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:
Oct. 04, 2016
Filed:
Apr. 25, 2014
Applicant:
Sandisk Technologies Inc., Plano, TX (US);
Inventors:
Assignee:
SanDisk Technologies LLC, Plano, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 16/06 (2006.01); G11C 29/00 (2006.01); G11C 16/10 (2006.01); G11C 16/04 (2006.01);
U.S. Cl.
CPC ...
G11C 29/765 (2013.01); G11C 16/0483 (2013.01); G11C 16/10 (2013.01); G11C 29/70 (2013.01); G11C 29/76 (2013.01); G11C 29/82 (2013.01); G11C 29/88 (2013.01);
Abstract
A system handles bad blocks in block-based NAND memory by remapping wordlines that are unusable. Rather than eliminate usage of an entire block, the system may dynamically remap the block to exclude only the unusable wordlines. The partial blocks utilize portions of the memory with good wordlines and the portions of memory with bad wordlines are redirected to one or more replacement blocks.