LED display overview

Leds (Light Emitting Diode Emitting Diode) electronic display screen is the collection microelectronics technology, computer technology and information processing in one large display system. With its large picture, super vision, flexible display mode unique advantages, become the international use extensive display system. Is the information transmission facilities epoch-making products. According to its luminous wavelength can be roughly divided into visible leds, infrared leds. Visible in small power LED calorific value, long service life, less, the monochromatic glow, reaction velocity resistance, good mechanical properties collision machine different from traditional, small new product characteristics, photoelectric communication widely used in automobiles, new products, information of new products, consumer new products, lights and large information display, etc. Infrared leds also has the characteristics of visible light, but its wavelength in not visible range, is mainly applied in remote, wireless communications, optical fiber communication, sensor, automatic control, etc.

LED electronic display system is a new high-tech advertising bulletin propaganda media, since 1980s in mainland China since, with its market cheap, low power consumption, already can show graphic data, video images displayed, with clear pictures, colourful, flexible display mode in professions functions such as rapid promotion application.

After years of development, the LED display research, production technology has already become more and more mature, stable, new product quality has been improved greatly, and is a kind of mature new products. At present, the LED display new product categories more. Mainly has: the screen, graphic screen monochrome, double colors, full-color electronic dot matrix display and LED electronic digital tube display screen. In the above new product categories, full-color electronic dot matrix display is already one of the mainstream products now, other new product category has been applied more and more.

The LED display system advantages

Leds luminous device, with belonging to solid following advantages:

A long service life (more than 100,000 hours), photoelectric conversion efficiency, save electricity.

A dynamic response speed (NS level), can realize the display video level, full screen refresh rate refresh rate more than 72 frames per second.

A driving voltage (DC + 5V), can work directly with the microcomputer chip interface without special interface circuit design; With green computer logo;

A control program performance is good, easy to implement networking operation;

A computer can realize SVGA mode (256 level gray, 1280 * 1024 resolution), greatly convenient programming, essentially it belongs to the computer a vice displays.

LED video display technical characteristics

(1) clear pictures

According to the visual characteristics and LED display characteristics, adopted the company advanced nonlinear scanning technology (gamma correction), make show scenes of various levels get complete reflect, slight change present, greatly enhance clear picture quality for pixel less screen, the technology as its important.

Nonlinear differential display technology, namely, the bottom brightness district-level difference is small, increase series, gradually to high brightness region, causing increased differential vision effect ", then they differential consistent "with better visual effect.

(2) good compatibility

In the computer can compatible SVGA mode, may meet various video equipment.

(3) computer image with screen, screen mapping adjustable, with professional position control software.

(4) high grayscale techniques

The LED display with its gray level high, screen exquisite obtains the consistent high praise in the industry. In "the LED display detection method of IOBIT technology has breakthrough frontier, is to higher field forward.

(5) constant-current drop noise technology

The LED display driver chip adopt international advanced American TI company launched 5902 system, this system in a full-color LED display field dominate. The company combined with its chips with features, and TI company cooperative research formed the constant-current drop noise technology to ensure that the power supply and other noise factors on the impact of LED electricity screen reduced to the minimum degree.

(6) brightness adjusting technology

In order to adapt to different weather, let screen to best display effect, LED electronic display specially designed the brightness 32 level automatic and manual adjusting device. Guarantee the LED display in various circumstances can achieve best display effect.

(7) strong convective heat exhaust system

The LED display work out when the heat higher screen body, in order to guarantee the whole display system in stable condition, I run to display the cooling system made a thorough research, considering all the flow airflow, developed a strong convective row heat system, make the system more stable and reliable.
(8) media network

The advent of the information age, let the company comprehensively launched media network system solutions, the company put the LED display system as a network interface terminal formation of standardization of video signal, audio signal standard, direct access network other equipment, strong compatibility.
(9) perfect distribution systems
A distribution system with remote control function
A power supply instructions with function
A with the flow, short-circuit, blackouts and various protecting function, can automatic processing various emergency situation.
A has the function of automatic switch screen time, which can realize none, perhaps more ways of output and delay has the function of power.
A intelligent power, which can realize the fan's open and close automatically, the overheating automatic protection, and can automatically restored, no man to maintenance.
(10) powerful broadcast system
DaBing playback software using Delphi programming, user friendly interface, powerful, support any brand of PC hardware and software WIN98 operating system, all available online job, so this application software has the function of remote control, truly realize the computer screen what you see is shown. Through the programming can automatically selects the broadcasting equipment, realize no one under the condition of the broadcast, the various information all can achieve good broadcasts.
Video: should the video from various devices broadcast signals, and can change to a different video source, multi-channel video source available through multimedia controller and monitoring and switching, and can be used for video screen to narrow or enlarge operation.
A word: can play many kinds of writing various font, font and different text information, also can realize flip, mobile, rotation, snow, GunBing, flashing a dozen shows the function such as.
A computer image information: can play different formats of graphics, image files. Such as: BMP, TGA, GIF, etc.
A animation: can play ANIMATOR PRO, 3DMAX software such as making 2d, 3d animation, and support the use of compressed card collection AVI signals, package has convenient interface interface, rich CaiLiaoKu, form library and advanced rendering technique, can produce high quality 3d animation, make creative advertising lifelike realization.
A music: support soundcard and cd-rom and other multimedia equipment, can play WAV/MID etc sound files, still can directly control CD players.
A rich content: this system to support multimedia and peripherals, make the LED display shows colorful contents. Such as: video card, sound card, cd-rom, touch screen and various video equipment.
A layout convenient: powerful software function can separately display video, text and image, etc.; Available in the same screen display various information, any compiled; Also in video image can be added to the text messages, animation, etc.
A is easy to make: development tools is based on WINDOWS object-oriented multimedia platform, wysiwyg. Take icon toolbar, without programming.
A resourceful: in normal air process, if you need temporary increase content can be locked to the screen, no shutdown "black" screen.
A network interface: through with all kinds of network database with network interface card LAN and remote network interface, in the system software support, extraction of all kinds of information network.

System software
To realize the LED display system, many functions can be equipped with some systems support software:
A simplified Chinese Win98
A 3d animation software: 3DS
A 2d animation software: ANI
A multimedia production software
A FoxPro
A c + + Borland 4.0

(1) special control software
Special control software is seriously analysis of LED screen user of the functional requirements of the system, which specializes in software after. Has the following features:
A video monitor screen arbitrarily regulate use situation, is applicable to any parameters monitor display;
A dynamic display on the screen can be various animation, pictures, text files, can install delay and proportion to size, can looping;
A display window in the front, in display can run other procedures, without affecting interface;
A operation and display intuitive user interface good;
A system out automatically save parameters, restarting need not setting;
A can install system after the operation automatic playback function, they start without manual operation;

This system for text files can press window size automatically typesetting, new-line, another page. Can transform font, size, color;

A two-dimensional 3d animation playback function;
A video playback and text superimposed function;
A text information recorded and play function;
A system own maintenance and management functions;
A perfect online help function;
A call by the database file;
Should be read automatically network database data, and synchronous transmission to the screen shows;
A can control existing documents (including: notice, trains, routes, time, ticket price and so on) the v time;
A display can fluctuate, right movement, crossover, waterfalls, stretching, closed, amplification, narrow, etc; more than 30 kinds
A receiving the information breaks interruptible displays or superimposed on the picture shows;
A colorful lifelike, point-by-point red, green double colors LED devices.
The above functional integration in a unified surroundings, and the operation style accord with Chinese Windows practices norms.