Bluetooth Technical Operations
By Lee MacRae
Bluetooth is a high speed, low powered wireless link technology that's designed to connect phones or other portable equipment together with little to no work required by the user. Unlike infrared, Bluetooth doesn't require line of site positioning to work.
Current prototype circuits are contained on a board that is 0.9 cm square, with a much smaller circuit board being developed.
When one Bluetooth device comes in contact with another, they will automatically exchange addresses and details of capability. Then, they can establish a 1 MB link with security that they will use as required. The protocols involved with handle both data and voice, with a very flexible topography.
The technology achieves its goal by embedding tiny, non expensive short range tranceivers into the devices available today. The radio operates on the 2.45 GHz frequency band, and supports up to 721 KBps, along with three voice channels.
Each devices offers a unique 48 bit address from the IEEE 802 standard, with the connections being point to point or multipoint. The max range is 10 meters, although it can be extended to 100 meters by increasing the power. The devices are also protected from radio interference by changing their frequencies, also known as frequency hopping.
What's important, is the fact that Bluetooth devices won't drain battery life. The specification targets power consumption of the device, limiting the drain on the battery. The radio chip will consume only 0.3mA in stand by mode, which is less than 5% of the power that standard phones use.
Bluetooth will also guarantee security at the bit level. The authentification is controlled by the user via a 128 bit key. The radio signals can be coded with anything up to 128 bit. With the frequency hopping, Bluetooth is already very hard to listen into.
The baseband protocol is a combination of both circuit and packet switches. Slots can be reserved for synchronous packets as well. Each packet will be transmitted in a different hop frequency. Normally, a packet covers a single slot although it can be extended to cover up to five slots.
Bluetooth can also support data channels of up to three simultaneous voice channels. Therefore, it's possible to transfer the data while you talk at the same time. Each individual voice channel will support 64 KB.
From a technical standpoint, Bluetooth is very different indeed. It's the best wireless method in the world, surpassing even infrared. For communication on the go, Bluetooth is indeed very hard to compete with.
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Bluetooth Reviews And More
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.
Linux Bluetooth Remote Control (LBRC) is a remote control program that allows a Linux computer to be controlled by a J2ME device via Bluetooth. It is divided into a server part that runs on the computer and reacts to input events and a client part that runs on the J2ME device. The J2ME client sends the device's keycodes, which are translated to keystrokes, mouse movements, mouse clicks, or other input events on the controlled computer.
To learn more go to Bluetooth car kits.
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.
The Bluetooth News Section
iPod Bluetooth
Thu, 06 Jan 2005 07:23:00 EST
naviPlay wireless stereo headphone adapter with integrated remote control is a bundle of untethered freedom.
AirWave Wireless Announces Investment Protection Program for Trapeze Customers
Tue, 10 Jun 2008 00:00:00 EST
AirWave Wireless announced a new investment protection program to provide stable, flexible management for Trapeze Wireless customers, including customers of Trapeze's OEM partners Nortel, 3Com and Enterasys. The new program extends preferential pricing to existing Trapeze customers who transition to the AirWave Wireless Management Suite 6, the industry's leading multi-vendor wireless network management software.
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Samsung WEP200 & Motorola T305
by Subramani
Samsung WEP-200 Bluetooth Headset is your perfect companion, allowing you to talk effortless anywhere, any time, and in any situation. Designed to perfectly complement the current range of Samsung Bluetooth-capable mobile phones, the WEP-200 Bluetooth offers style and features that should make it a consideration for anyone looking for a new Bluetooth headset. Buttons are tactile and easy to press; comes with a black charging case; has good sound quality.Good style, small size (1.5' long). The case is black which makes it fairly discrete. The only thing is the LED flashes about every 3 seconds. Ive never been a fan of flashing LEDs. They attract unwanted attention. This should have been placed in the rear of the unit.Soft as a sigh, light as an undertone, slim as a murmur and as mobile as you are, the Samsung WEP200 brings Bluetooth to your ear. So wear its style for constant, comfortable communication. For more information about Free ringtones
Motorola T305 Bluetooth Speakerphone Retail Packaging
Enjoy effortless and affordable wireless connectivity with the enhanced Motorola Bluetooth Portable Car Kit T305. With a sleek and stylish new design, superior audio capabilities and an intuitive feature set, the palm-sized Motorola T305 is the perfect companion for a busy mobile lifestyle. Optimized for the vehicle, the Motorola T305 lets you obey the law by providing easy, wireless conversations in the car, keeping your hands on the wheel and eyes on the road. Just clip, connect and go!
Nokia N91 Device Features Music Player Intelligently designed music player - optimized for music listening Dedicated playback keys and volume control Enhanced on the go playlist management - edit playlists, add new music Meta data for tracks can be viewed and modified directly on your N91 Enhanced music features: mixer, 5-band equalizer, loudness, music DRC (Dynamic Range Compression) See what is playing when the Nokia N91 is in the idle state Answer calls while listening to music and music pauses and then resumes again when the call is ended Smart integration with music services (easy access to music shop) Music user profile or SIM-less operation allows for uninterrupted listening Transfer any multimedia content from PC to your Nokia N91 (When using the features in this device, obey all laws and respect the privacy and legitimate rights of others) Download unprotected new music over the air to your Nokia N91 (Files not protected through Digital Rights Management technology) For more information about Free ringtones
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For more information visit http://www.ringtonespoint.net
Short Info On Bluetooth
Bluetooth is undoubtedly the more advanced and popular method of transferring ring tones from one mobile phone to another. Bluetooth is software that comes bundled with mobile phone handsets and it allows the gadgets i.e. mobile phones, and computers, to talk to each other wirelessly. It is designed for low � power wireless communication over short distances.
For more information go to Bluetooth keyboards.
Gear4's latest Bluetooth speakers pack a surprisingly decent sound for such a small unit with only 8W speakers. The beauty of this device is that it allows you to beam music from any Bluetooth-enabled gizmo straight to the speakers from a distance of up to 10 metres away from the unit. And because it's wireless, there's less chance of New Year's revellers tripping over trailing cables while dancing to Auld Lang Syne.
For more information go to Bluetooth.
All About Bluetooth
DragonWave Announces 24% Increase in First Quarter Revenue
Fri, 11 Jul 2008 00:00:00 EST
DragonWave Inc. (TSX:DWI)(AIM:DWI), a leading global supplier of next-generation wireless networks, issued financial results for its first quarter of fiscal year 2009 ended May 31, 2008. All figures are prepared in accordance with Canadian generally accepted accounting principles (GAAP) and are reported in Canadian dollars.
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Labels: bluetooth headphone | bluetooth mp3 headset
