The name Bluetooth comes from the 10th century Danish king Harald Blatand - English translation Harold Bluetooth (because he was very fond of eating blue plums, so his teeth were blue every day). During the preparatory phase of the industry association, an expressive name was needed for the new technology. The organizers, after a night's discussion on the history of Europe and the future of infinite technology, some thought that the name of King Blatand, who united the present Norway, Sweden and Denmark, and whose eloquent and sociable personality was akin to that of this upcoming technology, which was to be defined as one that allowed for the coordination of the different industrial sectors, keeping the various system areas working in harmony with each other. The technology will be defined as allowing coordination between different industrial sectors, maintaining good communication between various system areas, such as computing, cell phones and the automotive industry. And so the name was decided.
About Bluetooth SIG
The Bluetooth SIG (Bluetooth SIG) is a trade association comprised of leading vendors in the telecommunications, computing, automotive, industrial automation and networking industries. The group is dedicated to advancing Bluetooth wireless technology by developing and bringing to market a low-cost wireless specification for short-range connected mobile devices.
The Bluetooth SIG has offices around the world including: Seattle, USA (global headquarters); Kansas City, USA (US headquarters); Malm?, Sweden (EMEA headquarters); and Hong Kong, China (Asia Pacific headquarters).
The entire staff of the Bluetooth SIG consists of Dr. McFly, Executive Director, and Anders Edlund, Director of Marketing, as well as sales staff, engineering specialists, and operations specialists. In addition to the support of the Bluetooth SIG (Bluetooth SIG), volunteers from member companies play an important role in running the Bluetooth SIG.
The founding companies of the Bluetooth SIG are Agere, Ericsson, IBM, Intel, Microsoft, Motorola, Nokia, and Toshiba, and on October 13, 2006, the Bluetooth SIG (Bluetooth SIG) announced that Lenovo has replaced IBM as a founding member of the organization, effective immediately. By becoming a founding member, Lenovo joins other industry leaders Jaar Systems, Ericsson, Intel, Microsoft, Motorola, Nokia and Toshiba in holding a seat on the Bluetooth SIG Board of Directors and actively promoting the Bluetooth standard. In addition to the founding members, the Bluetooth SIG includes more than 200 Alliance member companies and approximately 6,000 application member companies.
Bluetooth wireless technology is the simplest and easiest way to communicate wirelessly over short distances between two devices. It is widely used around the world to wirelessly connect cell phones, portable computers, cars, stereo headsets, MP3 players, and many other devices. Thanks to the unique concept of "profiles", Bluetooth products no longer need to install driver software. The technology is now in its fourth specification and continues to evolve while maintaining its inherent strengths - compact radios, low power, low cost, built-in security, robustness, ease of use, and instant networking capabilities. At the end of 2005, it had shipped more than five million units per week and had more than 500 million installed base stations.
Globally Available
The Bluetooth wireless technology specification is freely available to our member companies worldwide. Manufacturers in many industries are actively implementing this technology into their products to reduce the use of messy wires, enable seamless connectivity, stream stereo sound, transfer data or communicate by voice. Bluetooth technology operates in the 2.4 GHz band, a license-free industrial, scientific and medical (ISM) radio band. Because of this, there is no cost to use Bluetooth technology. However, you must register with your cell phone provider to use GSM or CDMA, and there is no cost to you to use Bluetooth technology other than the cost of the device.
Device range
Bluetooth technology is used in an unprecedented range of products, from cell phones to automobiles to medical devices, and by users ranging from consumers to the industrial market to businesses. Low power consumption, small form factor and low cost silicon solutions allow Bluetooth technology to be used in even the smallest of devices. See the full range of products offered by our members in the Bluetooth Product Catalog and Component Product List.
Easy to use
Bluetooth technology is an instant technology that requires no fixed infrastructure and is easy to install and set up. You don't need cables to connect. It's also effortless for new users - all you need to do is own a Bluetooth-branded product, check the available profiles, and connect it to another Bluetooth device that uses the same profile. The subsequent PIN code process is as simple as if you were at an ATM machine. When you're out and about, you can take your Personal Area Network (PAN) with you and even connect to other networks.
Global Specification
Bluetooth wireless technology is the most widely supported, feature-rich and secure wireless standard on the market today. A worldwide qualification process tests members' products for compliance with the standard. Since the release of the Bluetooth specification in 1999, more than 4,000 companies total*** have become members of the Bluetooth Special Interest Group (SIG). At the same time, the number of Bluetooth products on the market has grown exponentially. For the fourth year in a row, the number of products has grown exponentially, and the number of installed base stations could reach 500 million by the end of 2005.
Bluetooth Technology Versions
1) Bluetooth currently has four versions, V1.1/1.2/2.0/2.1, for the time being.
2) Different versions can be subdivided into Class A(1)/Class B(2) in terms of communication distance.
3) Difference in Versions
1.1 is the earliest version, with a transmission rate of 748~810kb/s. Because of its early design, it is susceptible to interference by products of the same frequency, affecting the quality of communication.
1.2 The same 748~810kb/s transmission rate, but with the addition of (Improved Software) anti-interference frequency hopping. (The technical theory is too in-depth to go into detail!).
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4) Communication Distance Versions
a) Class A is used in high power/long distance Bluetooth products, but due to high cost and high power consumption, it is not suitable for personal communication products (cell phone/Bluetooth headset/Bluetooth Dongle, etc.), and therefore is mostly used in some commercial special purpose applications, and the communication distance is about 80~100M distance.
b)Class B is the most popular standard, the communication distance is about 8~30M, depending on the design of the product, it is mostly used in cell phone/bluetooth headset/bluetooth dongle for personal communication products, the power consumption and the volume are smaller, and it is easy to carry.
5) Regardless of the 1.1/1.2 version of the Bluetooth product, it can basically support Stereo audio transmission, but it can only work as a stand-alone device, and the bandwidth response is not sufficient, so it is not considered to be the best Stereo audio transmission tool.
6) Version 2.0 is an improved version of 1.2, with a transmission rate of about 1.8M/s~2.1M/s, and can work in duplex. It can work in duplex mode, i.e. one side for voice communication, and at the same time, it can also transmit files/high-quality pictures. Some Bluetooth Dongles in Taiwan are already on sale in the market, but there are very few cell phones that support Bluetooth 2.0 version. Not many Bluetooth headsets can actually be used, some Bluetooth products claim to be 2.0 version, but still need to use additional accessories to achieve. So I'm sure it'll take until the end of September/November this year at the earliest to get it to work, and the 2.0 version will of course support Stereo.
7) There's a chance that the Bluetooth 2.0 chipset will include a Stereo decoder chip, so even A2DP (Advanced Audio Distribution Profile) won't be needed.
The new standard for Bluetooth technology, Bluetooth 2.1+EDR, is now the most widely used standard, Bluetooth 2.0+EDR, which was introduced in 2004, and products supporting the Bluetooth 2.0+EDR standard appeared in large numbers in 2006. Although the Bluetooth 2.0+EDR standard has made significant technical improvements, the complexity of the configuration process and the high power consumption of the devices inherited from the 1.X standard remain.
In order to improve the current problems of Bluetooth technology, the Bluetooth SIG (Special Interest Group) launched the Bluetooth 2.1+EDR version of Bluetooth technology.
1. Improving the device pairing process: As many users encounter many problems when pairing hardware with Bluetooth, whether it is a single pairing, or a permanent pairing, the pairing process and the necessary operations are too cumbersome, and in the past, during the connectivity process, it was necessary to utilize the PIN code to ensure the security of the connection, while the improved connectivity automatically uses the numeric password to pair and connect. For example, if you choose to connect to a specific device in the phone's options, the phone will automatically list the available devices in the environment and connect them automatically.
And for short-range pairing, there is also the NFC (Near Field CoMMunication) mechanism that allows two Bluetooth-enabled cell phones to pair with each other and transmit communications. NFC is a short-range wireless RFID technology that replaces traditional radio transmissions with electromagnetic waves for short-range online applications of 1 to 2 meters. As the NFC mechanism controls the pairing of the initial detection, when the range of the two devices to be paired transmission, as long as a simple cell phone screen tap whether to accept the connection can be. However, to utilize NFC functionality, the system must have a built-in NFC chip or hardware capability.
2. Better power saving: Bluetooth version 2.1 adds Sniff Subrating, which saves power by setting up intervals between two devices that send a confirmation signal to each other. Generally speaking, when two connected Bluetooth devices enter standby mode, the Bluetooth devices still need to call each other to determine whether they are still online, of course, because of this, the Bluetooth chip must be kept in operation at all times, even if the other components of the cell phone have gone into hibernation mode. In order to improve the situation, Bluetooth 2.1 will be between the device to confirm each other's signal sending time interval from the old version of 0.1 seconds to extend to 0.5 seconds, so that the Bluetooth chip's workload is greatly reduced, but also allows the Bluetooth can have more time to completely dormant. According to the official report, after adopting this technology, the standby time of Bluetooth devices can be effectively extended by more than 5 times after the Bluetooth connection is enabled.
Future Versions of Bluetooth Technology
1) UWB Ultra Wideband (UWB) Version: The new version will be released in mid-2008. The new version of Bluetooth that integrates UWB technology will enable users to carry and transmit large amounts of data at the same speed and enable portable devices to realize more advanced video and audio applications. Under the Bluetooth specification, UWB technology can reach 480Mbps at an effective range of 10 meters, exceeding the maximum requirement of 200Mbps for many applications, such as the same-speed transmission of an MP3 player or a high-definition digital camera.
2) Wibree ultra-low-power version: In June of this year, developed by Nokia's extremely low-power wireless technology Wibree Wibree organization Wibree Forum, merged into the Bluetooth Technology Alliance. Bluetooth technology integration Wibree technical specifications of the new technical specifications will be released in the first half of 2008.
As long as your computer is equipped with a Bluetooth receiver, you can transfer from your cell phone to your computer, and likewise from your computer to your cell phone!