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:
Dec. 05, 2006
Filed:
Dec. 10, 2003
Applicant:
Gen Fukatsu, Osaka, JP;
Inventor:
Gen Fukatsu, Osaka, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 29/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a testing method for a semiconductor memory using a memory BIST process, when it is difficult to carry out a comparing process in one cycle, a pipelining process is used for an expected value comparison, and in this case, in order to cut the number of flip-flops and to reduce an occupied area, at the time of a memory BIST process, a pipeline-use flip-flop and a scan-observing-use flip-flop and/or a scan-control-use flip-flop are used.