Television – Camera – system and detail – Combined image signal generator and general image signal...
Reexamination Certificate
2011-08-23
2011-08-23
Ye, Lin (Department: 2622)
Television
Camera, system and detail
Combined image signal generator and general image signal...
C348S228100, C348S222100
Reexamination Certificate
active
08004578
ABSTRACT:
To automatically detect and correct flickers in a video capture device, a frame number generator receives a plurality of frames and generates frame numbers. A storage device stores brightness values of partial pixels of a frame numbered 1. An extractor extracts brightness values of partial pixels of a frame numbered N. A difference summation device computes differences of the brightness values of the partial pixels of the frames numbered 1 and numbered N and sums up the differences to generate a brightness difference summation signal. A flicker detector detects a banding value in the brightness difference summation signal. A flicker corrector uses the banding value and the frame numbers to find a fixed frequency flicker effect in the frames, and generates a flicker correction signal when the fixed frequency flicker effect in the frames is found.
REFERENCES:
patent: 7034870 (2006-04-01), Nagaoka et al.
patent: 7639285 (2009-12-01), Nomura et al.
patent: 2006/0061669 (2006-03-01), Jang et al.
patent: 2007/0153094 (2007-07-01), Noyes et al.
Bacon & Thomas PLLC
Cowan Euel
Sunplus mMedia Inc.
Ye Lin
LandOfFree
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