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.

Date of Patent:
Jul. 02, 2019

Filed:

Mar. 16, 2018
Applicant:

Storart Technology Co., Ltd., Hsinchu, TW;

Inventors:

Hsiang-En Peng, New Taipei, TW;

Sheng-Wei Yuan, Hsinchu, TW;

Hou-Yun Lee, Hsinchu, TW;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/34 (2006.01); G11C 16/06 (2006.01); G11C 29/50 (2006.01); G11C 16/26 (2006.01); G11C 29/42 (2006.01);
U.S. Cl.
CPC ...
G11C 29/50004 (2013.01); G11C 16/26 (2013.01); G11C 29/42 (2013.01); G11C 2029/5004 (2013.01);
Abstract

A method and a system for determining bit values in a non-volatile memory having a number of cells each for storing a bit value are disclosed. The method includes the steps of: a) providing a first test sensing voltage to the cells and calculating a cell count; b) providing another test sensing voltage to the cells and calculating a difference of the cell counts between this step and previous step; c) providing still another test sensing voltage and calculating another difference of the cell counts between this step and previous step; d) processing step c) for N times; e) calculating differential amounts of cell counts and assigning an index number to each group of cells; f) choosing a voltage as an updated sensing voltage.


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