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:
Aug. 09, 2005
Filed:
Mar. 26, 2004
Yi-bin Hsieh, Taipei, TW;
Yi-Bin Hsieh, Taipei, TW;
Via Technologies, Inc., Shidian, TW;
Abstract
A duty cycle correction method converts a pair of differential analog signals from an oscillator into an output pulse signal with 50% of duty cycle. The pulse signal has the same frequency as that of each of the differential analog signals. The duty cycle correction method processes the pair of differential analog signals into a first digital pulse signal and a second digital pulse signal, wherein the first digital pulse signal and the second digital pulse signal have a specified phase difference therebetween, frequency-divides the first digital pulse signal and the second digital pulse signal into a third digital pulse signal and a fourth digital pulse signal, and generates the output pulse signal according to the third and fourth digital pulse signals. The output pulse signal can be generated by performing an exclusive OR operation of the third and fourth digital pulse signals.