DISK RECORDING MEDIUM AND ITS MANUFACTURING METHOD, DISK RECORDING METHOD AND DEVICE, AND DISK PLAYING METHOD AND DEVICE

摘要

PROBLEM TO BE SOLVED: To record specific information in a disk recording medium without affecting error correcting capability, to reproduce the recorded specific information. SOLUTION: An error correction code is added to copy protection information (CPID). The copy protection information is subjected to shuffling or the like to be sent as a CPID bit block to an EDC rewrite circuit 14. The EDC rewrite circuit 14 rewrites an error detection code added to the user data of each sector according to the bit information of the CPID bit block. Then, the data of each sector are subjected to scrambling, and an error correction code and a synchronous signal are added to an ECC block including a plurality of sectors to be modulated. The modulated signal is recorded in a reserve area among the lead in areas of the disk recording medium. During reproduction, the CPID is restored based on the error detection result of each sector. COPYRIGHT: (C)2007,JPO&INPIT