Screen Updating Method
Original Publication Date: 1989-Jun-01
Included in the Prior Art Database: 2005-Jan-28
This article describes a new screen updating method for multi-media processing systems, such as graphics editors, which display various kinds of objects on an APA (All-Points-Addressable) screen in a WYSIWYG (What You See Is What You Get) manner, and which provide interactive editing operations for moving objects, changing object attributes, sizing, and so on. When these operations are activated by a user, the interactive system has to redraw objects on the screen immediately. It is very important that the screen be updated quickly and not flash uncomfortably. A method is described of screen updating that is efficient for redrawing and comfortable to watch.