| 摘要 |
The exclusive OR (XOR) of user data (sector) 0 , user data (sector) 1 and user data (sector) 2 is taken to have the virtual user data, thereby giving rise to a correlation of the sectors 0 to 2 , and its virtual user data is appended with C 2 having a greater error correction capability than C 1 , whereby an error uncorrectable with C 1 is correctable with C 2.
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