| 摘要 |
A data recording device is provided in which FAT and directory data, which are file managing information, are protected, whereby, during a restart, the FAT and directory data can be restored to a state that was in effect directly before a file update or another file operation even when a power source is interrupted during the file operation. The data recording device comprises CompactFlash and SRAM, wherein the files are managed by a FAT file system. The CompactFlash records file data of a file, a FAT, and directory data. The SRAM is provided with a backup region. The FAT and directory data are backed up to the backup region before the FAT and directory data are updated.
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