With the increasing demand for outdoor advertising in the market, the application scale of outdoor LED display is expanding rapidly. Faced with the complex brand products on the market, how can industry users choose products that satisfy themselves? Understanding the parameters of LED display screen is the first prerequisite.
1. Clarity: According to the best viewing distance point, the required area of the screen is determined, and the best distance of "40,000 pixels/" is 5-50 meters. The most advanced 16-bit data interface is used to further improve the clarity of the screen.
2. Brightness: The brightness of the screen is designed to be more than 2500 cd/, which not only ensures the color lifelike and clear image of the full-color indoor LED display when it is in normal use, but also ensures that the LED display has enough brightness and vivid and clear video image when the tube attenuation exceeds 30%. Refresh rate: The processor and the screen are equipped with super-five twisted-pair shielding wires and high performance control IC. The high refresh rate of the screen can be designed at (> 1000HZ) to ensure that there is no water ripple and flicker when the video is played, low digital loss and anti-electromagnetic interference. Power supply and signal transmission mode: Because of the importance of full-color LED display, power supply and signal transmission should be specially processed technically, using high-quality military grade connector design. Further control failure caused by various pull-up forces at the connector.
3. Control mode: Select the self-designed control system, and conduct 240 hours of uninterrupted power aging screening, and then select a highly reliable control system. In addition, dual-redundancy waste heat backup is adopted in the control mode. Once a problem arises, another signal line will be connected to the system, and the system will continue to work normally and connect smoothly.
4. Raw materials: All raw materials of LED display screen are brand-name high-quality products, and the most important LED lamp is high-quality LED lamp.
5. Three-level product aging process: first, 24-hour power aging is carried out on the module produced by the automated assembly line, then 48-hour power aging is carried out on the single box, and finally, 72-hour power aging is simulated for the finished display panel assembled on the spot. Only after passing the qualification can it be shipped to the site for assembly.
6. Product quality control: All products are manufactured in strict accordance with ISO 9001-2000 quality certification system documents. (See Quality Certificate), will be strictly in accordance with the waterproof IP65 test, to achieve complete waterproof effect. Installation and debugging of LED display: According to the design plan, the installation and debugging of LED display is strictly carried out, and the installation level reaches C level or above (the highest level of installation of LED display).
7. Leading system software (for screen re-application): The operating system uses Windows XP and supports the latest Windows products provided by Microsoft. All applications are based on Windows and have friendly interface. Play software has a rich clock function, it can display the current date, the current time, and computer time synchronization display clock can be analog clock, can also be a digital clock. The software adopts advanced threading technology, and can play text, animation, clock, photos, audio and so on in multi-threading when playing the software.
8. Perfect system function design (for screen re-application): This system can meet the requirements of assembly, performance, television relay and advertisement broadcasting. This project's LED display system has multimedia, multi-channel, real-time transmission of high-speed communication data and video interface. It can easily introduce various forms of information sources into the computer network system, and realize the unified control of various audio and video input.
9. Video playback function can display true color dynamic video images; it can transmit closed-circuit TV and satellite TV programs with high fidelity; multiple video signal input and output interfaces: composite video, Y/C video (S_Video), YpbPr, VGA (RGBHV), DVI, HDMI, SDI; it can play video programs such as video recorder, video disc player (VCD, DVD, LD) with high fidelity; it can overlay text on video pictures. Functions such as animation and static pictures, and real-time editing and playing functions such as panoramic, close-up, slow-motion and special effects can be realized through editing equipment. Brightness, contrast, saturation and chroma can be adjusted by software, and the range is 256; it has image freezing function; it has three display modes: VGA + Video, Video and VGA; it has horizontal/vertical position compensation function; and it has display synchronization function.
10. Computer graphics information playback function can display various computer information, such as text, graphics, pictures, two-dimensional and three-dimensional animation, etc. It has a rich playback mode, display rolling information, notifications, slogans and so on, and has a large storage capacity of data information. The display panel can open multiple windows, display calendar and clock, and insert and broadcast one-line mobile text. There are many Chinese fonts and fonts to choose from. You can also input many foreign languages such as English, Spanish, French, German, Greek, Japanese, Latin and Russian. The broadcasting system has multimedia software, which can input and broadcast many kinds of information flexibly. There are more than 20 broadcasting modes, such as left-right rolling, up-down rolling, left-right driving, up-down driving, diagonal driving, diffusion, fan-shaped, rotation, scaling and so on. Display network data information through network connection. It is equipped with network interface, which can connect with computer and share network resources. It has standard audio signal output interface to achieve audio-visual synchronization.