Audiovisual technology: A short history of the videowall

Blooloop: The videowall emerged in the early 1980s. Whether it originated in Europe, the USA or Japan is a matter of debate, but two factors affected what was achieved. First was the fact that early videowalls were all based on standard CRT (Cathode Ray Tube) monitors, typically 28 inch diagonal, with the resulting large gap between image sections. Second was the difficulty of achieving the “image split”, that is the means by which a single input video signal could be split into, say, 16 separate image signals to produce one large image on a 4 × 4 array of monitors.