Ambient light derived from video content by mapping...

Details Ambient light derived from video content by mapping... Ambient light derived from video content by mapping...

2011-04-26

2011-04-26

Lee, M. (Department: 2422)

Television

Image signal processing circuitry specific to television

Display controlled by ambient light

C348S832000

Reexamination Certificate

active

07932953

ABSTRACT:
Extracting and processing video content encoded in a rendered color space to be emulated by an ambient light source, comprising extracting color information from a video signal and transforming the color information through unrendered color space using tristprimary matrices to form a second rendered color space to drive the ambient light source. Video signal decoding into frames can allow extracting average or other color information from an selected screen regions to reduce bitstream load, and negative gamma correction helps prevent garish or inappropriate chromaticities and luminance.

REFERENCES:
patent: 2665419 (1954-01-01), Van Orden
patent: 6611297 (2003-08-01), Akashi et al.
patent: 6717376 (2004-04-01), Lys et al.
patent: 7234814 (2007-06-01), Morita et al.
patent: 06076958 (1994-03-01), None

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