LED display screen is a flat display screen composed of LED dot matrix module or pixel unit. It has been widely used in social life. Let's take a look at the principle of led display.

Before we understand the principle of led display, we need to know the composition of the led display system.

The composition of the led display system

The led display system consists of computer-specific equipment, display screens, video input ports and system software.

Computers and special equipment: Computers and special equipment directly determine the function of the system, and different types can be selected according to different requirements of the system.

Display screen: The control circuit of the display screen receives the display signal from the computer, drives the LED to generate the picture, and outputs the sound by adding the amplifier and the speaker.

Video input port: Provide video input port, signal source can be video recorder, DVD player, camera, etc., support NTSC, PAL, S_Video and other standards.

System software: provide dedicated software for LED playback, powerpoint or ES98 video playback software.

Led display principle

The computer (or a workstation on the network) controls the display of the electronic display. It can run a program list written according to user needs and extract relevant display data on the computer's local hard disk or on the network server. Of course, the display effect of the LED screen can also be artificially generated. The pixels on the screen correspond to the pixel points on the corresponding areas of the screen control machine display, and are directly mapped.

Through the electronic display control computer, you can manually or automatically adjust the brightness, contrast, chromaticity, etc. of the display, select the gradation correction data suitable for the current environment, and control the computer to transmit the information to be displayed to the video signal processor and control unit for video. Information processing.

The video signal processing control system video processing controller is a set of multimedia video cards dedicated to the LED display, which is used for image processing of display data, including: gray level adjustment, brightness adjustment, image noise reduction, motion compensation, color coordinates Spatial transformation, chromaticity adjustment, mosaic elimination, etc.

The video controller can pass the processed display information to the communication module for long distance transmission to the display.

The communication system is connected to the control computer and display via 25 pairs of Super Category 5 twisted pair cables, which effectively ensures that the content displayed on the computer display is transmitted to the display.

Summary: This article mainly talks about the principle of led display, through the understanding of this article, you can more clearly understand the led display.

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