Car screen mirroring and Bluetooth are not the same system, which means that the screen mirroring function is not achieved through Bluetooth.
The Bluetooth module has low power consumption and small data transmission bandwidth, so the data transmission speed is relatively slow and the file transmission time is longer. However, for car Bluetooth phones and Bluetooth music, the transmission rate of Bluetooth can already meet the real-time data transmission needs. Therefore, car navigation generally has Bluetooth function and only supports voice calls and Bluetooth music. If you want to cast the screen, the transmission speed of Bluetooth cannot be met.
Because screen mirroring is the process of projecting the content of a mobile phone screen onto a car screen for display, and the content of the mobile phone screen is constantly changing, especially when playing videos and navigating, the screen information is constantly changing in real time. Taking a video with a normal frame rate of 24 frames per second as an example, Bluetooth must send 24 screenshots of the mobile phone screen to the car machine within one second to achieve synchronized image display. However, the transmission rate of Bluetooth cannot meet this requirement, so the Bluetooth on the car machine can only support Bluetooth music and Bluetooth calls.
There are two main methods for implementing mobile phone screen mirroring in car infotainment systems: one is to use screen mirroring software, and the other is to directly connect the data cable and then project the phone onto the car screen.
Using data cables to achieve
The data cable is a physical connection with the strongest data transmission capability, which theoretically meets the need for mobile phones to project onto car screens. Then establish a connection through a data cable between the mobile phone and the car navigation system to obtain display content and transmit it in real-time. This type of connection is the most stable, but it requires the use of a data cable, which is not very convenient to use.
Using screen casting software
If you want to display the mobile navigation screen or other video images on the car screen, you need to use screen mirroring or dedicated screen sharing software. And now there happens to be a very useful screen casting software that can achieve screen casting.
Bijie screen casting can meet any of your car screen casting projects, such as regular video screen casting, music screen casting, navigation screen casting, etc., which can be displayed on your car screen using Bijie screen casting. Previously, when playing music, one needed to read the manual and study how to connect mobile music to the car; Navigation requires the phone to be fixed on the car, and the content on the car screen is also minimal; By using Bijie screen mirroring, you can open your phone and share high-quality content with the car, connecting to a massive amount of content with just one click.
For long-distance driving situations that require navigation, in the past, you could either use a navigation device or a mobile phone to listen to music and connect it via USB. With the emergence of Bijie’s screen mirroring feature, your mobile phone can become the entertainment system in your car, and various entertainment apps on your phone can be projected onto the screen, no longer feeling bored due to tedious operation or lack of content.
Different car models, different passengers, different car positioning, and different requirements for on-board screen projection make it appear that the screen projection is not uniform. However, Bijie Screen Projection is customized and renewed for different car models and seating positions to meet different needs.