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. 03, 2017
Filed:
Jul. 09, 2015
Applicant:
Apple Inc., Cupertino, CA (US);
Inventors:
Barak Baum, Givatayim, IL;
Alex Radinski, Hadera, IL;
Eyal Gurgi, Petach Tikva, IL;
Naftali Sommer, Rishon Lezion, IL;
Tsafrir Kamelo, Rishon Lezion, IL;
Assignee:
APPLE INC., Cupertino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/14 (2006.01); G11C 29/52 (2006.01); G11C 29/04 (2006.01); G11C 29/02 (2006.01); G11C 27/00 (2006.01); G11C 16/34 (2006.01); G11C 11/56 (2006.01); G06F 11/10 (2006.01); G06F 11/07 (2006.01); G11C 16/10 (2006.01); G11C 16/28 (2006.01); G11C 29/42 (2006.01); G11C 16/26 (2006.01);
U.S. Cl.
CPC ...
G11C 16/10 (2013.01); G11C 7/14 (2013.01); G11C 11/56 (2013.01); G11C 11/5628 (2013.01); G11C 11/5642 (2013.01); G11C 16/28 (2013.01); G11C 16/3418 (2013.01); G11C 16/3459 (2013.01); G11C 27/005 (2013.01); G11C 29/021 (2013.01); G11C 29/028 (2013.01); G11C 29/42 (2013.01); G11C 16/26 (2013.01); G11C 2029/0409 (2013.01);
Abstract
A method includes storing data in memory cells by programming the memory cells with respective values. The memory cells are read in multiple readout operations that each compares the programmed values to at least first and second read thresholds, while keeping the first read threshold fixed throughout the readout operations and perturbing only the second read threshold between the readout operations. A preferred value for the second read threshold is estimated based on the multiple readout operations.