An educational computer system includes a computer, a display device, a remote control character, and a wireless modem for communication between the computer and the remote control character. The remote control character can move and speak in response to signals from the computer, thereby allowing the...http://www.google.com.au/patents/US5977951?utm_source=gb-gplus-sharePatent US5977951 - System and method for substituting an animated character when a remote control physical character is unavailable
