Image sensor pixel with gain control

Image sensor pixel with gain control

  • CN 101,675,657 A
  • Filed: 04/22/2008
  • Published: 03/17/2010
  • Est. Priority Date: 05/01/2007
  • Status: Active Grant
First Claim
Patent Images

1. , a kind of method that is used to read picture signal, this method comprises:

  • At least two photosensitive regions are provided;

    At least two TG transfer gates that are associated with each photosensitive region respectively are provided;

    Provide the common electrical charge that is electrically connected to described TG transfer gate to the voltage transitions zone;

    The reset mechanism of described common electrical charge to the voltage transitions zone is provided for resetting;

    One of at least after the transfer charge, forbidding all TG transfer gates from described photosensitive region in the very first time;

    Allow at least one TG transfer gate in second time subsequently;

    AndWhen described at least one TG transfer gate kept being allowed to from described second time, subsequently the 3rd time from described photosensitive region transfer charge one of at least.

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