Perception of video clip is enabled in an instant messaging communications session by storing on a host system one or more video clips, receiving the request at the host system for a selected video clip to be delivered to an instant messaging participant system, accessing the selected video clip stored...http://www.google.com.hk/patents/US20040223606?utm_source=gb-gplus-share專利 US20040223606 - Host based video clips and transport mechanism