Bluetooth History
posted 1/24/22 by Sam Tverskoy
What is Bluetooth? Bluetooth technology allows devices to communicate with each other without cables or wires. Bluetooth relies on short-range radio frequency, and any device that incorporates the technology can communicate as long as it is within the required distance. Bluetooth is standardly found in millions of products we use every day – including headsets, smartphones, laptops and portable speakers.
Bluetooth uses a radio technology called frequency-hopping spread spectrum. Bluetooth divides transmitted data into packets, and transmits each packet on one of 79 designated Bluetooth channels. Each channel has a bandwidth of 1 MHz. MHz is used to measure the transmission speed of electronic devices, including channels, buses and the computer's internal clock. To provide context, WiFi channels each use 20 MHz.
The idea of Bluetooth started in 1994 with Jaap Haartsen, who issued the patent for Bluetooth and laid the foundations for the system, enabling connections between a seemingly endless array of devices. The popularity of Bluetooth increased when the first mobile phone with Bluetooth capacity appeared on the market in 2000. The technology became much more widespread by 2004, most likely because the version released that year made it easier for people to use the technology in their day-to-day activities.
The technology behind Bluetooth has evolved significantly over the last 20 years and can now be found in almost all of our electronics. For some, it has become an essential part of everyday life as we connect our smartphones to speakers and our smartwatches to headphones and computers.
Source: https://www.elprocus.com/how-does-bluetooth-work/