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:
Feb. 02, 2010
Filed:
Apr. 16, 2004
Applicants:
Ta-yi Lee, Taipei, TW;
Jung-chiao Chang, Taipei, TW;
Jobs Pen, Taipei, TW;
Sherry Wang, Taipei, TW;
Vector Wang, Taipei, TW;
Inventors:
Ta-Yi Lee, Taipei, TW;
Jung-Chiao Chang, Taipei, TW;
Jobs Pen, Taipei, TW;
Sherry Wang, Taipei, TW;
Vector Wang, Taipei, TW;
Assignee:
Lite-On Technology Corporation, Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 1/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for controlling ON/OFF of LED in a scanner which replaces CCFL with LED as a light source is provided so as to solve the problem of excessively long warm-up time of CCFL in the prior art. Meanwhile, to achieve intermittent heat dissipation, LED is switched ON/OFF according to the frequency of the scanner receiving optical signals.