How Bluetooth works

With the help of bluetooth, you can exchange information between electronic multimedia devices: computers, mobile phones, etc. Bluetooth allows them to communicate in an inexpensive, universally accessible frequency of 2.45 GHz. The established connection is reliable if the gadgets are removed to a distance of up to 100 m.

Bluetooth - Wireless Radio Technology. It has been developed for combining various digital devices. Bluetooth 4.0 is characterized by energy saving, compatible with previous ones. Such technology allows you to increase the operation time of the device after complete charge from the battery more than five times. In addition, the rate of data exchange and the sustainability of the connection increased. The latest version 4.1 has a number of improvements regarding communication with mobile devices.

The bluetooth technology uses a small radius transmitters. There are two types: built-in directly into the device, external - connected via a PC card or USB port. It differs from IRDA (infrared port) with a large radius of action, high speed of information transfer. For bluetooth, there is no need for the direct visibility of the receiver. High-speed IRDA devices were not widespread. They were crowded with modern - Bluetooth, WiFi.

Cables are not required for connecting bluetooth devices and transferring multimedia information. Both devices must have a built-in bluetooth adapter. When it is activated, each device starts searching for another, which is in the permissible radius of the signal. Currently, the radius has increased from 10 m to 100 m (in the apartment 30-40 m). This is connected with the appearance of a large number of peripheral bluetooth devices operating without bulky, uncomfortable wires: keyboards, mice, headphones, modems.

Bluetooth frequency range - 2.45 GHz is universally accessible to everyone. The Federal Communications Commission limits the range used by devices. The problem is that they have become extremely many: bluetooth, wireless networks, microwave ovens. Audio and video equipment operating in the HOME RF range is even more common. Increasing the HOME RF range will entail a conflict between them.

At the frequency of 2.45 GHz, the alarm systems, protection, radio communications are operating - they also create interference. To solve this problem, bluetooth uses fast jumping frequency rearrangement. This restructuring makes it possible to quickly transfer the data compared to other operating at the same frequency. Weakening interference makes the Bluetooth connection most stable and strong.

Each user who wants to make the benefits of wireless technology must make sure that the Bluetooth microchip is in the device, otherwise it must be bought and install it. On the computer adapter connects to the USB port. The system itself will automatically determine the new device within reach. It is usually not required to install drivers. If the operating system specifies the adapter as an unknown device, then the driver is installed from the disk attached.

After the driver is completed, you need to activate bluetooth to start searching for other devices. The adapter must be active on both devices. With a positive result of scanning, a list of available devices is displayed. Find the desired, pair and start the data transmission.

The correct installation and configuration of Bluetooth allows you to continue without thinking to use it. The computer will automatically detect all bluetooth devices in its action radius, without user intervention. Read about it in the article " How to turn on bluetooth windows 8».