Bluetooth
Bluetooth is a wireless standard developed to allow electronic equipment to make its own connections without action from a user. Bluetooth is intended to be a standard that works at two levels. * It provides agreement at the physical level. Bluetooth is a radio frequency standard. * It also provides agreement on when bits are sent, how many will be sent at a time, a redundancy check. The companies belonging to the Bluetooth SIG (Special Interest Group) aim for Bluetooth's radio communications take the place of wires for connecting periphe
Baby monitors, garage-door openers and the newest generation of cordless phones all make use of frequencies in the ISM band. 45 gigahertz, which has been set aside by international agreement for the use of industrial, scientific and medical devices (ISM). It requires two pieces of hardware for the point-to-point network: a Bluetooth base unit that plugs into the bottom of the phone and the headset. Bluetooth uses fast acknowledgement and frequency-hopping operation to make the link stable and without interference. Making sure that Bluetooth and these other devices do not interfere with one another is a crucial part of the design. Bluetooth communicates on a frequency of 2. The manufacturing market for Bluetooth will focus on the sale of embedded chips for various products, predicting a $700 million market by 2006. The hardware vendors have developed a specification for a very small radio module to be built into computer, telephone and entertainment equipment. A number of devices take advantage of this same radio-frequency band. There are four important features to Bluetooth.
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