วันอังคารที่ 10 กุมภาพันธ์ พ.ศ. 2552

What is Bluetooth?

What is Bluetooth?

Bluetooth

is a technology of the radio interface (that is to work for Microchip Size 9 mm X 9 mm, which is used to connect the short-term radio and low-cost ) use of wireless communication at frequency 2.45GHz. It is make electronic movement can cantact and link in short distrance.

The source of the word Bluetooth.

Bluetooth comes from name of Scandinavia's king in the era of the 10 century name Harald Bluetooth. Which to gather kingdom with the peace. Therefore, Bluetooth is used as a name instead of the standard variety. Competing technologies in the world today together with a single device together with peace.

Useful of Bluetooth.

- Cable Replacement.
The first aim of bluetooth is to eliminate connect line.

- Ad Hoc Networking.
A radio technology used in data communications network that makes a difference from traditional methods. And can be linked with the network at any time you like.

- Data / Voice Access Point
Used to receiver data and sound from host.

The goal of bluetooth.

- Low cost implementation available for many people.

- Small implementation size to use easily.

- Low power consumption to be consecutive with no restrictions.

- Robust, high quality data & voice transfer Bluetooth to develop a tolerance to use and can send both voice and data efficiently.

- Open global standard is an open standard. That is anyone can continue to be developed. Technology has been development quickly (Bluetooth 2001).

Leader of bluetooth technology

Member of Bluetooth SIG (Special Interest Group) is a pioneer of this technology is collaboration of 5 companies such as Ericsson, IBM, Intel, Nokia and Toshiba. On 1 December 1999 later, group of five initiative announced 3Com, Lucent, Microsoft and Motorola to join member for established a new group is a promoter group until now the company has more than 1,300 companies signed on this technology already.

Devices to be recognized as Bluetooth technology. Must pass the test from SIG to confirm that it can work with other Bluetooth devices and the Internet.

The functionality of Bluetooth.

Brief explanation of Bluetooth is a technology of radio interface. Use of wireless links in frequency 2.45GHz make moving electronic device can communications wireless interoperability in the short distance. Each device can communicate with other devices up to a 7 simultaneously. We call this network of contacts that Piconet. Moreover each device can also belong to multiple networks Piconet network together, too.

Radio transmission technologies of Bluetooth will take a leap change frequency (Frequency hop) because this technology is suitable to be used to send radio waves that transmit low power and low prices. It is divided into several smaller frequency channels. During a channel change frequency uncertainties that can cause interference to avoid traffic to the intervention.

More data.

- Distance : Provide a stable connection speeds of 1 megabit per second at distance 10 meters or 33 feet.

- Protocal : Bluetooth v1.1 Compliant.

- Encryption : 60-64Bit and 104/128Bit Wep Encryption.

- System Requirements : PPC, Symbian Phone, Linux, Windows xxx.

- An USB form factor that is suitable for use on both desktop and notebook machines.

- Share files by drag-and-drop will enable the exchange of information and coolaboration more easy.

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