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Signal processing apparatus which suppresses a color signal according to luminance level

  • US 7,061,528 B1
  • Filed: 04/20/1999
  • Issued: 06/13/2006
  • Est. Priority Date: 04/24/1998
  • Status: Expired due to Fees
First Claim
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1. A signal processing apparatus which processes a signal outputted from an image pickup element having filters arranged to use plural kinds of colors, comprising:

  • interpolation circuit which generates a plurality of color signals for each pixel position of the image pickup element by interpolation based on signals of pixels adjacent to said each pixel position of the image pickup element;

    color-difference signal forming circuit for forming color-difference signals based on output of said interpolation circuit;

    suppression circuit being provided between said color interpolation circuit and said color-difference signal forming circuit, which suppresses the plurality of color signals generated by said interpolation circuit, if a level of a luminance signal is out of a predetermined range;

    wherein it is so constructed that plurality of color signals suppressed which are output from said suppression circuit is regarded as input of said color-difference signal forming circuit.

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