Television – Two-way video and voice communication – User positioning
Patent
1995-11-27
1998-09-01
Kuntz, Curtis A.
Television
Two-way video and voice communication
User positioning
348 15, 370266, H04N 714
Patent
active
058017569
ABSTRACT:
A multipoint video conference system includes a plurality of conference terminals, placed at remote points in correspondence with participants in a conference, for transmitting/receiving speech and image signals from/to the participants, and a video conference controller for transmitting/receiving speech and image signals to/from the conference terminals. The video conference controller includes an audio mixer, an identifying section, a frame selecting section, and multiplexers. The audio mixer forms a synthetic speech signal by synthesizing speech signals from the conference terminals. The identifying section detects speech signals from the conference terminals and identifies the conference terminal through which the participant has made utterance. The frame selecting section forms a multi-image signal by selecting image signals equal in number to multiple frames from the image signals from the conference terminals on the basis of the identification result obtained by the identifying section. The multiplexers receive the speech and image signals from the conference terminals and transmit the synthetic speech signal from the audio mixer and the multi-image signal from the frame selecting section to the conference terminals.
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Tanigawa et al. "Personal Multimedia-Multipoint Teleconference System", 1991, IEEE Infocom '91, The Conference on Computer Communications Proceedings vol. 3.
Kuntz Curtis A.
NEC Corporation
Palan Stephen Wolff
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