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:
Aug. 23, 2011
Filed:
Sep. 20, 2006
Seiji Nakamura, Osaka, JP;
Hirokazu Sou, Osaka, JP;
Seiji Nakamura, Osaka, JP;
Hirokazu Sou, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
Data is written in data areas () and information for correcting an error of the data and status information indicating that the data has been written are written in redundant areas () sequentially from the first page of a physical block (). In the step of creating information to be written in the physical block (), the redundant areas () of the pages are subjected to a binary search to temporarily identify a last valid page. Further, the contents of every area (the data areas and the redundant areas) of the temporarily identified last valid page and a page adjacent to the temporarily identified last valid page are checked to finally identify the last valid page and make a judgment as to whether or not an error page resulting from power-down exists.