On February 4, the opening ceremony of the Beijing Winter Olympic Games was held in the National Stadium. As a city of double Olympics, Beijing will show the world its Chinese style with an opening ceremony integrating the concepts of scientific and technological innovation, low-carbon environmental protection and sports health.
The 21st Century Business Herald reporter learned that Leyard Optoelectronic Co.Ltd(300296) (300296. SZ) has undertaken the production and installation of ground screen, ice waterfall, ice cube, north-south stand screen and playback system of the Winter Olympic Games.
At the opening ceremony, 11000 ㎡ ground display screen, 1200 ㎡ ice waterfall, 600 ㎡ ice cube, 1000 ㎡ stand screens on both sides of the bird’s nest, and the broadcast control system supporting the visual effect of the whole performance. It forms the world’s largest LED three-dimensional stage, which are written by Leyard Optoelectronic Co.Ltd(300296) .
As the performance display system and performance stage of the opening ceremony, the ground display system carries more than 60% of the performance creativity of the opening ceremony. It is the largest LED three-dimensional stage in the world at present. The pixels reach 14880×7248, close to 8 8K resolutions, and can perfectly present the naked eye 3D effect. The total area of stage application led display screen is close to 14000 square meters, of which, Leyard Optoelectronic Co.Ltd(300296) provides 10552 square meters, covering the inland screen in the core area of the stage, 60 meter high ice waterfall, ice cube and North-South stand screen; In addition, Leyard Optoelectronic Co.Ltd(300296) is also responsible for the design, construction and operation guarantee of all broadcasting systems of the whole party.
In order to immerse the world in the Chinese space, Zhang Yifang {296} said that in order to create a perfect space for the world to experience the 3006 {296} led space, Zhang Yifang said that he would work together with the world to create a good story.
In order to achieve the display synchronization and immersive effect, Leyard Optoelectronic Co.Ltd(300296) technical team designed the broadcast control system according to the best point-to-point display effect. A total of 7 groups of 8K playback servers and 6 groups of video splicers were designed to realize the synchronization of video output of multiple players.
In addition, in order to avoid the risk of serial failure caused by the traditional daisy chain cascade synchronization, Leyard Optoelectronic Co.Ltd(300296) adopts a set of frame synchronization signal generator, and provides a unified external synchronization signal for 14 playback servers and 24 video splicers at the same time, so as to ensure that 38 independent devices work synchronously and do not interfere with each other, and the synchronization time error does not exceed 2 μ s. The scanning error of picture pixels shall not exceed 1 line.
It is worth noting that in the design and construction of the ground LED display system of the opening ceremony, Leyard Optoelectronic Co.Ltd(300296) introduced the aerospace quality management method. After sufficient testing and verification in the early stage, each LED display module and link cable can stably present the smooth picture effect of ultra-8k HD video in the face of the low temperature of – 20 in winter, the high-intensity rehearsal trampling of actors and the rolling of equipment and machinery, subvert the space structure of the traditional performance stage, realize human screen interaction and create digital multi-dimensional space special effects.
In addition, how to realize reliable, safe and stable power supply for such a super large LED screen is also one of the difficult problems to be solved by Leyard Optoelectronic Co.Ltd(300296) .
You know, the total power consumption of the three display devices on the stage of the opening ceremony is very large. The power load of the main and standby power supply circuits needs 2600kw respectively. The three devices share 52 100kW aviation box distribution cabinets, 534 20kW power distributors and 198000 meters of various wires and cables. Leyard Optoelectronic Co.Ltd(300296) the design team adopted dual power supply and dual power mode in the power distribution system design of LED display screen.
That is, each LED unit box is equipped with two switching power supplies, one for main and one for standby. The working mode of the two power supplies is current sharing and hot standby mode. During normal power supply, each power supply carries 50% of the power load. When one power supply fails, the other power supply can immediately carry 100% of the power load without switching and power-off delay.
Public information shows that Leyard Optoelectronic Co.Ltd(300296) was established on August 21, 1995. It is a high-tech enterprise specializing in the R & D, design, production, sales and service of LED application products.
On January 27, Leyard Optoelectronic Co.Ltd(300296) released the performance forecast for 2021. It is estimated that the annual operating revenue will be 8.8 billion yuan, a year-on-year increase of 32.00%; The net profit attributable to the shareholders of the listed company was 560 million to 720 million yuan, turning losses into profits year-on-year; The net profit after deducting non recurring profits and losses was 500 million to 660 million yuan, which turned losses into profits.
Before the Winter Olympics, Leyard Optoelectronic Co.Ltd(300296) has successively undertaken a number of LED application projects with wide influence, such as the 2008 Beijing Olympic Games, the 50th anniversary celebration of the national day, the 60th anniversary celebration of the national day, the CCTV Spring Festival Gala, the National Games, the T3 terminal of Beijing Capital International Airport, the three major railway stations in Beijing and Beichen Shopping Center.
From the Summer Olympics in 2008 to the Winter Olympics in 2022, we need to withstand both the heat and the cold.
The whole project cycle of the opening ceremony of the Winter Olympic Games spans from summer to winter. In order to ensure the smooth holding of the opening ceremony, Leyard Optoelectronic Co.Ltd(300296) design team researched and developed high-performance LED display modules with waterproof, anti-skid, anti glare and high load according to the complex internal and external environment faced by the on-site application of large-area LED display modules at the opening ceremony, so as to adapt to extreme environments such as outdoor low temperature and freezing. The LED display screen and its components all meet the IP66 protection standard, completely prevent the invasion of foreign objects, and the water inlet of the electric appliance will not have harmful effects when subjected to strong water spray.
The LED ground screen display panel is also equipped with anti glare, anti moire and anti-skid atomization mask, which has a soft display screen and provides a pure video display screen without clutter and interference in the full focus section for camera broadcasting.
At the same time, considering the safety, the design of structural components is mainly made of metal materials, some parts are made of plastic materials with flame retardant grade, and the devices are distributed to ensure uniform heat dissipation and effectively avoid the risk of heat accumulation.
The reporter learned from Leyard Optoelectronic Co.Ltd(300296) that before the opening ceremony, the staff tested the tolerance of the system through many drills, testing and adjusting the system, frequent installation and disassembly.
In addition, at the opening ceremony of the Winter Olympics, Leyard Optoelectronic Co.Ltd(300296) also used system four backup and pixel four backup for the first time to ensure foolproof.
In addition to the technical support at the opening ceremony, from the competition venues to the news center and media center, Leyard Optoelectronic Co.Ltd(300296) uses ultra-high definition display products and technologies to provide visual services and guarantee for all links inside and outside the Winter Olympic Stadium.
It is reported that in order to better bring the immersive viewing experience to the audience and promote the implementation of the “100 cities and 1000 screens” activity, Beijing has built 18 8K ultra-high definition displays to provide event broadcasting services in commercial complexes such as Badaling Great Wall, Shougang Park, contemporary mall, Pinggu Jinhai lake, Yizhuang Han nationality Plaza and Wangjing Fangheng shopping center, Leyard Optoelectronic Co.Ltd(300296) provide 9 8K display products and technical support.
The 21st Century Business Herald reporter learned that the 8K ultra-high definition display provided by Leyard Optoelectronic Co.Ltd(300296) mainly adopts self-developed small spacing products and transparent screen products to ensure the sense of science and technology and multi perspective visualization of the screen.
