RGBI digital video control system having intensity level control

Details RGBI digital video control system having intensity level control RGBI digital video control system having intensity level control

1984-11-06

1986-12-02

Shepperd, John W.

Communications: electrical

Land vehicle alarms or indicators

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

358 27, G09G 128

Patent

active

046268359

ABSTRACT:
An RGBI digital video control system for a color video monitor has first means for varying the level of received digital color video information, typically sixteen-color, four bit information, and second means for providing graduated RGB analog output signals in response to the varied input signals. An overall image strength control circuit varies the maximum intensity of the RGB output signals for a standard video processor. A second intensity control circuit, typically responsively coupled to the overall image strength control circuit, independently varies the intensity or brightness components for the RGB drive signals. Logic circuitry means produce non-standard colored shades to be interposed between the input signals and the graduation circuit. The logic circuit may be modified to produce desired non-standard shades in response to pre-selected input conditions.

REFERENCES:
patent: 3710011 (1973-01-01), Altemus et al.
patent: 4178608 (1979-12-01), Shirato
patent: 4271409 (1981-06-01), Filliman
patent: 4361850 (1982-11-01), Nishimura
patent: 4386345 (1983-05-01), Narveson et al.

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