To increase the number of divided display images in comparison with conventional ones and to improve a function about a system which performs multiple divided display of images of plural cameras on one monitor.

When this system consists of two devices that are image processors M1 and N2, a screen divided number and the display position of each image is also designated to a 2nd controlling part 1f of the device M1 through a 2nd controlling part 2f of the device N2 (designation signal S1). The 2nd controlling parts of each device transfer the designation to image processing parts 1b and 2b through 1st controlling parts 1c and 2c. The parts 1b and 2b create a required divided display image signal from a camera image based on the designation. The divided display image signal is sent to switching parts 1h and 2h. On the other hand, a display position signal that corresponds to the divided display image signal that is created by the part 1b is created by a display position signal generating part 1i. The display position signal is sent to the switching part 2h of the device N2 and used as a switching signal. An output of the part 2h is sent to a monitor device 3 and performed multiple divided image display.