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:
May. 01, 2018

Filed:

Oct. 31, 2014
Applicant:

Sandisk Technologies Llc, Plano, TX (US);

Inventors:

Evan Orme, Lindon, UT (US);

James G. Peterson, San Jose, CA (US);

Assignee:

SanDisk Technologies LLC, Plano, TX (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/06 (2006.01); G06F 12/02 (2006.01); G06F 11/10 (2006.01); G11C 16/16 (2006.01); G11C 29/52 (2006.01); G11C 29/04 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0619 (2013.01); G06F 3/0653 (2013.01); G06F 3/0679 (2013.01); G06F 11/1016 (2013.01); G06F 11/1044 (2013.01); G06F 11/1048 (2013.01); G06F 11/1072 (2013.01); G06F 12/0238 (2013.01); G11C 16/16 (2013.01); G06F 2212/1032 (2013.01); G06F 2212/152 (2013.01); G06F 2212/202 (2013.01); G06F 2212/214 (2013.01); G06F 2212/7205 (2013.01); G11C 29/52 (2013.01); G11C 2029/0409 (2013.01);
Abstract

A storage controller identifies a storage division comprising unreadable data. In response, the storage controller relocates readable data (if any) from the identified storage division. The storage controller may be further configured to associate the unreadable data with a logical address, and to record persistent metadata to indicate that the logical address is mapped to unreadable, corrupt data. The storage controller may clear the corruption indicator from the logical address. The logical address may be cleared in response to determining that the unreadable data is invalid and/or available from another source.


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