Basic structure and control system features of LED display

1) Basic structure of LED display

The display screen system consists of three parts: signal source, control system and display screen body.

Control system signal access, conversion, processing, transmission, imaging control

Through various cards (such as video capture cards or multimedia cards), the analog signal is converted into a digital signal, the signal is transformed and reprocessed according to the characteristics of the LED display, and the true restoration of the image is achieved through the scanning circuit.

The display screen shows the signal source content

Display text, graphic information or video information. It is live broadcast, broadcasting TV satellite TV; playing video programs such as VCR and DVD; superimposing text information on the TV screen through the subtitle machine, panorama, close-up, etc. It is actually editing and playing functions. Display various graphics, patterns, animations; display multiple texts, and the text can be scaled steplessly.

2) LED display simulation connection and system control effect diagram

3) LED full-color display control and display technology features

1. The most advanced 65536 (16-bit) grayscale control technology is adopted to completely solve the mosaic phenomenon of the full-color display screen when displaying at low grayscale, so that the displayed image has a natural transition, delicate and bright colors, and fully realizes the true restoration of the video source.

2. The display contrast reaches 6400:1, making the displayed image clear and overcoming the influence of external brightness changes on the full-color display.

3. The display color can reach 281.5 trillion, which can fully meet the input requirements of various advanced video sources and display perfect and vivid colors.

4. The virtual pixel display technology is used to improve the clarity of the LED display screen by 4 times when the display size is the same as that of the ordinary LED display screen, so that the LED display screen can display unparalleled fine images. (See the figure below)

5. The driver board level grayscale control technology is adopted to integrate the nonlinear correction function into the driver board chip. The 65536 (16bit) grayscale correction technology is adopted to greatly improve the data transmission rate and the system stability. The LED tube is driven in a nonlinear correction mode to adapt the LED display to the nonlinear needs of the human eye, thereby displaying vivid and realistic video pictures with more stable images.

6. The use of gigabit single network cable transmission technology and board-level grayscale processing technology greatly improves the data transmission rate. The scanning frequency of the 8-scan display can reach 1200Hz, eliminating the flickering of the LED display and the fatigue of the human eye, and maximally meeting the shooting needs of digital devices.

7. The constant current driving circuit is adopted to ensure the stability and reliability of the LED light-emitting tube, while extending the service life of the LED light-emitting tube and ensuring the consistency of the brightness of the LED light-emitting tube.

8. The brightness and contrast of the entire LED display screen and each unit module can be adjusted individually on-site through the software. It has a memory function to ensure the consistency of the brightness of the entire display screen.

9. The point-by-point brightness control technology can ensure the uniformity of the entire LED display screen. After the display screen has been running for several years, the brightness of the LED light-emitting tube will decay to varying degrees. The point-by-point brightness adjustment technology only takes two hours to restore the display screen to its uniform state when it leaves the factory.

10. The system redundancy technology can realize two-way data transmission of the system scanning controller. The damage of one scanning controller or the failure of the cascade line will not affect the normal display of the whole screen.

11. The cascade error reporting and data feedback technology can be used to intuitively monitor the entire LED display system connection and unit connection status at the local control end or remotely to reduce the maintenance cost and troubleshooting cycle of the entire equipment.

12. Use industrial-grade switching power supply and reduce the load by 20%. Use advanced power management technology, with over-current, over-voltage, overheating, short circuit and other protection measures. The whole screen generates very low heat and can operate stably for a long time.

13. The system technical standard resolution is 1280x1024, and various higher resolution displays can be customized. The transmission distance between the computer and the LED display: up to 120 meters using ordinary network cables and up to 15 kilometers using optical fiber.