Fine-motion virtual-reality or augmented-reality control using radar

  • US 10,540,001 B1
  • Filed: 10/06/2016
  • Issued: 01/21/2020
  • Est. Priority Date: 10/06/2015
  • Status: Active Grant
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First Claim
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1. A computer-implemented method for fine-motion virtual-reality or augmented-reality (VR/AR) control, the computer-implemented method comprising:

  • presenting a VR/AR controller within a virtual world or an augmented-reality viewport;

    tracking user actions interacting with the VR/AR controller, the tracked interactions including fine-motions in a millimeter or sub-millimeter range, the tracking comprising;

    receiving a radar signal representing a superposition of reflections of two or more points within a radar field provided by a radar-system;

    calculating a radial distance for each of the points using a time delay between a transmittal of the radar field and the receiving of the radar signal;

    calculating a radial velocity for each of the points using an observed Doppler frequency for each of the points;

    ascertaining a reflected energy for each of the points; and

    determining a relative displacement, or a relative velocity, between the points based on the radial distance, radial velocity, and reflected energy for each of the points;

    altering an orientation of the VR/AR controller in real time and with fine-motion appearance changes, the fine-motion appearance changes in the millimeter or sub-millimeter range and corresponding to the tracked user actions; and

    responsive to the altered orientation of the VR/AR controller corresponding to a control orientation, passing a control input corresponding to the control orientation effective to control the virtual world, the augmented-reality world, or an application or device external to the virtual world or the augmented-reality world.

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