What is Bluetooth
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Experts answer: What is Bluetooth Bluetooth is a wireless data and voice communications with open standards, to close Wuxian connection is the basis for fixed and mobile communications Huan Jing to create a special connection, the effective transmission distance is 33 feet (10 m ). Features Bluetooth technology Bluetooth technology is aKinds of wireless data and voice communication open standards, it is close to low-cost wireless connectivity as the basis for fixed and mobile communications environment to establish a special connection. If the Bluetooth technology into mobile phones and portable computers, you can remove the mobile phone and portable computer link between the offensiveCables to establish communications through wireless. Printers, PDI, desktop computers, fax machines, keyboards, joysticks, and all other digital devices can become a "Bluetooth" technology part of the system. In addition, Bluetooth wireless technology also has the digital network and provide a common interface to peripheralsFormation of a special person away from the fixed network connection device group. Bluetooth technology in the global generic 2.4GHZISM (industrial, scientific, medical) band, Bluetooth data rate 1Mb * s. In theory, in order to 2.4GHZISM band technology can run 30m apart in order toInterconnected within the device, transfer rate up to 2Mb * s, but in reality difficult to achieve. Bluetooth plonkandplay applied the concept is somewhat similar to "plug and play" concept, once the search for any Bluetooth device to another Bluetooth device, immediately contact can be establishedWithout any of the settings user, can be interpreted as "that even the use." This environment is very noisy radio environment, it is even more obvious advantages. Another big advantage of Bluetooth technology is its application of the globally harmonized frequency setting, which eliminates the "border" barriers, but in the leading cellular mobile phoneDomain, this obstacle has plagued users for years. In addition, ISM band is open to all band radio systems, so use one of these bands will encounter unpredictable sources of interference. For example, some household appliances, cordless phones, garage door openers, microwave ovens, etc., are likely to be interference. To this end, the Bluetooth technologyTechnique specifically designed to quickly identify and frequency hopping scheme to ensure that the link stability. Band frequency hopping is to be divided into a number of frequency hopping channels (hopchannel), in a connection, a radio transceiver according to a certain code sequence constantly jump from one channel to another channel, only the sending and receiving sides is based on the rulesLaw to communicate, while others can not interfere with the pattern of interference by the same; FH instantaneous bandwidth is narrow, but through the spread spectrum technology make this expansion into a narrow band or wideband exponentially, so that interference effects may become very small. Work with other systems compared to the same frequency band, Bluetooth frequency hopping fasterShorter packets, which makes Bluetooth more stable than other systems.
Experts answer: What is Bluetooth Bluetooth is a wireless data and voice communications with open standards, to close Wuxian connection is the basis for fixed and mobile communications Huan Jing to create a special connection, the effective transmission distance is 33 feet (10 m ). Features Bluetooth technology Bluetooth technology is aKinds of wireless data and voice communication open standards, it is close to low-cost wireless connectivity as the basis for fixed and mobile communications environment to establish a special connection. If the Bluetooth technology into mobile phones and portable computers, you can remove the mobile phone and portable computer link between the offensiveCables to establish communications through wireless. Printers, PDI, desktop computers, fax machines, keyboards, joysticks, and all other digital devices can become a "Bluetooth" technology part of the system. In addition, Bluetooth wireless technology also has the digital network and provide a common interface to peripheralsFormation of a special person away from the fixed network connection device group. Bluetooth technology in the global generic 2.4GHZISM (industrial, scientific, medical) band, Bluetooth data rate 1Mb * s. In theory, in order to 2.4GHZISM band technology can run 30m apart in order toInterconnected within the device, transfer rate up to 2Mb * s, but in reality difficult to achieve. Bluetooth plonkandplay applied the concept is somewhat similar to "plug and play" concept, once the search for any Bluetooth device to another Bluetooth device, immediately contact can be establishedWithout any of the settings user, can be interpreted as "that even the use." This environment is very noisy radio environment, it is even more obvious advantages. Another big advantage of Bluetooth technology is its application of the globally harmonized frequency setting, which eliminates the "border" barriers, but in the leading cellular mobile phoneDomain, this obstacle has plagued users for years. In addition, ISM band is open to all band radio systems, so use one of these bands will encounter unpredictable sources of interference. For example, some household appliances, cordless phones, garage door openers, microwave ovens, etc., are likely to be interference. To this end, the Bluetooth technologyTechnique specifically designed to quickly identify and frequency hopping scheme to ensure that the link stability. Band frequency hopping is to be divided into a number of frequency hopping channels (hopchannel), in a connection, a radio transceiver according to a certain code sequence constantly jump from one channel to another channel, only the sending and receiving sides is based on the rulesLaw to communicate, while others can not interfere with the pattern of interference by the same; FH instantaneous bandwidth is narrow, but through the spread spectrum technology make this expansion into a narrow band or wideband exponentially, so that interference effects may become very small. Work with other systems compared to the same frequency band, Bluetooth frequency hopping fasterShorter packets, which makes Bluetooth more stable than other systems.
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