Short-Range Mobile SolutionBluetooth is a specification for a small form-factor, low-cost, short-range radio solution for providing links between mobile computers, mobile phones, and other portable and hand-held devices, and for providing connectivity to the internet. It is based on a radio link that provides fast and reliable transmission of both voice and data. It can carry up to three high-quality voice channels simultaneously at speeds to 1 Mbit/sec, even in noisy environments. Like USB, the specification incorporates both rules for implementing the interface and rules for designing compatible peripherals for the network.
ConnectivityBluetooth allows users to connect to a wide range of devices at one time without cables, and potentially without actively initiating the connection. For example, your PDA could automatically update a copy of your schedule stored on a desktop PC the minute you walked into your office. This connectivity is enabled by a tiny microchip incorporating a radio transceiver that is built into Bluetooth devices. This radio transceiver provides the advantage of being effective through obstacles. Thus, you could ostensibly use a Bluetooth connection to send data from a computer in one room to a printer in the next--right through the wall.
One concern when using such a system is privacy. As Bluetooth operates in the globally available 2.4 GHz frequency, it is conceivable that an unintended recipient could intercept a signal. To combat this, all Bluetooth devices are keyed for their own networks. The transmissions use a sophisticated encoding specification that not only guards against interference, it also ensures that only devices specifically programmed to receive a broadcast will be able to decode it.
Bluetooth uses a flexible, multiple piconet structure for communication. It supports both point-to-point and multipoint connections for full-duplex networks. Currently up to seven slave devices can be configured to use a master radio in one device. Several of the piconets can be established and linked in scatternets to allow flexibility among configurations. Devices in the same piconet have priority synchronizations, but other devices can enter the network at any time. In a full-duplex network, a multiple piconet structure with 10 fully loaded, independent piconets, can maintain aggregate data transfer speeds of up to 6 Mbps.
ConnectivityBluetooth allows users to connect to a wide range of devices at one time without cables, and potentially without actively initiating the connection. For example, your PDA could automatically update a copy of your schedule stored on a desktop PC the minute you walked into your office. This connectivity is enabled by a tiny microchip incorporating a radio transceiver that is built into Bluetooth devices. This radio transceiver provides the advantage of being effective through obstacles. Thus, you could ostensibly use a Bluetooth connection to send data from a computer in one room to a printer in the next--right through the wall.
One concern when using such a system is privacy. As Bluetooth operates in the globally available 2.4 GHz frequency, it is conceivable that an unintended recipient could intercept a signal. To combat this, all Bluetooth devices are keyed for their own networks. The transmissions use a sophisticated encoding specification that not only guards against interference, it also ensures that only devices specifically programmed to receive a broadcast will be able to decode it.
Bluetooth uses a flexible, multiple piconet structure for communication. It supports both point-to-point and multipoint connections for full-duplex networks. Currently up to seven slave devices can be configured to use a master radio in one device. Several of the piconets can be established and linked in scatternets to allow flexibility among configurations. Devices in the same piconet have priority synchronizations, but other devices can enter the network at any time. In a full-duplex network, a multiple piconet structure with 10 fully loaded, independent piconets, can maintain aggregate data transfer speeds of up to 6 Mbps.
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