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:
Aug. 29, 2006
Filed:
May. 12, 2003
Applicants:
Jen-yu Hsu, Taipei, TW;
Hsiang-yi Fu, Taipei, TW;
Tun-chieh Lee, Taipei, TW;
Fu-hsiang Chen, Taipei, TW;
Yao-chou Tsai, Taipei, TW;
Inventors:
Jen-Yu Hsu, Taipei, TW;
Hsiang-Yi Fu, Taipei, TW;
Tun-Chieh Lee, Taipei, TW;
Fu-Hsiang Chen, Taipei, TW;
Yao-Chou Tsai, Taipei, TW;
Assignee:
Lite-On It Corporation, Taipei, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A DVD recognition method and apparatus is disclosed. First, a disc recognition apparatus uses a laser with a specific wavelength to irradiate an inner area of the DVD, thereby obtaining an inner TE signal. Then, the disc recognition apparatus uses the laser to irradiate an outer area of the DVD, thereby obtaining an outer TE signal. Afterward, the type of the DVD is recognized according to the inner and outer TE signals.