Search International and National Patent Collections

1. (WO2018100406) SYSTEMS AND METHODS FOR DUPLEX VISIBLE LIGHT COMMUNICATION WITHOUT EXTERNAL POWER SOURCE BASED ON BACKSCATTERING OF MODULATED LIGHT

Pub. No.:    WO/2018/100406    International Application No.:    PCT/IB2016/001929
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Wed Nov 30 00:59:59 CET 2016
IPC: H04B 10/116
H04B 10/40
H04B 10/516
H04B 10/50
H04B 10/60
Applicants: KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATION
Inventors: JANG, Byung-Jun
Title: SYSTEMS AND METHODS FOR DUPLEX VISIBLE LIGHT COMMUNICATION WITHOUT EXTERNAL POWER SOURCE BASED ON BACKSCATTERING OF MODULATED LIGHT
Abstract:
A method for optical communication includes, at a first electronic device with a light source and an optical sensor, receiving data communication from a second electronic device that is separate and distinct from the first electronic device. The method also includes transmitting from the light source, over time, a first optical signal representing a carrier wave having one or more characteristic time parameters; and, in conjunction with transmitting from the light source, over time, the first optical signal representing the carrier wave having the one or more characteristic time parameters, receiving from the second electronic device, over time, a second optical signal that is distinct from the first optical signal. The method further includes obtaining a processed signal from the second optical signal by demodulating the second optical signal using the carrier wave having the one or more characteristic time parameters; and transmitting the processed signal for further processing.