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:
Feb. 12, 2013
Filed:
Dec. 07, 2011
Yen-yin Huang, Taoyuan County, TW;
Ken-yi Pan, New Taipei, TW;
Ming-shih Yu, New Taipei, TW;
Faraday Technology Corp., Science-Based Industrial Park, Hsin-Chu, TW;
Abstract
A frequency locking method, for locking an output signal outputted from a frequency locking circuit to a target frequency, comprising: (a) detecting an output frequency of the output signal, wherein the output signal is generated according to an oscillating frequency of a controllable oscillator; (b) computing a frequency difference between the output frequency and the target frequency; (c) utilizing a controllable factor adjusting device to provide and to adjust a normalization factor according to the frequency difference, to anticipate a gain of the controllable oscillator and to provide a control signal related with the normalization factor and the frequency difference, wherein the output frequency is related with a product of the normalization factor and the gain of the controllable oscillator; and (d) controlling the controllable oscillator according to the control signal, such that the output frequency approaches to the target frequency.