Introduction
On the evening of February 4, the opening ceremony of the Beijing 2022 Winter Olympics was held at the National Stadium Bird's Nest. Countless wonderful moments have swept the screen on the Internet, and many national media and media people believe that the opening ceremony is full of beautiful and unforgettable moments, and behind the stunning eyes is the support of innovative technology.
How is the snowflake-type main torch stand developed and manufactured at the opening ceremony of the Winter Olympics?
How amazing is the world's largest 8K Ultra HD terrestrial display?
So many actors stepping on the screen, how to prevent black screen damage, what are the special treatments?
What are the advantages of the 10-second card making of the electronic badge of the Winter Olympic volunteers over the traditional documents?
Beijing Traffic Radio's "Liane-e-Club" program invites experts in related fields to reveal the "black technology" of the opening ceremony screen of the Winter Olympics!
Snowflake main torch stand
When the huge "snowflake" shaped main torch stand shone slowly into the air, accompanied by the ignition of the sacred flame, the atmosphere of the opening ceremony was pushed to a climax, and the audience around the world was amazed by its aesthetic romance. The unprecedented snowflake form of the main torch platform at the opening ceremony of this year, whether it is the overall hardware support or the software system, is independently developed and designed by BOE.
Jing Linfeng, senior vice president of BOE and co-CEO of the intelligent system innovation cause, introduced in the program that the main torch stand has a diameter of 14.89 meters, consisting of 96 small snowflakes and 6 olive branch forms of LED double-sided screen ideas, using double-sided hollow design, embedded with more than 550,000 LED lamp beads, each lamp bead is independently controlled by a single channel of the drive chip.
How to achieve the sparkling effect of the torch stand
In order to realize the artistic concept of the director group's "snowflakes shining like diamonds", BOE adopted a double-sided hollow design, so that the weight of each small snowflake screen was only 1.8kg, achieving the effect of "looking light" and "strong to use". At the same time, under the premise of not affecting the brightness ≥ 1000nit, the glossy surface of small snowflakes is required to be as narrow as possible and the display should be sharp.
How to control the light waves that spread outward from the center when the torch is lit?
When the torch is placed in the center of the snowflake, the giant snowflake screen radiates from the center to the surrounding area, emitting a brilliant light that progresses like a wave.
Leng Changlin, deputy technical commander of the BOE Winter Olympics project team, introduced in the program that behind this rapid transformation and perfect synchronization of the display screen, the BOE AIoT technology system and the self-developed same/asynchronous compatible letter and delivery system are adopted. Asynchronous centralized control can quickly deliver large-scale video content in a very short period of time, and synchronous centralized control ensures that 102 double-sided screens achieve millisecond-level response.
The world's largest 8K Ultra HD terrestrial
At the opening ceremony of the Beijing Winter Olympic Games, the huge LED stage surprised the world, not only the area set a record in the world, but also the characteristics of snowproof, anti-freeze, stability and pressure resistance.
The opening ceremony "ground display system" not only to achieve 8K ultra-high-definition video playback visual experience, but also to meet the stage wear resistance, structural load-bearing, waterproof and cold protection and electrical safety and other characteristics, which put forward high requirements for the performance of the ground screen.
How ultra-high resolution ultra-high-definition images are presented
The stage floor of the opening ceremony is currently the largest 8K ultra-high-definition ground display system, with an overall area of 10393 square meters, using a number of 8K+ resolution picture fusion technology, equivalent to several 8K ultra-high-definition large screens put together, its visual effects can reach 16K or even higher.
Not only that, but also the use of ultra-large-scale optical correction algorithm, can be a pixel-level optical correction of each display screen, to achieve 100000:1 ultra-high contrast, 3840Hz ultra-high brush rate, and 29900x15096 ultra-high resolution ultra-high-definition brilliant picture.
How to ensure the interaction effect between the actors and the ground screen?
The glittering stage also allows for real-time interaction with actors' performances. Capture the trajectory of the actors in real time to achieve seamless interaction between the picture and the actors, which is also inseparable from strong technical support.
According to Jing Linfeng, the actor and screen synchronization performance needs to be faster and smoother, based on the BOE AIoT technology system and the industry-leading soft and hardware fusion technology, the super large-scale display module control and synchronization system is embedded in the "super screen". Through the ultra-high-speed single-mode optical fiber encryption signal transmission and fast codec algorithm, the entire signal transmission delay is less than 32ms, which achieves the effect of no delay in visual and shooting.
Through the clock synchronization mechanism, system delay problems such as frame skipping, stuttering, flickering, and jitter are avoided. The application of these technologies greatly guarantees the interaction effect between the actors and the ground screen.
How to prevent black screen damage?
Leng Changlin introduced that due to the large number of screens, in order to prevent unexpected situations such as black screens and failures, a multi-link main and backup redundant system scheme is adopted in the design to ensure the stability and reliability of the overall display system at all times. The overall ground display system in the control system, playback system, power system, power system to achieve "four backups", any primary and standby system can be quickly combined and seamless switching.
Little badge "Hidden Elephant"
Winter Olympic volunteer "wisdom badge" 10-second card making
In the athletes' village in Beijing, the BOE digital badge worn by the volunteers on the chest is also from BOE, which uses an eye-protecting electronic ink screen, which can clearly present black, white and red colors.
The picture is from the official release of | Beijing Yizhuang
Tailor-made intelligent software and a set of artificial intelligence algorithms support the graphic content "massive rapid refresh", can update the display information at any time and efficiently, from card making, card swipe to card to card can be completed in only 10 seconds, while using "passive" design, the use of mobile phone NFC function can communicate and take power, truly realize the green and low-carbon concept.
Looking forward to more important moments in the future
There are these "black technologies" involved
Bring more beautiful new experiences
Content synthesis: "United e-association", network synthesis
Source: Beijing Traffic Radio