With the continuous development of technology, LED display screen splicing/processors have more and more interfaces. In this situation, some novice friends become increasingly confused about what various interfaces are used for and how to distinguish them from each other. Here is a brief introduction to several common processor interfaces currently on the market.
DVI
Compared to VGA, HDMI, DP and other interfaces, DVI interfaces have a larger volume and are currently the main type of interface for LED splicing/processors.
Its major advantage is fast speed and clear image. DVI transmission is a digital signal, which does not require the tedious process of digital → analog → digital conversion, greatly saving time and effectively eliminating dragging and other phenomena while accelerating speed. Compared to VGA, DVI makes the image more delicate at high resolution and less susceptible to signal interference.
VGA
The VGA interface consists of 15 pins and 3 rows, each with 5 holes. The vast majority of LED splicing/processors come with this interface, which transmits red, green, blue analog signals as well as synchronization signals (horizontal and vertical signals).
Many people believe that only the HDMI interface can transmit high-definition signals, but sometimes this is a misconception because a VGA connection can also display 1080P images, and even achieve higher resolution.
HDMI
The HDMI high-definition multimedia interface organization officially released the HDMI 1.0 standard in December 2002, marking the official entry of HDMI technology into the historical stage.
HDMI not only meets the resolution of 1080P, but also supports digital audio formats. Compared to DVI and VGA, HDMI interfaces have a smaller volume, but due to their smaller ports without reinforcement, they are more prone to loosening. Therefore, their application in LED splicing/processors is currently not as widespread as DVI and VGA.

SDI
SDI interface is a type of digital component serial interface that uses coaxial cables and BNC interface as the cable standard. This means that in the process of converting existing traditional analog framework systems to high-definition monitoring systems, there is no need to rewire, only the front-end and back-end parts need to be replaced, which will save huge time and labor costs for engineering. Therefore, in recent years, the use of it in LED splicing/processors has gradually increased.
Display Port (DP for short)
At a time when high-definition video is about to become popular, it is impossible to establish a foothold without a high bandwidth display interface. When DP was first introduced, it could provide a bandwidth of up to 10.8Gb/s, even HDMI1.3's bandwidth was slightly inferior to DP1.0; In addition, DP can share the same cable for audio and video signals, and can also achieve more functions on the same cable. Undoubtedly, it is a significant integration and control of peripheral devices.
However, due to various limitations, DP interfaces are still not the mainstream interface for LED splicing/processors. However, their superior transmission quality, high scalability, and more reliable content protection technology will undoubtedly be a new trend.