Method and circuit for adjusting background contrast in a display device
AssigneeSamsung Electronics Co., Ltd.
InventorsJae-Sung Kang, Im-Soo Kang, Jae-Bong Choi, Ji-Hyun Lee
Life of this patent
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Abstract
A method for adjusting the contrast of a background region in a display device is provided. A video signal for a background region is received in a background region mode. The gain of the video signal is adjusted responsive to a background region control signal thereby adjusting the contrast of the background region. The result is a high quality display device.
Claims18
A method for adjusting the contrast of a background region in a display device, comprising:
- receiving a video signal defining the background region;
- setting a gain of the video signal responsive to a control signal;
- and
- adjusting a contrast of the background region after adjusting the gain.
A method for adjusting the contrast of a background region in a display device, comprising:
- selecting predetermined coordinates;
- setting a highlighting region corresponding to the predetermined coordinates;
- receiving a video signal for a background region, the background region being an outer region of the highlighting region;
- and
- setting a gain of the video signal for the background region responsive to a background control signal.
A circuit for adjusting a contrast of a background region in a display device, comprising:
- a transmission circuit adapted to transmit a background video signal indicative of a background region;
- and
- a control circuit adapted to adjust a contrast of the background region by adjusting a gain of the background video signal responsive to a background control signal.
A circuit for adjusting a contrast of a display device, comprising:
- a background region;
- a highlight region set by predetermined coordinates, the background region being an outer region of the highlight region;
- a highlighting region contrast control circuit that receives a video signal for the highlight region responsive to a highlight enable signal and controls a gain of the video signal for the highlight region responsive to a highlight region control signal;
- and
- a background region contrast control circuit that receives a video signal for the background region responsive to a background enable signal and controls a gain of the video signal for the background region responsive to a background region control signal.
Dependencies are inferred from the claim text.