G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 20/18 (2006.01) G11B 7/0037 (2006.01) G11B 7/004 (2006.01) G11B 7/007 (2006.01) G11B 7/125 (2006.01) G11B 20/14 (2006.01)
Patent
CA 2407011
First data representing user data and third data use the same error correction codes. The first data has a first error correction block structure and the third data has a second error correction block structure. That is to say, the first data and the third data have their respective error correction block structures proper for them. In particular, the recording density of the third data is made less dense than the recording density of the first data, and the number of correction codes in the first error-correction block is set at a multiple of m whereas the number of correction codes in the second error-correction block is set at n/m times the number of correction codes in the first error-correction block so that a data-piece count in the second error-correction block is also n/m times a data-piece count in the first error-correction block. As a result, it is possible to provide a good technique of recording shipping-time information onto a high-recording-density disc.
Gowling Lafleur Henderson Llp
Sony Corporation
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