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Wide dynamic range pinned photodiode active pixel sensor (APS)

  • US 7,489,352 B2
  • Filed: 11/15/2002
  • Issued: 02/10/2009
  • Est. Priority Date: 11/15/2002
  • Status: Active Grant
First Claim
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1. An image apparatus, comprising:

  • a first linear pixel circuit for producing a first pixel output signal of a first pixel cell based on charge integration by a first photo-conversion device over a first integration period, anda second linear pixel circuit for producing a second pixel output signal of said first pixel cell based on charge integration by a second photo-conversion device over a second integration period, wherein the second integration period is shorter than the first integration period, and said first pixel cell is structurally configured such that said second photo-conversion device receives less light than said first photo-conversion device; and

    a sample-and-hold circuit for capturing signals representing said first and second pixel output signals.

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