Optics: image projectors – Lamp control
Reexamination Certificate
2007-05-22
2007-05-22
Koval, Melissa Jan (Department: 2851)
Optics: image projectors
Lamp control
C353S088000, C353S097000, C353S121000, C348S744000
Reexamination Certificate
active
10913744
ABSTRACT:
The present invention is a method and apparatus for increasing the effective contrast ratio and brightness yields for digital light valve image projectors using a variable luminance control mechanism (VLCM), associated with the projector optics, for modifying the light output and providing a correction thereto. Also included is an adaptive luminance control module (ALCM) for receiving signals from the video input board, the adaptive luminance control module producing a signal on a VLCM bus connecting the variable luminance control mechanism and the adaptive luminance control module, wherein the signal causes the variable luminance control mechanism to change the luminance of the light output and provide a corrected video signal for the projector.
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Allen Eddie E.
Coley Christopher
Strade Thomas D.
Stone Gregory M.
Whiteford Taylor & Preston
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