DE69026415D1 - Zyklische Übertragung von Videobereichen für Videokonferenzsysteme - Google Patents

Zyklische Übertragung von Videobereichen für Videokonferenzsysteme

Info

Publication number
DE69026415D1
DE69026415D1 DE69026415T DE69026415T DE69026415D1 DE 69026415 D1 DE69026415 D1 DE 69026415D1 DE 69026415 T DE69026415 T DE 69026415T DE 69026415 T DE69026415 T DE 69026415T DE 69026415 D1 DE69026415 D1 DE 69026415D1
Authority
DE
Germany
Prior art keywords
video
areas
conference systems
cyclical transmission
video conference
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.)
Expired - Fee Related
Application number
DE69026415T
Other languages
English (en)
Other versions
DE69026415T2 (de
Inventor
Arthur Appel
Miriam Zohar
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of DE69026415D1 publication Critical patent/DE69026415D1/de
Publication of DE69026415T2 publication Critical patent/DE69026415T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • H04N19/436—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation using parallelised computational arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/141—Systems for two-way working between two video terminals, e.g. videophone

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Television Systems (AREA)
DE69026415T 1989-04-27 1990-01-09 Zyklische Übertragung von Videobereichen für Videokonferenzsysteme Expired - Fee Related DE69026415T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/344,180 US4935953A (en) 1989-04-27 1989-04-27 Cyclic video region transmission for videoconferencing systems

Publications (2)

Publication Number Publication Date
DE69026415D1 true DE69026415D1 (de) 1996-05-15
DE69026415T2 DE69026415T2 (de) 1996-10-10

Family

ID=23349399

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69026415T Expired - Fee Related DE69026415T2 (de) 1989-04-27 1990-01-09 Zyklische Übertragung von Videobereichen für Videokonferenzsysteme

Country Status (5)

Country Link
US (1) US4935953A (de)
EP (1) EP0394606B1 (de)
JP (1) JPH0834585B2 (de)
CA (1) CA2000022C (de)
DE (1) DE69026415T2 (de)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5056136A (en) * 1990-03-09 1991-10-08 The United States Of America As Represented By The United States Department Of Energy Secure video communications system
US5587735A (en) * 1991-07-24 1996-12-24 Hitachi, Ltd. Video telephone
EP0836323B1 (de) * 1991-02-20 2004-01-14 Hitachi, Ltd. Bildfernsprechgerät
EP0523617B1 (de) * 1991-07-15 1997-10-01 Hitachi, Ltd. Telekonferenzendstellengerät
DE69222580T2 (de) 1991-07-15 1998-04-16 Hitachi Ltd Bildkoder-Dekoder und Telekonferenzendstellengerät
JP3308563B2 (ja) * 1991-07-15 2002-07-29 株式会社日立製作所 多地点テレビ会議システム
DE69232343D1 (de) 1991-08-13 2002-02-14 Canon Kk Bildübertragungsvorrichtung
JP3513160B2 (ja) * 1991-12-06 2004-03-31 キヤノン株式会社 動画像信号符号化装置及びその方法
US5351242A (en) * 1992-04-14 1994-09-27 Marian Kramarczyk Method and apparatus for configuring and maintaining token ring networks
US5539727A (en) * 1992-04-14 1996-07-23 Kramarczyk; Marian Method and apparatus for configuring and maintaining token ring networks
US5475421A (en) * 1992-06-03 1995-12-12 Digital Equipment Corporation Video data scaling for video teleconferencing workstations communicating by digital data network
US6577324B1 (en) 1992-06-03 2003-06-10 Compaq Information Technologies Group, L.P. Video and audio multimedia pop-up documentation by performing selected functions on selected topics
US5623690A (en) 1992-06-03 1997-04-22 Digital Equipment Corporation Audio/video storage and retrieval for multimedia workstations by interleaving audio and video data in data file
US5594859A (en) * 1992-06-03 1997-01-14 Digital Equipment Corporation Graphical user interface for video teleconferencing
US5375068A (en) 1992-06-03 1994-12-20 Digital Equipment Corporation Video teleconferencing for networked workstations
JP3526057B2 (ja) * 1992-07-31 2004-05-10 キヤノン株式会社 動画像伝送装置
US5757418A (en) * 1992-07-31 1998-05-26 Canon Kabushiki Kaisha Television conference system and method therefor
EP0589657B1 (de) * 1992-09-21 1999-05-12 Canon Kabushiki Kaisha Netzsystem und Terminalgerät
US5363141A (en) * 1993-01-29 1994-11-08 At&T Bell Laboratories Method and apparatus for transmitting encoded blocks of video signals at different channel rates
US6738357B1 (en) * 1993-06-09 2004-05-18 Btg International Inc. Method and apparatus for multiple media digital communication system
DE69432524T2 (de) * 1993-06-09 2004-04-01 Btg International Inc. Verfahren und vorrichtung für ein digitales multimediakommunikationssystem
US5642151A (en) * 1993-11-12 1997-06-24 International Business Machines Corporation Distribution of television signals to workstations
US6313863B1 (en) * 1994-07-29 2001-11-06 Canon Kabushiki Kaisha Image communication apparatus and system
US5608450A (en) * 1994-09-07 1997-03-04 Intel Corporation Video conferencing system with fast packet loss recovery
US5854898A (en) 1995-02-24 1998-12-29 Apple Computer, Inc. System for automatically adding additional data stream to existing media connection between two end points upon exchange of notifying and confirmation messages therebetween
US5872572A (en) * 1995-12-08 1999-02-16 International Business Machines Corporation Method and apparatus for generating non-uniform resolution image data
US5757424A (en) * 1995-12-19 1998-05-26 Xerox Corporation High-resolution video conferencing system
US9014177B2 (en) 1996-03-06 2015-04-21 Bear Creek Technologies, Inc. System for interconnecting standard telephony communications equipment to internet
WO1997033412A1 (en) * 1996-03-06 1997-09-12 Bear Creek Technologies, Inc. System for interconnecting standard telephony communications equipment to internet protocol networks
US6348946B1 (en) 1997-08-14 2002-02-19 Lockheed Martin Corporation Video conferencing with video accumulator array VAM memory
US6288753B1 (en) * 1999-07-07 2001-09-11 Corrugated Services Corp. System and method for live interactive distance learning

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE333786B (de) * 1968-10-08 1971-03-29 Ericsson Telefon Ab L M
DE2642485A1 (de) * 1976-09-18 1978-03-23 Deutsche Forsch Luft Raumfahrt Verfahren zur nachrichtenreduzierenden codierung digitaler bildinformationen aequidistant abgetasteter bilder
JPS5413214A (en) * 1977-07-01 1979-01-31 Hitachi Ltd Delivery system of video signal
US4494144A (en) * 1982-06-28 1985-01-15 At&T Bell Laboratories Reduced bandwidth video transmission
EP0107426B1 (de) * 1982-10-14 1987-01-21 British Telecommunications Bildübertragung
JPS6075184A (ja) * 1983-09-30 1985-04-27 Nec Corp 動画像信号の符号化方式とその装置
US4598372A (en) * 1983-12-28 1986-07-01 Motorola, Inc. Apparatus and method of smoothing MAPS compressed image data
GB8502924D0 (en) * 1985-02-05 1985-03-06 British Telecomm Image encoding
US4686698A (en) * 1985-04-08 1987-08-11 Datapoint Corporation Workstation for interfacing with a video conferencing network
US4695883A (en) * 1985-10-24 1987-09-22 Concept Communications, Inc. Digital video compression system with variable digital filter
JPH0746869B2 (ja) * 1986-02-28 1995-05-17 株式会社東芝 擬似動画伝送方法

Also Published As

Publication number Publication date
US4935953A (en) 1990-06-19
DE69026415T2 (de) 1996-10-10
JPH0834585B2 (ja) 1996-03-29
EP0394606A3 (de) 1992-07-29
CA2000022A1 (en) 1990-10-27
EP0394606A2 (de) 1990-10-31
EP0394606B1 (de) 1996-04-10
JPH0321183A (ja) 1991-01-29
CA2000022C (en) 1995-02-07

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee