Wednesday, July 2, 2008

Overview of Bluetooth

Bluetooth is a protocol specification for wireless connectivity in a home-like environment.
Bluetooth range is limited to few meters and requires low power management.
It is a big step towards an era of smart rooms and appliances which think and care about themselves and you.
Each Bluetooth device is equipped with a microchip transceiver that 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.
Connections can be point-to-point or multipoint.
The maximum range is 10 meters.
Data can be exchanged at a rate of 1 megabit per second (up to 2 Mbps in the second generation of the technology).
A frequency hop scheme allows devices to communicate even in areas with a great deal of electromagnetic interference.
Built-in encryption and verification is provided.

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