Virtual Reality Environments are typically represented in exactly the same manner to all participants, with variation according only to position and point of view of each participant. Systems and methods are disclosed herein for differentiating portions of the content of a virtual reality environment...http://www.google.fr/patents/US20030174178?utm_source=gb-gplus-shareBrevet US20030174178 - System for presenting differentiated content in virtual reality environments
System for presenting differentiated content in virtual reality environments
