Infrared remote control: infrared is used to control electrical equipment through invisible light such as infrared. By turning infrared rays into digital signals that electrical equipment can recognize, the remote control can remotely control electrical equipment at a long distance. However, due to the limitation of infrared, the infrared remote control cannot pass through obstacles for remote control or remotely control the device from a large angle.
Infrared remote control can be said to be the most commonly used type of remote control in our family. This type of remote control has low manufacturing cost, high stability, and does not require additional settings. In addition, our infrared remote control is malfunctioning, and it is easy to find a replaceable remote control. However, it is also because the infrared signal is not encrypted. If multiple devices of the same type are placed in an environment, it is easy to use the same remote control to control multiple devices at the same time, which sometimes brings inconvenience to our operation.
Bluetooth remote control: For Bluetooth, we will think of its products as Bluetooth headsets, mobile phones, computers, and the mouse and keyboard parts for computers also have Bluetooth transmission, but it is relatively rare to use in household appliances.
The advantage of the Bluetooth remote control is to achieve a completely independent signal transmission channel through pairing with the TV, thereby avoiding interference between wireless signals of different devices. And because the Bluetooth signal transmission is very encrypted, we don’t have to worry about the transmitted signal being acquired by others. As a supplement to 2.4GHz technology, Bluetooth remote control is also a development trend.
For now, the Bluetooth remote control also has some problems. For example, it is necessary to manually pair the remote control with the device when using it for the first time, the operation delay of the device is high, and the cost is high. These are the problems that Bluetooth needs to solve.
Wireless 2.4g remote control: Wireless 2.4g remote control is gradually becoming popular among TV remote controls. This remote control signal transmission method successfully solves the shortcomings of infrared remote control, and can remotely control the TV from all angles in the house. Including the current mainstream wireless mouse, wireless keyboard, wireless gamepad, etc. are all using this type of remote control.
Compared with the traditional infrared remote control, the wireless 2.4g remote control gets rid of the problem of directivity. We can use the remote control to operate the device at any position and at any angle in the house without worrying about the problem that the device cannot receive the signal. This is definitely a boon for a remote control with air mouse operation. In addition, the 2.4GHz signal transmission bandwidth is larger, which allows the remote control to perform more complex operations, such as voice and somatosensory operations, which makes the remote control experience even better.
However, the wireless 2.4g remote control is not perfect. Because the WiFi signal we use is also in the 2.4GHz frequency band, when there are many devices, 2.4GHz devices sometimes interfere with WiFi, thereby reducing the remote control operation. Accuracy. However, this situation will only appear in very extreme environments, and the average user does not need to worry too much.
Post time: Jun-05-2021