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.

Date of Patent:
Mar. 22, 2016

Filed:

Jan. 31, 2013
Applicant:

Kabushiki Kaisha Toshiba, Tokyo, JP;

Inventors:

Yuki Kanamori, Urayasu, JP;

Yusuke Miyake, Kawasaki, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 7/10 (2006.01); G06F 12/02 (2006.01); G06F 7/58 (2006.01); G11C 16/34 (2006.01); G11C 11/56 (2006.01);
U.S. Cl.
CPC ...
G06F 12/0246 (2013.01); G06F 7/58 (2013.01); G11C 7/1006 (2013.01); G11C 16/3495 (2013.01); G11C 11/5628 (2013.01);
Abstract

According to one embodiment, a memory system includes a nonvolatile semiconductor storage device, a first storage module, a second storage module, a controller, a random number generator, and a randomizing module. The first storage module stores a plurality of management data. The second storage module stores seed data. The controller issues a first command to designate one of the management data, and issues a second command to command writing in or reading from the storage device. The random number generator generates random number data, by shuffling the seed data, based on the management data that is designated by the first command. The randomizing module randomizes written data or read data, based on the random number data.


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