What is Bluetooth transmission? What is the principle of Bluetooth transmission

The so-called Bluetooth (Bluetooth) technology, in fact, is a short-distance wireless communication technology, the use of "Bluetooth" technology, can effectively simplify the communication between mobile communication terminal devices such as handheld computers, laptops and mobile phones, and can also successfully simplify the communication between these devices and the Internet, so that the data transmission between these modern communication equipment and the Internet becomes more rapid and efficient, and broadens the road for wireless communication. To put it in layman's terms, Bluetooth technology makes some modern easy-to-carry mobile communication equipment and computer equipment to be networked without the help of cables, and can realize wireless Internet, and its practical application range can also be extended to various household appliances, consumer electronics and automobiles and other information appliances, forming a huge wireless communication network.

The background of the formation of "Bluetooth" is as follows: in May 1998, Ericsson, Nokia, Toshiba, IBM and Intel Corporation, five well-known manufacturers, jointly carried out the standardization of short-range wireless communication technology proposed Bluetooth technology, the purpose of which is to provide a short-range, low-cost wireless transmission application technology. The five vendors have also formed a Bluetooth Special Interest Group to enable Bluetooth technology to become the wireless communication standard of the future.

Chip overlord Intel is responsible for the development of semiconductor chips and transmission software, Ericsson is responsible for the development of wireless RF and mobile** software, and IBM and Toshiba are responsible for the development of notebook interface specifications. In the second half of 1999, the famous industry giants Microsoft, Motorola, Sankang, Lucent and five companies of the Bluetooth special group jointly initiated the establishment of the Bluetooth technology promotion organization, thus setting off a "Bluetooth" boom around the world. The global industry is about to develop a large number of Bluetooth technology application products, so that Bluetooth technology presents an extremely broad market prospect, and indicates that the beginning of the 21st century will usher in a magnificent wave of global wireless communication.

A standard for short-range wireless transmission.

Bluetooth uses frequency hopping technology to split the transmitted data into packets, which are transmitted separately through 79 designated Bluetooth channels.

Each channel has a bandwidth of 1 MHz. Bluetooth uses a 2 MHz pitch and can accommodate 40 channels. The first channel starts at 2402 MHz, one channel every 1 MHz, up to 2480 MHz.

With Adaptive Frequency-Hopping (AFH), it typically jumps 1,600 times per second.

Bluetooth makes it possible to use 4-DQPSK and 8DPSK modulation in compatible devices. Equipment running GFSK is said to be able to operate at the Basic Rate (BR), with instantaneous rates of up to 1Mbit s.

The term Enhanced Data Rate (EDR) is used to describe 4-DPSK and 8DPSK schemes, up to 2 and 3 Mbits, respectively.

In Bluetooth radio technology, the combination of the two modes (BR and EDR) is collectively referred to as "BR EDR RF".

1.Confirm that the device supports Bluetooth transmission.

First of all, before the Bluetooth transmission, we need to confirm whether the device supports Bluetooth transmission. Most mobile phones, tablets, computers, and other devices support Bluetooth transmission, but some older devices may not support it. After confirming that the device supports Bluetooth transmission, we can start the Bluetooth transmission.

2.Turn on the Bluetooth function.

Turn on your device's Bluetooth function. Usually, the way to turn on the Bluetooth function is to find the Bluetooth option in the device's settings and turn on the Bluetooth switch. The settings may vary slightly from device to device, but they are pretty much the same.

3.Connect the device.

Before we can do the file transfer, we need to connect the two devices first. Search for nearby connectable devices in the Bluetooth settings, select the Tanfeng device you want to transfer files to connect, and wait for the connection to be successful.

4.Select the file and transfer it.

Once the connection is successful, we can start transferring the files. Open the folder where the files you want to transfer are located, select the files you want to transfer, then right-click and select the "Send to via Bluetooth" option. Select the connected device in the pop-up window and wait for the transfer to complete.

5.Problems that may be encountered and how to fix them.

Sometimes, there may be problems with Bluetooth transmission. For example, connection failure, slow transmission speed, etc. At this point, we can try the following solutions:

1.Confirm whether the Bluetooth version of the device is consistent, if not, there may be a connection question.

2.Check whether the Bluetooth device driver of the device is normal.

3.Try to reconnect the device, sometimes there may be problems with the connection, reconnecting may solve the problem.

4.If the transfer speed is too slow, you can try to compress the files to be transferred and then transfer them, which can increase the transfer speed.

6.Precautions.

There are a few things you need to pay attention to when making Bluetooth transmissions:

1.Bluetooth transfer speeds are relatively slow, and large file transfers can take a long time, and it can also wear down the device's battery.

2.When turning off Bluetooth on your device, be sure to disconnect it from other devices to avoid causing interference to other devices.

3.When transferring large files, you need to pay attention to whether the storage space of your device is sufficient.

4.Avoid transferring malicious or virus files via Bluetooth to avoid damage to your device.

7.Conclusion.

Transferring files via Bluetooth is a simple and convenient way to transfer files, but you need to pay attention to device support, connection, transfer speed, precautions, etc., to ensure a smooth transfer. At the same time, it is also necessary to avoid transferring malicious or virus files via Bluetooth to ensure the security of the device.

Everyone knows that mobile phones have Bluetooth function, but do you know how to use Bluetooth to quickly transfer files? In fact, the method is very simple, turn on Bluetooth and pair it with the device you need to transfer files, and then you can transfer files. The following will give you a detailed description of the specific operation steps.

Procedure. First of all, you need to turn on the Bluetooth function, and the first way is to open it directly in the shortcut, that is, in the drop-down list of your phone.

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The second way is to turn on Bluetooth in your phone's settings.

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Enter the Bluetooth interface, it will automatically detect the available devices around it, and of course, the Bluetooth of the mobile phone that accepts the file must also be turned on.

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If you can't detect it, you can also click the button in the upper right corner to refresh it.

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After detecting the other person's phone, tap the device name to start pairing.

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After the pairing is successful, click the name of the other device to connect.

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Find the file you want to transfer, and press and hold to select Bluetooth in the pop-up options.

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Once you are in the Bluetooth interface, tap on the phone that you have paired.

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The other person's phone will receive a reminder to accept the right-click, click OK.

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After turning on Bluetooth and matching it with the other party's mobile phone, open [File Management], select the file you want to send, click [Send], select [Bluetooth], and select the device you want to transfer.

I don't know what files you want to transfer, you can transfer normal files, but you can't transfer folders.

1. Introduction: Bluetooth technology, in fact, is a short-distance wireless communication technology, the use of "Bluetooth" technology, can effectively simplify the communication between mobile communication terminal devices such as handheld computers, laptops and mobile phones, and can also successfully simplify the communication between these devices and the Internet, so that the data transmission between these modern communication equipment and the Internet becomes more rapid and efficient, and broadens the road for wireless communication.

2. Master-slave relationship: Bluetooth technology stipulates that when Bluetooth communication is carried out between each pair of devices, one must be the main role and the other is the slave role in order to communicate.

3. Call process: When the Bluetooth master device initiates a call, the first thing is to find out the surrounding Bluetooth devices that can be found. After the master device finds the slave Bluetooth device, it pairs it with the slave Bluetooth device.

4. Data transmission: In the application of Bluetooth data transmission, the pairing information between the two Bluetooth devices is set up in advance before the Bluetooth device leaves the factory, and the PIN code and address of the slave device are pre-stored at the main end.

1. First of all, turn on the Bluetooth on the two mobile phones, open the mobile phone settings, enter the page, and click the device connection.

2. Select Bluetooth to enter, turn on the Bluetooth button, and then need to transfer on the phone.

3. Open the browser, click on the file option below to enter, and select the installation package.

4. Find the installation package you want to transfer and press and hold it, and the send page will pop up.

5. Tap Bluetooth, find the name of another device among the available devices and tap it to select pairing.

6. When you are done, on the receiving phone, click Accept.

The role of Bluetooth.

Bluetooth enables the wireless exchange of information between a wide range of devices, including mobile**, PDAs, wireless headsets, laptops, related peripherals, and more. The use of "Bluetooth" technology can effectively simplify the communication between mobile communication terminal equipment, and can also successfully simplify the communication between the device and the Internet, so that the data transmission becomes more rapid and efficient, and broadens the road for wireless communication.

Bluetooth is a radio technology that enables devices to communicate over short distances (typically within 10 meters) and enables wireless information exchange between a wide range of devices, including mobile**, PDAs, wireless headsets, laptops, and related peripherals. The use of "Bluetooth" technology, can effectively simplify the communication between mobile communication terminal equipment, can also successfully simplify the communication between the device and the Internet, so that the data transmission becomes more rapid and efficient, and broadens the road for wireless communication. <>

2. After the Bluetooth pairing is successful, open the folder of the phone, find the song you want to transfer, then press and hold and click "Send" to select "Bluetooth" and click on the other party's brother Bluetooth device, and the other party can click "Receive" to transmit.

It should be noted that for Apple mobile phones, Bluetooth transmission cannot be carried out with mobile phones of other brands of Shenchen chain, and for Android mobile phones, in addition to data transmission with Kuansun Apple mobile phones, Bluetooth transmission can be carried out with mobile phones of other brands.

Explanation of terms: Bluetooth is a wireless technology standard that enables short-range data exchange between fixed devices, mobile devices, and building personal area networks. Bluetooth technology was first created in 1994 by telecommunications giant Ericsson as an alternative to the RS232 data cable.

Bluetooth can connect multiple devices, overcoming the challenge of data synchronization.