Patent ID: 7023455

Claim:
An image display device, comprising: first re-size means for reading out image data from a first memory that stores therein image data, and re-sizing the read-out image data; a second memory for storing the image data re-sized by the first re-size means; display control means for reading out image data from the second memory and re-sizing the read-out image data in accordance with a magnification change operation for an image to make display means display thereon an image of the re-sized image data; and control means for, while the magnification change operation is carried out, instructing the display control means to make the display means display thereon the image re-sized by the display control means without newly reading out the image data from the first memory, and after the magnification changing operation is fixed, instructing the first re-size means to re-size image data newly read out from the first memory, in accordance with contents of the fixed magnification change operation, wherein when resolution of the image data read out from the first memory becomes insufficient in enlarged image display, after the magnification change operation is fixed, the image data is stored in the second memory without being re-sized and an image in a desired area is read out from the second memory by the display control means to be displayed in the re-sized form.