The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 05, 2011
Filed:
Jan. 09, 2007
Hiroyuki Komori, Kawasaki, JP;
Yuya Tagami, Kawasaki, JP;
Hiroyuki Komori, Kawasaki, JP;
Yuya Tagami, Kawasaki, JP;
Fujitsu Semiconductor Limited, Yokohama, JP;
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.