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Waking a device in response to user gestures

  • US 9,933,833 B2
  • Filed: 07/10/2015
  • Issued: 04/03/2018
  • Est. Priority Date: 07/18/2014
  • Status: Active Grant
First Claim
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1. A method executed in a wearable device, the method comprising:

  • establishing a null state wherein an applications processor of the device is in a sleep state and a user interface component of the device is in an inactive state;

    executing, in a coprocessor of the device, a plurality of gesture detection algorithms including one or more raise-gesture detection algorithms to detect a completed raise gesture and a preheat detection algorithm to detect an initiation of the raise gesture;

    wherein executing the raise-gesture detection algorithm includes;

    selecting criteria for identifying a raise gesture based on a starting pose determined from a set of motion sensor data samples; and

    detecting the completed raise gesture based at least in part on whether the selected criteria are satisfied;

    generating, by the preheat detection algorithm, a preheat event in the event that the initiation of the raise gesture is detected;

    generating, by at least one of the raise-gesture detection algorithms, a raise-gesture event in the event that the completed raise gesture is detected;

    transitioning the applications processor from the sleep state to a wake state in response to the preheat event; and

    transitioning the user interface component from the inactive state to an active state in response to the raise-gesture event.

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