Picture projecting apparatus for a projection display system and

Details Picture projecting apparatus for a projection display system and Picture projecting apparatus for a projection display system and

1991-07-12

1992-12-15

Coles, Sr., Edward L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 60, 359 63, 359 84, H04N 930

Patent

active

051722216

ABSTRACT:
A picture projecting apparatus for a projection display system and the method thereof are disclosed. The apparatus converts color video signals which are red, green and blue colors arranged in series, to light signals which have the wavelengths of the light corresponding to the respective red, green and blue colors for a vertical scanning line, separates the red, green and blue monochromatic component lights from the converted light signals, and focuses the separated red, green and blue component lights. Accordingly, the red, green and blue color video signals converted to have a triple speed is scanned to a monochrome picture tube, to separate and reflect the light signal generated from the monochrome picture tube into red, green and blue component signals through dichroic mirrors and mirrors. At this time, according to input synchronizing signals of the red, green and blue video signals, electronic liquid crystal shutters, respectively composed of a single pixel, are driven to select separated red, green and blue component signals and focus through a lens thereby being projected on a large color screen of high resolution.

REFERENCES:
patent: 4786146 (1988-11-01), Ledebuhr
patent: 4977447 (1990-12-01), Takenaka et al.
patent: 4982276 (1991-01-01), Kawashima et al.
patent: 5083195 (1992-01-01), Evelin
patent: 5105263 (1992-04-01), Shioda

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