Bluetooth divides transmitted data into packets, and transmits each packet on one of 79 designated Bluetooth channels. Bluetooth uses a radio technology called frequency-hopping spread spectrum. This is in the globally unlicensed (but not unregulated) Industrial, Scientific and Medical (ISM) 2.4 GHz short-range radio frequency band. The implication is that Bluetooth does the same with communications protocols, uniting them into one universal standard.īluetooth operates at frequencies between 24 MHz, or 24.5 MHz including guard bands 2 MHz wide at the bottom end and 3.5 MHz wide at the top. Bengtsson's historical novel The Long Ships about Vikings and King Harald Bluetooth. At the time of this proposal he was reading Frans G. The idea of this name was proposed in 1997 by Jim Kardach of Intel who developed a system that would allow mobile phones to communicate with computers. The name "Bluetooth" is an Anglicised version of the Scandinavian Blåtand/ Blåtann (Old Norse blátǫnn), the epithet of the tenth-century king Harald Bluetooth who united dissonant Danish tribes into a single kingdom and, according to legend, introduced Christianity as well. The specification is based on frequency-hopping spread spectrum technology. Nils Rydbeck tasked Tord Wingren with specifying and Jaap Haartsen and Sven Mattisson with developing. The purpose was to develop wireless headsets, according to two inventions by Johan Ullman, SE 8902098-6, issued and SE 9202239, issued. The development of the "short-link" radio technology, later named Bluetooth, was initiated in 1989 by Nils Rydbeck, CTO at Ericsson Mobile in Lund, Sweden, and by Johan Ullman. A network of patents apply to the technology, which are licensed to individual qualifying devices.
A manufacturer must meet Bluetooth SIG standards to market it as a Bluetooth device.
The Bluetooth SIG oversees development of the specification, manages the qualification program, and protects the trademarks. The IEEE standardized Bluetooth as IEEE 802.15.1, but no longer maintains the standard. Invented by telecom vendor Ericsson in 1994, it was originally conceived as a wireless alternative to RS-232 data cables.īluetooth is managed by the Bluetooth Special Interest Group (SIG), which has more than 30,000 member companies in the areas of telecommunication, computing, networking, and consumer electronics. Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485 GHz) from fixed and mobile devices, and building personal area networks (PANs).
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