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:
Jun. 19, 2007
Filed:
Dec. 04, 2003
Applicants:
Yi-lin Lai, Taipei Hsien, TW;
Chin-yin Tsai, Taipei Hsien, TW;
Hung-chang Chen, Taipei Hsien, TW;
Inventors:
Assignee:
Via Technologies Inc., Hsin-Tien, Taipei Hsien, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/13 (2006.01); H01S 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and related apparatus for feedback control of laser power provided by a pick-up head of an optical disk drive. The pick-up head can adjust a cross-voltage of a laser generator according to a signal level of a control signal such that the laser power is changed correspondingly. The method includes updating the signal level of the control signal according to feedback of the cross-voltage or the control signal, such that the laser power is adjusted accordingly.