How to realize the windowing, roaming, and segment
2022-10-28
When participating in some LCD splicing screen bidding projects, the demand list often has some special requirements for LCD splicing screen display, such as window opening, roaming, superimposed display or how many split displays and other functions should be realized. However, no matter how the LCD splicing screen is spliced, it is just a large display screen, and the main function it undertakes is the screen display, and it depends on the control equipment to achieve more display functions. Common control equipment for windowing, roaming, superimposing, and segmentation display mainly includes splitters, matrices, decoders, external image processors, etc. So how do these display functions and control devices work?
1. Different functions of each control device
Distributor: It can be applied when the signal source has only one computer, and a large screen display is to be realized, or each LCD splicing screen displays the same content.
Matrix: On the basis of the distributor, multiple computer inputs can be realized, and each LCD splicing screen can display a single screen, but it cannot span the screen.
Decoder: including matrix function, at the same time can decode video surveillance images, can achieve single-screen single-screen, single-screen multi-screen segmentation (including 4-way, 9-way, 12-way, 16-way, 32-way, 64-way) display, but can not be cross-screen display, as long as it is a security monitoring display must use a decoder.
Geffen GEFFEN windowed roaming overlay matrix strengthens the signal processing system: it has both matrix and decoding functions, and realizes display functions such as overlay roaming, picture-in-picture, and multi-channel segmentation, making its display effect more powerful.
2. What is windowing, roaming, and overlay functions?
The window function is to display an image on the top of an LCD splicing screen, and can display more than one on a group of screens; roaming refers to the ability to make an image display at any position on the entire screen, and can be dragged freely to achieve the cross-screen function; overlay refers to the display of an image on top of an image, it is a combination of window opening and roaming, that is, to be able to open the window, but also to be able to roam.
This kind of windowing, roaming, and superimposition functions are mostly used in some occasions with more signal sources, such as some command and dispatch centers or security monitoring and other occasions, and sometimes it is necessary to magnify and display a single image, and then the cross-screen function is used.
3. How to achieve it
In order to realize the three functions of windowing, roaming, and superimposing, the general distributor and matrix can not be realized, and can only use an external image processor, Geffen GEFFEN windowing roaming superposition matrix strengthens the signal processing system GF-MPP, which is a very powerful signal processing device, with matrix function, and can decode video surveillance, can realize picture-in-picture, that is, windowing, Overlay function, and at the same time, an image can be roamed and displayed in any position of the entire LCD splicing screen to achieve the cross-screen display function.
In addition to the above three functions, the GF-MPP can also realize 4K display, single-screen segmentation, etc., which can be said to be a combination of matrix and decoder.
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