Dual audio signal derived color display

Television – Pseudo color

Patent

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Details

381 56, 34081546, 34081565, 345147, 345150, 362811, 84464R, H04N 900, A63J 1700, G09G 128

Patent

active

057840962

ABSTRACT:
An apparatus is disclosed for displaying two-channel audio input signals in a three-color visual pattern. In general, the visual pattern may be formed on a viewing screen by an apparently moving spot having three color components. Phase shifting means is employed to phase shift one of the two audio input signals, and both audio input signals are subsequently processed by low pass filters to produce positioning signals in X-Y coordinates for the spot which forms the visual pattern. In addition, the two audio input signals are also mixed and separately processed by a high pass filter, a band pass filter and a low pass filter to produce frequency separated signals for controlling the intensity of each of three color components of the spot forming the visual pattern. Automatic color balance means utilizing negative feedback is employed to control the amplitude of the separate frequency-discriminated audio signals. In a preferred embodiment, the display unit employs a color cathode ray tube and may comprise equipment of the type normally found in video games or in a color television receiver altered to accept X-Y position and color information. This display permits the simultaneously presentation of a plurality of colors which correspond to audio input. Circuitry is included which allows for the modification of the rate of color change.

REFERENCES:
patent: 3969972 (1976-07-01), Bryant
patent: 4001880 (1977-01-01), Delikat
patent: 4128846 (1978-12-01), Robinson, Jr.
patent: 4195310 (1980-03-01), Anello
patent: 4257062 (1981-03-01), Meredith
patent: 4768086 (1988-08-01), Paist

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