Patent ID: 6011549
Filing Date: 2000-01-04
Classification: G06F,G09G

Abstract:
A scrolling system for a user to scroll a text image containing alphanumeric characters that are generated by a computer system from a text-based file, said computer system containing means for generating display windows on a monitor and for scrolling said text image at a granularity defined by said alphanumeric characters, said scrolling system comprising:means for generating, on said monitor, a first display window having a blank client area;means for generating, on said monitor, a second display window having a client area that is larger than said client area of said first window;means for positioning said client area of said second window such that said client area of said first window is positioned completely within said client area of said second window;said second window being blocked from displaying on said computer monitor except for a portion of its client area which overlaps said client area of said first window;means for drawing a first text image from said text-based file on said client area of said second window;means for moving said second window from a starting location in a direction desired by said user, thereby displaying different portions of said text image on said computer monitor during moving;means for returning said second window to said starting location when said text image has been moved a distance corresponding to said granularity; andmeans for drawing a second text image from said text-based file on said client area of said second window such that said first and said second images differ by said granularity.