Tuesday, 5 July 2011

Introduction of Bluetooth technology

What is Bluetooth?
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Developed by engineers at Ericsson in the late 1990s, Bluetooth is an increasingly popular technology that enables short-range wireless communication between a variety of electronic devices. Its most significant feature is that it allows devices to "talk" (transfer and synchronize data) wirelessly with one another,
eliminating the need for the seemingly endless tangle of cords, cables, and adapters necessary for a lot of today's technology.

The Bluetooth Special Interest Group (SIG) was founded in 1998 to oversee the development and introduction of Bluetooth technology. Intel, IBM, Nokia, and Toshiba joined Ericsson as the founding
members of the SIG, and more than 8,000 companies have signed on since.

In order to sell products with the Bluetooth specification and logo, manufacturers must be members of the SIG and the devices must meet well-outlined qualifications. These guidelines ensure that Bluetooth wireless devices worldwide can communicate with one another, regardless of manufacturer or country of origin.

Why is it called Bluetooth?

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The Bluetooth wireless specification got its name from Harald Blaatand (translates to "Bluetooth"), a 10th-century Danish king who used diplomacy to negotiate a truce between two feuding factions. In fact, the Bluetooth logo is an overlay of the Danish characters for the king's initials: H.B.

The 21st century's Bluetooth does essentially the same thing — facilitating communication among devices that don't typically interact with one another — leading to some exciting possibilities.
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Range and speed
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Typically, devices with Bluetooth technology have a range of 10 meters (about 30 feet), and data transfer rates up to 3 megabits (375 kilobytes) per second. That makes Bluetooth technology suitable for transferring smaller files such as text documents and cell phone contacts, as well as lower-quality images and audio. At these transfer aspeeds, Bluetooth can't really handle streaming video or high-quality images and audio at this point, but this may change in the future when new Bluetooth standards are introduced. Note: In order to stream video and TV signals, a connection speed of at least 10 Mbps is needed.
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