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:
Feb. 22, 2022
Filed:
Apr. 06, 2020
Realtek Semiconductor Corporation, Hsinchu, TW;
Yao-Chia Liu, Chiayi, TW;
Bo-Yu Chen, Taichung, TW;
REALTEK SEMICONDUCTOR CORPORATION, Hsinchu, TW;
Abstract
The present disclosure provides a clock data recovery apparatus. The clock data recovery apparatus includes a phase detection circuit, a digital filter, a phase-interpolating circuit and an oscillator circuit. The phase detection circuit receives and samples a data signal according to multiple reference clock signals having different phases, to generate a phase detection result. The digital filter performs accumulation on the phase detection result, to generate a phase-adjusting signal. The phase interpolator circuit performs phase adjustment on a source clock signal according to the phase-adjusting signal, in order to generate an injection clock signal. The oscillator circuit generates the reference clock signals according to the injection clock signal, in which the phases of the reference clock signals follow the phase of the injection clock signal.