RGBI digital video control system having intensity level control and overall image strength control
First Claim
1. A video control system for processing R, G, B and intensity (I) digital color video signals comprising:
- logic means for producing R'"'"', G'"'"' and B'"'"' digital signals in response to at least the intensity (I) digital color video signal;
first means for controllably varying the level of said R'"'"', G'"'"' and B'"'"' signals; and
second means for controllably combining each of the level controlled R'"'"', G'"'"' and B'"'"' signals with a respective one of the R, G, B digital color video signals for producing variable level analog R, G, B output signals.
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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.
17 Citations
9 Claims
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1. A video control system for processing R, G, B and intensity (I) digital color video signals comprising:
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logic means for producing R'"'"', G'"'"' and B'"'"' digital signals in response to at least the intensity (I) digital color video signal; first means for controllably varying the level of said R'"'"', G'"'"' and B'"'"' signals; and second means for controllably combining each of the level controlled R'"'"', G'"'"' and B'"'"' signals with a respective one of the R, G, B digital color video signals for producing variable level analog R, G, B output signals. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An RGBI digital video control system for a color video monitor comprising:
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variable intensity control means adapted to rereceive R'"'"',G'"'"' and B'"'"' signals to vary said R'"'"',G'"'"' and B'"'"' signals and to output said varied R'"'"',G'"'"' and B'"'"' signals; graduation means adapted to receive R,G and B signals and said varied R'"'"',G'"'"' and B signals to combine said R,G and B signals with said R'"'"',G'"'"' and B'"'"' signals to generate RGB analog output signals; and variable image strength control means coupled to said intensity control means to limit said R'"'"',G'"'"' and B'"'"' signals and coupled to said generation means to vary the level of said RGB analog output signals. - View Dependent Claims (9)
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Specification