CN101312062B - Recording/ reproducing method - Google Patents

Recording/ reproducing method Download PDF

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Publication number
CN101312062B
CN101312062B CN200810109794XA CN200810109794A CN101312062B CN 101312062 B CN101312062 B CN 101312062B CN 200810109794X A CN200810109794X A CN 200810109794XA CN 200810109794 A CN200810109794 A CN 200810109794A CN 101312062 B CN101312062 B CN 101312062B
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China
Prior art keywords
defect
block
information
continuous
defective
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CN200810109794XA
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Chinese (zh)
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CN101312062A (en
Inventor
黄盛熙
高祯完
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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Priority claimed from KR1020040009846A external-priority patent/KR100739679B1/en
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Publication of CN101312062A publication Critical patent/CN101312062A/en
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/0079—Zoned data area, e.g. having different data structures or formats for the user data within data layer, Zone Constant Linear Velocity [ZCLV], Zone Constant Angular Velocity [ZCAV], carriers with RAM and ROM areas
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1833—Error detection or correction; Testing, e.g. of drop-outs by adding special lists or symbols to the coded information
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1883—Methods for assignment of alternate areas for defective areas
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/013—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track for discrete information, i.e. where each information unit is stored in a distinct discrete location, e.g. digital information formats within a data block or sector
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/23—Disc-shaped record carriers characterised in that the disc has a specific layer structure
    • G11B2220/235—Multilayer discs, i.e. multiple recording layers accessed from the same side

Abstract

An optical recording medium including a user data area and an SA/DL area in which a replacement block to replace a defective block in the user data area, and information regarding a defect corresponding to the defective block, is recorded, wherein the information regarding the defect includes a consecutive defect list entry including information regarding defects located in consecutive locations of the user data area, and an apparatus, and a method of, using the optical recording medium.

Description

Recording/reproducing method
The application is to be title the dividing an application for No. 200480039939.3 application of " optical record medium, recording/reproducing apparatus and recording/reproducing method " on Dec 27th, 2004 to the applying date that Intellectual Property in China office submits to.
Technical field
The present invention relates to a kind of optical record medium, recording/reproducing apparatus and recording/reproducing method that is used for defect management.
Background technology
Defect management is a kind of like this processing, and it is through the defective in the user data area that will be recorded in dish, and promptly the new part that writes user data area of the user data in the defect block compensates the data degradation that is caused by defect block.Usually, use linear replacement method or slip replacement method to carry out defect management.In these methods, with there not being the spare area of defective to replace defective district.In slip replacement method, slip over defective district, and use next flawless district.In linearity replacement method, the piece of the appearance defective of user data area is called as defect block.The replace block that is used for replacing defect block is recorded in the spare area of predetermined portions of dish.About the information of defect block and replace block, the information that promptly is used for the position of search for defects piece and replace block is shown in defect list.
Usually, when the data of main frame reading and recording on dish, the logical address of main frame specified data, and order hard disk drive reading of data.Then, hard disk drive search and this logical address physical address corresponding, and the data in the position corresponding of reading and recording on dish with this physical address.If defect block appears in the data corresponding with this physical address, then hard disk drive must be sought the replace block of replacement defect block.Therefore, defect list comprises defect list entries, and each clauses and subclauses comprises the information about each defect block respectively.That is,, therefore need be used for sizable record space of defect list for each defect block produces defect list entries.
Disclosure of the Invention
Technical matters
Therefore, need effectively manage the space that is used for defect list.For this reason, need be to about defect block, the information of the defect block that particularly occurs in the continuous position of user data area is effectively managed.
Technical solution
The present invention provides defect management apparatus and the method in the required space of a kind of defect list that is used for managing defect on it in the CD, a kind of dish of management effectively of defect managed and storage to be used for the computer-readable CD that opertaing device is carried out the computer program of said defect management method.
Beneficial effect
According to the present invention, on the CD that defect management is performed, the space that is used for the defect list of recording defect management can be managed effectively, thereby whole disk space can be by management effectively.
Description of drawings
Fig. 1 is the block diagram according to the data recording/reproducing device of the embodiment of the invention.
Fig. 2 is the structural drawing according to the single record layer disc of the embodiment of the invention.
Fig. 3 is the structural drawing according to the double record layer disc of the embodiment of the invention.
Fig. 4 is the data structure diagram according to the SA/DL district of the embodiment of the invention.
Fig. 5 is the detailed data composition of the DL#i shown in Fig. 4.
Fig. 6 is the detailed data structure diagram of the DL clauses and subclauses #i shown in Fig. 5.
Fig. 7 is the reference diagram that illustrates according to the continuous defect piece of the embodiment of the invention.
Fig. 8 is the reference diagram that illustrates according to the continuous defect tabulation of the embodiment of the invention.
Fig. 9 is the diagrammatic sketch that the example of replacement status information shown in Fig. 6 and continuous defect information is shown.
Figure 10 A and Figure 10 B illustrate according to the continuous defect piece with replacement of the embodiment of the invention and do not have the reference diagram of the continuous defect piece of replacement.
Figure 11 A is the data structure diagram of the DL#k shown in Figure 10 B.
Figure 11 B is the data structure diagram of the DL#k shown in Figure 10 B, and this DL#k also comprises the information about the quantity of continuous defect list of entries.
Figure 11 C is the data structure diagram of the DL#k shown in Figure 10 B, and this DL#k also comprises about the information of the quantity of the continuous defect list of entries with replacement status information " 0 " and about the information of the quantity of continuous defect list of entries with replacement status information " 1 ".
Figure 12 is according to the usefulness of the embodiment of the invention process flow diagram of the defect management method of the CD managed of defect area on it.
Best mode
According to an aspect of the present invention, optical record medium of defect managed comprises that the replace block and the information relevant with defective of the defect block in the replacement user data area are recorded in SA/DL district wherein on it.The said information relevant with defective comprises the continuous defect list of entries, and said continuous defect list of entries comprises the information relevant with the defective of the continuous position that is arranged in user data area.
Said continuous defect list of entries can comprise: the beginning clauses and subclauses, corresponding to the information relevant with first defect block; And end entry, corresponding to the information relevant with last defect block, wherein, said first defect block and last defect block belong to the defect block in the continuous position of user data area.
Said beginning clauses and subclauses can comprise with the first defect block location information related and with the replacement first defect block the replace block location information related.
Said end entry can comprise with last defect block location information related and with the replace block location information related of the last defect block of replacement.
The said information relevant with defective can comprise the information relevant with the quantity of continuous defect list of entries.
The said information relevant with defective also can comprise the information relevant with the quantity of defect list entries.
Can multiply by factor 2 through quantity, and from the quantity of defect list entries, deduct the product of gained, calculate the quantity of individual defect list of entries the continuous defect list of entries.
The said information relevant with defective can comprise defect list entries, said defect list entries comprise with the defect block location information related, with the replace block location information related and with defective relevant status information.
Said status information can comprise: whether replacement status information whether the expression defect block is replaced and expression defect block are the continuous defect information of continuous defect piece.
The said information relevant with defective also can comprise: with the relevant information of quantity of the continuous defect list of entries with replacement status information of representing that defect block is replaced.
The said information relevant with defective also can comprise: with the relevant information of quantity of the continuous defect list of entries with replacement status information of representing that defect block is not replaced.
According to a further aspect in the invention, a kind ofly be used for that the equipment of recording/reproducing data comprises on optical record medium: write/read unit is used for writing on the said medium data and/or from said medium reading of data; And control module; Wherein, Said control module is that said medium distributes the SA/DL district; The replace block and the information relevant with defective of the defect block with defective in the replacement user data area are recorded in the said SA/DL district; And said control module control write/read unit is recorded in the said information relevant with defective in the SA/DL district, and the said information relevant with defective comprises the continuous defect list of entries, and said continuous defect list of entries is corresponding to the information relevant with the defective of the continuous position that is arranged in user data area.
According to a further aspect in the invention; A kind of on optical record medium the method for recording/reproducing data comprise: be that medium distributes the SA/DL district, be used for replacing user data area defect block replace block and be recorded in the said SA/DL district corresponding to the relevant information of the defective of said defect block; The information relevant with defective is recorded in the SA/DL district, and the said information relevant with defective comprises the continuous defect list of entries, and said continuous defect list of entries is corresponding to the information relevant with the defective of the continuous position that is arranged in user data area.
According to a further aspect in the invention; A kind of stored program computer-readable CD is provided; Said program is used to control with the data recording CD of defect managed/carry out defect management method from the equipment of these optical disc replay data above that; Said defect management method comprises: be that medium distributes the SA/DL district, the replace block and the information relevant with defective that are used for replacing the defect block with defective of user data area are recorded in the said SA/DL district; The information relevant with defective is recorded in the SA/DL district, and the said information relevant with defective comprises the continuous defect list of entries, and said continuous defect list of entries is corresponding to the information relevant with the defective of the continuous position that is arranged in user data area.
Embodiment
Now, will be described in detail the embodiment of the invention, its example is illustrated in the accompanying drawing, and in the accompanying drawings, identical label is represented identical parts all the time.Below, will illustrate and describe embodiment to explain the present invention.
Fig. 1 is the block diagram according to the data recording/reproducing device of the embodiment of the invention.
With reference to Fig. 1, this data recording/reproducing device comprises write/read unit 2 and control module 1.
According to the present invention, write/read unit 2 comprises pick-up, and with data recording above that on the dish 4 of defect managed/from coiling 4 reading of data.Control module 1 is carried out according to defect management of the present invention.In an embodiment of the present invention, control module 1 uses verify-after-write method, through with predetermined records data in units and data recorded is carried out verification seek defective data.Control module 1 is through writing user data and user data being carried out verification check defective data where occurred with recording operation unit.Control module 1 is after being checked through defective data; Produce the indication defective data and be positioned at defect information where; With the information that produces as the temporary defect information stores in storer, and after the information of the said generation that has compiled scheduled volume, the information that produces is recorded on the dish.
In an embodiment of the present invention, as the recording operation of the operation of confirming by user's intention or the recording operation of expectation etc. refer to comprise loading disc, in the disc recording data and the operation of unloading load plate.During said recording operation, verify-after-write operation is performed once at least.Then, will be stored in the storer through the said temporary defect information of using verify-after-write operation to obtain temporarily.
When the user pressed the ejector button (not shown) in order to unload load plate, control module 1 confirmed that recording operation is terminated, and reads the temporary defect information that is stored in the storer, and this information is offered write/read unit 2, and this information is recorded on the dish.
Control module 1 comprises: system controller 10, main frame I/F 20, digital signal processor (DSP) 30, RF AMP 40 and servo control mechanism 50.During recording operation, main frame I/F 20 receives predetermined write order from main frame 3 (in the present embodiment, being computing machine), and this write order is sent to system controller 10.System controller 10 is under the write order that receives from main frame I/F 20, and control DSP 30 operates with servo control mechanism 50 executive loggings.DSP 30 with the additional data such as parity checking add to from main frame I/F20 receive will be by data recorded with correcting error of data, and DSP 30 carries out the ECC coding, produces the ECC piece as error correction block, and in a predetermined manner the ECC piece modulated.RF AMP 40 will change into the RF signal from the data of DSP 30 outputs.Write/read unit 2 will coiled on 4 from the RF signal record that RF AMP 40 sends.Servo control mechanism 50 is stored from the record order of system controller 10 inputs, and the pick-up of write/read unit 2 is carried out servocontrol.
System controller 10 comprises defect management unit 11 and memory cell 12, with managing defect.According to the present invention, defect management unit 11 reads the temporary defect information that is stored in the memory cell 12, compiles said temporary defect information, produces defect list then.Promptly; When the information that finds in the defect information that defect management unit 11 is reading about continuous defect block; Defect management unit 11 produces the continuous defect list of entries; Said continuous defect list of entries comprises: the beginning clauses and subclauses, and corresponding with information about first defect block of said continuous defect piece; And end entry, corresponding with information about the last defect block of said continuous defect piece.Therefore, even for example 8 defect block occur continuously, also only produce 2 clauses and subclauses, rather than 8 clauses and subclauses, this is because be not to be that each of 8 pieces produces clauses and subclauses, but is that first of 8 continuous defect pieces produces clauses and subclauses with last piece.Therefore, the required space of store items can reduce.Defect management unit 11 also produces the DL clauses and subclauses, and said DL clauses and subclauses comprise: continuous defect information, display defect are continuous defect or individual defect; The replacement status information shows whether there is replace block.Defect management unit 11 produces the DL that comprises such DL clauses and subclauses.
In order to reproduce data, main frame I/F 20 receives read command from main frame 3.System controller 10 is carried out and is reproduced required initialization.Write/read unit 2 projects laser beam on the dish 4, and output is through receiving from coiling the optical signalling that 4 laser light reflected bundles obtain.RF AMP 40 will change into the RF signal from the optical signalling of write/read unit 2 output, and the data of the modulation that will obtain from this RF signal send to DSP 30, and will send to servo control mechanism 50 from the servo-control signal that this RF signal obtains.The data of 30 pairs of modulation of DSP are carried out demodulation, and demodulated data is carried out the ECC error correction.Receiving from the servosignal of RF AMP 40 with from the control of system controller 10 after the servo required order, 50 pairs of pick-ups of servo control mechanism carry out servocontrol.Main frame I/F 20 will send to main frame 3 from the data that DSP 30 receives.For the reproduction of control data, system controller 10 control servo control mechanisms 50 are from position reading of data that data are write down.
Structure according to the CD of defect managed on its of the embodiment of the invention is following.
Be recorded in according to the management information on the CD of the embodiment of the invention (DMI) and comprise: dish definition structure (DDS), record management data (RMD) and defect list (DL).DMI record disc management area (DMA) on it comprising: temporary disk (T-disk) directorial area (TDMA), and when dish was write down, TDMA was used to write down interim DMI; Disc management area (FDMA) with final is used to write down final DMI.
The TDMA that is used to write down interim DMI comprises: the DDS/RMD district is used to write down DDS and RMD; With the DL district, be used to write down DL.
DDS comprises: about the positional information in SA/DL district, in said SA/DL district, record replace block and DL, said replace block replacement defect block when defective occurring in the data block in being recorded in the data field; Positional information about the DDS/RMD district; Be recorded in positional information where about DL; The positional information that can be used for replacing the data in the SA/DL district or be used to upgrade DL; Whether the consistance mark is used for inspection panel and when being used, normally ejects; And write protection information, be used to prevent to write.
RMD is and the relevant information of data of management disc recording, comprises: Zone R territory clauses and subclauses, the state in each Zone R territory under the DISPLAY ORDER logging mode; Bitmap is shown as place value, and said place value representes that for the recorded at random pattern whether the data relevant with each record units chunk of user area are by record.
In single record layer disc, the DDS/RMD district that is used for writing down DDS and RMD is disposed in Lead-In Area or leading-out zone, and in double record layer disc, the DDS/RMD district is disposed in Lead-In Area, mesozone or the leading-out zone.In order to use dish to dish intention according to drive manufacturers or user during initialization, the DDS/RMD district can be dispensed in the part of data field to increase the quantity of possible renewal.
When can not be in disc recording multidata more, perhaps the user wants the current state of holding tray and no longer writes down other data, when only this dish being used to reproduce, carry out the envelope dish, and final management information is recorded among the FDMA.
The PCA district is arranged and is used for test, and said test is meant according to writing strategy detection optimal recording power from various recording powers and also detects according to the variable of writing strategy.
Fig. 2 is the structural drawing according to the single record layer disc of the embodiment of the invention.
With reference to Fig. 2, leading-out zone forms towards the periphery of dish, and Lead-In Area is formed centrally in dish, and the data field is formed between leading-out zone and the Lead-In Area.
Lead-In Area comprises: PCA#0, FDMA#1, FDMA#2 and DDS/RMD district #0.The data field comprises user area, SA/DL district #0 and SA/DL district #1.Leading-out zone comprises PCA#1, FDMA#3, FDMA#4 and DDS/RMD district #1.
Fig. 3 is the structural drawing according to the double record layer disc of the embodiment of the invention.
With reference to Fig. 3, Lead-In Area, data field #0 and mesozone #0 are arranged among the recording layer L0, and mesozone #1, data field #1 and leading-out zone are arranged among another recording areas L1 in order.
In layer L0, Lead-In Area comprises: PCA#0, FDMA#2, DDS/RMD district #0 and FDMA#1.The data field comprises SA/DL district #0 and user area #0.Mesozone #0 comprises: FDMA#3, DDS/RMD district #2, FDMA#4 and PCA#1.On the other hand, in layer L1, mesozone #1 comprises: FDMA#3, DDS/RMD district #3, FDMA#4 and PCA#3.Data field #1 comprises: SA/DL district #1 and user area #1.Leading-out zone comprises PCA#2, FDMA#2, DDS/RMD district #1 and FDMA#1.
Shown in Fig. 2 and Fig. 3, when defective occurring in the user area, the replace block of replacement defect block is recorded in the SA/DL district with the information about defective.Said information about defective comprises positional information about defect block, about the positional information of replace block and about the information of continuous defect.
Fig. 4 is the data structure diagram according to the SA/DL district of the embodiment of the invention.
With reference to Fig. 4, SA/DL district #i comprises: DL#0, replace block #1...... replace block #k, DL#1, replace block #k+1......DL#m.
DL#0 is the defect list that comprises about the information of defective, comprises initialization information.
From the and then DL#0 setting of replace block of replace block #1 to #k, these replace blocks replacements are from the defect block of defect block #1 to #k.DL#1 be comprise with from the relevant information of the defect block of defect block #1 to #k and with defect list from the relevant information of the replace block of replace block #1 to #k, DL#1 and then replace block #k by record.From the and then DL#1 setting of replace block of replace block #k+1 to #m, about the defective that occurs in the user area, these replace blocks replacements are from the defect block of defect block #k+1 to #m.
By this way, be recorded in the SA/DL district according to the defect list that comprises the information relevant with defective of the embodiment of the invention, the replace block of replacement defect block also is arranged in this SA/DL district.That is, defect list and replace block are arranged in a district, rather than are arranged in district separately.
Fig. 5 is the detailed data structure diagram of the DL#i shown in Fig. 4.
With reference to Fig. 5, DL#i 200 comprises: DL identifier 210, DL refresh counter 220, DL number of entries 230, DL clauses and subclauses #1240 and DL clauses and subclauses #2250.
DL identifier 210 is identifiers of indication defect list.That is, owing to the present embodiment according to the present invention, defect list and replace block one are located in the SA/DL district, therefore need the identifier of indication defect list.
DL refresh counter 220 is values of the update times of display defect tabulation.
DL number of entries 230 is sums of the clauses and subclauses that comprise in the defect list.
DL clauses and subclauses #1240 or DL clauses and subclauses #2250 are the clauses and subclauses that have about the information of defective.The example of the content that comprises in these DL clauses and subclauses has been shown among Fig. 6.
Fig. 6 is the detailed data structure diagram of the DL clauses and subclauses #i shown in Fig. 5.
With reference to Fig. 6, DL clauses and subclauses #i 300 comprises: status information 310, defective block location in-formation 320 and replace block positional information 330.
Status information 310 is the status informations about the defective of being represented by corresponding D L clauses and subclauses.The defect block location information related that writes down on defective block location in-formation 320 expressions and the user area, the for example sector number of defect block.The replace block location information related of record, the for example physical sector number of replace block in 330 expressions of replace block positional information and the SA/DL district.
Status information 310 comprises: length is 1 replacement status information 311, the continuous defect information 312 that length is 2.
Whether the defect block that replacement status information 311 is expressed in the present user area is replaced.That is, this information representation is that the defect block in the user area is replaced and replace block is present in the SA/DL district, or defect block is not replaced and replace block is not present in the SA/DL district.
Whether continuous defect information 312 expression DL clauses and subclauses are continuous DL clauses and subclauses of expression continuous defect piece, and if the DL clauses and subclauses are continuous DL clauses and subclauses, then these DL clauses and subclauses end that is beginning of continuous DL clauses and subclauses or continuous DL clauses and subclauses.
Below, will continuous defect piece and continuous defect list of entries be described with reference to Fig. 7 and Fig. 8.
With reference to Fig. 7,1. to 7. referring to the unit that verify-after-write operation wherein is performed.Recording unit records user data up to section and 1. goes up, and returns section initial part 1. then, is data by record correctly or defective occurs with inspection.If detect defective part, then this part is designated as defect area.Therefore, designated as the defective #1 of defect area.Recording unit is recorded in data recorded among the defective #1 in the SA/DL district once more.The part that data recorded is recorded in wherein once more among the defective #1 is called replacement #1.Then, 2. recording unit records user data up to section, returns section initial part 2. then, is data by record correctly or defective occurs with inspection.If detect defective part, then this part is designated as defective #2.In an identical manner, produce the replacement #2 corresponding with defective #2.Section 3. in, produce defective #3 and replacement #3.Owing to do not detect defective part at section in 4., therefore in this section, do not have defect area.
When foreseeing the termination of recording operation #0 after 4. to section in record and verification (when the user presses the record completion of the user data that ejector button perhaps distributes in this recording operation); Recording unit writes down DL#1 in the SA/DL district, said DL#1 comprises the relevant information of defective #1, #2 and #3 that 1. occurs in 4. with section.
During recording operation # 1,5. pen recorder records user data up to section, returns section initial part 5. then, is data by record correctly or defective occurs with inspection.If detect defective part, then this part is designated as defect area.By this way, owing to occur continuously as the defective #4 and the defective #5 of defect area, so continuous blocks are designated as defect block.Pen recorder is recorded in data recorded among defective #4 and the defective #5 in the SA/DL district once more.Then, 6. recording unit records user data up to section, returns section initial part 6. then, is data by record correctly or defective occurs with inspection.If defective #6 and defective #7 as defect area occur continuously, then continuous blocks are designated as defect block.Recording unit is recorded in data recorded among defective #6 and the defective #7 in the SA/DL district once more.In section @, do not detect defective part, so there is not defect area.When foreseeing the termination of recording operation #1, recording unit is recorded in DL#2 in the SA/DL district, and DL#2 comprises the information about defective #4 to #7.
The defect block that occurs in the continuous position of user area is the continuous defect piece like the defective that occurs among the recording operation #1.First defect block of this continuous defect piece is defective #4, and last defect block is defective #7.
The replace block of the continuous defect piece that replacement occurs in the precalculated position of user area continuously is recorded in the continuous position in SA/DL district.Shown in the SA/DL district, the replace block #4 of replacement defect block #4 is arranged.At the next position, the replace block #5 of replacement defect block #5 is arranged.At the next position, the replace block #6 of replacement defect block #6 is arranged.Then, at the next position, the replace block #7 of replacement defect block #7 is arranged.First replace block in the replace block of replacement continuous defect piece is replace block #4, and the last replace block of replacing these continuous defect pieces is replace block #7.
When the continuous defect piece occurring at continuous position; Because such characteristic; Be that the defect block that comprises in the continuous defect piece is positioned at continuous position; Therefore, just can know the position of all the other pieces that comprise the continuous defect piece from first with the position of piece at last as long as known first the position of continuous defect piece and the position of last piece.Therefore, through only comprising, can reduce to write down about the required space of the information of defective about in the information of defective and first defect block continuous defect piece and the last relevant information of defect block.This is applicable to the replace block of replacement continuous defect piece too.
Therefore, as shown in Figure 8, show that the continuous defect list of entries of the information relevant with the continuous defect piece can comprise beginning clauses and subclauses and end entry.
With reference to Fig. 8, the continuous defect list of entries comprises beginning clauses and subclauses and end entry.The beginning clauses and subclauses all have and the identical structure of DL clauses and subclauses shown in Fig. 6 with end entry.The beginning clauses and subclauses comprise with continuous defect in the relevant information of first defective, end entry comprise with continuous defect in the relevant information of last defective.
The beginning clauses and subclauses comprise: status information; First defective block location in-formation, first defect block in the expression continuous defect piece is recorded in the position in the user area; The first replace block positional information, first replace block of expression replacement first defect block is recorded in the position in the SA/DL district.End entry comprises: status information; Last defective block location in-formation, the last defect block in the expression continuous defect piece is recorded in the position in the user area; Last replace block positional information, the last replace block of the last defect block of expression replacement is recorded in the position in the SA/DL district.
Fig. 9 is the example of replacement status information shown in Fig. 6 and continuous defect information.
With reference to Fig. 9, the position of expression replacement status information is " 0 " and " 1 ".If replacement status information 311 is " 1 " then be not replaced with defective block location in-formation 320 corresponding defect block, only defective locations is illustrated.If replacement status information 311 is " 0 ", then replace with replace block positional information 330 corresponding replace blocks with defective block location in-formation 320 corresponding defect block quilts.
The position of expression continuous defect information is " 00 ", " 01 " and " 10 ".If continuous defect information 312 is " 00 ", then the DL clauses and subclauses are not the continuous defect list of entries, but the individual defect list of entries.In this case, depend on the value that is provided with as the replacement status information, the defect block that the DL clauses and subclauses can be represented to have the defect block of replacement or not have replacement.Under the situation of the defect block with replacement, the DL clauses and subclauses have defective block location in-formation and replace block positional information.Under the situation of the defect block that does not have replacement, the DL clauses and subclauses only have defective block location in-formation.
If continuous defect information 312 is " 01 ", then the DL clauses and subclauses are represented the beginning clauses and subclauses of continuous defect list of entries.Therefore, as shown in Figure 8, these DL clauses and subclauses have first defective block location in-formation relevant with the continuous defect piece and the first replace block positional information relevant with continuous replace block.
If continuous defect information 312 is " 10 ", then the DL clauses and subclauses are represented the end entry of continuous defect list of entries.Therefore, as shown in Figure 8, the DL clauses and subclauses have last defective block location in-formation relevant with the continuous defect piece and the last replace block positional information relevant with continuous replace block.
Below, be that 1 status information 311 and length is the assignment of 3 bit patterns of 2 continuous defect information 312 with describing length.
If said 3 hytes are combined into " 000 ", then the DL clauses and subclauses are represented the state that individual defect list of entries and this individual defect piece about the individual defect piece have replace block.Therefore, the DL clauses and subclauses have defective block location in-formation and replace block positional information.
If said 3 hytes are combined into " 100 ", then the DL clauses and subclauses are represented the state that individual defect list of entries and this individual defect piece about the individual defect piece do not have replace block.Therefore, the DL clauses and subclauses have defective block location in-formation, but do not have the replace block positional information.
If said 3 hytes are combined into " 001 ", then the DL clauses and subclauses are represented the beginning clauses and subclauses of the continuous defect list of entries of continuous defect piece, and begin the corresponding defect block as first defect block in the continuous defect piece of clauses and subclauses with this and have replace block.Therefore, the DL clauses and subclauses have with the continuous defect piece in the first defect block location information related and with the continuous replace block of replacement continuous defect piece in the first replace block location information related.
If said 3 hytes are combined into " 010 ", then the DL clauses and subclauses are represented the end entry of the continuous defect list of entries of continuous defect piece, and the defect block as last defect block in continuous defect piece corresponding with this end entry has replace block.Therefore, the DL clauses and subclauses have with the continuous defect piece in last defect block location information related and with the continuous replace block of replacement continuous defect piece in last replace block location information related.
If said 3 hytes are combined into " 110 ", then the DL clauses and subclauses are represented the end entry of the continuous defect list of entries of continuous defect piece, and the defect block as last defect block in continuous defect piece corresponding with this end entry do not have replace block.Therefore, the DL clauses and subclauses have with the continuous defect piece in last defect block location information related, but not with the continuous replace block of replacement continuous defect piece in last replace block location information related.
Figure 10 A and Figure 10 B are the reference diagrams that illustrates according to the continuous defect information of the embodiment of the invention.
Figure 10 A representes that user data is recorded in user area wherein, and Figure 10 B representes that replace block and defect list are recorded in SA/DL district wherein.
With reference to Figure 10 A, appear at position, user area " 5 " as the individual defect piece a of first defective.Continuous defect piece b, c, d and e as second defect block appear at continuous position " 9 " to " 12 ".Continuous defect piece f, g, h and i as the 3rd defect block appear at continuous position " 17 " to " 20 ".
With reference to Figure 10 B, replace block and defect list as the defect block that occurs in the replacement user area have been shown in the SA/DL district.
The single replace block a ' of replacement individual defect piece a is arranged in the position " 55 " in SA/DL district.Replace position " 56 " that continuous replace block b ', c ', d ' and the e ' of continuous defect piece b, c, d and e be arranged in the SA/DL district continuously to " 59 ".The defect list DL#k that after the 4th continuous defect, is updated is recorded in position " 60 ".Continuous defect piece f, g, h and i do not have replace block.The information that comprises among the defect list DL#k shown in Figure 11 A.
Figure 11 A is the data structure diagram of the DL#k shown in Figure 10 B.
With reference to Figure 11 A, DL#k 400 comprises: DL identifier 410, DL refresh counter 420, DL number of entries 430 and 5 DL clauses and subclauses, i.e. DL clauses and subclauses #1440, DL clauses and subclauses #2450, DL clauses and subclauses #3460, DL clauses and subclauses #4470 and DL clauses and subclauses #5480.
DL identifier 410 is identifiers of indication DL.In DL refresh counter 420, " K " is registered as the number of times that DL upgrades.In DL number of entries 430, " 5 " are registered as the sum of the clauses and subclauses that comprise among the DL#K.
DL clauses and subclauses #1440 is and the relevant clauses and subclauses of individual defect piece a shown in Figure 10 A.In DL clauses and subclauses #1440, " 0 " is registered as the replacement status information, and " 00 " as continuous defect information, " 5 " as defective block location in-formation, " 55 " are as the replace block positional information.
DL clauses and subclauses #2450 and DL clauses and subclauses #3460 comprise the continuous defect list of entries.
DL clauses and subclauses #2450 is the beginning clauses and subclauses of continuous defect list of entries, and DL clauses and subclauses #3460 is the end entry of continuous defect list of entries.That is, DL clauses and subclauses #2450 be with the continuous defect piece shown in Figure 10 A in the relevant clauses and subclauses of the first defect block b.In DL clauses and subclauses #2450, because defect block b is replaced, so " 0 " is registered as the replacement status information.Because DL clauses and subclauses #2450 is the beginning clauses and subclauses of continuous defect list of entries, " 01 " is registered as continuous defect information." 9 " are registered as the positional information of defect block b, and " 56 " are registered as the positional information of replace block b '.
DL clauses and subclauses #3460 be with the continuous defect piece shown in Fig. 8 in the relevant clauses and subclauses of last defect block e.In DL clauses and subclauses #3460, because defect block e is replaced, so " 0 " is registered as the replacement status information.DL clauses and subclauses #3460 is the end entry of continuous defect list of entries, so " 10 " are registered as continuous defect information." 12 " are registered as the positional information of defect block e, and " 59 " are registered as replace block e, positional information.
DL clauses and subclauses #4470 and DL clauses and subclauses #5480 comprise the continuous defect list of entries.
DL clauses and subclauses #4470 is the beginning clauses and subclauses of continuous defect list of entries, and DL clauses and subclauses #5480 is the end entry of continuous defect list of entries.That is, DL clauses and subclauses #4470 be with the continuous defect piece shown in Figure 10 A in the relevant clauses and subclauses of the first defect block f.In DL clauses and subclauses #4470, because defect block f is not replaced, so " 1 " is registered as the replacement status information.Because DL clauses and subclauses #4470 is the beginning clauses and subclauses of continuous defect list of entries, " 01 " is registered as continuous defect information." 17 " are registered as the positional information of defect block f.Because the replace block of replacement defect block f does not exist, so " 00 " is registered as the replacement positional information.
DL clauses and subclauses #5480 be with the continuous defect piece shown in Figure 10 A in the relevant clauses and subclauses of last defect block i.In DL clauses and subclauses #5480, because defect block i is not replaced, so " 1 " is registered as the replacement status information.Because DL clauses and subclauses #5480 is the end entry of continuous defect list of entries, " 10 " are registered as continuous defect information." 20 " are registered as the positional information of defect block i.Because the replace block of replacement defect block i does not exist, so " 00 " is registered as the replace block positional information.
Figure 11 B is the structural drawing of the DL#k shown in Figure 10 B, and this DL#k also comprises the information about continuous defect list of entries quantity.
DL#k shown in Figure 11 B is similar with the DL#k shown in Figure 11 A, and difference is that the DL#k shown in Figure 11 B also comprises continuous defect list of entries quantity 490.With reference to Figure 10, because two continuous defect list of entries are arranged, so " 2 " are registered as continuous defect list of entries quantity 490.
Through comprising the field of the quantity that is used for the continuous defect list of entries, need not search for all DL clauses and subclauses, just know the quantity of continuous defect list of entries in the defect list and the quantity of individual defect list of entries.As shown below, can calculate the quantity of individual defect list of entries from the quantity of the quantity of DL clauses and subclauses and continuous defect list of entries.
Individual defect list of entries quantity=DL number of entries-2 * continuous defect list of entries quantity.
Because the continuous defect list of entries comprises beginning clauses and subclauses and end entry, so can form top expression formula.
For example, in the DL#k shown in Figure 11 B, the quantity of individual defect list of entries can be calculated as " individual defect list of entries quantity=5-2 * 2=1 ".
Figure 11 C is the data structure diagram of the DL#k shown in Figure 11 B, and this DL#k also comprises: with the relevant information of quantity of the continuous defect list of entries with replacement status information " 0 "; And with the relevant information of quantity of continuous defect list of entries with replacement status information " 1 ".
DL#k shown in Figure 11 C is similar with the DL#k shown in Figure 11 B, and difference is that the DL#k shown in Figure 11 C also comprises: the information 500 relevant with the quantity of the continuous defect list of entries with replacement status information " 0 "; And the information 510 relevant with the quantity of continuous defect list of entries with replacement status information " 1 ".With reference to Figure 11 A, the continuous defect list of entries with replacement status information " 0 " is the continuous defect list of entries that comprises DL clauses and subclauses #2450 and DL clauses and subclauses #3460.Because having the quantity of the continuous defect list of entries of replacement status information " 0 " is 1, " 1 " is registered as the quantity 500 of the continuous defect list of entries with replacement status information " 0 ".Continuous defect list of entries with replacement status information " 1 " is the continuous defect list of entries that comprises DL clauses and subclauses #4470 and DL clauses and subclauses #5480.Because having the quantity of the continuous defect list of entries of replacement status information " 1 " is 1, " 1 " is registered as the quantity 510 of the continuous defect list of entries with replacement status information " 1 ".
Figure 12 is the process flow diagram that illustrates according to the defect management method of the embodiment of the invention.
With reference to Figure 12, in operation 1201, unit in data field the user data of recording unit wherein to carry out verify-after-write operation.Next, in operation 1202, the part of defective is appearred in data recorded in the operation 1201 with searching by verification.In operation 1203; Control module 1 part of defective will occur and be appointed as defect area; Be recorded in once more in the SA/DL district producing the replacement district being recorded in data in the defect area, the information that generation is relevant with defect block and replace block, and this information is recorded in the storer.Operation 1201 to 1203 is repeated, up to the termination that foresees recording operation.
Write down user data when importing according to the user, when perhaps having accomplished recording operation and in operation 1204, having foreseen the termination of this recording operation, in operation 1205, the control module 1 of pen recorder reads the information about defective that is stored in the storer.
If read about the information of defective in have information about continuous defect; Then produce the continuous defect list of entries that comprises beginning clauses and subclauses and end entry; Said beginning clauses and subclauses are corresponding with the information about first defective of continuous defect; Said end entry is corresponding with the information about last defective, and in operation 1206, also through comprising that continuous defect information and replacement status information produce DL; Said continuous defect information display defect is continuous defect or individual defect, and said replacement status information is presented in each DL clauses and subclauses whether have replace block.
In operation 1207, the DL of generation is recorded in the SA/DL district.
Above described disc defect management method also can be implemented as the computer-readable code that is stored on the computer readable recording medium storing program for performing.Said computer readable recording medium storing program for performing comprises the recording medium of all kinds that stores mechanized data.The example of said computer readable recording medium storing program for performing comprises ROM, RAM, CD-ROM, stereotape, floppy disk and optical data recording device.Computer readable recording medium storing program for performing can also be carrier wave (for example, through an internet transmission).In the computer readable recording medium storing program for performing that is distributed to the computer system that connects through network, can store and carry out the code that can read through distributed method by computing machine.Can easily release function program, code, the code segment that is used to realize disc defect management method by the programmer of technical field under the present invention.
Although shown and described several embodiments of the present invention, it should be appreciated by those skilled in the art, in not breaking away from claim and equivalent thereof, limit under the situation of principle of the present invention and spirit of its scope, can change these embodiments.
Utilizability on the industry
The present invention is applicable to optical record medium, recording/reproducing apparatus and the recording/reproducing method that is used for defect management.

Claims (4)

1. method at recording data from optical recording medium, said optical record medium comprise that record is used for replacing the presumptive area of replace block that user data area has the defect block of defective, and said method comprises:
The defect list that will comprise at least one defect list entries is recorded in the said presumptive area; Wherein, Said defect list entries has second pointer and the status information of physical location of first pointer, sensing and the corresponding replace block of defect block of the physical location that points to defect block
Wherein, said status information comprises that the expression defect block is the single or continuous first information; If defect block is continuous, said status information comprises that also the expression defect block is the begin block of continuous defect piece or second information of end block,
Wherein, Defect list also comprises: about the information of the sum that is included in the defect list entries in the defect list, the sum of said defect list entries comprises that to have the expression defect block be the continuous first information and the expression defect block is that the sum of defect list entries of second information of begin block is with to have the expression defect block be the continuous first information and the expression defect block is the sum of defect list entries of second information of end block.
2. the method for claim 1, wherein whether status information indicates the data in the defect block to be recorded in the replace block.
3. one kind from the optical record medium method of reproducing data, said optical record medium comprise record be used for replacing user data area have defective defect block replace block and about the zone of the information of defective, said method comprises:
Position reproduction defect list from the residing zone of defect list;
Wherein, defect list comprises at least one defect list entries, and said defect list entries has second pointer and the status information of physical location of first pointer, sensing and the corresponding replace block of defect block of the physical location that points to defect block,
Wherein, said status information comprises that the expression defect block is the single or continuous first information; If defect block is continuous, said status information comprises that also the expression defect block is the begin block of continuous defect piece or second information of end block,
Wherein, Defect list also comprises: about the information of the sum that is included in the defect list entries in the defect list, the sum of said defect list entries comprises that to have the expression defect block be the continuous first information and the expression defect block is that the sum of defect list entries of second information of begin block is with to have the expression defect block be the continuous first information and the expression defect block is the sum of defect list entries of second information of end block.
4. method as claimed in claim 3, wherein, whether the data in the status information indication defect block are recorded in the replace block.
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