DE69214036T2 - Multipoint-Telekonferenz-System mit Anwendung von "H. 221 Frames" - Google Patents

Multipoint-Telekonferenz-System mit Anwendung von "H. 221 Frames"

Info

Publication number
DE69214036T2
DE69214036T2 DE69214036T DE69214036T DE69214036T2 DE 69214036 T2 DE69214036 T2 DE 69214036T2 DE 69214036 T DE69214036 T DE 69214036T DE 69214036 T DE69214036 T DE 69214036T DE 69214036 T2 DE69214036 T2 DE 69214036T2
Authority
DE
Germany
Prior art keywords
frames
teleconferencing system
multipoint teleconferencing
multipoint
teleconferencing
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
DE69214036T
Other languages
English (en)
Other versions
DE69214036D1 (de
Inventor
Yoji Shibata
Masaaki Takizawa
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of DE69214036D1 publication Critical patent/DE69214036D1/de
Application granted granted Critical
Publication of DE69214036T2 publication Critical patent/DE69214036T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/562—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities where the conference facilities are distributed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/567—Multimedia 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
    • H04N7/141—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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13209—ISDN
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13337—Picturephone, videotelephony
DE69214036T 1991-07-15 1992-07-14 Multipoint-Telekonferenz-System mit Anwendung von "H. 221 Frames" Expired - Fee Related DE69214036T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17403191A JP3308563B2 (ja) 1991-07-15 1991-07-15 多地点テレビ会議システム

Publications (2)

Publication Number Publication Date
DE69214036D1 DE69214036D1 (de) 1996-10-31
DE69214036T2 true DE69214036T2 (de) 1997-05-15

Family

ID=15971424

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69214036T Expired - Fee Related DE69214036T2 (de) 1991-07-15 1992-07-14 Multipoint-Telekonferenz-System mit Anwendung von "H. 221 Frames"

Country Status (6)

Country Link
US (3) US5402418A (de)
EP (1) EP0523629B1 (de)
JP (1) JP3308563B2 (de)
AU (1) AU644532B2 (de)
CA (1) CA2073925C (de)
DE (1) DE69214036T2 (de)

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Also Published As

Publication number Publication date
JPH0522322A (ja) 1993-01-29
DE69214036D1 (de) 1996-10-31
EP0523629A1 (de) 1993-01-20
AU644532B2 (en) 1993-12-09
US5604738A (en) 1997-02-18
CA2073925A1 (en) 1993-01-16
EP0523629B1 (de) 1996-09-25
US5402418A (en) 1995-03-28
AU1967592A (en) 1993-03-11
JP3308563B2 (ja) 2002-07-29
CA2073925C (en) 1998-02-03
US5970054A (en) 1999-10-19

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