Multi-point conference system
Patent 5003532 Issued on March 26, 1991. Estimated Expiration Date: 
May 31, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 31, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod and apparatus for controlling a conference Analytic function optical component Video conferencing network Communication system dynamic conferencer circuit Method and device for establishing bidirectional communications between persons located at different geographically distant stations Teleconferencing system Patent #: 4878242 InventorsApplicationNo. 531455 filed on 05/31/1990US Classes:348/14.09, Conferencing with multipoint control unit370/265, Particular technique for combining diverse information types379/205.01Conferencing initiation by single calling stationExaminersPrimary: Olms, Douglas W.Assistant: Kim, Una Attorney, Agent or FirmForeign Patent References
International ClassH04M 003/42Foreign Application Priority Data1989-06-02 JPAbstractA 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.Field of SearchConferencing | |
