System for splicing display screens and control method thereof
A technology for splicing and controlling interfaces, applied in the splicing system and its control field, can solve the problems such as the control module cannot control the video processing module, the glass panel and the display screen are easily damaged, and the I2C bus cannot work normally, and the image effect can be enhanced. , The effect of convenient maintenance and replacement, and fast start-up speed
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[0048] Such as figure 1 As shown, a splicing screen system includes multiple spliced display units, video distributors, and control interfaces. Each display unit includes a display screen and a video processing board, wherein the display screen and the video processing board pass through a display interface Connected.
[0049] Such as figure 2 As shown, the video processing board includes a video processing module (an ASIC chip can be used) and a control module (an ARM chip can be used), and the video processing module and the control module are connected through a UART interface and an I2C interface. Said through the UART interface and I 2 The dual-interface method of C interface ensures the stability and smoothness of the work of the splicing screen system.
[0050] Wherein, the control module of each of the video processing boards is connected to the control interface through an RS485 interface.
[0051]The video processing board performs video control through a control sig...
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