H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 7/15 (2006.01) H04N 7/52 (2006.01)
Patent
CA 2196948
In a multipoint video conference controlling system which is supplied with video packets and audio packets from conference terminals, which multiplexes the video packets to produce a composite packet, and mixes the audio packets to produce a mixed audio packet, a sequence number collating device collates the sequence numbers of the video packets and the audio packets to produce a coincidence signal when the sequence numbers of the video packets and the audio packets coincide with each other. Video and audio transmitting devices transmit synchronously the composite packet and the mixed audio packet in response to the coincidence signal. The multipoint video conference controlling system may comprise video and audio sequence number processing devices which add a sequence number to the composite packet and the mixed audio packet when the video packets and the audio packets have the sequence numbers. The multipoint video conference controlling system may comprise a sequence number producing and adding device which produces a sequence number in response to one of multiplexed video and audio packets from a video server and adds the sequence number to the composite packet and the mixed audio packet.
Fukuoka Hideyuki
Mizuno Hiromi
Corporation Nec
G. Ronald Bell & Associates
LandOfFree
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