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Dispersion-based technique for performing spacial dithering for a digital display system

  • US 6,081,252 A
  • Filed: 07/11/1997
  • Issued: 06/27/2000
  • Est. Priority Date: 07/11/1997
  • Status: Expired due to Term
First Claim
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1. A method of performing spacial dithering upon a stream of data values representative of an image to be displayed on a display panel for forming a stream of dithered values, wherein each dithered value includes a number of valid bits that is less than a number of bits included in each data value, the method comprising steps of:

  • a. removing a number of least significant bits from each of the stream of data values for forming a stream of truncated values, wherein the stream of truncated values includes a number of valid bits; and

    b. selectively decrementing each of the stream of truncated values according to a corresponding entry in a selected table for forming the stream of dithered values wherein the selected table is selected from a group of stored tables according to the bits removed from each truncated value.

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