JPS63114328A - Sub-signal transmission system - Google Patents
Sub-signal transmission systemInfo
- Publication number
- JPS63114328A JPS63114328A JP61260468A JP26046886A JPS63114328A JP S63114328 A JPS63114328 A JP S63114328A JP 61260468 A JP61260468 A JP 61260468A JP 26046886 A JP26046886 A JP 26046886A JP S63114328 A JPS63114328 A JP S63114328A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- sub
- main digital
- sub signal
- relay device
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 33
- 230000003287 optical effect Effects 0.000 claims abstract description 30
- 238000003780 insertion Methods 0.000 claims abstract description 13
- 230000037431 insertion Effects 0.000 claims abstract description 13
- 238000000926 separation method Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 13
- 238000010586 diagram Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Optical Communication System (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ディジタル光通信装置の副信号伝送方式に関
する。特に、中間中継装置の低消費電力化が必要な場合
の監視制御信号および打ち合わせ用電話などの画信号伝
送装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sub-signal transmission system for a digital optical communication device. In particular, the present invention relates to image signal transmission devices such as supervisory control signals and meeting telephones when lower power consumption of intermediate relay devices is required.
本発明は、ディジタル光通信の副信号伝送方式において
、
対向する端局中継装置間の副信号の伝送は、主ディジタ
ル信号に副信号をディジタル的にビット挿入して行い、
中間中継装置間および中間中継装置と端局中継装置との
間の副信号の伝送は、主ディジタル信号に対応する光信
号の振幅を副信号によりアナログ的に変調して行うこと
により、中間中継装置では消費電力が少なく、端局中継
装置では十分な副信号の伝送容量を確保できるようにし
たものである。The present invention provides a sub-signal transmission system for digital optical communication, in which the sub-signal is transmitted between opposing end station relay devices by digitally inserting bits of the sub-signal into the main digital signal.
Transmission of sub-signals between intermediate repeating devices and between intermediate repeating devices and end-station repeating devices is carried out by analog modulating the amplitude of the optical signal corresponding to the main digital signal using the sub-signals. The power consumption is low, and the terminal relay device can secure sufficient sub-signal transmission capacity.
従来副信号伝送方式は、端局中継装置間、中間中継装置
間および端局中継装置と中間中継装置間の副信号の伝送
を主ディジタル信号に副信号をディジタル的にビット挿
入して行う第一の方式と、主ディジタル信号に対応する
光信号の振幅成分を副信号によりアナログ的に変調して
行う第二の方式の二種類の方式があった。The conventional sub-signal transmission method is a first method in which sub-signals are transmitted between terminal repeaters, between intermediate repeaters, and between terminal repeaters and intermediate repeaters by digitally inserting bits of the sub-signal into the main digital signal. There were two types of systems: the first method, and the second method in which the amplitude component of the optical signal corresponding to the main digital signal was modulated in an analog manner with a sub signal.
近年の光通信装置の適用領域の拡大に伴い、マンホール
等に設置される副信号伝送可能な中間中継装置または太
陽電池等で動作する副信号伝送可能な中間中継装置の実
現が必要となっている。このような中間中継装置の実現
のためにはマンホール等に設置される場合は遠方給電を
行うため中継装置の低消費電力化が必要となり、太陽電
池等で動作する場合は太陽電池装置のコスト等を考慮す
ると同様に低消費電力化が必要となる。With the expansion of the application range of optical communication equipment in recent years, it has become necessary to realize intermediate relay devices that can be installed in manholes, etc., and can transmit sub signals, or intermediate relay devices that can operate on solar cells, etc., and can transmit sub signals. . In order to realize such an intermediate relay device, if it is installed in a manhole etc., it will be necessary to reduce the power consumption of the relay device to perform long-distance power supply, and if it is operated by solar cells, etc., the cost of the solar battery device etc. will be reduced. Considering this, lower power consumption is also required.
しかし、上述のような副信号伝送方式では、第一の方式
の場合には、副信号をディジタル的に処理しているため
に、中間中継装置内部に主ディジタル信号から副信号を
分離するためにフレーム同期回路および副信号分離挿入
回路等が必要であり回路規模が著しく増大し、かつ、高
速のディジタル処理を行うために、中間中継装置の消費
電力は増大し、上述の遠方給電装置および太陽電池装置
での構成は不可能な欠点があった。一方、第二の方式の
場合には、副信号でアナログ的に主ディジタル光信号を
変調するため第一の方式より回路構成が簡素化されるた
め低消費電力化は可能となるが、副信号で主ディジタル
光信号をアナログ的に変調するために伝送する副信号の
情報量が制限され、第一の方式に比べて伝送する副信号
の伝送容量が少ない欠点があった。However, in the sub-signal transmission method described above, in the case of the first method, since the sub-signal is processed digitally, there is a process inside the intermediate repeater to separate the sub-signal from the main digital signal. Frame synchronization circuits, sub-signal separation/insertion circuits, etc. are required, which significantly increases the circuit scale, and in order to perform high-speed digital processing, the power consumption of intermediate relay devices increases, and the above-mentioned remote power supply devices and solar cells There was a drawback that it was impossible to configure the device. On the other hand, in the case of the second method, since the main digital optical signal is modulated analogously with the sub signal, the circuit configuration is simpler than in the first method, and lower power consumption is possible. Since the main digital optical signal is modulated in an analog manner, the amount of information of the sub signal to be transmitted is limited, and compared to the first method, the transmission capacity of the sub signal to be transmitted is smaller.
本発明は上記の欠点を解決するもので、中間中継装置で
は消費電力が少なく、端局中継装置間では十分な副信号
の伝送容量を確保できる副信号伝送方式を提供すること
を目的とする。The present invention solves the above-mentioned drawbacks, and aims to provide a sub-signal transmission method that consumes less power in an intermediate relay device and can ensure sufficient sub-signal transmission capacity between end-station relay devices.
本発明は、対向する一組の端局中継装置と、こ
′の対向する一組の端局中継装置間に接続された中間中
継装置とを備えた副信号伝送方式において、上記端局中
継装置および上記中間中継装置はそれぞれ、主ディジタ
ル光信号の振幅を副信号により変調して伝送し、伝送さ
れた主ディジタル光信号から副信号を分離する副信号ア
ナログ変調分離回路を含み、上記端局中継装置は、主デ
ィジタル信号に副信号をディジタル的にビット挿入して
伝送し、伝送されてきた主ディジタル信号から副信号を
分離する副信号ディジタル挿入分離回路を含むことを特
徴とする。The present invention comprises a pair of terminal relay devices facing each other, and
In the sub-signal transmission method, the terminal-office repeating device and the intermediate repeating device each sub-signal the amplitude of the main digital optical signal. The terminal relay device includes a sub-signal analog modulation separation circuit that modulates and transmits the sub-signal from the transmitted main digital optical signal, and the terminal relay device digitally inserts bits of the sub-signal into the main digital signal. It is characterized in that it includes a sub-signal digital insertion/separation circuit that separates the sub-signal from the transmitted main digital signal.
端局中継装置間の副信号の伝送は、副信号ディジタル挿
入分離回路で主ディジタル信号に副信号をディジタル的
にビット挿入して伝送し、端局中継装置と中間中継装置
との間および中間中継装置間の副信号の伝送は、副信号
アナログ変調分離回路で副信号により主ディジタル光信
号を振幅変調することにより伝送する。これにより中間
中継装置では消費電力が少なく、端局中継装置では十分
な副信号の伝送容量を確保できる。For transmission of sub-signals between end-station relay devices, a sub-signal digital insertion/separation circuit digitally inserts bits of the sub-signal into the main digital signal and transmits the sub-signal between the end-office relay device and intermediate relay device and between intermediate relay devices. The sub-signal is transmitted between devices by amplitude modulating the main digital optical signal with the sub-signal in a sub-signal analog modulation/separation circuit. As a result, the intermediate relay device consumes less power, and the terminal relay device can ensure sufficient sub-signal transmission capacity.
本発明の実施例について図面を参照して説明する。 Embodiments of the present invention will be described with reference to the drawings.
第１図は本発明一実施例副信号伝送装置のブロック構成
図である。第１図において、副信号伝送装置は、端局中
継装置Ｉｔ、１ｇと、中間中継装置２１．２□とを備え
る。本実施例では中間中継装置２の台数を２台としたが
１台または３台以上でもよい。FIG. 1 is a block diagram of a sub-signal transmission device according to an embodiment of the present invention. In FIG. 1, the sub-signal transmission device includes a terminal relay device It, 1g and an intermediate relay device 21.2□. In this embodiment, the number of intermediate relay devices 2 is two, but it may be one or three or more.
端局中継装置ｌは、主ディジタル信号３に対して副信号
４の変調および分離が行われ中間中継装置２１．２□と
の伝送が行われる副信号アナログ変調分離部１０と、主
ディジタル信号３に対して副信号５の挿入および分離が
行われ、端局中継装置１間の副信号の伝送が行われる副
信号ディジタル・挿入分離部１）とを含む。The terminal relay device 1 includes a sub-signal analog modulation and separation section 10 that modulates and separates the sub-signal 4 from the main digital signal 3 and transmits the sub-signal 4 to the intermediate repeating device 21.2□, and the main digital signal 3. The sub signal digital insertion/separation unit 1) inserts and separates a sub signal 5 into and from the sub signal 5, and transmits the sub signal between the terminal relay devices 1.
また中間中継装置２は、主ディジタル信号３に対して副
信号４の変調および分離が行われ端局中継装置１との間
および中間中継装置２相互間の副信号の伝送が行われる
副信号アナログ変調分離部２０を含む。The intermediate relay device 2 also modulates and separates a sub signal 4 from the main digital signal 3, and transmits the sub signal to the terminal relay device 1 and between the intermediate relay devices 2. It includes a modulation separation section 20.
このような構成の副信号伝送装置の動作について説明す
る。端局中継装置１８．１□では、副信号アナログ変調
分離部１０６．１０□で主ディジタル信号３に対して副
信号４の変調および分離が行われ、ディジタル挿入分離
部１）１．１）□で副信号５の挿入および分離が行われ
る。一方、中間中継装置２１．２□では、主ディジタル
信号３は従来通りに再生中継され、副信号アナログ変調
分離部２０１．２０□で主ディジタル光信号に対して副
信号４の変調および分離が行われ、副信号４は各装置間
を伝送される。したがって、副信号４はすべての装置間
で伝送可能である。一方、主ディジタル信号３にディジ
タル的にビット挿入される副信号５は端局中継装置ｌ９
．１□間で伝送可能である。The operation of the sub-signal transmission device having such a configuration will be explained. In the terminal relay device 18.1□, the sub signal analog modulation and separation section 106.10□ modulates and separates the sub signal 4 from the main digital signal 3, and the digital insertion and separation section 1)1.1)□ Insertion and separation of the sub-signal 5 are performed at . On the other hand, in the intermediate repeater 21.2□, the main digital signal 3 is regenerated and relayed as before, and the sub-signal analog modulation and separation section 201.20□ modulates and separates the sub-signal 4 from the main digital optical signal. The sub-signal 4 is transmitted between each device. Therefore, the sub-signal 4 can be transmitted between all devices. On the other hand, the sub signal 5 whose bits are digitally inserted into the main digital signal 3 is transmitted to the terminal relay device l9.
．． Transmission is possible between 1□.
第２図は本発明の副信号伝送装置の端局中継装置のブロ
ック構成図である。主ディジタル信号３は、ビット挿入
回路１２により副信号インタフェース回路１３から入力
された副信号５がビット挿入され、電気・光変換回路１
４に入力される。電気・光変換回路１４で副信号インタ
フェース回路１５から入力された副信号４により主ディ
ジタル光信号の振幅が変調され、出力端子１６を介して
伝送路に送出される。FIG. 2 is a block diagram of the terminal relay device of the sub-signal transmission device of the present invention. A bit insertion circuit 12 inserts bits of the sub signal 5 inputted from the sub signal interface circuit 13 into the main digital signal 3 , and the bit insertion circuit 12 inserts the sub signal 5 inputted from the sub signal interface circuit 13 into the main digital signal 3 .
4 is input. The electrical/optical conversion circuit 14 modulates the amplitude of the main digital optical signal using the sub signal 4 input from the sub signal interface circuit 15, and sends it out to the transmission line via the output terminal 16.
一方、入力端子１７より入力された光信号は光・電気変
換回路１８で光・電気変換された後にアナログ変調され
た主ディジタル光信号から副信号４が分離され、ビット
分離回路１９でビット挿入された副信号５が主ディジタ
ル信号３より分離される。On the other hand, the optical signal inputted from the input terminal 17 is subjected to optical-to-electrical conversion in an optical-to-electrical conversion circuit 18, and then a sub-signal 4 is separated from the analog-modulated main digital optical signal, and a bit is inserted in a bit separation circuit 19. A sub-signal 5 is separated from the main digital signal 3.
第３図は本発明の副信号伝送装置の中間中継装置のブロ
ック構成図である。入力端子２１を介して入力した光信
号は光・電気変換回路２２で電気信号に変換された後に
、アナログ変調された主ディジタル光信号から副信号４
が分離され、副信号インタフェース回路２３に出力され
る。また主ディジタル信号３およびビット挿入された副
信号５はそのまま電気・光変換回路２４に入力され副信
号インタフェース回路２３より入力された副信号４によ
り主ディジタル光信号の振幅が変調される。FIG. 3 is a block diagram of the intermediate relay device of the sub-signal transmission device of the present invention. The optical signal input through the input terminal 21 is converted into an electrical signal by the optical/electrical conversion circuit 22, and then converted from the analog modulated main digital optical signal to the sub signal 4.
is separated and output to the sub-signal interface circuit 23. Further, the main digital signal 3 and the bit-inserted sub-signal 5 are input as they are to the electro-optical conversion circuit 24, and the sub-signal 4 input from the sub-signal interface circuit 23 modulates the amplitude of the main digital optical signal.
第４図は本発明の副信号伝送装置のディジタル的に副信
号がビット挿入された主ディジタル信号を示す図である
。第４図において、２６は副信号用ビットおよび２７は
主ディジタル信号用ビットを示す。FIG. 4 is a diagram showing a main digital signal into which sub-signal bits are digitally inserted in the sub-signal transmission apparatus of the present invention. In FIG. 4, 26 indicates a sub signal bit and 27 indicates a main digital signal bit.
第５図は本発明の副信号伝送装置のアナログ的に副信号
により変調された主ディジタル信号を示す図である。２
８は副信号（光信号）および２９は主ディジクル信号（
光信号）を示す。FIG. 5 is a diagram showing a main digital signal modulated in an analog manner by a sub signal of the sub signal transmission device of the present invention. 2
8 is a sub signal (optical signal) and 29 is a main digital signal (
optical signal).
以上説明したように、本発明は、端局中継装置間の副信
号の伝送にはディジタル的に挿入された副信号を伝送し
、中間中継装置部および中間中継装置と端局中継装置と
の間の副信号の伝送にはアナログ的に主ディジタル光信
号を副信号で変調して伝送することにより、中間中ｍ装
置は副信号を伝送可能で消費電力が少なく、端局中継装
置間はさらに独立した副信号の伝送が可能であり十分な
副信号の伝送容量が確保できる優れた効果がある。As explained above, the present invention transmits a digitally inserted sub-signal when transmitting a sub-signal between end-station relay devices, and transmits a sub-signal inserted between the intermediate relay device section and between the intermediate relay device and the end-station relay device. By modulating the main digital optical signal with the sub signal in an analog manner and transmitting the sub signal, the intermediate intermediate device can transmit the sub signal, reducing power consumption, and further increasing the independence between the end station relay devices. This has the excellent effect of making it possible to transmit sub-signals such as 1, 2, and 3, and ensuring sufficient sub-signal transmission capacity.
第１図は本発明一実施例副信号伝送装置のブロック構成
図。
第２図は本発明の副信号伝送装置の端局中継装置のブロ
ック構成図。
第３図は本発明の副信号伝送装置の中間中継装置のブロ
ック構成図。
第４図は本発明の副信号伝送装置のディジタル的に副信
号がビット挿入された主ディジタル信号を示す図。
第５図は本発明の副信号伝送装置のアナログ的に副信号
により変調された主ディジタル信号を示す図。
Ｉｔ 、ｉｔ・・・端局中継装置、２５．２□・・・中
間中継装置、３・・・主ディジタル信号、４．５・・・
副信号、１０．．１０ｚ・・・副信号アナログ変調分離
部、１）．．１）□・・・副信号ディジタル挿入分離部
、１２・・・ピント挿入回路、１３．１５．２３・・・
副信号インタフェース回路、１４．２４・・・電気・光
変換回路、１６．２５・・・出力端子、１７．２１・・
・入力端子、１８．２２・・・光・電気変換回路、１９
・・・ビット分離回路、２０．．２０□・・・副信号ア
ナログ変調分離部、２６・・・副信号用ビット、２７・
・・主信号ビット、２日・・・アナログ変調された副信
号（光信号）、２９・・・主ディジタル信号（光信号）
。FIG. 1 is a block diagram of a sub-signal transmission device according to an embodiment of the present invention. FIG. 2 is a block diagram of the terminal relay device of the sub-signal transmission device of the present invention. FIG. 3 is a block diagram of the intermediate relay device of the sub-signal transmission device of the present invention. FIG. 4 is a diagram showing a main digital signal into which sub-signal bits are digitally inserted in the sub-signal transmission device of the present invention. FIG. 5 is a diagram showing a main digital signal modulated in an analog manner by a sub signal of the sub signal transmission device of the present invention. It, it...terminal relay device, 25.2□...intermediate relay device, 3...main digital signal, 4.5...
Sub-signal, 10. ．． 10z...Sub signal analog modulation separation unit, 1). ．． 1) □...Sub signal digital insertion/separation unit, 12...Focus insertion circuit, 13.15.23...
Sub-signal interface circuit, 14.24... Electrical/optical conversion circuit, 16.25... Output terminal, 17.21...
・Input terminal, 18.22... Optical/electrical conversion circuit, 19
...bit separation circuit, 20. ．． 20□...Sub signal analog modulation separation unit, 26...Sub signal bit, 27...
...Main signal bit, 2 days...Analog modulated sub signal (optical signal), 29...Main digital signal (optical signal)
.
Claims (1)
継装置と を備えた副信号伝送方式において、 上記端局中継装置および上記中間中継装置はそれぞれ、
主ディジタル光信号の振幅を副信号により変調して伝送
し、伝送された主ディジタル光信号から副信号を分離す
る副信号アナログ変調分離回路を含み、 上記端局中継装置は、主ディジタル信号に副信号をディ
ジタル的にビット挿入して伝送し、伝送されてきた主デ
ィジタル信号から副信号を分離する副信号ディジタル挿
入分離回路を含む ことを特徴とする副信号伝送方式。(1) In a sub-signal transmission system comprising a pair of opposing terminal station relay devices and an intermediate relay device connected between the pair of opposing terminal station relay devices, the terminal station relay device and the intermediate relay device are connected to each other. Each relay device is
The terminal relay device includes a sub-signal analog modulation separation circuit that modulates the amplitude of the main digital optical signal with a sub-signal and transmits the sub-signal, and separates the sub-signal from the transmitted main digital optical signal. A sub-signal transmission method comprising a sub-signal digital insertion/separation circuit that digitally inserts bits into a signal for transmission and separates the sub-signal from the transmitted main digital signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61260468A JPH06101705B2 (en) | 1986-10-30 | 1986-10-30 | Sub signal transmission method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61260468A JPH06101705B2 (en) | 1986-10-30 | 1986-10-30 | Sub signal transmission method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63114328A true JPS63114328A (en) | 1988-05-19 |
| JPH06101705B2 JPH06101705B2 (en) | 1994-12-12 |
Family
ID=17348368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61260468A Expired - Lifetime JPH06101705B2 (en) | 1986-10-30 | 1986-10-30 | Sub signal transmission method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06101705B2 (en) |
-
1986
- 1986-10-30 JP JP61260468A patent/JPH06101705B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06101705B2 (en) | 1994-12-12 |
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