Video display

A - Human Necessities – 63 – J

Patent

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350/3, 375/33

A63J 17/00 (2006.01)

Patent

CA 1286808

ABSTRACT OF THE DISCLOSURE 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 sig- nals, and both audio input signals are subsequently processed by low pass fil- ters 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. Auto- matic color balance means utilizing negative feedback is employed to control theamplitude of the separate frequency-discriminated audio signals. In a preferred embodiment, the display unit employs a color cathode ray tube and may com- prise equipment of the type normally found in video games or in a color televi- sion receiver altered to accept X-Y position and color information.

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