Single panel color porjection video display having control circu

Television – Mechanical optical scanning – Color tv

Patent

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Details

348551, 348742, 348761, H04N 931, H04N 306, H04N 308

Patent

active

055087388

ABSTRACT:
A color projection video system utilizing only a single light valve. A white light source is separated into into red, green and blue bands. Scanning optics cause the RGB bands to be sequentially scanned across a light valve, such as a transmission LCD panel. Prior to each color passing over a given row of panels on the light valve, that row will be addressed, by the display electronics with the appropriate color content of that portion of the image which is being displayed. The image is projected by a projection lens onto a viewing surface, such as a screen. The device includes circuitry to synchronize the illumination of the light valve with the video signal and to minimize video breakup when changing video sources.

REFERENCES:
patent: 4139257 (1979-02-01), Matsumoto
patent: 4978952 (1990-12-01), Irwin
patent: 5018007 (1991-05-01), Lang et al.
patent: 5144416 (1992-09-01), Hart

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