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. 06, 2010
Filed:
Nov. 08, 2006
Koji Sakui, Tokyo, JP;
Kazuhiro Suzuki, Kanagawa, JP;
Daisuke Yoshioka, Kanagawa, JP;
Kazuto Kamimura, Kanagawa, JP;
Takeshi Ishimoto, Tokyo, JP;
Jun Sumino, Kanagawa, JP;
Koji Sakui, Tokyo, JP;
Kazuhiro Suzuki, Kanagawa, JP;
Daisuke Yoshioka, Kanagawa, JP;
Kazuto Kamimura, Kanagawa, JP;
Takeshi Ishimoto, Tokyo, JP;
Jun Sumino, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A memory system including a nonvolatile semiconductor storage device includes: a nonvolatile memory unit that includes a first data area in which data is frequently rewritten and a second data area in which data is hardly rewritten; and a control unit. The control unit sequentially selects logical block addresses in the second data area in which data is hardly rewritten and updates physical block addresses at new rewriting destinations in the first data area in which data is frequently rewritten to physical block addresses corresponding to the logical block addresses selected.