Harald Haas: Forget Wi-Fi. Meet the new Li-Fi Internet
Harald Haas: Otkriće nove vrste bežićnog Interneta
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
demonstrirati
acting as a receiver.
prijamnikom.
it's just light.
samo svjetlo.
koja je poanta?
extension of the Internet
Interneta
"The Internet of Things" --
"Internet Stvari" --
connected to the Internet.
na Internet.
of the Internet can only work
Interneta može raditi jedino
infrastructure as much as possible.
infrastrukturu što je više moguće.
and the LED come in.
i LED svjetla.
to transmit data incredibly fast,
za veoma brz prijenos podataka,
of the brightness.
svjetline.
we have many LEDs around us,
mnoštvo LED svjetiljki u okolini,
of Li-Fi transmitters around us.
infrastruktura LI-Fi odašiljača oko nas.
special devices -- small photo detectors,
uređaje -- male fotodetektore,
encoded in the data.
enkodiranih u podatke.
existing infrastructure
se iskoristiti postojeća infrastruktura
Li-Fi svjetla.
solar cells and solar panels.
ćelijama i solarnim panelima.
and converts it into electrical energy.
svjetlost u električnu energiju.
to charge our mobile phone.
za punjenje mobitela.
of the brightness of the LED,
promjenama svjetline LED diode,
from the solar cell.
prikupljena u solarnoj ćeliji.
a principal mechanism in place
mehanizam
and by the solar cell,
pomoću solarne ćelije,
of the energy harvested
changes of the brightness,
promjene svjetline,
by our LED lights?
odašilje?
megabytes per second
primati do 50 MB po sekundi
broadband connections these days.
većine širokopojasnih veza.
off-the-shelf LED lamp.
kupovna LED svjetiljka.
off-the-shelf solar cell;
kupovna solarna ćelija;
we harvest from the solar cell.
pomoću solarne ćelije.
something at the moment.
pokazuje nešto.
harvests light from the ambient light.
svjetlo iz okoline.
is switch on the light,
the instrument jumps to the right.
skače udesno.
from this artificial light source.
ovog umjetnog izvora svjetlosti.
solarne ćelije.
the streaming of the video.
videa.
by pressing this button.
ove tipke.
is streaming a video
video
in a very subtle way,
veoma suptilan način,
recognize with your eye,
primjetiti golim okom,
are too fast to recognize.
da bi ih primjetili.
the energy harvesting drops
energije
the video will restart.
počinje ponovno.
and energy harvesting stops as well.
prikupljanje energije prestaje, također.
acts as a receiver.
ponaša kao prijamnik.
is a street light, and there's fog.
ulično svjetlo, i magla je.
a handkerchief with me.
over the solar cell.
kao što je i očekivano,
the handkerchief to the solar cell,
kroz maramicu do solarne ćelije,
and stream that information,
prenijela tu informaciju,
a solar cell has become a receiver
da solarna ćelija postaje prijamnik
encoded in light,
enkodirane u svjetlu,
as an energy-harvesting device.
uređaja za prikupljanje energije.
on the roof of a hut
na krovu nastambe
or indeed, lamp post.
ili stub za uličnu rasvjetu.
where the beam hits the solar cell.
pogodi solarnu ćeliju.
integrated into windows,
integrirane u prozorima,
into street furniture,
u ulične elemente,
into these billions of devices
milijarde uređaja
these devices regularly,
redovno,
every few months.
svakih par mjeseci.
I've shown this in public.
ovo prikazano u javnosti.
that we can take this to market
da možemo izaći na tržište sa ovim
to closing the digital divide,
premoštavanju digitalne podjele,
of devices to the Internet.
na Internet.
of energy consumption --
potrošnje energije --
quite the opposite.
upravo suprotno.
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