Weak current College】 【multi-screen display card in the multi-screen applications of three.

Multi-screen display card to ordinary multi-screen/multi-screen display card to projection is it sew concatenation (edge fusion edge-blending)/multi-screen display card is applied to large rear projection display wall
I. ordinary multi-screen
Display the normal stitching applications is very wide and apply to the need to monitor displays a large number of graphic information applications, such as in financial and energy trading industry, public information displays, video walls, logistics and distribution control center, air traffic control center (ATC), flight and other transportation information display, digital menu display, process control, medical imaging display, power industry (such as power plants, hydro, power, power monitoring), safety emergency control centres (such as 110 command center, road monitoring center, fire command center), etc. The screen can be rotated to fit special programmes. You can set the screen display is the same clone mode. Can be set to the extension of the screen. You can support the TV output of mosaic.
Second, the projection is it sew concatenation (edge fusion edge-blending)
With the large display market demand growth projection of seamless splicing technology more and more users, widely used in large display, venue, virtual labs, and other environments. Projection mosaics designed two:
Increase the screen size to the number of times the single screen projection of maximum size;
In this size above show more and more sophisticated content.
In both of these purposes on the basis of implementation will vary according to the concatenation of seams (black gap or overlap on routes) deleted.
Edge integration seamless splicing implementation requires two steps:
The first step, the edge overlay (edgeoverlapping), the adjacent screen splicing part part of overlapping processing;
The second step, edge overlay part of blanking (edgefeathering), overlay part than the surrounding high brightness, no hidden place to splice. Traditional solutions have several (up to three screen 3x1 mosaic as an example): first, the standard VGA signal replication into three output (through a similar transformation device screen reader) and then enter the three projectors, each projector only output displays information about a third of them, then appropriately overlay tiles, then disappears. This scheme can be at a relatively low investment on the basis of a seamless mosaic, but will greatly reduce the resolution, it is the essence of ordinary VGA signal forced after the concatenation is very low resolution, each line of pixels can only achieve around 1000 points. Second, use the external edge fusion machine. Fusion machine functions is the three-screen content as part of the stack and no output.
This programme is now more applications, but the disadvantage of the programme is twofold:
A need for each application software to do split-screen, overlay feature development, customer application is very limited;
Second, the cost is very high, Fusion machine general price to hundreds of thousands of dollars.
Third, we're now at a recommended, use professional matrox overlay output card system, directly output through hardware overlay processed three screen output signal to with no hidden function integration projector.
Implementation is very simple, each screen output resolution (the actual amount of information that can be displayed) can reach the limits of existing projector, if the projector is set to 1024 x 768 output, mosaic after each row pixels up to 3000 meters (minus the Overlays section pixels). Furthermore, the customer's use is not subject to the limitations of software development, and even do not need to develop any application software that uses a generic software.
Third, the large rear projection display wall
In some large screen, and you need a high resolution applications can use rear projection display wall solutions, rear projection box stack matrix mosaic