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:
Dec. 08, 2009
Filed:
May. 05, 2004
Atsushi Shimbo, Chiba-ken, JP;
Toshinari Takahashi, Tokyo, JP;
Ichiro Tomoda, Tokyo, JP;
Masao Murota, Kanagawa-ken, JP;
Atsushi Shimbo, Chiba-ken, JP;
Toshinari Takahashi, Tokyo, JP;
Ichiro Tomoda, Tokyo, JP;
Masao Murota, Kanagawa-ken, JP;
Kabushiki Kaisha Toshiba, Kawasaki-shi, JP;
Abstract
A file editing system that provides a high file content secrecy, a file version management and an asynchronous editing is disclosed. For a high file content secrecy, the block data of files managed by a file management server device are enciphered in units of blocks, and a client device obtains the block data of the desired file in enciphered state, deciphers the obtained block data in units of blocks, carries out an editing of the desired file to obtain editing data, enciphers the editing data in units of blocks, and transmits the enciphered editing data to the file management server device. For asynchronous editing, the system includes a unit for generating editing procedure data that indicates a procedure to obtain the editing made in the desired version of the desired file by each client device, a unit for converting the editing procedure data for the desired version of the converted desired file into the editing procedure data for the latest version of the desired file, and a unit for generating record management information indicating a result of the editing made by each client device according to the converted editing procedure data for the latest version of the desired file.