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:
Sep. 23, 2003
Filed:
Oct. 16, 2001
Applicant:
Inventor:
Naoya Haneda, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 1/200 ; G06F 1/730 ;
U.S. Cl.
CPC ...
G06F 1/200 ; G06F 1/730 ;
Abstract
File management information for managing logical sequence of files recorded in a recording medium is formed and stored in a file management information storing unit. Block management information which includes a file number for identifying a file, sequential order number indicative of the sequential order of the block storing data of the file and page length information indicative of the size of the data stored in the block is formed and stored in a block management information storing unit. Access to the file is ensured based on the block management information, even when the file management information indicative of the logical sequence of the files is lost by accident.