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Extended dynamic imaging system and method

  • US 6,101,294 A
  • Filed: 06/02/1997
  • Issued: 08/08/2000
  • Est. Priority Date: 06/02/1997
  • Status: Expired due to Term
First Claim
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1. An imaging system, comprising:

  • (a) an imager having an array of photodetectors, each of which accumulates charge during an integration period as a result of light detected during said integration period, wherein;

    the array has a charge capacity which determines the maximum charge each photodetector of the array can accumulate;

    the charge capacity is controlled by a charge capacity control voltage applied to the array; and

    the imager increases the charge capacity control voltage during the integration period in a predetermined maimer in accordance with a function and function information to cause a corresponding increase in the charge capacity during the integration period; and

    (b) a charge capacity controller coupled to said imager which provides the function information to the imager wherein the function information is based upon the brightness distribution detected by said imager during at least one previous integration period.

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