Bluetooth’s history began in the 1990s with the creation of a short-range wireless technology, by Ericsson. Although initially this technology was used to exchange data between mobile phones, it quickly became clear that there were many other uses for the technology. To promote Bluetooth, a group including Intel, Nokia and Toshiba created the Bluetooth Special Interest Group (SIG).
In 2000, the first Bluetooth-enabled smartphones were released commercially. The SIG started working on standards for this technology. Bluetooth has grown to be one of the most popular wireless technologies worldwide, with millions of devices using it. Bluetooth’s uses have expanded beyond its original purpose, with it now being used in everything from wireless headphones and medical devices.
How does Bluetooth function?
Bluetooth technology transmits data wirelessly over short distances using short-wavelength radio waves. It works in the 2.4GHz frequency band. Other devices, such as microwave ovens or Wi-Fi routers, can also use it.
A piconet is a network that connects two Bluetooth-enabled devices within range. The master device is the one that acts as the master and the slaves are the other devices. One master can communicate with seven slaves at once.
The frequency-hopping spread spectrum (FHSS) is a method that transmits data over the piconet. This reduces interference from other devices using the same frequency band.
Bluetooth-enabled devices consume very little power which extends their battery life. This is one advantage of Bluetooth over Wi-Fi.
What are the most common uses of Bluetooth?
Bluetooth technology can be found in many devices including smartphones, tablets, laptops and desktop computers. Bluetooth technology is also used in many other devices, such as wireless headphones and keyboards.
Hands-free calling in cars is one of the most common uses for Bluetooth. Bluetooth is a feature that many new cars have, which allows drivers the ability to make and take calls while driving.
Bluetooth can also be used in many medical devices such as hearing aids and blood pressure monitors. This allows patients to wirelessly transmit data to their caregivers or doctors.
Bluetooth – New innovations
Bluetooth has made many innovations in recent years. Bluetooth Low Energy (BLE) is one of the most important developments in Bluetooth. It is intended for devices that require very low power levels. BLE is already being used in many products and will continue to be used in the future with the Internet of Things (IoT).
Bluetooth is also developing new standards for audio quality with the aim of making it the most preferred technology for wireless audio streaming. The SIG is also exploring ways to make Bluetooth more efficient, with the long-term aim of making devices last for many years without a single battery.
Bluetooth is often used to connect wirelessly devices such as keyboards and headphones, but it can also be used for controlling smart devices in the home. Many Bluetooth smart locks can be opened with smartphones. Bluetooth can be used for creating a wireless mesh network to control devices such as lights and thermostats.
The Bluetooth SIG is always looking for ways to improve the technology and shows no sign of slowing down. Its impact on the world will only grow with more than two billion Bluetooth-enabled devices and new ones being added daily.