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German high school transmits lessons via the lights
admin
26/09/2018
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The idea of using LED ceiling lights to transmit Wi-Fi-like Internet signals continues to move slowly forward, as a German high school is deploying a prototype Li-Fi system in a specially equipped classroom to deliver lessons to students' laptops.Interested in articles & announcements on networked lighting and Li-Fi?The school in Stuttgart, called Hegel-Gymnasium, is using the room to teach a broad range of subjects — everything from history to information technology. Five ceiling lights send wireless signals to small tabletop boxes, which then transmit to laptops via Ethernet cable. Each light covers 2m2, and each box can support up to four laptops or other devices.The prototype lights and boxes come from Berlin's Fraunhofer Heinrich Hertz Institute HHI.Li-Fi, short for light-fidelity, is a two-way form of visible light communication (VLC), an emerging technology that uses invisible modulations in LED light frequencies to embed data. Proponents say that it will open up a vast amount o...