| 摘要 |
PROBLEM TO BE SOLVED: To prevent disappearance of required information by taking over and utilizing required information recorded at the time of recording format of one at the time of recording format of the other, even if recording is changed from recording format of one to recording format of the other. SOLUTION: In a file management method by which a plurality of recording formats can be recorded in a rewritable recording medium, a common file of which contents are information which can be utilized when recording is performed with each recording format is provided, when the recording format is changed, the common file is taken over from a recording format before change. The common file manages the number of times of recording for a recording region of the management information. COPYRIGHT: (C)2004,JPO&NCIPI
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