System composition architecture of mobile smart screen factory china:
(1) Display unit
This is the main part of the mobile smart screen factory china screen, composed of luminescent materials and driving circuits. Indoor screens are unit display boards of various specifications, while outdoor screens are unit boxes.
(2) Main controller
Its function is to buffer the input RGB digital video signal, perform gray-scale transformation, reorganize it, and generate various control signals.
(3) Switching power supply
Its purpose is to convert 220V alternating current into various types of direct current to supply various circuits.
(4) Transmission cables
The display data and various control signals generated by the main controller are transmitted to the screen body via twisted-pair cables.
(5) Scanning controller
The function of this circuit board is to buffer data, generate various scanning signals and duty cycle grayscale control signals.
(6) Dedicated display cards and multimedia cards (video cards)
In addition to the basic functions of a computer display card, the dedicated display card for LED full-color screens also simultaneously outputs digital RGB signals as well as row, field, and blanking signals to the main controller. In addition to the above functions, the multimedia card can also convert the input analog Video signal into a digital RGB signal (i.e., video capture).
(7) Other signal sources and their external devices
Including computers, televisions, Blu-ray, DVD players, VCDS, video cameras, etc.
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