Patent ID: 6069595
Filing Date: 2000-05-30
Classification: G09G

Abstract:
A scrolling display method, comprising the following steps of:arranging n bar-shaped display elements substantially in parallel to each other at suitable distances from each other, each said bar-shaped display element including m light emitting cells positioned linearly and closely at short distances, so that, by the arrangement, said n bar-shaped display elements are connected to each other like a belt to form a physical screen wherein one column includes m dots and one row includes n dots, an average value of the distances between said adjacent display elements being larger than five times as large as the cell distance in one of said bar-shaped display elements:assuming said physical screen of a pixel construction wherein one column includes m dots and one row includes n dots as an imaginary screen of another pixel construction wherein one column includes m dots and one row includes w dots, and producing image data of the bit map type assuming that an image is displayed in the dot density on said imaginary screen, where w is an integer larger than several times as large as n;distributing those image data for n columns selected at intervals from among the image data for w columns actually to said n bar-shaped display elements, and controlling to drive said m light emitting cells of each of said bar-shaped display elements in accordance with data of m dots for each column, in case that it is assumed that bit map screen data wherein one column includes m dots and one row includes w dots are expanded on said imaginary screen to display the data;in the control to select image data for n columns at intervals from among image data for w columns and distribute the selected image data to said n bar-shaped display elements, selecting the column data in the bitmap screen data at intervals according to an interval control variable arbitrarily determined in accordance with the arrangement distances of said bar-shaped display elements distributed and arranged on said imaginary screen; andwhile those bit map image data to be expanded on said imaginary screen are successively shifted in a direction of a row, repeating data processing for controlling and driving said light emitting cells of said bar-shaped display elements in accordance with image data selected at intervals so that a scrolling image of a dot density wherein one column includes m dots and one row includes w dots, may be visually observed by an after-image effect of a person who watches said imaginary screen.