Electrical computers and digital processing systems: multicomput – Computer conferencing
Reexamination Certificate
2002-12-19
2009-12-01
Ismail, Shawki S (Department: 2455)
Electrical computers and digital processing systems: multicomput
Computer conferencing
C709S224000, C709S227000, C709S230000, C709S231000, C709S233000, C348S014090
Reexamination Certificate
active
07627629
ABSTRACT:
A method of controlling a multimedia multipoint conference that includes two or more participating multimedia terminals that each includes one or more codecs. Also a controller to control the multimedia multipoint conference. The method includes receiving from each participant information on its codec capabilities, determining codec output characteristics for each participant, including one or both of a codec type and a bit rate, and sending instructions to the participants to set their respective codec to the respective determined codec output characteristics. After each participant's one or more codecs are set to the respective codec output characteristics, the method includes receiving a media stream from one or more of the participants. The media stream from any particular participant is encoded at the determined codec output characteristics for the particular participant. The method further includes passing the received media streams to each participant. The determined codec output characteristics is such that the received media streams may be passed to each participant without any decoding and re-encoding.
REFERENCES:
patent: 5453780 (1995-09-01), Chen et al.
patent: 5764277 (1998-06-01), Loui et al.
patent: 5841763 (1998-11-01), Leondires et al.
patent: 6509925 (2003-01-01), Dermler et al.
patent: 6526445 (2003-02-01), Kumar et al.
patent: 6535240 (2003-03-01), Yang et al.
patent: 6687234 (2004-02-01), Shaffer et al.
patent: 6731734 (2004-05-01), Shaffer et al.
patent: 6738343 (2004-05-01), Shaffer et al.
patent: 6781964 (2004-08-01), Klaghofer
patent: 7158487 (2007-01-01), Klaghofer et al.
patent: 7174365 (2007-02-01), Even et al.
patent: 7213050 (2007-05-01), Shaffer et al.
patent: 7257641 (2007-08-01), VanBuskirk et al.
patent: 7328240 (2008-02-01), El-Gebaly et al.
patent: 2002/0033880 (2002-03-01), Sul et al.
patent: 2003/0005054 (2003-01-01), El-Gebaly et al.
patent: 2007/0005804 (2007-01-01), Rideout
“Multipoint Conferencing: RADVision MCU-323 Multipoint Conferencing Unit”, RADVision Ltd., Israel, 2000. Also available at www.radvision.com.
H. ElGebaly, “Characterization of Multimedia Streams of an H.323 Terminal”,Intel Technology Journal Q2 '98, pp. 1-9, Intel Corporation, Santa Clara, CA, 1998.
J. Toga and H. ElGebaly, “Demystifying Multimedia Conferencing Over the Internet Using the H.323 Set of Standards”,Intel Technology Journal Q2 '98, pp. 1-11, Intel Corporation, Santa Clara, CA, 1998.
J. Glasmann, W. Kellerer, and H. Muller, “Service Architectures in H.323 and SIP—A Comparison”, pp. 1-15, Munich University of Technology (TUM), Germany.
S. Gavish, “Multipoint Control Unit”, Accord Networks, Power Point slides for Presentation, Atlanta, Georgia (now part of Polycom, Pleasanton, CA). Also available at www.accordnetworks.com.
Chen Wen-hsiung
Graham Philip R.
Pelton Gregory D.
Wu Fang
Cisco Technology Inc.
INVENTEK
Ismail Shawki S
Rosenfeld Dov
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