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Datapath x4 video wall controller

07 March 2011

Datapath’s x4 integrated video wall controller and multi display adapter accepts a standard single or dual link DVI video signal up to 4k x 4k resolution and provides four display outputs.

Each output can arbitrarily view any part of the input image and apply frame rate conversion, up scaling, cropping and optional rotation for portrait display formats.

The Datapath x4 enables display wall arrangements for a mixof landscape and portrait display formats. For larger video walls multiple units can be combined together or used with Datapath’s Image4 graphics card to support up to 160 displays.

Each of the four outputs can be driven as DVI or analogue RGB, and can represent an arbitrary crop region of the original input image. The output resolution and frame rate does not need to be related to that of the input as the Datapath x4 will optionally upscale and convert frame rates, each cropped region independently. However, if the Datapath x4 detects that frame rates identically match, it will automatically genlock. Additionally, each output can be independently mirrored or rotated through 90°, 180° or 270° to support creative mixes of landscape and portrait monitors. The unit also supports bezel correction and overlap for edge blending projectors.

Datapath have added active equalisation hardware on the input to the x4 which is able to compensate for losses and support cable lengths, of up to 20m at full dual-link resolutions (330MHz pixel clocks). Lower resolutions will allow longer cable lengths.

The Datapath x4 control application allows user configuration of the equalisation levels.

With 5m output cables from the x4 to the monitors, it is possible to achieve a 25m span from the source to the display.

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