CA2296187A1 - Synchronization in video conferencing - Google Patents
Synchronization in video conferencing Download PDFInfo
- Publication number
- CA2296187A1 CA2296187A1 CA002296187A CA2296187A CA2296187A1 CA 2296187 A1 CA2296187 A1 CA 2296187A1 CA 002296187 A CA002296187 A CA 002296187A CA 2296187 A CA2296187 A CA 2296187A CA 2296187 A1 CA2296187 A1 CA 2296187A1
- Authority
- CA
- Canada
- Prior art keywords
- video
- audio
- data
- capabilities
- 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
- 230000005540 biological transmission Effects 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 abstract 2
- 230000006855 networking Effects 0.000 abstract 2
- 235000008694 Humulus lupulus Nutrition 0.000 abstract 1
- 238000013459 approach Methods 0.000 abstract 1
- 230000006837 decompression Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000005065 mining Methods 0.000 abstract 1
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 mining 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 mining 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 | 1993-10-01 | ||
| 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 |
| 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 |
|---|---|
| CA2296187A1 true CA2296187A1 (en) | 1995-04-13 |
| CA2296187C CA2296187C (en) | 2001-07-24 |
Family
ID=25678406
Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002296187A Expired - Fee Related CA2296187C (en) | 1993-10-01 | 1994-10-03 | Synchronization in video conferencing |
| 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 |
| 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 |
| 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 |
| 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 (4)
| 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 |
| 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 |
| 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 |
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CA (5) | CA2296187C (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 CA002296187A patent/CA2296187C/en not_active Expired - Fee Related
- 1994-10-03 CA CA002296182A patent/CA2296182C/en not_active Expired - Fee Related
- 1994-10-03 CA CA002296189A patent/CA2296189C/en not_active Expired - Fee Related
- 1994-10-03 CA CA002296181A patent/CA2296181C/en not_active Expired - Fee Related
- 1994-10-03 CA CA002296185A patent/CA2296185C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2296187C (en) | 2001-07-24 |
| CA2296185C (en) | 2001-07-24 |
| CA2296185A1 (en) | 1995-04-13 |
| CA2296189C (en) | 2001-07-24 |
| CA2296189A1 (en) | 1995-04-13 |
| CA2296182C (en) | 2000-12-19 |
| CA2296181A1 (en) | 1995-04-13 |
| CA2296181C (en) | 2001-06-26 |
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|---|---|---|
| CA2173209A1 (en) | Multimedia collaboration system | |
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| KR20010082529A (en) | Unified computing and communication architecture(ucca) | |
| 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 | |
| MY148799A (en) | Multipoint-to-multipoint multimedia conferencing system incorporating a distributed entity environment and a unique method of floor control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |