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. 15, 2013
Filed:
Mar. 21, 2011
Applicants:
Katsumi Abe, Yokohama, JP;
Masahiro Yoshihara, Yokohama, JP;
Toshiaki Edahiro, Yokohama, JP;
Inventors:
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11C 16/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
According to one embodiment, a threshold detecting method for detecting threshold values of nonvolatile semiconductor memory cells comprises applying a preset voltage to a word line connected to the memory cells, and performing bit-line sense at two different timings during discharging of one of a bit line connected to the memory cells and a node corresponding to the bit line, while a potential of the word line is kept constant.