A video signal controlling system and method

A video signal controlling system and method are disclosed. The present invention is applied to a display device assembly in a multimedia display environment. An embedded controlling video bridge of a display system control device of the video control system and a video switch of the present invention are applied to adjust the ways of video provision. In addition, the present invention applies a plurality of display data channels (DDCs) to parallel-connecting respectively or series-connecting a serial communication interface (SCI). A screen display area for selecting and adjusting a plurality of intellectual display devices is provided. Plural video contents from multiple sources could be individually partitioned and combined together to flexibly display on display screens of individual display devices of the display device assembly such as the display screens of the display devices arranged in an array constituting a video wall. The present invention enables the display device assembly to be more flexible an