(1) system composition
The system consists of special computer equipment, display screen, video input port and system software.
Computers and special equipment: Computers and special equipment directly determine the functions of the system, and different types can be selected according to the different requirements of users for the system.
Display screen: the control circuit of the display screen receives the display signal of the computer, drives the LED to emit light to generate a picture, and outputs sound by adding a power amplifier and a sound box.
Video input port: provides a video input port. The signal source can be a video recorder, DVD player, video camera, etc. It supports NTSC, PAL, S_Video and other formats.
System software: provide LED playing special software, powerpoint or ES98 video playing software.
(2) System function
The system has the following functions:
With the computer as the processing and control center, the electronic screen corresponds to a certain area of the computer display (VGA) window point by point, the display content is synchronized in real time, and the screen mapping position can be adjusted, so that the size of the display screen can be selected at will.
The display lattice adopts ultra-high brightness LED (red and green double primary colors), 256 shades of gray and 65,536 combinations of color changes, with rich and vivid colors, and supports VGA 24-bit true color display mode.
Equipped with graphic information and 3D animation playback software, it can play high-quality graphic information and 3D animation. There are more than ten ways for playing software to display information, such as covering, closing, opening curtains, alternating colors, zooming in and out, etc.
Using special program editing and playing software, you can edit, add, delete and modify information such as text, graphics and images through different input means such as keyboard, mouse and scanner. It is arranged to be stored in the hard disk of the control host or server, and the sequence and time of program play can be integrated and alternately played, and can be superimposed on each other.
Can receive and display video signals, such as video recorders and DVD players.
Brief introduction and classification of LED electronic display system
In recent years, the LED display screen market has developed rapidly, and has been widely used in trading markets such as banks, posts and telecommunications, taxation, airports, stations, securities markets, hospitals, electric power, customs, stadiums and gymnasiums, etc. where announcements and publicity are needed.
LED is short for light emitting diode. LED display screen is a display device composed of light emitting diodes. Adopting low-voltage scanning drive has the following advantages: 1, power saving, 2, long service life, 3, low cost, 4, high brightness, 5, large viewing angle, 6, long visual distance, 7, and many specifications and varieties.
LED display product series:
A, monochrome, color bar display screen b, computer-controlled digital display screen c, monochrome graphic display screen d, tricolor (red, green and yellow) graphic display screen e, dot matrix and digital mixed display screen (security screen) f, bicolor (red, green and blue) multimedia video synchronous display screen g, tricolor (red, green and blue) multimedia.
LED display screen classification:
According to the display color, it is divided into three colors: single red, single green, double primary colors of red and green and red, green and blue.
According to the use function, it is divided into: graphic display, multimedia video display, market display and bar display.
According to the use environment, it is divided into indoor display, outdoor display and semi-outdoor display.
According to the diameter of the luminous point, it can be divided into: φ3.0, φ3.7, φ4.8, φ5.0, φ8.0, ph8, ph 10, ph 16, ph20, etc.
Among the LED display screens with basic light-emitting points on the market, indoor LED display screens can be divided into 3mm, 3.75mm, 5mm, 8mm and φ 10mm according to the diameter of LED single point. Outdoor LED display screen can be divided into φ 16mm, φ 19mm, 22mm and 26mm according to pixel diameter. According to the size of LED display screen used in the market category, it is divided into 2.0cm(0.8 inch), 2.5cm( 1.0 inch), 3.0cm( 1.2 inch), 4.6cm (1.8 inch) and 5.8cm(2.3 inch).
Display color: LED display screen is divided into monochrome LED display screen (including pseudo-color LED display screen), two-color LED display screen and full-color (three-color) LED display screen according to display color. According to the gray scale, it can be divided into 16, 32, 64, 128 and 256 gray LED display screens.
Display performance: LED display screens are divided into text LED display screens, graphic LED display screens, computer video LED display screens, TV video LED display screens and market LED display screens according to display performance. Quote LED displays usually include LED displays for securities, interest rates, futures and other purposes.
Technical characteristics of LED display screen:
A, excellent effect: using dynamic scanning technology, the picture is stable, without miscellaneous points, the image effect is clear, and the animation effect is vivid and diverse; The video effect is smooth; B, rich in content: it can display text, charts, images, animations and video information; C. Flexible mode: the display mode can be arranged by the user at will; D quality assurance: imported luminescent materials, high-quality IC chips and noise-free high-power power supply are adopted; E, large amount of information: the information displayed is not limited; F, convenient maintenance: modular design, convenient installation and maintenance;