Harald Haas: Forget Wi-Fi. Meet the new Li-Fi Internet
Harald Haas: Áttörés a vezeték nélküli internetben
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
a nyilvánosság előtt,
acting as a receiver.
egy laptop segítségével.
it's just light.
extension of the Internet
az internet használatát,
nehézségét,
"The Internet of Things" --
"Dolgok internetjét",
connected to the Internet.
internetre csatlakozását.
of the Internet can only work
csak akkor működőképes,
leginkább használnunk.
infrastructure as much as possible.
and the LED come in.
to transmit data incredibly fast,
gyorsan továbbítja az adatokat,
of the brightness.
kódoljuk őket.
we have many LEDs around us,
mindenhol LED-eket látunk,
of Li-Fi transmitters around us.
adókészülékek gazdag infrastruktúrája.
special devices -- small photo detectors,
azaz speciális készülékeket használtunk
encoded in the data.
existing infrastructure
hogy a meglévő infrastruktúrával
a Li-Fi fénysugarakból.
solar cells and solar panels.
a napelemeket és -paneleket.
and converts it into electrical energy.
villamos energiává alakítja.
to charge our mobile phone.
of the brightness of the LED,
finom változásába kódoltuk,
from the solar cell.
kinyert energiával is.
a principal mechanism in place
and by the solar cell,
a fénysugárból a napelem útján,
of the energy harvested
changes of the brightness,
és finom váltakozásait,
by our LED lights?
megabytes per second
sebességig tudjuk fogni a jeleket
broadband connections these days.
széles sávú összeköttetés.
ezt a gyakorlatban.
off-the-shelf LED lamp.
készen kapható LED-lámpa van.
off-the-shelf solar cell;
készen kapható napelem.
we harvest from the solar cell.
kinyert energia mennyiségét.
something at the moment.
harvests light from the ambient light.
is switch on the light,
the instrument jumps to the right.
from this artificial light source.
energiához jutott.
the streaming of the video.
by pressing this button.
is streaming a video
in a very subtle way,
a LED fényerősségét,
recognize with your eye,
are too fast to recognize.
the energy harvesting drops
the video will restart.
a videoadás ismét megindul.
and energy harvesting stops as well.
és az energiabefogás is leáll.
acts as a receiver.
vevőkészülékként működik.
is a street light, and there's fog.
utcai világítás, és köd van.
a handkerchief with me.
over the solar cell.
the handkerchief to the solar cell,
and stream that information,
és sugározni az információt.
a solar cell has become a receiver
hogy a napelemből vevőkészülék lett,
encoded in light,
jeleket vesz, vezeték nélkül,
as an energy-harvesting device.
funkcióját: energiabefogó készülék.
on the roof of a hut
or indeed, lamp post.
vagy lámpaoszlopról veszi a jeleket.
where the beam hits the solar cell.
mely részére jut a fénysugár.
integrated into windows,
átlátszó napelemekre,
into street furniture,
into these billions of devices
berendezésbe szerelt napelemekre:
these devices regularly,
tölteni e készülékeket,
every few months.
cserélgetni az akkukat.
I've shown this in public.
bemutatót tartok.
that we can take this to market
meggyőződésem, hogy 2-3 éven belül
to closing the digital divide,
a digitális hozzáférés bővítéséhez,
of devices to the Internet.
internetre csatlakoztatásához is.
hatalmas robbanását okoznánk,
of energy consumption --
az ellenkezője a jellemző.
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