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:
Sep. 13, 1994
Filed:
Apr. 09, 1992
Applicant:
Inventor:
Akihiko Kagami, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365222 ; 365193 ; 365233 ;
Abstract
A dynamic random access memory device periodically refreshes data bits stored in the memory cells for preventing the data bits from destruction, and an autorefreshing unit incorporated in the dynamic random access memory device is responsive to a CAS-Before-RAS signal control for producing an internal row address strobe signal so that the data bits are automatically refreshed with the internal row address strobe signal in a sequence of self-refreshing cycles without any external signal control.