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. 25, 2016
Filed:
Oct. 15, 2015
Applicants:
Kwanghoon Kim, Uiwang-si, KR;
Younggeon Yoo, Seoul, KR;
Junjin Kong, Yongin-si, KR;
Inventors:
Assignee:
Samsung Electronics Co., Ltd., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/34 (2006.01); G11C 16/26 (2006.01); G11C 16/04 (2006.01);
U.S. Cl.
CPC ...
G11C 16/26 (2013.01); G11C 16/0483 (2013.01);
Abstract
An operation method of a nonvolatile memory system in accordance with example embodiments of inventive concepts includes detecting an on-cell count of the memory cells using a sampling start voltage, comparing the detected on-cell count with a reference value, setting a plurality of sampling voltages based on the comparison result, performing a sampling operation with respect to the memory cells using the sampling voltages, and detecting an optimum read voltage for distinguishing any one program state among the program states based on a result of the sampling operation.