Soft-edge processing of a video color image is effected in accordance with a stylus nib pressure. Initially, a display circle unit is determined having center coordinance corresponding to display coordinance of a stylus and having a radius corresponding to a nib pressure of the nib stylus. A display...http://www.google.es/patents/US5408593?utm_source=gb-gplus-sharePatente US5408593 - Apparatus and method for creating video images including soft-edge processing
Apparatus and method for creating video images including soft-edge processing