BLUETOOTH TECHNOLOGY

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"Bluetooth" is a new standard  launched in May 1998 which utilizes a short range radio link  for exchanging information enabling effortless  wireless  connectivity  between  mobile phones, mobile PCs, handheld computers and others .

It aims to replace the  IrDA  spec of  Infrared in mobile  and computing  devices. The  Bluetooth  SIG  ( Special  Interest Group)  was formed  in early 1998  as a result  of the global commitment of the five founding companies, to develop the concept  towards a  technology  standard. It competes  with the 802.11 specification for wireless networking.

By August 99, there were 640 members of the Bluetooth SIG enabling  seamless voice & data  transmission  via wireless, short  range  radio,  this  new  technology  will allow  users, to connect a wide range of devices  easy & quickly  without the need for cable resulting in expanding  communications capabilities for mobile PCS, mobile phones & other devices in & out of the office.

Ericsson contributed  the basic  radio  technology  expertise Toshiba &  IBM  are developing a common  specification for integrating Bluetooth technology,  into mobile devices. Intel is contributing with its advanced chip &  software expertise. Nokia contributes expertise  in radio technology and mobile handset  software. Other  companies  are  being  invited  to support  the core technology, on a  free basis to ensure that Bluetooth can be implemented into many different  devices. 

 The radio will operate on the  globally available  2.45 GHz  " free band " which International travelers,  to use " Bluetooth" enabled  equipment worldwide.

              Bluetooth System

- Operates in the 2.4 GHz Industrial-Scientific-Medical band. 
- 10m to 100m range 
- Uses Frequency Hop (FH) spread spectrum which divides the frequency  band into a number of hop channels. During a connection, radio transceivers hop between channels. 
- Supports  up to eight devices in a piconet ( two or more Bluetooth units sharing a channel ). 
- Built-in security. 
- Non line-of-sight transmission through walls and briefcases. 
- Supports both isochronous  asynchronous services.
                                                                   - Easy integration of TCP/IP for networking. 
- Regulated by governments worldwide.

The Bluetooth technology,  will connect Printers -  Mobile Phones - Hands free Headsets LCD projectors - Modems - Wireless LAN devices - Notebooks - Desktop PCs - PDAs to one another via Bluetooth short-range radio modules installed in each of these devices .


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