CN100505067C - Recording medium, and method and apparatus for recording and reproducing data on/from recording medium - Google Patents

Abstract

A recording medium, and a method and apparatus for recording and reproducing data to/from the recording medium are disclosed. The recording medium having a data structure for managing a data area of the recording medium includes at least one physical access control (PAC) cluster, the at least one PAC cluster including information for managing logical overwriting to the recording medium, wherein each PAC cluster includes a PAC header, the PAC header being common to each PAC cluster, and a PAC specific information area, the area including information specific to each PAC cluster, wherein the PAC header includes segment information identifying at least one segment area in a user data area of the recording medium.

Description

Recording medium and being used at recording medium identifying recording layer/from the method and apparatus of recording medium reproducing data

Technical field

The present invention relates to high density compact disc, relate in particular to and a kind ofly wherein write down physical access control (PAC) recording of information medium, and be used at this recording medium identifying recording layer/from the method and apparatus of these recording medium reproducing data.

Background technology

CD is widely used in writing down mass data.In these CDs, a kind of new high density optical media (HD-DVD), just under development such as Blu-ray disc (below be called " BD "), this optical medium allows non-volatile recording and the storage to high definition video and voice data.Current, the global standard technical specification conduct that is considered to the Blu-ray disc of HD-DVD technology of future generation significantly surmounts a kind of data storage solution of current DVD, and is just under development together with other digital device.

Therefore, the various draft standard relevant with BD just in preparation and after can rewriteeing Blu-ray disc (BD-RE), are used for write-once Blu-ray disc (BD-WO) and both various draft standard of read-only Blu-ray disc (BD-ROM) are also under development simultaneously.In this standardisation process, as a kind of method that is used to write down and/or reproduce BD-RE/R/ROM, discussed recently a kind of be used for solving attempt new function with BD-RE/R/ROM when being incorporated into redaction by when supporting redaction, lost efficacy physical access control (PAC) method of the problem that causes of the driver of supporting existing version.

Disclosure of the Invention

Therefore, the present invention is directed to a kind of recording medium, and be used for data recording to this recording medium/from the method and apparatus of these recording medium reproducing data, this has eliminated basically because the limitation and the caused one or more problems of shortcoming of prior art.

An object of the present invention is to provide the effective ways of a kind of record physical access control (PAC), the logical overwrite (LOW) in this method control high density compact disc, especially write-once high density compact disc.

Another object of the present invention provides a kind of by using PAC to write down optical recording and transcriber with management data.

The part of other advantage of the present invention, purpose and feature will be set forth in the following description, and a part of one skilled in the relevant art will become apparent after reading over following content, or can know from the practice of the present invention.Purpose of the present invention and other advantage can realize by the structure that particularly points out in written description and appended claims and the accompanying drawing and obtain.

For realizing these purposes and other advantage, and according to the intent of the present invention, as specialize and broadly describe herein, a kind of recording medium with data structure of the data area that is used for managing recording medium comprises at least one physical access control (PAC) bunch, this at least one PAC bunch comprises the information that is used to manage to the logical overwrite of recording medium, wherein each PAC bunch comprises the PAC stem, this PAC stem is common being suitable for for each PAC bunch, an and PAC specific information zone, this zone comprises the information that is exclusively used in each PAC bunch, and wherein this PAC stem comprises the segment information at least one section zone in the user data area of identification record medium.

In another aspect of this invention, a kind of being used for comprises at least one physical access control (PAC) bunch in the presumptive area of reading and recording at recording medium in the recording medium method for recording data, and this at least one PAC bunch comprises the information that is used to manage to the logical overwrite of recording medium; And if the indication of this information allows logical overwrite to recording medium, then to the prerecorded area actuating logic overwrite of this recording medium.

In another aspect of this invention, distributing introducing zone, data field and drawing in the recording medium in zone, a kind of method that is used for writing down physical access control (PAC) information of this recording medium comprises the PAC zone in the introducing zone of verifying recording medium, and in the PAC zone, writing down PAC bunch, this PAC bunch comprises about whether recording medium being allowed the information of logical overwrite.

In still another aspect of the invention, a kind of being used at recording medium identifying recording layer/the comprise storer of physical access control (PAC) information in the store recording medium from the device of recording medium reproducing data, and the PAC_ID in the checking PAC information, and work as the PAC_ID that verified can not be by sign the time, according to being recorded in the microcomputer that unknown PAC rule among the PAC and segment information come the steering logic overwrite.

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

Description of drawings

Providing further understanding of the present invention, and combinedly constitute its part in this application in accompanying drawing is included in, accompanying drawing shows various embodiments of the present invention, and is used to explain principle of the present invention together with the description.In the accompanying drawing:

Fig. 1 shows according to the control of the physical access on the high density compact disc of the present invention (PAC) district;

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

Fig. 3 shows the PAC that writes down according on the high density compact disc of the present invention;

Fig. 4 shows the PAC structure on the high density compact disc according to an embodiment of the invention;

Fig. 5 shows according to the section district on the high density compact disc of the present invention;

The configuration of field that Fig. 6 A and 6B show " unknown PAC rule " according to an embodiment of the invention;

Fig. 7 shows the logical overwrite method according to write-once high density compact disc of the present invention;

Fig. 8 shows the PAC structure on according to another embodiment of the present invention the high density compact disc;

Fig. 9 A and 9B show the configuration of " unknown PAC rule " field according to another embodiment of the present invention;

Figure 10 shows the block diagram according to optical recording of the present invention and/or transcriber.

Realize best mode of the present invention

Now will be in detail with reference to preferred embodiment of the present invention, its example is shown in the drawings.Whenever possible, in institute's drawings attached, will use identical reference number to refer to same or analogous part.In addition, although the term that uses among the present invention is selected from term general known and that use, some term of mentioning in the instructions of the present invention is selected voluntarily by the applicant, in the relevant portion of its detailed meanings instructions herein description is arranged.In addition, require the present invention not only according to employed actual terms, but also understand according to the meaning that each term contained.

Fig. 1 shows according to the PAC district on the high density compact disc of the present invention.With reference to figure 1, from the inner ring to the outer ring, this high density compact disc is by subregion and be appointed as introducing district, data field and draw-out area.For simplicity's sake, the PAC district that distributes to INFO2 is called as the PAC2 district, and the PAC district that distributes to INFO1 is called as the PAC1 district.Record original PAC on one in PAC2 district and the PAC1 district, and another is the backup area that is used to write down the copy of this original PAC.In view of from the inner ring of dish to the direction of writing of outer ring, preferably original PAC is recorded in the PAC2 district, and will backs up PAC and be recorded in the PAC1 district.Have " unknown rule " for solving the PAC district that incident problem provides when old version drive can't detect dish and goes up function from the interpolation of redaction driver.

Defined the predictable operations that is used for console panel on " unknown rule ", that is, and the rule of the control of the linearity replacement from the basic controlling of reading and writing etc. to the defectiveness district, logical overwrite etc.Therefore, a zone that is suitable for " unknown rule " is set on dish, this zone has the section of certain part that is used to define whole dish or coils, and this is with more detailed description in the process afterwards.Thus, define the zone that old version drive can be visited by using " unknown rule ", the CD of redaction has reduced the unnecessary accessing operation of old version drive.

In addition; by using the PAC accessible area that definition is visited for old version drive on the physical region of dish; the data area of having write down user data on it can obtain more strong protection, and outside incorrect visit can obtain protection from dish such as assault etc.Simultaneously, but the write attribute of considering high density compact disc commented on introduces INFO2 district and the INFO1 district that has PAC2 and PAC1 district in the district.

Fig. 2 shows the configuration according to INFO2 district on the high density compact disc of the present invention and INFO1 district.With reference to figure 2, under the situation of BD-RE in high density compact disc, the INFO2 district has 256 bunches, comprises 32 bunches of the PAC2 district, is used for 32 bunches of defect management (DMA) 2 districts of defect management, has write down 32 bunches of buffer zone (BZ) 3 districts of 32 bunches of control data (CD) 2 districts of control information and buffer zone on it.The INFO1 district comprise 32 bunches of the BZ2 district of the buffer area, as 32 bunches of the driver region of the driver region that is used to store the specific information that is exclusively used in driver, be used for 32 bunches of DMA1 district of managing defect, be used for 32 bunches and the BZ1-PACI district that is used as the PAC district in the CD1 district of record controls information.

Under the situation of write-once high density compact disc (BD-WO), the INFO2 district has 256 bunches, comprise 32 bunches PAC2 district, DMA2 district, CD2 district and the BZ3 district of respectively doing for oneself, and the INFO1 district has 256 bunches, comprise 32 bunches BZ2 district, DMA1 district, CD1 district and the BZ1-PACI district of respectively doing for oneself, and 128 bunches of driver region.In addition, under the situation of read-only high density compact disc (BD-R), the INFO2 district has 256 bunches, comprise 32 bunches PAC2 district, CD2 district and the BZ3 district of respectively doing for oneself, and the INFO1 district has 256 bunches, comprises 32 bunches CD1 district and the BZ1-PACI district of respectively doing for oneself.Thus, according to the rewritten characteristic of high density compact disc, PAC of the present invention district is assigned to INFO2 district and the INFO1 district that introduces in the district respectively according to 32 bunches.In 32 bunches PAC district, a PAC has one bunch.With one bunch big small records the structure of a PAC will be described with reference to Figure 3.

Fig. 3 shows the structure according to the PAC that writes down on the high density compact disc of the present invention.The specific information district that comprises heading area and be exclusively used in CD drive with reference to the PAC of 3, one bunches of sizes of figure (32 sectors).The PAC heading area has 384 bytes of first sector of distributing to PAC, be used for record such as various PAC information such as information, and write down the specific information that is exclusively used in CD drive that is called as " known regimes " on another zone in PAC district about " unknown PAC rule " and section.

Detailed structure with the PAC of said structure record will be described with reference to Figure 4.For simplicity's sake, in description of the invention, the specific fields of PAC will be with reference to the accompanying drawing that these fields are shown in greater detail for needs.Fig. 4 shows the structure of the PAC on the high density compact disc according to an embodiment of the invention.With reference to figure 4, as mentioned above, PAC comprise the stem part that is applicable to all PAC (that is, all PAC be suitable for jointly stem), with and on write down the specific information (that is PAC specific information) that is exclusively used in driver the zone.

Stem part and then comprise 32 sections " section 0～section 31 " of " PAC_ID ", " unknown PAC rule ", " entire--disc--flags " of 1 byte of 4 bytes of 4 bytes, " hop count " of 1 byte and 8 bytes of respectively doing for oneself." PAC_ID " is the field that is used to provide current PAC state and identification code, if wherein " PAC_ID " has ' 00 00 00 00 ' position, then the current PAC of " PAC_ID " indication does not use, if " PAC_ID " has ' FF FF FF FE ' position, then " PAC_ID " indication current PAC district is former thereby can not use owing to defective etc., if and " PAC_ID " has ' FF FF FF FF ' position, then " PAC_ID " even indication current PAC district is used in the past, this PAC district also can supply to reuse.

In addition, by by the position record " PAC_ID " of reaching an agreement in advance, such as ' 54 53 54 00 ' position, then " PAC_ID " but determine with acting on whether dish is the code of the dish of current drive free access.More specifically, if current drive is not known so " PAC_ID " of application, thereby determine that this is a current drive because mismatched etc. are former thereby can not understand the situation of current PAC, then ' 54 53 54 00 ' position is as the code that requires the information of reference record on " unknown PAC rule " field.Simultaneously, " entire--disc--flags " among Fig. 4 is used as and informs that PAC is applicable to the field in the whole zone of dish, and " hop count " field is the field of section regional number of the suitable PAC of expression.Can distribute maximum 32 sections to a PAC, and arrive on " section 31 " field about " section 0 " that the information of the section of being distributed is written in 8 bytes of respectively doing for oneself.First PSN and last PSN in the section zone that record distributes to some extent on each in " section 0～section 31 " field.

Section will be come more detailed description with reference to the accompanying drawings.Fig. 5 shows according to the section zone on the high density compact disc of the present invention.With reference to figure 5, as needs, maximum 32 section zones can be arranged on high density compact disc of the present invention then, be used for using PAC to it one by one from " section 0 " beginning.In this case, last PSN of first PSN of reference position by writing the section zone that indication distributes on " section " field in PAC2 and PAC1 district and the end position in the section zone that indication is distributed makes the regional position of the CD drive section of knowing.A plurality of distribute the section in neither one be overlapping, and the starting and ending position bunch the border on specify.

As mentioned above, " unknown PAC rule " field is as the field of the opereating specification of specifying the driver that can't understand current PAC, and this will describe with reference to figure 6A and 6B.The configuration of field that Fig. 6 A and 6B show " unknown PAC rule " according to an embodiment of the invention.With reference to figure 6A,, can determine whether these zones are controlled to a plurality of zones in the CD by using " unknown PAC rule " field.Herein, the zone of control in the expression of " zone " in the table CD." control " zone shows the slave mode of read/write (or recoding/reproduction), and the required figure place of " figure place " expression control.In addition, adding the position of " figure place " to, CD is shown is the double-layer CD with two recoding/reproduction faces.

For example, " PAC district 1,2 " field can indicate the read and write can be controlled in whole PAC district." DMA district 1,2 " field can indicate that write can be controlled in defect management.In addition, can indicate in the defectiveness zone can be controlled to replacing writing of zone for " replacement cluster " field.In addition, " data field " field can indicate the read and write can be controlled in the data field, and " logical overwrite " field can indicate the logical overwrite can be controlled.Clearly, the control of writing be can be applicable to the recordable high density compact disc of physics (BD-RE, BD-R).Similarly, the control of writing in the replacement zone in defectiveness zone be can be applicable to the recordable high density compact disc of physics (BD-RE, BD-R).Therefore, it is evident that description of the invention should understand according to record (or writing) characteristic of high density compact disc.

By using said method, " unknown PAC rule " field can be used for allowing specifying zone of control on CD when using the driver of mismatch version.In addition, the application of said method is not limited only to the driver of mismatch version, but also can be used for selecting to control visit to the specific region in the physical region on the CD (that is, controlling recording/reproduction or control Writing/Reading, these two terms all use) in description of the invention according to the user.Therefore, but in the control of visit, now detailed description is used for controlling to the logical overwrite in the logical overwrite zone of write-once high density compact disc and the method for visit to a plurality of ranges of distribution on the dish.To at first describe the method that is used for the steering logic overwrite, be the method and the method that is used for by using " logical overwrite " field to come the steering logic overwrite that is used to control to the visit in logical overwrite zone then.(will whenever being described at needs with reference to figure 6A, 6B and 7.)

Fig. 7 shows the logical overwrite method according to write-once high density compact disc of the present invention.With reference to figure 7, the write-once high density compact disc is assigned introduces district, inner spare area (ISA), outside spare area (OSA) and draw-out area.In above-mentioned write-once CD (BD-WO), can in the process of using CD, should ask to be updated several times according to records management information to the record of data.Therefore, the introducing zone of CD comprises temporary disk (T-disk) management area (TDMA), has wherein write down the management information that can be updated the CD of several times.TDMA is recorded in the temporary defect list (TDFL).TDFL comprises the defect list that is made of a plurality of defect lists (DFL) clauses and subclauses, has wherein write down such as the actual defectiveness zone or the management information such as positional information in overwrite zone.

In having the CD of said structure, when having the data area of raw readings in the data field, because the characteristic of write-once CD, corresponding zone can not be by physics overwrite (that is, overwrite be unallowed).Yet,, be applied in the method for replacing record in another zone in the data field when ask the request of carrying out when carrying out the write order of writing among the regional a-b (that is, the zone of record raw data) according to the user.Therefore, main frame can be in not considering to coil provides (or making) write order under the situation of the raw readings of the data on the specific region.Thus, the user can be with the write-once CD as CD-RW.These are different with the physics overwrite, and are called as logical overwrite (LOW) method.

More specifically, as shown in Figure 7, when execution is write in regional a-b, because regional a-b is the zone (or the zone of having write down raw data) of having finished record, therefore can not the overwrite data in corresponding regional (that is regional a-b).Yet in this case, data are replaced in the spare area (that is regional c-d) that is recorded in the data field.And therefore, corresponding management information is recorded in as TDFL information among the TDMA of CD, has finished the process of writing thus.In this case, required overwrite management information with redistribute defective (CRD) type continuously and similarly handle.In other words, the regional a-b that has finished physical record is considered to the defectiveness zone, and will be recorded in data among the a-b of defectiveness zone and be replaced and be recorded in the spare area.

Under the situation of CRD type, the management information that is recorded among the TDMA can be expressed (or description) by using two DFL clauses and subclauses.As shown in Figure 7, be recorded in " state 1 " field of one of two clauses and subclauses about the information of replacing record type information as each clauses and subclauses.(for example, ' 0000 ' expression has wherein normally been finished and has been replaced redistributing defective (RAD) type or redistributing the DFL clauses and subclauses of defective (CRD) type continuously of record.And ' even the wherein corresponding zone of 0001 ' expression is that defect area is not specified the DFL clauses and subclauses that can not redistribute defective (NRD) type of replacing the zone yet.) have defective bunch positional information be recorded in " first PSN of defect cluster " field.Herein, positional information is as first physical sector number (PSN) record of respective cluster.

In " state 2 " field, in " state 1 " field, write down information about each DFL entry type and feature.(for example, ' 0000 ' is illustrated in and occurs defective in one bunch, initial (or beginning) of a plurality of continuous defectiveness of ' 0001 ' expression bunch, and the end of a plurality of continuous defectiveness of ' 0010 ' expression bunch.) in addition, wherein the defectiveness zone is replaced the positional information that is recorded in the zone in the spare area and is recorded in " first PSN of replacement cluster " field.Herein, this positional information is come record as first physical sector number (PSN) of respective cluster.In addition, by using another clauses and subclauses, the type information of each DFL clauses and subclauses is expressed (or describe or write) in " state 1 " and " state 2 " field.(more specifically, the end of ' 0010 ' indication a plurality of continuous defectiveness bunch, and replacement cluster is recorded in " state 2 " field.) have defective bunch positional information in first physical sector number (PSN) of last bunch be recorded in " defectiveness bunch first PSN " field.And first PSN of last bunch in the positional information of the replacement posting field in the spare area in defectiveness zone is recorded in " first PSN of replacement cluster " field.

Describe by using the entry format with said structure according to the present invention to come an example of the method for logical overwrite referring now to Fig. 7.The expression executed ' 0000 ' being recorded in " state 1 " field of first DFL clauses and subclauses (DFL clauses and subclauses 1) of overwrite, and be recorded in " defectiveness bunch first PSN " field as ' a ' of first PSN of defectiveness bunch.In addition, represent ' 0001 ' being recorded in " state 2 " field of initial (or beginning) of continuous defectiveness bunch, and ' c ' of first PSN that is recorded in the replacement record position in the defectiveness zone in the spare area as an alternative is recorded in " first PSN of replacement cluster ".

In addition, expression has been finished and has been replaced ' 0000 ' of record and be recorded in " state 1 " field of second DFL clauses and subclauses (DFL clauses and subclauses 2), and is recorded in " defectiveness bunch first PSN " field as ' b ' of first PSN of last bunch in the defectiveness bunch.In addition, represent ' 0010 ' being recorded in " state 2 " field of end of continuous defectiveness bunch, and ' d ' of first PSN of last bunch that is recorded in the replacement record position in the defectiveness zone in the spare area as an alternative is recorded in " first PSN of replacement cluster " field.Therefore, according to the user that can in process after a while, make request, when host requests reproduction regions a-b, after with reference to the above-mentioned information that is recorded among the TDMA, reproduction regions c-d as an alternative.

Above-mentioned according to logical overwrite method of the present invention in, the zone that it is evident that raw readings is the zone of the section of being assigned to zone (for example, section 0).Therefore, as mentioned above, when the overwrite zone section of being assigned to when zone, perhaps when the unknown PAC rule used whole disk area, be recorded among the regional c-d although want the data of physical record in regional a-b to be replaced, main frame will this Data Identification be that overwrite is in regional a-b.Therefore, regional c-d is defined as similarly treating with the content of the access control of being controlled by the PAC in the section of being applied to 0 zone.(herein, in order to describe for simplicity, the regional a-b that has wherein write down data is called as the zone that is used for logical overwrite, and regional c-d is called as the zone of logical overwrite).

More specifically, for example, when the PAC_ID that current drive does not know to be identified, such as when having when the dish of the data of higher driver versions record is loaded into the low driver versions, comprise the zone of logical overwrite as the section zone (or a whole dish) in a zone of having used unknown PAC rule on the dish.Therefore, even the data of logical overwrite physically are recorded in the independent spare area that is different from this section zone, also treat equally with the content of the access control of being controlled by the unknown PAC rule in correspondent section zone in the zone of logical overwrite.

Simultaneously, according to the present invention, when using the driver of mismatch version, the information of definition circumscription logic overwrite is described this point referring now to Fig. 6 A and 6B in the unknown PAC rule of PAC.At first, with reference to figure 6A, write down the information of circumscription logic overwrite by using " logical overwrite " field.Therefore, by distributing 1 position in " logical overwrite " field, allow logical overwrite in ' 1 ' original recorded area that is illustrated on the dish of position, and do not allow logical overwrite in ' 0 ' the expression original recorded area of position.Therefore, when current drive can't identify the PAC_ID of the CD that is inserted, come the steering logic overwrite by reference record this position in " logical overwrite " field of unknown PAC rule.

Fig. 6 B shows the example to two positions of " logical overwrite " field distribution.With reference to figure 6B, two positions in " logical overwrite " field, have been distributed.Position ' 00 ' expression physics overwrite allows, and ' 01 ' be illustrated in that logical overwrite allows in the original recorded area of CD.In addition, position ' 10 ' is illustrated in that logical overwrite is unallowed in the original recorded area of CD, and position ' 11 ' is as keeping the position for use in the future.More specifically, except that the overwrite in the write-once high density compact disc, the example of Fig. 6 B is also considered the physics overwrite in can rewriteeing high density compact disc (BD-RE).

Fig. 8 shows the PAC structure on according to another embodiment of the present invention the high density compact disc.With reference to figure 8, the PAC structure of another embodiment of the present invention comprises the common stem part that is suitable for and the specific information zone of particular drive.Herein, the common stem that is suitable for partly comprises " PAC_ID " field of 4 bytes, " unknown PAC rule " field of 2 bytes, " PAC header label " field of 1 byte, " entire--disc--flags " field of 1 byte, " principal piece collection byte address " field of 2 bytes, " hop count of main centralized definition (N_M_Segs) " field of 2 bytes, " the additional sections collection byte address " field of 2 bytes and " hop count (N_A_Segs) of additional centralized definition " field of 2 bytes.In addition, the specific information zone of particular drive comprises " untapped part among the specific PAC " field.

In above-mentioned PAC structure,, and principal piece collection and additional sections collection have been comprised to " unknown PAC rule " field distribution 2 bytes.More specifically, the additional sections collection keeps for will distribute more section use when regional in addition except that 32 section zones.For this reason, write down principal piece number, and its reference position is recorded in " principal piece collection byte address " field by " hop count of main centralized definition (N_M_Segs) " Field Definition.In other words, the information that is recorded in " principal piece collection byte address " field is taken on the pointer in defined principal piece zone.In addition, write down additional hop count, and its reference position is recorded in " additional sections collection byte address " field by " hop count (N_A_Segs) of additional centralized definition " Field Definition.In the PAC zone by one bunch big small records, additional segment area comprises the not use part among the specific PAC, and it is dispensed in the N_A_Segs zone.When using above-mentioned PAC structure, except that 32 section zones, also can answer the request management additional segment area.

As mentioned above, " unknown PAC rule " field of 2 bytes is as the field of the opereating specification of specifying the driver that can't understand current PAC, and this will describe in detail with reference to figure 9A and 9B.More specifically, Fig. 9 A and 9B show the configuration of according to another embodiment of the present invention " unknown PAC rule ".At first, with reference to figure 9A, " unknown PAC rule " field indication is controlled read/write on the PAC zone, is controlled reading on the PAC zone/overwrite and by using 1 byte to control detailed content according to logical overwrite of the present invention by using 1 byte by using 1 byte.

More specifically, logical overwrite is distributed 1 position, and position ' a 1 ' indication logical overwrite allows, and ' a 0 ' presentation logic overwrite is unallowed.In addition, with reference to figure 9B, " unknown PAC rule " field is to 2 positions of " logical overwrite " field distribution.Herein, position ' 00 ' expression physics overwrite allows, and position ' 01 ' indication logical overwrite allows.In addition, position ' 10 ' presentation logic overwrite is unallowed, and position ' 11 ' indication keeps the reservation position of using in the future.Above-mentioned example also is applicable to and can rewrites high density compact disc (BD-RE).

Figure 10 shows the block diagram according to optical recording of the present invention and/or transcriber.With reference to Figure 10, optical recording and/or transcriber 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.(herein, recording/reproducing apparatus 10 is commonly called " CD drive ", and these two terms all will use in description of the invention.)

More specifically, main frame 20 provides the specific region of CD writing of writing/reproduce from the specific region of CD or reproduces order 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 order of main frame 20.Recording/reproducing apparatus 10 comprises and is used for carrying out the interface unit 12 that the exchange etc. such as data and order is communicated by letter with main frame 20, be used for directly data being write CD/from the pickup unit 11 of CD reading of data, be used for from pickup unit 11 received signals, and the signal that the signal value that recovers expectation maybe will write is modulated into signal that can be written into CD and the data processor of transmitting, be used for controlling pickup unit 11 and read signal from CD exactly, or signal is write the servo unit 11 on the CD exactly, be used for interim various information and the memory of data 15 that comprises management information that store, and the microcomputer 16 that is used for the various piece of controlling recording/reproducer 10.

Use description to now by using this optical recording and/or transcriber that PAC is recorded in method on the high density writable optical disc.After CD being inserted in optical recording and/or the transcriber, from CD, read all management information, and it is stored in the storer of recording/reproducing apparatus 10, use during for recording/reproducing optical disk.Herein, if user expectation is write the specific region of CD, then main frame is thought write order with this expectation of user, and provides about the information of writing position of expectation and one group of data that will write to recording/reproducing apparatus 10.

Then, microcomputer 16 in the recording/reproducing apparatus 10 receives this write order, determine in the management information from be stored in storer 15 whether the zone that main frame 20 expectations write in the CD is the defectiveness zone, and according to from the write order of main frame 20 to not being that the zone in defectiveness zone is carried out data and write.In this case, if the new feature that definite recording/reproducing apparatus that writing of whole dish or specific region comprised correlation technique is not equipped with, thereby cause the recording/reproducing apparatus of correlation technique to understand, if perhaps such as to the specific region record of dish/from the functions such as specific region reproduction of CD, then write in the PAC district on the dish as " unknown PAC rule " by the control information that the microcomputer 16 of recording/reproducing apparatus 10 should the zone according to requirement that the user asked restriction for intention.

At this moment, when the PAC that writes down as mentioned above is when being used for the control information of whole disk area, write down " entire--disc--flags ".And, when having distributed as at least one section zone in the constant zone in the dish when controlling the visit to whole zone, the number in the section zone distributed is recorded in " hop count " field, and will be recorded in " data field " field of " unknown PAC rule " field about the control information that whether allows to visit.In addition, in the time will carrying out independent control to each of section zone, with the content record of the control in correspondent section zone and positional information in " section " field.More specifically, when main frame 20 is wished record controls to the content of the logical overwrite of mismatch driver versions, with the control corresponding content record in " logical overwrite " field of " unknown PAC rule " field.Herein, PAC is recorded in the INFO2 district in PAC2 district according to one bunch size, and the copy version of PAC and PAC (or copy PAC) is recorded in the INFO1 district in PAC1 district incense part and uses.

Therefore, microcomputer 16 provides on it with the positional information and the data in the zone or the PAC district of data to servo unit 14 and data processor 13, finishes so that write by the desired locations place of pickup unit 11 on CD.Simultaneously, use description to write down and/or reproduce the method that has write the high density compact disc of PAC information by said method.After CD is inserted into optical recording and/or transcriber, from CD, read all management information, and it is stored in the storer of record and reproducer 15, use during for record and reproduction CD.Information in the storer 10 comprises the positional information in the various districts that contain the PAC district on the dish.Whether then, check the PAC_ID field of PAC, be intelligible PAC_ID with the PAC_ID of the PAC that verifies this PAC district.As the checking result, if the PAC_ID that is write is intelligible, thereby determine that this is that the record that has write data on dish has the situation of the version identical with the version of current record and reproducer with reproducer, or do not have the situation of independent writing/reproduce restriction, then according to command execution recoding/reproduction from main frame 20.

The understanding failure of the code of being write on to PAC_ID, thereby determine that this is because to have a version different with the version of current record and reproducer etc. such as the record that writes data on dish and reproducer former thereby when having the situation of restriction, then, come executive logging/reproduction according to order from main frame with reference to the recoding/reproduction restricted area on the dish of being write on " unknown PAC rule " and " section ".In this case, to logical overwrite and wherein logical overwrite the regional executivecontrol function of data.For this reason, microcomputer provides positional information and data according to the order of main frame to servo unit 14 and data processor 13, so that recoding/reproduction is finished by the desired locations place of pickup unit 11 on CD.

This is used for data are recorded in recording medium/have the following advantages from the method and apparatus of recording medium reproducing data.By using the dish accessible area of PAC definition prior art version drive, allow more strong protection, to break off incorrect external reference from hacker etc. to the data area that records user data on it.Equally, the PAC in whole data field or section zone allows valid data record/reproduce from the valid data of high density compact disc to high density compact disc on the management dish.At last, by proposing to be used for the method and the method that is used to control to the visit in logical overwrite zone of steering logic overwrite, high density compact disc can write down and reproduce data effectively.

Industrial applicibility

Those skilled in the art can be clear, can make various modifications and change to the present invention under the prerequisite that does not break away from the spirit or scope of the present invention.Thus, the present invention is intended to cover all modifications of the present invention and variation, as long as they fall in the scope of appended claims and equivalence techniques scheme thereof.

Claims (8)

1. one kind is used in the recording medium method for recording data, and described method comprises:

At least one physical access control of reading and recording in the presumptive area of described recording medium bunch, described at least one physical access control bunch comprise the information that is used to manage to the logical overwrite of described recording medium; And

When the indication of described information allows logical overwrite to described recording medium, then to the prerecorded area actuating logic overwrite of described recording medium.

2. the method for claim 1 is characterized in that, described physical access is controlled bunch introducing that is recorded in described recording medium zone and drawn at least one interior zone of zone.

3. the method for claim 1 is characterized in that, described physical access control bunch comprises " unknown physics access control rule " field, and described field control can't be understood the opereating specification of the register of current physical access control.

4. method as claimed in claim 3 is characterized in that, described " unknown physics access control rule " field comprises " logical overwrite " field that is used for the steering logic overwrite.

5. method as claimed in claim 4 is characterized in that, described " logical overwrite " field is assigned with 1 position to indicate whether to allow logical overwrite.

6. method as claimed in claim 4 is characterized in that, described " logical overwrite " field is assigned with 2 positions to indicate whether to allow physics overwrite and logical overwrite.

7. method that in having distributed the recording medium of introducing zone, data field and drawing the zone, is used to write down the physical access control information of described recording medium, described method comprises:

Verify the physical access control area in the introducing zone of described recording medium; And

Record physical access control bunch in described physical access control area, described physical access control bunch comprises about whether described recording medium being allowed the information of logical overwrite.

8. one kind is used in that the recording medium identifying recording layer/from the device of recording medium reproducing data, described device comprises:

Store the storer of the physical access control information in the described recording medium; And

Verify the physical access control ID in the described physical access control information, and work as the physical access control ID that verified can not be by sign the time, according to being recorded in the microcomputer that unknown physics access control rule in the described physical access control and segment information come the steering logic overwrite.

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