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:
Oct. 05, 2010
Filed:
Oct. 25, 2006
Applicants:
Yuan Wang, Beijing, CN;
Song Qiu, Beijing, CN;
Assignees:
Vimicro Corporation, Beijing, CN;
Wuxi Vimicro Corporation, Wuxi, Jiangsu, CN;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04N 7/01 (2006.01); H04N 11/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
Techniques for distinguishing a pulldown field sequence from a normal field sequence are disclosed. According to one aspect of the techniques, the method for detecting pulldown field sequence comprises receiving a field sequence, combining two adjacent fields into one frame, detecting whether the combined frame has a combing phenomenon, if there is such a combing phenomenon, and determining a number of how many times the combing phenomenon occurs continuously in the combined frame. Based on the number, it can be determined whether the field sequence is a normal field sequence or a pulldown field sequence.