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:
Jun. 23, 2015
Filed:
Nov. 20, 2013
Sony Corporation, Tokyo, JP;
Kenichi Maruko, Kanagawa, JP;
Yosuke Ueno, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A clock data recovery circuit includes: an oscillator that outputs a clock signal; a phase comparator that outputs a signal corresponding to a phase difference between an input reception data signal and the clock signal; a divider that outputs a feedback clock signal; a first variable delay circuit that outputs a delay data signal; a second variable delay circuit that outputs a delay feedback clock signal; a frequency phase comparator that outputs a signal corresponding to a frequency difference and a phase difference between the delay data signal and the delay feedback clock signal; a lock detector that outputs a determination signal indicating whether or not the frequency difference and the phase difference are within a predetermined range; and a multiplexer that receives the determination signal and select a signal of the phase comparator and a signal of the frequency phase comparator.