Electronic device with wake on voice function and operation method thereof
AssigneeRealtek Semiconductor Corp.
InventorsTSUNG-PENG CHUANG, CHIH-CHEN KU
Life of this patent
Estimating the term…
Abstract
The present disclosure illustrates an electronic device with wake on voice function and an operating method thereof. The electronic device detects an audio signal in analog form by an additional pre-signal detector, and the pre-signal detector wakes up an analog-to-digital converter and a human voice detector when the audio signal in analog form is determined to satisfy a predetermined condition. When a host system of the electronic device enters into a sleep mode from an operation mode, the analog-to-digital converter and the human voice detector enter into a sleep mode together.
Claims20
An electronic device with a wake on voice function, comprising:
- a host system;
- a microphone, configured to receive an ambient sound, and to output the ambient sound as an ambient audio signal;
- a first microphone pre-amplifier coupled with the microphone, configured to receive and amplify the ambient audio signal to generate an analog audio signal;
- a pre-signal detector coupled with the first microphone pre-amplifier, configured to receive and determine if the analog audio signal satisfies a predetermined condition, and to output a first wake-up command when the analog audio signal is determined to satisfy the predetermined condition;
- and
- a key-phrase determination circuit coupled with the pre-signal detector and the host system, wherein after the host system enters into a sleep mode, when the pre-signal detector outputs the first wake-up command, the key-phrase determination circuit is woken up to receive and process the analog audio signal so as to determine if the ambient sound satisfies a predetermined key-phrase, and when the ambient sound is determined to satisfy the predetermined key-phrase, the key-phrase determination circuit outputs a host wake-up command to wake up the host system from the sleep mode.
An operation method for an electronic device with a wake on voice function, wherein the electronic device includes a host system, a microphone, a first microphone pre-amplifier, a pre-signal detector and a key-phrase determination circuit, the operation method comprising:
- receiving an ambient sound, by the microphone, and outputting the ambient sound as an ambient audio signal;
- receiving the ambient sound, by the first microphone pre-amplifier, to generate an analog audio signal;
- receiving the analog audio signal, by the pre-signal detector, to determine if the analog audio signal satisfies a predetermined condition, wherein when the host system enters into a sleep mode and if the analog audio signal is determined to satisfy the predetermined condition, the pre-signal detector outputs a first wake-up command to wake up the key-phrase determination circuit;
- and
- the key-phrase determination circuit being woken up to receive and process the analog audio signal so as to determine if the ambient sound satisfies a predetermined key-phrase, wherein when the ambient sound is determined to satisfy a predetermined key-phrase, the key-phrase determination circuit outputs a host wake-up command to wake up the host system from the sleep mode.
Dependencies are inferred from the claim text.