Color image display device

Details Color image display device Color image display device

1993-07-08

1996-11-12

Groody, James J.

Television

Video display

Color sequential

348743, 348744, H04N 931, H04N 912

Patent

active

055745164

ABSTRACT:
A color image display system includes a monochromatic CRT or similar image display device which includes a screen for display of images and a rotary filter having filter sections of a plurality of colors. The system further includes memories for storing color image signals corresponding to each of the colors. A control circuit reads the color image signals from the memories at a higher rate than the color image signals are written into the memories to reduce image flickering. The reading operation, however, passes over the writing operation. Discontinuities caused by this passing over are reduced by reading a color image signal corresponding to a less prominent color during the passing over. Discontinuities are avoided by providing an additional memory in the system and alternately reading and writing between one of the first set of memories and the additional memory. The system also adds to each color image signal read from a memory the extracted high frequency components from the other color image signals to enhance picture definition.

REFERENCES:
patent: 4305092 (1981-12-01), Katzfey
patent: 4907862 (1990-03-01), Suntola
patent: 5172221 (1992-12-01), Ko
Television, by Kerkhof, et al., An Introduction to the Physical and . . . , Philips Technical Library, pp. 376-383, 1952.
Television Technology, by Yuzawa et al., "What is a color adapter?", May, 1964.
IBM Technical Disclosure Bulletin, by Brinson, et al., Liquid Crystal Appartus for . . . pp. 1769-1771, vol. 22, No. 5, Oct., 1979.

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