| 摘要 |
PROBLEM TO BE SOLVED: To improve the reliability of a device by realizing stable video recording processing even though service interruption occurs during video recording. SOLUTION: Audio video information encoded and formatted by an encoder part 50 is recorded on a disk 1001 or a hard disk through a data processor 1003. At this time, at least time map information as management information for managing data reproduction is periodically recorded as backup in a prescribed area of the hard disk from a buffer memory 52, and when restored after service interruption, the backed up time map information is utilized.
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