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SYSTEM AND METHOD FOR ESTIMATING THE POSITION AND ORIENTATION OF A MOBILE COMMUNICATIONS DEVICE IN A BEACON-BASED POSITIONING SYSTEM

  • US 20160195605A1
  • Filed: 03/10/2016
  • Published: 07/07/2016
  • Est. Priority Date: 08/12/2014
  • Status: Active Grant
First Claim
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1. A mobile device, comprising:

  • an image sensor;

    a compass;

    a processor coupled to the image sensor and the compass;

    a user interface element comprising a display screen;

    a memory; and

    software in the memory to be run by the processor, wherein running of the software by the processor configures the mobile device to implement functions, including functions to;

    operate the image sensor to capture one or more images including at least one signal modulated within visible light, wherein;

    the visible light is transmitted from a plurality of visible light sources located within a space;

    any one signal is modulated within visible light transmitted by a respective one visible light source; and

    each signal corresponds to a respective identity of a respective visible light source;

    process the one or more images to determine, based at least in part on the at least one signal, an estimated location of the mobile device within the space;

    operate the compass to capture a raw heading measurement;

    obtain a corrected heading estimate based at least in part on the raw heading measurement; and

    operate the user interface element to display a map of the space, the displayed map including a depiction of the estimated location of the mobile device within the space and the displayed map being rotated, based on the corrected heading estimate, to be consistent with a physical orientation of a user of the mobile device within the space.

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