did lcd video wall unit

System advantages 1. Centralized control and centralized management: Through the WAN network remote control, there is no need to manually change the card or insert the card, so that different places, different audiences, and different time periods can play different advertising information content. Software upgrades can also be operated remotely, without manual presence. 2. Real-time release: Immediately release emergency information, emergencies, and insert media files to achieve the simultaneous release of bank foreign exchange, fund interest rates, policies and regulations, promotional activities, weather forecasts, clocks and other instant information. 3. Stability: Efficient and stable embedded design, plug and play, no virus infection. 4. Split screen display: At the same time, multiple information combinations such as audio, video, pictures, letters, etc. are played to realize the free adjustment of any position of videos, pictures, and subtitles, which solves the contradiction that only advertising is less concerned or only entertainment programs have no advertising value. 5. Information security: The use of special pricing technology can control the broadcast of all non-audited programs, effectively ensuring the safety of outdoor media transmission. 6. HD playback: Supports high-definition playback of MPEG1, MPEG2, MPEG4, WMV9, H.264 and other media (except for the two formats of rm and mkv, other media formats are basically supported.). Internet function 1. Support all existing IP networks, support various network protocols and provide service quality assurance. 2. Real-time information release: rolling subtitles, pictures, video clips, etc. 3. The network updates the broadcast content without manual replacement. 4. The playback terminal can

LCD mainly includes TFT, UFB, TFD, STN and other types of LCD. The structure of LCD is to place liquid crystal in two parallel glasses. There are many vertical and horizontal small wires between the two glasses. The direction of rod crystal molecules is controlled by power on, and the light is refracted to produce a picture.   High brightness, The higher the brightness value of the array LCD, the brighter the picture will be without blurring. Advanced display can display clearer and higher brightness product features. We rely on polarization filters and light itself. With the practice of natural light in all corners of the world, a series of liquid crystal filters must be parallel.   The higher the contrast, the more colorful and saturated the color will be, and the higher the plane will be. On the contrary, the color change is low, the color display is poor, the image will be flattened, and the color change value is different, even higher. Compared with CRT imager, LCD dot matrix LCD display has the advantages of zero radiation, low power consumption, small heat dissipation, small volume, accurate image recovery and high character visualization.   The view of “big view” simply means that the view in front of the screen can be seen the larger the sight distance, the easier it will be; As long as the viewer changes the viewing position slightly, the picture may become blurred.

Capacitive touch screen and resistive touch screen are mainly different in touch sensitivity, precision, cost, multi touch feasibility, anti-damage, cleaning and visual effect in sunlight.   Touch Sensitivity Resistive touch screen: it needs pressure to make all layers of the screen contact. It can be operated with fingers (even with gloves), nails, stylus, etc. Support for stylus is very important in Asian market, gesture and character recognition are valued everywhere. Capacitive touch screen: the slightest touch from the surface of a charged finger can also activate the capacitive sensing system below the screen. Non-living objects, nails and gloves are invalid. Handwriting recognition is difficult.   Accuracy Resistive touch screen: the accuracy is at least a single display pixel, which can be seen when using the stylus. It is easy to recognize handwriting and is helpful to operate in the interface using small control elements. Capacitive touch screen: the theoretical accuracy can reach several pixels, but it is actually limited by the finger contact area. So that it is difficult for users to accurately click the target less than 1cm2.   Cost Resistive touch screen: very cheap. Capacitive touch screen: the price of capacitive screen from different manufacturers is 10% to 50% higher than that of resistive screen. This extra cost doesn’t matter for flagship products, but it may deter mid-priced phones.   The feasibility of multi touch Resistive touch screen: not possible unless the resistive screen is reconstituted and connected to the circuit of the machine. Capacitive touch screen: depending