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You must have used Bluetoothwhether you connect headphones to your mobile phone or play music apps on wireless speakers.
Briefly, this technology is a short range communication method designed to change cables connecting portable or fixed devices, maintaining the best level of security.
So, the main features offered by Bluetooth include low power consumption and low cost. The Bluetooth specification defines a consistent framework for a wide variety of devices to communicate and interconnect.
But what is Bluetooth and how does the technology work? Continue reading to learn more in this article.
What is Bluetooth?
Bluetooth is an open wireless technology used to exchange data over short distances. with the help of radio transmission of short wavelengths from fixed and mobile devices, creating Personal Area Networks (PAN) with a high level of security.
The history of Bluetooth goes back to 1994, when Ericsson Mobile came up with the concept of using a wireless connection to connect items such as wireless headphones or earphones to other items such as mobile phones.
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The idea behind Bluetooth was developed as the possibilities of interconnection with a number of other peripheral devices such as computer printers, telephones and others were realized.
Using the development idea for Bluetooth technology, the ability to quickly and easily connect electronic devices became the goal.
18 facts about Bluetooth
1. Origin of the term
The word “Bluetooth” comes from the name of the 10th century Danish king Harald I, who united the Danish tribes into one kingdom. The implication is that Bluetooth does the same for communication protocols, binding them together into a universal standard.
The Bluetooth logo is a combination of extremely rare Viking inscriptions and King Harald’s initials.
3. Technology management
Bluetooth is governed by the Bluetooth Special Interest Group (SIG), a nonprofit trade association that oversees the development of Bluetooth standards and the licensing of Bluetooth technologies and trademarks to manufacturers. In fact, 15,000 companies fit into GIS in the telecommunications, computing, networking, and consumer electronics fields.
4. Use and implementation of Bluetooth
Bluetooth uses a radio technology called spread-spectrum frequency hopping, which divides the transmitted data and transmits parts of it in the frequency range of 2400 to 2483.5 MHz. Therefore, this band is a world-recognized industrial, scientific and medical short-range radio frequency band.
Bluetooth provides a secure way to connect and exchange information between devices such as fax machines, cell phones, telephones, notebook computers, personal computers, printers, global positioning system receivers, digital cameras, and video game consoles.
6. Communication and connection
The main Bluetooth device can communicate with up to seven devices, although not all devices support this limit.
Bluetooth exists in many products such as iPod Touch, Lego Mindstorms NXT, PlayStation 3, PSP Go, mobile phones, Nintendo Wii and some high definition headsets, modems, televisions and watches.
8. Data transfer
The technology is useful when transferring information between two or more devices that are close to each other in low-bandwidth situations. In fact, Bluetooth is usually used to transmit audio data to phones or byte data to laptops.
9. The Wi-Fi difference
Both Bluetooth and Wi-Fi are wireless technologies. However, Bluetooth is more efficient due to limited interference between connected devices.
Most people prefer wireless Bluetooth headphones because they are more convenient and of better quality. By the way, today’s wireless headphones have an excellent reputation for their sound quality and long battery life.
11. Use of data
Bluetooth does not use any data. When Bluetooth connects two devices, it forms something called a personal area network (PAN). So PAN does not require internet connection or mobile service to transfer files or anything else.
A 2003 research paper predicted that the Bluetooth user base would grow to over one billion in 2006. If we compare that in 2008 only 5% of mobile devices supported this technology, and now in this day and age when 95% of devices support Bluetooth, we really don’t need statistics to imagine the magnitude of the use of this feature.
Since 1994, more Bluetooth standards have been introduced, improving the capabilities of the technology and therefore making it better for consumers. You can view the Bluetooth timeline below:
- Bluetooth 1.0 (1999)
- 2.0-2.1 (2005)
- 3.0 (2009)
- 4.0-4.2 (2010)
- 5.0 and later (2016)
In 2021, Dr. Jaap Haartsen has been nominated for the European Inventors Award for his invaluable contribution to this world. In short, he invented Bluetooth technology and gave the whole world the concept of connecting various smart electronic devices using low-power radio frequencies.
15. Mirror spectrum
Bluetooth technology works within the industrial and scientific band from 2.4 to 2.485 GHz, using a spread spectrum signal, frequency hopping.
16. Limits battery consumption
Bluetooth devices do not consume battery. As a result, the specification targets the device’s power consumption, limiting battery consumption.
17. Voice channels
Bluetooth can also support data channels up to three simultaneous voice channels. Therefore, it is possible to transfer data while talking at the same time. Each individual voice channel will support 64 KB.
Finally, pairing devices such as headsets and phones is a way to register the device. That way, after pairing two devices, both retain the information they need to reconnect, so you only need to pair your devices once.
How does Bluetooth work?
Bluetooth connectivity requires both hardware and software components. So, in order to send and receive Bluetooth communication, the device must have a special microchip that contains an antenna. In addition, it must have complementary software that can process the signals.
When you connect two devices with this technology, they form a personal area network, also known as a PAN. Once the connection is established, the devices communicate automatically without the need for human intervention.
Bluetooth is used
Part of the popularity of this technology lies in its multiple uses. It can be used for:
- Wireless control and communication between mobile phones and hands-free headsets;
- Wireless control and communication between a mobile phone and a Bluetooth-compatible car stereo;
- Wireless networking between computers in a limited space where low bandwidth is required;
- Wireless communication with input and output devices of a personal computer, the most common being a mouse, keyboard and printer;
- Transfer files, contact information, calendar appointments and reminders between OBEX devices;
- Game consoles such as the Nintendo Wii and Sony PlayStation 3 and PSP Go use Bluetooth for their wireless controllers;
- Dial-up access to the Internet on personal computers or PDA devices using a mobile phone with data transfer capability such as a wireless modem;
- For low-bandwidth applications where higher USB bandwidth and cable-free connectivity are not required.
Is Bluetooth secure?
You may be wondering if Bluetooth radio waves are beneficial or harmful and if there is anything you should be concerned about. This question has always been a subject of misunderstanding among people.
by the way There are numerous studies on the concept of radiation, but there is no concrete evidence that cell phone radiation is harmful to health.
Eventually, because of all the rumors and myths about radiation, electronics manufacturers began to produce products with lower output power. Some experts agree that low output power helps reduce radiation and also provides better sound quality.
Sources: Flechatech, Techtudo, Buscapé
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