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:
Jun. 19, 2007
Filed:
Feb. 23, 2005
Hsu-feng Ho, Taipei, TW;
Shun-yung Wang, Taichung Hsien, TW;
Hsu-Feng Ho, Taipei, TW;
Shun-Yung Wang, Taichung Hsien, TW;
Mediatek Inc., Hsinchu, TW;
Abstract
A phase difference between a first periodic signal, and a sample signal corresponding to a second periodic signal and having a predetermined signal resolution M is calculated in a phase comparing method. The sample signal is obtained by sampling the second periodic signal at a sampling frequency ffor one signal cycle of the second periodic signal when a frequency of the second periodic signal is not greater than an allowable sampling signal frequency fequal to f/M or by conducting at least one of sampling the second periodic signal at ffor more than one signal cycle of the second periodic signal, and generating interpolated values for the sample signal after sampling the second periodic signal at fin accordance with whether or not M/N yields a remainder and whether or not N is a prime number when the frequency of the second periodic signal is greater than and is N times f.