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.:

US 7379400 B1

PDF
Full Text
Expired
Date of Patent:
May. 27, 2008

Filed:

May. 20, 2005
Applicants:

Han-wen Hsu, Hsinchu, TW;

Chi-pei Huang, Miaoli, TW;

Inventors:

Han-Wen Hsu, Hsinchu, TW;

Chi-Pei Huang, Miaoli, TW;

Assignee:

Mediatek Inc., Hsin-Chu, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An optical data recording/reproducing system comprises a data slicer and a data extractor, wherein the data slicer receives the analog RF signal from the identification area and generates a digital mask signal and a digital pulse signal, and the reference clock generator comprises a phase-locked loop for receiving the digital pulse signal and the digital mask signal and generates the reference clock signal to the data extractor by performing phase-locked loop control, so that the data extractor extracts an identification area data signal and an identification area clock signal from the digital mask signal according to the reference clock signal.


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