| 摘要 |
<p>As an example of the present invention, a disc drive apparatus (10) correlates cluster addresses AC0 to AC12 of ADIP to address units AU6 to AU18 and correlates to AU5 the upper digit of the sector address which becomes 0 for the first half clusters (sectors FC to 0D) and 1 for the second half clusters (sectors 0E to 1F). The address bit ABLG for identifying a disc recording area having a plurality of recording areas such as a land/groove recording is made 0. Each of the bits AU5 to AU18 and ABLG are correlated to the least significant 15 bits s0 to s14 of the 16-bit shift register for pseudo-random number generation. Moreover, the most significant bit s15 is correlated to 1. Thus, it is possible to improve error correction ability for high-density recording data.</p> |
