To provide a system for reducing oversight of the result of false recognition and improving working efficiency, while realizing the reduction of load of operators, and to provide a method thereof.The system in the invention contains a display unit and a control unit for controlling the display unit, and may display a plurality of unit images in series on the display unit, wherein the display unit includes a first display area and a second display area controlled by the control unit, and the control unit controls so that the display of the unit image on the first display area may differ from the display of the unit image on the second display area in the format thereof. The control unit may be made so as to include a means for adjusting the transferring distance of a plurality of the unit images per unit time. Furthermore, the control unit may be made so as to display the unit images while keeping the unit images stood still for a given period of time on the first display area, and so as to display the unit images while transferring the unit images in given scrolling direction on the second display area.