A small bezel is characteristic for video wall displays. The distance between two neighbouring active areas (A2A) is an important figure and has paramount influence on apperance and cost. A small distance imposes higher costs to the project.
The monitors are equipped with a graphics card especially developed for video wall applications. The daisy-chain cabling simplifies installation. Via HDMI the 4k signals can be forwarded directly from one monitor to the next. The same applies to the control signals via RS232. On a 2x2 wall e.g. one of four quadrants of the 4k image can then be displayed on the full HD monitor.
Further functions are bezel compensation to create a homogeneous picture. The video wall can be set up and configured via the RS232 interface, an IR remote control or the OSD buttons on the monitor.