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:
Nov. 20, 1990
Filed:
Nov. 08, 1988
Applicant:
Inventors:
Yasuo Torimaru, Nara, JP;
Kouji Inoue, Osaka, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365222 ; 36523003 ; 36518905 ; 36523008 ;
Abstract
In a dynamic Random Access Memory having memory cells arranged in a matrix shape, one of row decoders is designated so that the data stored in the memory cells of a row corresponding to the designated row decoder are read out. Subsequently, a row address for refreshing the memory cell array is automatically generated by a refresh address counter which is located in the dynamic Random Access Memory, thereby, the memory cells on the row of the memory cell array are refreshed without any external refresh control unit.