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Digital readout method and apparatus

  • US 9,385,738 B2
  • Filed: 12/08/2014
  • Issued: 07/05/2016
  • Est. Priority Date: 09/30/2005
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • an array of photodetectors; and

    a read-out integrated circuit (ROIC) operably coupled to the array of photodetectors, the ROIC comprising;

    a plurality of analog-to-digital converters (ADCs), the plurality of ADCs comprising one ADC per photodetector in the array of photodetectors, each ADC in the plurality of ADCs operably connected to a corresponding photodetector in the array of photodetectors and configured to convert a respective analog signal from the corresponding photodetector into a respective digital signal; and

    a plurality of counters, each counter in the plurality of counters operably coupled to a corresponding ADC in the plurality of ADCs and configured to store a respective digital number (DN) based on the respective digital signal.

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