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. 03, 1996
Filed:
Jun. 06, 1995
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);
Zitel Corporation, Fremont, CA (US);
Abstract
A fault tolerant clock system is provided by utilizing redundant clocks which are maintained in synchronization, with voting circuit serving to select one of a plurality of matching clock signals for use. A resistor is coupled in series between the crystal and the oscillation circuit in order to establish a desired duty cycle of the clock signal. A series connected diode capacitor network is connected between a node of the oscillator circuit and a power supply in order to ensure initiation of oscillation.