Light Data Transmission

Light Data Transmission attempts to transfer information using visible light.

The Visible Light Communications Consortium are proposing using light-emitting diodes to turn ordinary household fixtures such as light bulbs, televisions, or even flashlights into data transmission tools. Soon, it may be possible for a person trapped in a burning building to hold up a cell phone to a light fixture in order to notify firefighters of his or her danger. Entire movies will be able to be transferred from one television to the next in seconds just through refracting light waves bouncing between the two televisions. Even headlights on cars could warn the driver of upcoming traffic or road blockage.

The notion was presented approximately seven years ago, and approximately two years ago, it was being demonstrated at a tech show. As of now, the Consortium is attempting to transform that notion into a concept...and from that concept, an idea. Although there are no concrete plans yet, some companies are extremely serious about making it into a standard. The experts plan to use light-emitting diodes (LEDs) to transfer the data. The energy will be harnessed modulators, which essentially cut up the data and reproduce it in binary (1s and 0s) format so a computer can recognize the data. LEDs are much faster than fluorescent light and fiber optic light as they travel at up to 500 mega bits per second.

Experts from the Visible Light Communications Consortium also agree that data transmission through light emitting diodes possesses many advantages in relationship to wireless communication technologies. Light data transmission has security advantages because it is more difficult to intercept without detection than electrical data transmission. Also, privacy is not an issue with light data transmission. If you don’t want someone snooping in your business, just close the door—after all, light can’t pass through opaque objects. The concept still needs a lot of work, though. For instance, the prototypes still require a clear line-of-sight between the transmitter and the receiver; but it is known that light is still susceptible to refraction or diffraction.

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Data transmission — Data transmission, digital transmission, or digital communications is the physical transfer of data (a digital bit stream) over a point to point or point to multipoint communication channel. Examples of such channels are copper wires, optical… …   Wikipedia

  • Remote data transmission — (RDT) was a term used in the 1980 s, primarily in Germany, for the transmission of data between computers over a medium using a communications protocol. At the time, the most widespread form was RDT over the telephone network. Other transmission… …   Wikipedia

  • Transmission — is the act of passing something on.Specifically, it may refer to:*Transmission (mechanics), a gear system transmitting mechanical power, as in a car *Transmission (telecommunications), the act of transmitting messages over distances *Transmission …   Wikipedia

  • Transmission time — In telecommunication networks, the transmission time, also considered as the propagation delay, is the amount of time it takes a bit to go from the start of the link to its destination node. The propagation speed depends on the physical medium of …   Wikipedia

  • Data acquisition — is the process of sampling signals that measure real world physical conditions and converting the resulting samples into digital numeric values that can be manipulated by a computer. Data acquisition systems (abbreviated with the acronym DAS or… …   Wikipedia

  • Data Carrier Detect — Data Carrier Detect, abbreviated as DCD, or alternately Carrier Detect abbreviated as CD, is a control signal present inside an RS 232 serial communications cable that goes between a computer and another device, such as a modem. This signal is a… …   Wikipedia

  • Transmission electron microscopy — A TEM image of the polio virus. The polio virus is 30 nm in size.[1] Transmission electron microscopy (TEM) is a microscopy technique whereby a beam of electrons is transmitted through an ultra thin specimen, interacting with the specimen as it… …   Wikipedia

  • light — light1 lightful, adj. lightfully, adv. /luyt/, n., adj., lighter, lightest, v., lighted or lit, lighting. n. 1. something that makes things visible or affords illumination: All colors depend on light. 2. Physics …   Universalium

  • Data compression — Source coding redirects here. For the term in computer programming, see Source code. In computer science and information theory, data compression, source coding or bit rate reduction is the process of encoding information using fewer bits than… …   Wikipedia

  • Light-emitting diode — LED redirects here. For other uses, see LED (disambiguation). Light emitting diode Red, pure green and blue LEDs of the 5mm diffused type Type Passive, optoelectronic Working principle Electr …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.