Patent ID: 7698622

Claim:
An information reproducing device for reproducing main data from a disc recording medium having a data area in which the main data is recorded and a burst cutting area in which auxiliary information is recorded, the device comprising: means for acquiring the auxiliary information recorded in the burst cutting area, the auxiliary information being blocked to generate an error correction block of 32 bytes using a Reed-Solomon error correcting code having a same code length of 248 bytes, data length of 216 bytes and distance of 33 bytes as an error correcting code of the main data recorded in the data area, the auxiliary information having a length of 16 bytes which is smaller than the data length of 216 bytes of the Reed-Solomon error correcting code and fixed data filling the remaining length of 200 bytes, wherein 16 bytes of parities of 32 bytes calculated using the fixed data of 200 bytes and the auxiliary information of 16 bytes are recorded in the burst cutting area as the error correction block of 32 bytes; means for executing error correction code processing on the error correction block of 32 bytes using the fixed data of 200 bytes and pointer erasure processing on a last 16 bytes of 32 bytes of parities generated by the error correction code processing to generate 16 bytes of error corrected auxiliary information; means for reproducing the main data from the data area; means for demodulating the main data reproduced by the means for reproducing; and means for decoding the main data demodulated by the means for demodulating on the basis of the error corrected auxiliary information.