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. 21, 1990
Filed:
Jul. 05, 1989
Hidenori Uehara, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
A dynamic random access memory system comprising a memory cell matrix, a row address decoder connected to the memory matrix and a counter for producing internal address signals to refresh the cells of the memory cell matrix. A row address buffer converts the external address signals to row address signals in response to an address buffer enabling signal, and a switching circuit connected to the counter and the row address buffer is selectively switching between the counter and the row address buffer in response to an address switching signal. A decoder circuit connected to the output of the switching circuit decodes selected address signals and provides decoded address signals to the row address decoder. A first control circuit connected to the row address buffer provides the address buffer enabling signal to the row address buffer in response to a row address strobe signal, and a second control circuit provides the address switching signal to the switching circuit in response to the row address strobe signal and a column address strobe signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile