Storage device, storage system, memory management method, recording medium, and computer data signal
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Nov 5, 2002
Grant Date -
N/A
app pub date -
Apr 18, 2000
filing date -
Apr 20, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A CPU creates a file management BSI and a file management BPT in a zone 0 included in a flash memory storing directories and an FAT, and stores the created BSI and BPT in an SRAM. In response to a command from a computer to read data, the CPU specifies and reads positions of the directories and the FAT based on the file management BPT, and sends the computer with the read data. When accessing data belong to any zone other than the zone 0, the CPU creates a general BPT again, but does not update the file management BPT. Even if data which has previously been accessed belongs to any zone, the directories and the FAT can be accessed without creating the BPT again. Updating of the directories and the FAT can be also achieved without creating the BSI again.
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