A brief introduction to on-board projection and on-board wireless projection solutions. The

car projection and Bluetooth are not a system, that is to say, the projection function does not rely on Bluetooth. Bluetooth module has low power consumption and small data transmission bandwidth, so the data transmission speed is relatively slow and the transmission time of files is longer. However, for vehicle Bluetooth phone and Bluetooth music, the transmission rate of Bluetooth can meet the needs of real-time data transmission. Therefore, vehicle navigation generally has Bluetooth function and only supports voice call and Bluetooth music. If you want to cast the screen, the transmission rate of Bluetooth cannot be met.


, because the screen projection is to put the content of the mobile phone screen on the vehicle screen for display, and the content of the mobile phone screen is constantly changing, especially when playing video and navigation, the screen information is changing in real time. Take the video with an ordinary frame rate of 24. Bluetooth must send 24 screenshots of the mobile phone screen to the vehicle within one second to realize synchronous screen display, The transmission rate of Bluetooth can not meet this demand at all, so the Bluetooth on the car can only support Bluetooth music and Bluetooth calls. Later, there are two methods to realize the direct connection of mobile phone projection screen, one is to use mobile phone projection screen, and the other is to use mobile phone projection screen software.


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are realized by means of data line. The data line is a physical connection, and the data transmission capacity is the strongest, which theoretically meets the demand of mobile phone projection to vehicle screen. Then establish a connection between the mobile phone and the vehicle navigation system through the data line to obtain the display content and transmit the display in real time. This connection is the most stable, but it needs to use a data cable, which is not so convenient to use. Using the projection software, if you want to display the mobile phone navigation picture or other film and television pictures on the vehicle screen, you should use the projection software or the special same screen software. Now there happens to be a very easy-to-use screen projection software that can realize screen projection.


, Bijie projection screen can meet any vehicle projection project, such as ordinary video projection screen, music projection screen, navigation projection screen and so on. Bijie projection screen can be displayed on your vehicle screen. Before casting music, you need to read the manual to study how to connect mobile music to the car; Navigation requires the mobile phone to be fixed on the vehicle, and there is little content on the vehicle screen; Using the Bijie projection screen and opening the mobile phone, you can share the high-quality content of the mobile phone with the vehicle, and connect the massive content of the mobile phone with one click. For example, in the case of long-distance driving, navigation is required. In the past, either navigator or mobile phone was used to connect with USB when listening to music. The emergence of Bijie projection screen can make your mobile phone your car entertainment system. All entertainment apps on the mobile phone can be projected on the car screen, so you will no longer feel bored due to the boring operation and lack of content. Different vehicle models, different passengers, different vehicle positioning and different screen projection requirements on the vehicle appear to be inconsistent, but Bijie screen projection sets the customized renewal of screen projection according to the vehicle models and seating positions to meet different needs.