Infrared transmission

Basically is same with bluetooth infrared transmission, but the infinite bandwidth different use. The principle is to use visual infrared spectra of invisible red outside light, so because infrared is also a kind of light, so it also has the characteristics of light, it cannot through opaque objects. Not because we can't see, it says it is not infrared exist around, we live in is filled with infrared light, it may be issued from the sun light, may also send, users do not need to use license namely can use infrared light. For example, Slow speed infrared (IR) used in the TV remote control there has been quite a long time, others like video, sound and other remote control is also; TV remote will particular signal encoding, then through infrared communication technology will coding send (usually you can see remote signal light once), and set the infrared receiver on TV, after receiving the coding decode and get the original signal; For example, the solution of the signal to television, the decoder for increasing volume after the action that will increase the volume. Low-speed infrared refers to the transmission rate per second for those in Kbits taller, it applies to transmit short message, text, or files. A low-speed infrared also have high-speed infrared (IR), it is making in the transmission rate per second means for those 4Mbits 1 or other higher transmission rate is still developing. For network solutions to say is concerned, high-speed infrared its foundation, including the file transfer, local area network links even multimedia transmission.

If use on the network? Infrared network applicable to such as the environment of the classroom, or small, enclosed area. For exquisite information security people, infrared network may be a good choice, because it could not penetrate walls transmission, bits of the building will be impossible to outside to distribute in direct intercepted the infrared signal within the building. But relatively, this also ─ ─ constitutes its shortcomings extremely vulnerable to wall infrared transmission of obstacles. On the other hand, infrared is also a kind of low cost wireless transmission form. Line of Sight infrared (letter) - like lasers - a straight Line, because the data transfer form on straight forward movement way, if transmission without any obstacles, then the data transmission can say quite quickly and has efficiency, because infrared also is a kind of light, so it going for the speed of light. But like sun's rays, infrared cannot penetrate walls or large object, therefore, in data transceiver ends of mutual alignment (i.e. to can see each other) to communicate, the mobile communication may often mobile location concerned, the situation is very adverse, and vulnerable to rain, snow or the fog of interference.