At the closing of the Winter Olympics, the curtain of LED display taking off again has opened!

The Beijing Winter Olympics came to an end yesterday. From the opening to the closing, it once again amazed the world with the power of science and technology and innovative ideas. In line with the opening ceremony, the closing ceremony is still full of science and technology. With the support of fuel kinetic energy, led, artificial intelligence, 5g, cloud computing, edge computing, VR, AR, naked eye 3D and other cutting-edge technologies, the closing ceremony of the Winter Olympic Games presented a magnificent, ethereal and romantic audio-visual feast. This time, the LED display "broken willows" sent off the visitors, and the torch went out, announcing the successful conclusion of the Beijing Winter Olympic Games. The era of more artistic, cool and high-definition LED display has come!

In the fancy skills of the closing ceremony of the Winter Olympic Games, the LED large screen is indispensable. According to the special press conference on the 2022 Beijing Information Center Science and technology Winter Olympics, the super large 8K ground screen in the center of the bird's nest is composed of more than 40000 LED modules with an area of 10552 square meters. The 1200 square meter 8K LED screen erected above it constitutes the world's largest ultra-high definition LED three-dimensional stage at present. The screen integrates the intelligent broadcast control system to present ultra-high-resolution video materials on all modules every minute. It not only perfectly shows various image effects, but also subverts the traditional stage performance mode by combining digital technology, artificial intelligence action capture and virtual reality enhancement technology.

LED display technology and display and control equipment are made in China. Local experts, local artists and local enterprises broadcast cultural confidence to the world through their works and China's highlight moment, winning the admiration of the world. From the opening ceremony to the closing ceremony, the nearly 10000 square meter LED display screen in the bird's nest hall vividly reflects the perfect beginning and end of the Winter Olympic Games. According to the person in charge of relevant projects at the opening ceremony, naked eye 3D needs to gather various technical support, not only to accurately control the hardware, but also to ensure the accurate generation of content. Although the broadcast control system this time adopts national equipment, the performance of the equipment is more advanced, stable and reliable than that of foreign broadcast control equipment in 2008, breaking the monopoly of foreign technology and presenting the most perfect visual effect for audiences all over the world. He also said: "in 2008, a playback server can only output 4 channels of 2K signals. This time, a playback server can output 4 channels of 4K signals. Multiple devices can achieve frame synchronization, and 8K cameras can't shoot errors."

In this winter Olympic Games, the broadcast control system built in the ground display system is responsible for the video playback, decoding, splicing and other broadcast control of the ground screen, ice cube, ice waterfall and central circular platform of the opening ceremony. It has seven 8K resolutions, with a playback frame rate of 50 frames per second, the synchronous playback of more than 27 4k50hz video signals, and the collection of real-time interactive pictures, which can bring the visual experience of ultra-high definition video playback, It carries at least 60% of the ceremony performance creativity of the opening ceremony.

At the closing ceremony, the most tearful goal is that the dreamy five rings of the 2008 Beijing Summer Olympic Games rise slowly, intersect with the snowflake torch platform, connect the 2008 Beijing Summer Olympic Games and the 2022 Beijing Winter Olympic Games, and commemorate the "double Olympic moment" in an innovative way. Time and space are staggered and unforgettable. "Double Olympics" linkage, dream five rings dream back to 2008.

According to the official wechat of China Aerospace Science and technology group, like the ice and snow five rings at the opening ceremony of the Winter Olympic Games, the dream five rings are also built by Aerospace Science and technology group, which is the "mini version" of the five rings in 2008. The five rings have a width of 18 meters, a height of 11.75 meters and a single ring diameter of 5 meters, which is much smaller than the dream five rings with a width of 36 meters, a height of 16.5 meters and a single ring diameter of 10 meters in 2008. It consists of 21000 LED light beads, which are like sparkling stars in the night. In addition, compared with 2008, its exhibition time is greatly extended and can support more than 60 minutes of performance.

You must have been impressed by the ice waterfall performance of "the water of the Yellow River comes up from the sky" at the opening ceremony. Since the bird's nest also has the task of closing ceremony performance, in order to ensure sufficient rehearsal time for the closing ceremony, the ice waterfall screen with a height of 60 meters, a total area of 2000 square meters and a total weight of 30 tons was quickly disassembled after completing the performance of the opening ceremony on the evening of February 5, The technical team created innovative disassembly methods, used multiple high-altitude cable-stayed sliding cables to disassemble synchronously in different areas, and set sliding cable fastening and deceleration devices to ensure that the screen box glided more safely. It took only 22 hours to complete the task of screen demolition in time, efficiently and intact.

Relevant display equipment providers said that in recent years, the large screens of major activities are basically in the form of leasing, which not only saves costs for the government, but also reduces the problem of heavy asset disposal in the later stage, reflecting the concept of frugal Winter Olympics. "From the beginning of receiving the task, we have considered the use of LED screen after the game. Although the video signal of the Winter Olympic opening ceremony can be played with a screen with a distance of 10 mm from LED beads, we still chose the current mainstream outdoor LED screen with a distance of 5 mm, and the size of the screen also selects the specification of 50 cm square, which is convenient for disassembly and assembly, and makes the subsequent use more flexible. Chips are also easy to use The most mainstream energy-saving products are adopted. "

This winter Olympic Games has set a new record in broadcasting, technology, content production and other aspects. It is the most watched Winter Olympic Games so far. Ultra high definition signal, cloud broadcasting and other technologies have brought a very live viewing experience. In the past, the "bullet time" special effect, which can only be seen in the film, was applied in the Beijing Winter Olympic Games. Through dozens of cameras to capture the athletes' actions 360 degrees in all directions, as well as intelligent algorithm synthesis and modeling, the audience can play back from multiple angles and in all directions. This special effect is inseparable from the stable 5g signal. With the advantages of high speed, low delay and large bandwidth, 5g has become the "protagonist" of the "science and technology Winter Olympics".

In addition, for the first time in the history of the Winter Olympic Games, the opening and closing ceremonies are broadcast live through 8K signal. 8K broadcasting adopts the highest TV broadcasting technical standard in the world, and the bandwidth of 8K signal is 32 times that of HD signal.

During the Winter Olympics, on February 16, led by the State Key Laboratory of UHD video and audio production, broadcasting and presentation of China Central Radio and television, the technical standards of the first batch of "100 cities and 1000 screens" UHD video and audio transmission system formulated by the world UHD Video Industry Alliance (UWA) were officially released. 5g + 8K has also become an important keyword in the UHD video industry.

In the opening and closing ceremonies of this winter Olympic Games, the performances presented by the on-site ground screen, other display screens, lights and sound are extremely romantic, highlighting cultural self-confidence and carrying forward the Olympic spirit. The eyes of the world focus on the Winter Olympic Games and LED display screens. "The Beijing Winter Olympics is a new starting point for the second take-off of the entire LED display industry." Industry experts commented on the impact of the Winter Olympics on the LED display industry. Beijing Winter Olympics is the most concerned ice and snow event in history. The stunning appearance of LED screen at the Winter Olympics has attracted the world's attention to the unparalleled display effect of LED screen. This is a new opportunity for the LED display industry. The influence of the Beijing Winter Olympics will greatly promote and promote the development of the whole industry.

Industry professionals also believe that: "the overseas market may be expanded and improved, and the cognitive change of LED display technology abroad may be greater than that at home." China's technical level, product R & D capacity and production capacity in the field of LED display are in the forefront of the world. Therefore, at present, 80-90% or even higher proportion of global LED production capacity is concentrated in China, and some foreign regions even no longer produce LED products. Therefore, Chinese display enterprises can take the opportunity of Beijing Winter Olympics to vigorously promote LED display technology and products around the world and further improve their brand influence.

From the performance of the LED display screen at the opening and closing ceremonies, the LED display screen is no longer a pure electronic display device, but is moving towards artistry. With the iterative updating of emerging new display technologies and black technology, it is unknown that the LED display screen will become a "work of art" to show the world in the future!

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