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:
Sep. 15, 2015
Filed:
Oct. 22, 2012
Applicant:
Apple Inc., Cupertino, CA (US);
Inventors:
Tomer Ish-Shalom, Raanana, IL;
Ronen Dar, Tel Aviv, IL;
Assignee:
Apple Inc., Cupertino, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G11C 16/34 (2006.01); G11C 16/10 (2006.01); G11C 16/20 (2006.01); G11C 16/26 (2006.01);
U.S. Cl.
CPC ...
G11C 16/10 (2013.01); G11C 16/20 (2013.01); G11C 16/26 (2013.01);
Abstract
A method includes programming a group of analog memory cells by writing respective analog values into the memory cells in the group. After programming the group, the analog values are read from the memory cells in the group using a set of read thresholds so as to produce readout results. Respective optimal positions for the read thresholds in the set are identified based on the readout results. A noise level in the readout results is estimated based on the identified optimal positions of the read thresholds.