| 摘要 |
An electronic device includes a receiver and an activator. The receiver includes a microphone; and a signal detector, coupled to the microphone, for determining whether a valid input signal received from the microphone is a voice signal or an ultrasonic signal by comparing a frequency of the valid input signal with at least two frequency bands, and accordingly passing the valid input signal. The activator includes a voice detection module, for performing a voice activated process; and an ultrasonic detection module, for performing an ultrasound activated process. The voice detection module and the ultrasonic detection module are enabled by the signal detector simultaneously or separately. |
| 主权项 |
1. An electronic device, comprising:
a receiver, comprising:
a microphone; anda signal detector, coupled to the microphone, for determining whether a valid input signal received from the microphone is a voice signal or an ultrasonic signal by comparing a frequency of the valid input signal with at least two frequency bands, and accordingly passing the valid input signal; and an activator, coupled to the receiver, comprising:
a voice detection module, for performing a voice activated process; andan ultrasonic detection module, for performing an ultrasound activated process,wherein the voice detection module and the ultrasonic detection module are enabled by the signal detector simultaneously or separately. |
