Method for controlling a color projection video system
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United States of America Patent
Stats
-
Jun 29, 1999
Issued Date -
N/A
app pub date -
Aug 18, 1997
filing date -
Oct 21, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A color control system for projection television displays having a projection lamp, a light valve and a device for varying the color of the light from the projection lamp, such as a color wheel. The color wheel driver provides an output signal which represents the position, that is the color, of the color wheel disposed in the lamp beam. The lamp driver varies the output power used to drive the lamp in response to the particular color of the color wheel disposed in the beam. If the projection lamp has a deficiency in a certain color the present system provides greater output power to the projection lamp during the presence of the filter for that color. A user input control provides for changing the tint of the system based on user preferences and/or any changes occurring in the color filters or projection lamp.
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Family
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Cited Art Landscape
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