The purpose is to provide a system and a method for 3-D shared virtual environment communication system to enable a plurality of users to share a common virtual environment so that real-time facial expressions of other users can be displayed on user's own terminal and voices heard. The system thus facilitate...http://www.google.com/patents/US6753857?utm_source=gb-gplus-sharePatent US6753857 - Method and system for 3-D shared virtual environment display communication virtual conference and programs therefor
