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Videotelephone conference system

  • US 4,054,908 A
  • Filed: 05/24/1976
  • Issued: 10/18/1977
  • Est. Priority Date: 05/27/1975
  • Status: Expired due to Term
First Claim
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1. A video conference system connecting a plurality of remotely located conference rooms, each containing a group of conferees, comprising a plurality of videotelephones in each room assigned to the conferees in said room and each comprising a camera and an image receiver, a plurality of microphones respectively associated with the videotelephones, means for comparing the levels of the speech signals generated by said microphones in each room and registering the address of the videotelephone associated with the microphone geneating the loudest speech signal, means for mixing all the speech signals generated by the microphones in each room and thereby obtaining room mixed speech signals, means for comparing the levels of the mixed speech signals of the rooms and registering the address of the room whose microphones generate the loudest mixed speech signals, means for transmitting video signals from each conference room to the other, video switching means for selectively connecting the cameras of the videotelephones or each room to the image receiver of said room and to said video signal transmitting means and means controlled by the videotelephone address register means and the room address register means for generating control signals for said switching means in response to said loudest speech signal and said loudest mixed speech signal.

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