Scanned beam color video generator
AssigneeThe Singer Company
InventorClyde M. Whitby
Life of this patent
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Abstract
Technique for generating scanned video signals for a viewed scene by scanning a beam of white light across the scene to be viewed and detecting the amounts of light reflected from the scene in each three spectral regions corresponding to the primary colors. The beam of white light comprises four monochrome components. Three components comprise beams of monochrome light corresponding to the three primary colors, while the fourth component is a monochrome beam of light having a color intermediate two of the primary colors, and intermediate adjacent color distinguishable pigment reflectance fall-off regions.
Claims9
A scanned light beam color video signal generation apparatus for use in conjunction with a scene colored by at least two different pigments, comprising:
- (a) photoelectric means for detecting incident light thereon and providing as an output three signals containing information as to the relative spectral content of the incident light in each of three primary color wavelength regions, respectively, such that said three signals comprise a color video signal;
- (b) light beam generating means for generating a beam of white light comprising four monochromatic spectral components, wherein three of said components comprise primary color components in the red, green and blue spectral regions, respectively, and said fourth component comprises a monochromatic component intermediate in wavelength of two of said primary color components such that said fourth component lies in wavelength approximately between adjacent color distinguishable pigment reflectance fall-off regions;
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- (c) scanning means for scanning said beam of white light onto said scene, whereby the portion of said beam of white light which is reflected off of said scene is said incident light which said photoelectric means detects.
A method for generating a scanned color image signal for a scene colored by at least two different pigments comprising the steps of:
- (a) generating three beams of substantially monochromatic light, one each of the three primary colors;
- (b) generating a fourth beam of monochromatic light intermediate in wavelength of two of said three primary colors, and, in wavelength, approximately between adjacent color distinguishable pigment reflectance fall-off regions;
- (c) combining said four beams to form a single beam of white light;
- (d) scanning said beam of white light across a desired portion of the scene according to a predetermined pattern;
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- (e) detecting the amounts of light reflected off the scene within three wavelength regions encompassing one each of three primary colors, and generating three signals corresponding to said amounts of light.
Dependencies are inferred from the claim text.