Harald Haas: Forget Wi-Fi. Meet the new Li-Fi Internet
हाराल्ड हास: वायरलेस इंटरनेट की एक क्रांतिकारक खोज
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
यह प्रयोग दिखा रहा हू |
acting as a receiver.
और ग्राहक का काम करता है|
it's just light.
सिर्फ प्रकाश का
मै क्या कहने जा रहा हू |
extension of the Internet
अपने पैर फैलायेगा |
"The Internet of Things" --
connected to the Internet.
of the Internet can only work
अच्छे से तभी हो सकता है|
infrastructure as much as possible.
उसका ज्यादा से ज्यादा इस्तेमाल हो I
and the LED come in.
LED याने लाईट एमिटीन्ग डायोड का|
याने लाईट फायडेलिटी.
to transmit data incredibly fast,
पारेषित होता है I
of the brightness.
बदलाव करके I
we have many LEDs around us,
बहुत से LED दिखाई देते है |
of Li-Fi transmitters around us.
संरचना है लाय फाय पारेषण के लिये |
special devices -- small photo detectors,
का इस्तेमाल कर रहे है|
encoded in the data.
रूपांतरित डाटा |
existing infrastructure
इस्तेमाल करू |
solar cells and solar panels.
का इस्तेमाल करता हू|
and converts it into electrical energy.
उसे विद्युत उर्जा में बदल देता है |
to charge our mobile phone.
हेतू सौर सेल प्रयोग में लाते है |
of the brightness of the LED,
प्रकाश की कम ज्यादा धवलता के रूप मे|
from the solar cell.
निर्माण करेगा |
a principal mechanism in place
and by the solar cell,
सौर सेल द्वारा प्राप्त .
of the energy harvested
changes of the brightness,
बदलाव को ग्रहण कर सकते है |
by our LED lights?
हा कर सकते हैI
megabytes per second
ग्रहण कर सकते है I
broadband connections these days.
ब्राडबांड को पिछाड देगा I
off-the-shelf LED lamp.
off-the-shelf solar cell;
we harvest from the solar cell.
something at the moment.
harvests light from the ambient light.
इस पर रोशनी पड रही है |
is switch on the light,
the instrument jumps to the right.
from this artificial light source.
कृत्रिम प्रकाश से
यह कार्य करना बंद कर देगाI
the streaming of the video.
संप्रेषित वीडियो का पारेषण .
by pressing this button.
is streaming a video
पारेषण करता है|
in a very subtle way,
यह पारेषण हो रहा है |
recognize with your eye,
are too fast to recognize.
the energy harvesting drops
the video will restart.
वीडियो चलने लगेगा |
and energy harvesting stops as well.
वैसे ही उर्जा का निर्माण बंद होता है |
acts as a receiver.
रिसिव्हर की तरह काम करता है |
is a street light, and there's fog.
और कोहरा है I
a handkerchief with me.
over the solar cell.
the handkerchief to the solar cell,
पर्याप्त रोशनी सौर सेल ग्रहण कर रहा है I
and stream that information,
पारेषित करता है उसे डीकोड करके I
वीडियो का किया है
a solar cell has become a receiver
रिसिव्हर बनाया जा सकता है I
encoded in light,
इंनकोडेड है I
as an energy-harvesting device.
उर्जा निर्मिती का बिना बदले .
on the roof of a hut
इस्तेमाल करके
or indeed, lamp post.
ऊँचे स्थित लैम्प, अथवा लैम्प पोस्ट
where the beam hits the solar cell.
integrated into windows,
into street furniture,
प्रयोग में लाये जा सकते हैI
into these billions of devices
उन्हे भी हम प्रयोग में ला सकते है I
बन सकता है
these devices regularly,
पसंद नही आता I
every few months.
I've shown this in public.
कर रहा हू I
that we can take this to market
हम इसे बाजार में जल्दी ले आयेंगे I
to closing the digital divide,
की खाई कम करने हमारा योगदान देंगेI
of devices to the Internet.
of energy consumption --
quite the opposite.
बिलकुल विपरीत
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