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JPS61103384A - Video communication system - Google Patents

Video communication system

Info

Publication number
JPS61103384A
JPS61103384A JP22555684A JP22555684A JPS61103384A JP S61103384 A JPS61103384 A JP S61103384A JP 22555684 A JP22555684 A JP 22555684A JP 22555684 A JP22555684 A JP 22555684A JP S61103384 A JPS61103384 A JP S61103384A
Authority
JP
Japan
Prior art keywords
video
terminal
control signal
signal processing
terminals
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
JP22555684A
Other languages
Japanese (ja)
Inventor
Fumio Kishino
岸野 文郎
Tadashi Takano
忠 高野
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 JP22555684A priority Critical patent/JPS61103384A/en
Publication of JPS61103384A publication Critical patent/JPS61103384A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To connect an optional terminal without installing a high-priced video line for the number of terminals only by connecting plural video terminals to one line, changing over to an optional terminal, connecting to a line wire and connecting extensions themselves. CONSTITUTION:When a control signal showing a connection of a line wire and the number of a video terminal 4 are put in from an operating device 15, these are converted to a format which can be decoded by plural terminal control devices 2 in a control signal processing part 18, and sent through a control signal channel 6 to a control signal processing part 24. A control signal processing part 24 controls an video sound changing-over part 23, connects an information channel of a terminal 1 to the line wire, and exchanges a communication network 3 and a control signal so as to connect with the video terminal 4. Next, when an extension number of a video terminal 1' is put in from the operating device 15, the control signal processing part 24 understands that an extension connection is executed, and calls and connects the video terminal 1' through an extension interface part 22.

Description

【発明の詳細な説明】 (1)発明の属する分野の説明 本発明は、ビデオ通信方式、特に1本の回線に複数のビ
デオ端末が接続された場合における通信制御方式に関す
るものである。
DETAILED DESCRIPTION OF THE INVENTION (1) Description of the field to which the invention pertains The present invention relates to a video communication system, and particularly to a communication control system when a plurality of video terminals are connected to one line.

(2)従来の技術の説明 従来のこの種方式では、1端末に1回線が接続されてい
た。従って使用頻度の少ない端末でも1回線が必要とな
っていた。また、例えば同一ビル内に複数の端末が設置
され、これらの端末相互間を接続する場合でも、一旦、
通信網の制御装置を介する必要があった。
(2) Description of conventional technology In this type of conventional system, one line was connected to one terminal. Therefore, even terminals that are used infrequently require one line. Also, for example, even if multiple terminals are installed in the same building and these terminals are connected to each other, once the
It was necessary to go through a communication network control device.

(3)発明の目的 本発明は、これらの欠点を除去するため、回線の切替制
御機能を有する装置を設け、該装置に複数のビデオ端末
を接続し、複数の端末の中から1つの端末を選択して外
部の端末と接続したり、また、該装置に接続される端末
同士を接続したりしたもので、以下図面について詳細に
説明する。
(3) Purpose of the Invention In order to eliminate these drawbacks, the present invention provides a device having a line switching control function, connects a plurality of video terminals to the device, and selects one terminal from among the plurality of terminals. The device can be selectively connected to an external terminal, or terminals connected to the device can be connected to each other.The drawings will be described in detail below.

(4)発明の構成および作用の説明 第1図は本発明の1実施例であって、1.1′は夫々ビ
デオ端末、2は複数端末制御装置、3は通信網、4はビ
デオ端末、5は情報チャネル、6は制御信号チャネル、
11はカメラ、12はモニタ、13はマイク、14はス
ピーカ、15は操作器、16は入出力機器制御部、17
は内線インタフェース部、18は制御信号処理部、21
.22は夫々内線インタフェース部、23は映゛像・音
声切替部、24は制御信号処理部、25は外線インタフ
ェース部である。
(4) Description of structure and operation of the invention FIG. 1 shows one embodiment of the invention, in which 1 and 1' are video terminals, 2 is a multi-terminal control device, 3 is a communication network, 4 is a video terminal, 5 is an information channel, 6 is a control signal channel,
11 is a camera, 12 is a monitor, 13 is a microphone, 14 is a speaker, 15 is an operator, 16 is an input/output device control unit, 17
18 is an extension interface section, 18 is a control signal processing section, and 21
.. 22 is an extension line interface section, 23 is a video/audio switching section, 24 is a control signal processing section, and 25 is an outside line interface section.

図を用いて、まず、ビデオ端末1が通信網3を介して、
ビデオ端末4に接続される動作を説明する。操作器15
から外線接続である旨を識別する制御信号(例えば“0
”)とビデオ端末4の番号とを投入すると、これらは、
制御信号処理部18において複数端末制御装置2で解読
できるフォーパ1、   ? −/ ) ItZ*mI
w−、M?I(S″+ + $ JL/ 6 ’ef’
t L゛m制御信号処理部24へ送られる。制御信号処
理部24では、映像・音声切替部23を制御し、端末1
の情報チャネルを外線に接続するとともに、ビデオ端末
4と接続するように通信網3と制御信号とのやりとりを
行う。このようにしてビデオ端末1から発呼して、ビデ
オ端末4と接続される。なお、外線インタフェース部2
5は、通信網3で規定されたインタフェースに変換する
ためのものであり、内線インタフェース部21.22は
各内線ビデオ端末1.1′とのインタフェースを合わせ
るためのものである。また、ビデオ端末1では、内線イ
ンタフェース部17により複数端末制御装置2とインタ
フェースが合わされ、カメラ11、モニタ12、マイク
13、スピーカ14の入出力機器は、入出力機器制御部
16と接続され、通常のテレビ会議端末と同様にして、
自画像のモニタ、あるいはハウリング防止のための音声
処理を行う。
Using the figure, first, the video terminal 1 connects via the communication network 3,
The operation of connecting to the video terminal 4 will be explained. Operator 15
A control signal that identifies an external line connection (for example, “0
”) and the number of video terminal 4, these are:
Forper 1, which can be decoded by the multi-terminal control device 2 in the control signal processing unit 18, ? −/ ) ItZ*mI
w-, M? I(S″+ + $ JL/ 6 'ef'
tLm is sent to the control signal processing section 24. The control signal processing unit 24 controls the video/audio switching unit 23 and
The information channel is connected to an outside line, and control signals are exchanged with the communication network 3 so as to be connected to the video terminal 4. In this way, the video terminal 1 makes a call and is connected to the video terminal 4. In addition, the external line interface section 2
5 is for converting to an interface defined by the communication network 3, and extension interface sections 21 and 22 are for matching the interface with each extension video terminal 1.1'. In addition, in the video terminal 1, the interface is combined with the multi-terminal control device 2 by the extension interface section 17, and the input/output devices such as the camera 11, monitor 12, microphone 13, and speaker 14 are connected to the input/output device control section 16, and the In the same way as the video conference terminal,
Monitor your self-portrait or perform audio processing to prevent howling.

次に通信網3内の任意のビデオ端末4から着呼があった
場合の動作を説明する。制御信号チャネルを介して通信
網3とやりとりをマ〒°゛3デ”端末      44
と複数端末制御装置2とが接続される。この場合、制御
信号チャネルでビデオ端末1の内線番号が指定されれば
、制御信号処理部24は映像・音声切替部23を制御し
、情報チャネルをビデオ端末1へ切替えるとともに、制
御信号チャネル6を介してビデオ端末1を呼び出し、制
御信号処理部18とやりとりを行い接続する。なお、内
線番号が制御信号チャネルを介して指定されない場合は
、複数端末制御装置2で予め設定されたビデオ端末に接
続される。
Next, the operation when there is an incoming call from any video terminal 4 within the communication network 3 will be explained. The terminal 44 communicates with the communication network 3 via the control signal channel.
and the multiple terminal control device 2 are connected. In this case, if the extension number of the video terminal 1 is specified in the control signal channel, the control signal processing section 24 controls the video/audio switching section 23 to switch the information channel to the video terminal 1, and also switches the control signal channel 6 to the video terminal 1. The video terminal 1 is called up via the video terminal 1, and communicated with and connected to the control signal processing section 18. Note that if the extension number is not specified via the control signal channel, the multi-terminal control device 2 connects to a preset video terminal.

次に、ビデオ端末1が複数端末制御装置2を介してビデ
オ端末1′に内線接続される動作を説明する。操作器1
5からビデオ端末1′の内線番号を投入すると、制御信
号処理部18及び制御信号チャネル6を介して制御信号
処理部24で内線接続であることを解し、(例えば“0
”が先頭に付いていないことにより識別する)、内線イ
ンタフェース部22を介してビデオ端末1′を呼び出し
接続する。なおビデオ端末1′の構成はビデオ端末1と
同様である。
Next, the operation of connecting the video terminal 1 to the video terminal 1' via an extension line via the multi-terminal control device 2 will be described. Controller 1
When inputting the extension number of the video terminal 1' from 5, the control signal processing section 24 understands that it is an extension connection via the control signal processing section 18 and the control signal channel 6, and inputs the extension number (for example, "0").
The video terminal 1' is called and connected via the extension interface section 22.The configuration of the video terminal 1' is the same as that of the video terminal 1.

内線接続の応用として、いまビデオ端末1が通信!ii
3を介してビデオ端末4に接続されているとき、ビデオ
端末lがビデオ端末1′を呼び出し、ビデオ端末1′に
接続替えする動作を説明する。ビデオ端末1が既に述べ
た手順によりビデオ端末4と接続されているとき、操作
器15により、通信中呼出しであることを識別する制御
信号(例えば“#”)とビデオ端末1′の内線番号とを
投入すると、これらの制御信号は、制御信号処理部18
、制御信号チャネル6を介し制御信号処理部24へ送出
され、一旦外線を保留したまま、映像・音声切替部23
を制御してビデオ端末1とビデオ端末1′との情報チャ
ネルを接続するとともに、ビデオ端末1′を呼出す。ビ
デオ端末1とビデオ端末1′とが接続された後、ビデオ
端末1がオンフックすると、制御信号処理部24の制御
により今まで保留されていた外線とビデオ端末1′とを
接続する。
As an application of extension connection, video terminal 1 is now communicating! ii
3, the video terminal 1 calls the video terminal 1' and changes the connection to the video terminal 1'. When the video terminal 1 is connected to the video terminal 4 according to the procedure already described, the controller 15 sends a control signal (e.g. "#") identifying a call in progress and an extension number of the video terminal 1'. , these control signals are processed by the control signal processing section 18.
, is sent to the control signal processing unit 24 via the control signal channel 6, and is sent to the video/audio switching unit 23 while temporarily holding the outside line.
, to connect the information channel between video terminal 1 and video terminal 1', and to call video terminal 1'. After the video terminal 1 and the video terminal 1' are connected, when the video terminal 1 goes on-hook, the outside line that has been on hold is connected to the video terminal 1' under the control of the control signal processing section 24.

映像・音声切替部23の動作を第2図を用いて詳述する
。第2図は映像・音声切替部23の1構成例であって、
26はスイッチマトリクス部、27はスイッチ駆動部で
ある。制御信号処理部24からの制御信号が映像・音声
切替部23へ送られると、スイッチ駆動部27で解読し
、スイッチマトリクス部26の所定のスイッチを閉じる
。例えば、ビデオ端末1と4が接続されるときはスイッ
チA、Cが、ビデオ端末1′と4が接続されるときはス
イッチB、Dが、ビデオ端末1と1′が接続されるとき
はスイッチE、Fが閉じられる。スイッチは電磁スイッ
チ、エミッタホロア等の半導体スイッチなどで実現され
る。説明では映像信号と音声信号とが一体化されている
ものとしたが、分離されている場合は映像信号は第2図
と同じ構成で実現でき、音声信号は通常の電話における
スイッチで構成できるので、ここでは説明を省略する。
The operation of the video/audio switching unit 23 will be explained in detail using FIG. 2. FIG. 2 shows an example of the configuration of the video/audio switching section 23,
26 is a switch matrix section, and 27 is a switch drive section. When the control signal from the control signal processing section 24 is sent to the video/audio switching section 23, it is decoded by the switch driving section 27 and a predetermined switch of the switch matrix section 26 is closed. For example, when video terminals 1 and 4 are connected, switches A and C are used, when video terminals 1' and 4 are connected, switches B and D are used, and when video terminals 1 and 1' are connected, switches are used. E and F are closed. The switch is realized by an electromagnetic switch, a semiconductor switch such as an emitter follower, or the like. In the explanation, it is assumed that the video signal and the audio signal are integrated, but if they are separated, the video signal can be realized with the same configuration as shown in Figure 2, and the audio signal can be configured with a switch in an ordinary telephone. , the explanation is omitted here.

上述の説明では、1本の外線に2端末が接続された場合
について説明したが、3以上の端末が接続されても同様
に構成することができる。
In the above description, a case has been described in which two terminals are connected to one outside line, but the same configuration can be made even if three or more terminals are connected.

(5)効果の説明 以上説明したように、本発明によれば、1本の鴇)  
  回線に複数のビデオ端末を接続し、任意の端末に切
替えて外線に接続したり、あるいは内線同士を接続でき
るようにしたものであるから、高価なビデオ回線を端末
数だけ引くことなしに、任意の端末と外線を接続するこ
とができ、かつ外部の制御装置を使うことなく内線端末
同士の接続ができる利点がある。
(5) Description of effects As explained above, according to the present invention, one hawk)
It allows you to connect multiple video terminals to a line and switch to any terminal to connect to an outside line, or to connect extensions to each other, so you can connect multiple video terminals to any number of terminals without having to add as many expensive video lines as the number of terminals. It has the advantage that it is possible to connect an external line to a terminal, and that extension terminals can be connected to each other without using an external control device.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の1実施例を示す図、第2図は映像・音
声切替部を示す図である。 1.1′・・・ビデオ端末、2・・・複数端末制御装置
、3・・・通信網、4・・・ビデオ端末、5・・・情報
チャネル、6・・・制御信号チャネル、11・・・カメ
ラ、12・・・モニタ、13・・・マイク、14・・・
スピーカ、15・・・操作器、16・・・入出力機器制
御部、17・・・内線インタフェース部、18・・・制
御信号処理部、21.22・・・内線インタフェース部
、23・・・映像・音声切替部、24・・・制御信号処
理部、25・・・外線インタフェース部、26・・・ス
イッチマトリクス部、27・・・スイッチ駆動部。
FIG. 1 is a diagram showing one embodiment of the present invention, and FIG. 2 is a diagram showing a video/audio switching section. 1.1'... Video terminal, 2... Multiple terminal control device, 3... Communication network, 4... Video terminal, 5... Information channel, 6... Control signal channel, 11. ...Camera, 12...Monitor, 13...Microphone, 14...
Speaker, 15... Controller, 16... Input/output device control section, 17... Extension interface section, 18... Control signal processing section, 21.22... Extension interface section, 23... Video/audio switching section, 24... Control signal processing section, 25... External line interface section, 26... Switch matrix section, 27... Switch driving section.

Claims (1)

【特許請求の範囲】[Claims] ビデオ端末相互間を相互に接続するビデオ通信方式にお
いて、外線と複数のビデオ端末との間で、各ビデオ端末
を星状に接続する制御装置を介し接続され、該制御装置
は、音声信号を含むビデオ信号を切替え得る広帯域スイ
ッチ、外線により接続される通信網とやりとりするため
の制御信号を解読しかつ内線により接続されるビデオ端
末とやりとりするための制御信号を解読する装置、及び
解読された各制御信号に基づき前記広帯域スイッチを駆
動する制御装置をもつよう構成され、外線及び内線は制
御信号と音声信号を含むビデオ信号とを伝送する手段を
有することを特徴とするビデオ通信方式。
In a video communication system that interconnects video terminals, an outside line and a plurality of video terminals are connected via a control device that connects each video terminal in a star shape, and the control device includes an audio signal. a broadband switch capable of switching video signals; a device for decoding control signals for communication with a communication network connected by an outside line; and a device for decoding control signals for communication with a video terminal connected by an extension; A video communication system, characterized in that it is configured to have a control device that drives the broadband switch based on a control signal, and the outside line and the extension line have means for transmitting the control signal and a video signal including an audio signal.
JP22555684A 1984-10-26 1984-10-26 Video communication system Pending JPS61103384A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22555684A JPS61103384A (en) 1984-10-26 1984-10-26 Video communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22555684A JPS61103384A (en) 1984-10-26 1984-10-26 Video communication system

Publications (1)

Publication Number Publication Date
JPS61103384A true JPS61103384A (en) 1986-05-21

Family

ID=16831141

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22555684A Pending JPS61103384A (en) 1984-10-26 1984-10-26 Video communication system

Country Status (1)

Country Link
JP (1) JPS61103384A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62178088A (en) * 1986-01-30 1987-08-05 Tokyo Electric Power Co Inc:The Information system
US5444477A (en) * 1992-10-23 1995-08-22 Hitachi, Ltd. Video telephone system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53116023A (en) * 1977-03-21 1978-10-11 Toshiba Corp Facsimile communication system for private branch
JPS58215187A (en) * 1982-06-07 1983-12-14 Nippon Telegr & Teleph Corp <Ntt> Multiground conference system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53116023A (en) * 1977-03-21 1978-10-11 Toshiba Corp Facsimile communication system for private branch
JPS58215187A (en) * 1982-06-07 1983-12-14 Nippon Telegr & Teleph Corp <Ntt> Multiground conference system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62178088A (en) * 1986-01-30 1987-08-05 Tokyo Electric Power Co Inc:The Information system
US5444477A (en) * 1992-10-23 1995-08-22 Hitachi, Ltd. Video telephone system

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