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Robert Bell |
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Internet Business/Internet Business |
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2008-04-20 |
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What is Bluetooth If you have recently purchased a cellphone you may have been told whether or not your device was Bluetooth capable. Bluetooth technology enables a completely wireless headset that attaches onto the ear of the user. It allows the user to communicate hands free with no additional wires. Bluetooth technology prides itself on being very secure and having privacy as one of its main focuses. The device looks almost space age like something out of Star Wars since it fits directly on the ear and is very small like most advanced technology. Why Own a Bluetooth? The most obvious reason to own a Bluetooth is for the ability to talk hands free while moving around or driving. Many state are beginning to implement traffic laws that forbid the usage of cellphones without a hands free device. Bluetooth technology will become all important for people that are on the go that need to reach the home or office while driving. Not to mention they are very convenient while shopping at the supermarket and one forgets what they were supposed to purchase. It allows the user to call home to find out what needed to be purchased. About Bluetooth Technology Bluetooth comes equipped with a 2.45 GHz which is a tranceiver that sends and receives in an unused frequency. It is able to be accessed around the world. Also, each bluetooth has its own 48 bit address. The connections are in the format of point to point or multipoint in nature. The furthest range allowed is ten meters at this time, so it is a short range wireless device. Data travels at a speed of one megabit a second. How Bluetooth Can be Used Bluetooth is by far not just to be used as a hands free device for a cellphone. In addition, Bluetooth can allow for the exchange of information between multiple devices such as: digital cameras, GPS receivers, laptops, mobile phones, PC's, printers, and video game consoles. The communication passes through a secure, short-range radio frequency. It is licensed on a global level. Tom Paine writes for The Tech FAQ and is the author of articles such as bluetooth.shtml>Bluetooth, Wireless Mouse, and Smartphone.
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Garrett Pierson |
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Technology/Mobile |
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2007-06-27 |
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Bluetooth was originally designed as an industry standard, for cross communication between devices, the idea was to create a common protocol that could connect all common household devices, like laptops, cellphones, music systems, televisions etc. using a single protocol. One of the biggest applications of Bluetooth is the transformation it has bought about, in the way mobile phones send and receive data with each other. Today there is a plethora of devices that can be linked up to a mobile phone using the Bluetooth protocol.
The first thing you need to know is that there are actually two types of Bluetooth enabled phones in the market, older handsets that support Bluetooth 1.1 or 1.2 based cell phones (the number indicates the version of the Bluetooth technology, so a lower number means an older version of the technology). Newer and more recent mobiles which support Bluetooth 2.0. There are a couple of features that are supported by handsets with Bluetooth 2.0 that are not supported by 1.1, however all features of a 1.1 version will be supported by 2.0 (the technical term for this is backward compatibility).
The objective of this article however is not to be a technical white paper, but to actually mention some of the really useful Bluetooth enabled gadgets that are available for mobile phones today. So without further specifications and details lets get straight to the list
Bluetooth Headsets
The most popular accessory which supports Bluetooth is the Bluetooth headset, almost all Bluetooth enabled phones support the Bluetooth headset, and the newer version of Bluetooth actually has support for the latest in music listening, Bluetooth enabled stereo headsets. The stereo headsets are a direct result of the implementation of the Bluetooth 2.0 technology, all phones that support streaming of audio in Bluetooth stereo will mention that they support stereo headsets or they usually mention that they support A2DP (Advanced Audio distribution profile).
Most high end phones today offer the stereo Bluetooth headsets as an accessory, especially newer Motorola phones have started supporting the A2DP technology, Nokia, Samsung and LG have also followed suit. So if you are a big music fan and love your music, check to see if your phone supports A2DP and go and get your self a stereo Bluetooth headset. Some popular manufacturers of both stereo and normal Bluetooth headsets are Motorola, Nokia, Samsung, Jabra.
Bluetooth Printers
Click and Print is no longer a thing associated with cameras, today you can use your cell phone to take pictures, and simply send them to the nearest Bluetooth enabled printer to print them out, initially Bluetooth printers were used by laptop owners to get easy printing done without any wires at all, however with time Bluetooth enabled printers have become quite the rage and you can simply turn on the Bluetooth on your phone, search for the nearest Bluetooth enabled printer and send copies of your favourite photographs to be printed. And yes! It is actually at the press of a button. Printers supporting Bluetooth are available from all major printer manufacturers like HP, Canon, Compaq etc.
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3 |
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Mark Allen |
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Technology/Technology |
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2007-01-18 |
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These days, all communication technology faces the issue of privacy and identity theft, with Bluetooth being no exception. Almost everyone knows that email services and networks require security. What users of Bluetooth need to realize is that Bluetooth also requires security measures as well.
The good news for Bluetooth users is that the security scares, like most scares, are normally over dramatized and blown entirely out of proportion. The truth being told, these issues are easy to manage, with various measures already in place to provide security for Bluetooth technology.
It's true that there have been some Bluetooth phones that have been hacked into. Most devices that are hacked into are normally those that don't have any type of security at all.
In depth articles on Bluetooth: http://www.simplyusedphones.com/bluetoothfront.html
According to Bluetooth specialists, in order to hack into a Bluetooth device, the hacker must:
1. Force two paired devices to break their connection.
2. Steal the packets that are used to resend the pin.
3. Decode the pin.
Of course, the hacker must also be within range of the device, and using very expensive developer type equipment. Most specialists recommend that you have a longer pin, with 8 digits being recommended.
Fundamentals of security
The "pairing process" is one of the most basic levels of security for Bluetooth devices. Pairing is two or more Bluetooth devices that recognize each other by the profiles they share - in most cases they both must enter the same pin.
The core specifications for Bluetooth use an encryption algorithm, which is completely and entirely secure. Once the devices pair with each other, they too become entirely secure.
Until they have successfully paired, the Bluetooth devices won't communicate with each other. Due to this pairing process and the fact that it is short range - Bluetooth technology is considered to be secure.
As the news has indicated, experienced hackers have developed ways to get around this level of basic security. There are ways to get around this threat, as you can install software to prevent hackers from getting in.
With Bluetooth becoming more and more popular, it's really no wonder that security is always in question. As Bluetooth gets bigger and better, security will always be something that no one really takes lightly.
If you've been concerned about Bluetooth security in the past, rest assured that newer devices will offer bigger and better security. Preventing hackers from getting in is something every owner is concerned about - and the manufacturers are very aware.
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4 |
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Mark Allen |
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Technology/Technology |
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2007-01-15 |
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Bluetooth is a specification for the use of low power radio communications to wireless phones, computers, and other network wireless devices over short distances. The name Bluetooth is actually borrowed from Harald Bluetooth, a Denmark king more than 1,000 years ago.
The technology of Bluetooth was primarily designed to support simple wireless networking of devices and peripherals, which includes cell phones, PDAs, and wireless headsets. The wireless signals that are transmitted by Bluetooth cover short distances of up to 30 feet, generally communicating less than 1 MPps (Mega Byte per second).
http://www.simplyusedphones.com/bluetoothfront.html
The networks of Bluetooth feature dynamic topology called PAN or a piconet. The piconets contain a minimum of two and a maximum of eight peer devices. The devices will communicate using protocols that are part of the specification.
Even though the Bluetooth standard will utilize the same 2.4 GHz range as 802.11b and 802.11g, the technology isn't suitable for a Wi-Fi replacement. When compared to Wi-Fi, Bluetooth is much slower, limited in range, and actually supports fewer devices.
For short range devices, Bluetooth is rapidly becoming the best. The technology is more popular with cell phones, as Bluetooth headsets are the way to go these days. To use Bluetooth, your cell phone will need to have it enabled, or an infrared device somewhere on the phone.
Upcoming devices are utilizing Bluetooth as well, such as PS3 and the Nintendo Revolution. The wireless controllers will be Bluetooth enabled, which will give players the cutting edge.
http://www.simplyusedphones.com/bluetoothfront.html
If you own a cell phone or other wireless device, you should look into Bluetooth. The technology is nothing short of spectacular, making it something that will be around for years and years to come. As technology gets bigger and bigger, you can expect Bluetooth to advance as well.
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5 |
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James Murray |
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Business/Business |
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2008-05-04 |
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a) Bluetooth Technology, And Their Advantages And Disadvantages Bluetooth has a lot to offer with an increasingly difficult market place. Bluetooth helps to bring with it the promise of freedom from the cables and simplicity in networking that has yet to be matched by LAN (Local Area Network). In the key marketplace, of wireless and handheld devices, the closest competitor to Bluetooth is infrared. Infrared holds many key features, although the line of sight it provides does not go through walls or through obstacles like that of the Bluetooth technology. Unlike infrared, Bluetooth is not a line of sight and it provides ranges of up to 100 meters. Bluetooth is also low power and low processing with an overhead protocol. What this means, is that it is ideal for integration into small battery powered devices. To put it short, the applications with Bluetooth are virtually endless. Disadvantages, Bluetooth has several positive features and one would be extremely hard pressed to find downsides when given the current competition. The only real downsides are the data rate and security. Infrared can have data rates of up to 4 MBps, which provides very fast rates for data transfer, while Bluetooth only offers 1 MBps. For this very reason, infrared has yet to be dispensed with completely and is considered by many to be the complimentary technology to that of Bluetooth. Infrared has inherent security due to its line of sight. The greater range and radio frequency (RF) of Bluetooth make it much more open to interception and attack. For this reason, security is a very key aspect to the Bluetooth specification. Although there are very few disadvantages, Bluetooth still remains the best for short range wireless technology. Those who have tried it love it, and they know for a fact that Bluetooth will be around for years to come. b) Bluetooth Technical Operations Of Wireless Link Technology Bluetooth is a high speed, low powered wireless link technology that is designed to connect phones or other portable equipment together with little to no work required by the user. Unlike infrared, Bluetooth does not 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 is important, is the fact that Bluetooth devices will not 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 is 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 is 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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6 |
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Mark Allen |
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Technology/Technology |
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2007-01-22 |
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Version 1.1 and earlier
Since the technology of Bluetooth was introduced in 1998, several specification versions have been released. Versions 1.0 and 1.0B had too many issues and problems for manufacturers to develop devices for Bluetooth. The main issue was the lack of communication among the devices.
The core specification version 1.1 is the first successful operating version of Bluetooth. Version 1.1 corrected a majority of the bugs and problems found in earlier versions.
Go here and see the newest Bluetooth Headsets: http://stores.channeladvisor.com/socaltel/Items/BLUEV510?
Version 1.2
Many of the newer Bluetooth devices, such as the newer cell phones are being sold with the newer Bluetooth version 1.2. This version offers backward compatibility with Bluetooth 1.1, faster transmission speeds, received signal strength, and a host controller interface (HCI) support for 3 wire UART.
Bluetooth version 2.0
It's true that there may be multiple communication technologies, although they all share one common trait - faster is better. Bluetooth specialists realized this, and therefore worked on improving the speeds of version 1.2. The newest version, version 2.0 + EDR (Enhanced Data Rate) was announced in 2004 and became available in late 2005.
Version 2.0 delivers data transfer rates of up to three times that of the original version of Bluetooth. Version 2.0 also provides enhanced connectivity. With Bluetooth 2.0 + EDR, you'll be able to run more devices at the same time - with more efficiency.
Computers and even computer related devices are expected to be some of the first devices to incorporate Bluetooth 2.0 + EDR, followed of course by audio and imaging devices.
Version 2.0 is backward compatible with previous versions, three times faster, and offers an enhanced data rate of 2.1 MB a second. It also offers broadcast and multicast support, along with a further enhanced bit error rate performance, making it the best Bluetooth has ever seen.
Go here and see the newest Bluetooth Headsets: http://stores.channeladvisor.com/socaltel/Items/BLUEV510?
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7 |
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Mark Allen |
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Technology/Technology |
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2007-01-15 |
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Below, you'll find a list of the most used terms in Bluetooth technology. They can serve as a look up, or to help you learn more about Bluetooth terms in general.
2 in 1 handset
The situation where a subscriber's handset is acting as a remote handset to a base unit that provides a network connection.
3G
Third generation, referring to the next generation of digital phone technology.
802.11 WLAN
A wireless LAN specification defined by the IEEE.
Access code
Each base band packet will start with an access code, which can be one of 3 types - CAC, DAC, and IAC.
ACK
Acknowledge.
ACL
Asynchronous Connectionless Link. This is one of the two types of data links that are defined for Bluetooth.
ACO
Authenticated Ciphering Offset.
Active mode
During the active mode, the unit will actively participate on the channel. The master will schedule the transmission based on traffic demands from the different slaves.
AP
Access point.
Authentification
The process of verifying who is at the opposite end of the link.
Authentification device
A device whose identity has been verified during the lifetime of the current link based on the authentification procedure.
Baseband
This describes the specification of the digital signal processing aspect of the hardware - the controller - which carries out the baseband protocols.
BB
Abbreviation of baseband.
BD
Bluetooth device.
BER
Bit Error Rate.
More on Bluetooth Visit here: http://www.simplyusedphones.com/articles.html
The above is more of an intro to the terms that are used with Bluetooth. Bluetooth currently has hundreds of devices, making it the best wireless solution in the world. With more coming out every day, you can bet that Bluetooth will be around for many years to
come.
If you are new to Bluetooth, the terms used can be very helpful. There are hundreds of glossary terms that apply to Bluetooth, many of which describe shortcuts to common terms. You can learn a lot by reading over the meanings, especially if you have never used Bluetooth technology before.
Those of you who have experience with Bluetooth, can look over the glossary of terms to brush up on your knowledge or just check out what an unfamiliar term actually means. Nothing is complicated with the meanings, although they make take some getting used to.
Once you have been around Bluetooth for a while, you'll find yourself right at home with the terms and meanings to the technology. All you need to do is play around with it, and read books or manuals whenever you get the chance. Before you know it, you'll be a professional in the vast world of Bluetooth wireless.
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8 |
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David H. Urmann |
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Computer/Computer |
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2008-04-04 |
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For individuals of you not recognizable with the word, Bluetooth refers to a wireless procedure (or locate of system calculated for short-range electronic request more often than not less than 30 feet in coldness. even though the knowledge has be approximately for more than a few years, Bluetooth hold up for Personal computer users has been limited due to hardware manufacturer focus on the additional customary 802.11 wireless system protocol. In realism, Bluetooth and wifi attain dissimilar purpose and every has its pros and the cons. The Mobile Telephone the Bluetooth Headsets The cellular telephone group of people has long embrace Bluetooth skill, developing and cleansing many wireless devices. Single of the additional popular Bluetooth application for cellular telephones has be cordless headset, which allow user to leave their phone in their bag or pocket at the same time as still being able to make and take delivery of calls. The Bluetooth headsets are usually tremendously lightweight, worn out over one ear and attain talk times from one-four hours previous to requirement a recharge. Bluetooth Personal Computer Headset? So if cellular telephone users have affectionately embrace Bluetooth headsets, why not the Personal computer the group of people? At the occasion of script, this author know of no PC hardware producer who has intended a Bluetooth headphones first and foremost for use with a Personal computer. On the other hand, there is not anything to put off a Personal computer user from using a mobile phone Blue tooth Headset with their Personal computer. Keep in mind though, these headset were at first envisioned for mobile phone use and might need a bit of change before they ll carry out as well as corded headset on your personal computer. USB Bluetooth Adapter If not you own a comparatively luxurious notebook PC, odds are that your central processing unit does not natively hold up the Bluetooth procedure. If this is the container, you will could do with an Adapter Lock or Dongle Lock in arrange to make your central processing unit Bluetooth enabled . Bluetooth adapters are usually extremely little a little figure of inches long and insert into an empty USB port on your processor. When purchase an adapter it s dangerous that you pay money for one that ropes the headset protocol . The headphones protocol is just a set of rules, which enable your Bluetooth adapter to communicate with and make use of Bluetooth headsets in its vicinity. If your adapter does not hold up the headset protocol, no quantity of tweaking will obtain your headset operational with your Personal. The Adapters usually run between twenty - eighty USD and can be purchase at most Personal computer retailer. Buying a Bluetooth Headset The Bluetooth headset for cellular phones are usually extremely exclusive when compare with conservative corded Personal headsets. Depending on where you purchase your headset, you could use up wherever from $20 to $200+ USD. If you are look for a comparatively reasonably priced headset that will just enable you to create wireless VoIP calls using your Personal computer, I advocate looking on Ebay. Even though prices vary considerably on Ebay between merchants for similar products, overall they are considerably less expensive than purchasing the same headset from a telephone store. A utterance of watchfulness on the subject of Ebay though; ensures that you read the very well turn out linked with shipping expenses.
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Mark Allen |
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Self Improvement/self help |
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2007-01-22 |
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The amazing technology of Bluetooth presents a great way of exchanging data between two wireless devices. Unlike telephones, there are no wires or messy leads to worry about. You can enjoy wireless communications with short distances of up to thirty feet.
Bluetooth also offers interoperability, meaning that you can use your portable Bluetooth device to connect with existing Bluetooth points. This way, you won't have to carry a data lead or CDs of drivers around with you everywhere you go. You can enjoy the best of wireless without having to worry about installing your software.
With today's Bluetooth, you can use your PDA and cell phone to surf the net or check emails as you travel. If you are in the business field, this can be very beneficial, especially if you like to check your email throughout the day. Bluetooth will enable you to check your email no matter where you are – which is great news for those who like to travel.
Go here and see the newest Bluetooth Headsets:
http://stores.channeladvisor.com/socaltel/Items/BLUEV510?
Bluetooth will also enable to you to transfer files as well, such as MP3 and photo to and from your mobile device. Bluetooth dominates the world of short range wireless, enabling you to do more than you may have thought possible.
One of the best things to Bluetooth and something everyone loves is the wireless headset. Bluetooth offers wire free headsets for your cell phone or computer, which is great for those who like to walk around or talk on the phone in the car, without having to worry about your hands getting in the way.
Go here and see the newest Bluetooth Headsets:
http://stores.channeladvisor.com/socaltel/Items/BLUEV510?
To make things even better, you can use a Bluetooth GPS device for satellite navigation on your PDA, laptop, or mobile. If you travel - this can be really great to have.
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10 |
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Ian Ball |
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Reference Education/Science |
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2007-08-28 |
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In the tenth century, the King of Denmark was Harald Blatand ( Bluetooth). The surname Blatand literally translates to " Bluetooth" which was named after him, as he was the man responsible to unite Denmark and a portion of Norway into one kingdom. He died during a battle in 986AD. Although he died without unifying all the Nordic nations he became synonymous with the unification of telecommunication and computing. Hence Bluetooth is based on Runes surrounding the legend of Harald Bluetooth. It is built based on the aim to make communication a personal space to mankind. The Bluetooth connection takes place in real time, passing data instantaneously. Bluetooth technology is designed in a way that it operates at 2.4GHz(i.e.) within a short range of wireless communication. The range of Bluetooth is about 10metres, which is approximately 30 feet. It is designed such that it’s light and portable. It contains standards and protocols that makes it mobile, robust, reliable. It is not limited to one manufacturer. The Bluetooth has replaced cables which when compared is very cost effective. The Bluetooth has to be resilient to the interference caused. When Bluetooth is made use for mobile devices it designed to be compact, lightweight, lower power and easy to use. It has a built in mechanism to inquire for devices, connect to them and once connected discover the services they possess in their database. A Simple procedure that makes you understand how Bluetooth connection is established: The master inquires to discover devices available to connect. The slave listens for an inquiry from the master by entering into the inquiry scan mode. When an inquiry is received, the slave responds to the master with a Frequency Hop Synchronization packet (FHS). The FHS contains information that helps to create a connection to the device; the information includes Bluetooth address and class of device. The master collects the FHS information from each device that is being discovered. To connect to one of these devices the master makes use of the Bluetooth address and goes into page mode and pages the device. The slave being paged has to be in page scan mode to enable a connection to the master. For majority of the countries the Industrial, Scientific and Medical (ISM) band used by Bluetooth is available from 2.40-2.4835 GHz. Frequency Hopping Spread Spectrum (FHSS) techniques are made use by Bluetooth in order to improve its immunity from interference. Bluetooth enables adequate frequency coverage with test sequence. Bluetooth Special Interest Group (SIG) works to promote, shape and define the specification and position Bluetooth in the market place. SIG enables protocol definitions for ensuring interoperability. For higher layers protocols it ensures bearer services and host control interface. Communication using Bluetooth technology is encrypted for security. When two Bluetooth devices try to establish a link, the foremost thing they do is to confirm their identities by exchanging their keys. The two devices will not be able to communicate if the keys don’t match. The Bluetooth core specification describes the protocol; the profile document helps applications development. It describes implementation schemes and highlights the core Bluetooth protocol supporting the profile. The example of profiles is a wireless headset for mobile phones. The headset profile is made use as the core specification. The headset profile is built from SPP (Serial Port Profile) and GPP (Generic Access Profile). The GAP defines the procedures that deal with the device discovery and link management. Blue tooth is applied as access points allowing mobile device connection services e.g. PSTN or LAN services. It allows Mobile phone link to Laptop PCs. It is used by PDA, palmtop and desktop PCs. It ensures communication compatibility worldwide by being made use by cell phones, cordless phones, microwaves, and Wi-Fi technology. mobile
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Mark Allen |
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Technology/Technology |
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2007-01-18 |
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The profile found in Bluetooth will describe how the technology is used. Profiles can be best described as vertical slices through the protocol stack. It will define options in each protocol that are mandatory for the profile.
The profile will also define the parameter ranges for each protocol. The concept of the profile is used to decrease the risk of interoperability problems between the different products. These profiles won't normally define any additions to the Bluetooth specification, which is why you can add new profiles where you need them. The
Bluetooth underlying technology is the same, only the specific method that it's used is defined.
Generally speaking, all profiles of Bluetooth are based on the GAP (Generic Access Profile). There are 9 profiles that fall in the GAP category, and they are below:
1. AVRCP - Audio/Video Remote Control Profile
2. ESDP - Extended Service Discovery Profile
3. CIP - Common ISDN Access Profile
4. PAN - Public Area Network Profile
5. HCRP - Hardcopy Cable Replacement Profile
6. GAVDP - Generic Audio/Visual Distribution Profile
7. A2DP - Advanced Audio Distribution Profile
8. VDP - Video Distribution Profile
9. HID - Human Interface Device Profile
To put it another way, usage models will describe Bluetooth device applications and the associated profiles that are used. The usage model focuses mainly on three categories - voice/data access points, peripheral interconnects, and PAN (Personal Area Networking).
In depth on Bluetooth: http://www.simplyusedphones.com/bluetoothfront.html
The voice and data access points involve connecting computing devices to communicating devices through a wireless link. This way, data can be transferred in a wireless manor, without the need of cables or other types of connectivity.
PAN is another very important usage model with strong appeal to business customers. Bluetooth networks are easy to set up in virtually any type of environment. An example would be meeting others at a trade show.
Instead of having contact information beamed via infrared, business cards can quickly and easily be transferred via Bluetooth wireless. The fact is that many documents can be exchanged this very same way - making the uses and possibilities virtually endless.
The Bluetooth profile is very important to the specification, as it enables you to do so much more. You can use peripherals and devices with the profiles, and virtually anything else that you decide.
As Bluetooth expands and gets bigger and better, you can count on the profiles to expand and get even more functions. If you have experience with Bluetooth profiles, you should know exactly what they are and what you can do with them. If not, all you need is a Bluetooth device - and a vivid imagination.
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12 |
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Mark Allen |
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Technology/Technology |
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2007-01-15 |
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The technology of Bluetooth wireless is a short range communications method intended to replace the cables that connect portable or fixed devices while maintaining the highest levels of security.
The key features offered by Bluetooth include low power and low cost. The specification in Bluetooth defines a uniform structure for a wide range of devices to communicate and connect with one another.
http://www.simplyusedphones.com/bluetoothfront.html
The technology behind Bluetooth has achieved global satisfaction such as enabled devices, almost everywhere in the world. Bluetooth devices will connect and communicate without wires through short range and networks known as piconets.
Each device will simultaneously communicate with up to seven other devices within a single piconet, meaning that each device can also belong to several piconets simultaneously. The piconets are dynamically established as Bluetooth enabled devices enter and leave the proximity of radio.
A fundamental to Bluetooth strength is the ability to handle both data and voice transmissions simultaneously. This will enable users to enjoy varieties of innovative solutions such as hands free talking, printing and fax capabilities, and other applications.
Specifications
Unlike other standards of wireless, the Bluetooth specification gives product developers both a link layer and application layer definitions, which will help support data and voice applications.
Spectrum
The Bluetooth technology operates in the industrial and scientific band at 2.4 to 2.485 GHz, using a spread spectrum, frequency hopping signal.
Interference
The adaptive frequency hopping of Bluetooth technology was designed to reduce interference between wireless technologies that share the 2.4 GHz spectrum. Adaptive frequency hopping (AFH) works well within the spectrum to take full advantage of the frequency available.
http://www.simplyusedphones.com/bluetoothfront.html
AFH hopping allows for more efficient transmission within the spectrum, which provides users with greater performance even if they are using other technologies along with Bluetooth.
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13 |
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Mark Allen |
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Technology/Technology |
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2007-01-18 |
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Below, you'll find several specifications for the well known Bluetooth:
1. Throughout the United States and even Europe, the range of frequency is 2,400 - 2,483.5 MHZ, with 79 1-MHz RF (radio frequency) channels. The frequency range in Japan is 2,472 to 2,497 MHz with 23 1-MHz RF channels.
2. A data channel of Bluetooth randomly hops 1,600 times per second between the 79 RF channels.
3. Each Bluetooth channel is divided into time slots, with each one being 625 microseconds long.
4. A Bluetooth piconet has one master and up to seven slaves. The master will transmit in even time slots, while the slaves will transmit in odd time slots.
5. The data in a single packet can be up to 2,745 bits in length.
6. Currently, there are two types of data transfer between devices - SCO (synchronous connection oriented) and ACL (asynchronous connectionless).
7. In a Bluetooth piconet, there can be up to three SCO links containing 64,000 bits per second with each one. To help avoid collision and timing problems, the links of the SCO will use reserved slots set up by the master.
8. A master can support up to three SCO links with either one, two, or even three slaves.
9. The slots not reserved for the SCO links can be used for ACL links.
10. A single master and slave can have one ACL link.
11. ACL is either master to one slave (point to point) or it broadcasts to all of the slaves.
12. The ACL slaves will only transmit when it has been requested by the master. If the master doesn't make the request, the ACL slaves won't transmit anything at all.
More Bluetooth: http://www.simplyusedphones.com/bluetoothfront.html
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14 |
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Dave Text |
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Arts Entertainment/Arts Entertainment |
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2008-03-30 |
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If you are look for a headphones and you desire for to take advantage of Bluetooth ability you will have need of to be familiar with which kind is the majority outstanding right to you. The Bluetooth headsets are intended in a unlike method to agitated headsets so you will need to be on recognizable terms with how they be dissimilar preceding to you make a choice to purchase one. The complicatedness with Bluetooth headset is that they have need of a sequence in order to purpose which means that they be able of by no means be as small or as light as troubled headsets. The add to in dimension will have an result on how it mount around your ears so you will could do with to come across one that is right for you. The bulk well-liked kind of Bluetooth headphones uses a loop to take hold of it in place in the area of your ear. This type of design is the for the most part at ease but may be a lesser amount safe than others that are beneath arrest in put by being stuck into your ear. The the majority significant subject to think about previous to choosing a Bluetooth headset is the cost as price can be in assortment from $10 to $100 or more. There are a lot of dissimilar types of headset to decide from and every have their own compensation and disadvantages so its significant to desire one that is most excellent for you at a cost that you can have enough money. The primary thing you could do with to do is make sure to see how the headphones fits onto your ear and how at ease it is. You could do with to make sure that it will be contented for long phone calls with no any risk of falling off. You also could do with to see if its well-matched with either ear and if you can be dressed in it with a pair of spectacles if you have need of them. After that thing you require to do is learn how to use the headphones and how it operate. The instructions and wheel be supposed to be simple to right of entry and trouble-free to keep in mind. You need to be able to with no trouble adjust the quantity and quickly turn the headphones on and off. The teaching manual should also be trouble-free to appreciate and follow. The most recent thing you need to do is come across out what skin the headset has. You require to be acquainted with what kind of battery it has and how it will attentive you when the power is low, how a lot of plans it can be balancing with, what type of range it has, the noise quality, and how well-matched it is. Of course you will also desire to prefer a Bluetooth headphones that looks good-looking, particularly if you are trade one that is comparatively expensive. If you go after the tips in this piece of writing and do the essential research you should be able to come across a headset that is just the thing for you.
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15 |
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Donald Brown |
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Communications/Wireless |
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2007-02-08 |
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People who use Bluetooth technology, swear by it. Every user trumpets the benefits of Bluetooth; but are these benefits worth the investment?
Review the ten top benefits of Bluetooth, and decide if grabbing on to this technological trend is right for you.
1. Wireless Convenience
There are many benefits of using wireless devices. The basic plus to going wireless is enjoying the freedom to work or communicated without being tied down. You can travel freely and stay connected, without the hassle of connection cables. There is a safety factor to consider as well. Bluetooth technology eliminates the risk of getting tangled with wires if, for example, you're wrestling with a wired headset while trying to drive a car.
2. Instant Gratification
Using Bluetooth devices allows you the freedom to communicate without setting up connections or pushing buttons. When two or more Bluetooth devices enter a range of 30 feet or less, they will instantly begin to communicate with each other. There's nothing more that you need to do.
3. Budget Friendly
The benefits of Bluetooth also extend to your pocketbook. Bluetooth technology is inexpensive for companies to implement. Lower costs lead to lower corporate overhead, and the savings may well be passed on to customers like you.
4. Sets the Standard
Bluetooth is standardized wireless. This means that the technology is guaranteed to meet a high level of compatibility with other wireless devices. Bluetooth technology allows many different devices to connect and communicate, even if they are different models.
5. Less Interference
Bluetooth devices are almost always able to avoid interference from other wireless devices. The Bluetooth uses a technology known as frequency hopping, as well as low power wireless signals.
6. Conserves Energy
Bluetooth uses low power signals, so the technology requires very little energy. One of the most practical benefits of Bluetooth you'll find is in using fewer batteries or less electrical power. Bluetooth won't drain the batteries on mobile devices.
7. Shared Data and Voices
The standard for Bluetooth technology allows compatible devices to share data and voice communications. Of all the benefits of Bluetooth this is most important to drivers who need to talk hands-free on their cellphones.
8. Instant Personal Area Network
You can form your own PAN (personal area network) by connecting up to seven Bluetooth devices within a range of up to thirty feet. Multiples PANS, or piconets, can be set up within a single room
9. Upgrade
Technology is constantly being upgraded, and Bluetooth is ready to comply with whatever changes may come along. Newer versions of Bluetooth are now being released, offering even more advantages. Many have backward compatibility with older Bluetooth versions.
10. Technology For Keeps
Bluetooth technology is used and available worldwide. It's a universal standard that will be around for many years to come. As more and more devices implement Bluetooth technology, more manufacturers will find it necessary to make their products compatible. The "supply and demand" chain reaction has already set Bluetooth as a standard in cutting-edge wireless.
There are more benefits to Bluetooth; just ask anyone who uses this wireless wonder. Find out more about Bluetooth, and then decide if the benefits of Bluetooth can help make your life a little easier.
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16 |
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Marcia Henin |
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Technology/electronics |
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2008-04-10 |
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Bluetooth headset is the best answer for wired headset attached to cellular phones. The first company to come up with a Bluetooth headset is Jabra. It has combined the sleek design of the headset with the comfortable Ear Gel technology. Recently, Jabra has updated its feature - Free Speak with its new latest model. The BT250 V is the latest lightweight headset from Jabra. It permits clear sound and reduces background noise. The control functions are simple to operate. It has a single multifunction button that begins the commands on the phone and turns the unit on or off. Bluetooth headsets come in various configurations. They provide good range and clear sound. For example, Bluetooth 1.1 has a maximum range of 30 feet. The latest Jabra Bluetooth headsets have a maximum talk time of up to 7 hours with up to 200 hours of standby. Wireless and cord free Bluetooth headsets offer best designs and performance. Types of Jabra Bluetooth Headset: The BT250 V headset has a vibration ring feature. It works well even inside a purse or a pocket. Some people consider the size of BT250V may be a bit large. It has two mini gels, which gives superior sound clarity. The BT250V is one of the least expensive Bluetooth headsets in the market. The BT250V is an amazing combination of competitive price, good performance, good design and great battery life. The original BT2040 Bluetooth headset features 660min of talk time with six months of standby time. This Bluetooth requires only one AAAA battery and does not need charging. Even, it has the wireless connectivity up to a range of thirty feet. It supports both headsets and hands-free profiles. The Jabra Bluetooth headset with sliding boom employs a sliding boom to answer or end calls. This sleek design offer both vibrating and visual alert modes. The features of BT500 are: 1. Eight hours talk time 2. Bluetooth version 1.2 compatible 3. Additional LED for more feedback 4. Mute features The BT800 is the newest Jabra wireless Bluetooth that feature Bluetooth 1.2, a backlit LCD display for caller ID and a new DSP technology to improve the sound quality. Bluetooth software and Bluetooth compatible accessories is necessary to use Bluetooth wireless technology. Submitted by Content Editor at Inter-dev - Internet marketing company, On behalf of 1888express.com – A Cell phone accessories website, provider of Bluetooth Parrot>Bluetooth Parrot and Jawbone.
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17 |
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Bluecellworld |
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Technology/Technology |
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2007-11-16 |
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In modern era wireless headset has become the necessary evil for everyone who are having mobile phones. As bluetooth technology has brought a great revolution in the filed of Telecommunication, so everyone walks in search of wireless headset to keep their hands free of holding their mobile phones.
Bluetooth that is a technology that is used to connect more than one device to transfer data or for communication within a short range. This helps us to get rid of wires and enough time to get information. Bluetooth Headset is simple enough having a speaker and microphone that fits snugly into your ears. A headset frees up your hands while you phone and drive, walk, type, shop, or just lie around.
If you own any Bluetooth headset, you can use it with your cellular phone, you can also use it together with your Windows XP PC. However, you just need to know how to pair. Many of you already may have attempted to pair up the headset with your PC just to find out whether the built-in Bluetooth stack in Windows XP Service Pack 2 support the headset or not.
Bluetooth Profiles:
Although this is Bluetooth's version 2.0 now-a-days but still many Bluetooth headsets manufacturers are using the previous version 1.1 and 1.2. There are some profiles Bluetooth profiles which are kept in mind while manufacturing bluetooth devices so that they can work with current and future bluetooth enabled products. Here are some of them most popular profiles:
Generic Access Profile (GAP)
Cordless Telephony Profile (CTP)
Service Discovery Application Profile (SDAP)
Synchronization Profile
Generic Object Exchange Profile (GOEP)
File Transfer Profile
LAN Access Profile
Dial-Up Networking Profile
Fax Profile
Bluetooth headsets have all these profiles and that is why it is the most demanded Bluetooth accessories in the market. Also they have some more features like their stand by time capacity, talk time, fashionable designing, low weight, small size and more.
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18 |
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Iggy Quazi |
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Internet Business/Ecommerce |
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2007-03-07 |
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You may remember about my investment in a new fancy mobile phone a few months ago, one of the fancy things about my new fancy phone is that it has something known as Bluetooth connectivity. I didn’t really know what this was when I bought the phone, but I knew it was new and worth having and so I have been looking into it since. Here is what I found out: USB Bluetooth Dongle This new technology allows Bluetooth enabled devices, to connect and talk to each other without wires! So, this makes it possible to send your address book, phone numbers, pictures, music and other data stored on your mobile phone, to your computer for safe keeping or data from the PC to your mobile phone, without using any connecting wires. Once set up, I can wirelessly connect my PC to my mobile phone without even taking the phone out of my pocket (in theory) and transfer data by simply dragging and dropping files using the software that came with my Mobile Phone. Most computers however, are not usually Bluetooth enabled, so this is where the USB Bluetooth Dongle, or Adapter comes in. This tiny USB device simply plugs into any USB port on your PC or laptop and allows your computer to receive and transmit using Bluetooth technology. To enjoy the benefits of Bluetooth, one of these is essential. Bluetooth printers are now emerging on the market, meaning that you can print photos directly from your mobile phone without wires too. Bluetooth is set to be the next big thing in the world of mobile wireless connectivity, so watch out for all things Bluetooth. Some Bluetooth trivia: Bluetooth was originally conceived by Ericsson in 1994 when they began a study to examine alternatives to cables that linked mobile phones and accessories. Bluetooth was named after Harald Blatand (or Bluetooth), a tenth century Danish Viking, king who had united and controlled large parts of Scandinavia which are today, Denmark and Norway. Article by Iggy Quazi director of Ecommerce business Mouse2House based in Essex, England stocking a wide range of digital imaging devices. For more info see http://www.mouse2house.co.uk for the latest digital media products.
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19 |
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Computer/Computer |
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2007-10-13 |
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Following its immensely successful Apple iPods, Apple has now come up with yet another hot selling product which is the iPhone that has all of the functionality of cell phones as also an iPod wide screen having touch controls and best of all an Internet enabled device that makes communicating with the outside world a real breeze. One of the more endearing features that you will appreciate in these new iPhones is the iPhone Bluetooth which allows users to talk without the need of wired headsets and which comes with a number of handy features as well.
The iPhone Bluetooth headset has just one button that allows users to receive their phone calls with simple intuition as well. Furthermore, you can get as much as 5.5 hours of talking time with as many as seventy-two hours standby time and this is made possible by its batteries that are made from lithium-ion and which are not only rechargeable but also in-built as well.
Now that the iPhone Bluetooth on Apple has begun to slowly become available it is good to know that it is no more than a minimalist accessory though it still has some very useful features as well, especially when the headset is connected to the dock that is dual charging and you are able to also see the headset charge along with the iPhone’s own charge to let you know when the iPhone Bluetooth is ready for use. And, for an additional twenty-nine dollars you can also get the iPhone Bluetooth Travel cable and also a set of replacement stereo headphones.
In any case, one cannot help but like the iPhone Bluetooth which is also light and simple while the design is very attractive though some would consider it a bit over priced and also not living up to its true potential, and this is something that may not go down to well because after paying one hundred twenty-nine dollars for your iPhone Bluetooth, you would expect that it gives nothing less than high-end performance.
However, you can still take two calls by pushing a button in order to hold an existing call while taking the second call and then all you need to do is push as well as hold the button till it emits a beep to let you know the existing call is over after which you can revert back to the call on hold. And, pairing the Bluetooth with your iPhone is not a real problem given that it has been designed to pair well with your iPhone.
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20 |
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Anna More |
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Computer/Computer |
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2007-10-04 |
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Bluetooth headsets make up one of the fastest wireless markets in the US and around the world. Headsets with Bluetooth wireless technology are capable of working with a variety of other Bluetooth devices. Unlike other headsets, Bluetooth headsets do not require wires of any sort. But it receives information from you portable device through 2.4GHz radio waves. The range of communication for most headsets is somewhere around 10 feet.
There are a wide range of Bluetooth headsets out there. What matters is the taste in styles and preferred features to which is right for you. One of them could be the Samsung WEP410 Bluetooth headset; with class and performance this Bluetooth headset is your perfect companion allowing you to talk effortless anywhere, anytime and in any situation. It is designed to perfectly complement the Samsung Bluetooth capable mobile phones. The WEP410 Bluetooth headset offers style and features that should make it a consideration for anyone looking to be cool and sleek.
The Samsung WEP410 Bluetooth headset provides a talk time of 4 hours and stand by time of 70 hours. The Samsung WEP410 Bluetooth headset handles calls with a multifunction button and control of the volume can be accessed from the headset itself. You get voice dialing support with the Samsung WEP410 Bluetooth headset and can be used with cellular phones having the voice dial capabilities. It is small and light weighing about 7.4g and operating about 30 feet in range. So you can walk and talk with out having your phone with you.
So whenever you buy a Bluetooth headset you should make sure you are buying the right thing. The weight of the Bluetooth headset you are going to buy is important. The Samsung WEP410 is a wonderful device; it gives you freedom from the messy cables and creates connection between you and your personal computer or mobile phone wirelessly. A small and comfortable device in your ear can make a difference in your lifestyle. The quality the voice in a Bluetooth headset device is simple crystal clear.
The Samsung WEP410 Bluetooth headset is the next generation of wireless peripherals. The number of advantages in choosing a Bluetooth headset is you can use it with any Bluetooth enabled device and you can both use it in the comforts of your home and office. The Samsung WEP410 Bluetooth headset device is on the cutting edge technology. Bluetooth wireless technology makes lives much easier but especially the WEP410 by Samsung. The Samsung WEP410 Bluetooth headset makes it easy when you are in the house at the same time preparing your food or making some small repairs in your house. You can use it when you are jogging, walking your dog and when you are driving your kids to school.
There are so many things that you can do with the Samsung WEP410 Bluetooth headset. It is a hands free device to doing the multi-tasking moments you would want to do to get things done in a flash and even enjoy doing it. If you want to walk and talk you better think twice.
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