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System composition architecture of LED display
by：Demo
2021-07-13
The structure of the LED display system:
(1) Display unit
This is the main part of the LED display screen, composed of luminescent materials and drive circuits. Indoor screens are unit display boards of various specifications, and outdoor screens are unit cabinets.
(2) Main Controller
The function is to buffer the input RGB digital video signal, transform and reorganize the gray scale, and generate various control signals.
(3) Switching power supply
The purpose is to convert 220V alternating current into various direct currents and supply them to various circuits.
(4) Transmission cable
The display data and various control signals generated by the main controller are transmitted to the screen body by the twisted pair cable.
(5) Scan Controller
The function of the circuit board is to buffer data, generate various scanning signals and duty cycle gray control signals.
(6) Dedicated display card and multimedia card (video card)
In addition to the basic functions of a computer display card, the dedicated full-color LED display card also outputs digital RGB signals, line, field and blanking signals to the main controller at the same time. In addition to the above functions, the multimedia card can also convert the input analog Video signal into a digital RGB signal (ie, video capture).
(7) Other signal sources and external devices
Including computers, TVs, Blu-ray, DVD, VCD, camcorders, etc.
(1) Display unit
This is the main part of the LED display screen, composed of luminescent materials and drive circuits. Indoor screens are unit display boards of various specifications, and outdoor screens are unit cabinets.
(2) Main Controller
The function is to buffer the input RGB digital video signal, transform and reorganize the gray scale, and generate various control signals.
(3) Switching power supply
The purpose is to convert 220V alternating current into various direct currents and supply them to various circuits.
(4) Transmission cable
The display data and various control signals generated by the main controller are transmitted to the screen body by the twisted pair cable.
(5) Scan Controller
The function of the circuit board is to buffer data, generate various scanning signals and duty cycle gray control signals.
(6) Dedicated display card and multimedia card (video card)
In addition to the basic functions of a computer display card, the dedicated full-color LED display card also outputs digital RGB signals, line, field and blanking signals to the main controller at the same time. In addition to the above functions, the multimedia card can also convert the input analog Video signal into a digital RGB signal (ie, video capture).
(7) Other signal sources and external devices
Including computers, TVs, Blu-ray, DVD, VCD, camcorders, etc.
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