Patent ID: 9703350
Date: 2017-07-11
CPC Classifications: G06F,G10L

Claim:
1. A wake-up system that wakes up an electronic device from a sleep mode, comprising: a first sound transducer that converts a part of a sound signal to a first electrical signal, wherein the first sound transducer is re-tasked from a conventional loudspeaker, a keyword detection logic, coupled to the first sound transducer, the keyword detection logic preliminarily identifying in a part of the first electrical signal a speech energy profile that corresponds to at least one of a plurality of keywords and generating a first wake-up control; a second sound transducer that converts a part of the sound signal to a second electrical signal and operates at a higher power level than the first transducer; and a keyword finder coupled to the wake-up system, activated from the sleep mode by the first wake-up control, identifying the at least one of the plurality of keywords with an enhanced accuracy and generating a second wake-up control to activate complete functionality of a host of the electronic device from the sleep mode.