05003532 is referenced by 153 patents and cites 10 patents.

A multi-point conference system for making a video conference includes a center unit having a controller and an image selector, and three or more stations respectively coupled to the center unit, where each station includes at least one camera for picking up an image to output an image data, a display for displaying an image based on an image data and a request part for making a request. The controller initially sets master, sub and participating stations in conformance with a predetermined rule. The image selector automatically supplies the image data from the master station to the sub and participating stations to be displayed on the display thereof and supplies the image data from the sub station to the master station to be displayed on the display thereof. The controller automatically sets a new master station in response to a request from the request part of an arbitrary station requesting the new master station, sets the master station prior to receiving the request as a new sub station and sets all stations other than the new master and sub stations as new participating stations.

Title
Multi-point conference system
Application Number
7/531455
Publication Number
5003532
Application Date
May 31, 1990
Publication Date
March 26, 1991
Inventor
Hiroaki Natori
Kawasaki
JP
Hitoshi Sato
Tokyo
JP
Hitoshi Ishiguro
Inagi
JP
Yuji Yoshida
Yokohama
JP
Youichi Ashida
Kawasaki
JP
Agent
Staas & Halsey
Assignee
Fujitsu
JP
IPC
H04M 3/42
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