Multiplex communications – Special services – Conferencing
Reexamination Certificate
2007-04-10
2007-04-10
Pezzlo, John (Department: 2617)
Multiplex communications
Special services
Conferencing
C370S263000, C370S270000, C370S271000
Reexamination Certificate
active
09992008
ABSTRACT:
A distributed intelligence conferencing system is disclosed, having a plurality of conferencing nodes to connect groups of participants to a conference. Each of the conferencing nodes provides for the connection of one or more participants to the conference. Each node includes a DSP for distributed signal processing, eliminating the need for a central processor. The node DSP has a signal measuring device for measuring a significant characteristic of the signals from each of the participants, such as power; a processing device, interconnected with the signal measuring device, for determining the relative characteristics, such as power levels, of each of the number of participant input signals; a communication device, interconnected with the processing device, for communicating the measured signal characteristics for a plurality of participant input signals to all other conferencing nodes; muting means for muting individual participant input signals so that only selected signals are transmitted over the conference bus to the other participants.
REFERENCES:
patent: 4499578 (1985-02-01), Marouf et al.
patent: 4757493 (1988-07-01), Yuen et al.
patent: 5495522 (1996-02-01), Allen et al.
Mills William
Mladenovic Zoran
Brady W. James
Mehra Inder Pal
Pezzlo John
Shaw Steven A.
Telecky , Jr. Frederick J.
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