Solution for LCD panel assembly

When designing the LCD mosaic large-screen display system, based on the basic requirements of the user unit for the system, with the rationality of the architecture, high reliability of operation, mainstream nature of the product, and cost rationality as the starting point, an advanced, safe, reliable, and efficient system solution is provided. The system is convenient for use and maintenance, with advanced equipment, reliable operation, easy expansion; under the premise of low cost, it fully meets the various needs of users in terms of image quality, line transmission, image processing, signal control, etc.
1. The system complies with the relevant standards of relevant departments;
2. Under the premise of ensuring quality, protect system investment and low operating costs, and save the total investment of users;
3. It has extremely high reliability performance, ensuring the safe operation of the system;
4. It is adapted to real-time monitoring and management of the work site;
5. The image is clear, and the control is flexible;
6. The structure is flexible, and it provides complete compatibility support for other standard equipment;
7. Ensure to meet the future demand for the growth of monitoring points; This system construction is based on the on-site investigation of the station, and decides to adopt the principle of strict control for passenger flow and personnel operations, that is: implement maximum area monitoring at locations such as passenger flow channels, waiting rooms, platforms, overpasses, ticketing, luggage, entry and exit, ticket checking, station square, underground passages, rain shelters, finance, duty personnel rest rooms, etc. to ensure that the system implementation forms a unified coordinated performance of the entire station, and guarantees the strictness, real-time, and uninterrupted monitoring of each part. In the design of the defense points, efforts are made to achieve no blind spots in key areas and make illegal and disorderly behavior impossible to hide.
After the front-end camera collects the video signal, it is transmitted through optical fiber to the control center, and the video signal is divided into two by the video distributor. One path enters the video switching matrix, and through the operation of the matrix keyboard, the image is displayed on the TV wall. Each controlled monitor can display any one path of graphics and can achieve manual switching, program switching, group switching, round-robin switching, and timed switching and other graphic switching methods.
The control signals of the cloud platform and lens of the matrix are transmitted through the protocol adapter and control cable to the decoder at the front end to operate the actions of the cloud platform and lens.
And the other video signal enters the hard disk recorder for data storage. And it is displayed in real time on a 17-inch monitor. 1. Image processing and expansion function
The external mosaic processor adopts a professional image processing switching module, based on the FPGA hardware architecture, hardware parallel processing technology and high-speed digital signal switching system. It does not rely on the system bus and adopts parallel high-speed graphic processing technology, achieving unified processing of multiple signals, with high processing efficiency. It supports up to 128 channels of VGA signals for real-time display and 128 channels of composite video for real-time display, meeting the arbitrary mosaic combination expansion of customers.
2. Arbitrary picture combination mosaic function
It has multiple arbitrary picture combination mosaic modes, and the maximum can be expanded to 15 rows and 15 columns combination mosaic, and can switch and combine each unit arbitrarily.
3. High bandwidth, large signal input capacity
A single device can achieve up to 72 high-definition inputs and 72 high-definition outputs. Ordinary video input can be realized by a single device with 256 inputs. Each output card has 10GB, and the input card has 4GB independent bandwidth. When 144 high-definition signal windows of 1920×1080 are opened simultaneously, there is no frame skipping and no delay. It can achieve the collaborative work of 4 devices, ensuring full synchronization and real-time performance to achieve 288-channel mosaic wall.
4. Multiple input interfaces
It has multiple signal input interfaces, such as DVI/AV/S terminals/YPBPR/HDMI/VGA. When users face the selection of screens, they may have many doubts. For different application environments, 7 screen selection standards are provided.
1. Video projector type CRT Technology: CRT projectors are what we commonly refer to as three-projector projectors, consisting of three projection tubes. CRT projectors decompose the input signal source onto the fluorescent screens of the R (red), G (green), and B (blue) CRT tubes. Under the action of high voltage, the light signals are amplified, converged, and displayed on a large screen as a colored image. These projectors have the characteristics of rich image colors and high resolution, but their drawback is that the brightness is usually relatively low.
LCD Technology: LCD technology uses traditional light sources, usually metal halide lamps. The red, green, and blue primary colors of light are accomplished by three separate liquid crystal plates. The primary colors of light almost reach the screen simultaneously to form an image.
DLP Technology: The full English name of DLP is Digital Light Processor, which means "digital light path processor". This technology is a patented technology developed by Texas Instruments in the United States. It is a projection technology using DMD (Digital Micromirror Device) as the imaging device. It utilizes digital micromirrors as the light valve imaging device. Even a single DMD is composed of many micromirrors, and the physical resolution of the DLP projector is determined by the number of micromirrors. Many small micromirrors are combined to form the DMD, and each micromirror reflects the picture, representing one pixel.
D-ILA Technology: D-ILA is a direct drive image light source amplifier technology. Its core component is the reflective active matrix silicon-on-silicon liquid crystal panel, which is also commonly known as the reflective liquid crystal panel (LCOS). Therefore, this technology is called reflective liquid crystal technology in the industry. The advantage of this technology is high brightness and contrast.
LCOS Technology: This projection technology uses a CMOS integrated circuit chip coated with liquid crystal silicon as the reflective LCD substrate. After being ground with advanced technology and plated with aluminum as a reflector, a CMOS substrate is formed. Then, the CMOS substrate is adhered to a glass substrate with transparent electrodes on top, and then liquid crystal is injected and encapsulated. LCOS places the control circuit behind the display device, which can improve light transmittance, thereby achieving greater light output and higher resolution.
35mm Slide Projector: This technology is one of the most common projection methods when displaying a single image. Like other portable film projection methods, slides can be continuously played, and the output brightness of the projector is also very high (from 1000 to 6000 lumens), capable of projecting very perfect picture details and rich colors.
High Projection
In business and educational applications, high projection is also a common projection method. It is flexible to install, easy to use, and has a brightness output of up to 3000 lumens. Speakers can use it according to their own preferences.
3D Projection
3D projection technology is achieved using light polarization. Stereoscopic projection has high requirements for the polarization of the screen and also has high requirements for the gain of the screen. Some front projection screens can also affect the polarization effect. In some special video projection application environments, due to the influence of environmental light, a relatively higher contrast is required, so in such applications, it is best to use curved projection screens.