The German computer scientist Harald Haas has Li-Fi invented.
(Photo: AP)Steffen Könau
With a data transfer by light bulbs a company from Estonia will send the proven Wi-Fi technology in retirement. This would also computer scientist Harald Laas who believes in the future of Li-Fi technology.
Schlappe hundred times faster than the best wireless network. The whole without additional equipment as they need conventional wireless LANs today. And all this is then also an invention that was exceptionally not made even in the US, but in Germany: Li-Fi was a native of Franconia computer scientist Harald Haas called, which could one day the successor to the popular and widely used Wi-Fi technology will be
Information transmission via room lamps
Haas’ plan is as original as it is convincing. 14 billion light bulbs has counted the world’s Professor of Edinburgh University. If it were possible to replace by LED lights and this also still be equipped with a chip that can process signals, then could be sent over ordinary room lights Information. Not otherwise does a wireless router, just with radio waves.
Intelligent wireless lamp
They call themselves “Smart Bulb”, so clever lamp, but have another target as the messaging. When Money Collectibles Portal Indiegogo about Qube supporters has raised for a smart bulb that can be controlled via wireless LAN home network. After one or more bulbs are integrated into the network, they communicate with each other, instructions are displayed via color changes. About Bluetooth recognizes the bulb where the resident is just, and depending on then there turned the light, there are schedules processed or accessed mood-dependent color changes. About iPhone or Android phone to be a control of room lighting from anywhere in the world from possible to launch later this year. A Qube will cost around 17 euros.
Li-Fi, or “Visible Light Communication” (VLC), so communication with visible light, would, however, faster by a multiple. Up to 100 times faster than normal WiFi transmission is by light – under laboratory conditions even ten gigabits per second were attained. Download an HD movie, so only takes a minute instead of half an hour. Here, the frequency of switching on and off of the LED lamp which emits the signals, so fast that the human eye noticed nothing of it
. Hope from Estonia
The only problem of this new technology is the practical application. Li-Fi is opposite of Wi-Fi also has some disadvantages, such as the, having to rely on visual connections and the need for a completely new infrastructure. A piece moved closer is Haas’ dream of realizing the light-revolution but now. Through the work of a company from Estonia who is originally from India Deepak Solanki and Saurabh Garg have built with their company Velmenni first time a smart LED lamp which is able to send information. “Jugnu” call Solanki and Garg only slightly futuristic looking bulb that quasi transported piggyback on the light signals. Deepak Solanki it demonstrated in a video: For a Jugnu lamp comes music, transported by normal light. Once Solanki holding his hand between the light source and the receiver, stops transmitting
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Cost reduction is a clear advantage
A disadvantage of new technology, which would be, according to Harald Haas but made up for by its enormous cost advantages. Light is everywhere, it would only be modulated. Then the living room lights could act as streetlights as hotspots, a desk lamp replaces the LAN connector and lights could communicate with cars. On the other hand data would be more secure because they can not leave the building. Haas sees “a huge potential” for Li-Fi. And Velmenni currently building already a first Li-Fi project for a company that wants to connect their offices in this way to the Internet. (mz)
For demonstration video: www.bit.ly/lichtwelle
