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Liquid crystal display panel system and method of using same

  • US 5,153,568 A
  • Filed: 04/24/1991
  • Issued: 10/06/1992
  • Est. Priority Date: 07/21/1988
  • Status: Expired due to Fees
First Claim
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1. A liquid crystal display panel system comprising:

  • a liquid crystal display panel unit for displaying computer-generated color images;

    said liquid crystal display panel unit including a plurality of individual monochromatic liquid crystal display elements, each individual one of said plurality of elements being distinguishable from every other individual one of said plurality of elements by its color producing characteristics;

    a video processing unit for interfacing said display panel unit to a computer processor unit and for producing a graduation in intensity of each individual one of said plurality of elements to produce a large number of color combinations said video processing unit including;

    (a) means for receiving video clock signals for controlling the displaying of information in successive frames each defined by a frame time interval consisting of a predetermined number of said video clock signals;

    (b) means for receiving intensity level signals, each one of said intensity level signals being indicative of a desired shading level for a given pixel image during the same portion of each frame time interval repetitively over a large number of successive frame time intervals;

    (c) signals means responsive to said video clock signals for generating intensity level averaging signals arranged in recurring groups of predetermined ones of said averaging signals;

    (d) said groups of intensity level averaging signals recurring during each frame time interval, each one of said groups consisting of another predetermined number of said averaging signals, said another number not being evenly divisible into said predetermined number of said video clock signals for causing different ones of said averaging signals to occur during successive frame time intervals for a given pixel element; and

    (e) means for comparing individual ones of said intensity level signals and individual ones of said intensity level averaging signals for a given pixel element to cause the individual ones of said plurality of display elements to be activated selectively, whereby the average intensity level for each given pixel image over a large number of successive frames closely approximates said desired shading level.

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