Color display apparatus for displaying a multi-color visual pattern derived from two audio signals
Patent 4768086 Issued on August 30, 1988. Estimated Expiration Date: 
May 19, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 19, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorApplicationNo. 07/051925 filed on 05/19/1987US Classes:381/56, MONITORING OF SOUND340/815.46, Audio responsive lamp340/815.65, Multiple colors345/690, Intensity or color driving control (e.g., gray scale)362/811, Psychedelic lighting84/464RProducing color or light effectsExaminersPrimary: Groody, James J.Assistant: Svihla, Randall S. Attorney, Agent or FirmInternational ClassA63J 17/00 (20060101)AbstractAn 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. | |
