In the video surveillance products experienced analog era, the digital era, the era of network development, has now gradually into the HD era. "Let us see more clearly" is no longer a concept, but the emergence of HD products can greatly enhance the application value of video surveillance systems for video surveillance industry to bring a broader space for development, we usually tend to extend to high-definition monitor million million pixels camera discussion, in fact, high-definition output device also essential, like with phone 1080P video, like, can not play high-definition advantage.
In analog surveillance, analog cameras are usually high resolution 625TVL, when transmitted to the back-end equipment DVR, DVR capture chip inside can only handle up to 768X576 pixels resolution, so the maximum theoretical resolution analog cameras only 400,000 pixels or so, the real definition is only two to three million pixel level, so we never worried about monitor problems, because basically CRT monitors can reach 600TVL level above. And we look at the pure digital high-definition video camera, you can do one million HD 720P (1280X720), two million 1080P (1920X1080), or even hundreds of millions of pixels, far more than the current resolution limit of CRT monitors.

LCD splicing technology is to achieve a favorable means of ultra-high-definition monitor
With advances in technology, a huge CRT market gradually began to emerge, followed substituted for the liquid crystal display LCD products, and the slow pace of the monitor although some areas, but we believe this is the ultimate development goal monitor, especially HD monitoring the rapid development while driving the rapid rise of the LCD monitor products. Here we analyze the difference between the two:
Using a cathode-ray tube (CRT) color monitor and use the LCD display (LCD) color monitor to reproduce the image on the principle of distinction is that the former uses magnetic deflection field scanning line drive to achieve the way, while the latter uses point Array-driven approach. Thus the former is often used to define its definition TV lines, the latter through the number of pixels to define its resolution.
The resolution CRT monitor main channel bandwidth and the CRT monitor and convergence error determines the pitch, which is used by the number of pixels of the LCD screen determined. CRT monitors with low price, high brightness, wide viewing angle, high service life advantages, while the LCD monitor is small size, light weight, no radiation image flicker advantages, but the main drawback is that the LCD monitor cost high, narrow viewing angle, short life) and other shortcomings. Be sure: the price, perspectives and life is affecting the popularity of the three major bottlenecks in the LCD monitor. But as the technology matures, LCD with high brightness, high contrast, elegant design and environmental characteristics unique advantage is gradually replacing the old CRT monitors. Compared with CRT monitors, LCD monitors with energy-saving, low radiation, space-saving features to highlight only cheap CRT monitors can match the size of the market rapidly diminishing. Regardless of any form of picture content, the LCD monitor can bring accurate and brilliant images, making it the best choice for video monitoring.
Although the current high-end CRT monitors have 1250 lines even higher results, about nearly two megapixels network camera effects, but for high-definition monitor, remains inadequate and those professional fields hundreds of millions pixel camera is enough to make CRT shame, large screen CRT processing difficulties, LCD splicing technology precisely to solve this problem, some people say that CRT can do stitching, but because the border is wider, the actual results reflect very limited, mainly used for multi-screen management. With the LCD screen has done more and more narrow margin, and then based on the high-resolution, high-brightness, high color saturation, flexible tiled display combinations, environmental health, long life, low maintenance cost advantages function, LCD In the field of large-screen high-definition more and more applications.