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. 28, 2012
Filed:
Feb. 15, 2011
Yuki Yagishita, Kanangawa, JP;
Yasunori Tsukuda, Kanagawa, JP;
Yuki Yagishita, Kanangawa, JP;
Yasunori Tsukuda, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A phase-locked loop circuit includes: a phase and frequency comparing section configured to compare a phase of an external reference clock signal with a phase of a comparison clock signal, and generate an error signal corresponding to a result of comparison; an oscillating section configured to generate an internal clock signal of an oscillation frequency corresponding to the error signal; a frequency dividing section configured to generate the comparison clock signal by frequency-dividing the internal clock signal by a predetermined frequency dividing ratio; an oscillator control section configured to generate an oscillation control signal for controlling frequency of the internal clock signal output from the oscillating section on a basis of the error signal; and a frequency divider control section configured to generate a frequency division control signal for controlling a bias current of the frequency dividing section on a basis of the error signal.