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:
Mar. 05, 1985
Filed:
Apr. 07, 1982
Applicant:
Inventors:
Ashgar K Malik, Escondido, CA (US);
John A Celio, San Diego, CA (US);
Assignee:
NCR Corporation, Dayton, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365222 ;
Abstract
A time-of-day counter having a plurality of register stages for counting system clock pulses and for providing signals indicative of the status of each of the register stages is coupled by a bus to a dynamic memory of the type requiring a refresh cycle. Logic means operatively coupled to the time-of-day counter operate to pass the signals present at the output of the time-of-day registers onto the bus as memory address signals so as to effectively utilize the output signals of the time-of-day counter to periodically address all portions of the memory and to provide a refresh signal as each portion of the memory is addressed.