"Bluetooth" is synonymous with a low-power short-distance wireless connection technology standard. The word "Bluetooth" comes from the nickname "Bluetooth" of Harald II, a king who unified Denmark in the 10 century. The original supporters of Bluetooth technology are five world-famous computer and communication companies: Ericsson, IBM, Intel, Nokia and Toshiba. 1998 "Bluetooth Special Interest Group -SIG" was established in May, and adopted the strategy of transferring the patented technology to the industry for free, so as to realize its global standardization goal.
Its goal is to achieve the highest data transmission speed of 1Mbps (the effective transmission speed is 72 1kbps), and the maximum transmission distance is 10 meter. Users can use the 2.4GHz ISM (industrial, scientific and medical) band without permission, and set 79 channels with the bandwidth of 1MHz on it, switching 65,438 times per second. This is the origin and characteristics of Bluetooth technology. Devices that use Bluetooth technology to communicate can be divided into "calling party" and "receiving party", which determine the frequency hobbing mode. The calling party can communicate with seven recipients at the same time. Therefore, the calling party can connect to a subnet called piconet with 7 receivers and 8 devices. The receiver in a piconet can be the receiver of more than two piconets at the same time. 1July, 999, Bluetooth released the formal specification BluetoothVersion 1.0. Mobile phones and laptops that meet this specification will be available at the end of 1999 or the beginning of 2000. Companies that claim to commercialize Bluetooth technology are increasing day by day. At present, the number of member enterprises of Bluetooth standardization organization "BluetoothSIG" has increased to more than 800.
The original intention of Bluetooth technology is to use a small, low-cost wireless communication technology instead of cables to connect smart phones with notebook computers, palmtop computers and various digital information devices. Then form a personal network, so that all kinds of information-based mobile portable devices within its scope can share resources seamlessly. According to the prediction of foreign authoritative organizations, in a few years, hundreds of millions of digital mobile phones, PCs and various information devices around the world will use the wireless interface based on Bluetooth technology as the standard configuration. Bluetooth technology will develop rapidly in many fields, and its typical application environment includes wireless office, automobile industry, medical equipment and so on. Bluetooth will play an important role in people's daily life and work, with great market potential. This technology is becoming the investment hotspot in 2 1 century.
The so-called Bluetooth technology is actually a short-distance wireless communication technology. Bluetooth technology can effectively simplify the communication between mobile communication terminal devices such as palmtop computers, notebook computers and mobile phones, and can also successfully simplify the communication between these devices and the Internet, thus making the data transmission between these modern communication devices and the Internet faster and more efficient, and broadening the road for wireless communication. More generally speaking, Bluetooth technology enables modern portable mobile communication equipment and computer equipment to access the Internet without cables, and its practical application can be extended to various household appliances such as automobiles, consumer electronics and information appliances, forming a huge wireless communication network.