parrot multi touch interactive whiteboard

Digital signage is a brand new media concept, which refers to public places where large shopping malls, supermarkets, hotel lobbies, restaurants, cinemas and others converge, and publish business, finance and entertainment through large-screen terminal display devices. Information multimedia professional audio-visual system. Its purpose is to broadcast advertising information to a specific group of people in a specific physical place and a specific time period, so that it has the effect of advertising. In foreign countries, some people put it alongside paper media, radio, television, and the Internet, calling it the “fifth media.” Overview With the continuous development of modern technology, the application of digital display technology will be everywhere. Digital signage relies on the integration of network and multimedia technologies to release and process information in the form of media, and interact with customer feedback in a timely manner. It has been widely used in finance, telecommunications, hospitals, stores, supermarkets, hotels, public places and other fields. The system adopts advanced design concepts and open interfaces, which can integrate a variety of applications. The digital signage system can count and record the playing time, number of times and playing range of multimedia content. It can also realize more powerful interactive functions while playing, which brings opportunities for the creation of new media. Features 1. Foolish program editing interface. Operators can use editing and publishing software to publish various text, icons, animations, videos, audio information and other digital information anytime, anywhere without special training, and integrate them into a “digital sign” for

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.

At present, the trend of semiconductor display industry chain transferring to China is becoming stronger and stronger, which strengthens the scale advantage and geographical advantage of domestic enterprises, promotes the continuous improvement of service and cost competitiveness, puts more and more pressure on Samsung and other enterprises, forces them to change the track, and domestic manufacturers will enter the “harvest period”.   LCD (liquid crystal display) industry once flourished in the United States and Japan, and then began to blossom and bear fruit in Korea and China. As an industry with significant scale effect, high capital barriers and prominent strategic position, expanding higher generation production lines against the industrial cycle is the core driving force for the long-term decline of industry costs and the continuous creation of new application markets.   Since the beginning of this year, the whole LCD market has been full of smoke. Whether the South Korean panel giant announced the closure of LCD production line, or the integrated sale of related domestic listed companies, the industry is full of highlights.   Will domestic manufacturers enter the “harvest period”? Since the beginning of this year, Samsung and LG, the two South Korean panel giants, have successively announced the closure of most LCD (liquid crystal display) production lines. India predicts that the proportion of Korean production capacity will decrease from 23% in the first quarter of 2020 to 8% in the first quarter of 2021.   A display industry analyst told the daily economic news that at present,