To improve ease of operation with which a user selects an image when many images are simultaneously displayed on a screen, a frame, which divides many images into 12 areas, is superimposed and displayed on a screen displaying thumbnail exhibition thereon. For example, the press of a channel key allows selecting one of the areas and moving to the selected area a focus frame indicating a candidate image for selection, and then the presses of cursor keys allow moving the focus frame to a desired image to be selected. The number of areas can be changed and displayed according to the number of channel keys when a television remote control is used, or according to the number of numeric keys when a mobile telephone is used.