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Frame circulating type noise reduction method and frame circulating type noise reduction device

  • US 20060192896A1
  • Filed: 01/28/2005
  • Published: 08/31/2006
  • Est. Priority Date: 01/30/2004
  • Status: Active Grant
First Claim
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1. A frame-cyclic noise reduction method employed for an image display device in which one field is divided into a plurality of sub-fields each of which has a predetermined weight of luminance, and turned-on sub-fields are properly combined to provide image with gradation, the frame-cyclic noise reduction method comprising:

  • detecting an area where an edge portion of an image becomes unclear, i.e., where sub-field fuzziness becomes worse; and

    controlling a cyclic amount for the area in which the sub-field fuzziness becomes worse so as to be different from a cyclic amount for other areas.

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