Television – Image signal processing circuitry specific to television – Display controlled by ambient light
Patent
1997-09-30
1998-12-29
Kostak, Victor R.
Television
Image signal processing circuitry specific to television
Display controlled by ambient light
348687, 345102, H04N 557
Patent
active
058546618
ABSTRACT:
A system and method for subtracting reflection images, caused by proximately located light sources, from an image displayed on a video display screen. The present invention includes a camera mounted in close proximity to a video display device having a display screen, and oriented to point towards a user. The camera is connected to a control unit capable of image processing and of adjusting the images displayed on the display screen. Light from the proximately located light source falls upon the display screen causing glare from the light source and forming reflection images of the user and other objects on the display screen. In order to eliminate these undesirable reflection images from the display screen, the control unit first locates the reflection images on the display screen, and then eliminates these images by adjusting the brightness values of the reflection images' pixels.
REFERENCES:
patent: 4997203 (1991-03-01), Cohen et al.
patent: 5057744 (1991-10-01), Barbier et al.
patent: 5585841 (1996-12-01), Hardin
patent: 5617112 (1997-04-01), Yoshida et al.
Kostak Victor R.
Lucent Technologies - Inc.
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