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:
May. 26, 2015
Filed:
May. 27, 2014
Applicant:
Seagate Technology Llc, Cupertino, CA (US);
Inventors:
Arvind Sridharan, Longmont, CO (US);
Ara Patapoutian, Hopkinton, MA (US);
Assignee:
SEAGATE TECHNOLOGY LLC, Cupertino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 16/04 (2006.01); G11C 16/34 (2006.01); G11C 16/06 (2006.01); G11C 16/28 (2006.01); G11C 29/00 (2006.01);
U.S. Cl.
CPC ...
G11C 16/3459 (2013.01); G11C 16/0483 (2013.01); G11C 16/06 (2013.01); G11C 16/28 (2013.01); G11C 16/349 (2013.01); G11C 29/00 (2013.01);
Abstract
Cells of a solid-state, non-volatile memory are assigned to one of a plurality of groups. Each group is defined by expected symbols stored in the cells in view of actual symbols read from the cells. Based on cell counts within the groups, it can be determined that a shift in a reference voltage will reduce a collective bit error rate of the cells. The shift can be applied to data access operations affecting the cells.