"The Great Journey", a large-scale scenario epic that condenses the glorious history of our party for a hundred years, each program is only 3 minutes to 5 minutes on average, and a major event is only 1 minute on average, to cover rich content in such a short period of time, it is necessary to go beyond the traditional two-dimensional spatial expression. And in the three-dimensional space formed by the large screen pry, there are still too many stories that are invisible on the stage...
From the following sets of data, what we see is the rise and take-off of China's technological power .
LED large screen installation, monitoring and commissioning
377,229,312 lamp beads, "national production", independent and controllable
Almost all of the teams involved in the visual effect guarantee of this theatrical performance are "regulars" and "veterans" who participated in large-scale activities, most of whom participated in the 2008 Beijing Olympic Games. Looking back at the historical picture, the LED scroll with a length of 147 meters and a width of 22 meters at the opening ceremony of the Beijing Olympic Games won the world's hot reviews. At that time, most of the LED lamp beads used came from overseas.
Today, the "Bird's Nest" is once again celebrating the prosperity of the world. The screen requirements of "The Great Journey" are higher and the product supply is greater. This time, unlike more than 10 years ago, the 377, 229, 312 lamp beads used in the huge screen, as well as the driver IC, are all domestic products.
At the same time, the autonomous control system owned by the large screen has long broken through the past visual effect assurance system: on the one hand, most of the products in the past were single-powered and single-system loop backup. This time, in order to ensure the smooth operation of the screen in real time, Leyard Group adopts a newly optimized die-cast aluminum box, which is equipped with the original dual-card dual-loop backup and pixel cross-backup technology, and the screen body has dual power supply input and output, dual signal input and output. The power supply bureau provides two power supply systems at the same time, and the two sets of playback systems in the broadcast control room provide signal sources, which can ensure that any signal error and damage to any lamp bead will not affect the transmission and display effect of the overall video signal.
On the other hand, the use of the national production of four-way 4K broadcast control system, the biggest advantage is the multi-line frame synchronization technology. Its nanosecond synchronous clock ensures that the ultra-large video is split into multiple devices for playback, achieving seamless output on the screen, opening a new chapter in the use of the domestic broadcast control system in major national events.
"At present, LED display technology is mainly divided into ordinary LEDs, small-pitch LEDs, Mini LEDs and Micro LEDs. Since 2015, benefiting from the construction of smart cities, the development of night tourism economy and cultural and entertainment industries, small-pitch LEDs have ushered in a peak of development. Up to now, Mini/Micro LED ultra-high-definition display has been mass-produced. The products and technologies produced throughout the country are also the best gifts we can give to the centenary of the Communist Party of China. Li Jun, chairman of Leyard Group, introduced that these displays have a large viewing angle, high contrast, high color gamut, and high grayscale performance, which is considered to be a new direction for the future development of the industry.
Withstand the baptism of heavy rain, windproof, rainproof, high temperature
In the third chapter of "The Great Journey", "Rapids and Courageous Advances", the scene dance "The Party Flag in My Heart" shows that under the leadership of the Communist Party of China, the people of the whole country have worked hard with one heart and one mind to achieve great victories in the fight against SARS, earthquake relief and disaster relief.
In the CCTV broadcast footage, when showing the officers and men of the armed police and volunteers rushing to rescue and rescue the disaster, the ruins on the background board were shrouded in wind and rain, the actors danced in the rainstorm, and the bright party flag was displayed in the face of the wind and rain, vividly interpreting the spirit of the Chinese people who never gave up and forged ahead in the face of difficulties, touching hundreds of millions of viewers.
It turned out that this "stroke of genius" was not a stage setting, but a real rainstorm in the performance on June 25, with an instantaneous rainfall of up to 50 mm that night. The stage was restored after a brief water removal operation. The actors were not affected by the wind and rain and insisted on completing the performance with high quality.
Also baptized are huge screens. Why is this set of high-tech equipment stable in the rain? With this question, the reporter walked into the screen operation area and learned that in the preparation stage of the plan, the security and construction party has fully taken into account the changeable weather in the middle of summer in Beijing and the characteristics of the outdoor use environment. Leyard adjusted the front and back ratings of the screen to a high standard, reaching IP65 (referring to complete dustproof and preventing the intrusion of water from spraying), in order to ensure the stability of the screen structure and display effect under the influence of heavy rain, strong wind (including gusts of wind above level 8), high temperature exposure, thermal expansion and contraction, etc.
The same venue, the same visual effects service provider, the new technology integration and artistic presentation - across history, to 2021, quietly standing in the bird's nest of this giant screen worthy of the title of the world's most "Chinese screen". At present, the bird's nest screen has been removed. With this as a representative, China's performing arts technology will also open a new "great journey".
(Images in this article provided by the interviewee)
Source: China Culture Daily