Introduction to HD Video Walls
When most people think of screens they think in terms of pixels and diagonal measurements. But in the not-too-distant future they will use a new lexicon and a different set of criteria to describe it.
Flat-screen LCDs are no longer just dumb displays. They already are powerful embedded controller in their own right, able to process massive amounts of data and adjust it quickly enough to maximize picture quality. In addition to getting larger, faster, more modular and far more energy efficient, they also will begin to add a new dimension of gap which measured from edge to edge and these screens are already making their way into industry trade shows, but what comes next gets even more interesting. Tilling with multi-display & “daisy chain technology” is one of several approaches to making a large seamless display.
Tiling display or video wall is being used in some of the largest LCD screens today. A better is to create tiles that can fit together almost seamlessly to create a single display by using some fast interconnects and powerful processing.
“It used to be a race to build the largest display, but we ran into problems of how to ship and install those displays,” says LCD industry expert. “Today the emphasis has changed to displays that can be tiled with a super narrow bezel to keep the edge of the display as thin as possible. That allows you to create mega HD displays as big as 100 feet.”
In lock step with that, there also is a push to make the individual tiles more efficient. Rather than using a consistent backlight, LCD designer is working on technology to literally turn off dark sections of the screen to make blacks look blacker and add more power to light areas–all at a speed faster than the human eye can comprehend. Analysts said that will reduce power 50% to 70%. In addition, instead of just red, green and blue subpixels in the display, which combined make white, that reduces power another 50%.
These savings are particularly important as screen sizes grow to entire walls, currently in use by government agencies to enormous map weather patterns, show rooms, & indoor digital signage solutions. The obvious step is to use them into the commercial world. Analyst foresees a growing trend that high-end fashion retailers use an entire wall of screen showing models walking down a runway and exhibiting the latest fashions.
Or maybe a football field. The centerpiece of the Dallas Cowboys stadium is a high-definition screen that stands 72 feet tall and 160 feet wide. The stadium also uses eight stationary cameras and a slew of robotic cameras, as well as some very high-speed controllers in order to be able to change views in an instant or provide “Multi views” simultaneously.
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