| 摘要 |
A data recording method is disclosed that is suitable for multi-level recording and suitable for correction of randomly occurring errors. In the recording method, sector address data are appended to user data in units of sectors, plural user data sets and the sector address data are separated and arranged to form a data block, and recording is performed so that error correcting data associated with a product code are appended to data including the user data in the data block.
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