Patent ID: 7861142

Claim:
An information recording device for recording main data onto a disc recording medium having a data area for recording the main data and a burst cutting area for recording auxiliary information, the device comprising: first acquisition means for acquiring the auxiliary information recorded in the burst cutting area, the auxiliary information being blocked to generate error correction blocks based on an error correction code with a header added thereto, the header containing an identification number and a block number; control means for performing control so that when said auxiliary information is double-written in first and second error correction blocks, said first and second error correction blocks have identical block numbers written therein, and when the auxiliary information is written over a plurality of error correction blocks, the plurality of error correction blocks have block numbers that are serial numbers; second acquisition means for acquiring the main data; encryption means for encrypting the main data acquired by the second acquisition means on the basis of the identification number of the auxiliary information acquired by the first acquisition means; modulation means for modulating the main data encrypted by the encryption means; and recording means for recording the main data modulated by the modulation means into the data area on the disc recording medium.