Bluetooth
Bluetooth
Bluetooth (pronounced /ˈbluːtuːθ/) is a wireless technology standard used for exchanging data between fixed and mobile devices over short distances. It was originally conceived as a wireless alternative to RS-232 data cables.
Etymology
The name "Bluetooth" is an anglicised version of the Scandinavian Blåtand/Blåtann, the epithet of the tenth-century king Harald Bluetooth 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.
History
Bluetooth was developed by telecommunications company Ericsson in 1994. It was later formalized by the Bluetooth Special Interest Group (SIG), which now oversees its development and manages its licensing.
Functionality
Bluetooth uses a radio technology called frequency-hopping spread spectrum, which divides the data being sent and received into packets and transmits each of these packets on one of 79 designated Bluetooth channels. Each channel has a different frequency.
Related Terms
- Bluetooth Low Energy (BLE): A power-efficient variant of the classic Bluetooth technology, designed for short bursts of long-range radio connection.
- Bluetooth SIG: The Bluetooth Special Interest Group, a body that oversees the development of Bluetooth standards and the licensing of Bluetooth technologies and trademarks to manufacturers.
- Bluetooth pairing: The process that connects two Bluetooth devices together. Once they're paired, they can exchange data and communicate with each other.
- Bluetooth profile: A specification for how a device uses Bluetooth. It outlines the necessary services, protocols, and device roles for a particular use case.
External links
- Medical encyclopedia article on Bluetooth
- Wikipedia's article - Bluetooth
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