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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.:

US 11409442 B1

PDFFull Text
Date of Patent:
Aug. 09, 2022

Filed:

Dec. 17, 2020

Memory system

Applicant:

Kioxia Corporation, Tokyo, JP;

Inventors:

Junji Yano, Yokohama, JP;

Hidenori Matsuzaki, Tokyo, JP;

Kosuke Hatsuda, Tokyo, JP;

Assignee:

KIOXIA CORPORATION, Tokyo, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Gary J Portka

Int. Cl.
CPC ...
G06F 3/06 (2006.01); G06F 12/02 (2006.01); G06F 12/0804 (2016.01); G06F 12/0866 (2016.01); G11C 29/00 (2006.01); G06F 11/07 (2006.01); G06F 12/0802 (2016.01); G11C 29/04 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0614 (2013.01); G06F 3/064 (2013.01); G06F 3/0631 (2013.01); G06F 3/0647 (2013.01); G06F 3/0685 (2013.01); G06F 11/073 (2013.01); G06F 12/0246 (2013.01); G06F 12/0802 (2013.01); G06F 12/0804 (2013.01); G06F 12/0866 (2013.01); G11C 29/88 (2013.01); G06F 2212/1032 (2013.01); G06F 2212/2022 (2013.01); G06F 2212/22 (2013.01); G06F 2212/7202 (2013.01); G11C 2029/0409 (2013.01); G11C 2029/0411 (2013.01);
Abstract

A memory system includes a volatile first storing unit, a nonvolatile second storing unit in which data is managed in a predetermined unit, and a controller that writes data requested by a host apparatus in the second storing unit via the first storing unit and reads out data requested by the host apparatus from the second storing unit to the first storing unit and transfers the data to the host apparatus. The controller includes a management table for managing the number of failure areas in a predetermined unit that occur in the second storing unit and switches, according to the number of failure areas, an operation mode in writing data in the second storing unit from the host apparatus.

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