CN101504856B

CN101504856B - Method and apparatus for recovering management information from the recording medium

Info

Publication number: CN101504856B
Application number: CN2009100050777A
Authority: CN
Inventors: 朴容彻
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2003-05-09
Filing date: 2004-05-07
Publication date: 2012-09-12
Anticipated expiration: 2024-05-07
Also published as: CN1784738A; CN101504856A; CN100547668C

Abstract

A write once optical recording medium and a method and apparatus for storing and recovering defect management information to and from the write once optical recording medium are provided. The recording medium includes at least one recording layer, and a data area on the recording layer. The data area includes at least one spare area and a user data area. The spare area contains at least one replacement cluster, each of the replacement clusters storing therein address information of a corresponding defective cluster.

Description

The method and apparatus of recovery management information from recording medium

The application is that the application number submitted on November 9th, 2005 is dividing an application of 200480012574.5 patented claim.

Technical field

The method and apparatus that the present invention relates to a kind of Write-once optical disc and be used for recovering management information from Write-once optical disc.

Background technology

CD is widely used as the optical medium of record mass data.Recently, in the middle of CD, the recording medium of a kind of new high-definition digital video disc (HD-DVD) type, like Blu-ray disc, just under development.High-definition video data and high definition audio data can both write and be kept at for a long time on this Blu-ray disc.This Blu-ray disc, HD-DVD technology promptly of future generation can be than existing DVD storage more data.

Usually, thick 1.2mm of this Blu-ray disc and diameter 12cm, and have the optical transport layer of royal purple laser of Tong Guo the wavelength 405nm of 0.1mm thickness, its DVD than the red laser of existing use wavelength 650nm is more accurate.

Among the multiple draft standards of this Blu-ray disc is being prepared.In this respect, the preparation of the various draft standards of one time write-in-type blue light dish (BD-WO) is after can rewriteeing Blu-ray disc.The BD-WO record one time write-in-type blue light dish once that is a kind of permission in its zone, and BD-RE to be a kind of permission write down in its zone, the rewritten Blu-ray disc of erasable and duplicate record.

Fig. 1 schematically shows the structure of the recording areas of BD-RE.Blu-ray disc among Fig. 1 has a recording layer, and its inner periphery from dish begins, and Lead-In Area, data area, leading-out zone are provided successively.The data field has the interior spare area (ISA0) that lays respectively at the data area inner circumferential portion and is positioned at the outer spare area (OSA0) of data area excircle part, and the user area that is positioned at the middle part, data field that supplies user data to write/write down.

If write the defect area of intermediate detection in the BD-RE data area in data, then carry out the replacement write operation, this operation is that the data in the defect area are transferred in the spare area.Afterwards, the relevant information of position of defect area and so on and the relevant information in the replacement zone of usefulness, all the management information as defect area is written in the defect management (DMA1DMA2, DMA3, and DMA4) that imports/go out the district, is used for defect management.

Yet, owing in Write-once optical disc, on the specific region, only can carry out a write operation; Thereby the good following information of management is just particularly important; That is, represent whether a zone has the positional information that writes the data on it, expression can write the positional information of position of the disk area of data; The defect area information of the position of expression defect area, or the like.For example in the unified standard of BD-WO, under the situation that defect management information is damaged or does not write, provide the method for defect management information and recovering defect management information need set up unified standard at the Write-once optical disc of developing.If under the situation of the management information that does not have recovery to lose, data are write in the dish, then a lot of problems can appear, for example write data according to previous incorrect management information, but and the position that obtains posting field on the incorrect dish.

Summary of the invention

Thus, the present invention relates to a kind of write once optical recording medium, and to/from optical disc storage and the method and apparatus that recovers management information, it has been eliminated by the limitation of prior art and the caused one or more problems of shortcoming fully.

Other features and advantages of the present invention will be described in explanation subsequently, and through following check or from practice of the present invention, learn, above-mentioned feature and advantage are conspicuous for the person of ordinary skill of the art.Can realize and obtain the object of the invention and other advantages like the structure that is particularly pointed out in instructions and claim and the accompanying drawing.

According to an aspect of the present invention; Provide a kind of from recording medium the method for recovery management information; This recording medium comprises Lead-In Area and the data field with spare area and user data area; Spare area and outer spare area in said spare area comprises; Said recording medium is included in temporary defect management area on said Lead-In Area and the said outer spare area so that storing therein temporary defect list information and temporary disk (T-disk) definition structure information; This method may further comprise the steps: reproduce (n-1) individual temporary defect list information from one of said temporary defect management area, the temporary defect management area on the said Lead-In Area has fixed size, and the temporary defect management area on the said outer spare area has variable-size; Reproduce the address information of the defect cluster of replacing by the said replacement cluster that is arranged in said spare area and the address information of said replacement cluster from replacement cluster; And based on n temporary defect list information of address information reconstruct of being reproduced.

According to a further aspect in the invention; Provide a kind of from recording medium the equipment of recovery management information; Said recording medium comprises Lead-In Area and the data field with spare area and user data area; Spare area and outer spare area in said spare area comprises; This recording medium is included in temporary defect management area on said Lead-In Area and the said outer spare area so that storing therein temporary defect list information and temporary disk (T-disk) definition structure information, and this equipment comprises: interface unit is arranged to and external device communication; Optical pick-up unit is arranged to said recording medium recording data with from said recording medium reproducing data; Data processor is arranged to the data that modulation receives from said optical pick-up unit; Servo unit is arranged to the said optical pickup apparatus of control from said recording medium reading of data and to said recording medium recording data; Storer is arranged to various data and information that interim storage comprises management information; And microcomputer; Be arranged to: control said optical pick-up and reproduce (n-1) individual temporary defect list information from one of said temporary defect management area; Temporary defect management area on the said Lead-In Area has fixed size, and the temporary defect management area on the said outer spare area has variable-size; Control said optical pick-up and reproduce the address information of the defect cluster of replacing by the said replacement cluster that is arranged in said spare area and the address information of said replacement cluster from replacement cluster; And based on n temporary defect list information of address information reconstruct of being reproduced.

Should be understood that the generality of front of the present invention is described and following detailed is exemplary and indicative, and is intended to provide the of the present invention further explanation to like claim.

Description of drawings

Included accompanying drawing provides further understanding of the present invention, and is combined and constitute the application's a part, and it has explained embodiments of the invention, and is used for explaining principle of the present invention together with the description.Wherein

Fig. 1 schematically shows the structure that BD-RE goes up write area;

Fig. 2 shows the structure according to Write-once optical disc of the present invention;

Fig. 3 shows the temporary disk (T-disk) management information on the Write-once optical disc that can be stored in Fig. 2 according to the present invention;

Fig. 4 shows the record cell structure in replacement district in the spare area of Write-once optical disc of according to the present invention Fig. 2 and 3;

Fig. 5 shows the content of the temporary disk (T-disk) management information on the Write-once optical disc that can be stored in Fig. 2 and 3 according to the present invention;

Fig. 6 shows the method for recovering the management information of Write-once optical disc according to first embodiment of the invention;

Fig. 7 shows according to the present invention on Write-once optical disc and to confirm to have write down or the method for posting field not;

Fig. 8 shows the content of the temporary defect area information of losing in the Write-once optical disc among Fig. 2 and 3 according to the present invention;

Fig. 9 shows the method that can be applicable to the recovery temporary disk (T-disk) management information of Write-once optical disc according to second embodiment of the invention;

Figure 10 shows the method that can be applicable to the recovery temporary defect district information of Write-once optical disc according to second embodiment of the invention; And

Figure 11 shows according to optical data recording/reproducing device of the present invention.

Embodiment

Now will be in detail with reference to the preferred embodiments of the present invention, its example example is in the accompanying drawings.Describe for ease, as an example, the situation of one time write-in-type blue light CD (BD-WO) will be described.

In this process; Although up to the present; The inventor has as much as possible selected widely used generic term in description of the invention; But when the implication of term when the application's relevant instructions partly is described in detail, the inventor is a term of on inventor's judgment, selecting special situation.Therefore, if, should be through understanding the present invention like the implication of the defined term of inventor.

< CD definition and disc management information >

Fig. 2 shows the structure according to the Write-once optical disc such as the BD-WO of the embodiment of the invention.The dish of Fig. 2 is the single-layered disk with a recording layer, but the present invention is what can be applicable to like the multilayer Write-once optical disc of double-deck BD-WO.

With reference to figure 2, the recording layer of dish comprises Lead-In Area, data field and leading-out zone.Spare area ISA0 and outer spare area OSA0 were used to replace defect area in the data field comprised, to carry out the physical imperfection management.Lead-In Area comprises first and second DMA (DMA1 and DMA2), and leading-out zone comprises third and fourth DMA (DMA3 and DMA4).Also provide temporary defect management area (TDMA) to be used for temporarily storing and managing defective area information.When no longer including data and will write this Write-once optical disc or response, be stored in data among the TDMA and just be transferred to and carry out nonvolatil storage among the DMA from the order of main frame or system.Usually, in view of the importance of defect management, from redundant purpose, each DMA is loaded with identical management data.

Usually, with regard to CD-RW since can be as required repeatedly write/erase many times, so do not need big DMA.Yet this is not the situation of Write-once optical disc.With regard to Write-once optical disc, in case but data are written to a posting field, and this zone just can not write data again.Thus, defect management needs bigger directorial area and/or effective directorial area structure and method.

As shown in Figure 2, TDMA comprises the TDMA1 that distributes to Lead-In Area and have fixed size, and distribute to outer spare area OSA0's and the TDMA2 that changes according to the size of this spare area of big I.For example, if the size of OSA0 is N*256 bunch, then the size of TDMA2 (P bunch) is: P=(N*256)/4.

One or more temporary defect lists (TDFL) and one or more temporary disk (T-disk) definition structure (TDDS) as management information, are written among each TDMA1 and the TDMA2.Therefore,, in a narrow sense say, be meant the information that is written among TDFL and the TDDS according to management information of the present invention.

If in data field or spare area, find defect area, then carry out the processing procedure of data being transferred to spare area from defect area.This TDFL is used for through utilizing defect area to tabulate to manage the information of a series of like this processing procedures, and writes out (being the situation of single-layered disk at this dish) according to the size of defect area tabulation with 1～4 bunch size.This TDDS writes out with the cluster size, and as shown in Figure 3, in a narrow sense says, comprises dish definition structure (DDS) information and dish user mode information (trace information or space bit map (SBM)).

In this application, term " TDDS " and " TDDS information " are interchangeable uses, and term " TDFL " and " TDFL information " also are interchangeable uses.

Optimum power calibration area (OPC district) is assigned to Lead-In Area, is used to search for optimum write power, and its structure is identical with the CD of prior art with purposes.

Through with reference to figure 3, compare with the content of describing each TDDS in more detail and with the structure of the CD-RW of correlation technique.

As shown in Figure 3, in the situation of CD-RW, DDS takies about 60 bytes, a very little part in the cluster (having 32 sectors), and rest parts is used zero padding in the cluster.Yet, in the present invention, except as with the CD-RW of prior art in beyond the 60a, the remainder 60b of a sector is used as the DDS of Write once optical disc in the same this zone of DDS (like, 60 bytes).Therefore, TDDS of the present invention is made up of the remainder 60c that is used for storing the whole sector (2048 byte) of DDS and being used for the cluster of memory disc user mode information (trace information or space bit map (SBM)).

As the part of DDS, be used for the required information of managing write-once type CD according to the present invention and comprise following information, yet also can the standard of being included in set up other required in process information.

At first, for supporting a plurality of different wiring methods, this DDS comprises that logging mode sign 62 is used to indicate specific logging mode/method.The logging mode sign 62 expression continuous recordings of ' 0000 0000b ' that for example, has value, and the logging mode sign 62 with value ' 0000 0001b ' is represented recorded at random.DDS further comprise be used for each spare area ' PSN ' of nearest TDFL ' has used last PSN ' and ' first usable spare cluster in ISA0/OSA0 ' and ' PSN ' of (n-1) individual TDDS of OPC.The PSN meaning is a physical sector number.

Next, in remaining 31 sectors (60c) of this cluster of TDDS, write down dish user mode information of the present invention.This dish user mode information is the information that changes with the use of coiling; And more specifically; In the situation of Write-once optical disc, but need this information, write/do not write the zone and obtain this zone through whole disk area is divided into the other posting field of precise search.Although it is regional as DDS that Fig. 3 discloses with first sector, front of cluster; And remaining 31 sectors of this bunch are as the zone of memory disc user mode information; But the present invention includes the zone of preceding 31 sectors of one bunch of use as memory disc user mode information, and regional with the 32nd the last sector of this bunch as DDS.

As stated, dish user mode information can be, for example trace information or SBM.If logging mode sign 62 expression continuous recordings, trace information is stored among the regional 60c as dish user mode information so.And if logging mode sign 62 is represented recorded at random, SBM is recorded in regional 10c as dish user mode information so.

Trace information is a kind of information of relevant dish user mode, and can be used on to use and have on the continuous recording dish.For example among CD and the DVD, known user mode information is RZone, fragment or the recording interval that is used for the trace information of CD and is used for DVD at the Write-once optical disc of prior art.All these various terms are called as ' trace information ' in the present invention as adopted name, and are to be understood that and are its meaning.

SBM (space bit map) is the information of another kind of indicating panel user mode, and also can be applicable to have the dish of recorded at random according to the present invention.The Zone Full that SBM can be used for coiling; Wherein (for example to each minimum record cell; Under the BD-WO situation, be one bunch) distribute a bit, if this bunch is the zone that has write, then use ' 1b ' to represent this record cell; If this bunch is not write the zone, then use ' 0b ' to represent this record cell (vice versa).Therefore, based on reading SBM information, can easily know the current zone and the state that does not write the zone of having write of Write-once optical disc.

An example of trace information is schematically explained by 64 expressions and at the right-hand component of Fig. 3.The last record position of the data of each track in the trace information indicating panel, and this trace information can comprise the information about last recording address (LRA), in its expression user area the address of last posting field.

Above-mentioned TDDS and TDFL are that to carry out the defect management of Write-once optical disc needed.Yet the situation of record TDDS and/or TDFL failure possibly take place, for example, and power fail.For this situation, the invention provides and a kind ofly coil structure and be used to recover the for example method and apparatus of TDDS and/or TDFL of management information.This dish structure is described now.

Fig. 4 shows the example according to the replacement cluster R in the spare area (for example ISA0 among Fig. 2 or OSA0) of the Write-once optical disc such as BD-WO of the present invention.As shown in Figure 4, when in the user area of Write-once optical disc or spare area, finding defective, plan to write or write have this defective bunch user data be written in the Free Region of spare area.Here, this Free Region is called replacement cluster d, and this have a defective bunch be referred to herein as defect cluster D.Known bunch is record cell and comprises one or more sectors.

Replacement cluster d comprises address area 21, user's control data zone 22 and replacement user data area 24.The address information of address area 21 storage replacement cluster d, for example, the PSN of replacement cluster d.Other information can be stored in this address area 21.The address information of defect cluster D, the PSN of this defect cluster D for example is stored in the specific region of replacement cluster d, and this specific region can be, for example, perhaps address area 21 or user's control data zone 22.This user's control data zone 22 is wherein also stored the control data that is used for replacement cluster d.24 storages of replacement user data area plan to write or write the user data of defect cluster D.

Use the dish structure among Fig. 4, will a kind of method of recovering management information according to the first embodiment of the present invention be discussed with reference to figure 5-8.In Fig. 5 and 8, dot dish/defect management information of losing, the information that promptly will recover.

As shown in Figure 5, Write-once optical disc, for example Fig. 2 and 3 dish, a plurality of TDFL of storage in TDMA such as TDMA1 (#n-1, #n ... ..) with a plurality of TDDS (#n-1, #n ... ..).Each TDFL and TDDS have the structure of being discussed as among the application.In this example, suppose that (n) individual TDDS 32 loses and defective appears at A in the data field, B, C bunch, user data is write ' a ', ' b ' in the spare area (ISA0) that replaces A, B, C bunch, ' c ' bunch respectively as a result.

Be (n) the individual TDDS 32 that recovers to lose; With reference to figure 6; When Write-once optical disc is written in the system (system shown in Figure 11 that for example will discuss) that comprises data recording/reproducing device, read (n-1) the individual TDDS 30 (Fig. 5) (step 601) that correctly is recorded on the BD-WO at the back.In case obtain this (n-1) individual TDDS, just know when writing (n-1) individual TDDS, coil the position of last posting field.For example; From this (n-1) individual TDDS; Can confirm to have used in the Lead-In Area the last PSN of OPC, can obtain to be used for the dish user mode information (trace information (use LRA) of this data field or SBM), and can obtain first usable spare cluster among the spare area ISA0/OSA0.

If confirm that next TDDS ((n) individual TDDS 32) needs to recover (step 602), check the certain applicable areas of this dish so, to obtain this (n) needed information of individual TDDS (step 603) of reconstruct.More specifically, inspection is by the zone of following after represented each the last posting field of (n-1) individual TDDS, confirms whether there is any record in that zone.This inspection is carried out through using the RF signal testing, will discuss with reference to figure 7 hereinafter.Confirm then to follow each position and address, and use these positions and address to come this (n) individual TDDS (step 604) of reconstruct by this end of record (EOR) in the zone of the represented last recording address of (n-1) individual TDDS at these.And (n) individual TDDS of reconstruct is used as (n) individual TDDS32 and is recorded in (step 604) among the TDMA1, and according to the present invention, this has accomplished the recovery to (n) the individual TDDS that loses.Step 602 can automatically be carried out or carry out according to the instruction of user or main frame.

Fig. 7 has explained the RF signal testing, and according to the present invention, it is used to determine whether that disk area is posting field or not posting field.As shown in Figure 7, utilize the RF signal can confirm on the dish record of record/(writing/do not write) zone.Usually, the RF signal can be from the writing of dish/posting field detects, and from not the writing of dish/posting field can only not detect less or not have the RF signal.Therefore, through detecting the RF signal, can detect the FA final address that has write the zone, the address that promptly (n) individual TDDS will appointment.

Processing procedure as shown in Figure 7 is carried out in each specific region to dish, obtains the information (

step

6031,6032 and 6033 among Fig. 6) of the TDDS informational needs of reconstruction of lost.For example, can confirm from the RF signal of Lead-In Area through detecting with the last PSN of OPC.Can obtain coiling user mode information (trace information (using LRA) or SBM) can obtain first usable spare cluster through detecting the RF signal that ISA0/OSA0 comes from the spare area through detecting the RF signal that comes from the data area.

Below, will the method according to a kind of recovery (n) individual TDFL of first embodiment of the invention be described with reference to figure 5-8.

The example of the structure of (n-1) the individual TDFL 40 among Fig. 5 is as shown in Figure 8.In the example of Fig. 5 and 8, (n-1) individual TDFL 40 comprises three clauses and subclauses 51, and it comprises the PSN of each defect cluster A, B, C and corresponds respectively to the PSN of the replacement cluster a of a bunch A, B, C, b, c.In other words, because the defective of bunch A, B in the data field, C, user data is write bunch a in the spare area (ISA0), b, c respectively to replace bunch A, B, C.Managed and be stored clauses and subclauses about the information of defect cluster and replacement cluster then as (n-1) individual TDFL 40.

In writing time subsequently, suppose to have found defective among bunch D in the data field.Bunch d that can be written in the spare area (ISA0) in the data that are intended to write or write bunch D replaces bunch D., owing to show the failure of this replacement in writing writing (n) individual TDFL, system or main frame do not know that this replacement writes.Like this, the method for recovering (n) individual TDFL needs, and is described below according to the present invention.

As shown in Figure 6, when dish is written into, read the reproducible correctly TDDS and the TDFL (step 601) of record, just (n-1) individual TDDS 30 and (n-1) individual TDFL 40 among Fig. 5 in system.Under the situation of above-mentioned example; From (n-1) individual TDFL shown in Figure 8, can access three positional informations 50 that are used for the clauses and subclauses of defect cluster A, B, C and from (n-1) the individual TDDS shown in Fig. 5, can access first usable spare cluster (50) among the ISA0/OSA0.In this example, the positional information 50 of first usable spare cluster that obtains from (n-1) individual TDDS, position or the start address of expression replacement cluster d.

Then, confirm in exist (6033 in the step 603) of following by any record in the zone of the first represented usable spare cluster 50 of (n-1) individual TDDS.That is to say system detects in the zone of bunch d, whether there is any record.This detection combines the RF signal testing of Fig. 7 discussion to accomplish through utilizing in the preceding text.Depend on system, step 6033 can carry out or wait according to the request from main frame carrying out (step 602) automatically.Under the situation of above-mentioned example, confirm that a bunch d has record.

Yet, in order to recover (n) individual TDFL, needing clauses and subclauses completely, it comprises the positional information corresponding to the defect cluster D of this replacement cluster d.But this positional information is not only to write down and can obtain through using the RF signal testing to confirm whether replacement cluster d has.Therefore, in order to obtain the positional information of this defect cluster D, the present invention utilizes the positional information of defect cluster D, and it is recorded in the specific region of reproducible replacement cluster d, and Fig. 4 discussed as combining in the preceding text.For example, the PSN of this defect cluster D is recorded in or user's control data zone 22 of address area 21 or replacement cluster d in.

Therefore, in the above example,, can know the positional information of defect area defect cluster D based on the user's control data zone (or address area) that reads replacement cluster d.This information is used to the last full clauses and subclauses 52 of reconstruct (n) individual TDFL as shown in Figure 8.In this example; Can be with the PSN of the replacement that obtains by step 6033 bunch d and the last full clauses and subclauses 52 of coming the individual TDFL of reconstruct (n) corresponding to the PSN of the defect cluster D of replacement cluster d, the PSN of this defect cluster D is obtained by the user's control data zone (or address area) that replaces bunch d.So can use from three clauses and subclauses 51 of (n-1) individual TDFL and come complete (n) the individual TDFL of reconstruct with the last clauses and subclauses of recovering 52.

(n) the individual TDFL that has recovered as previously discussed is written in the TDMA zone, and TDMA1 has for example accomplished the recovery processing procedure (step 604) of TDFL.

To describe term " PSN " and " last PSN " in more detail below.A record cell that has write on the dish (under the BD-WO situation be bunch) has a plurality of sectors, and a PSN is the start address of first sector, and last PSN is the start address of last sector.Therefore; The direction that increases at PSN like the service orientation of fruit tray; So can through bunch " PSN " (that is, bunch the start address of first sector) know the position of certain records unit, the direction that the direction of using like fruit tray reduces at PSN (like the OPC zone); Can know the position of certain records unit through " last PSN " (that is the start address of the last sector of this bunch) of this bunch so.According to the present invention, " positional information " means " PSN " and/or " last PSN ", but is not limited thereto, and can refer to represent the additive method of special place or position.

Referring now to Fig. 9 and Figure 10, the method according to the recovery management information of second embodiment of the present invention is discussed, the management information (for example, (n) individual TDDS and (n) individual TDFL) that it is lost from zone recovery of dish last registration.Fig. 9 has explained the treatment step that recovers (n) individual TDDS, and Figure 10 has explained the treatment step that recovers (n) individual TDFL.

For (n) the individual TDDS that recovers to lose; As shown in Figure 9; When the Write-once optical disc like Fig. 2 and 3 mid-games is loaded in the system that comprises data recording/reproducing device; The position of the last record in applicable zone on the dish (for example, spare area, data area, Lead-In Area etc.) is determined (step 901).This can accomplish through utilizing the front contact RF input that Fig. 7 discussed.Next step reads (n-1) individual TDDS (step 902) from TDMA.Afterwards will be in the positional information that step 901 obtains compare with the positional information that obtains in step 902 (step 903).If have any difference between this two parts positional information, then utilize this different information and (n-1) individual TDDS to come (n) the individual TDDS (step 904) of reconstruction of lost, its mode and foregoing first embodiment are similar.For example, the position (in the time of (n) individual TDDS) of the last record that this different information is should display disc actual, and this information is used for upgrading or change is stored in different with it information among (n-1) individual TDDS, forms (n) individual TDDS.If but do not detect difference in step 903, then system thinks and does not exist (n) individual TDDS and processing procedure to finish.

According to system, such situation can be arranged, wherein directly do not compare step 903 as (n) individual TDDS from the regional resulting positional information of coiling last record.There is not (n-1) individual TDDS, or the reliability of the data of from (n-1) individual TDDS, reproducing existing problems or this situation can occur very low the time.

Therefore, in the method according to the individual TDDS of recovery (n) of second embodiment of the invention, the zone of last record is utilized the positional information in the zone of this last record to recover (n) individual TDDS by at first definite afterwards on the dish.

In order to recover (n) individual TDFL; Shown in figure 10; When dish was loaded in the system, the posting field in the spare area of dish was reproduced (step 1001), therefrom obtained the positional information of each replacement cluster and corresponding to the positional information (step 1002) of each defect cluster of this replacement cluster.If use dish structure shown in Figure 4, this can realize so, and the two is stored in the positional information of its replacement cluster and the positional information of corresponding defective cluster in this replacement cluster.This two parts positional information is formed the recent entry among (n) individual TDFL.Detect arbitrary clauses and subclauses (step 1003) then from (n-1) the individual TDFL that is write down.Then from all clauses and subclauses that detected of step 1003 and the clauses and subclauses of having formed contrast from step 1002.If any difference is arranged, different information and all be used to make up (n) individual TDFL (step 1005) so from the clauses and subclauses of (n-1) individual TDFL.That is to say that if there are differences, the clauses and subclauses that are accumulated to (n-1) individual TDFL from the clauses and subclauses of having formed of step 1002 so are with the individual TDFL of reconstruct (n).Make is because common current TDFL should comprise the information that dish is gone up all defect district in this way.If do not detect difference in step 1004, system is thought does not so have (n) individual TDFL and processing procedure to finish.

According to system, such situation that possibly occur directly adopts two parts positional information from replacement cluster not compare step 1004 as (n) individual TDFL exactly.When there not being (n-1) individual TDFL, or the reliability of the data of reproducing from (n-1) individual TDFL is when being suspicious or very low, and this situation possibly occur.

Therefore, recover in the method for (n) individual TDFL at second embodiment according to the present invention, at first positional information is confirmed in the zone of the replacement from spare area, obtains recent entry information from this positional information, and utilizes the individual TDFL of this items for information reconstruct (n).

Figure 11 explanation is according to optical data recording/reproducing device of the present invention.This device or other suitable devices or system can be used to realize the structure and the storage of CD and recover for example above-mentioned TDFL of disc management information and the method for TDDS.

Of Figure 11, optical data recording/reproducing device comprises: recoding/reproduction unit 10, this element are used for data recording to CD with from the optical disc replay data; Controller 20 is used for controlling recording/reproduction units 10.All elements of this data recording/reproducing device connection of all working.Controller 20 transmits the instruction that is used to record the zone on the CD or reproduces from the zone on the CD to recoding/reproduction unit 10.This recoding/reproduction unit 10 reproduces data with data recording to dish or from dish according to the instruction of controller 20.Recoding/reproduction unit 10 comprises interface unit 12, pick-up unit 11, data processor 13, servo unit 14, storer 15 and microcomputer 16.Interface unit 12 is connected with the for example external unit of controller 20.Pick-up unit 11 direct record data are to CD, or from the optical disc replay data.Data processor 13 receives reproducing signal from pick-up unit 11, recovers preferred signal, and modulation signal makes it be suitable for CD, and transmits signal.Servo unit 14 control pick-up unit 11 are to read signal or to write CD to signal from CD.Storer 15 temporary storaging datas and various information comprise required disc management information.The parts of microcomputer 16 controlling recording/reproduction units 10, and carry out or control step according to the method for recovery TDFL of the present invention and TDDS.

According to first and second embodiment of the present invention, can carry out or carry out respectively the recovery of (n) individual TDDS and (n) individual TDFL simultaneously at different time.

Industrial usability

Information and previous TDDS/TDFL information from the last posting field of dish is recovered the management information (particularly TDDS and TDFL) of being lost, and stops the mistake that caused by losing of management information takes place, thereby allows more effectively use dish.

It will be apparent for a person skilled in the art that various modifications and changes may be made in the present invention.Therefore, the invention is intended to cover modification of the present invention and the variation that drops in accompanying claims and the equivalent scope thereof.

Claims

1. the method for a recovery management information from recording medium; This recording medium comprises Lead-In Area and the data field with spare area and user data area; Spare area and outer spare area in said spare area comprises; Said recording medium is included in temporary defect management area on said Lead-In Area and the said outer spare area so that storing therein temporary defect list information and temporary disk (T-disk) definition structure information, and this method may further comprise the steps:

Reproduce (n-1) individual temporary defect list information from one of said temporary defect management area, the temporary defect management area on the said Lead-In Area has fixed size, and the temporary defect management area on the said outer spare area has variable-size;

Reproduce the address information of the defect cluster of replacing by the said replacement cluster that is arranged in said spare area and the address information of said replacement cluster from replacement cluster; And

Based on n temporary defect list information of address information reconstruct of being reproduced.

2. the method for claim 1, wherein the step of n temporary defect list information of reconstruct comprises:

Address information of being reproduced and the items for information that in (n-1) individual temporary defect list information, comprises are done comparison.

3. method as claimed in claim 2, the step of n defect list information of wherein said reconstruct comprises:

If address information of being reproduced and said items for information there are differences, the items for information of the address information of then reproducing having adds in (n-1) individual temporary defect list information.

4. like each described method among the claim 1-3, wherein in the step of reproducing address information, the address information of said defect cluster is to reproduce from the address area of said replacement cluster.

5. like each described method among the claim 1-3, the address information of wherein said defect cluster is first physical sector number of said defect cluster.

6. like each described method among the claim 1-3, wherein said recording medium is a Write-once optical disc.

7. the equipment of a recovery management information from recording medium; Said recording medium comprises Lead-In Area and the data field with spare area and user data area; Spare area and outer spare area in said spare area comprises; This recording medium is included in temporary defect management area on said Lead-In Area and the said outer spare area so that storing therein temporary defect list information and temporary disk (T-disk) definition structure information, and this equipment comprises:

Interface unit is arranged to and external device communication;

Optical pick-up unit is arranged to said recording medium recording data with from said recording medium reproducing data; And

Data processor is arranged to the data that modulation receives from said optical pick-up unit;

Servo unit is arranged to the said optical pick-up unit of control from said recording medium reading of data and to said recording medium recording data;

Storer is arranged to various data and information that interim storage comprises management information;

Microcomputer; Be arranged to: control said optical pick-up unit and reproduce (n-1) individual temporary defect list information from one of said temporary defect management area; Temporary defect management area on the said Lead-In Area has fixed size, and the temporary defect management area on the said outer spare area has variable-size; Control said optical pick-up unit and reproduce the address information of the defect cluster of replacing by the said replacement cluster that is arranged in said spare area and the address information of said replacement cluster from replacement cluster; And based on n temporary defect list information of address information reconstruct of being reproduced.

8. equipment as claimed in claim 7, wherein said microcomputer are arranged to through address information of being reproduced and the items for information that in (n-1) individual temporary defect list information, comprises are compared n temporary defect list information of reconstruct.

9. equipment as claimed in claim 8; If wherein said microcomputer is arranged to the address information and the items for information of said reproduction and there are differences; Then the items for information through the address information reproduced having adds in (n-1) individual temporary defect list information, comes n temporary defect list information of reconstruct.

10. like each described equipment among the claim 7-9, the address information of wherein said defect cluster is to reveal from the address area of said replacement cluster again.

11. like each described equipment among the claim 7-9, the address information of wherein said defect cluster is first physical sector number of said defect cluster.

12. like each described equipment among the claim 7-9, wherein said recording medium is a Write-once optical disc.