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Single chip camera device having double sampling operation

DC
  • US 6,456,326 B2
  • Filed: 01/02/2001
  • Issued: 09/24/2002
  • Est. Priority Date: 01/28/1994
  • Status: Expired due to Fees
First Claim
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1. A single chip camera device, comprising:

  • a substrate, having integrated thereon an image acquisition portion and a control portion, both of which are formed using a logic family that is compatible with CMOS;

    said image acquisition portion integrated in said substrate including an array of photoreceptors;

    said control portion integrated in said substrate including a signal controlling device, controlling said photoreceptors to output their signals, said control portion also including, integrated in said substrate, a timing circuit integrated within the same substrate that houses the array of photoreceptors, controlling a timing of operation of said array of photoreceptors to read at least one element of the array by first reading a reset level of said at least one element, and subsequently, after an integration time, second reading a charged level of said at least one photoreceptor, said reading and said second reading producing output signals based on both said charged level and said reset level.

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