Multiplex communications – Special services – Conferencing
Reexamination Certificate
2005-02-23
2008-12-02
Nguyen, Chau (Department: 2619)
Multiplex communications
Special services
Conferencing
C370S352000
Reexamination Certificate
active
07460495
ABSTRACT:
A serverless peer-to-peer (P2P) multi-party real-time audio communication system and method in which each of the peers takes a turn mixing and compressing the audio and redelivering the compressed audio. An input audio stream is divided or split into frames. At each frame, one peer node is selected to mix and redeliver the audio to the remainder of the peers in the network. The number of frames mixed and redelivered by a certain peer is proportional to its available resources (such as the upload bandwidth or computational power). The P2P audio communication system and method flexibly balances the load of the peers, such that peers having more resources are able to assist peers having fewer resources. This enables the P2P audio communication system and method to conduct a multi-party audio communication session without the need for powerful servers or peers.
REFERENCES:
patent: 7158487 (2007-01-01), Klaghofer et al.
patent: 2002/0126626 (2002-09-01), Singh et al.
patent: 2002/0126685 (2002-09-01), Leatherbury et al.
patent: 2002/0133764 (2002-09-01), Wang
patent: 2002/0178260 (2002-11-01), Chang
patent: 2003/0115050 (2003-06-01), Chen et al.
patent: 2003/0182001 (2003-09-01), Radenkovic et al.
patent: 2004/0078622 (2004-04-01), Kaminsky et al.
patent: 2004/0165541 (2004-08-01), Scholte
patent: 2005/0094579 (2005-05-01), Acharya et al.
patent: 1246395 (2002-02-01), None
European Search Report, Application No. EP6100434, completed Mar. 28, 2006, received Apr. 10, 2006.
Co-pending U.S. Appl. No. 10/887,406 entitled “Efficient One-to-Many Content Distribution in a Peer-to-Peer Computer Network” by J. Li, P. Chou, and C. Zhang, filed on Jul. 7, 2004.
G.722.1, “Coding at 24 and 32 kbit/s for hands-free operation in systems with low frame loss”.
Lennox, J., Schulzrinne, H., “A protocol for reliable decentralized conferencing”,In Proc of 13th international workshop on network and operating systems support for digital audio and video, (NOSSDAV'2003), pp. 72-81, 2003, Monterey, California.
Li, J., Chou, P. A., and Zhang, C., “Mutualcast: An Efficient Mechanism for Content Distribution in a Peer-to-Peer (P2P) Network”, MSR-TR-2004-100, Sep. 2004.
Radenkovic, M., Greenhalgh, C., and Benford, S., “Deployment issues for multi-user audio support in CVEs”,In Proc. ACM Symp. On Virtual Reality Software and Technology, pp. 179-185, 2002, Hong Kong, China.
Singh, K., Nair, G., and Schulzrinne, H., “Centralized Conferencing using SIP”,In Proc of the 2nd IP-Telephony Workshop, Apr. 2001.
Chriss Andrew
Fischer Craig S.
Lyon & Harr L.L.P.
Microsoft Corporation
Nguyen Chau
LandOfFree
Serverless peer-to-peer multi-party real-time audio... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Serverless peer-to-peer multi-party real-time audio..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Serverless peer-to-peer multi-party real-time audio... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4023961