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Positional state identification of mobile devices

  • US 10,067,220 B2
  • Filed: 12/31/2014
  • Issued: 09/04/2018
  • Est. Priority Date: 12/31/2014
  • Status: Active Grant
First Claim
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1. A method for identifying a positional state of a mobile device, comprising:

  • generating an output audio pulse from a speaker of a mobile device;

    detecting an input audio pulse, corresponding to the output audio pulse, utilizing a microphone of the mobile device;

    evaluating the output audio pulse and the input audio pulse to determine a positional feature associated with the mobile device; and

    evaluating the positional feature utilizing a classifier to determine a positional state of the mobile device indicative of the mobile device lying on a surface.

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