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. 22, 2017
Filed:
Jun. 18, 2015
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Yoshiharu Yoshizawa, Kawasaki, JP;
Masazumi Maeda, Yokohama, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
An electronic device includes: a voltage controlled delay line including delay elements configured to delay an input clock signal and output the clock signal, a delay control element configured to control a delay time of the clock signal delayed by the delay elements in accordance with a control voltage, a delay sensitivity adjustment circuit configured to adjust a ratio of an amount of change of the delay time to an amount of change of the control voltage, and a plurality of delay circuits; and a control voltage generation circuit configured to compare a phase of an output signal of any one of the plurality of delay circuits and a phase of the clock signal, generate the control voltage so as to match the phase of the output signal and the phase of the clock signal based on the comparison result, and output the control voltage to the delay control element.