1. Project overview
With the rapid development of information technology, certain studios have higher and higher requirements for information display. They are eager to use the current Z advanced large-screen splicing display technology to integrate computer graphic information and video signals of various monitoring systems. Perform centralized display and build an efficient and convenient video information exchange platform to meet its own real-time scheduling, consultation, decision-making and information feedback needs.
According to the actual use requirements and physical environment of a certain studio, we designed a complete DID LCD wall system solution (Digital Intelligence Display, digital professional screen display), combining the international Z excellent high-definition digital display technology, DID LCD Splicing technology, multi-screen image processing technology, multi-channel signal switching technology, network technology, centralized control technology and other applications are integrated, making the whole system a large LCD screen with high brightness, high definition and high intelligent control. display system.
2. Design goals
The overall goal of the construction of the large-screen splicing display system is: the system fully considers the principles of advancement, reliability, economy, scalability, maintainability, and management, and builds a set of advanced and mature technologies, following excellent layout design, The equipment application is reasonable, the interface is friendly and simple, the functions are orderly and practical, and the large-screen LCD splicing system with good upgradeability can meet the needs of users for large-screen image and data display.
In this system, our company tailored a 3 rows and 3 columns 46-inch LCD splicing large-screen display solution for a certain studio. This solution combines current Z advanced image processing and control technology to meet the requirements of users in various industries.
3. Technical specifications and standards referenced by the design
The overall design and equipment selected by our company for the entire system comply with ISO (International Organization for Standardization), IEC (International Electrotechnical Commission), ITU-T (International Telecommunication Union), IEEE (Institute of Electrical and Electronics Engineers), GB (National Standards Committee), CCITT and other industry standards.
Four, design principles
4.1 principle of advanced nature
A large-screen LCD display unit of a company not only has excellent display characteristics, such as high brightness, high contrast, high resolution, wide viewing angle, uniform brightness and color, but also has large size, excellent display quality, low cost per unit area, and long service life And other characteristics, fully reflect the development level of today's display technology, to ensure that the system has a high level of advancement.
The large-screen LCD display unit can not only directly input RGB signals, Video (BNC) signals, YPbPr signals, S-Video signals, DVI signals, HDMI signals, but also can perform splicing display of multiple signal sources through the splicing control system. If the signal is switched with the matrix, the system can realize the simultaneous input of multiple signals, and arbitrarily select one signal to display on any single screen on the large screen. In addition, the system adopts an all-Chinese control interface, which is not only easy and intuitive to operate, but also has powerful display control functions.
A large-screen splicing control system of a certain company uses unique image splicing processing technology, and the combined large screen of 3 rows3 columns can operate continuously, safely and stably for a long time, and will never cause image damage or distortion.
4.2 Principle of Reliability
When designing the system, high-reliability equipment is selected for key parts, and Z advanced high-tech guarantees are used for important control nodes. The whole system can realize 724 hours, 365 days a year continuous trouble-free work, with high reliability, high stability and other characteristics.
The viewing angle of a company's LCD splicing display unit completely reaches 178 degrees in both horizontal and vertical directions, so the display quality can be guaranteed at any angle. Due to the special working principle, the response time of a large LCD splicing unit of a certain company is extremely short and almost completely free from external electromagnetic field interference, and the operation is more stable, and the same effect can be maintained from the beginning of use to the display several years later. The passive light-emitting characteristic also makes the liquid crystal have the advantages of high brightness, high contrast, good color reproduction, clear picture, no burns, and extremely high resolution, giving a company's LCD splicing display unit a unique advantage in the field of large-screen display.
4.3 Economic principles
Reasonable cost performance is an important content that should be considered in system design. Therefore, the selected equipment should also consider economy on the basis of taking into account the good performance. In addition to considering the overall cost of the system, the long-term operation and maintenance cost of the system should also be considered. Due to the high system stability of the LCD splicing system, the maintenance cost of the entire system during operation is very low.
4.4 The principle of scalability
With the development of technology and the expansion of demand, the expansion of the system is inevitable, so the feasibility of future system expansion is fully considered in the system design. A certain company's mosaic display system adopts a modular design, which can not only realize the expansion needs of users, but also realize the full use of early-stage equipment, which fully guarantees the users' early-stage investment.
4.5 Principles of maintainability and manageability
From the user's point of view, we fully consider the needs of system equipment installation, configuration, and convenient operation, and provide powerful system management methods, reasonable configuration and adjustment of system load, monitoring of system status, and stable operation of control system.
Five, system composition
The large LCD splicing display wall consists of a set of 3 (rows)3 (columns) 46″ (LED) ultra-narrow-edge LCD screen. The size characteristics are as follows:
Single screen size: 1024mm(W)x593.3mm (H) x 144mm(D) (unit: mm)
Combined size: (593.3mm 3) (1024mm 3)
Base height: the actual height is determined according to the user's site
Rear maintenance space: default 1000mm, the actual space is determined according to the user's site and the height of the wall
Six, detailed design
6.1 System topology
The entire large screen system can be divided into the following parts:
Front-end system: The large-screen display system of a company supports the access of various types of signals, such as: analog SD cameras, high-definition digital cameras, high-definition analog cameras, network high-definition standard-definition cameras, etc. In addition to accessing remote cameras, it can also be connected Import the local VGA signal and DVD signal, etc., to meet the user's access to all signal types.
Transmission control system: After the front-end camera signal is connected, it can realize long-distance transmission through IP network, optical transceiver and other means. By installing splicing control software on the control host, the entire large-screen display system can be controlled and operated, and the display signal on the wall can be realized. Choice and control.
Display system: The large-screen splicing display system supports the access display of various signals such as BNC, DVI, VGA, HDMI, etc. The signal that has been selected to be displayed on the wall is displayed through the control software, and the full-screen display of the signal can be realized through the splicing controller , Arbitrary segmentation, window roaming, image overlay, arbitrary combination display, image stretching and zooming, and a series of functions.
6.2 System effect
