Bluetooth
by Jim Martin
Vluetooth technology has achieved global acceptance such that any Bluetooth enabled device, almost everywhere in the world, can connect to other Bluetooth enabled devices in proximity. Bluetooth enabled electronic devices connect and communicate wirelessly through short-range, ad hoc networks known as piconets. Each device can simultaneously communicate with up to seven other devices within a single piconet. Each device can also belong to several piconets simultaneously. Piconets are established dynamically and automatically as Bluetooth enabled devices enter and leave radio proximity.
A fundamental Bluetooth wireless technology strength is the ability to simultaneously handle both data and voice transmissions. This enables users to enjoy variety of innovative solutions such as a hands-free headset for voice calls, printing and fax capabilities, and synchronizing PDA, laptop, and mobile phone applications to name a few.
Core Specification Versions
� Version 2.0 + Enhanced Data Rate (EDR), adopted November, 2004
� Version 1.2, adopted November, 2003
Specification: Unlike many other wireless standards, the Bluetooth wireless specification gives product developers both link layer and application layer definitions, which supports data and voice applications. Spectrum Bluetooth technology operates in the unlicensed industrial, scientific and medical (ISM) band at 2.4 to 2.485 GHz, using a spread spectrum, frequency hopping, full-duplex signal at a nominal rate of 1600 hops/sec. The 2.4 GHz ISM band is available and unlicensed in most countries.
Interference Bluetooth technologys adaptive frequency hopping (AFH) capability was designed to reduce interference between wireless technologies sharing the 2.4 GHz spectrum. AFH works within the spectrum to take advantage of the available frequency. This is done by detecting other devices in the spectrum and avoiding the frequencies they are using. This adaptive hopping allows for more efficient transmission within the spectrum, providing users with greater performance even if using other technologies along with Bluetooth technology. The signal hops among 79 frequencies at 1 MHz intervals to give a high degree of interference immunity.
Range The operating range depends on the device class:
� Class 3 radios - have a range of up to 1 meter or 3 feet
� Class 2 radios - most commonly found in mobile devices - have a range of 10 meters or 30 feet
� Class 1 radios - used primarily in industrial use cases - have a range of 100 meters or 300 feet
Power The most commonly used radio is Class 2 and uses 2.5 mW of power. Bluetooth technology is designed to have very low power consumption. This is reinforced in the specification by allowing radios to be powered down when inactive.
Data Rate 1 Mbps for Version 1.2; Up to 3 Mbps supported for Version 2.0 + EDR
Bluetooth Technology Benefits Why Choose Bluetooth wireless technology? Bluetooth wireless technology is the simple choice for convenient, wire-free, short-range communication between devices. It is a globally available standard that wirelessly connects mobile phones, portable computers, cars, stereo headsets, MP3 players, and more. Thanks to the unique concept of 'profiles,' Bluetooth enabled products do not need to install driver software. The technology is now available in its fourth version of the specification and continues to develop, building on its inherent strengths -- small-form factor radio, low power, low cost, built-in security, robustness, ease-of-use, and ad hoc networking abilities. Bluetooth wireless technology is the leading and only proven short-range wireless technology on the market today shipping over five million units every week with an installed base of over 500 million units at the end of 2005.
Globally Available The Bluetooth wireless technology specification is available free-of-charge to our member companies around the globe. Manufacturers from many industries are busy implementing the technology in their products to reduce the clutter of wires, make seamless connections, stream stereo audio, transfer data or carry voice communications. Bluetooth technology operates in the 2.4 GHz, one of the unlicensed industrial, scientific, medical (ISM) radio bands. As such, there is no cost for the use of Bluetooth technology. While you must subscribe to a cellular provider to use GSM or CDMA, with Bluetooth technology there is no cost associated with the use beyond the cost of your device.
Range of Devices Bluetooth technology is available in an unprecedented range of applications from mobile phones to automobiles to medical devices for use by consumers, industrial markets, enterprises, and more. The low power consumption, small size and low cost of the chipset solution enables Bluetooth technology to be used in the tiniest of devices. Have a look at the wide range products made available by our members in the Bluetooth product directory and the component product listing.
Ease of Use Bluetooth technology is an ad hoc technology that requires no fixed infrastructure and is simple to install and set up. You dont need wires to get connected. The process for a new user is easy - you get a Bluetooth branded product, check the profiles available and connect it to another Bluetooth device with the same profiles. The subsequent PIN code process is as easy as when you identify yourself at the ATM machine. When out-and-about, you carry your personal area network (PAN) with you and can even connect to others.
Globally Accepted Specification Bluetooth wireless technology is the most widely supported, versatile, and secure wireless standard on the market today. The globally available qualification program tests member products as to their accordance with the standard. Since the first release of the Bluetooth specification in 1999, over 4000 companies have become members in the Bluetooth Special Interest Group (SIG). Meanwhile, the number of Bluetooth products on the market is multiplying rapidly. Volumes have doubled for the fourth consecutive year and are likely to reach an installed base of 500 million units by the close of 2005.
Secure Connections From the start, Bluetooth technology was designed with security needs in mind. Since it is globally available in the open 2.4 GHz ISM band, robustness was built in from the beginning. With adaptive frequency hopping (AFH), the signal 'hops' and thus limits interference from other signals. Further, Bluetooth technology has built-in security such as 128bit encryption and PIN code authentication. When Bluetooth products identify themselves, they use the PIN code the first time they connect. Once connected, always securely connected.
About the author
Source: www.mobilefunn.sitesled.com/articles I am telecommunication engineer by profession and love the education by heart.
Comments About Bluetooth Tech
JVC has launched a Bluetooth transmitter for Apple iPod users at CES in Las Vegas. The new AA-T100BT Bluetooth transmitter is compatible with fourth-generation and newer iPod players, plugging directly into the iPod dock connector to transmit audio to any Bluetooth headset. Powered by the iPod itself there is no bulky battery pack required.
Buy a new Bluetooth adapter.
The world is going wireless. Whether it's Wi-Fi or WiMax, or Bluetooth, wires are going the way of Britney Spear's career. ArtDio, after dabbling in wireless audio last year, has embraced this trend whole-heartedly, adding a trio of Bluetooth-enabled speaker sets to its line up. The BT-132 is a portable stereo Bluetooth set up that can be powered by either 4 AA batteries or an AC adapter. The 132 also includes a built-in microphone so that when a call comes in on your paired mobile phone, the music stops, allowing you to use the BT-132 as a speaker phone.
Get more info at Bluetooth mouse.
Bluetooth SIG announced the winners of its third annual Best of CES Contest to highlight the �hottest, most innovative and consumer friendly Bluetooth enabled products: Overall - Samsung P2 Widescreen Music Player; Headset - Plantronics Voyager 855 Bluetooth Stereo Headset (finalist: Motorola MotoPURE H12); Input - Logitech Cordless Desktop MX5500 Revolution Keyboard (finalist: Newton Peripherals MoGo Mouse X54 Pro); Music - Parrot DS1120 Bluetooth Speakers; (finalist: Samsung P2 Widescreen Music Player; honorable mention Motorola RAZR2 V9); Transfer - Motorola T815 (finalist: Samsung SGH-i617 Blackjack II); Vertical - Ford SYNC, powered by Microsoft Auto (finalist: Baracoda ScanWear; honorable mention Motorola MotoROKR T505)
To find out more just go to Motorola Bluetooth.
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Smart fabric technology and a built in speaker allows users to operate cell phones and iPods through a single touchpad on the strap of the bag.
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Bluetooth Review
By Lee MacRae
The ability to connect all your devices seems to be fraught with more difficulties these days. In the following article we will show you the newest way to connect your personal devices through a technology called Bluetooth. It can actually make things much easier. A Bluetooth connection is quick, painless and wireless, and it has a number of interesting features that can simplify our daily lives.
Bluetooth Headsets If you have a Bluetooth device like a phone or computer, it says in her Bluetooth capable offer you hands-free phone use. You can use a Bluetooth headset on a personal computer with Bluetooth capabilities and and loaded with speech recognition software to enter data to your PC without using the slower keyboard. you can also use it for a video chat over the internet on a web cam or for making low-cost over the web to your family.
Bluetooth GPS devices The Bluetooth GPS receiver gives you many options. You can use it in a car or for hiking. You can even use it when vacationing in a city you don't know. Since they are wireless, they are powered by small batteries. This is a large advantage to the PDA user since the GPS receiver is not being an additional load on an already power hungry PDA. Another great feature of the Bluetooth GPS system is the fact you can put your receiver in a spot that will get better reception
This is a major reason why the Bluetooth variety performs better than others.
As you can see, if you want to rid yourself of wires and cables Bluetooth can definitely help get the various devices in your home or office talking together and all within 30 feet.
Learn all about bluetooth headphones at Bluetooth Parts right now!
Bluetooth Reviews And More
Jawbone is offering their Jawbone Bluetooth headset in exchange for your current Bluetooth headset. The deal is you visit their booth at CES, give up your old BT headset, Jawbone will smash the competing BT headset into tiny little pieces (for recycling purposes of course) and they'll hand you a brand spankin' new Jawbone.
Buy a new Bluetooth adapter.
The Model 4355 Bluetooth transceiver plugs into the dock connector of an iPod or iPhone. The transceiver can send the iPod's music or other audio out via a Class 2 Bluetooth wireless connection to Zoom's new Model 4380 headphones/headset, Zoom's model 4360 stereo receiver, and other Bluetooth-enabled stereo playback devices. Unlike competing Bluetooth transmitters, the model 4355 provides volume control from the iPod or iPhone. Plugged into an iPod, the miniature transceiver becomes a natural extension of the iPod.
Buy a new Bluetooth PDA.
CellPoint Connect AB, developer of high-end Bluetooth headsets today announced the launch of the Flamingo Wired Headset line featuring the Flamingo Music and the Flamingo Mobile versions at the 2008 International Consumer Electronics Show (CES) in Las Vegas, Nevada. The Wired Headsets have been recognized by the CES Innovation Awards and feature the comfortable and secure fit of the EarClick wearing technology. The headsets will be available in a variety of colors.
Get more info at Bluetooth adapters.
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Wireless Barcode Scanner
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Convenient cordless form factor connects to Bluetooth-enabled terminals and computers 100 feet away.
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Know About Adware, Spyware and Anti-virus at adwarespyware.blogspot.com
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