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, 2012
Filed:
Feb. 25, 2010
Chen-chih Huang, HsinChu, TW;
Chen-Chih Huang, HsinChu, TW;
Realtek Semiconductor Corp., Hsinchu, TW;
Abstract
A frequency detection apparatus and method are provided. The frequency detection apparatus includes a frequency conversion circuit and an analog conversion circuit. The frequency conversion circuit receives an input clock, and generates an analog signal corresponding to a frequency of the input clock based on the frequency of the input clock. The analog conversion circuit is coupled to the frequency conversion circuit, receives the analog signal, and generates a discriminating signal corresponding to the frequency of the input clock based on the analog signal, where the discriminating signal represents a frequency interval of the input clock.