JPS56100557A - Picture conference communication system - Google Patents

Picture conference communication system

Info

Publication number
JPS56100557A
JPS56100557A JP312280A JP312280A JPS56100557A JP S56100557 A JPS56100557 A JP S56100557A JP 312280 A JP312280 A JP 312280A JP 312280 A JP312280 A JP 312280A JP S56100557 A JPS56100557 A JP S56100557A
Authority
JP
Japan
Prior art keywords
picture
signal
select
select signal
picture signal
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.)
Pending
Application number
JP312280A
Other languages
Japanese (ja)
Inventor
Kazunori Shimamura
Yoshibumi Sakasai
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP312280A priority Critical patent/JPS56100557A/en
Publication of JPS56100557A publication Critical patent/JPS56100557A/en
Pending 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To obtain an optimum picture according to the advance of the conference, by making it possible to switch image pickup means mutually, in the picture conference communication system connecting two conference rooms distant from each other which have plural image pickup means respectively. CONSTITUTION:In respect to selection of the picture signal transmitted from the picture conference terminal in the A side, the attendant in the B side operates selectively picture select switch 5B in its own side, and a select signal is generated by select signal generator 13B. This select signal is synthesized with the picture signal from picture signal switching device 7B by select signal synthesizing device 14B and is sent to select signal separating device 15A through picture signal transmission control devices 8B and 8A. Then, the select signal separated from the picture signal is sent to picture signal switching circuit control device 16A to operate picture signal switching circuit 7A selectively.
JP312280A 1980-01-17 1980-01-17 Picture conference communication system Pending JPS56100557A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP312280A JPS56100557A (en) 1980-01-17 1980-01-17 Picture conference communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP312280A JPS56100557A (en) 1980-01-17 1980-01-17 Picture conference communication system

Publications (1)

Publication Number Publication Date
JPS56100557A true JPS56100557A (en) 1981-08-12

Family

ID=11548546

Family Applications (1)

Application Number Title Priority Date Filing Date
JP312280A Pending JPS56100557A (en) 1980-01-17 1980-01-17 Picture conference communication system

Country Status (1)

Country Link
JP (1) JPS56100557A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997018663A1 (en) * 1995-11-15 1997-05-22 Sony Corporation Video conference system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS505889A (en) * 1973-05-18 1975-01-22
JPS512351A (en) * 1974-05-23 1976-01-09 Nippon Telegraph & Telephone ENKAKUSOSASEISHIGAZOSATSUZOSOCHI

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS505889A (en) * 1973-05-18 1975-01-22
JPS512351A (en) * 1974-05-23 1976-01-09 Nippon Telegraph & Telephone ENKAKUSOSASEISHIGAZOSATSUZOSOCHI

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997018663A1 (en) * 1995-11-15 1997-05-22 Sony Corporation Video conference system

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