There are diferent ways to connect electronic devices to each other, by cable, radio signals and infrared rays of light, and a even greater variety of connectors, plugs and protocols, reason why the art to connect things is every more complex day to day, that is the reason of the wireless technology (wireless). The Bluetooth technology is automatic and wireless, and has a number of interesting characteristics that can simplify our daily life.

¿What is Bluetooth®?

It is the norm that defines a global standard of wireless communication, that makes possible the transmission of voice and data between different equipment through a connection by radio frequency. The main objectives that are tried to obtain with this norm are:
- Ensure communications between mobile and static devices.
- To eliminate cables and connectors between these.
- To offer the possibility of creating small radio networks and helping the synchronization of data between our personal equipment.

With this, Bluetooth® is mainly used in a great number of products such as telephones, printers, modems and earpieces. Its use is adecuate when it can be two or more devices in an a reduced area without great needs of bandwidth. Its more common use is integrated on telephones and PDA's, specially for earpieces or in file transfer. In addition its advantage is to simplify discovery and configuration of devices, since these can indicate to others the services that offer, which results in the accessibility of the same without an explicit control of directions of network, permissions and other typical aspects of traditional networks.

The Bluetooth® technology includes hardware, software and requirements of inter-operability, reason why for its development it has been necessary the participation of the main manufacturers of the sectors of the telecommunications and computer science, such as: Ericsson, Nokia, Toshiba, IBM, Intel and others. Later other companies have been incorporated to this technology, and it is anticipated that next they also make companies of sectors so varied as: industrial automatization, machinery, leisure and entertainment, manufacturers of toys, electric home appliances, etc., and so in just a short time you will see a total connectivity of our devices and equipments as much in house as in the work.

Facts.

ya que tenia como principal virtud el que se basaba en un chip de radio relativamente económico.In 1994 Ericsson initiated a study to investigate the viability of an interphase via radio, of low cost and low electrical consumption, for the interconnection between mobile telephones and other accessories with the intention to eliminate cables between devices. The study started from a long project that it investigated on multi-signallers connected to a cellular network, finally it ended with a radio link of short-range, call MC Link. In agreement with this the project advanced, it were clear that this one type of connection could widely be used in a great number of applications, specially because its main virtue was: it is based on a relatively economic chip of radio.

The Bluetooth® SIG.

In 1998, Ericsson, IBM, Intel, Toshiba and Nokia formed a partnership and adopted Bluetooth like name for their specification. In December of 1999, 3com, Lucent, Microsoft and Motorola were signed in to this group like promoters of Bluetooth SIG (Special Interest Group). Bluetooth SIG is a private association without spirit of profit with central offices in Bellevue, Washington. To date of September of 2007, the SIG is formed by more than 9.000 companies leaders in telecommunications, computer science, motoring, music, textile, industrial automatization and network technologies. They have small groups of personnel dedicated to the group in Hong Kong, Sweden and the United States. The members of the SIG direct the development of the wireless Bluetooth technology, besides implementing and commercializing the technology in their products. Bluetooth SIG by itself does not make nor sells Bluetooth devices.

Origin of the name and logo.

The name comes from a Danish and Norwegian king Harald Blåtand whose translation to the English would be Harold Bluetooth (Blue Tooth, although in Danish language means “of dark complexion”) known by good signaller and to unify the Norwegians, Swedish and Danish tribes. In the same way, Bluetooth® tries to unite different technologies like those from the computers, the mobile telephones and the rest of peripheral.
The symbol of Bluetooth® is the union of runas Nordic analogous to letters B and H: . (Hagall) y (Berkanan).

 

¿What I can do with products with Bluetooth® technology?

The possibilities are almost unlimited, but next we enumerated some of the present possibilities:
- Elimination of the necessity of connections by cable between electronic products and accessories.
- Interchange of files, visit cards, appointments schedule, etc. between users of Bluetooth.
- Synchronization and transference of files between devices.
- Connection to determined contents in public areas.
- As remote controls work like electronic key, entrances and electronic money.

¿In what product classes I can hope to find the Bluetooth® technology ?

The wireless Bluetooth® technology is unique in its amplitude of uses. The connections can be established simultaneously between product groups or individual products with Internet. This flexibility, apart from which the products with Bluetooth® technology must be described and to pass tests of interoperability through the Bluetooth Special Interest Group before their launching, has done that an ample range of market segments has supported this technology, including technicians of software, silicon salesmen, peripheral manufacturers and photographic cameras, manufacturers of mobile PCs, manufacturers of cars, and manufacturers of measure and test equipment.

¿Which are the differences between Wi-Fi and the Bluetooth® radio technology?

The wireless technologies Bluetooth® and Wi-Fi are complementary technologies. The Bluetooth® technology is designed to replace cables between the mobile telephones, laptops, and other computer devices and of communication within a radius of 10 meters.
A typical router with Wi-Fi it can have a radius of reach of 45 mts in interiors and 90 mts outside. One hopes that both technologies coexist: that the Bluetooth® technology is used like a replacement of the cable for movable devices such as PDAs, telephones, cameras, loudspeakers, earpieces etc. and that the Wi-Fi technology is used for wireless the Ethernet access of high speed.

 

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