Harald Haas: Forget Wi-Fi. Meet the new Li-Fi Internet
هيرالد هاس: تطوير نوع جديد من الانترنت اللاسلكي
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
acting as a receiver.
يعمل كجهاز الاستقبال.
it's just light.
extension of the Internet
"The Internet of Things" --
" إنترنت الأشياء " -
connected to the Internet.
متصلة بالإنترنت.
of the Internet can only work
للانترنت يمكن فقط ان تعمل
infrastructure as much as possible.
الموجوده قدر الامكان
and the LED come in.
to transmit data incredibly fast,
مصابيح ليد لنقل البيانات بسرعة رهيبة
of the brightness.
we have many LEDs around us,
العديد من لمبات الليد
of Li-Fi transmitters around us.
special devices -- small photo detectors,
اجهزة خاصة -- كاشفات صور صغيرة
encoded in the data.
من خلال البيانات
existing infrastructure
اجل استخدام البنية التحتية الحالية
solar cells and solar panels.
الخلايا والوحدات الشمسية
and converts it into electrical energy.
وتحوله الى طاقة كهربية
to charge our mobile phone.
لشحن تليفوننا المحمول
of the brightness of the LED,
متغيرة من ضوء الليد
from the solar cell.
المستخلصة من الخلية الشمسية
a principal mechanism in place
and by the solar cell,
ومن خلال الخلية الشمسية
of the energy harvested
changes of the brightness,
عالية من خلال الضوء الساطع
by our LED lights?
megabytes per second
50 ميجابايت /الثانية
broadband connections these days.
النطاق العريض هذه الايام
off-the-shelf LED lamp.
off-the-shelf solar cell;
we harvest from the solar cell.
عليها من الخلية الشمسية
something at the moment.
harvests light from the ambient light.
من الضوء المحيط بنا
is switch on the light,
the instrument jumps to the right.
from this artificial light source.
the streaming of the video.
by pressing this button.
is streaming a video
in a very subtle way,
بطريقة تقنية للغاية
recognize with your eye,
are too fast to recognize.
the energy harvesting drops
الطاقة المستخلصة
the video will restart.
سوف يبدا الفيديو مرة اخرى
and energy harvesting stops as well.
والطاقة المستخلصة تتوقف ايضا
acts as a receiver.
تعمل كجهاز استقبال
is a street light, and there's fog.
هو مصباح بالشارع وهناك ضباب
a handkerchief with me.
over the solar cell.
على الخلية الشمسية
the handkerchief to the solar cell,
المنديل الى الخلية الشمسية
and stream that information,
ان تشفر وتبث المعلومات
a solar cell has become a receiver
الشمسية تعمل كجهاز استقبال
encoded in light,
ومشفرة من خلال الضوء
as an energy-harvesting device.
كجهاز استخلاص الطاقة
on the roof of a hut
or indeed, lamp post.
او بالاحرى عمود اضاءة
where the beam hits the solar cell.
الواصل للخلية
integrated into windows,
into street furniture,
into these billions of devices
في مليارات الادوات
these devices regularly,
every few months.
I've shown this in public.
that we can take this to market
ذلك للسوق الاستهلاكي
to closing the digital divide,
سد الفجوة الرقمية
of devices to the Internet.
of energy consumption --
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