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. 29, 2019
Filed:
Sep. 20, 2017
Applicant:
Sandisk Technologies Llc, Plano, TX (US);
Inventors:
Damian Yurzola, Santa Clara, CA (US);
Eran Sharon, Rishon Lezion, IL;
Idan Alrod, Herzliya, IL;
Michael Altshuler, Sunnyvale, CA (US);
Madhuri Kotagiri, Santa Clara, CA (US);
Rajeev Nagabhirava, Santa Clara, CA (US);
Assignee:
SanDisk Technologies LLC, Plano, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 29/00 (2006.01); G06F 11/10 (2006.01); G11C 29/52 (2006.01);
U.S. Cl.
CPC ...
G06F 11/1068 (2013.01); G06F 11/1012 (2013.01); G11C 29/52 (2013.01);
Abstract
In a flash memory, redundant columns are used alternatively as replacement columns for replacing bad columns or to provide additional redundancy for ECC encoding. Locations of bad columns are indicated to a soft-input ECC decoder so that data bits from bad columns are treated as having a lower reliability than data bits from other columns.