Large screen display system

Large screen display system

The large screen display system is widely used in communication, power, and military command institutions, providing shared information, decision support, and situational displayBSVLCD splicing and segmentation play an important role in displaying images. The following introduces the main principles and precautions in the design and equipment selection of large screen display systems for readers' reference. The large screen display system is a multimedia interactive system that integrates multiple information reception, processing, and display, as well as various personnel operation and control. It involves technical issues in sound, light, and electricity, as well as management and coordination issues with relevant departments. It is also closely related to the overall structure of the display hall. It must pay attention to demand first, overall planning, and the use of comprehensive integration technology in order to achieve the expected results.　　

Main functions and requirements The design of a large screen display system first needs to propose requirements, and the following are the general main functions and requirements.

（1）Information reception The system should not only be able to receiveVGA、RGBNetwork computer information should also be able to receive broadband voice and video signals and perform appropriate information conversion as needed. 　　
（2）Information display The system can publish shared information in multimedia form, and display situational, textual, tabular, and video image information in different modes and according to divided areas. Require clear and high-resolution situation display, with clear and stable text and image display.BSVLCD splicing technology has achieved system window roaming and picture in picture functions. 　　
（3）Preview, Camera, and Switching To ensure the accuracy and quality of projection display information, the system must have a preview function for image preview. A camera should be installed in the display hall to extract video images of the management and control mechanism's work. The system should have a switching display function to meet the needs of displaying multiple information channels. 　　
（4）Video conference call The system can use monitoring, preview, switching, communication, and terminal control devices to maintain video communication with relevant parties and hold video conferences at any time. 　　
（5）Control method The system allows leaders, business staff, and security personnel to perform operations such as turning on and off the large screen, opening windows, selecting sources, projecting displays, adjusting audio and lighting through centralized control, mobile control, and authorization control. 　　
（6）Optimize design according to standards The system equipment configuration is complex, the cable signals are numerous, and the installation process and environmental conditions require high standards. Therefore, engineering wiring and equipment installation should be carried out in accordance with machine line standardization, electromagnetic compatibility standards, and large screen installation requirements to ensure the long-term stable operation of the system.
achieveDLPThe technology of displaying ultimate colors through large screen projection
Firstly, oneRGBIn the chromaticity space, from black to white, each vertex represents a certain color. In this chromaticity space, through3DThe lookup table takes the entireRGBThe three-dimensional space is decomposed into many small cubes. When we process any color, we will find its position and locate it in some small cube3DOverlay the required gain in space. For any input in the red, green, or blue channels, we have an expected output value, which creates a corresponding relationship. By searching throughout the entire three-dimensional space, one will know what kind of gain is required to correspond to it. What are the performance improvements of a six color wheel compared to a three color wheel? Firstly, let's take a look at the middle color. Apart fromRGBIn the triangle of the color gamut, any middle part actually has a direct relationship with the representation of the middle color. The ultimate color technology can enhance the brightness and saturation of the entire middle tone, which is due to the use of different complementary color segments. In addition, the design of the entire color wheel is more flexible and versatile becauseOEMManufacturers can design what kind of color wheel they need based on the actual product positioning. For example, business models may use yellow and white to enhance brightness performance; Household models may have less white, or even no white, and instead add yellow, cyan, and magenta to enhance color expression. These designs will ultimately result in significant color changes. Therefore, different projectors on the market have different color wheel designs,OEMManufacturers have great flexibility in design. 　　

Nowadays, differentDMDChips can be equipped with extreme color technology, which has been applied to various resolutionsDLPInside the projector. Overall, the emergence of extreme color technology has greatly improved the utilization efficiency of the entire color wheel3Chip typeDLPBefore the significant price reduction of projectors, the popularization of extreme color technology had far-reaching significance.It is worth mentioning that high contrast can also enhance color performance. Contrast is related to the expression of images in terms of hierarchy and details. Rich color combinations, clear lines, and rich details can provide a sense of being in front of or behind the user's seat. Generally speaking,DLPThe original contrast of the projector should be at least2000:1Above, the dynamic contrast can exceed10,000:1. 　　

2007In the year, there were over70Featuring ultimate colorsDLPThe introduction of projectors into the market has attracted great attention in the projector industry. In the coming years,DLPThe ultimate color technology will still beDLPThe absolute backing of projectors in color expression. As more and more projectors with extreme color technology are launched on the market, projectors will also enter a new era of multi-color processing from traditional three color processing.