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:
Aug. 18, 2009
Filed:
Jul. 24, 2007
Applicant:
Yasuhiko Murakami, Suwa, JP;
Inventor:
Yasuhiko Murakami, Suwa, JP;
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/22 (2006.01); H03K 19/003 (2006.01); G06F 11/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A ferroelectric memory device includes: an odd number of memory regions, the odd number being at least three or higher; a readout circuit that reads data of 0 or 1 stored in the odd number of memory regions; a comparison circuit that compares readout data at corresponding addresses of the odd number of memory regions, and decides comparison data of 0 or 1 according to voting; and a write circuit that writes the comparison data in one region in the odd number of memory regions.