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SWITCHING A COMPUTING DEVICE FROM A LOW-POWER STATE TO A HIGH-POWER STATE

  • US 20150205342A1
  • Filed: 04/23/2012
  • Published: 07/23/2015
  • Est. Priority Date: 04/23/2012
  • Status: Active Grant
First Claim
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1. A method, implemented on a power management processing unit of a computing device, for switching the computing device from a low-power state to a high-power state, the method comprising:

  • receiving, at the power management processing unit distinct from a central processing unit, while a central processing unit of the computing device is in the low-power state, a first audio signal;

    verifying, using audio key detection logic residing within the power management processing unit, the first audio signal based on an audio signal key, the audio key corresponding to at least one tone played by a device;

    providing, in response to verifying the first audio signal, instructions for switching the central processing unit of the computing device from the low-power state to the high-power state.

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