06-09-2017, 09:55 AM
Bluetooth is a wireless technology standard for short-distance data exchange (using short wavelength UHF radio waves in the ISM band from 2.4 to 2.485 GHz) of fixed and mobile devices and the construction of personal area networks. Invented by telecommunications provider Ericsson in 1994, it was originally conceived as a wireless alternative to RS-232 data cables.
Bluetooth is managed by the Bluetooth Special Interest Group (SIG), which has more than 30,000 member companies in the areas of telecommunications, computing, networks and consumer electronics. The IEEE Bluetooth standard as IEEE 802.15.1, but no longer maintains the standard. The Bluetooth SIG monitors the development of the specification, manages the qualification program and protects trademarks. A manufacturer must meet Bluetooth SIG standards to market as a Bluetooth device. A patent network applies to technology, which are authorized for individual qualification devices.
Nils Rydbeck, CTO of Ericsson Mobile in Lund, Sweden, and Johan Ullman, started the development of "short link" radio technology, later called Bluetooth. The aim was to develop wireless hearing aids, according to two inventions by Johan Ullman, SE 8902098-6, published 1989-06-12 and SE 9202239, published on 1992-07-24. Nils Rydbeck commissioned Tord Wingren with specification and Jaap Haartsen and Sven Mattisson with development. Both worked for Ericsson in Lund. [9] The specification is based on frequency hopping spread spectrum technology.
Bluetooth is managed by the Bluetooth Special Interest Group (SIG), which has more than 30,000 member companies in the areas of telecommunications, computing, networks and consumer electronics. The IEEE Bluetooth standard as IEEE 802.15.1, but no longer maintains the standard. The Bluetooth SIG monitors the development of the specification, manages the qualification program and protects trademarks. A manufacturer must meet Bluetooth SIG standards to market as a Bluetooth device. A patent network applies to technology, which are authorized for individual qualification devices.
Nils Rydbeck, CTO of Ericsson Mobile in Lund, Sweden, and Johan Ullman, started the development of "short link" radio technology, later called Bluetooth. The aim was to develop wireless hearing aids, according to two inventions by Johan Ullman, SE 8902098-6, published 1989-06-12 and SE 9202239, published on 1992-07-24. Nils Rydbeck commissioned Tord Wingren with specification and Jaap Haartsen and Sven Mattisson with development. Both worked for Ericsson in Lund. [9] The specification is based on frequency hopping spread spectrum technology.