Patent ID: 9461741
Filing Date: 2016-10-04
CPC Classification: H04B

Claim Text:
1. A signal transmission method, comprising: acquiring, by a terminal device, a signal to be sent; and sending, by the terminal device, the signal through a visible light medium, wherein after being demodulated, the signal sent through the visible light medium is carried on a power line for transmission; wherein after sending, by the terminal device, the signal through the visible light medium, the method further comprises: receiving the signal via a light receiving device, and demodulating the signal; and carrying the demodulated signal on a power line carrier for transmission via a coupling transmission device; wherein after carrying the demodulated signal on the power line carrier for transmission via the coupling transmission device, the method further comprises: sending the signal to an Internet via an access gateway; wherein sending the signal to the Internet via the access gateway comprises: sending the signal which is carried on the power line carrier to a second processor via a second analogue front end, and storing the signal in the second processor and sending the signal to the Internet via the access gateway, wherein the second processor is configured to convert the signal from an analogue signal to a digital signal, and the second analogue front end comprises a filter and an amplifier.