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:
Oct. 18, 2016
Filed:
Jun. 17, 2011
Liang-wei Huang, HsinChu, TW;
Mei-chao Yeh, HsinChu, TW;
Ting-fa Yu, HsinChu, TW;
Ta-chin Tseng, HsinChu, TW;
Liang-Wei Huang, HsinChu, TW;
Mei-Chao Yeh, HsinChu, TW;
Ting-Fa Yu, HsinChu, TW;
Ta-Chin Tseng, HsinChu, TW;
REALTEK SEMICONDUCTOR CORPORATION, Hsinchu, TW;
Abstract
The disclosure is a device and a method for Non Return to Zero (NRZ) Clock Data Recovery (CDR) calibration, which includes a CDR unit and a weight calculator unit. The CDR unit receives a compensative signal of an equalization filter to generate an error signal, a sampling clock signal, a transition sampling signal and a data signal. The weight calculator unit receives the error signal, the transition sampling signal and the data signal, and then uses a run length technique to generate weight data. The weight data controls a voltage control oscillator (VCO) which calibrates the phase and the frequency of the sampling clock signal.