| 摘要 |
PROBLEM TO BE SOLVED: To shorten the recording time of management information, and to effectively use the area of the management information. SOLUTION: Data is recorded by a unit smaller than a normal recording data unit to carry out properly information recording in a limited management area, and to effectively use a user data area. In this case, interleaving executed on the normal recording data is simplified, compatibility with normal data signal processing is secured to constitute data, and signal processing is carried out. COPYRIGHT: (C)2003,JPO
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