# US 7,233,550 B2 · Write-once optical disc, and method and apparatus for recording management information on write-once optical disc > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,233,550 B2 - Document ID: US7233550B2 - Status: Granted - Kind: B2 - Application number: 10/670,196 - Filed: 2003-09-26 - Published: 2004-05-13 - Granted: 2007-06-19 - Earliest claimed: 2002-09-30 - Assignees: LG Electronics Inc. - Inventors: Yong Cheol Park; Sung Dae Kim - Web page: https://patentgrep.com/patent/US7233550B2 ## CPC - G11B 20/1883: {Methods for assignment of alternate areas for defective areas} - G11B 20/10009: {Improvement or modification of read or write signals} - G11B 20/22: for reducing distortions - G11B 2020/1288: {Formatting by padding empty spaces with dummy data, e.g. writing zeroes or random data when de-icing optical discs} - G11B 2020/1873: {Temporary defect structures for write-once discs, e.g. TDDS, TDMA or TDFL} - G11B 2220/20: Disc-shaped record carriers - G11B 2220/2541: Blu-ray discs; Blue laser DVR discs - G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R) ## Abstract A write-once optical recording medium, and a method and apparatus for recording management information on the recording medium are provided. The method includes recording, in a temporary defect management area (TDMA), management information produced while the recording medium is in use, and transferring and recording the latest management information of the TDMA in a final defect management area (DMA) of the recording medium at a DMA fill-in stage of the recording medium. ## Claims ### Claim 1 A method of recording management information on a write-once optical recording medium, the recording medium including at least one temporary defect management area (TDMA) and at least one final defect management area (DMA), the method comprising: recording, in one of the at least one TDMA, management information produced while the recording medium is in use; and recording the latest management information included in one of the at least one TDMA, in the at least one DMA when the recording medium is to be finalized, wherein after the recording medium is finalized, recording of data on the recording medium is not allowed. ### Claim 2 (depends on 1) The method of claim 1, wherein the recording medium is to be finalized when no more recording in a user data area of the recording medium is allowed. ### Claim 3 (depends on 2) The method of claim 2, wherein the latest management information includes latest temporary defect list information and latest temporary disc definition structure information associated with the recording medium. ### Claim 4 (depends on 1) The method of claim 1, wherein the recording medium is to be finalized when the TDMA is full and no more management information can be recorded in the TDMA. ### Claim 5 (depends on 4) The method of claim 4, wherein the latest management information includes latest temporary defect list information and latest temporary disc definition structure information associated with the recording medium. ### Claim 6 (depends on 1) The method of claim 1, wherein the recording medium is to be finalized in response to a user's request. ### Claim 7 (depends on 6) The method of claim 6, wherein the latest management information includes latest temporary defect list information and latest temporary disc definition structure information associated with the recording medium. ### Claim 8 (depends on 1) The method of claim 1, wherein the recording medium is a writable-once Blu-ray disc (BD-WO). ### Claim 9 (depends on 1) The method of claim 1, wherein the latest management information includes a status flag indicating a type of the finalization of the recording medium. ### Claim 10 An apparatus for recording management information on a write-once optical recording medium, the recording medium including at least one temporary defect management area (TDMA) and at least one final defect management area (DMA), the apparatus comprising: means for recording, in one of the at least one TDMA, management information produced while the recording medium is in use; and means for recording the latest management information included in one of the at least one TDMA, in the at least one DMA when the recording medium is to be finalized, wherein after the recording medium is finalized, it is not allowed to record data on the recording medium. ### Claim 11 A write-once optical recording medium for recording management information thereon, the recording medium comprising: at least one recording layer including at least one temporary defect management area (TDMA) and at least one final defect management area (DMA) for recording, wherein management information produced while the recording medium is in use is recorded in one of the at least one TDMA, the latest management information included in one of the at least one TDMA is recorded in the at least one DMA when the recording medium is finalized, and after the recording is finalized, recording of data on the recording medium is not allowed. ### Claim 12 (depends on 11) The recording medium of claim 11, wherein the recording medium is to be finalized when no more recording in a user data area of the recording medium is allowed. ### Claim 13 (depends on 12) The recording medium of claim 12, wherein the latest management information includes latest temporary defect list information and latest temporary disc definition structure information associated with the recording medium. ### Claim 14 (depends on 11) The recording medium of claim 11, wherein the recording medium is to be finalized when the TDMA is full and no more management information can be recorded in the TDMA. ### Claim 15 (depends on 14) The recording medium of claim 14, wherein the latest management information includes latest temporary defect list information and latest temporary disc definition structure information associated with the recording medium. ### Claim 16 (depends on 11) The recording medium of claim 11, wherein the recording medium is to be finalized in response to a user's request. ### Claim 17 (depends on 16) The recording medium of claim 16, wherein the latest management information includes latest temporary defect list information and latest temporary disc definition structure information associated with the recording medium. ### Claim 18 (depends on 11) The recording medium of claim 11, wherein the recording medium is a writable-once Blu-ray disc (BD-WO). ### Claim 19 (depends on 11) The recording medium of claim 11, wherein the latest management information includes a status flag indicating a type of the finalization of the recording medium.