What are the LED display interfaces?

87 views admin 2023-10-27

Friends who have installed LED display know that now the full-color display picture quality requirements are getting higher and higher, the installation of the LED display needs to install the corresponding interface, in order to display video or high-definition pictures, and now the analog transmission is being replaced by the Gaojie teaching word, many friends do not know what the LED screen interface is. The common frequency watching connection of LED display mainly includes USB interface, AV input interface, VGA input interface, DVI input interface, HDMI input interface.

HDMI is a new generation of Multimedia interface standard, the full name is High-Definition Multimedia nterface, the Chinese meaning of high-definition multimedia interface. Like DV, it transmits an all-digital signal. The difference is that HDMI can not only meet the resolution of 1080P, but also support digital audio formats, that is, a line to achieve video and audio synchronous transmission. It can be said that the HDMI interface is an improvement of the DV interface, and it is fully compatible with the DVI interface standard.

DisplayPort is a display interface published by the Video Electronics Standards Association VESA. Referred to as DP, as the successor to the DM1 interface, DisplavPort will transmit video signals while adding support for high-definition audio signal transmission, while supporting higher resolution and refresh rate. When high-definition video is about to become popular, there is no high bandwidth display interface can not stand a foothold.

VGA video graphics array, VGA interface that the computer uses VGA standard output data dedicated interface, a total of 15 pins, divided into 3 rows, each row of 5 holes, is the most widely used interface type on the graphics card, the vast majority of graphics cards have this interface. It transmits red, green, and blue analog signals as well as synchronous signals (horizontal and vertical signals).

The English abbreviation of USB is UNIVERSAL SERIALBUS, which is translated into Chinese: universal audit bus. Also known as the universal series interface, it can support hot swap, can connect up to 127 PC external devices: there are two interface standards USB1.0 and USB2.0.

The DV interface is relatively large in VGA, HDM1, DP and other interfaces, and is the main type of LED display interface at present. DM can transmit digital signals without going through digital-to-analog conversion, so the picture quality is very high. At present, there are two common DV interfaces: DV1-Diaital(DVI-D) and DVI-nteqrated(DV1-), DM-D only supports digital signals. DV1- supports not only digital signals but also analog signals.

SDI interface is an acronym for "serial diital intertae". Using the same cable, with the BNC interface as the cable standard, that is to say, in the process of converting the existing traditional analog framework system into a high-definition monitoring system, there is no need to rewire, only to replace the front and back end part, which will save huge time and labor costs for the project.