Distributed digital conferencing system

Details Distributed digital conferencing system Distributed digital conferencing system

1981-04-23

1983-06-21

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 67, H04Q 1104

Patent

active

043897207

ABSTRACT:
In time division communication systems one conference technique is to have a processor combine those samples going to a particular station forming a conference having as many subcombinations as there are stations. This approach, while allowing individual station gain adjustment, suffers from its dependence upon a large number of logic operations for a given conference. A modification of this technique is disclosed which uses a distributed structure such that the individual station ports, under local memory and processor control, operate to combine selected time slot samples into a conference sum unique to the station. In this manner gain values may be assigned on an individual listener station basis while the logic processing for the conference is performed in parallel by the ports involved in the conference.

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patent: 4112258 (1978-09-01), Alles
patent: 4112490 (1978-09-01), Pohlman et al.
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patent: 4228536 (1980-10-01), Gueldenpfennig et al.
patent: 4229814 (1980-10-01), Betts
patent: 4274155 (1981-06-01), Funderburk et al.
1980 Publication of INTEL Corp. entitled "Telephony and Signal Processing", Chapter 4.

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