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:
Apr. 03, 2007
Filed:
Nov. 15, 2005
Applicants:
Masanori Shirahama, Shiga, JP;
Masashi Agata, Osaka, JP;
Toshiaki Kawasaki, Osaka, JP;
Ryuji Nishihara, Osaka, JP;
Inventors:
Masanori Shirahama, Shiga, JP;
Masashi Agata, Osaka, JP;
Toshiaki Kawasaki, Osaka, JP;
Ryuji Nishihara, Osaka, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Selection signals output from a decoder are selectively set at High according to the states (blown or not blown) or fuses in bit cells in a cell group specifying circuit. Then, one of transistor gates is turned ON so that a data bit cell group in/from which data is written and read out is selected. Accordingly, stored data can be rewritten multiple times by sequentially blowing the fuses in the cell group specifying circuit.