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What are the common LED display panel splicing processor interfaces?

2019-08-01

With the continuous development of science and technology, LED display panel splicing processors have more and more interfaces.  In this case, some new friends are becoming more and more confused about what all kinds of interfaces are used for and how to distinguish between them.  Here, I'd like to briefly introduce some of the most common processor interfaces on the market.




LED Display Splice Processor Interface: DVI




DVI interface is relatively large compared with VGA, HDMI, DP and other interfaces, and is currently the most important interface type for LED splicing processors.  Its greatest advantage is fast speed and clear picture. DVI transmission is a digital signal, which does not need to go through the complicated conversion process from digital to analog to digital, thus greatly saving time and effectively eliminating the phenomenon of dragging shadows while speeding up the speed.  Compared with VGA, DVI has a finer picture at high resolution and is less susceptible to signal interference.




LED Display Splice Processor Interface: VGA




  VGA interface has 15 pins and 3 rows with 5 holes in each row. Most LED splicing processors have this interface, which transmits red, green and blue analog signals as well as synchronization signals (horizontal and vertical signals).  Many people think that only HDMI interface can transmit high-definition signals, which is a mistake sometimes, because 1080P images can be displayed through VGA connection, even with higher resolution.




  LED Display Splice Processor Interface: HDMI




The HDMI High Definition Multimedia Interface Organization officially released the HDMI version 1.0 standard in December 2002, marking the formal entry of HDMI technology into the historical stage.  HDMI can not only meet 1080P resolution, but also support digital audio format.  Compared with DVI and VGA, HDMI interface is smaller in size, but it is less widely used in LED splicing processors than DVI and VGA because of its smaller port, no reinforcement device and easier loosening.




  LED Display Splice Processor Interface: SDI




  SDI interface is a "digital component serial interface", which uses coaxial cable and BNC interface as the cable standard.  In other words, in the process of converting the existing traditional analog frame system into a high-definition monitoring system, we do not need to rewire, only need to replace the front-end and back-end parts, which will save huge time and labor costs for the project.  Therefore, the use of LED splicing processors has gradually increased in recent years.




  LED Display Splice Processor Interface: Display Port (DP)




At a time when high definition video is about to become popular, it is impossible to stand on its feet without a high bandwidth display interface.  When DP came out, the bandwidth it could provide was as high as 10.8Gb/s, even HDMI1.3 was slightly lower than DP1.0;.  In addition, DP can realize more functions on one cable besides audio and video signals sharing one cable.  Undoubtedly, it is to realize the greatest degree of integration and control of peripheral equipment.


However, due to various limitations, DP interface is still not the mainstream interface for LED splicing processors, but its superior transmission quality, high scalability and more reliable content protection technology will definitely be a new trend.

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