File management device and electronic equipment

Details File management device and electronic equipment File management device and electronic equipment

2011-04-05

2011-04-05

Pham, Hung Q (Department: 2159)

Data processing: database and file management or data structures

File or database maintenance

Database recovery

C707S821000, C707S822000

Reexamination Certificate

active

07921083

ABSTRACT:
A file management device for a control system, has a file write unit which records data of a file into cluster areas of a recording medium, records file information into a directory area of recording medium, and records FAT chain information into FAT of recording medium; a file delete unit which stores file restoration information having the file information and FAT chain information into a memory area, sends back a restoration descriptor for identifying the file restoration information to control system, and deletes the file information and FAT chain information in recording medium; and a file restoration unit which reads data of deleted file from the recording medium based on the file restoration information and sends the data back to control system, and restores the file information and FAT chain information in the recording medium based on the file restoration information of the file selected by the control system.

REFERENCES:
patent: 5926821 (1999-07-01), Hirose et al.
patent: 6446091 (2002-09-01), Noren et al.
patent: 6615224 (2003-09-01), Davis
patent: 64-19443 (1989-01-01), None
patent: 3-22152 (1991-01-01), None
patent: 8-227372 (1996-09-01), None
Chinese Office Action dated Jan. 8, 2010 issued in corresponding China Patent Application No. 200710003225.2.

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