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. 12, 2016
Filed:
Aug. 01, 2014
Realtek Semiconductor Corp., Hsinchu, TW;
Yu-Che Yang, Hsinchu, TW;
REALTEK SEMICONDUCTOR CORP., Hsinchu, TW;
Abstract
A phase lock loop (PLL) device with correcting function of loop bandwidth and method thereof is related to the method including generating an output signal by a PLL circuit according to a reference signal and a feedback signal, modulating a feedback coefficient to unlock the feedback signal and the reference signal, detecting two valid crossovers of a phase difference between the reference signal and the feedback signal, calculating an oscillation frequency according to the two valid crossovers, and setting a control parameter of the PLL circuit according to the oscillation frequency. The feedback signal is related to the output signal, and there is the feedback coefficient between the feedback signal and the output signal.