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Hotword detection on multiple devices

  • US 9,990,922 B2
  • Filed: 06/23/2016
  • Issued: 06/05/2018
  • Est. Priority Date: 10/09/2014
  • Status: Active Grant
First Claim
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1. A computer-implemented method comprising:

  • receiving, by a mobile computing device that is (i) configured to process voice commands that are preceded by a predefined hotword, and (ii) is in proximity to another mobile computing device that is also configured to process voice commands that are preceded by the same, predefined hotword, an audio input representing an utterance by the speaker of a voice command that is preceded by the predefined hotword;

    while receiving the audio input representing the utterance by the speaker of the voice command that is preceded by the predefined hotword, performing, by the mobile computing device, an operation;

    after receiving the audio input representing the utterance by the speaker of the voice command that is preceded by the predefined hotword, receiving an ultrasonic signal from the other mobile computing device;

    in response to receiving the ultrasonic signal from the other mobile computing device, (i) placing the mobile device into a sleep mode, (ii) bypassing, by the mobile computing device, further processing of the voice command, (iii) bypassing, by the mobile computing device, emitting an ultrasonic signal, and (iv) bypassing, by the mobile computing device, outputting a visual indication that the mobile computing device is processing the voice command; and

    while receiving the ultrasonic signal from the other mobile computing device and bypassing processing of the voice command, continuing, by the mobile computing device, to perform the operation without interruption.

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