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. 04, 2005
Filed:
Jan. 08, 2002
Peter David Novak, Keller, TX (US);
Angela Carol Mccrory, North Richland Hills, TX (US);
Dale Emerson Ray, Fort Worth, TX (US);
Toni Ann Long, Arlington, TX (US);
Peter David Novak, Keller, TX (US);
Angela Carol McCrory, North Richland Hills, TX (US);
Dale Emerson Ray, Fort Worth, TX (US);
Toni Ann Long, Arlington, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A redundant clock system and communications cards for utilizing the system, the system including a clock source for providing a reference signal for communication cards; an alternate clock source, coupled to the clock source, for providing an alternate reference signal for the communication cards; each of the communication cards including a clock generator, referenced to one of the reference signals for providing clock signals at frequencies corresponding to functions provided by each of the communications cards, and each of the communication cards arranged to couple to a surviving one of the reference signals when a failure of the other is detected.