Storage device, storage system, memory management method, recording medium, and computer data signal
US6477616B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 18, 2000 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Apr 18, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.