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, 2016
Filed:
Aug. 06, 2014
Applicant:
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Inventors:
Shinji Yonezawa, Machida, JP;
Norio Aoyama, Machida, JP;
Assignee:
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11C 29/52 (2006.01); G06F 12/00 (2006.01); G06F 11/10 (2006.01);
U.S. Cl.
CPC ...
G11C 29/52 (2013.01); G06F 11/1008 (2013.01); G06F 12/00 (2013.01);
Abstract
According to one embodiment, when loading of reverse lookup information from a nonvolatile first memory to a randomly accessible second memory has failed, a controller determines whether data at a first physical address is valid or invalid by using lookup information loaded from the first memory to the second memory.