CA2296181A1 - System for providing a directory of av devices and capabilities and call processing such that each participant participates to the extent of capabilities available - Google Patents
System for providing a directory of av devices and capabilities and call processing such that each participant participates to the extent of capabilities available Download PDFInfo
- Publication number
- CA2296181A1 CA2296181A1 CA002296181A CA2296181A CA2296181A1 CA 2296181 A1 CA2296181 A1 CA 2296181A1 CA 002296181 A CA002296181 A CA 002296181A CA 2296181 A CA2296181 A CA 2296181A CA 2296181 A1 CA2296181 A1 CA 2296181A1
- Authority
- CA
- Canada
- Prior art keywords
- capabilities
- video
- audio
- data
- quality
- 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)
- Interconnected Communication Systems, Intercoms, And Interphones (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 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.
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 | ||
CA002173209A CA2173209C (en) | 1993-10-01 | 1994-10-03 | Multimedia collaboration system |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002173209A Division CA2173209C (en) | 1993-10-01 | 1994-10-03 | Multimedia collaboration system |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2296181A1 true CA2296181A1 (en) | 1995-04-13 |
CA2296181C CA2296181C (en) | 2001-06-26 |
Family
ID=25678406
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002296189A Expired - Fee Related CA2296189C (en) | 1993-10-01 | 1994-10-03 | System for teleconferencing in which collaboration types and participants by names or icons are selected by a participant of the teleconference |
CA002296187A Expired - Fee Related CA2296187C (en) | 1993-10-01 | 1994-10-03 | Synchronization in video conferencing |
CA002296185A Expired - Fee Related CA2296185C (en) | 1993-10-01 | 1994-10-03 | System for call request which results in first and second call handle defining call state consisting of active or hold for its respective av device |
CA002296181A Expired - Fee Related CA2296181C (en) | 1993-10-01 | 1994-10-03 | System for providing a directory of av devices and capabilities and call processing such that each participant participates to the extent of capabilities available |
CA002296182A Expired - Fee Related CA2296182C (en) | 1993-10-01 | 1994-10-03 | Call control in video conferencing allowing acceptance and identification of participants in a new incoming call during an active teleconference |
Family Applications Before (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002296189A Expired - Fee Related CA2296189C (en) | 1993-10-01 | 1994-10-03 | System for teleconferencing in which collaboration types and participants by names or icons are selected by a participant of the teleconference |
CA002296187A Expired - Fee Related CA2296187C (en) | 1993-10-01 | 1994-10-03 | Synchronization in video conferencing |
CA002296185A Expired - Fee Related CA2296185C (en) | 1993-10-01 | 1994-10-03 | System for call request which results in first and second call handle defining call state consisting of active or hold for its respective av device |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002296182A Expired - Fee Related CA2296182C (en) | 1993-10-01 | 1994-10-03 | Call control in video conferencing allowing acceptance and identification of participants in a new incoming call during an active teleconference |
Country Status (1)
Country | Link |
---|---|
CA (5) | CA2296189C (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9380264B1 (en) | 2015-02-16 | 2016-06-28 | Siva Prasad Vakalapudi | System and method for video communication |
EP3912338B1 (en) | 2019-01-14 | 2024-04-10 | Dolby Laboratories Licensing Corporation | Sharing physical writing surfaces in videoconferencing |
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1994
- 1994-10-03 CA CA002296189A patent/CA2296189C/en not_active Expired - Fee Related
- 1994-10-03 CA CA002296187A patent/CA2296187C/en not_active Expired - Fee Related
- 1994-10-03 CA CA002296185A patent/CA2296185C/en not_active Expired - Fee Related
- 1994-10-03 CA CA002296181A patent/CA2296181C/en not_active Expired - Fee Related
- 1994-10-03 CA CA002296182A patent/CA2296182C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2296189A1 (en) | 1995-04-13 |
CA2296182C (en) | 2000-12-19 |
CA2296187C (en) | 2001-07-24 |
CA2296181C (en) | 2001-06-26 |
CA2296187A1 (en) | 1995-04-13 |
CA2296185C (en) | 2001-07-24 |
CA2296189C (en) | 2001-07-24 |
CA2296185A1 (en) | 1995-04-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2173209A1 (en) | Multimedia collaboration system | |
GB2319135B (en) | Teleconferencing system | |
CA2296181A1 (en) | System for providing a directory of av devices and capabilities and call processing such that each participant participates to the extent of capabilities available | |
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 | ||
MKLA | Lapsed |