an-introduction-to-bluetooth


An Introduction to Bluetooth

Suchitav Khadanga and Dr. K.R.Suresh Nair
NeST Research & Development Center
Plot # 43,CEPZ, Cochin
India-682030
suchitav@suchitav.net

Introduction

Bluetooth, the new technology named after the 10th Century Danish King Harold Bluetooth, is a hot topic among wireless developers. It was designed to allow low bandwidth wireless connections to become so simple to use that they seamlessly integrate into your daily life. Bluetooth is a proposed Radio Frequency (RF) specification for short-range, point-to-multipoint voice and data transfer. Bluetooth can transmit through solid, non-metal objects. Its nominal link range is from 10 cm to 10 m, but can be extended to 100 m by increasing the transmit power. It is based on a low-cost, short-range radio link, and facilitates ad hoc connections for stationary and mobile communication environments.

A simple example of a Bluetooth application is updating the phone directory of your mobile phone. Today, you would have to either manually enter the names and phone numbers of all your contacts or use a cable or IR link between your phone and your PC and start an application to synchronize the contact information. With Bluetooth, this could all happen automatically and without any user involvement as soon as the phone comes within range of the PC! Of course, you can easily see this expanding to include your calendar, to do list, memos, email, etc.. This is just one of many exciting applications for this new technology! Can you imagine walking into a store and having all the sale items automatically available on your cell phone or PDA? It is a definite possibility with Bluetooth.
The Bluetooth specification is an open specification that is governed by the Bluetooth Special Interest Group (SIG). The Bluetooth SIG is lead by its five founding companies and four new member companies who were added in late 1999. These nine companies form the Promoter Group of the Bluetooth SIG.

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