CN100463056C - Record reading method of high-density compact disk - Google Patents
Record reading method of high-density compact disk Download PDFInfo
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- CN100463056C CN100463056C CNB2005101124591A CN200510112459A CN100463056C CN 100463056 C CN100463056 C CN 100463056C CN B2005101124591 A CNB2005101124591 A CN B2005101124591A CN 200510112459 A CN200510112459 A CN 200510112459A CN 100463056 C CN100463056 C CN 100463056C
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Abstract
The invention relates to a record reading method of high-density disc, specially relates to the data record reading method of high-density disc such as blue disc with physical access control (PAC), for the high-density disc which is divided into lead-in area, backup area, user data area, lead-out area in the invention, said high-density disc possesses at least one recording for said PAC of data recording information, in area of disc managed by said PAC unknown rules, if record reading control content is conflict with record control content in backup area, data area (section is defined, it is a section ), one control content is first to form record reading of high-density disc. The invention can accomplish the record reading of high-density disc effectively.
Description
Technical field
The present invention relates to high density compact disc, the high density compact disc that relates in particular to Blu-ray Disc (Blue-ray Disc) and so on utilizes the data recording read method of PAC (access control of physical access control physics is hereinafter to be referred as PAC).
Background technology
As optical recording media, the CD that can write down Large Volume Data is extensive use of.Wherein, develop recently can the non-volatile recording high image quality video data and the voice data of high tone quality, and new high-density optic recording medium (HD-DVD) that store are as Blu-ray Disc (Blue-ray Disc is hereinafter to be referred as BD).
Blu-ray Disc (BD) as HD-DVD technology of future generation is considerably beyond the optical recording solution of future generation that has the DVD data volume now, and recently with other digital equipment, its international standard also forms gradually.
Relevant therewith, preparing the relevant various standard schemes of above-mentioned Blu-ray Disc (BD), behind the Blu-ray Disc that can repeatedly write down (BD-RE), but the Blu-ray Disc (BD-WO) of single record and the various standard schemes of finishing the special-purpose Blu-ray Disc of reading of record (BD-ROM) are also come out of the stove gradually.
Among such standardization incubation period, recently, in the time of the new function of above-mentioned Blu-ray Disc will being incorporated into redaction (version), for solution supports that the driver of version (legacy drive) can't be supported the problem that new function takes place before this, PAC (access control of Physical Access Control physics) method has been proposed, discussing and utilizing such PAC method, the data recording of whole CD or specific area is read, and (Read/Write) controls the several different methods that is formed on CD physical areas (Physical area).
Summary of the invention
The present invention proposes for addressing the above problem just, and its purpose is to provide the PAC method on the high density compact disc and utilizes the record reading method of a kind of high density compact disc that the data recording of the method reads
Other purpose of the present invention is, the effective defect management method that provides the unknown rule (unknown rule) with above-mentioned PAC to carry out.
To achieve these goals, the record reading method of the high density compact disc of one embodiment of the invention, for dividing into Lead-In Area, backup area, user data area, the high density compact disc that leading-out zone distributes, described record reading method comprises: form the physics access control (PAC) that the record of more than one at least record above-specified high density data of optical disk reads information at high density compact disc, in field of optical discs with above-mentioned PAC " unknown rule (unknown rule) " management, if user data area is (behind the definition fragment field, be the fragment field) record when reading control content and conflicting mutually with the record controls content of backup area, making wherein, side's control content occupies preferentially.
If in above-mentioned control content, the control content of user data area is occupied preferentially, but just the pressure of the record controls content of above-mentioned backup area is set to record.
If in above-mentioned control content, the control content of user data area occupies preferentially, just is set to can not control backup area with above-mentioned " unknown rule ".
To achieve these goals, the record reading method of the high density compact disc of another embodiment of the present invention, for dividing into Lead-In Area, backup area, user data area, the high density compact disc that leading-out zone distributes, described record reading method comprises: the PAC that reads information at the record of the more than one at least record above-specified high density data of optical disk of high density compact disc formation, in field of optical discs with above-mentioned PAC " unknown rule " management, if user data area is (behind the definition fragment field, be the fragment field) record when reading control content and conflicting mutually with the record controls content of backup area, above-mentioned control content is suitable for ＂ or ＂ function.
Effect of the present invention:
By above-mentioned explanation, the high density compact disc defect management method of the record reading method of high density compact disc of the present invention prompting " unknown rule (unknownrule) " where applicable reads with this record that can effectively finish high density compact disc.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
Description of drawings
Fig. 1 a and Fig. 1 b are the PAC district synoptic diagram of high density compact disc of the present invention.
Fig. 2 is the formation synoptic diagram in information 2 fields and information 1 field of high density compact disc of the present invention.
Fig. 3 is the structural representation that the PAC of high density compact disc of the present invention is recorded in CD.
Fig. 4 is the structural representation of high density compact disc PAC of the present invention.
Fig. 5 is the synoptic diagram in high density compact disc fragment of the present invention field.
Fig. 6 is the formation synoptic diagram of the present invention " Unknown PAC Rule " field.
Fig. 7 is the concept map of the replacement recording method of the defect area of " unknown rule " according to the present invention.
Fig. 8 is the synoptic diagram of one embodiment of the invention " unknown rule " defect management method.
Fig. 9 a and Fig. 9 b are the formation synoptic diagram of another embodiment of the present invention " Unknown PAC Rule ".
Figure 10 is the formation integration map of optical recording and reading apparatus of the present invention.
Embodiment
Embodiment to the record reading method of high density compact disc of the present invention is elaborated below with reference to accompanying drawings.Simultaneously, the selection of terms that the present invention uses the term of present commonplace use, but according to the appearance of new technology, the present invention has also arbitrarily used the patent applicant to think will partly offer some clarification on the meaning of its term in related description to this by optimal term.Therefore, understand when of the present invention, should be not being that the simpler term term meaning is nominally understood the present invention.
Relevant therewith, the meaning of " PAC (Physical Access Control) physics access control " that the present invention uses is in the CD physical areas, read with data recording and to be controlled to be purpose, be recorded in the additional information (Additional Information) on the CD whole CD (Entire disc) or specific fragment (Segment).At this instructions, easy on illustrating, called after " PAC ", " PAC information " or " PAC control information ", three all is to use with equivalent.
In addition, with the field of optical discs called after " PAC district (PAC Zone) " simply of the above-mentioned PAC of record, above-mentioned PAC is to be unit record in CD PAC district with bunch (Cluster), will write down bunch called after " PAC bunch " of above-mentioned PAC.
In addition, PAC of the present invention is in order to discern the driver of the specific PAC-ID that comprises existing version driver (legacy drive), have restriction the data recording of whole CD or specific area is read " unknown rule (the unknown rule) " of (Read/Write), will be suitable for the simple called after of PAC " unknown PAC (Unknown PAC) " of above-mentioned " unknown rule (unknownrule) ".Because of discerning above-mentioned specific PAC identifier (PAC-ID), be recorded in the suitable simple called after of PAC " known PAC (Known PAC) " of what is called " known regimes (known rule) "-" the intrinsic customizing messages of PAC (PAC specific information) " of PAC.
Below with reference to accompanying drawings such PAC is recorded in the form in PAC district and utilizes the record reading method of this form and device thereof to describe.
Fig. 1 a and Fig. 1 b are the PAC district synoptic diagram of high density compact disc of the present invention.
At first, as shown in Figure 1a, in high density compact disc, individual layer (Single layer) CD with a recording layer is roughly divided into Lead-In Area (Lead-in Zone), data field (DataZone), leading-out zone (Lead-out Zone) distribution from the interior circumferential peripheral direction of CD.There is inside backup area (the Inner Spare Area that is intended to replace defect area above-mentioned data field (Data Zone), ISA) and external backup district (Outer Spare Area, OSA) be present in inner periphery and the outer periphery in the data field respectively, between exist and be intended to the user data area (User Data Area) of user data.
Distinguish information 2 (INFO2) district and information 1 (INFO 1) district that the various management information of recording disk are arranged in the above-mentioned Lead-In Area (Lead-in Zone), above-mentioned information 2 districts and information 1 district are present in PAC of the present invention district respectively.
At this moment, the PAC district that is distributed in above-mentioned information 2 districts simply is called the PAC2 district, the PAC district that is distributed in above-mentioned information 1 district is called the PAC1 district.The PAC of above-mentioned PAC1 district and PAC2 district record be at unexpected voltage descend (power-down) and so on situation and write down identical information, the PAC of record at first upgrades (update) in the PAC1 district of above-mentioned information 1, and its duplicate is recorded in the PAC2 district of information 2 then.
In addition, Fu Jia Fig. 1 b is bilayer (Dual layer) the compact disk structure synoptic diagram with 2 recording layers.Shown in Fig. 1 b, double-layer CD possesses the 1st recording layer (LO:Layer 0) and the 2nd recording layer (L1:Layer1) respectively, each recording layer is divided into Lead-In Area/leading-out zone (also claiming inner area (Inner Zone)) (Lead-in/out Zone), data field (Data Area), outside area (Outer Zone0,1) distribution.In addition, in the data field of each recording layer (Data Zone), divide into backup area (ISAO, ISA1, ISAO, ISA1) and user data area (User Data Area) and distribute.
Have information 2 (INFO 2) district and information 1 (INFO 1) district that divide into the various management information of recording disk to distribute in above-mentioned Lead-In Area (inner area 0) and the leading-out zone (inner area 1), PAC of the present invention district is present in above-mentioned each information 2 districts and information 1 district respectively.
At this moment, the same with single-layer optical disc, the PAC district that is distributed in information 2 districts of above-mentioned Lead-In Area and leading-out zone simply is called the PAC2 district, the PAC district that is distributed in information 1 district of above-mentioned Lead-In Area and leading-out zone simply is called the PAC1 district.The PAC that is recorded in the PAC2 district in the PAC1 district of above-mentioned information 1 and information 2 districts all writes down identical information, and the PAC of the PAC1 district record of information 1 upgrades (update) earlier, and its duplicate is recorded in the PAC2 district of information 2 then.
At this moment, shown in Fig. 1 b, be example with above-mentioned double-layer CD, above-mentioned PAC1 district and PAC2 district not only exist at Lead-In Area, still exist at leading-out zone, therefore than the PAC district of single-layer optical disc, the field with 2 times of sizes.
Above-mentioned PAC district is the field of reading (Read/Write) control at the data recording of whole CD or specific area as mentioned above, has " unknownrule " that restriction driver (drive) record reads for this reason.
On the field of optical discs of above-mentioned " unknown rule (to call unknown rule in the following text) " management, there are DMA (DiscManagement Area defect management) district and backup area (Spare Area), user data area (User DataArea), especially concerning above-mentioned user data area, can distinguish and distribute the certain field-fragment of CD (Segment) (will carry out being described in more detail in the back) that is suitable for above-mentioned " unknown rule " above-mentioned fragment.
Promptly, utilize the above-mentioned measurable action of enumerating the field of " unknown rule " definition, as the linearity from record the reads elemental motion of etc.ing to defect area replace (Linear Replacement) but, the logic that is intended to control the CD (BD-WO) of single record covers the rule (rule) that writes down (Logical Overwrite).
Therefore; " the unknown rule " of PAC by above-mentioned PAC district record; can solve the problem that function that the redaction driver appends can't take place in the identification of existing version driver (ex, unnecessary access etc.); but the physical field of access field on CD on the CD defined; with the field of these strong more (robust) protection record data, and cut off the outside illegal invasion (will be explained below the more detailed functions of this PAC) of network intrusions (hacking) and so on.
In addition, but below according to the recording feature of high density compact disc, illustrate have above-mentioned PAC2 district and PAC1 district Lead-In Area (during double-layer CD, comprising leading-out zone) in information 2 districts and information 1 district.
Fig. 2 is the formation synoptic diagram in information 2 districts and information 1 district of high density compact disc of the present invention.
As shown in Figure 2, in high density compact disc, with the high density compact disc (BD-RE) that can repeatedly write down is example, information 2 districts comprise PAC2 district with 32 bunches of sizes of the present invention, at BZ (Buffer Zone) 3 districts in 32 bunches CD (Control Data), 2 districts of 32 bunches DMA (Defect Management Area), 2 districts of defect management, record controls information, buffer zone-32 bunch, with 256 bunches of formations.
In addition, information 1 district be with buffer zone-32 bunch BZ (Buffer Zone) 2 districts, be that Drive Area, defect management-32 bunch DMA1 district of the field of drivers-32 bunch of the intrinsic special information of storage drive, 32 bunches CD1 district of record controls information, PAC1 of the present invention district constitute.
In addition, but the high density compact disc (BD-R) with the single record is an example, information 2 districts comprise PAC2 district, DMA2 district, CD2 district, the BZ3 district that is respectively 32 bunches, with 256 bunches of formations, information 1 district is the driving field that comprises the BZ2 district that is respectively 32 bunches, DMA1 district, CD1 district, PAC1 district and 128 bunches, with 256 bunches of formations.
In addition, be example to read special-purpose high density compact disc (BD-ROM), information 2 districts comprise PAC2 district, CD2 district, the BZ3 district that is respectively 32 bunches, with 256 bunches of formations, information 1 district comprises CD1 district, the PAC1 district that is respectively 32 bunches, with 256 bunches of formations.
Like this, but PAC of the present invention district is assigned as and makes information 2 districts and information 1 district have 32 bunches size respectively according to the recording feature of high density compact disc.
Above-mentioned PAC district with 32 bunches (or 64 bunches) size is assigned as and makes a PAC have 1 bunch of size, and above-mentioned PAC with 1 bunch of size can a plurality ofly exist as required.The above-mentioned PAC of 3 explanations is with the form of 1 bunch of big small records below with reference to accompanying drawings.
Fig. 3 is the structural representation that the PAC of high density compact disc of the present invention is recorded in CD.
As shown in Figure 3, having big or small PAC of 1 bunch (32 frames (frame is with the identical notion in sector (sector))) is that intrinsic customizing messages (SpecificInformation) field of showing title (Header) field and CD drive greatly constitutes.
At this moment, in above-mentioned PAC title domain, the 1st frame of PAC is assigned 384 bytes, writing down various PAC information such as " unknownPAC rule " and fragment relevant information, in all the other fields, can write down what is called " knownrule "-intrinsic customizing messages of PAC (PAC Specific Information) and constitute.
Below with reference to the more detailed structure of Fig. 4 explanation with the above-mentioned PAC of such form record.Simple on illustrating to the specific fields that is described in more detail of the above-mentioned PAC of needs, describes with reference to the accompanying drawing of expression relevant field.
Fig. 4 is the structural representation of the PAC of high density compact disc of the present invention.
As shown in Figure 4, PAC of the present invention shows title (Header) greatly and partly distinguishes in the field of the intrinsic customizing messages (Specific Information) of (till 384 bytes of first frame) and record PAC as mentioned above.
Above-mentioned title division comprises that again ＂ PAC_ID ＂, the ＂ PAC Update Count ＂ of 4 bytes, ＂ Unknown PAC Rules ＂, the ＂ Entire_Disc_Flag ＂ of 1 byte of 4 bytes, the ＂ Number ofSegments ＂ of 1 byte, totally 32 ＂ fragments (Segment_0 Segment_31) ＂ of each 8 byte of 4 bytes constitute.
Above-mentioned ＂ PAC_ID ＂ provides the field (field) of existing PAC state and cognizance code, as with ' 00 00 0000h ' record the time, just shows also not use of present PAC; If during with ' FF FF FF FFh ' record, just show that present PAC district once used, but the code that can reuse.
In addition, wait the bit record that has been provided with, but use as the code whether present driver of affirmation belongs to the dish of free access with this with ' 54 53 54 00h '.That is, if now driver can't be discerned " PAC-ID " of above-mentioned input, be that the reason of different editions and so on is judged as and can't discerns present PAC just with this, will be as the code use that makes it with reference to " unknown PAC rule " field record information.
In addition, above-mentioned " PAC Update Count " field is to record 0 as the field of expression PAC update times at first, but when carrying out the record again (re-written) of PAC, will increase by one at every turn.
In addition, above-mentioned " Entire Disc Flag " field is as the expression field whether (Re-initialization) allow that reinitializes, be assigned to one of 1 byte (8 bit) bit-b0 of above-mentioned " Entire Disc Flag " field as use, if above-mentioned b0 is 0, allow to reinitialize with regard to expression; If above-mentioned b0 is 1, do not allow to reinitialize with regard to expression.Certainly, such recording feature that is applicable to high density compact disc that reinitializes belongs to the situation that can repeatedly write down (DB-RE).
In addition, above-mentioned " number of Segments " field is the field that expression is suitable for the fragment field number of PAC.Above-mentioned fragment can be assigned as maximum 32 within a PAC, the fragment position relevant information records of above-mentioned distribution arrives field between " Segment-31 " at " Segment-0 " that be 8 bits.Above-mentioned " Segment_0 31 " field is in each originally the 1st bunch the 1st physical sector number (PSN:PhysicalSector Number) in 4 byte records fragment fields, last bunch the last physical sector number in recorded segment field on 4 bytes afterwards.
Fig. 5 is the synoptic diagram in high density compact disc fragment of the present invention field.
As shown in Figure 5, at high density compact disc, the fragment field that is suitable for PAC is as required, can be assigned to maximum 32 successively from " Segment0 " field.Promptly the fragment with a PAC management increases gradually from " Segment 0 " beginning, can distribute 32 at most.When a plurality of PAC exist, can not cross 32 (CD is up to 32 fragment fields) with the whole quantity in the fragment field of each PAC management yet.
At this moment, the starting position, fragment field of above-mentioned distribution is as the 1st bunch the 1st physical sector number (Thefirst PSN of the first Cluster), the rearmost position is as last bunch last physical sector number (Thefirst PSN of the first Cluster), be recorded in " fragment (Segment) " field, make CD drive can grasp position, fragment field.
At this moment, distributed by PAC and the fragment field of management can overlapped (overlap), beginning and rearmost position are assigned to the field, boundary line between bunch (Cluster).
Simultaneously, " Unknown PAC Rule " field of Fig. 4 is used as the field of specifying the driver actuating range that can't discern existing PAC as mentioned above, with reference to Fig. 6 these is described.
Fig. 6 is the formation synoptic diagram of the present invention " unknown PAC rule (Unknown PAC Rule) " field.
As shown in Figure 6, by " the Unknown PAC Rule " field with 4 bytes (32 bit) performances, the may command that can define a plurality of fields in the CD whether.At this moment, the may command field of " zone (Area) " expression CD in the form, " bit (Bits) " represent control bit, " control types (Control type) " represents the control types of record/read etc.
If by these, the may command field of above-mentioned " Unknown PAC Rule " field is described, at first, can represent " DMA district (DMA Zones does not comprise DDS (DiscDefinition Structure)) " the relevant record controls in the information of can carrying out 1,2,3,4 fields; Expression can be carried out record controls to " backup area (the Spare Areas) " in data field (Data Zones); Expression to information 1,2,3,4 fields " control data zone (CD, Control Data Zones) " can write down and read control; Control can be write down and read to expression to " user data area (the User Data Area) " of data field; Control can be write down and read to expression to " PAC bunch (cluster) " in information 1,2 fields.
At this moment, at record/read in the control content, only expression can be carried out one of them control and is meant the control that can not carry out the opposing party.That is, be example with above-mentioned " backup area (Spare Areas) " situation, for the situation of only representing the record controls content, being meant can be with unknown rule control reading above-mentioned " backup area (SpareAreas) ".
In addition, to all the other fields except above-mentioned " PAC bunch (cluster) ", the rule (rule) of example down will be suitable for.
That is, for the situation (ex, Bits=b3, b5, b6, b7...) of above-mentioned may command type (cont roltype) for record (write), if the bit that distributes be set to 0 ', just represent to carry out the record of association area; If the bit that distributes is set to ' 1 ', just represent to carry out the record of association area.
In addition, for above-mentioned may command type for reading the situation (ex, Bits=b2, b4...) of (read), if the bit that distributes be set to ' 0 ', just represent to carry out reading of association area; If the bit that distributes is set to 1 ', just represent to carry out reading of association area.
Simultaneously, for " PAC bunch " field, the may command type is record when (write) (Bits=b1), if the bit that distributes be set to ' 0 ', just represent to carry out the covering record of present PAC.In addition, if the bit that distributes be set to ' 1 ', just represent to cover record.
Concerning above-mentioned " PAC bunch " field, above-mentioned may command type (Bits=b0) when reading (read), if the bit that distributes be ' 0 ', can read with regard to representing, present bunch of content can also be sent to driver outside (ex, main frame).In addition, if the bit that distributes is set to ' 1 ', just expression can not be sent to the driver outside with present PAC bunch content except the 1st 384 bytes (so-called PAC title division) of the 1st Frame (so-called " knownrule "), this just can be provided with in the time will controlling CD with " unknown rule ".
At this moment, (User Data Area) is example with above-mentioned user data area, if aforesaid CD specific area-fragment field obtains definition, just as expression to be not whole user data area above-mentioned fragment field record and read may command whether field use.
To " the unknown rule " of such definition, when the record controls content of above-mentioned backup area and user data area or fragment field obtain defining, may there be the conflicting situation of record controls content to the fragment field.
That is, when writing down or reading the data in above-mentioned user data area or fragment field, if find defect cluster (defective cluster), just with above-mentioned defect cluster will () record the data replacement be recorded in backup area.When replacing writing down like this, the record controls content of backup area setting and the conflicting situation of record controls content that user data area (fragment field) is provided with may take place.These are described below with reference to accompanying drawings.
Fig. 7 carries out record/when reading with the user data area of the present invention " unknown rule " management or fragment field, is the concept map of explanation to the replacement recording method that can detect defect area.
As shown in Figure 7, when user data area (User Data Area) or fragment field obtain defining, if record/when reading the fragment field, detect defect area (defective area), just with above-mentioned defect area will () data of record replace being recorded in backup area (Spare Area, ISA or OSA).
As mentioned above, if replace being recorded in backup area, just the positional information with above-mentioned replacement record is recorded in CD DMA (Defect Management Area) district as DFL (Defect List defect list) clauses and subclauses (entry).Above-mentioned DMA district is the field that is present in CD managing field-Lead-In Area (Lead-In Zone) and leading-out zone (Lead-OutZone).
In above-mentioned DFL clauses and subclauses, bunch positional information of the positional information of detected defect cluster and replacement record is as physical sector number (Physical Sector Number) record, if with reference to Fig. 7 explanation, record the 1st the physical sector number a of the defect cluster A that user data area detects, replace the backup area of the data that the above-mentioned defect cluster A of record will () record to replace the 1st physical sector number-d of bunch D as the DFL entry record.
At this moment, in above-mentioned DFL clauses and subclauses, the type relevant information that replaces record like this is as " state (status) " field information record simultaneously.That is, " status 1 " field record of Fig. 7 ' 0000 ' bit is the bit that the display defect district normally replaces record, " status 2 " field record ' 0000 ' bit is to show the also not use of " status 2 " field.Therefore, replaced the type that writes down according to defect area, it is a matter of course that the bit of above-mentioned " status " field changes.
Simultaneously, this defect management method is that to belong to repeatedly record case with the video disc recording characteristic be example, if but the recording characteristic of CD just belongs to the CD of single record on physical property, with above-mentioned DFL entry record after the temporary defect management area (TDMA:Temporary Defect Management Area) of CD, when video disc recording finishes (Disc Closing), move to DMA district record.
Like this, when the data that will () be recorded in defect area replace being recorded in backup area, even because of " unknown rule " of the present invention may carry out record/read to user data area (or fragment field), find defect cluster, also belong to can not recorded content the time, situation about writing down may take place to replace in the record controls content of above-mentioned backup area.Concerning this situation, need a kind of disposal route, this disposal route is described below with reference to accompanying drawings.
Fig. 8 is the defect management method synoptic diagram that is suitable for " the unknown rule " of one embodiment of the invention.Especially represented with the control content between backup area in the field of optical discs of " unknown rule " management and the user data area (after the definition of fragment field, being the fragment field).
Shown in the situation 1 (case 1) of Fig. 8, because of record (write) control bit of backup area be set to ' 0 ', can carry out record to above-mentioned backup area, because of user data area (after the fragment field definition, be the fragment field) record (write) or read (read) control bit and be set to ' 0 ', can carry out the record of above-mentioned user data area (fragment field) or when reading, the replacement record of defect area is without any problem.
But shown in the situation 2 (case 2) of Fig. 8, record (write) control bit of user data area (fragment field) is set to ' 0 ', even during reading of data, send defect area, also record (write) control bit because of backup area be set to ' 1 ', can not carry out the replacement record of defect area; Or shown in the situation 3 (case 3) of Fig. 8, record (write) control bit of user data area (fragment field) is set to 0 ', even during record data, find defect area, also because of record (write) control bit of backup area be set to 1 ', the situations such as replacement record that can not carry out defect area might exist.
In addition, though do not do diagram, but all control content of above-mentioned backup area and user data area (fragment field) are set to ' 1 ' time, or it is irrelevant with the record controls content of above-mentioned backup area, the record of above-mentioned user data area (fragment field)/read control content all to be set to ' 1 ' time, the detection of defect area itself are impossible carry out.
The explanation according to the present invention record (reading) restriction between this backup area and user data area (fragment field) is provided with, makes it make action with ＂ or ＂ function (OR Function).That is,, just can not carry out the replacement record of defect area if in above-mentioned backup area or the user data area (fragment field) either party is provided with record (reading) and limits.
Therefore, the record of backup area is restricted, and the record of user data area (fragment field) or read under the situation that allows to carry out can not carry out the replacement record of defect area with ＂ or ＂ function.Therefore, in this case, the record controls bit that above-mentioned backup area is provided with replaces the bit of record to use as the control backup area.
So concerning this situation, defect management can not replace record with backup area, the method that only the relevant positional information of above-mentioned defect area is write down as DFL information will be used.
Simultaneously, according to a further embodiment of the invention, use is set to the record controls content of above-mentioned backup area and the record of user data area (fragment field)/read one of control content to occupy preferential method.
That is, right of priority is placed in the record controls of backup area in the control content either party of the record of user data area (fragment field) perhaps/read, makes it finish the replacement record of defect area according to side's control content with right of priority.
Therefore, when backup area has right of priority,, form the replacement record of defect area, but, the replacement record of defect area is carried out if above-mentioned backup area belongs to record type according to the record controls content of above-mentioned backup area.User data area (fragment field) is when having right of priority, if the record of user data area (fragment field)/read and can carry out, the replacement record of defect area is carried out.
Like this, it is also irrelevant that either party has right of priority, but above-mentioned backup area is when having right of priority, if user data area (fragment field) is provided with record/read restriction, just can not carry out the detection of defect area, therefore right of priority should be placed on user data area (fragment field).
So if right of priority is placed on user data area (fragment field), the record controls bit of backup area just loses practical significance, therefore the routine accompanying drawing that is constructed as follows of " Unknown PAC rule " is handled like that.
Fig. 9 a and Fig. 9 b are the formation synoptic diagram of another embodiment of the present invention " Unknown PAC rule ".
At first, shown in Fig. 9 a,, the record of above-mentioned backup area can be carried out because of right of priority being placed on record (write) control bit that user data area (fragment field) loses the backup area of practical significance, can use to force to be set to ' 0 ' method.
Promptly, right of priority is placed on user data area (fragment field), according to the record in above-mentioned user data area (fragment field)/read control content, when detecting defect area, make it can replace record, the record controls bit of above-mentioned backup area is set to ' 0 '.
In addition, except this method, shown in Fig. 9 b, can use the method for eliminating fully on " Unknown PAC rule " the backup area field.
That is,, will from field, eliminate the control bit of the skimble-skamble backup area that becomes because of user data area (fragment field) has right of priority.This with backup area read control the same, be to make it can not only use " Unknown PACrule " to finish record controls to above-mentioned backup area.
In addition, but at the high density compact disc (BC-WO) of single record, in the time of will writing down new data on the record field, the logic that the present invention also can be equally applicable to replace being recorded in backup area covers (Logical Overwrite:LOW) method.
Figure 10 is the integration map that embodies the optical recording and reading apparatus formation of the technology of the present invention thought.
As shown in figure 10, optical recording and reading apparatus of the present invention is included in record reader (recording/reproducing device) 10 that CD 1 logout reads and the main frame or the controller (Hostor Controller) (hereinafter to be referred as main frame) 20 of controlling recording reader constitutes (generally above-mentioned record reader 10 is called CD drive (drive), this summary has been used both with).
That is, above-mentioned main frame 20 is record or reading command of assigning the CD specific area to record reader 10, and above-mentioned record reader 10 is made action according to the instruction of main frame 20, so that the record read operation of operation specific area.
At this moment, above-mentioned record reader 10 specifically comprises following several sections: the interface portion 12 of carrying out the transmission/communications such as reception (communication) of data and instruction with main frame 20; The acoustic pickup 11 that data of optical disk is directly write down or reads; Receive the signal that above-mentioned acoustic pickup 11 reads, be reduced to desired signal value, or will tracer signal modulation (modulation) be the signal of video disc recording, the data processor of passing on 13; Correctly read signal from CD, or, control the servomechanism 14 of above-mentioned acoustic pickup 11 for signal correctly is recorded in CD; The interim internal memory 15 that stores the multiple information and the data that comprise management information; Bear microprocessor 16 to the control of the constituent element of above-mentioned record reader 10.
Utilize the optical recording and reading apparatus that constitutes like this,, will illustrate that PAC recording method of the present invention is as follows at recordable high density compact disc.
At first, if CD 1 is inserted in the optical recording and reading apparatus, all management information in the above-mentioned CD are read, and are stored in the internal memory in the above-mentioned record reader 10, and these management information are used when reading the record of CD.
Under such state, if customer requirements is at the specific area record of above-mentioned CD 1, as recording instruction, the data with writing down the positional information that requires record are communicated to above-mentioned record reader 10 it for above-mentioned main frame 20.
The microprocessor 16 of above-mentioned record reader 10 receives above-mentioned recording instruction, management information according to above-mentioned internal memory 15 storages, after confirming main frame 20 requires the field of optical discs of record whether to belong to defect area, in the field that is not defect area, according to the recording instruction of above-mentioned main frame 20, the record of service data.
At this moment, the microprocessor 16 of above-mentioned record reader 10 is, if requirement according to the user, the function that limits the record of whole CD or specific area or read and so on, perhaps be judged as the new function (feature) that does not have because of the record reading device that comprises existing version (version), when the record reading device of existing version can't be discerned, the control information that above-mentioned field is relevant was recorded in PAC district (PAC Zone) on the CD with " Unknown PAC rule ".
At this moment, can not make user data area (after the definition of fragment field, be the fragment field) record/reading control content conflicts mutually with the record controls content of backup area, the record controls bit of above-mentioned backup area forces to be set to ' 0 ', or can not write down the field that can control above-mentioned backup area.
Above-mentioned PAC information as required, is recorded as 1 bunch of size respectively as a plurality of effective PAC (ValidPAC) in the PAC1 district in information 1 district, the PAC2 district in information 2 districts is as the PAC duplicate of backup (back-up) with the above-mentioned PAC1 of record district record.
For this reason, above-mentioned microprocessor 16 will write down the positional information in the field of above-mentioned data or PAC district and data and send servo 14 and data processor 13 to, by acoustic pickup 11, make it finish record in the position in the CD of being ready.
In addition, utilize such method, declare record and reading and recording are had the method for high density compact disc of PAC as follows.
At first, if CD 1 is inserted in the optical recording and reading apparatus, all management information in the above-mentioned CD 1 are read, and are stored in the internal memory in the above-mentioned record reader 10, and these management information are used when reading the record of CD.
At this moment, the information of above-mentioned internal memory 10 storages has the positional information in the various fields in the PAC district that comprises on the CD 1.Afterwards, confirm the PAC-ID in above-mentioned PAC district, confirm with this whether above-mentioned PAC-ID belongs to discernible PAC-ID.
Above-mentioned affirmation result, but when the PAC-ID of record belongs to identification types, just judge identical with the record reading device version of above-mentioned video disc recording data, or the situation of record/read separately not, according to the instruction of main frame 20, logout/read.
In addition, in the time of can not discerning the code of above-mentioned PAC-ID record, the reason that writes down and so on because of the different record reading device of version just, being judged as does not have record/read the situation of restriction, at this moment the record on the CD of reference record " Unknown PACRule "/read restriction field, according to main frame 20 instructions, logout/read.
At this moment, according to above-mentioned " Unknown PAC Rule ", user data area is (behind the definition fragment field, be the fragment field) record/read control content when conflicting mutually with the record controls content of backup area, ＂ or ＂ function with one embodiment of the invention are made action, or have the control content of right of priority in accordance with another embodiment of the present invention, make its can logout/read.
For this reason, above-mentioned microprocessor 16 sends the positional information of above-mentioned host command and data to servo 14 and data processor 13, makes it finish in the CD 1 institute by acoustic pickup 11 and is ready locational record/read.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.
Claims (14)
1, a kind of record reading method of high density compact disc, described high density compact disc comprises Lead-In Area, backup area, user data area, leading-out zone, it is characterized in that described record reading method comprises:
The record that the above-specified high density CD has at least more than one writes down the physics access control of reading information to the above-specified high density optical disc data;
In the field of optical discs of managing with the unknown rule of above-mentioned physics access control, if user data area the or when record that user data area carries out the segment field that definition back, segment field obtained read control content and conflict mutually with the record controls content of backup area occupies preferentially side's control content.
2, the record reading method of high density compact disc as claimed in claim 1 is characterized in that:
Described at least more than one physics access control is the physics area access control that is recorded in the above-specified high density CD.
3, the record reading method of high density compact disc as claimed in claim 1 is characterized in that:
Described fragment field is the CD specific area by above-mentioned unknown rule management.
4, the record reading method of high density compact disc as claimed in claim 3 is characterized in that:
Described fragment field is that the fragment field to above-mentioned physics access control is defined as the 1st bunch the 1st physical sector number and last bunch last physical sector number.
5, the record reading method of high density compact disc as claimed in claim 1 is characterized in that:
Be meant during described mutual conflict that for compact disc defect management or logic cover record the data that above-mentioned user data area will be write down and write down replace being recorded in the situation of backup area.
6, the record reading method of high density compact disc as claimed in claim 1 is characterized in that:
Described physics access control has physics access control identifier as the field that physics access control type and cognizance code are provided.
7, the record reading method of high density compact disc as claimed in claim 6 is characterized in that:
Described unknown rule is the rule that is used for discerning the driver of above-mentioned physics access control identifier.
8, the record reading method of high density compact disc as claimed in claim 1 is characterized in that:
Described field of optical discs with the unknown rule management comprises defect management, backup area, control data zone, user data area, physics access control bunch zone.
9, the record reading method of high density compact disc as claimed in claim 1 is characterized in that:
The control content of described user data area occupies preferentially.
10, the record reading method of high density compact disc as claimed in claim 9 is characterized in that:
If the control content of described user data area occupies preferentially, but just the record controls content of above-mentioned backup area forces to be set to record.
11, the record reading method of high density compact disc as claimed in claim 9 is characterized in that:
If the control content of described user data area occupies preferentially, just be set to and control backup area with unknown rule.
12, a kind of record reading method of high density compact disc, described high density compact disc comprises Lead-In Area, backup area, user data area, leading-out zone, it is characterized in that described record reading method comprises:
The physics access control that the record of the more than one at least record above-specified high density data of optical disk of high density compact disc formation reads information,
In the field of optical discs of managing with the unknown rule of above-mentioned physics access control, if user data area the or when record that user data area carries out the segment field that definition back, segment field obtained read control content and conflict mutually with the record controls content of backup area, above-mentioned control content is suitable for ＂ or ＂ function, described OR function is meant that in described backup area or described user data area either party is provided with record and reads restriction, perhaps in described backup area or described segment field either party is provided with record or reads restriction, just can not carry out the replacement record of defect area.
13, the record reading method of high density compact disc as claimed in claim 12 is characterized in that:
Described conflicting situation is meant that the data that above-mentioned user data area will be write down and write down replace recording backup area for compact disc defect management or logic covering record.
14, the record reading method of high density compact disc as claimed in claim 13 is characterized in that:
The record that is set to described backup area is controlled, in the time of can not carrying out the replacement record of defect area with ＂ or ＂ function, the record controls content that above-mentioned backup area is provided with is used as the replacement record controls bit at defect management.
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| CNB2005101124591A CN100463056C (en) | 2005-12-30 | 2005-12-30 | Record reading method of high-density compact disk |
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| JP2005251242A (en) * | 2004-03-01 | 2005-09-15 | Pioneer Electronic Corp | Information recording medium, device and method for recording information thereon, device and method for reproducing information therefrom, computer program for controlling recording/reproducing, and data structure containing control signal |
| JP2005339774A (en) * | 2004-05-21 | 2005-12-08 | Samsung Electronics Co Ltd | Information recording medium, recording/reproducing apparatus, recording/reproducing method and computer readable recording medium recorded with program to perform this method |
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| JP2003030934A (en) * | 2001-07-13 | 2003-01-31 | Sharp Corp | Recording and reproducing device for medium like disk |
| CN1551134A (en) * | 2003-04-19 | 2004-12-01 | 三星电子株式会社 | Method of managing defects for a write-once recording medium, device and medium |
| WO2005004151A1 (en) * | 2003-07-07 | 2005-01-13 | Pioneer Corporation | Information recording medium, recording apparatus and recording method for information recording medium, reproducing apparatus and reproducing method for information recording medium, computer program for controlling recording or reproduction, and data structure including control signal |
| JP2005251242A (en) * | 2004-03-01 | 2005-09-15 | Pioneer Electronic Corp | Information recording medium, device and method for recording information thereon, device and method for reproducing information therefrom, computer program for controlling recording/reproducing, and data structure containing control signal |
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