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Real time position sensing of objects

  • US 9,753,126 B2
  • Filed: 12/19/2016
  • Issued: 09/05/2017
  • Est. Priority Date: 12/18/2015
  • Status: Active Grant
First Claim
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1. A method for measuring a three dimensional range to a target, comprising:

  • emitting, by a transmitter, light toward the target;

    receiving, by an aperture, one or more reflections of the light from the target;

    directing, by the aperture, the one or more reflections toward a sensor that comprises a plurality of pixels arranged in one or more rows having a plurality of columns, wherein the sensor is positioned at a location that is offset by a predetermined distance from another location of the transmitter;

    determining, by the one or more processor devices, one or more departure times of the emitted light towards the target;

    determining, by the one or more processor devices, one or more anticipated arrival times of the one or more light reflections on the sensor based on the one or more departure times and the predetermined offset distance;

    sequentially activating, by the one or more processor devices, one or more portions of the plurality of pixels arranged in the one or more rows based on the one or more anticipated arrival times; and

    employing a disparity for a first portion of the one or more rows of pixels that exceeds a disparity threshold to determine, by the one or more processor devices, that the range to the target is a particular distance based on the disparity for the first portion of the one or more rows of pixels, wherein the target'"'"'s three dimensional range measurement is based on the one or more light reflections detected by the one or more portions of the plurality of pixels.

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