Video display control method, video display processing system, video display processing device and screen display device

Inventive image display processing system, determines the display priority of each image according to the display state of each of the image displayed on the screen in the image display unit, and to determine the resolution of the resolution of each image transformed and each image according to the display priority synthesis method, the transmission through the transmission line to the image input unit resolution and synthesis information of the decision; converting the resolution of each image according to the resolution of the determined image input unit, and the method for synthesizing the determined above were resolution conversion the images into one image, transmission path via the synthesized image; separation in the transfer of the image in the synthesized image to the display unit.