Intergrating Video Wall Technology - Data Display Walls, Control Room Videowall by Mitsubishi MegaView

Integrating Video Wall Technology

Ergonomic Basics

In order to reap the full benefits of a display wall, its ergonomics must be considered. For example, Additive Resolution demonstrates that more pixel real estate creates more room to display information. However, that does not take into account the legibility of the information seen on that display wall.

The concepts of text legibility and screen brightness are critical components to successfully integrating large format display technology into an operations center.

Selecting Resolution for Room Size

A standard eye chart found in a doctor's office helps demonstrate the significance of legibility on a display wall. Obviously, some rows are more legible than others. The first row, "E", is very easy to read while the bottom row is much more difficult and requires more effort to comprehend.

The ease of reading text from a long distance directly relates to the size of that text. Since a 12 pt font is equal to 16 pixels, the resolution of the projection cube will directly relate to how large the text is. The images below represent the difference in text size on a XGA resolution display versus a SXGA+ resolution display.

Clearly the texts in the two boxes are different sizes, although the font pitch is the same. When viewing this text on a monitor both text sizes are legible, however as you move further back notice that the text size in relation to the higher resolution display is more difficult to read. That's why displaying too much information on a display wall can strain operators too much.

Mitsubishi can help you define the appropriate display resolution for your environment.