In a network multimedia conference, a bridge service that functions as a proxy for a client to join the conference dynamically selects a video stream from multiple video streams originating from the other participants of the conference and sends the selected video stream to the client for viewing. The...http://www.google.ca/patents/US7668907?utm_source=gb-gplus-sharePatent US7668907 - Method and system for selectively viewing participants of a multimedia network conference
