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. 29, 2014
Filed:
Sep. 07, 2012
Bin Zhang, Suzhou, CN;
Bin Zhang, Suzhou, CN;
Realtek Semiconductor Corp., Hsinchu, TW;
Abstract
A calibration device and related method for a phase difference between data signal and clock signal are disclosed. An apparatus of the invention includes: an adjustable delay circuit for delaying at least one of a first input signal and a second input signal according to a delay control signal, and generating a first signal and a second signal; a phase detection circuit for detecting a phase difference between the first signal and the second signal to output a phase difference signal; a charge pump and a capacitor for outputting a control signal according to the phase difference signal; a comparison circuit for outputting a comparison result according to the control signal; and, a digital control circuit for outputting the delay control signal according to the comparison result.