Multiplex communications – Wide area network – Packet switching
Patent
1996-06-07
1998-09-01
Lee, Thomas C.
Multiplex communications
Wide area network
Packet switching
39520068, 370260, 370267, 379202, G06F 1300
Patent
active
058022945
ABSTRACT:
A multimedia collaboration system that integrates separate real-time and asynchronous networks--the former for real-time audio and video, and the latter for control signals and textual, graphical and other data--in a manner that is interoperable across different computer and network operating system platforms and which closely approximates the experience of face-to-face collaboration, while liberating the participants from the limitations of time and distance. These capabilities are achieved by exploiting a variety of hardware, software and networking technologies in a manner that preserves the quality and integrity of audio/video/data and other multimedia information, even after wide area transmission, and at a significantly reduced networking cost as compared to what would be required by presently known approaches. The system architecture is readily scalable to the largest enterprise network environments. It accommodates differing levels of collaborative capabilities available to individual users and permits high-quality audio and video capabilities to be readily superimposed onto existing personal computers and workstations and their interconnecting LANs and WANs. In a particular preferred embodiment, a plurality of geographically dispersed multimedia LANs are interconnected by a WAN. The demands made on the WAN are significantly reduced by employing multi-hopping techniques, including dynamically avoiding the unnecessary decompression of data at intermediate hops, and exploiting video mosaicing, cut-and-paste and audio mixing technologies so that significantly fewer wide area transmission paths are required while maintaining the high quality of the transmitted audio/video.
REFERENCES:
patent: 4054908 (1977-10-01), Poirier et al.
patent: 4686698 (1987-08-01), Tompkins et al.
patent: 4716585 (1987-12-01), Tompkins et al.
patent: 4965819 (1990-10-01), Kannes
patent: 5014267 (1991-05-01), Tompkins et al.
patent: 5315633 (1994-05-01), Champa
patent: 5353398 (1994-10-01), Kitahara et al.
patent: 5382972 (1995-01-01), Kannes
patent: 5408526 (1995-04-01), McFarland et al.
patent: 5444476 (1995-08-01), Conway
patent: 5515491 (1996-05-01), Bates et al.
patent: 5526024 (1996-06-01), Gaglianello et al.
patent: 5561736 (1996-10-01), Moore et al.
patent: 5602580 (1997-02-01), Tseng
Crawford, et al., "Videomatic Switching: System and Services," Digital Communications, Int. (1988).
Watabe et al., "Distributed Desktop Conferencing System with Multiuser Multimedia Interface", IEEE 1991.
Nunokawa et al., "Teleconferencing Using Stereo Voice and an Electronic OHP", IEEE 1988.
Watabe et al., "A Distributed Multiparty Desktop Conferencing System and Its Architecture", IEEE 1990.
Maeno et al., "Distributed Desktop Conferencing System (MERMAID) Based on Group Communication Architecture", IEEE 1991.
Ohmori et al., "Distributed Cooperative Control for Sharing Applications Based on Multiparty and Multimedia Desktop Conferencing System", IEEE 1992.
Sakata, "B-ISDN Multimedia Workstation Architecture", IEEE 1993.
Kamel, "An Integrated Approach to Share Synchronous Groupware Workspaces", IEEE 1993.
Leung et al., "Optimum Connection Paths for a Class of Videoconferences", IEEE 1991.
Burnett Gerald J.
Burns Emmett R.
Lantz Keith A.
Lauwers J. Chris
Ludwig Lester F.
Kim Ki S.
Lee Thomas C.
Opperman Craig P.
Vicor, Inc.
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