VisibleLightCommunication
Latest
Philips turns LEDs into an indoor GPS for supermarkets
Philips believes that the days of endlessly roaming around a store looking for the right kind of balsamic vinegar may soon be at an end. The company's lighting division has developed an indoor navigation system that enables your smartphone to direct you straight towards the Oils & Vinegars (Specialist) section. In addition, the technology helps to light everything up nice and bright, and save a bucketload of cash in the process.
Outstanding Technology brings visible light communication to phones and tablets via dongle and LEDs
Data transmission via visible light is no longer a technological novelty, but it has yet to make its way into consumer's hands. Japanese firm Outstanding Technology is aiming to change that with its Commulight location system, which relies on a pair of receivers to get smartphones and tablets downloading info using photons instead of radio waves. One dongle is of the USB variety, but since most mobile gadgets lack such a socket, there's another that plugs into any device's 3.5mm jack. Each employs a sensor that grabs relevant location-based info from an overhead data-transmitting LED light. According to its maker, Commulight's destined for use as a way to give museum goers exhibit info, to transmit coupons, and even provide precision indoor location services more accurate than GPS or WiFi. Want to know more? Check out the video of tech in action after the break.
LVX System launches visible light communication in the US, finally
Ever wonder what happened to LEDs as a WiFi alternative? Well, wonder no more, because visible light communication is here -- in the municipal offices of St. Cloud Minnesota, at least. Starting tomorrow, LVX System, a Minnesota start-up, is installing the first of a series of LED fixtures that will use flashing lights to connect office workers to the internet, while saving big on the electric bill. The fixtures also function as regular overhead lights, using 36 watts of energy where 100 watts were once necessary. The setup consists of clusters of LEDs that switch on and off thousands of times per second at intervals undetectable to the human eye. The flashes emit binary code data -- off equals zero and on equals one -- that is received by special patented modems. Lights on these modems then transmit data back to the fixtures, and voila, you've got internet. According to LVX, light-powered networks are far less crowded and far more secure than their predecessors. Unfortunately, LVX's current incarnation transmits data at about 3Mbps -- a mere pittance compared to standard WiFi or Ethernet. Then again, 3Mbps is certainly fast enough for a city employee to perform really important tasks like keeping track of their favorite gadget blog, so we'll take it. [Thanks, Andrew]
Siemens gurus hit 500Mbps with white LED lights, dare you to blink
You know what's better than wireless power? Nothing, frankly. You know what comes darn close? Wicked fast transmissions through thin air. Researchers from Siemens have just shattered their own record for wireless data transfer using white LED light, hitting a whopping 500Mbps while working in collaboration with the Heinrich Hertz Institute in Berlin. The old record sat at "just" 200Mbps, but the new speeds are helping to take Visible Light Communication from a hopeful technology to a serious contender in the space. These same researchers were also able to show that a system using up to five LEDs is capable of beaming out data over long distances at up to 100Mbps. We're told that the IEEE has been toiling tirelessly since 2007 to standardize activities in this field, and while a late 2010 completion date is currently being penciled in, we're not holding our breath. Anyone remember how long it took 802.11n to escape "draft?"[Thanks, Mademoiselle Y]
