WHAT IS BLUETOOTH? AND HOWS WORKS?

Bluetooth is a wireless technology standard for exchanging data over short distances from fixed and mobile devices, and building personal area networks. Bluetooth is a telecommunications industry specification that describes how mobile devices, computers and other devices can easily communicate with each other using a short-range wireless connection.

A Bluetooth device uses radio waves instead of wires or cables to connect to a phone or computer. A Bluetooth product, like a headset or watch, contains a tiny computer chip with a Bluetooth radio and software that makes it easy to connect. When two Bluetooth devices want to talk to each other, they need to pair. Communication between Bluetooth devices happens over short-range, ad hoc networks known as piconets. A piconet is a network of devices connected using Bluetooth technology. When a network is established, one device takes the role of the master while all the other devices act as slaves.

Bluetooth is managed by the Bluetooth Special Interest Group (SIG), which has more than 30,000 member companies in the areas of telecommunication, computing, networking, and consumer electronics. The IEEE standardized Bluetooth as IEEE 802.15.1, but no longer maintains the standard. The Bluetooth SIG oversees development of the specification, manages the qualification program, and protects the trademarks .A manufacturer must meet Bluetooth SIG standards to market it as a Bluetooth device.

  

What is Bluetooth used for? 

Bluetooth make it possible for a user to place hands-free phone calls through a mobile phone or connect wireless headphones to a smartphone's music playlist, for example. Bluetooth technology can simplify tasks that previously involved copious wires strewn among peripheral devices. For instance, with a Bluetooth-enabled printer, one can connect wirelessly with a desktop, laptop or mobile device and print out documents. It is also possible to sync a wireless keyboard with a tablet-style device, such as an Apple iPad or Kindle Fire, or even a DVD player with a television.

Bluetooth versions allowed users of cellular phones, pagers and personal digital assistants to buy a three-in-one phone that could double as a portable phone at home or in the office, get quickly synchronized with information in a desktop or notebook computer, initiate the sending or receiving of a fax, initiate a printout, and in general, have all mobile and fixed computer devices be totally coordinated over a short distance.

Mobile operating systems allow users to stream media, such as movies, television shows and music, to compatible TVs, speakers and media players via Bluetooth. With an eye toward the future of Bluetooth, companies such as LG are manufacturing televisions with built-in Bluetooth technology that can display 3D images users view through special "active-shutter" glasses. Though this technology is in its formative stages, it's gotten an enthusiastic reception from gamers.

Laptop or desktop computers without built-in Bluetooth can gain those capabilities through an inexpensive USB dongle. The one caveat here is Bluetooth technology typically uses considerable battery power, so it's suggested that it be monitored closely by the user to prevent a device's battery from running down.

  
How does Bluetooth work? 

Bluetooth technology requires that a low-cost transceiver chip be included in each device. The transceiver transmits and receives in a previously unused frequency band of 2.45 GHz that is available globally -- with some variation of bandwidth in different countries. In addition to data, up to three voice channels are available. Each device has a unique 48-bit address from the IEEE 802 standard. Bluetooth connections can be point to point or multipoint.


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hello everyone Tech4step blog is explore all techy topics in easy to read and make intresting of "Tech4step" reader.This Blog is handeled by Amit Kumar and Rajesh Kumar.

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