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. 23, 1983
Filed:
Nov. 26, 1980
Applicant:
Inventor:
Setsuo Kurafuji, Yokohama, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365190 ; 365205 ;
Abstract
A static type semiconductor RAM device comprising a latch circuit at every column which detects, amplifies and temporarily memorizes a read-out signal from each of the memory cells in the corresponding column and which has a large drive capacity. In the static type RAM device according to the present invention, each of the memory cells is used as an element which only holds information, and data bus lines are driven by the latch circuits having a large drive capacity, so that the slow down of the read-out speed and the decrease of reliability of read-out data of the static type RAM device having a large memory capacity is prevented.