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Brightness correction apparatus and method for plasma display

  • US 20030231148A1
  • Filed: 07/24/2002
  • Published: 12/18/2003
  • Est. Priority Date: 06/14/2002
  • Status: Active Grant
First Claim
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1. A brightness correction apparatus of a plasma display, of which a brightness error of ideal display brightness and actual display brightness for each gray scale has been established, the apparatus comprising:

  • an inverse y conversion lookup unit, to receive an input signal of a currently displaying pixel, and to convert the input signal into a first gray scale data to be output according to an inverse y conversion rule;

    an error diffusion unit, coupled to the inverse y conversion lookup unit to receive the first gray scale data, and to modify the first gray scale data into a second gray scale data recorded as a display brightness error of the currently displaying pixel by considering a display brightness error of a neighboring pixel of the currently displaying pixel; and

    a gray scale lookup unit, coupled to the error diffusion unit to receive an integral portion of the second gray scale data, and to look up a gray scale allocation table to obtain a sustain pulse number of the currently displaying pixel.

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