Bluetooth

Bluetooth is a wireless technology that is used to transfer information between devices. Bluetooth can transfer information from one device to another. It was named after a tenth century king by the name of Harald Blaatand, king of Denmark and Norway (1). It uses radio technology. It is called frequency-hopping spread spectrum. It chops data being sent to other devices and transmits up to 79 frequencies. Bluetooth can transmit data at a rate of 1 Mb/s. It provides connections and exchanges information between devices such as mobile phones, telephones, laptops, printers, GPS, etc. through a short range radio frequency bandwidth. One of the most popular uses of Bluetooth is with cell phones.

Bluetooth is licensed by the Bluetooth Special Interest Group and known as SIG. The SIG consist of companies in various technology areas such as computing, networking and consumer electronics. Bluetooth devices can only communicate when they are within range of each other. They do not have to be in the line of sight. because they use radio communication systems. Bluetooth can transmit between the walls in your house. Bluetooth can connect up to eight devices at a time. You might think that these devices would interfere with one another but it is unlikely because it changes frequencies on a regular basis. There are a number of common household devices that use the same frequency as Bluetooth. Some of them are baby monitors, garage door openers and new cordless phones. All of these use frequencies in the ISN band.

When Bluetooth-capable devices come within range of each other, an electronic conversation takes place between them. They determine whether they have any data to share or whether one needs to control the other. The devices form a network (PAN), or Pico net, that may fill a room or may cover no more distance than that between the cell phone on a belt-clip and the head set on your head.

Some people worry about the danger of radiation when using Bluetooth. Research shows that dangers are very low. Except when you are using the Bluetooth headset for a conversation it is idle most of the time to preserve the battery. This reduces the health risk.

The charge of a Bluetooth headset now lasts about as long as that of the phone. Some Bluetooth headsets can be charged by a special USB plugged into a laptop. Some can be charged using the regular phone charger.

The cost of Bluetooth is relatively inexpensive. It uses low-cost transceiver microchips so the cost to manufacture Bluetooth is very low. Chips estimated to cost around $4.00 to manufacture. The radio spectrum that Bluetooth uses is free. The only cost that the consumer has is the cost of the Bluetooth activated device such as a cell phone, etc. Of course there will be a monthly bill associated with your cell phone but there are no extra charges solely for the use of the Bluetooth. [] [] [] an=top%20news%20index_technology []