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 PDF

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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
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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
Application number
CA002296181A
Other languages
French (fr)
Other versions
CA2296181C (en
Inventor
Lester F. Ludwig
J. Chris Lauwers
Keith A. Lantz
Gerald J. Burnett
Emmett R. Burns
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Intellectual Ventures Holding 81 LLC
Original Assignee
Vicor, Inc.
Lester F. Ludwig
J. Chris Lauwers
Keith A. Lantz
Gerald J. Burnett
Emmett R. Burns
Collaboration Properties, Inc.
Avistar Communications Corporation
Intellectual Ventures Fund 61 Llc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US08/131,523 external-priority patent/US5689641A/en
Application filed by Vicor, Inc., Lester F. Ludwig, J. Chris Lauwers, Keith A. Lantz, Gerald J. Burnett, Emmett R. Burns, Collaboration Properties, Inc., Avistar Communications Corporation, Intellectual Ventures Fund 61 Llc filed Critical Vicor, Inc.
Publication of CA2296181A1 publication Critical patent/CA2296181A1/en
Application granted granted Critical
Publication of CA2296181C publication Critical patent/CA2296181C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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.
CA002296181A 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 Expired - Fee Related CA2296181C (en)

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)

* Cited by examiner, † Cited by third party
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

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

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