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Bluetooth was officially introduced by telecoms
vendor Ericsson in 1994 and its intended basic
purpose was to be a wire replacement
technology in order to rapidly transfer voice and
data.
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The word Bluetooth is an anglicised version of the
Scandinavian Bltand/Bltann, the epithet of the
tenth-century king Haral I of Denmark and parts of
Norway who united dissonant Danish tribes into a
single kingdom. The implication is that Bluetooth
does the same with communications protocols,
uniting them into one universal standard.
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Bluetooth technology eliminates the need for
numerous and inconvenient cable attachment.
This technology enables user to automatically
and easily connect a wide range of computing
and telecommunication devices.
Bluetooth make wireless communication and
network between devices in a small localized
area.
Bluetooth is actually a standard for wireless
communication between devices within a range
of 10 meters.
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Bluetooth is a high-speed, low-power microwave
wireless link technology, designed to connect
phones, laptop, PDAs and other portable
equipment together.
Unlike infra-red, Bluetooth does not require and
line-of-sight positioning of connected devices
like infra-red.
Two Bluetooth products can exchange theiraddresses and capabilities just after coming
within the range of about 10 meters.
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Connections can be point-to-point or multipoint.
The maximum range is 10 meters but can be
extended 100 meters by increasing the power.
Bluetooth devices are protected from radio
interference by changing their frequenciesarbitrarily up to a maximum of 1600 times a
second, a technique know as frequency hopping.
Piconet is the important factor in Bluetooth
connectivity. It is simply a collection of devices
connected through Bluetooth technology.
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ADVANTAGES DISADVANTAGES
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ADVANTAGES DISADVANTAGES
Bluetooth is Automatic
Low Energy Consumption
Share Voice & DataBluetooth Technology is Inexpensive
Bluetooth Devices are Wireless
Accessible From Anywhere
Bluetooth device cannot be
connected with more than
one device at a time.
Bluetooth has a low data rate (i.e.
1MBps) in comparison to infra-red
(i.e. 4MBps).
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V1.1
The Bluetooth version 1.1 is the first truly successful
operating version of Bluetooth technology.
V1.2
Faster transmission speeds (1 Mbps). Improves voice
quality of audio connections.
V2.0+EDR
Enhanced Data Rate. Three times faster than the
original Bluetooth specification. Multiple-
connectivity.
V2.1+EDREnhanced Data Rate. Improved Pairing.Enhanced Power Optimization.
High Speed. Uni-cast Connectionless Data.
Enhanced Power Control.V3.0+HS
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END