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.

Date of Patent:
Jun. 03, 2008

Filed:

Mar. 23, 2007
Applicants:

Tai-yuan Yu, Taoyuan County, TW;

Ping-ying Wang, Hsinchu, TW;

Ling-wei KE, Hsin-Chu Hsien, TW;

Hsin-hung Chen, Miaoli County, TW;

Inventors:

Tai-Yuan Yu, Taoyuan County, TW;

Ping-Ying Wang, Hsinchu, TW;

Ling-Wei Ke, Hsin-Chu Hsien, TW;

Hsin-Hung Chen, Miaoli County, TW;

Assignee:

Mediatek Inc., Hsin-Chu, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03C 3/00 (2006.01); H03L 7/06 (2006.01); H03L 7/16 (2006.01);
U.S. Cl.
CPC ...
Abstract

A signal generating apparatus is disclosed for generating a synthesized signal according to an input signal, the signal generating apparatus includes a phase-locked loop device for generating the synthesized signal; a control unit for controlling the control signal generator to adjust the control signal in a calibration mode to thereby adjust a frequency of the synthesized signal, wherein the phase/frequency detector does not output the detected signal to the control signal generator in the calibration mode; a detecting device for detecting the synthesized signal to generate a calibrating signal in the calibration mode; a filtering device for filtering the input signal and calibrating the input signal according to the calibrating signal to generate a filtered signal; and a modulating device for modulating the filtered signal to generate the dividing factor.


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