Electrical computers and digital processing systems: multicomput – Computer conferencing
Patent
1997-06-24
2000-10-24
Asta, Frank J.
Electrical computers and digital processing systems: multicomput
Computer conferencing
709205, 709227, 709229, 709245, G06F 1516
Patent
active
061381446
ABSTRACT:
In a multicast capable IP network implemented over an ATM network, each client terminal on a multimedia conference, for each media type it transmits, is assigned a multicast IP address and a port number (together known as a socket) on which to transmit packets, wherein each assigned multicast IP address is unique and different than the multicast IP address assigned to any other client for any media type. Each client terminal then selects, for each media type, which clients on the conference it wants to receive packets from. Only packets that are in fact requested by a client are routed over the multicast IP network to the requesting client. A single special purpose Multicast Address Resolution System (MARS) server is associated with the conference when the conference is established. Each client terminal uses that MARS server, whether on the same or different IP sub-networks, but on a common ATM network, for purposes of mapping the multicast IP addresses used in the conference into a set of unicast ATM endpoint addresses used by the ATM-connected client terminals. Similarly, when a specific conference uses a Multicast Server, a single special purpose Multicast Server is used for all clients on the conference, whether on the same or different IP sub-networks, for purposes of establishing point-to-multipoint ATM connections to the conference endpoints.
REFERENCES:
patent: 5600644 (1997-02-01), Chang et al.
patent: 5694547 (1997-12-01), Subramanian et al.
patent: 5758070 (1998-05-01), Lawrence
patent: 5784561 (1998-07-01), Bruno et al.
patent: 5790804 (1998-08-01), Osborne
patent: 5832229 (1998-11-01), Tomoda et al.
patent: 5835723 (1998-11-01), Andrews et al.
Estrin et al., "Multimedia Over IP: Specs Show the Way: A host of protocols could make it possible to send real-time traffic over IP nets", Data Communications, vol.25, No. 10, p.93, Aug. 1996.
Stallings, William, "IPv6: the new netspeak.", LAN Magazine, vol.11, No. 12, p. S24, Nov. 1996.
Anonymous, "White Pine Software: Set to Capture Multicast Video Conferencing Market", M2 Communications, May 1997.
Armitage, Greenville J., "IP Multicasting over ATM Networks" The Journal on Selected Areas in Communication, vol. 18, No. 3, Apr. 1997.
Barnes, Jeremy et al., IP multicast of real-time MPEG over ATM, Computer Networks and ISDN Systems 28 (1996), pp. 1929-1937.
Symington, Susan F., Internet Multicast over Asynchronous Transfer Mode, Proceedings of the Military Communications Conference (Milcom), San Diego, Nov. 6-8, 1995, pp. 262-268.
DeSimone Antonio
Golan Joseph
Kuthyar Ashok K.
Parent Bryant Richard
Ramamurthy Ram S.
Asta Frank J.
AT&T Corp.
Romero Almari
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