A display device in which display elements 21 are arranged in matrix form to provide a screen, and pictures, characters and animations can be displayed while being edited as desired. The display device comprises: a video data memory 8; a graphic data memory 9; a blanking data memory 10 for blocking the...http://www.google.com.au/patents/US4498081?utm_source=gb-gplus-sharePatent US4498081 - Display device for displaying both video and graphic or character images