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Imaging structure including a pixel with multiple signal readout circuits and methods of operation for imaging structure

  • US 7,332,703 B2
  • Filed: 03/22/2004
  • Issued: 02/19/2008
  • Est. Priority Date: 03/22/2004
  • Status: Active Grant
First Claim
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1. A pixel circuit comprising:

  • a photosensor for generating and accumulating charge during an integration period in response to incident light;

    a first readout circuit operative at the end of said integration period for receiving charges accumulated by said photosensor during said integration period and for producing an output signal based on said accumulated charge; and

    a second readout circuit operative at a time during said integration period to produce a readout signal representing charge accumulated by said photosensor up to said time.

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