DISC RECORDING/REPRODUCING APPARATUS AND DISC RECORDING/REPRODUCING METHOD

摘要

In a disc drive apparatus (10), ADIP cluster addresses AC0 to AC14 are correlated to the address bits AU6 to AU20 of the address unit. Moreover, according to the sector address of the least significant 8 bits of the cluster address arranged in the ADIP address of the conventional MD, 0/1 representing the first half cluster sector addresses FC to 0D and the latter half cluster sector addresses 0E to 1F of the next generation MD (1) are correlated to the address bit AU5 of the address unit. For the 4-bit portion (110) of the address bits AU4 to AU1 lower than this, 4 bits representing each portion obtained when one recording block is divided into 16 identical portions is allocated. Thus, by using the existing recording format, it is possible to handle a high-density data capacity without trouble.