In the rapid development of today's modern information society, large-screen displays have penetrated from commercial applications such as public information display to consumer multimedia applications.
With the development of broadband networks, digital multimedia content will dominate the information world, and new large-screen display devices will replace traditional TVs as the center for people to enjoy information and multimedia content.
concept
LED display control system (LEDDisplayControlSystem), also known as LED display controller, LED display control card. It is the core component of the LED display, which is mainly responsible for receiving the picture and video display information from the computer serial port or DVI interface, placing it into the frame memory, and generating the serial display data that can be recognized by the LED display screen according to the partition driving method. Scan control timing.
System composition
The LED graphic display system consists of a software control system, a wireless transmission system, a device main controller, an LED display dot matrix, and a power supply.
LED display frame
System work process
The main tasks of the software control system are graphic editing, font extraction and saving, image preview and file transmission. The wireless transmission system mainly completes the file information transmission from the PC to the LED display. The main task of the LED dot matrix in the hardware control system is to pass the current. The control completes the information display, and drives the LED dot matrix row and column by the control of the scanning drive mode of the single chip microcomputer to realize the driving of the device and finally realize the received graphic display function.
1. The signal source can be a video output device such as a camera, a notebook computer, a desktop computer, or a DVD;
2. The signal is converted into a DVI signal through a video processor and connected to the sending card through a DVI line;
3. When the distance between the control room and the display screen is greater than 100M, use the fiber conversion card to communicate with the optical cable;
4. Each display box has one receiving, and the receiving cable uses the network cable for connection communication;
5. Since the display screen is T-shaped, the system transmission adopts the communication method from bottom to top;
6, the display can play a variety of content, you can switch the input source;
7. Use the camera to play the real-time video signal to the display, or link the digital set-top box to play the TV content;
8. You can use the playback software to play pre-processed video picture information on your computer.
System advantage
Compared with traditional display devices, this huge demand for the future makes large-screen display technology the focus of everyone's attention:
(1) LED display screen is rich in color, display modes vary (graphics, text, 3D, 2D animation, TV screen, etc.), high brightness, long life, is an epoch-making product of information dissemination facilities;
(2) LED display is a high-tech product integrating optical and electronic technology, microelectronics technology, computer technology and information processing technology. It can be used to display text and computer screen synchronization graphics. With its advantages of large screen, super-visual, flexible and variable display, it is a widely used display system in the world.
(3) LED display is widely used, financial securities, bank interest rates, commercial advertising, cultural entertainment, etc., with huge social benefits and rich economic benefits.
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