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. 01, 1987
Filed:
Sep. 07, 1984
Applicant:
Inventor:
Akira Nagami, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365149 ;
Abstract
An improved semiconductor memory, suitable for a video system, includes a memory cell array, a first access circuit operatively performing a write operation and a read operation to the memory cell array, and a second access circuit operatively performing a read operation to the memory cell array in response to different groups of address signals from those applied to the first access circuit. The two access circuits can operate asynchronously and can simultaneously access the memory.