Patent ID: 7477235

Claim:
A display apparatus, comprising: a display memory for storing an image of a first area forming a portion of an entire image; a display section including a display screen having a display area usable for displaying at least a partial image of the first area; a case for exposing the display screen; scroll means for moving a display screen area appearing on the display screen over the entire image in accordance with a movement of the case; control means for providing a virtual memory for storing an image of a second area having a size greater than the size of the first area in the entire image when the scroll means moves the display screen area beyond the first area; and a table of management states of the virtual memory area in a respective memory device, in which the table of management states includes a listing representative of a plurality of virtual memory areas and an identification, a memory device name, an image file name, and an image file size for each of the virtual memory areas.