Production of modulation signals from audio frequency sources to control color contributions to visual displays

Claim 1

Apparatus for modulating electronically controlled visual display systems comprising: (a) processing means for operating on audio frequency modulating signals to produce processed modulating signals for communication to at least one control circuit of a visual display system, whereby said control circuit controls the contribution of at least one color in a visual display of the visual display system, and for operation on said control circuit to modulate said contribution of color in said visual display; (b) gating circuit means, as part of said processing means, for operating on at least one said modulating signal to selectively permit or block said communication of said modulating signal; (c) gate control means, as part of said processing means and including voltage controlled oscillator means, for generating enabling signals for selectively enabling said gating circuit means for so permitting said modulating signal communication such that the frequency of each such enabling signal so generated is determined, at least in part, based on the value of a parameter of the corresponding modulating signal being so operated on by said gating circuit means in response to said enabling signal; and (d) detector means, as part of said processing means, for responding to a parameter of each modulating signal so operated on by said gating circuit means to produce control signals, corresponding to each such modulating signal, for communication to said gate control means to operate on said voltage controlled oscillator means to vary the frequency of each enabling signal so enabling the gating circuit means operating on the corresponding modulating signal.

Claim 19

A method of modulating electronically controlled visual display systems comprising the steps of: (a) providing gating circuitry, gate control means, including variable signal generation means, and detector means; (b) receiving one or more input audio frequency signals for use as modulating signals; (c) sampling at least one said modulating signal with said detector means to thereby generate control signals in response to a parameter of each such modulating signal so sampled; (d) controlling said gate control means by said control signals to produce enabling signals dependent, at least in part, on said control signals; (e) operating on said modulating signals, so sampled, by said gating circuitry to selectively permit or block transmission of said sampled modulating signals in response to corresponding enabling signals received by corresponding gating circuitry; and (f) communicating said modulating signals, including said modulating signals so sampled and so operated on by said gating circuitry, to at least one control circuit of a visual display system, wherein each such control circuit controls the contribution of at least one color in a visual display of the visual display systems, and thereby operating on said control circuits to modulate said contributions of color in such visual displays.

Claim 20

A method of modulating electronically controlled visual display systems comprising the steps of: (a) providing gating circuitry, gate control means, including variable signal generation means, and detector means; (b) receiving one or more input audio frequency signals for use as modulating signals; (c) sampling at least one said modulating signal with said detector means to thereby generate control signals in response to a parameter of each such modulating signal so sampled; (d) controlling said gate control means by said control signals to produce enabling signals dependent, at least in part, on said control signals; (e) operating on said modulating signals, so sampled, by said gating circuitry to selectively permit or block transmission of said sampled modulating signals in response to corresponding enabling signals received by corresponding gating circuitry; and (f) communicating said modulating signals, including said modulating signals so sampled and so operated on by said gating circuitry, to at least one control circuit of a visual display system, wherein each such control circuit controls the contribution of at least one color in a visual display of the visual display systems, and thereby operating on said control circuits to modulate said contributions of color in such visual displays.