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This is not a new idea. Saw a functional demo more than eight years back. Checkout: http://www.talking-lights.com/ http://www.talking-lights.com/
by alok-g 15y ago
This is not a new idea. Saw a functional demo more than eight years back. Checkout: http://www.talking-lights.com/ http://www.talking-lights.com/
- gfodor 15y agoThis seems to be different. In your link posted, the lights serve as simple positioning beacons. It seems analogous to the bandwidth we've come to expect from things like infrared remote controls. In this case, and indeed the whole point of the talk, is they're transmitting HD video.
- pyoung 15y agoThe concept of transmitting data through light has been around forever. For my undergrad physics lab class in college, my team used a laser to transmit audio. Another team did a similar thing except they hooked it up to computers and sent jpeg's. This was probably seven years ago, and this wasn't the first time that projects like this had been done for this class.
- Geee 15y agoLasers are completely different. Ever heard of fiber-optic communication? This is about using light for both illumination and communication at the same time.
- Magnin 15y agoEdison only had you beat by 100 years https://secure.wikimedia.org/wikipedia/en/wiki/Photophone https://secure.wikimedia.org/wikipedia/en/wiki/Photophone
- dpryan 15y agoAt least since Alexander Graham Bell and the optical telephone: http://en.wikipedia.org/wiki/Photophone http://en.wikipedia.org/wiki/Photophone
- isTravis 15y agoCompletely correct. This is not a new idea at all. However TalkingLights had a huge bandwidth limit because they used flourescent lighting. LEDs can go to much higher speeds - but even still, this isn't new. Researchers in Japan and Boston University have been producing demos for years: http://www.bu.edu/smartlighting/research/smart-light-prototype/ http://www.bu.edu/smartlighting/research/smart-light-prototy... http://www.naka-lab.jp/index_e.html http://www.naka-lab.jp/index_e.html