Patent ID: 9552037
Date: 2017-01-24
CPC Classifications: G06F,G10L

Claim:
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 the central processing unit of the computing device is in the low-power state, a first audio signal; verifying, by the power management processing unit using audio key detection logic hard-coded within the power management processing unit, that the first audio signal approximately matches one of multiple stored audio signal keys, the audio signal keys being based on voice recordings of multiple users of the computing device; authenticating one of the multiple users based on the matched audio signal key; providing, by the power management processing unit in response to verifying the first audio signal, instructions for: