Multi-location video conference system
Patent 4882743 Issued on November 21, 1989. Estimated Expiration Date: 
August 1, 2008. 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.
August 1, 2008. 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 means for interactive audio and video conferencing Teleconferencing method and system Multilocation video conference terminal including an arrangement to reduce disruption in video switching Patent #: 4529839 InventorAssigneeApplicationNo. 226491 filed on 08/01/1988US Classes:348/14.09, Conferencing with multipoint control unit348/14.12Transmission control (e.g., resolution or quality)ExaminersPrimary: George, Keith E.Attorney, Agent or FirmInternational ClassesH04M 011/00H04N 007/14 AbstractThe invention, which can be used with AT&T SKYNET.RTM. digital satellite communications service allows a conference director to control a teleconference between several conference rooms. In this invention there are two transmitting channels, one being identified as a broadcast channel and the other is identified as an auxiliary channel. The conference director can assign the broadcast channel to any room and the auxiliary channel to any other room. The video signal on the broadcast channel is sent to a first satellite dish for frequency division multiple access transmission via a satellite to all of the other conference rooms. The video signal on the auxiliary channel is sent to a second satellite dish for frequency division multiple access transmission via the satellite to the conference room from which the broadcast channel originates.Other References
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