Wide band communication system transmitting video and audio signals among a plurality of users
Patent 5200989 Issued on April 6, 1993. Estimated Expiration Date: 
February 15, 2011. 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.
February 15, 2011. 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 References 3922491 Videocommunication network between videophone terminals and a picture bank Patent #: 4533943 InventorAssigneeApplicationNo. 659314 filed on 02/15/1991US Classes:348/14.11, Switching379/93.14Having switching stationExaminersPrimary: Dwyer, James L.Assistant: Chan, Wing F. Foreign Patent References
International ClassH04M 011/00Foreign Application Priority Data1988-06-16 ITAbstractIt is described a wide band communication system suitable to allow the exchange of audio signals, video signals and data among a plurality of users (U1, U2, . . . , Ui), either the same are abutted to a same switching node (NC) or to switching nodes distant among them from the geographical point of view.Solutions suitable to allow a particularly simple and economic realization of the means for the control of the signalling relevant to the video link, suitable to allow a particularly simple and cheap realization of the switching matrix, as well as to align audio signals to video signals are foreseen (FIG. 2).Other References
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