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:
May. 31, 1994
Filed:
Feb. 24, 1992
Applicant:
Inventor:
Keizo Aoyama, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518904 ; 36523001 ; 36523005 ;
Abstract
A dual-port memory circuit includes a memory cell having a pair of nodes, a first port having a first pair of bit lines and a first word line connected to said memory cell, and a second port having a second pair of bit lines and a second word line connected to said memory cell. A detection circuit detects that data is written from one of the first and second ports in a state where the memory cell is selected by both the first and second ports. A control circuit decreases a potential of one of the nodes in response to a detection output of the detection circuit.