JPS5869148A - Data transmitter - Google Patents

Data transmitter

Info

Publication number
JPS5869148A
JPS5869148A JP56167653A JP16765381A JPS5869148A JP S5869148 A JPS5869148 A JP S5869148A JP 56167653 A JP56167653 A JP 56167653A JP 16765381 A JP16765381 A JP 16765381A JP S5869148 A JPS5869148 A JP S5869148A
Authority
JP
Japan
Prior art keywords
circuit
output
highway
data
transmission line
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
JP56167653A
Other languages
Japanese (ja)
Inventor
Yoshihisa Okamoto
岡本　善久
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56167653A priority Critical patent/JPS5869148A/en
Publication of JPS5869148A publication Critical patent/JPS5869148A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42—Loop networks

Abstract

PURPOSE:To easily extend a highway device, through the change in installation and termination of a transmission line without stopping the system operation, by providing a circuit giving an output of the data highway device to other highway devices and a circuit giving the output of the other devices to the transmission line. CONSTITUTION:A data transmitter 1A connected to loop transmission lines 3A, 3B is provided with signal converting circuits 6, 60, a synchronizing circuit 7 determining the internal timing of the device, and switching circuits 10, 11 connecting the device 1A to an extended data transmitter 1G. A terminal 2A is connected to the output side of a circuit 7 via an interface 8. When no extension request of a terminal device 2F is fed to the device 1G, the output of the circuit 60 is fed to the transmission line 3B via the switching circuit 10. When the extension request of the device 2F exists, the switching circuit 10 is switched, the output of the circuit 60 is applied to the device 1G, the output of the device 2F is outputted to the transmission line 3B via the device 1G and the switching circuit 11 to make the extension of the highway device easy.

Description

【発明の詳細な説明】 本発明はループ式データ伝送システムに使用されるデー
タ伝送装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a data transmission device used in a loop data transmission system.

従来のループ式データ伝送システムにおいては。In traditional loop data transmission systems.

第１図に示すように、接続される端末２の増設などによ
りデータ伝送装置４の増設が必要となった場合、運用中
のシステムを停止して伝送路３の布設接続変更を行って
いるのでμなはだ不便であった。As shown in Figure 1, when it becomes necessary to install more data transmission equipment 4 due to the addition of connected terminals 2, etc., the system in operation is stopped and the installation and connection of the transmission line 3 is changed. It was extremely inconvenient.

することなく容易に増設の可能なデータ伝送装置を提供
することにある。An object of the present invention is to provide a data transmission device that can be easily expanded without having to do anything.

本発明はループ状の伝送路により結合され、データの送
信受信を行うデータハイウェイ装置において、前記デー
タハイウェイ装置の出力を伝送路に接続されていない他
のデータハイウェイ装置へ導く回路と、前記他のデータ
ハイウェイ装置の出力を伝送路へ導く回路とを備え伝送
路に直接接続されていないデータハイウェイ装置を、伝
送路に接続された他のデータハイウェイ装置と接続する
ことによりループ状に結合できるようにしたものである
。The present invention relates to a data highway device connected by a loop-shaped transmission path and configured to transmit and receive data, including a circuit for guiding the output of the data highway device to another data highway device not connected to the transmission path, and a circuit for guiding the output of the data highway device to another data highway device not connected to the transmission path; A circuit that guides the output of the data highway device to the transmission path is provided, and the data highway device that is not directly connected to the transmission path can be connected in a loop by connecting it to other data highway devices connected to the transmission path. This is what I did.

次に図面を参照して本発明の詳細な説明する。Next, the present invention will be described in detail with reference to the drawings.

第２図は本発明の一実施例を示すブロック図で第３図は
本発明の装置を使用して端末を増設したときのシステム
拡張、り図である。FIG. 2 is a block diagram showing an embodiment of the present invention, and FIG. 3 is a diagram showing system expansion when terminals are added using the apparatus of the present invention.

図において１本発明のデータ伝送装置ＩＡは、伝送路３
Ａからの信号を送信受信する信号変換回路６および６０
と、装置の内部タイミングを決定する同期回路７と、端
末２人とのデータの送受信を行うインターフェース回路
８と、増設された装置ＩＧに装置ＩＡを接続するための
切換回路１０および１１とから構成されている。端末２
Ｆの増設要求がない場合には、信号変換回路６ｏの出力
換えることにより信号変換回路６０の出力は装置ＩＧに
導かれる。また、端末２Ｆの出力は装置ＩＧおよび切換
回路１１を介して伝送路３Ｂへ導かする。In the figure, 1 the data transmission device IA of the present invention has a transmission path 3.
Signal conversion circuits 6 and 60 that transmit and receive signals from A
, a synchronization circuit 7 that determines the internal timing of the device, an interface circuit 8 that sends and receives data to and from two terminals, and switching circuits 10 and 11 that connect the device IA to the added device IG. has been done. Terminal 2
If there is no request to add F, the output of the signal conversion circuit 60 is guided to the device IG by changing the output of the signal conversion circuit 6o. Further, the output of the terminal 2F is guided to the transmission line 3B via the device IG and the switching circuit 11.

このような切換回路１０および１１を付加することによ
りデータ伝送装置を伝送路に直接接続することなくルー
プ内に組み入れることが可能であるため装置の新設ある
いはシステム試験での試験装第４図は本発明のデζり伝
送装置を光データリンクに応用したときのブロック図テ
アル。By adding such switching circuits 10 and 11, it is possible to incorporate the data transmission device into the loop without directly connecting it to the transmission line. 1 is a block diagram showing the application of the inventive digital transmission device to an optical data link.

図中、１３．１３’は光−電気選択回路、１４は光−電
気変換回路、さらに１５は電気−光変換回路である。In the figure, 13 and 13' are an optical-electrical selection circuit, 14 is an optical-electrical conversion circuit, and 15 is an electrical-optical conversion circuit.

本発明の伝送装置を使用することによハ光伝送路２１で
構成された光データハイウェイシステムの端末増設にも
対処でき、容易にシステム拡張が可能となる。By using the transmission device of the present invention, it is possible to cope with the addition of terminals in an optical data highway system constituted by the optical transmission line 21, and the system can be easily expanded.

以上のように１本発明によるデータ伝送装置を使用すれ
ば、データハイウェイ装置の増設が容易に行えるという
効果がある。As described above, by using the data transmission device according to the present invention, it is possible to easily expand the number of data highway devices.

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

第１図は従来のデータ伝送装置の増設を説明する図、第
２図は本発明の一実施例を示すブロック図、第３図は本
発明を使用したときの装置の増設を説明する図および第
４図は本発明装置の光データリンクへの応用を説明する
図である。 第１図〜第４図において％　　１−ＩＡ、ＩＧ・・・・
・・データ装！、、２．２Ａ〜２Ｆ・・印・端末装置、
３・・旧ループ状伝送路、ＩＧ・・・・・・増設したデ
ータ伝送装置、５・・・・・・縦続接続ケーブル、６．
６０・・用信号変換回路、７・・・・・・同期回路、８
・・・・・・インターフェース回路、１０．１１・・川
・切換回路、１２・・・・・・接続さｎるデータハイウ
ェイ装置％１３，１３’・、用■切換回路、１４・・・
・・・光−電気変換回路、１５・・川・電気−光変換回
路。 第１図 ＠２図 ２Ｆ 第３図 Ｌ−−−−−、、−ＪFIG. 1 is a diagram illustrating the addition of a conventional data transmission device, FIG. 2 is a block diagram showing an embodiment of the present invention, and FIG. 3 is a diagram illustrating the addition of a device when the present invention is used. FIG. 4 is a diagram illustrating the application of the device of the present invention to an optical data link. In Figures 1 to 4, % 1-IA, IG...
...Data equipment! ,,2.2A~2F...mark/terminal device,
3... Old loop transmission line, IG... Added data transmission device, 5... Cascade connection cable, 6.
60... signal conversion circuit, 7... synchronization circuit, 8
...Interface circuit, 10.11...Switching circuit, 12...Connected data highway device %13,13', ■Switching circuit, 14...
...Optical-electrical conversion circuit, 15... River, electrical-optical conversion circuit. Figure 1 @ Figure 2 2F Figure 3 L-----, -J

Claims (1)

【特許請求の範囲】[Claims] ループ状伝送路に接続され前記ループ状伝送路を介して
データの送信受信を行うデータ伝送装置において、前記
データ伝送装置の出力を前記ループ状伝送路に接続され
た前記データ伝送装置以外の他のデータ伝送装置に与え
るための第１の切換回路と、前記他のデータ伝送装置か
ら与えられる信号を前記データ伝送装置に与えるための
第２の切換回路とを設けたことを特徴とするデータ伝送
装置。In a data transmission device connected to a loop-shaped transmission path and transmitting and receiving data via the loop-shaped transmission path, the output of the data transmission device is transmitted to another data transmission device other than the data transmission device connected to the loop-shaped transmission path. A data transmission device comprising: a first switching circuit for applying a signal to the data transmission device; and a second switching circuit for applying a signal from the other data transmission device to the data transmission device. .
JP56167653A 1981-10-20 1981-10-20 Data transmitter Pending JPS5869148A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56167653A JPS5869148A (en) 1981-10-20 1981-10-20 Data transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56167653A JPS5869148A (en) 1981-10-20 1981-10-20 Data transmitter

Publications (1)

Publication Number Publication Date
JPS5869148A true JPS5869148A (en) 1983-04-25

Family

ID=15853743

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56167653A Pending JPS5869148A (en) 1981-10-20 1981-10-20 Data transmitter

Country Status (1)

Country Link
JP (1) JPS5869148A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5437794A (en) * 1977-08-31 1979-03-20 Fujitsu Ltd Infrared ray detector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5437794A (en) * 1977-08-31 1979-03-20 Fujitsu Ltd Infrared ray detector

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