Color balance compensation for digital display system with color

Details Color balance compensation for digital display system with color Color balance compensation for digital display system with color

1995-05-08

1997-10-21

Hsia, Sherrie

Television

Image signal processing circuitry specific to television

Color balance or temperature

348743, 348760, 348771, H04N 973, H04N 912

Patent

active

056801807

ABSTRACT:
A method of detecting and compensating for colors displayed by a display system (10) that uses a light source (16) and a color wheel (15). A desired color balance is specified in terms of a power ratio of three primary colors. This ratio is then compared to the actual power of light filtered through each color of the color wheel. (FIGS. 2A, 2B). In a first embodiment, the filter transmission characteristics are adjusted. (FIG. 3). In a second embodiment, the size of the color wheel's segments are changed as well as the display times for data corresponding to each segment. (FIG. 4). The two embodiments can also be combined to achieve a desired color balance.

REFERENCES:
patent: 5079544 (1992-01-01), DeMond et al.
patent: 5233385 (1993-08-01), Sampsell
patent: 5442411 (1995-08-01), Urbanus
patent: 5448314 (1995-09-01), Heimbuch
patent: 5452024 (1995-09-01), Sampsell
patent: 5526051 (1996-06-01), Gove

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