CA2204442A1 - Multimedia collaboration system with separate data network and a/v network controlled by information transmitting on the data network - Google Patents
Multimedia collaboration system with separate data network and a/v network controlled by information transmitting on the data networkInfo
- Publication number
- CA2204442A1 CA2204442A1 CA2204442A CA2204442A CA2204442A1 CA 2204442 A1 CA2204442 A1 CA 2204442A1 CA 2204442 A CA2204442 A CA 2204442A CA 2204442 A CA2204442 A CA 2204442A CA 2204442 A1 CA2204442 A1 CA 2204442A1
- Authority
- CA
- Canada
- Prior art keywords
- video
- audio
- data network
- multimedia
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Telephonic Communication Services (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
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 environment. 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.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/131,523 US5689641A (en) | 1993-10-01 | 1993-10-01 | Multimedia collaboration system arrangement for routing compressed AV signal through a participant site without decompressing the AV signal |
US08/131,523 | 1993-10-01 | ||
CA002173204A CA2173204C (en) | 1993-10-01 | 1994-03-16 | Multimedia collaboration system |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002173204A Division CA2173204C (en) | 1993-10-01 | 1994-03-16 | Multimedia collaboration system |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2204442A1 true CA2204442A1 (en) | 1995-04-13 |
CA2204442C CA2204442C (en) | 1998-10-20 |
Family
ID=25678405
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002204442A Expired - Lifetime CA2204442C (en) | 1993-10-01 | 1994-03-16 | Multimedia collaboration system with separate data network and a/v network controlled by information transmitting on the data network |
CA002290701A Abandoned CA2290701A1 (en) | 1993-10-01 | 1994-03-16 | Multimedia collaboration system |
CA002297940A Expired - Lifetime CA2297940C (en) | 1993-10-01 | 1994-03-16 | Two monitor videoconferencing hardware |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002290701A Abandoned CA2290701A1 (en) | 1993-10-01 | 1994-03-16 | Multimedia collaboration system |
CA002297940A Expired - Lifetime CA2297940C (en) | 1993-10-01 | 1994-03-16 | Two monitor videoconferencing hardware |
Country Status (1)
Country | Link |
---|---|
CA (3) | CA2204442C (en) |
-
1994
- 1994-03-16 CA CA002204442A patent/CA2204442C/en not_active Expired - Lifetime
- 1994-03-16 CA CA002290701A patent/CA2290701A1/en not_active Abandoned
- 1994-03-16 CA CA002297940A patent/CA2297940C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2290701A1 (en) | 1995-04-13 |
CA2297940C (en) | 2002-09-10 |
CA2204442C (en) | 1998-10-20 |
CA2297940A1 (en) | 1995-04-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2173209A1 (en) | Multimedia collaboration system | |
GB2319135B (en) | Teleconferencing system | |
CA2296187A1 (en) | Synchronization in video conferencing | |
CA2204442A1 (en) | Multimedia collaboration system with separate data network and a/v network controlled by information transmitting on the data network |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20140317 |