IMAGE DISPLAY DEVICE AND METHOD

摘要

PROBLEM TO BE SOLVED: To provide an image display device capable of scrolling or enlarging/ reducing continuously at high speed. SOLUTION: A display range calculation part 11 calculates a display range and communicates the result to an image data acquisition part 13 and a display control part 15. The image data acquisition part 13 reads map image data of the communicated display range from an external memory device 7. The display control part 15 grasps a display change rate and determines a 'thinning degree' corresponding to the degree. The display control part 15 reads the image data acquired by the image data acquisition part 13, and plots an image simplified corresponding to the determined 'thinning degree' and displays the image on a display 1.