Computer graphics processing and selective visual display system – Computer graphics processing – Attributes
Reexamination Certificate
2005-06-21
2005-06-21
Tung, Kee M. (Department: 2676)
Computer graphics processing and selective visual display system
Computer graphics processing
Attributes
C345S597000, C345S601000, C345S602000
Reexamination Certificate
active
06909435
ABSTRACT:
A method (30) of reducing contouring in a liquid crystal on silicon (LCOS) display can include receiving a frame-doubled input signal (32) comprising a positive picture and a negative picture. A first dither (36) specified by a gamma table can be applied to the input signal. The first dither can selectively modify a primary-color gamma value of the negative picture or the positive picture. Also, a second dither (34) can be applied to the input signal at an input of the gamma table. The first and second dither can result in an output signal having reduced brightness level repetition for consecutive input levels.
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Digital Video (Concepts and Applications Across Industries, by Theodore S. Rzeszewski p. 42-43.
Chen Po-Wei
Fried Harvey D.
Johnson Christine
Thomson Licensing S.A.
Tripoli Joseph S.
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