Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1990-03-08
1993-04-27
Dwyer, James L.
Facsimile and static presentation processing
Static presentation processing
Attribute control
379 54, 379202, 379206, H04N 712, H04M 1100
Patent
active
052067211
ABSTRACT:
A television conference system having at least one of the functions of automatically directing a camera toward a speaker, of transmitting video signals of picture images from a plurality of television cameras, and of displaying a document image. The television conference system includes a microphone input judgement unit for judging the existence of any input into microphones provided for the speakers of a television conference; a judgement result holding unit for holding the results of the judgement of existence of the microphone inputs over a first predetermined period, the first predetermined period being longer than the shortest period of continuous speaking; a time totaling unit for obtaining the total time of the microphone inputs during the first predetermined period from the results of judgement held in the judgement result holding unit; a speaker specifying unit for specifying as the current speaker the speaker using a microphone having a total time obtained by the time totaling unit which is over a second predetermined period, the second predetermined period being the standard continuing period of noise; and a camera drive unit for driving a camera within a shooting range of the speaker specified as the current speaker by the speaker specifying unit.
REFERENCES:
patent: 3944736 (1976-03-01), Shepard
patent: 4054908 (1977-10-01), Poirier et al.
Bernard A. Wright, "The Design of Picturephone.RTM. Meeting Service (PMS) Conferencing Centers For Video Teleconferencing", IEEE Communications Magazine, pp. 30-36, 1983.
Ashida Youichi
Homma Toshihiro
Imai Ryusaku
Ishiguro Hitoshi
Natori Hiroaki
Chan Wing F.
Dwyer James L.
Fujitsu Limited
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