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Intel links many screens into a giant, wireless display

James Niccolai | June 26, 2013
The so-called Display as a Service technology turns a wall of displays into a single giant screen.

Intel's Display as a Service technology lets several screens act as one
Intel's Display as a Service technology lets several screens act as one.

Intel has shown a wireless technology it's cooking up in its labs that's supposed to make displays of all kinds more flexible and useful.

The technology allows a single screen image, such as a video playing on a laptop, to be shown on a whole wall of displays all working in unison, so that a piece of the original image is shown on each display.

That type of setup is sometimes used at concerts to show a large image of the action on stage, or in a department store for advertising. But the displays typically must be connected with a jumble of HDMI or DVI video cables.

Intel's technology works wirelessly. It essentially "virtualizes" the pixels on a display, separating them from the underlying hardware so that they can be sent via Wi-Fi and reassembled on other screens for viewing. Intel calls the technology Display as a Service, or DaaS, and it was one of several projects on show at an Intel research event in San Francisco on Tuesday.

Technologies exist today that can mirror a display wirelessly onto another screen. They include Intel's own WiDi (Wireless Display Interface). But those systems can connect only two screens, while DaaS can operate among a potentially limitless number of screens, said Greg Leeming, program director for the Intel Visual Computing Institute.

As well as taking the image on one display and breaking it up across multiple other screens, DaaS can also work in the reverse fashion -- taking the displays from several laptops and showing them side by side on a single, larger screen. That might be useful for collaborating at work, according to Intel. Four people could walk into a conference room and each have their laptop display appear on a big TV screen, for example, so they could all see what's on each other's computers.

In both cases, the technology uses the H.264 video compression standard to compress what's on a display so that it can then be sent wirelessly to other screens. It also uses Internet Protocol-based networking software to tell the video where to send itself across the network and how to reassemble itself.

The software includes additional metadata that tells the video things like how many screens it will be displayed on and how they are spaced relative to each other, so that the resulting image appears as a coherent whole, without gaps or distortion.

DaaS is a joint project of the Intel Visual Computing Institute, the German Research Center for Artificial Intelligence (DFKI) and the Computer Graphics and Telecommunication chairs at Germany's Saarland University.

 

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