An image display and storage device, method, and medium to process an original image and generate a main image so that the original image does not overlap a sub image, and store the original image instead of the main image when the main image and the sub image are displayed. The device includes an image processor to receive an image, and to generate a display image and a storage image using the received image, a display unit to receive the display image from the image processor, and to display the display image, and an image storing unit to receive the storage image from the image processor and to store the image.