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:
Jul. 02, 2013
Filed:
Jun. 24, 2010
Chi-hung Wu, Hsinchu, TW;
Chi-Hung Wu, Hsinchu, TW;
Sunplus Technology Co., Ltd., Hsinchu, TW;
Abstract
A method and a device for determining sampling rate are provided. The device receives an input signal of SPDIF. The method includes following steps. A plurality of multiple values between a plurality of bi-phase clock frequencies of the input signal and a system frequency are obtained, and a first weighted average and a second weighted average are calculated according to a first filter range, a second filter range and the multiple values. When a first difference is greater than a second difference, the sampling rate is set to a first sampling rate. Otherwise, the sampling rate is set to a second sampling rate. The first difference and the second difference are obtained according to the first weighted average, the second weighted average and a frequency threshold. The method determines the sampling rate rapidly according to weighted averages adjusted by filter ranges, reduces a probability of erroneous judgment and saves memory.