Basics of Bluetooth
I used to manage a wireless communications shop in Las Vegas NV and at that time I had the first Bluetooth phone made by newly formed Sony Ericsson, the T-68. One of the cool features besides the now old attachable camera was the capability of Bluetooth. Now at the time there were not many Bluetooth devices to discover and connect to so my co-workers and I would transfer images, games and ringtones via the bluetooth to each others cell phones. Bluetooth operates in the 2.45 Gigahertz frequency and can transfer up to 3 Mbps of data.
Technology Behind Bluetooth
Bluetooth connects to other devices by the means of searching and discovering. Once connected Bluetooth keeps in tune with that single device without interference from other devices using Bluetooth. We call this spread-spectrum frequency hopping. Essentially what this means is that when Blutooth devices are connected they skip 79 frequencies randomly selected within the given range about 1600 hops a second all the while maintaining the same frequency with the paired devices so this reduces the chance for interference from other Bluetooth enabled devices.
Impressions of Bluetooth
What is really cool about Bluetooth is that you can pair up to 8 devices with a single device, that is called a (PAN) Personal Area Network or Piconet, so lets say your car or your home phone and computer can instantly connect when you come into range which is about 10 meters. That is the short breakdown of Bluetooth and it is becoming more readily available in every day electronics. One last fact is that Bluetooth has a low level frequency so it does not use much power and can go through walls with no line of sight needed.
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Informative post, but it would be much better if you can break it into several paragraphs and give each paragraph suitable headers, aye?
Cheers!