Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent
1988-08-01
1989-11-21
George, Keith E.
Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
358 85, H04M 1100, H04N 714
Patent
active
048827436
ABSTRACT:
The 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.
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patent: 4529839 (1985-07-01), Colton et al.
L. Spilman, "Customized Digital Network for the Department of Defense", AT&T Technology, vol. 1, No. 1, pp. 58-65 (undated).
Letti et al., "Centralized Management and Control Architecture for the Defense Telecommunications Network," IEEE International Conference on Communications, '86, 22-25 Jun. 1986, Toronto, Canada, Conf. Rec., vol. 3, pp. 1584-1586.
Richard Adleman, "Defense Commercial Telecommunications Network (DCTN)-A Digital Integrated Services Network," IEEE International Conference on Communications 1985, Chicago, Il., 23-26 Jun. 1985, Conf. Rec. vol. 1, pp. 244-246.
Deacon et al, "DCTN: An Integrated Services Digital Network for the Department of Defense" IEEE Military Communications Conference, 5-9, Oct. 1986, Monterey, Calif., Conf. Rec. vol. 3, pp. 50.4.1-50.4.2.
Larry Spillman, "Custom Video Network for DOD," Teleconference, vol. 7, No. 2, Jul. 1988, pp. 16-19.
American Telephone and Telegraph
AT&T Bell Laboratories
George Keith E.
Weiss Eli
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