Patent ID: 7202912

Claim:
A method for displaying a pixmap across at least two raster sizes including a first raster size in a first displaying mode and a second raster size in a second displaying mode, comprising the steps of: storing a single pixmap containing a plurality of pixel lines, said single pixmap having a fixed size that is large enough to encompass the first and second raster sizes; storing a first header set pointing to a first pixmap region of the stored single pixmap, the first pixmap region fitting the first raster size; storing a second header set pointing to a second pixmap region of the stored single pixmap, the second pixmap region fitting the second raster size; detecting whether a displaying mode is in the first displaying mode or the second displaying mode; using the first header set to only display the first pixmap region of the stored single pixmap and not the second pixmap region of the stored single pixmap when the detected displaying mode is the first displaying mode; and using the second header set to only display the second pixmap region of the stored single pixmap and not first pixmap region of the stored single pixmap when the detected displaying mode is the second displaying mode.