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. 05, 2014
Filed:
Jul. 31, 2009
Applicants:
Rangaswamy Arumugham, Plano, TX (US);
Stuart Haden, Lucas, TX (US);
Mark A. Shaw, Sachse, TX (US);
Inventors:
Assignee:
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 11/00 (2006.01); G06F 1/10 (2006.01); G06F 11/16 (2006.01); G06F 11/20 (2006.01);
U.S. Cl.
CPC ...
G06F 11/1604 (2013.01); G06F 11/20 (2013.01); G06F 11/004 (2013.01); G06F 1/10 (2013.01);
Abstract
To provide fault-tolerant, spread spectrum clock signals, a plurality of processing modules having respective spread spectrum control circuits are provided. Clock signals of redundant clock sources are provided to the plurality of processing modules. Failover control logic selects a corresponding one of the clock signals from the redundant clock sources for use in each of the processing modules. Frequency spreading is applied to the corresponding selected clock signal in each of at least some of the plurality of processing module.