Digital control of color in CRT display

Details Digital control of color in CRT display Digital control of color in CRT display

1980-09-29

1986-05-20

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340793, 358 12, G09G 116, G09G 128

Patent

active

045904634

ABSTRACT:
The color of a pixel produced on the face of a CRT is determined by the n bits of a hue/saturation digital input signal which is applied to a decoder to select one of 2.sup.n output lines of the decoder. Each output line is connected through a red, green and blue resistor triplet and through red, green and blue amplifier channels to respective red, green and blue signal inputs of the CRT. The values of the red, green and blue resistors in a selected resistor triplet determine the color of the pixel. The bits of a brightness signal are used to equally control the gain in the red, green and blue channels.

REFERENCES:
patent: 2982811 (1961-05-01), Valensi
patent: 3177350 (1965-04-01), Abbott et al.
patent: 3482238 (1969-12-01), Stine
patent: 3603962 (1971-09-01), Lechner
patent: 4121283 (1978-10-01), Walker et al.
patent: 4158200 (1979-06-01), Seitz et al.
patent: 4183046 (1980-01-01), Dalke et al.
patent: 4276543 (1981-06-01), Miller et al.

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