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. 07, 2013
Filed:
Mar. 13, 2012
Applicants:
Koji Nakamuta, Kawasaki, JP;
Yoshito Koyama, Kawasaki, JP;
Inventors:
Koji Nakamuta, Kawasaki, JP;
Yoshito Koyama, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A digital PLL circuit includes: a digital phase comparator to detect a phase difference between a master clock and a slave clock and output a phase difference detection value; a correction circuit to correct the phase difference detection value to a phase value in accordance with a comparison result between the phase difference detection value and a threshold; and a slave clock generation circuit to generate the slave clock in accordance with the phase value.