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HIGH-SPEED ANALOG PHOTON COUNTER AND METHOD

  • US 20120057152A1
  • Filed: 09/06/2010
  • Published: 03/08/2012
  • Est. Priority Date: 09/06/2010
  • Status: Active Grant
First Claim
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1. A method comprising:

  • delivering an electric charge to a circuit through a current source of the circuit;

    accumulating the electric charge in a capacitor of the circuit electrically coupled to the current source;

    comparing the electric charge accumulated in the capacitor of the circuit with a reference voltage through a comparator of the circuit electrically coupled to an output of the capacitor;

    resetting the capacitor of the circuit when the electric charge accumulated in the capacitor of the circuit matches the reference voltage; and

    measuring an intensity of light through the circuit.

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