- Obama’s regulatory agenda will cost U.S. economy $143B next year: report
- Patriot Act author on James Clapper: Fire, prosecute him
- Russia P.M. Medvedev: No amnesty for political prisoners
- Michigan GOP Senate hopeful reminds government is the ‘servant’
- Christmas, by Congress: Members mull a 15-cent tax on trees
- U.S. unemployment falls to five-year low of 7 percent; 203K jobs added
- World mourns Nelson Mandela and celebrates his life; burial set for Dec. 15
- Bill O’Reilly reminds: Nelson Mandela ‘was a communist’
- John Boehner says GOP should support gay candidates: ‘I do’
- Grass-Whopper: Pan-fried cricket burgers go over big in New York City
Minn. company’s lights are more than meets the eye
Question of the Day
ST. CLOUD, MINN. (AP) - Flickering ceiling lights are usually a nuisance, but in city offices in St. Cloud, they will actually be a pathway to the Internet.
The lights will transmit data to specially equipped computers on desks below by flickering faster than the eye can see. Ultimately, the technique could ease wireless congestion by opening up new expressways for short-range communications.
The first few light fixtures built by LVX System, a local startup, will be installed Wednesday in six municipal buildings in this city of 66,000 in the snowy farm fields of central Minnesota.
The LVX system puts clusters of its light-emitting diodes, or LEDs, in a standard-sized light fixture. The LEDs transmit coded messages _ as a series of 1s and 0s in computer speak _ to special modems attached to computers.
A light on the modem talks back to the fixture overhead, where there is sensor to receive the return signal and transmit the data over the Internet. Those computers on the desks aren’t connected to the Internet, except through these light signals, much as Wi-Fi allows people to connect wirelessly.
LVX takes its name from the Latin word for light, but the underlying concept is older than Rome; the ancient Greeks signaled each other over long distances using flashes of sunlight off mirrors and polished shields. The Navy uses a Morse-coded version with lamps.
The first generation of the LVX system will transmit data at speeds of about 3 megabits per second, roughly as fast as a residential DSL line.
Mohsen Kavehrad, a Penn State electrical engineering professor who has been working with optical network technology for about 10 years, said the approach could be a vital complement to the existing wireless system.
He said the radio spectrum usually used for short-range transmissions, such as Wi-Fi, is getting increasingly crowded, which can lead to slower connections.
But there are significant hurdles. For one, smart phones and computers already work on Wi-Fi networks that are much faster than the LVX system.
Technology analyst Craig Mathias of the Farpoint Group said the problems with wireless congestion will ease as Wi-Fi evolves, leaving LVX’s light system to niche applications such as indoor advertising displays and energy management.
LVX Chief Executive Officer John Pederson said a second-generation system that will roll out in about a year will permit speeds on par with commercial Wi-Fi networks. It will also permit lights that can be programmed to change intensity and color.
For the city, the data networking capability is secondary. The main reason it paid a $10,000 installation fee for LVX is to save money on electricity down the line, thanks to the energy-efficient LEDs. Pederson said one of his LED fixtures uses about 36 watts of power to provide the same illumination that 100 watts provides with a standard fluorescent fixture.
Besides installation costs, customers such as St. Cloud will pay LVX a monthly fee that’s less than their current lighting expenses. LVX plans to make money because the LED fixtures are more durable and efficient than standard lighting. At least initially, the data transmission system is essentially a bonus for customers.
- Bill OReilly reminds: Nelson Mandela was a communist
- Spike in battlefield deaths linked to restrictive rules of engagement
- Activists urge Obama to go rogue, sidestep Congress
- 'Hunger Games' delivers Obama's message on income inequality
- Rush Limbaugh: Obama trying to make Mandela death about himself
- Inside China: Nuclear submarines capable of widespread attack on U.S.
- Obama administration issues permits for wind farms to kill more eagles
- Kill team: Obama war chiefs widen drone death zones
- Chris Matthews: GOP less patriotic than South African white apartheid leaders
- MILLER: Obamacare enrollees include 101 members of the House of Representatives
Independent voices from the The Washington Times Communities
The Constitution: Every issue, every time. No exceptions, no excuses. And how to get from here to there.
Why can’t humans just be free to be humans?
Get in the middle of all the action inside and outside the boxing ring.
Find the latest news and happening that effect those in the Washington D.C., Northern Virginia and Maryland Metro region.
White House pets gone wild!