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US 5,399,947 AGranted
Dynamic color separation display
OwnerClayton A. Washburninventor
Life of this patent
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Abstract
A Dynamic Color Separation (DCS) color display system employs signals which provide timing, luminance, and chrominance information of the display output. The display system includes a timing circuit which produces unique signals for correcting errors produced when hue is controlled by the phase of the (S) signal and the degree of saturation with its amplitude. The signals may be applied to know CRT beam guns, and modified guns specific to the generated signals are also disclosed.
Claims17
A single schlieren light valve color display system comprising:
- an input light source, a schlieren light valve optical assembly including a schlieren grating and a light reflective, insulating and deformable image format surface or surface film deformable by electron charge thereon, an electron image forming system including means for generating an electron beam and for forming an electron image on said surface or surface film and output optical projection means, wherein said electron image forming system comprises the electron beam control system of a one gun color display system employing color separation means for dividing the electron image on said format into a pattern of triads of primary color control stripes each acting to control transmission of a primary color corresponding to that stripe, and
- means for dividing said light source into a format pattern of triads of primary color stripes, said pattern of primary color control stripes matching said format pattern of triads of primary color stripes.
A single CRT dynamic color separation projection color display system comprising:
- means for providing an input control signal including a color signal,
- an output display screen,
- means for generating and controlling at least one electron beam,
- an output display screen associated format area for producing a color display comprising an outwardly curved surface faceplate having a format pattern of triads of primary color producing phosphors acting in response to impingement of said electron beam at pixel positions thereon, each of said pixel positions having a color control area comprising an elemental portion of a said triad with a prescribed color reference position in relation to a said triad,
- beam deflection means for deflecting said electron beam to said pixel positions over said format area in input signal prescribed sequence to produce said color display,
- position control means for precisely controlling the position of said electron beam with respect to the reference position of successive pixels of said sequence,
- dynamic color separation means comprising means for controlling said electron beam wherein said input control signal controls the intensity of said electron beam to control the luminous output of said display and wherein said color signal is used to generate a beam control signal for directing said electron beam to a position in relation to said color reference position of a said color selective area and distributing the energy of beam impingement of said electron beam about said position over said pixel color selective area in proportion to the chromaticity of said color signal, and
- an optical system for projecting an image on said output display screen of said color display, said optical system and curved faceplate being matched to provide optimum transmission efficiency and uniformity of light output on said output display screen.
5 more elements
A single CRT color projection display system comprising:
- means for generation and deflection of at least one electron beam over a format surface area of elemental pixel areas, said electron beam having an energy intensity level, each pixel area comprising a pattern of elements producing a distribution of color emission in response to the energy of electron beam impingement selectively applied across said pixel area;
- an output display screen;
- optical means projecting said color emission of said format area onto the output display screen;
- means for control of said generation and deflection means to position said electron beam at sequentially selected pixels of said format surface area and to select the energy intensity level of said electron beam at each said pixel;
- and
- means, including means for shaping said at least one electron beam, for control of the position, shape and distribution of the impingement of said beam in relation to said pattern of elements of said pixel area of each said selected pixel thereby to control a chromaticity of output of said color display.
3 more elements
Dependencies are inferred from the claim text.