CMOS image sensor with shared sensing node

  • US 9,728,574 B2
  • Filed: 01/03/2014
  • Issued: 08/08/2017
  • Est. Priority Date: 01/31/2005
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • generating photocharge at a first pixel of an image sensor, the first pixel having a transfer transistor and a first sensing node for storing the photocharge connected to the transfer transistor, the image sensor also having a second pixel having a second sensing node for storing photocharge;

    electrically coupling the first sensing node and the second sensing node;

    transferring the photocharge generated at the first pixel to the first sensing node of the first pixel via the transfer transistor and to the second sensing node of the second pixel of the image sensor, wherein the first pixel is in a first line and the second pixel is in a second line adjacent to the first line; and

    generating, based on the photocharge transferred to the first sensing node and the second sensing node, an output signal that is indicative of the photocharge generated at the first pixel.

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