Patent ID: 7034839
Filing Date: 2006-04-25
Classification: G01C,G09G,H04N

Abstract:
1. An image display system comprising: first storing means for storing image data; commanding means for commanding a start of scrolling a displayed image on a display; compressing means for retrieving a given portion of the image data from the first storing means when the start of scrolling the displayed image is commanded by the commanding means, and then compressing the given portion of the image data to generate compressed data, wherein the given portion of the image data includes the image data that is to be displayed at scrolling; second storing means for storing the compressed data; expanding means for expanding the compressed data stored in the second storing means to generate expanded data; and image displaying means for displaying, by using the expanded data, the displayed image at scrolling, wherein the second storing means further stores the given portion of the image data that is not compressed by the compressing means, and wherein the compressing means retrieves the given portion of the image data that is not compressed from the second storing means and then compresses the given portion of the image data when the start of scrolling the displayed image is commanded by the commanding means.