GB2384932B - Video conferencing system and method of operation - Google Patents

Video conferencing system and method of operation

Info

Publication number
GB2384932B
GB2384932B GB0202101A GB0202101A GB2384932B GB 2384932 B GB2384932 B GB 2384932B GB 0202101 A GB0202101 A GB 0202101A GB 0202101 A GB0202101 A GB 0202101A GB 2384932 B GB2384932 B GB 2384932B
Authority
GB
United Kingdom
Prior art keywords
video conferencing
conferencing system
video
conferencing
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
GB0202101A
Other versions
GB0202101D0 (en
GB2384932A (en
Inventor
Arthur Lallet
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Priority to GB0202101A priority Critical patent/GB2384932B/en
Publication of GB0202101D0 publication Critical patent/GB0202101D0/en
Priority to PCT/EP2002/014337 priority patent/WO2003065720A1/en
Priority to CNA028277430A priority patent/CN1618233A/en
Priority to JP2003565169A priority patent/JP2005516557A/en
Priority to KR10-2004-7011846A priority patent/KR20040079973A/en
Publication of GB2384932A publication Critical patent/GB2384932A/en
Priority to HK04100650A priority patent/HK1058450A1/en
Application granted granted Critical
Publication of GB2384932B publication Critical patent/GB2384932B/en
Priority to FI20041039A priority patent/FI20041039A/en
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
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/234327—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by decomposing into layers, e.g. base layer and one or more enhancement layers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/24—Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests
    • H04N21/2402—Monitoring of the downstream path of the transmission network, e.g. bandwidth available
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
    • H04N21/25808—Management of client data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
    • H04N21/26208—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints
    • H04N21/26216—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints involving the channel capacity, e.g. network bandwidth
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/2662—Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
    • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • H04N21/440227—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by decomposing into layers, e.g. base layer and one or more enhancement layers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4621—Controlling the complexity of the content stream or additional data, e.g. lowering the resolution or bit-rate of the video stream for a mobile client with a small screen
    • 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
    • H04N7/147—Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/15—Conference systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/15—Conference systems
    • H04N7/152—Multipoint control units therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Computer Graphics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Software Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Telephonic Communication Services (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
GB0202101A 2002-01-30 2002-01-30 Video conferencing system and method of operation Expired - Fee Related GB2384932B (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB0202101A GB2384932B (en) 2002-01-30 2002-01-30 Video conferencing system and method of operation
PCT/EP2002/014337 WO2003065720A1 (en) 2002-01-30 2002-12-16 Video conferencing and method of operation
CNA028277430A CN1618233A (en) 2002-01-30 2002-12-16 Video conferencing system and method of operation
JP2003565169A JP2005516557A (en) 2002-01-30 2002-12-16 Video conferencing system and operation method
KR10-2004-7011846A KR20040079973A (en) 2002-01-30 2002-12-16 Video conferencing and method of operation
HK04100650A HK1058450A1 (en) 2002-01-30 2004-01-30 Video conferencing system and method of operation
FI20041039A FI20041039A (en) 2002-01-30 2004-07-29 Video conferencing and implementation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0202101A GB2384932B (en) 2002-01-30 2002-01-30 Video conferencing system and method of operation

Publications (3)

Publication Number Publication Date
GB0202101D0 GB0202101D0 (en) 2002-03-13
GB2384932A GB2384932A (en) 2003-08-06
GB2384932B true GB2384932B (en) 2004-02-25

Family

ID=9930013

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0202101A Expired - Fee Related GB2384932B (en) 2002-01-30 2002-01-30 Video conferencing system and method of operation

Country Status (7)

Country Link
JP (1) JP2005516557A (en)
KR (1) KR20040079973A (en)
CN (1) CN1618233A (en)
FI (1) FI20041039A (en)
GB (1) GB2384932B (en)
HK (1) HK1058450A1 (en)
WO (1) WO2003065720A1 (en)

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US8659636B2 (en) 2003-10-08 2014-02-25 Cisco Technology, Inc. System and method for performing distributed video conferencing
JP2006067124A (en) * 2004-08-25 2006-03-09 Nec Corp Method and device for switching image encoded data, system, and program
CN100417220C (en) * 2004-09-28 2008-09-03 中兴通讯股份有限公司 Method for holding multi-point video conference by terminal dialing
FR2875665A1 (en) * 2005-01-04 2006-03-24 France Telecom Video bit stream highlighting method for transmitting stream to videoconference participants, involves adjusting value of encoding quality parameter of video bit stream based on measured value of predefined parameter of audio bit stream
US7535484B2 (en) 2005-03-14 2009-05-19 Sony Ericsson Mobile Communications Ab Communication terminals that vary a video stream based on how it is displayed
CN100401765C (en) * 2005-03-24 2008-07-09 华为技术有限公司 Video conference controlling method
US20060244813A1 (en) * 2005-04-29 2006-11-02 Relan Sandeep K System and method for video teleconferencing via a video bridge
JP5265383B2 (en) * 2005-09-07 2013-08-14 ヴィドヨ，インコーポレーテッド System and method for conference server architecture for low latency and distributed conferencing applications
JP2009507450A (en) 2005-09-07 2009-02-19 ヴィドヨ，インコーポレーテッド System and method for reliable base layer trunk
KR100695206B1 (en) 2005-09-12 2007-03-14 엘지전자 주식회사 Mobile communication terminal for sharing device buffer and sharing buffer method using the same
JP2007158410A (en) 2005-11-30 2007-06-21 Sony Computer Entertainment Inc Image encoder, image decoder, and image processing system
US8436889B2 (en) 2005-12-22 2013-05-07 Vidyo, Inc. System and method for videoconferencing using scalable video coding and compositing scalable video conferencing servers
KR100666995B1 (en) * 2006-01-16 2007-01-10 삼성전자주식회사 Method and system for providing the differential media data of meltimedia conference
US7822811B2 (en) * 2006-06-16 2010-10-26 Microsoft Corporation Performance enhancements for video conferencing
WO2008042852A2 (en) 2006-09-29 2008-04-10 Vidyo, Inc. System and method for multipoint conferencing with scalable video coding servers and multicast
US8773494B2 (en) * 2006-08-29 2014-07-08 Microsoft Corporation Techniques for managing visual compositions for a multimedia conference call
US8334891B2 (en) 2007-03-05 2012-12-18 Cisco Technology, Inc. Multipoint conference video switching
US8264521B2 (en) 2007-04-30 2012-09-11 Cisco Technology, Inc. Media detection and packet distribution in a multipoint conference
KR100874024B1 (en) * 2007-09-18 2008-12-17 주식회사 온게임네트워크 Station and method for internet broadcasting interaction type-content and record media recoded program realizing the same
EP2046041A1 (en) * 2007-10-02 2009-04-08 Alcatel Lucent Multicast router, distribution system,network and method of a content distribution
US7869705B2 (en) 2008-01-21 2011-01-11 Microsoft Corporation Lighting array control
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US8319820B2 (en) * 2008-06-23 2012-11-27 Radvision, Ltd. Systems, methods, and media for providing cascaded multi-point video conferencing units
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KR101234495B1 (en) * 2009-10-19 2013-02-18 한국전자통신연구원 Terminal, node device and method for processing stream in video conference system
US8780978B2 (en) 2009-11-04 2014-07-15 Qualcomm Incorporated Controlling video encoding using audio information
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Also Published As

Publication number Publication date
WO2003065720A1 (en) 2003-08-07
HK1058450A1 (en) 2004-05-14
GB0202101D0 (en) 2002-03-13
JP2005516557A (en) 2005-06-02
KR20040079973A (en) 2004-09-16
CN1618233A (en) 2005-05-18
FI20041039A (en) 2004-09-29
GB2384932A (en) 2003-08-06

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