| 摘要 |
PROBLEM TO BE SOLVED: To additionally record data in a recording medium without using a VAT technology. SOLUTION: An area including a 256-th logical sector is reserved during the initialization of a disk, and additional recording is carried out from this reserved area and after. Additional recording is executed from a logical sector immediately after the recorded area (including reserved area) by packet writing, and AVDP is recorded in two places, i.e., the last logical sector number N of a packet structure and a logical sector before the N by 256 sectors. Thus, additional recording is permitted hereinafter according to UDF. During finalizing, AVDP is recorded in the 256-th logical sector, padding is applied to the extra area of the reserved area, and wide compatibility with a playback-only device is secured. COPYRIGHT: (C)2008,JPO&INPIT
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