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:
Jan. 03, 1995
Filed:
Sep. 29, 1992
Applicant:
Inventors:
Robert L Papenberg, San Jose, CA (US);
Runchan D Yang, San Jose, CA (US);
David H Wotring, San Jose, CA (US);
Mohammad F Rydhan, San Jose, CA (US);
Paul Voloshin, San Jose, CA (US);
Mohamed M Talaat, Mountain View, CA (US);
Assignee:
Zitel Corporation, Fremont, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395575 ; 371 471 ; 364271 ; 3642711 ;
Abstract
A memory system in which fault tolerance is achieved utilizing redundant clocks. The redundant clocks are synchronized, and a voter is used to deselect nonmatching clocks, thereby avoiding clocking errors. A circuit is provided to ensure a nonoscillating clock provides an output level at a desired state. Another circuit is provided to ensure oscillation upon power up.