Harald Haas: Forget Wi-Fi. Meet the new Li-Fi Internet
Harald Haas: Zapomnij o Wi-Fi. Poznaj Li-Fi
Harald Haas is the pioneer behind a new technology that can communicate as well as illuminate. Full bio
Double-click the English transcript below to play the video.
for the first time in public
zademonstrować publicznie,
acting as a receiver.
z laptopem jako odbiornikiem.
it's just light.
extension of the Internet
rozszerzenia Internetu,
"The Internet of Things" --
connected to the Internet.
podłączonych do Internetu.
of the Internet can only work
Internetu uda się tylko wtedy,
infrastructure as much as possible.
wykorzystać aktualną infrastrukturę.
and the LED come in.
to transmit data incredibly fast,
i bezpiecznego przesyłu danych.
of the brightness.
we have many LEDs around us,
mamy w otoczeniu dużo lamp LED.
of Li-Fi transmitters around us.
przekaźników Li-Fi.
special devices -- small photo detectors,
urządzeń - małych fotodetektorów,
encoded in the data.
zakodowane w danych.
existing infrastructure
istniejącej infrastruktury
solar cells and solar panels.
ogniwami i bateriami słonecznymi.
and converts it into electrical energy.
i przekształca je w energię elektryczną,
to charge our mobile phone.
do naładowania komórki.
of the brightness of the LED,
zmianach jasności lampy LED.
from the solar cell.
zbieraną z ogniwa słonecznego.
a principal mechanism in place
and by the solar cell,
i przez ogniwo słoneczne,
of the energy harvested
changes of the brightness,
i nieznaczne zmiany w jasności,
by our LED lights?
megabytes per second
do 50 megabajtów na sekundę
broadband connections these days.
obecnych łączy szerokopasmowych.
off-the-shelf LED lamp.
off-the-shelf solar cell;
we harvest from the solar cell.
z ogniwa słonecznego.
something at the moment.
harvests light from the ambient light.
światło z otaczającego oświetlenia.
is switch on the light,
the instrument jumps to the right.
przeskakuje w prawo.
from this artificial light source.
ze sztucznego źródła światła.
że wskazówka opada.
the streaming of the video.
by pressing this button.
is streaming a video
in a very subtle way,
zmiany w jasności LED,
recognize with your eye,
are too fast to recognize.
the energy harvesting drops
the video will restart.
film znów się zacznie.
and energy harvesting stops as well.
i pobór energii też się zatrzymuje.
acts as a receiver.
działa jak odbiornik.
is a street light, and there's fog.
jest ulicznym światłem i jest mgła.
a handkerchief with me.
over the solar cell.
zgodnie z oczekiwaniem,
the handkerchief to the solar cell,
przez chustkę wystarczająca ilość światła,
and stream that information,
i przekazać tę informację,
film o wysokiej rozdzielczości.
a solar cell has become a receiver
stało się odbiornikiem
encoded in light,
zakodowanych w świetle,
as an energy-harvesting device.
urządzenia do zbierania energii.
ogniwa słoneczne na dachu domu
on the roof of a hut
or indeed, lamp post.
albo słupa latarni ulicznej.
where the beam hits the solar cell.
gdzie promień uderza ogniwo.
integrated into windows,
wbudowanych w szyby okienne,
into street furniture,
instalowanych przy ulicach,
into these billions of devices
these devices regularly,
every few months.
baterii co kilka miesięcy.
I've shown this in public.
that we can take this to market
że wprowadzimy to na rynek
to closing the digital divide,
przyczynić się do zamknięcia
of devices to the Internet.
urządzeń do Internetu.
of energy consumption --
dzięki ogniwom słonecznym.
quite the opposite.
ABOUT THE SPEAKER
Harald Haas - Communications technology innovatorHarald Haas is the pioneer behind a new technology that can communicate as well as illuminate.
Why you should listen
Imagine using your car headlights to transmit data ... or surfing the web safely on a plane, tethered only by a line of sight. Harald Haas is working on it. He currently holds the Chair of Mobile Communications at the University of Edinburgh, and is co-founder and Chief Scientific Officer of pureLiFi Ltd as well as the Director of the LiFi Research and Development Center at the University of Edinburgh. His main research interests are in optical wireless communications, hybrid optical wireless and RF communications, spatial modulation, and interference coordination in wireless networks.
Haas has long been studying ways to communicate electronic data signals, designing modulation techniques that pack more data onto existing networks. But his latest work leaps beyond wires and radio waves to transmit data via an LED bulb that glows and darkens faster than the human eye can see. His group published the first proof-of-concept results demonstrating that it is possible to to turn commercially available light emitting diode (LED) light bulbs into broadband wireless transmission systems.
"It should be so cheap that it's everywhere," he says. "Using the visible light spectrum, which comes for free, you can piggy-back existing wireless services on the back of lighting equipment."
Harald Haas | Speaker | TED.com