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:
Jul. 11, 2006

Filed:

Aug. 13, 2004
Applicants:

Hong-ching Chen, Kao-Hsiung Hsien, TW;

Chi-ming Chang, Tao-Yuan Hsien, TW;

Inventors:

Hong-Ching Chen, Kao-Hsiung Hsien, TW;

Chi-Ming Chang, Tao-Yuan Hsien, TW;

Assignee:

Mediatek Incorporation, Hsin-Chu Hsien, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/87 (2006.01); G11B 5/09 (2006.01);
U.S. Cl.
CPC ...
Abstract

A PLL system for generating an output signal according to a first reference signal is disclosed. The output signal is used as a reference clock to write recording data on an optical medium. The PLL system includes a clock generator for receiving the first reference signal and a first frequency-divided signal to generate the output signal according to a phase difference between the first reference signal and the first frequency-divided signal; a phase-shift detector for generating a phase adjusting signal; and a phase-controllable frequency divider for dividing the frequency of the output signal by a frequency dividing ratio to generate the first frequency-divided signal and for receiving the phase adjusting signal to adjust the phase of the first frequency-divided signal.


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