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smart-akie
Student
Graduate School

What is a bluetooth? Please give bit history for it?

Please brief little history and latest technology.

Thanks in advance.

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Posted by smart-akie on Thursday November 5, 2009 at 6:41 AM and tagged with bluetooth, reference.

Answers:

  1. mantelisz
    mantelisz Student
    High School - 10th Grade

    Bluetooth is an open wireless protocol for exchanging data over short distances (using short radio waves) from fixed and mobile devices, creating personal area networks (PANs). It was originally conceived as a wireless alternative to RS232 data cables. It can connect several devices, overcoming problems of synchronization.

    The word Bluetooth is an anglicised version of Swedish or Danish Blåtand, the epithet of the tenth-century king Harald I of Denmark and 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. Although blå in modern Scandinavic languages means blue during the viking age it also could mean black. So a historically correct translation of Old Norse Harald Blátönn would rather be Harald Blacktooth than Harald Bluetooth.

    The Bluetooth logo is a bind rune merging the Germanic runes (Hagall) and (Berkanan).

    Bluetooth uses a radio technology called frequency-hopping spread spectrum, which chops up the data being sent and transmits chunks of it on up to 79 frequencies. In its basic mode, the modulation is Gaussian frequency-shift keying (GFSK). It can achieve a gross data rate of 1 Mb/s. Bluetooth provides a way to connect and exchange information between devices such as mobile phones, telephones, laptops, personal computers, printers, Global Positioning System (GPS) receivers, digital cameras, and video game consoles through a secure, globally unlicensed Industrial, Scientific and Medical (ISM) 2.4 GHz short-range radio frequency bandwidth. The Bluetooth specifications are developed and licensed by the Bluetooth Special Interest Group (SIG). The Bluetooth SIG consists of companies in the areas of telecommunication, computing, networking, and consumer electronics.

    For technologies just got here.

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    Posted by mantelisz on Thursday November 5, 2009 at 7:04 AM