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:
Feb. 19, 2013
Filed:
Oct. 19, 2010
Applicants:
Makoto Kitagawa, Kanagawa, JP;
Tsunenori Shiimoto, Kanagawa, JP;
Hiroshi Yoshihara, Yokohama, JP;
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/00 (2006.01); G11C 7/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A memory device includes: a memory unit in which an electric charge discharging rate between two electrodes is different in accordance with logic of stored information; a sense amplifier that detects the logic of the information by comparing a discharge electric potential of a wiring to which one electrode of the memory unit is connected with a reference electric potential; and a replica circuit that has a replica unit emulating the memory unit and controls a sense timing of the sense amplifier in accordance with a discharge rate of the replica unit.