05767897 is referenced by 240 patents and cites 10 patents.

A video conferencing system wherein a director controller is adapted for disposition on a lecture podium. The controller includes an interconnected control section and a video display section for controlling the distribution of generated audio and video information signals among a local and remote sites selectively in accordance with command signals fed to the controller by a podium speaker. The system is adapted to operate in one of two operating modes: a "Main-screen" mode and a "Mark-up" mode. In the "Main-screen" mode, the video display section is made up of two display areas; a "presentation" display area, and a "preview" display area. The "presentation" display area displays the video information which typically is currently being viewed by the audience/participants at the remote and local sites. The "preview" video display area is privately viewable by the podium speaker, displays video information signals from a second podium speaker selected one of the video sources. In the "Mark-up" mode, the "preview" area is removed and the size of the "presentation" area is increased. The image in the enlarged "presentation" area is adapted for editing/annotation by the podium speaker. The edited/annotated image is distributed to the local and remote sites.

Title
Video conferencing system
Application Number
8/332097
Publication Number
5767897
Application Date
October 31, 1994
Publication Date
June 16, 1998
Inventor
Brian A Howell
Marblehead
MA, US
Agent
Fish & Richardson P C
Assignee
PictureTel Corporation
MA, US
IPC
H04N 7/15
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