Fourth, different people have different color resolution capabilities under different conditions. Therefore, objective indicators of color reproduction must be found. The wavelengths of the three primary colors of red, green and blue: 660nm, 525nm, and 470nm; it is better to use a 4-tube unit with white light (more It is also possible for 4 tubes, mainly depending on the light intensity); the three primary colors have 256 gray levels; the LED pixels must be processed by non-linear correction. The red, green and blue light distribution control system can be realized by a hardware system, or it can be realized with corresponding playback system software. LED display manufacturers secondly have a certain visual sensitivity to red compared to the other two colors, so red needs to be evenly distributed in the display space; thirdly, because people’s vision is aimed at the three colors of red, green and blue. Strong and different non-linear curve response, so it is necessary to correct the light emitted from the inside of the TV with the white light of different light intensities. Fourth, different people have different color resolution capabilities under different conditions. Therefore, objective indicators of color reproduction must be found. The wavelengths of the three primary colors of red, green and blue: 660nm, 525nm, and 470nm; it is better to use a 4-tube unit with white light (more It is also possible for 4 tubes, mainly depending on the light intensity); the three primary colors have 256 gray levels; the LED pixels must be processed by non-linear correction. The red, green and blue light distribution control system can be realized by a hardware system, or it can be realized with corresponding playback system software. LED display manufacturers 3. The special reality drive circuit classifies the current pixel tube methods as follows: (1) Scanning drive; (2) DC drive; (3) Constant current source drive. For screens with different needs, the scanning methods used are different. For the indoor dot matrix block screen, the scanning method is mainly adopted. For the outdoor pixel tube screen, in order to ensure the stability and definition of the image, a DC drive method must be adopted to add a constant current to the scanning device.

　　4, brightness control D/T conversion technology

　　 LED electronic display screens are composed of many independent pixels through permutation and combination. Based on the feature of mutual separation between pixels, LED electronic display screen light emission control driving mode can only be developed in the form of digital signals. When the pixel point emits light, its light-emitting state is mainly controlled by the controller, and independent driving is realized.

　　 5. Data reconstruction and storage technology

There are two main ways to organize the current memory bank. One is the combined pixel method, that is, all the pixels on the screen are stored in a single memory bank, and the other is the bit plane method, that is, all the pixels on the screen are stored in different In the storage body. The direct effect of multiple uses of storage is to be able to read multiple pixel information at one time, see the two organization methods. The bit plane method of the above two storage structures has more advantages, and the effect is better when improving the display effect of the LED screen. LED large screen 6. ISP technology in logic circuit design The traditional LED electronic display control circuit is mainly designed with conventional digital circuits, and its control generally adopts a combination of digital circuits. In traditional technology, after the circuit design part is completed, the circuit board manufacturing process is first performed, and the relevant components are installed and the effect is debugged after the manufacturing is completed. When the logic function of the circuit board cannot meet the actual demand, it needs to be remade until it meets the use effect.

How to identify the scanning method of the LED display?

How to identify the scanning method of the led display? At present, the driving methods of the led display on the market are static scanning and dynamic scanning. Static scanning is divided into static real pixels and static virtual, and dynamic scanning is also divided into dynamic real image and dynamic virtual; The driving device generally uses domestic HC595, Taiwan MBI5026, Japan Toshiba TB62726, generally has 1/2 scan, 1/4 scan, 1/8 scan, 1/16 scan.