# US 8,472,296 B2 · Information recording medium, recording/reproducing apparatus, and recording/reproducing method to distinguish between an original recording block and a replacement recording block > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,472,296 B2 - Document ID: US8472296B2 - Status: Granted - Kind: B2 - Application number: 13/352,417 - Filed: 2012-01-18 - Published: 2012-05-10 - Granted: 2013-06-25 - Earliest claimed: 2004-07-30 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Sung-hee Hwang; Jung-wan Ko - Inventors: Sung-hee Hwang; Jung-wan Ko - Web page: https://patentgrep.com/patent/US8472296B2 ## CPC - G11B 27/3027: {used signal is digitally coded} - G11B 20/1217: {on discs} - G11B 20/1883: {Methods for assignment of alternate areas for defective areas} - G06F 3/0619: {in relation to data integrity, e.g. data losses, bit errors} - G06F 3/064: {Management of blocks} - G06F 3/0677: {Optical disk device, e.g. CD-ROM, DVD} - G11B 2020/10907: {using pseudo-overwriting, i.e. virtually or logically overwriting data on WORM media by remapping recorded blocks to alternate areas} - G11B 2020/1873: {Temporary defect structures for write-once discs, e.g. TDDS, TDMA or TDFL} - G11B 2020/1893: {using linear replacement to relocate data from a defective block to a non-contiguous spare area, e.g. with a secondary defect list [SDL]} - G11B 2220/20: Disc-shaped record carriers - G11B 2220/218: Write-once discs - 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) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract An information recording medium, and a recording/reproducing apparatus and a recording/reproducing method for the recording medium. Original data is sequentially updated by replacing an original recording block with one or more replacement recording blocks. A replacement recording block includes at least one of an original address field indicating a location of the original recording block or a previous address field indicating a location of an immediately previous recording block. Replacement information is effectively recovered in a system where a replacement for logical overwriting (LOW) occurs in either a spare area and a user data area by reference to the address fields in each replacement recording block. ## Claims ### Claim 1 An information recording medium comprising: a first recording unit block comprising user data; a second recording unit block replacing the first recording unit block; and a defect list entry, wherein the first recording unit block and the second recording unit block respectively comprise information identifying whether the corresponding recording unit block is a replacement block; and replacement data stored in the second block is reproduced using the defect list entry, wherein the second recording unit block is selected in a user data area of the information recording medium in response to a command to record second data in the first recording unit block in which first data already has been recorded, the second recording unit block has a logical address identical to a logical address of the first recording unit block, and the defect list entry comprises physical address information of the first recording unit block, and physical address information of the second recording unit block. ### Claim 2 A recording/reproducing apparatus comprising: a write/read unit to write data on and/or read data from an information recording medium; and a controller to control the write/read unit to write, on the information storage medium: a second recording unit block replacing a first recording unit block recorded on the information recording medium; and a defect list entry, wherein the first recording unit block and the second recording unit block respectively comprise information identifying whether the corresponding recording unit block is a replacement block; and replacement data stored in the second recording unit block is reproduced using the defect list entry, wherein the second recording unit block is selected in a user data area of the information recording medium in response to a command to record second data in the first recording unit block in which first data already has been recorded, the second recording unit block has a logical address identical to a logical address of the first recording unit block, and the defect list entry comprises physical address information of the first recording unit block, and physical address information of the second recording unit block. ### Claim 3 A reproducing apparatus for reproducing data from an information recording medium, the information storage medium comprising a first recording unit block comprising user data, and a second recording unit block replacing the first recording unit block, the reproducing apparatus comprising: a write/read unit to write data on and/or read data from the information recording medium; and a controller to control the write/read unit to: read, from the information storage medium, a defect list entry; and read replacement data stored in the second recording unit block using the defect list entry; wherein the first recording unit block and the second recording unit block respectively comprise information identifying whether the corresponding recording unit block is a replacement block, and wherein the second recording unit block is selected in a user data area of the information recording medium in response to a command to record second data in the first recording unit block in which first data already has been recorded; the second recording unit block has a logical address identical to a logical address of the first recording unit block, and the defect list entry comprises physical address information of the first recording unit block, and physical address information of the second recording unit block. ### Claim 4 A recording method for recording data on an information recording medium, the recording method comprising: recording, on the information storage medium: a second recording unit block replacing a first recording unit block recorded on the information recording medium; and a defect list entry, wherein the first recording unit block and the second recording unit block respectively comprise information identifying whether the corresponding recording unit block is a replacement block; and replacement data stored in the second recording unit block is reproduced using the defect list entry, wherein the second recording unit block is selected in a user data area of the information recording medium in response to a command to record second data in the first recording unit block in which first data already has been recorded, the second recording unit block has a logical address identical to a logical address of the first recording unit block, and the defect list entry comprises physical address information of the first recording unit block, and physical address information of the second recording unit block. ### Claim 5 A reproducing method for reproducing data from an information recording medium, the information storage medium comprising a first recording unit block comprising user data, and a second recording unit block replacing the first recording unit block, the method comprising: reading, from the information storage medium, a defect list entry, reproducing replacement data stored in the second recording unit block using the defect list entry; wherein the first recording unit block and the second recording unit block respectively comprise information identifying whether the corresponding recording unit block is a replacement block, and wherein the second recording unit block is selected in a user data area of the information recording medium in response to a command to record second data in the first recording unit block in which first data already has been recorded, the second recording unit block has a logical address identical to a logical address of the first recording unit block, and the defect list entry comprises physical address information of the first recording unit block, and physical address information of the second recording unit block.