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In-air ultrasound pen gestures

  • US 9,720,521 B2
  • Filed: 02/19/2015
  • Issued: 08/01/2017
  • Est. Priority Date: 02/21/2014
  • Status: Active Grant
First Claim
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1. A method of detecting gesture commands using an ultrasonic pen and a user device, comprising:

  • acquiring a plurality of positions of the ultrasonic pen along one or more of an x-axis, a y-axis, and a z-axis of the user device;

    recognizing a micro-twisting gesture of an entirety of the ultrasonic pen about a longitudinal axis of the ultrasonic pen, the micro-twisting gesture including a sequence of movements, the recognizing of the sequence of movements including;

    recognizing a first movement around the longitudinal axis; and

    recognizing a second movement, subsequent to the first movement, around the longitudinal axis in a direction opposite the first movement; and

    performing a command based on the recognized sequence of movements included in the micro-twisting gesture.

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