Display apparatus and control method of picture thereof

Details Display apparatus and control method of picture thereof Display apparatus and control method of picture thereof

2007-06-19

2007-06-19

Hsia, Sherrie (Department: 2622)

Television

Image signal processing circuitry specific to television

Gray scale transformation

C348S679000, C348S687000

Reexamination Certificate

active

10793821

ABSTRACT:
An apparatus for and a method of continuously adjusting a brightness and a contrast of a video display. An analog video signal is converted to provide digital luminance (Y) signals and amplitudes of the digital Y signals are adjusted based on determining whether the digital Y signals of a frame have amplitudes corresponding to one or more of four regions of digital values. The four regions include a highest region, a second highest region, a lowest region and a second lowest region. Contrast is adjusted based on whether digital Y values of the frame are included for the highest region and/or the second highest region and brightness is adjusted based on whether digital Y values are included for the lowest region and/or the second lowest region.

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The First Office Action issued by the State Intellectual Property Office of People's Republic of China in Application No. 200410043335.8 dated Apr. 7, 2006 (total of 14 pages).

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