coil initialization and can comprise format DMS zone and PAC, and scan and confirm to upgrade defect list (DFL) information to the preparation that reuses dish.Because upgrading DFL information is an option, so the initialization that defines among the present invention also can comprise format or reformatting.

The rewritten high density compact disc that defines among the present invention (for example, BD-RE) initialization be intended to comprise reinitialize, format and reformatting.

(for example, whether initialization BD-RE) has the necessary dish of insertion of at first verifying and can be initialised for rewriteeing high density compact disc.Checking to whether dish can be initialised can use " entire--disc--flags " field (also can be called as " initialization bit of PAC ") and/or dish recording prohibition mechanism (for example, the write-protect of DDS (WP sign)) to make.In one example, if a position b0 of " entire--disc--flags " field is set (for example, being changed to ' 1 '), if perhaps recording prohibition mechanism forbids the record that coils then not allowing initialization.

Whether " the full sign " that be allowed in the indication initialization is applicable under the situation of " known PAC " that if " entire--disc--flags " field allows initialization, then " known PAC " can be initialised.

Under the situation of dish by unknown PAC control, if " unknown PAC rule " forbidden record on the data field, then initialization possibly be infeasible.

Under the dish situation that can be initialised, the various example embodiment that are used for initialization (or reinitialize, format or reformatting) high density compact disc according to example embodiment of the present invention are described below.

Figure 12 A-12B shows a kind of technology that is used for initialization PAC according to one example embodiment; Wherein Figure 12 A shows the change in PAC initialization PAC district afterwards, and Figure 12 B shows a kind of technology that is used for the PAC correlation behavior information after the record PAC initialization of DDS zone.

With reference to figure 12A and 12B, in an example initial method, PAC block reservation former state, and only change the PAC correlation behavior information of DDS.

That is, shown in Figure 12 B, only will represent that DDS information about the status information in PAC district changes next into and can write state.For example, indicate the position 11 of the positional information of effective PAC to be changed into position 01, be that next can write the PAC district with indication PAC district, and indicate the position 01 in original writable area territory or position 00 to keep former state.

Do not having under the independent initialized situation in PAC district, this example technique allows simple relatively PAC district initialization procedure through only changing DDS information so that whole PAC district is designated the writable area territory.Do not carry out changing initialized method through DDS information and can be called as logic initialization (or logical formatting) such as the initial physicalization in the such PAC district of above-mentioned example.

Figure 13 A-13B shows a kind of technology that is used for initialization PAC according to another example embodiment of the present invention.

With reference to figure 13A-13B, comprise that " the known PAC " of " main PAC " is initialised, and " unknown PAC " keeps former state.As described, the initialization that can be considered to " the main PAC " of a kind of " known PAC " is feasible, because " entire--disc--flags " can be set as " 0 " (following discussion).

When not having " main PAC " on the dish, this dish can come initialization through locating that at " main PAC " " PAC is New count more " field and " reinitializing counting " field are made as 0, to produce new " main PAC ".Under this situation, write down and can be recorded in the initialized year/moon/day on " year/moon/day of original records " field, and the recorder ID during initialization can be recorded on " recorder ID of RID label 01 " field.

As there not being " main PAC " on the fruit tray, then new " main PAC " increases progressively 1 with " PAC is New count more " field value, and the record initialized year/moon/day is set on " year/moon of original records/day " field.In addition, wipe all recorder ID tabulation of having write down, and the recorder ID of original records can be recorded on " recorder ID of RID label 01 " field, and " reinitializing counting " field can increase progressively 1.

If through said method initialization " main PAC ", " unknown PAC " keeps former state simultaneously, and then all information about effective PAC are kept intact among the DDS, shown in Figure 13 B.

Dish during initialization " unknown PAC " can keep former state because this PAC not only has the information about the user area, also relevant for the information of other zone on the dish (for example, DMA zone, spare area, control data zone and/or other similarly regional).As a result, how initialization is feasible with " unknown PAC " reservation former state all to user data.

Figure 14 A-14B shows a kind of technology that is used for initialization PAC according to another example embodiment of the present invention.

With reference to figure 14A-14B, " known PAC " and " unknown PAC " all can be initialised, and comprises " main PAC ".

Therefore; With reference to figure 14A, " the unknown PAC " that have " the unknown PAC " of PAC_ID=A (wherein " A " be designator) arbitrarily and have a PAC_ID=B (also be designator) arbitrarily all can be initialized to next writable area territory PAC_ID=00 00 00 00h or PAC_ID=FF FF FF FFh." main PAC " for example can use the technology shown in Figure 13 A-13B to come initialization.

With reference to figure 14B, position 11 can be used for effective PAC of indication " unknown PAC ", and the PAC relevant information of DDS can change 01 into.

Figure 15 A-15B shows a kind of technology that is used for initialization PAC according to another example embodiment of the present invention.

With reference to figure 15A-15B, be similar to Figure 14 A-14B, " known PAC " and " unknown PAC " all can be initialised, and comprises " main PAC ", and the position b1 with " unknown PAC rule " takes into account simultaneously.

Promptly; As stated; The position b1 of " if unknown PAC rule ", the record controls position that promptly is used for PAC bunch of zone is set as (for example) 1 to forbid the rewriting on PAC bunch, and then the initialization of " unknown PAC " is under an embargo; And if the position b1 of " unknown PAC rule " is set as (for example) 0 with the rewriting on allowing PAC bunch, then the initialization of " unknown PAC " is feasible.

Therefore, how all " unknown PAC " to be kept former state, then can pass through to use position b1 that " unknown PAC " kept former state, and for " the unknown PAC " that will keep former state, DDS is left 11 as effective PAC if expect user data.

Figure 16 shows the block diagram of optic recording/reproducing device according to one example embodiment.

With reference to figure 9, this optic recording/reproducing device can comprise and being used for the recording/reproducing apparatus 10 of CD executive logging/reproduction and main frame or the controller 20 that is used for controlling recording/reproducer 10.In an example embodiment, recording/reproducing apparatus 10 can be taken on " CD drive " that preceding text combine a plurality of example embodiment of the present invention to discuss.

In an example embodiment; Main frame 20 provides the specific region that writes CD or writes or reproduction instruction from what reproduced the specific region of CD to recording/reproducing apparatus 10, and recording/reproducing apparatus 10 is in response to carry out record to the specific region/from the reproduction of specific region from the instruction of main frame 20.

Recording/reproducing apparatus 10 also can comprise and be used to carry out such as waiting the interface section 12 of communicating by letter with the data of main frame 20 with the instruction exchange; Be used for picking up part 11 with what data were write direct CD/from the direct reading of data of CD; Be used for being modulated into the data processor 13 of the signal that can be written into CD from the signal that the signal value that picks up part 11 reception signals and recover to expect maybe will write; Be used to control and pick up part 11 and read signal exactly or signal write exactly the servo segment 14 of CD from CD; Be used for the interim storer 15 that stores the various information that comprise management information and data; And the microcomputer 16 that is used for the various piece of controlling recording/reproducer 10.

Below use description to use this example optical recording/transcriber on high density writable optical disc, to write down the exemplary method of PAC.

After being inserted into CD in the optic recording/reproducing device, can from CD, read management information and it is stored in the storer 15 of recording/reproducing apparatus 10, use during for recording/reproducing optical disk.

In this state, if the specific region of user expectation writing optical disk, then main frame 20 as write command, provides this about the information of the writing position of expectation and the data that will write to recording/reproducing apparatus 10.

Microcomputer 16 in the recording/reproducing apparatus 10 can receive write command; Whether the zone of confirming the CD that main frame 20 expectations write in the management information from be stored in storer 15 is the defectiveness zone, and/or according to from the write command of main frame 20 to not being that the zone in defectiveness zone is carried out data and write.

If the new feature that definite recording/reproducing apparatus that writing of specific region on whole dish or the dish comprised last version is not equipped with; Thereby cause the recording/reproducing apparatus of this last version to understand; Function such as read if perhaps be intended to limit such as the specific region that writes dish/from the specific region of dish according to the restriction that the user is provided with, then the microcomputer 16 of recording/reproducing apparatus 10 can be write control information that should the zone in the PAC district on the dish as " unknown PAC is regular ".The microcomputer 16 of recording/reproducing apparatus 10 also can be with writing the PAC_ID of state and the specific region of writing dish as the PAC information such as segment information of control information such as being used for.

In addition, the microcomputer 16 of recording/reproducing apparatus 10 also can be write PAC_ID and segment information on the specific region of dish as PAC information.Recorder ID information can be recorded in " main PAC's " on " recorder ID of RID label ".

PAC information can be when needed writes among a plurality of effective PAC in the PAC1 district of INFO1 with one bunch size, and the copy that is recorded in the PAC in the PAC1 district can be used as backup and writes in the PAC2 district in INFO2 district.

Microcomputer 16 can be with the zone that writes data on it, or the positional information in PAC district and data offer servo segment 14 and data processor 13, accomplishes so that write through picking up the desired locations place of part 11 on CD.

Can execution as described above under the control of the microcomputer 16 of record and reproducer 10 through said method to the initialization of the high density compact disc that write down PAC on it.In an example embodiment; But initialization " unknown PAC " when having write down bunch can the writing of PAC on it, and the initialization of " the main PAC " of " known PAC " can be through record about the recorder ID and the information on initialized date and upgrade relevant count information and carry out.

In another example embodiment, the high density compact disc that has write PAC on it is write down and/the method reproduced from this high density compact disc describing a kind of being used for.

After CD is inserted into optic recording/reproducing device, can from CD, read management information, and it is stored in the storer 15 of record and reproducer 10, use during for record and reproduction CD.

Information in the storer 10 can comprise the positional information in various districts included in the PAC district on the dish.Particularly, the position of the effective PAC in the PAC district can be learnt from dish definition structure (DDS) information.After the position of the effective PAC of cicada, can check the PAC_ID field of PAC, whether PAC_ID is to identify PAC_ID with checking.

If PAC_ID can identify; Then this method confirms that the record that on dish, has write data has the version identical with reproducer with current record with reproducer; Perhaps there be not independent writing/reproduce restriction, and according to the instruction executive logging/reproduction from main frame 20.

If PAC_ID can not identify; Confirm that then this is that whole dish or section zone are existed record and reproduce the situation of restriction, and can come executive logging/reproduction according to instruction with reference to being written as " unknown PAC rule " and/or the recoding/reproduction restricted area of " section " on the dish from main frame 20.

Microcomputer 16 will offer servo segment 14 and data processor 13 according to positional information and the data from the instruction of main frame then, so that recoding/reproduction is accomplished through the position of picking up part 11 and on CD, expecting.

As stated, according to one or more in high density compact disc record and the method and apparatus that reproduces can have the following advantages of being used for of each example embodiment of the present invention.

At first, each embodiment permission of upgrading PAC district and relative DDS information is carried out effective initialization to high density compact disc.

Secondly, use PAC to come each embodiment of recording/reproducing data to allow valid data record/reproduce from the valid data of high density compact disc to high density compact disc.

Industrial applicibility

It will be apparent to those skilled in the art that and under the prerequisite that does not break away from the spirit or scope of the present invention, each example embodiment to the invention described above to make various modifications and variation.Thus, the present invention is intended to cover various modification of the present invention and variation, as long as they fall in the scope of appended claims and come thereof.

Claims

1. method that is used for the formatted record medium, said method comprises:

Read PAC bunch of one or more physical access control, said PAC bunch comprises:

One identification code in said PAC bunch, said identification code with this PAC bunch be designated as main PAC bunch and

Unknown rule, said unknown rule define for the equipment that can not discern said identification code, the read/write controllability in the zone of said recording medium;

Read said PAC bunch each status information, said status information with said PAC bunch state be not designated as record, can supply to reuse, invalid and effective in one;

Carry out the initialization of said recording medium; And

Change said status information based on said status information and said identification code, wherein said status information depends on that each of said PAC bunch is known or unknown PAC bunch and to each change of said PAC bunch.

2. the method for claim 1 is characterized in that, changes said status information and comprises:

Keep said main PAC bunch state; And

After initialization, will can supply to reuse from effectively changing into except that PAC bunch state said main PAC bunch.

3. the method for claim 1 is characterized in that, classifies all PAC bunch to comprise according to the PAC ID of PAC specific information identification record in corresponding PAC bunch.

4. method at the recording medium identifying recording layer, said method comprises:

The one or more physical access controls of record are PAC bunch on said recording medium, and said PAC bunch comprises:

Write down said PAC bunch each status information, said status information with said PAC bunch state be not designated as record, can supply to reuse, invalid and effective in one;

When the said recording medium of initialization, change said status information based on said status information and said identification code; And

Said PAC bunch each the status information that has changed is recorded on the said recording medium, and wherein said status information depends on that each of said PAC bunch is known or unknown PAC bunch and to each change of said PAC bunch.

5. method as claimed in claim 4 is characterized in that said recording medium is a re-writable recording medium.

6. method as claimed in claim 4 is characterized in that, changes said status information and comprises:

Keep said main PAC bunch state; And

7. method from the recording medium reproducing data, said method comprises:

Read said PAC bunch each status information; Said status information with said PAC bunch state be not designated as record, can supply to reuse, invalid and effective in one; And when the said recording medium of initialization, change said status information based on said status information and said identification code, wherein said status information depends on that each of said PAC bunch is known or unknown PAC bunch and to each change of said PAC bunch.

8. method as claimed in claim 7 is characterized in that said recording medium is a re-writable recording medium.

9. method as claimed in claim 7 is characterized in that, after said initialization, changes said status information, thereby keeps said main PAC bunch state, and will can supply to reuse from effectively changing into except that PAC bunch state said main PAC bunch.

10. one kind is used to record recording medium and/or from the device of recording medium reproducing, said device comprises:

Pick up part, be configured to from said recording medium reading of data; And

Controller is configured to control the said part of picking up:

Read PAC bunch of one or more physical access control from said recording medium, said PAC bunch comprises:

Unknown rule, said unknown rule define for the equipment that can not discern said identification code, the read/write controllability in the zone of said recording medium,

Read said PAC bunch each status information, said status information with said PAC bunch state be not designated as record, can supply to reuse, invalid and effective in one,

Carry out the initialization of said recording medium, and

Change said status information based on said status information and said identification code, wherein said controller is configured to depend on that each of said PAC bunch is known or unknown PAC bunch and each of said PAC bunch is changed said status information.

11. device as claimed in claim 10 is characterized in that, said recording medium is a re-writable recording medium.

12. device as claimed in claim 10 is characterized in that, said controller is configured to keep said main PAC bunch state, and after initialization, will can supply to reuse from effectively changing into except that PAC bunch state said main PAC bunch.