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Image sensor having a uniform digital power signature

  • US 9,538,106 B2
  • Filed: 05/13/2014
  • Issued: 01/03/2017
  • Est. Priority Date: 04/25/2014
  • Status: Active Grant
First Claim
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1. A method of operating an image sensor in a uniform power mode, the method comprising:

  • scanning an array of pixels using analog sensing circuitry to obtain an analog sensor output, wherein the scanning is performed over a first time interval;

    converting the analog sensor output to a digital data output using digital logic circuitry, wherein the converting occurs over a second time interval that is subsequent to the first time interval; and

    while the array of pixels are being scanned, operating the digital logic circuitry over the first time interval and substantially coinciding with the scanning of the array of pixels to produce a uniform power signature by the digital logic circuitry throughout the first time interval.

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