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:
Apr. 01, 2014
Filed:
Dec. 22, 2010
Ken Atsumi, Kawasaki, JP;
Ken Atsumi, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
There is provided a phase locked loop circuit which includes a frequency divider, a phase comparator, a filter, and an output signal oscillator. The frequency divides a feedback signal by a specific ratio and the feedback signal is used for synchronizing a phase of a reference signal and a phase of an output signal. The phase comparator compares the phases of the reference signal, the output signal, and the feedback signal and adjusts a gain of an analog signal used for generating the output signal in accordance with increase or decrease of the ratio. The filter filters the analog signal to pass signals in a specific frequency band, the gain of the analog signal having been adjusted by the phase comparator and the output signal oscillator outputs the output signal on the basis of the analog signal.