Television system having an ultrablack video signal blanking...

Details Television system having an ultrablack video signal blanking... Television system having an ultrablack video signal blanking...

H - Electricity

04

N

H04N 3/24 (2006.01) H04N 5/445 (2006.01) H04N 5/57 (2006.01)

Patent

CA 2065651

Abstract of the Disclosure An arrangement for displaying characters and/or graphics on the screen of a television system including a brightness control section for controlling the black level of video images includes a character blanking section for blanking behind the video image so as to make the characters and/or graphics more visible. The character blanking section is coupled to the brightness control section for generating an "ultra-black" character blanking level which tracks, but is slightly greater (in the black direction) than the black level for the video image.

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