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Determination of mobile display position and orientation using micropower impulse radar

  • US 9,761,049 B2
  • Filed: 03/28/2014
  • Issued: 09/12/2017
  • Est. Priority Date: 03/28/2014
  • Status: Active Grant
First Claim
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1. A mobile device comprising:

  • a front face and an opposite rear face;

    a display on the front face to present images;

    radar components to generate a plurality of radar signal pulses and to generate distance data based on received return signals, wherein the radar components are micropower impulse radar (MIR) components;

    a plurality of rear facing radar antennae to transmit a first plurality of radar signal pulses in a first direction and to receive a first set of return signals resulting from reflection of the first plurality of radar signal pulses;

    a plurality of front facing radar antennae to transmit a second plurality of radar signal pulses in an opposite second direction and to receive a second set of return signals resulting from reflection of the second plurality of radar signal pulses, the second plurality of radar pulses being directed towards a user of the mobile device; and

    a processor to process signals and data, wherein the processor is to;

    process the first set of return signals received by the plurality of rear facing radar antennae to determine a current position and orientation of the display with respect to real objects in an environment,process the second set of return signals received by the plurality of front facing radar signals to determine and track a position of a current vantage point of a user of the mobile device, wherein the current vantage point of the user is a current position of a dominant eye of the user in relation to the mobile device, andgenerate and update an augmented image including rendering a virtual object and superimposing the virtual object on an image including one or more real objects, the rendering of the virtual image being based at least in part on the determined current position and orientation of the display and the determined current vantage point of the user of the mobile device, wherein generation of the augmented image includes the processor to generate and update a viewing matrix for the mobile device, the viewing matrix being updated to define a viewing frustum that corresponds to the current vantage point of the user of the mobile device.

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