US Patent 8988314 Multi-display system

A multi-display system provided with display devices arranged to form a rectangular video display screen as a whole includes: distributors to which video signals are input; CPUs for detecting the number of input video signals; arrangement determining units for determining a display layout on the video display screen by looking-up a pre-set look-up table using the number of input video signals detected by the CPUs; and display units for displaying an input video image or images on the video display screen, in accordance with the determined display layout and the arrangement of display devices. Thus, the display layout of the multi-display system can automatically be changed in accordance with external environment.