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Acoustic pulse coding for imaging of input surfaces

  • US 10,198,610 B1
  • Filed: 09/23/2016
  • Issued: 02/05/2019
  • Est. Priority Date: 09/29/2015
  • Status: Active Grant
First Claim
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1. An electronic device comprising:

  • an outer cover defining a user input surface for receiving a touch input from a user;

    an array of acoustic transducers in communication with the user input surface positioned relative to a periphery of the user input surface;

    a controller in communication with each acoustic transducer of the array of acoustic transducers and configured to;

    apply a coded impulse signal to at least one acoustic transducer of the array of acoustic transducers, in response to the touch input, to cause the at least one acoustic transducer to propagate a coded acoustic output into the outer cover and toward the user input surface; and

    receive reflection information obtained using the at least one acoustic transducer, the reflection information corresponding to one or more acoustic reflections associated with the touch input; and

    an image resolver in communication with the controller and configured to receive the reflection information and, in response, generate an image corresponding to the touch input.

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