| 摘要 |
PURPOSE:To effectively use the recording capacity of a medium by recording management information which cannot be stored in the capacity of a management information section set rather small in an allocated management information addition section. CONSTITUTION:Since the capacity (a) par the one document of the management information section S2 is set small, the capacity (a) may be insufficient to the length of management information to be recorded. At this time, the management information addition section S3 is set to the end of a data section S1. The section S3 allocates only the M document (M<N) of the management information area of a constant capacity (b) (b<=a) per one document. N indicates the maximum number of the documents which can be registered. accordingly, the section S3 has a smaller capacity than a section S2 and M pieces of areas of the section S3 does not correspond to document numbers 1-N. When the management information in the area (x) of the section S2 overflows, the management information for it is recorded in the area (y) of the section S3 and a pointer indicating c relation is recorded in the area (x).
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