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:
Sep. 26, 2017
Filed:
Sep. 13, 2016
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Satoshi Ide, Yokohama, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A VCO generates a clock signal. A phase and frequency detector compares phases and frequencies of the clock signal generated by the VCO and an input signal. A charge pump adjusts a control voltage of the VCO based on an output of the phase and frequency detector. An identical digit detector generates a first signal by delaying a rising timing of the input signal by a first time, generates a second signal by delaying a falling timing of the input signal by a second time, detects succession of identical digits in the input signal based on the first signal and the second signal, and stops adjustment of the control voltage by the charge pump when the identical digits succeed by a predetermined number of identical digits or more.