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Gesture detection

  • US 9,817,521 B2
  • Filed: 11/02/2013
  • Issued: 11/14/2017
  • Est. Priority Date: 11/02/2013
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • detecting, by a piezoelectric transducer, a vibration propagating in a body of an electronic device, the body of the electronic device having a front side and a back side, and the body of the electronic device having a protective case, the protective case having an inner and outer surface such that the inner surface of the protective case is aligned along the back side of the electronic device, and the piezoelectric transducer is adhered to the inner surface of the protective case, the vibration caused by a contactless gesture input near the protective case;

    processing, by a processor, a signal converted from an output generated by the piezoelectric transducer in response to the vibration propagating in the body of the electronic device caused by the contactless gesture input near the protective case;

    sampling the signal to produce a plurality of sampled signal data points, wherein the plurality of sampled signal data points are discrete data points for the signal produced at a sampling rate;

    querying, by the processor, a database for one or more of the plurality of sampled signal data points, the database associating the one or more of the plurality of sampled signal data points with a command;

    retrieving, by the processor, the command that is associated with the one or more of the plurality of sampled signal data points; and

    executing, by the processor, the command in response to the contactless gesture input near the protective case.

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