System and method for bidirectional visible light communication without external power supply based on backscattering of modulated light

摘要

A method for optical communication includes receiving data communication from a second electronic device that is distinct from the first electronic device in a first electronic device having a light source and an optical sensor. The method also includes transmitting, over time, a first optical signal representing a carrier having one or more characteristic time parameters from the light source; And a second optical signal distinguished from the first optical signal from the second electronic device with respect to transmitting the first optical signal representing the carrier having the one or more characteristic time parameters from the light source over time. And receiving it over time. The method includes demodulating the second optical signal using the carrier having the one or more characteristic time parameters to obtain a processed signal from the second optical signal; And transmitting the processed signal for subsequent processing.