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:
May. 02, 2017
Filed:
Jul. 30, 2014
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Takahiro Shirai, Isehara, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/00 (2006.01); G06F 1/08 (2006.01); G06F 1/04 (2006.01); H03L 7/08 (2006.01); H04N 5/357 (2011.01); H04N 5/376 (2011.01);
U.S. Cl.
CPC ...
G06F 1/08 (2013.01); G06F 1/04 (2013.01); H03L 7/08 (2013.01); H04N 5/3577 (2013.01); H04N 5/3765 (2013.01);
Abstract
A spread spectrum clock generation circuit includes a generation unit configured to generate and output a spread spectrum clock based on an input reference clock, a monitoring unit configured to monitor a difference between the number of pulses of a reference clock input to the generation unit after a reference time and the number of pulses of a spread spectrum clock output from the generation unit after the reference time, and a control unit configured to control a frequency of a spread spectrum clock to be generated by the generation unit so as to make the difference fall within a predetermined range.