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. 18, 1989
Filed:
Dec. 18, 1987
Applicant:
Inventor:
Keizo Aoyama, Yamato, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ; G11C / ; G06F / ;
U.S. Cl.
CPC ...
365189 ; 365230 ; 365221 ; 364900 ;
Abstract
In a dual port type semiconductor memory device (FIFO), a register is provided between a read side of a memory cell array and a data output. When data is read from the memory cell array to the data output, a content stored in the memory cell array is transmitted in advance by a preceding read instruction clock to the register, thereby enhancing the read operation speed.