The present invention relates to an information processing apparatus and an information processing device using same. A method for displaying an image group on a display device is provided and comprises the following steps of receiving the assignment of the image group to be displayed on the display device, judging whether the arrangement information representing an arranging direction of the group of images when displayed on the display device is associated with the designated group of images, displaying the designated group of images on the displaying device such that: (1) when the designated group of images is associated with the arrangement information, the designated group of images are displayed with the arranging direction represented by the arrangement information, and (2) when the designated group of images is not associated with the arrangement information, the designated group of images are displayed with a predetermined default arranging direction.