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. 11, 2013
Filed:
Mar. 03, 2008
Applicants:
Ping Cheng, Taipei, TW;
Shang-yi Lin, Hsinchu County, TW;
Inventors:
Ping Cheng, Taipei, TW;
Shang-Yi Lin, Hsinchu County, TW;
Assignee:
Mediatek Inc., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 5/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A device for extracting a synchronization signal from a video signal has a first comparator and an adjustment circuit. The first comparator receives the video signal, compares the video signal with a first threshold, and generates the synchronization signal according to the compared result. The adjustment circuit receives the video signal, compares the video signal with a plurality of second thresholds of different values, and changes the first threshold according to the compared results.