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. 20, 2012
Filed:
Feb. 26, 2010
Hideharu Kanaya, Kawasaki, JP;
Akiko Ootoshi, Kawasaki, JP;
Takashi Koguchi, Kawasaki, JP;
Kensuke Ishida, Kawasaki, JP;
Hideharu Kanaya, Kawasaki, JP;
Akiko Ootoshi, Kawasaki, JP;
Takashi Koguchi, Kawasaki, JP;
Kensuke Ishida, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A clock supply method for supplying a clock to a plurality of processing units includes supplying a clock from a first clock supply unit to processing units forming a first group as a primary clock and to processing units forming a second group as a standby clock; supplying a clock from a second clock supply unit including a clock source different from that of the first clock supply unit to the processing units forming the second group as a primary clock and to the processing units forming the first group as a standby clock; and when a processing unit in the first or second group detects an abnormality of the primary clock, switching the standby clock into use in place of the primary clock being supplied to the processing units that has detected the abnormality belongs; wherein the first and second clock supply units supply clocks with the same frequency.