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2, digital high-definition With the development of technology, people urgently need a digital high-definition LCD splicing wall, and the traditional composite video interface, VGA interface obviously can not meet such requirements.
At present, there are many interfaces for digital high-definition display, such as HDMI interface for TV and new DiiVA interface, but these digital TV-based interfaces are not suitable for security monitoring, such as interface incompatibility and short transmission distance. .
Digital HD LCD video wall must have HDTV video quality HD video surveillance. Therefore, the adoption of an appropriate interface compatible with existing systems is the key to achieving digital HD. The broadcast-level monitor adopts the HD-SDI interface, which fully meets the development requirements of digital high-definition, and has the advantages of long transmission distance, interface compatibility, standard basis, plug and play, etc. It is an important factor for digital HD video wall to achieve digital high definition. direction.
3, networked video surveillance network is a problem that any company, any product can not ignore. Networked products have many advantages, such as remote transmission, mature network transmission technology, high definition, megapixels, etc., but there are also technical flaws, including packet loss and compression delay. In fact, most of the current security surveillance systems use network transmission. Only in the front-end LCD splicing wall, devices such as digital matrix are used to convert the video transmitted from these networks to video signals, and then display to LCD splicing. On the wall.
From the short-term technical development point of view, it is the process that the network signal is directly on the LCD splicing wall, minus the network digital signal and then converted into an analog signal. In the longer term, it must be digitalized and networked from the front-end camera equipment to the back-end display equipment, completely replacing analog signals from the system.
4, the diversification of control methods The current LCD splicing wall control method is relatively simple, nothing more than the use of controllers or PC computers through the serial port to control, which obviously can not meet the needs of different control modes of different use occasions.
In terms of control, the possible development direction, including the use of network linkage, for example, as long as there is the corresponding authority, in any place that can connect to the Internet, Ethernet and control software can send control commands to the LCD splicing wall. . For example, the remote control device is used, and the liquid crystal splicing wall is equipped with a special remote control device, and the control of the liquid crystal splicing wall can be realized without connecting a computer.
5. The function of the intelligent LCD splicing wall embedded system is more and more powerful, and more intelligent design will be incorporated in the future, making the system operation more convenient and quick.
Intelligent first of all is of course system debugging. The liquid crystal splicing wall is formed by splicing a plurality of liquid crystal splicing units. Since there are differences between the units, it is important to ensure uniform display of unit color and geometry. The traditional approach is to slowly adjust and correct the LCD splicing wall by means of equipment and visual inspection. The intelligent design method is to automatically adjust the original function through one-key automatic adjustment through the system function.
Followed by intelligent monitoring. The advantage of the LCD splicing wall is to display a large picture, such as a high-resolution map and corresponding scenes. When the target is locked, the camera can be automatically switched as the target moves, and the target is always locked in the predetermined display area of ​​the large screen. At the same time, it has the functions of short-time recording and snapping images. Of course, LCD video walling will not and will not record all the video, but in special cases, intelligent short-time video and image capture are very significant.
Of course, intelligent design has many functions, such as face video and capture, cross-line recognition and capture.
6, equipment integrated LCD splicing wall as a dedicated large-screen display equipment, installation and commissioning is an important issue. Thin and thin is an important advantage for other large display devices such as DLP. However, in order to realize the functions of the system, it is often necessary to equip other devices, such as a matrix, a distributor, a connection line, and the like. With the development of technology, the installation structure will become more and more simple, all the equipment will be integrated in each unit, and the unit will be modularized, making installation and debugging will be more and more simple, and finally the integration of equipment.
[ Huaqiang Security Network News ] LCD splicing wall is widely used in the field of video surveillance as a large-screen display device, which realizes the function of splicing and displaying a large picture by multiple liquid crystal display units. In terms of technology development trends, there are mainly the following aspects: 1. Narrow-edge, until seamlessly splicing the LCD splicing wall can not achieve complete seamless splicing is a major defect, in terms of color reproduction, clarity, service life and other technical indicators, LCD splicing walls take advantage These advantages come entirely from the display principle of the liquid crystal itself. For a long period of time in the future, other display devices cannot exceed. So the only remaining problem is the splicing gap. The ultra-narrow LCD splicing screen launched by Color Technology has a seam of only 5.5mm, which basically does not affect the splicing effect. However, based on the goal of excellence and perfect display, the multimedia technology will further enhance the product technology, and once again reduce the stitching gap, providing users with more cost-effective perfect stitching.