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:
Aug. 14, 2018

Filed:

Oct. 20, 2016
Applicant:

Seagate Technology Llc, Cupertino, CA (US);

Inventors:

Zhengang Chen, San Jose, CA (US);

Earl T. Cohen, Oakland, CA (US);

Alex G. Tang, Cupertino, CA (US);

Assignee:

SEAGATE TECHNOLOGY LLC, Cupertino, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 3/06 (2006.01); G11C 7/24 (2006.01); G11C 8/20 (2006.01); G11C 11/56 (2006.01); G11C 16/10 (2006.01); G11C 16/22 (2006.01); G11C 16/26 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0619 (2013.01); G06F 3/0647 (2013.01); G06F 3/0679 (2013.01); G11C 7/24 (2013.01); G11C 8/20 (2013.01); G11C 11/5628 (2013.01); G11C 16/10 (2013.01); G11C 16/225 (2013.01); G11C 16/26 (2013.01);
Abstract

A method for recovery after a power failure. The method generally includes a step of searching at least some of a plurality of pages of a memory to find a first erased page in response to an unsafe power down. A step may move stored data located between a particular word line in the memory that contains the first erased page and a previous word line that is at least two word lines before the particular word line. Another step may write new data starting in a subsequent word line that is the at least two word lines after the particular word line that contains the first erased page.


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