JPS63301661A - Light transmitting type communication telephone - Google Patents
Light transmitting type communication telephoneInfo
- Publication number
- JPS63301661A JPS63301661A JP62138028A JP13802887A JPS63301661A JP S63301661 A JPS63301661 A JP S63301661A JP 62138028 A JP62138028 A JP 62138028A JP 13802887 A JP13802887 A JP 13802887A JP S63301661 A JPS63301661 A JP S63301661A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- signal
- station
- converter
- electrical
- 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
Links
- 238000004891 communication Methods 0.000 title claims abstract description 35
- 230000003287 optical effect Effects 0.000 claims abstract description 89
- 230000005540 biological transmission Effects 0.000 claims abstract description 43
- 230000005236 sound signal Effects 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000013307 optical fiber Substances 0.000 description 38
- 239000000284 extract Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 240000008168 Ficus benjamina Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Optical Communication System (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
この発明は複数個の通話器間で相豆に連絡が可能であり
かつ通話器間の信号伝送が光伝送路(光ファイバ)を介
して行なわれる光伝送式連絡電話の構成に関する。[Detailed Description of the Invention] [Industrial Field of Application] This invention enables communication between a plurality of telephone sets and transmits signals between the telephone sets via an optical transmission line (optical fiber). This article relates to the configuration of an optical transmission type contact telephone.
[従来の技術]
f53図は従来の光伝送式連絡電話の構成を示1図ぐあ
る。以F、第3図を参照して従来の光伝送式連絡電話の
構成J3よび動作について説明する。[Prior Art] Figure f53 shows the configuration of a conventional optical transmission contact telephone. Hereinafter, the configuration J3 and operation of a conventional optical transmission contact telephone will be explained with reference to FIG.
第3図にJ3いて従来の光伝送式連N電話は、回線の一
方端部に設けられる、通話可能な端局1と、端局1と連
絡しかつ端局1との通信を中継する中継局2と、回線の
他方端部に設けられ、中継局2からの通信を受けるとと
らに中継器2へ返送する折返し局3とを備える。ここで
中継局は1個しか示していないが、中継局は折返し局3
と中継局2との間に複数個設けられる。In Fig. 3, J3 is a conventional optical transmission type N-N telephone, which has a terminal station 1 installed at one end of the line that can make calls, and a relay that connects with the terminal station 1 and relays communication with the terminal station 1. The network includes a station 2, and a return station 3, which is provided at the other end of the line and receives communication from the relay station 2 and sends the communication back to the relay station 2. Although only one relay station is shown here, the relay station is the return station 3.
A plurality of relay stations are provided between the relay station 2 and the relay station 2.
端局1と中11r:02との間および中継局2と折返し
局3との間には光ファイバ○C1,0CI 1゜0G2
1.002が設けられる。すなわち各局間の通信は光フ
ァイバを通じて光信号の形態で行なわれる。Optical fiber ○C1,0CI 1゜0G2 is installed between terminal station 1 and middle 11r:02 and between relay station 2 and return station 3.
1.002 is provided. That is, communication between each station is carried out in the form of optical signals through optical fibers.
端局1は、アナログ音声信号を送受する送受話器11と
、送受話器11からのアナログ音声信号を光信号に変換
して光ファイバOC1上へ伝達する電気−光変換器12
と、光ファイバOC2を介して与えられるアナログ光信
号を電気信号に変換して送受話器11へ4)える光−電
気変換器13とを備える。The terminal station 1 includes a handset 11 that transmits and receives analog audio signals, and an electrical-to-optical converter 12 that converts the analog audio signal from the handset 11 into an optical signal and transmits it onto the optical fiber OC1.
and an optical-to-electrical converter 13 that converts an analog optical signal provided via the optical fiber OC2 into an electrical signal and sends it to the handset 11 (4).
中継局2は、アナログ音νh4n号を送受づる送受話器
21と、光ファイバOC1からの光信号を電気信号に変
換する光−電気変換器22と、光−電気変換器22と送
受話器21からのアナログ信号を受けて加nづる信号加
算V!A23と、信号加篩器23からのアナログ電気信
号を受けて光信号に変換して光フアイバ0C11上へ伝
達する電気−光変換器24と、光ファイバ0C21から
の光信号を電気15号に変換して送受話器21へ与える
とともに゛電気−光変換器26へ与える光−電気変換器
25とを備える。The relay station 2 includes a handset 21 that transmits and receives an analog sound νh4n, an optical-to-electrical converter 22 that converts an optical signal from the optical fiber OC1 into an electrical signal, and an optical-to-electrical converter 22 that converts an optical signal from the optical fiber OC1 into an electrical signal. Signal addition V that receives and adds analog signals! A23, an electrical-to-optical converter 24 that receives an analog electrical signal from the signal filter 23, converts it into an optical signal, and transmits it onto the optical fiber 0C11, and converts the optical signal from the optical fiber 0C21 into an electrical signal No. 15. and an optical-to-electrical converter 25 for supplying the signal to the handset 21 and to the electrical-to-optical converter 26.
折返し局3は、アナログ音声信号を送受づる送受話器3
1と、光ファイバOCI 1からのアナログ光信号を電
気信号に変換して送受話器31および信号用口器33へ
与える光−電気変換器32と、送受話器31および光−
電気変換器32がらのアナログ信号を加算する信号用n
器33と、信号用C)器33からのアナログ信号を受け
て光信号に変換して光フンフィバ0C21上へ伝達する
電気−光変換器34とを備える。The return station 3 has a handset 3 that transmits and receives analog voice signals.
1, an optical-to-electrical converter 32 that converts the analog optical signal from the optical fiber OCI 1 into an electrical signal and supplies it to the handset 31 and the signal mouthpiece 33;
Signal n for adding analog signals from the electrical converter 32
and an electro-optical converter 34 that receives an analog signal from the signal C) device 33, converts it into an optical signal, and transmits it onto the optical fiber 0C21.
光フンフィバOC1,OC11,0C21,QC2は端
局1を起点とし、折返し局3を折返し点とした1つのル
ープを構成する。次に動作について説明する。The optical fibers OC1, OC11, 0C21, and QC2 form one loop with the terminal station 1 as the starting point and the return station 3 as the return point. Next, the operation will be explained.
まず端局1の送受話器1を活性状態にしアナログa j
I (n 54を発生して電気−光変換器12へ与える
。電気−光変換器12は、送受話i5!11から与えら
れたアナログ音声信号を受けて光信号に変換する。この
とき電気−光変換1512は、アナログ信月娠幅を直接
光の強度に変調するアナログ直接変調方式を行なう。電
気−光変換器12から光フフイバOC1上へ伝達された
アナログ光信号は光−電気変換器22へ与えられ、そこ
でアナログ電気信号に変換される。光−電気変換器22
からのアナ0グ電気13号は信号用n器23へ与えられ
る。First, the handset 1 of the terminal station 1 is activated and the analog a j
I (n 54) and supplies it to the electro-optical converter 12. The electro-optical converter 12 receives the analog audio signal given from the transmitter/receiver i5!11 and converts it into an optical signal. The optical conversion 1512 performs an analog direct modulation method in which the analog signal width is directly modulated into the intensity of light. , where it is converted into an analog electrical signal.Optical-to-electrical converter 22
The analog 0g electricity No. 13 from is given to the signal generator 23.
15月加粋器23は光−電気変換器22がらのアブログ
電気信号と送受話器21からのアナログ音声信号を加n
する(重畳する)。信号加粋器23で加算された電気信
?5は電気−光変換器24C″直接光強度の変化に変調
され、光フアイバ0C11上へ伝達される。折返し局3
では、光ファイバ0C11を介して与えられた光信号を
光−電気変換器32を介して電気信号に変換し、送受話
器31で受信する。送受話器31からの送信アナログ音
声信号は信号用n器33で光−電気変換器32からのア
ナログ電気信号と加算(重畳)されて、電気−光変換器
34へ与えられる。電気−光変換器34は与えられたア
ナログ電気信号を光信号に変換して光フアイバ0C21
上へ伝達する。このとき電気−光変換器34もアナログ
直接変調を行なう。The adder 23 adds the analogue electrical signal from the optical-to-electrical converter 22 and the analog audio signal from the handset 21.
(superimpose). Electric signal added by signal adder 23? 5 is directly modulated by the electro-optical converter 24C'' into a change in light intensity and transmitted onto the optical fiber 0C11. Return station 3
Then, an optical signal applied via the optical fiber 0C11 is converted into an electrical signal via the optical-to-electrical converter 32, and the signal is received by the handset 31. The transmitted analog audio signal from the handset 31 is added (superimposed) with the analog electrical signal from the optical-to-electrical converter 32 in the signal converter 33 and is applied to the electrical-to-optical converter 34 . The electrical-optical converter 34 converts the applied analog electrical signal into an optical signal and connects it to the optical fiber 0C21.
Communicate upward. At this time, the electro-optical converter 34 also performs analog direct modulation.
光ファイバ0C21からのアナログ光信号は光−電気変
換器25で電気信号に変換され送受話器21へ与えられ
るとともに電気−光変換器26へ与えられる。電気−光
変換器26は与えられたアナログ電気信号を光信号に変
換し、光ファイバOC2を介して端局1の光−電気変換
器13へ与える。The analog optical signal from the optical fiber 0C21 is converted into an electrical signal by the optical-to-electrical converter 25, and is applied to the handset 21 and also to the electrical-to-optical converter 26. The electric-to-optical converter 26 converts the applied analog electric signal into an optical signal and supplies it to the optical-to-electrical converter 13 of the terminal station 1 via the optical fiber OC2.
光−電気変換21i13からのアナログ電気信号は送受
話器11へ与えられる。以上のようにして、端局1から
のa角信号は順次中継局2.折返し局3へ与えられ、折
返し局3を折返し点として各中継局2および折返し局3
からの送信合用信号が光ファイバ0C21,0G2を介
して中m局2、端局1へ送り返されることになる。The analog electrical signal from the optical-to-electrical converter 21i13 is provided to the handset 11. As described above, the a-angle signal from the terminal station 1 is sequentially transmitted to the relay station 2. It is given to the return station 3, and each relay station 2 and the return station 3 use the return station 3 as the return point.
The transmission signal from the central station 2 is sent back to the middle station 2 and the terminal station 1 via the optical fibers 0C21 and 0G2.
[発明が解決しようとする問題点1
以上のように従来の光伝送式の連絡1!話においては、
各局間の信号伝送は光ファイバを介して光信号の形態で
行なわれるものの、アナログ信号のままで通信が行なわ
れるため、通話器(送受話器)の接続台数を増やした場
合、その台数に比例してm音が増加し、多くの台数を接
続するとこのm音より十分な通信を行むうことができな
いという問題点があった。また、電気信号から光信号へ
の変換および光信号から電気信号へ′の変換が共にアナ
ログ直接変調方式を用いて行なわれているため、光フフ
ァイバの通信形態において複数ヂせネルの通信を多重化
して行なうことが困難であり、全局の−・斉通話しか行
なうことができないという問題点があった。[Problem 1 to be solved by the invention As described above, conventional optical transmission type communication 1! In the story,
Signal transmission between stations is carried out in the form of optical signals via optical fibers, but since communication is carried out as analog signals, when the number of connected handsets (handsets) increases, the number of handsets increases. There was a problem in that the number of m-tones increased, and when a large number of devices were connected, sufficient communication could not be achieved using these m-tones. In addition, since the conversion of electrical signals to optical signals and the conversion of optical signals to electrical signals are both performed using analog direct modulation, it is possible to multiplex communications of multiple channels in optical fiber communication formats. There was a problem in that it was difficult to do this, and only simultaneous calls could be made by all stations.
それゆえ、この発明の目的は、上述の従来の光伝送式連
絡電話の有する問題点を除去し、送受話器の台数を増や
すことができるとともに、送受話器を複数チャネルのグ
ループに分割し、光ファイバを介して複数チ1?ネルを
多重化して通信を行なうことのできる光伝送式31絡電
話を提供することである。Therefore, an object of the present invention is to eliminate the above-mentioned problems of the conventional optical transmission contact telephone, increase the number of handsets, divide the handsets into groups of multiple channels, and connect optical fibers. Multiple channels through 1? An object of the present invention is to provide an optical transmission type 31-line telephone that can perform communication by multiplexing channels.
この発明に係る光伝送式31絡電話は、他局との通信を
光伝送路を介してディジタル信号の形態で行なうように
したものである。The optical transmission 31-line telephone according to the present invention is configured to communicate with other stations in the form of digital signals via an optical transmission line.
[作用]
各局の通信が光伝送を介してディジタル信号の形態で行
なわれるので、7ノ゛ログ方式の通信とは異なり、送受
話器の接続台数を増やしてもm音が増加することがなく
、また各局の通信を多重化して行なうことも容易となる
。[Function] Since communication between each station is carried out in the form of digital signals via optical transmission, unlike 7-nolog communication, the m-tone does not increase even if the number of handsets and receivers connected is increased. It also becomes easy to multiplex communication between each station.
し発明の実施例1
以下、この発明の実施例について図面を参照して説明す
る。Embodiment 1 of the Invention Hereinafter, embodiments of the invention will be described with reference to the drawings.
第1図はこの発明の一実施例である光伝送式31絡電話
の構成を示す因である。以下、第1図を参照してこの発
明の一実施例である光伝送式連$8 ff1話の構成お
よび動作について説明する。FIG. 1 shows the structure of an optical transmission type 31-line telephone which is an embodiment of the present invention. Hereinafter, the configuration and operation of an optical transmission type $8 ff1 episode, which is an embodiment of the present invention, will be explained with reference to FIG.
第1図において、この発明による光伝送式連絡電話は、
従来と同様に端局1、中継局2、および折返し局3を右
づる。各局間の通信は光ファイバOC1,○G11.0
C21,OC2を介して行なわれる。端局1は、アナロ
グ信号を送受信する送受F、!、1ff111と、送受
話器11からのアナログ信号をたとえばPCM (パル
ス コード モジュレーション)信号などのディジタル
信号に変換するA/D変換器15と、A/D′a換器1
5からの信号を受参りでたとえば時分vJに多m化する
マルチプレクサ16と、マルチプレクサ16からのディ
ジタル信号を受けて光信号に変換して光ファイバOC1
上へ伝達する電気−光変換器12と、光ファイバOC2
からのディジタル光信号を受けて電気信号に変換する光
−電気変換器13と、光−電気変換器13からのディジ
タル信号を受けて自己の属するチャネルの信号を選択し
てD/A*換ii8へ与えるマルチプレクリ17と、マ
ルチプレクサ17からのディジタル信号を受け【アナロ
グ信号に変換して送受話21111へ与えるD/A変換
器18とを備える二
中継局2は、光ファイバOC1を介して与えられるディ
ジタル光信号を電気信号に変換する光−電気変換器22
と、光−電気変I!A器22からのディジタル信号を受
けて中継局2が属するチャネルのディジタル信号のみを
選択してD/A変換Pi202へ与えるとともにその他
のチャネルのディジクル信号をマルチプレクサ204へ
与えるマルチプレクサ201と、マルチプレクサ201
で選択された自局のチャネルに属するディジタルイエ号
を受けてアナログ信号に変換し信号加算器23へ伝達す
るD/A変換器202と、送受話器21およびD/A変
換器202からのアナログ信号を受けて川口して出力す
る信号加算器23と、信号側ngA23からのアナログ
信号を受けてディジタル信号に変換するA/D変換器2
03と、A/D変換器203からのディジタル信号とマ
ルチプレクサ201からの信号を受けて多重化して伝達
するマルチプレクサ204と、マルチプレクサ204か
らのディジタル信号を受けて光信号に変換する電気−光
変換2124と、光ファイバ0C21からのディジタル
光信号を受けて電気4a号に変換する光−電気変換器2
5と、光−電気変換器25からのディジタル信号を受け
、自局(中継局2)が属するチャネルのディジタル信号
を選択してD/A変換器206へ与えるとともに他のチ
ャネルのディジクル信りをマルチプレクサ207へ与え
るマルチプレクサ205と、マルチプレクサ205から
のディジタル13号を受けてアナログ信号に変換して送
受話器21へ伝達するD/A変換器206と、マルチプ
レクサ205からのディジタル信号を受けて多重化され
たディジタル信号を伝達するマルチプレクサ207と、
マルチプレクサ207からのディジタル信号を受けて光
信号に変換して光フアイバ002上へ伝達する電気−光
変換器26とを備える。In FIG. 1, the optical transmission telephone according to the present invention is
As in the conventional case, the terminal station 1, relay station 2, and return station 3 are moved to the right. Communication between each station is via optical fiber OC1, ○G11.0
This is done via C21 and OC2. Terminal station 1 is a transmitter/receiver F,! that transmits and receives analog signals. , 1ff 111, an A/D converter 15 that converts an analog signal from the handset 11 into a digital signal such as a PCM (pulse code modulation) signal, and an A/D'a converter 1.
A multiplexer 16 receives the signal from the multiplexer 16 and multiplies it into, for example, hours and minutes vJ, and receives the digital signal from the multiplexer 16 and converts it into an optical signal and connects it to the optical fiber OC1.
an electrical-to-optical converter 12 transmitting upwards and an optical fiber OC2
an optical-to-electrical converter 13 that receives a digital optical signal from the optical-to-electrical converter 13 and converts it into an electrical signal; The two relay stations 2 are equipped with a multiplexer 17 that receives the digital signal from the multiplexer 17 and converts it into an analog signal and provides it to the transmitter/receiver 21111 via the optical fiber OC1. Optical-to-electrical converter 22 that converts digital optical signals into electrical signals
And light-electric transformation I! A multiplexer 201 receives the digital signal from the A unit 22, selects only the digital signal of the channel to which the relay station 2 belongs, and supplies it to the D/A converter Pi 202, and supplies digital signals of other channels to the multiplexer 204;
A D/A converter 202 receives a digital signal belonging to the channel of the own station selected in , converts it into an analog signal, and transmits it to the signal adder 23, and an analog signal from the handset 21 and the D/A converter 202. a signal adder 23 that receives and outputs an analog signal from the signal side ngA 23, and an A/D converter 2 that receives an analog signal from the signal side ngA 23 and converts it into a digital signal.
03, a multiplexer 204 that receives, multiplexes and transmits the digital signal from the A/D converter 203 and the signal from the multiplexer 201, and an electro-optical converter 2124 that receives the digital signal from the multiplexer 204 and converts it into an optical signal. and an optical-to-electrical converter 2 that receives a digital optical signal from the optical fiber 0C21 and converts it into an electrical signal No. 4a.
5, receives the digital signal from the optical-to-electrical converter 25, selects the digital signal of the channel to which its own station (relay station 2) belongs, and supplies it to the D/A converter 206, while also transmitting digital signals of other channels. A multiplexer 205 supplies the digital signal to the multiplexer 207, a D/A converter 206 receives the digital signal No. 13 from the multiplexer 205, converts it into an analog signal, and transmits it to the handset 21, and the digital signal from the multiplexer 205 is received and multiplexed. a multiplexer 207 that transmits the digital signal;
It includes an electrical-to-optical converter 26 that receives the digital signal from the multiplexer 207, converts it into an optical signal, and transmits it onto the optical fiber 002.
JJi返し局3は、光ファイバOC11からのディジタ
ル光信号を受けて電気信号に変換する光−電気変換S3
2と、光−電気変yA器32からのディジクル信号を受
けて自局(折返し局3)の属するチャネルの信号のみを
D/A変換器302へ与え他の信号をマルチプレクサ3
04へ与えるマルチプレクサ301と、D/A変換器3
02からのアナログ信号を受けるとともに送受話器31
からのアナログ信号を受けて加淳して出力する信号加算
器33と、信号側0器33からのアナログ信号を受けて
ディジタル信号に変換するA/D変換器303と、マル
チプレクサ301とA/D変換器303からのディジタ
ル信号を受けて多重化して出力するマルチプレクサ30
4と、マルチプレクサ304からのディジタル信号を受
けて光信号に変換して光フアイバ0C21上へ伝達する
電気−光変換器34とを備える。The JJi return station 3 receives a digital optical signal from the optical fiber OC11 and converts it into an electrical signal.
2 and a digital signal from the optical-electric converter 32, which sends only the signal of the channel to which the own station (return station 3) belongs to the D/A converter 302, and sends other signals to the multiplexer 3.
04 and the D/A converter 3.
02 and receives the analog signal from the handset 31.
A signal adder 33 receives and processes analog signals from the signal side 0 unit 33 and outputs the analog signals, an A/D converter 303 receives analog signals from the signal side zero unit 33 and converts them into digital signals, a multiplexer 301 and an A/D A multiplexer 30 receives and multiplexes digital signals from the converter 303 and outputs the multiplexed signals.
4, and an electro-optical converter 34 that receives the digital signal from the multiplexer 304, converts it into an optical signal, and transmits it onto the optical fiber 0C21.
上述の構成において、各局の送イε部のマルチプレクサ
は与えられたディジタル(3号をたとえば時分割多重に
より多重化して伝送し、各局の受信部に設けられたマル
チプレクサは多重化されたディジタル4m 8から自局
の属するチャネルのディジタル信号のみを選択して取出
す。次に動作について説明する。In the above configuration, the multiplexer in the transmission ε section of each station multiplexes and transmits the given digital signal (for example, by time division multiplexing), and the multiplexer provided in the receiving section of each station transmits the multiplexed digital 4m8 signal. Selects and extracts only the digital signal of the channel to which the own station belongs.Next, the operation will be explained.
まず、端局1の送話側を起1j、tとして通信が開始さ
れる。すなわち、送受話器11からのアナログ音jtj
信号はA/D′a換器15でディジタル信号に変換され
た後マルチプレクサ16へ与えられる。First, communication is started with the transmitting side of the terminal station 1 set to 1j, t. That is, the analog sound jtj from the handset 11
The signal is converted into a digital signal by an A/D'a converter 15 and then applied to a multiplexer 16.
マルチプレクサ16は、端局1が選択したチャネルに属
するように送受話21i11からの信号を多重化して電
気−光変換器12へ与える。光ファイバOC1を介して
与えられるディジタル信号は中継局2の光−電気変換器
22で電気(Z号に変換される。マルチプレクサ201
は光−電気変換器22からの多重化されたディジタル信
号を受け、自局(中継局2)が属するチャネルのディジ
タル信号を選択して取出してD/A変換15i202へ
与える。The multiplexer 16 multiplexes the signals from the transmitter/receiver 21i11 so that they belong to the channel selected by the terminal station 1, and provides the multiplexed signals to the electro-optical converter 12. The digital signal provided via the optical fiber OC1 is converted into electricity (Z signal) by the optical-to-electrical converter 22 of the relay station 2.
receives the multiplexed digital signal from the optical-to-electrical converter 22, selects and extracts the digital signal of the channel to which its own station (relay station 2) belongs, and supplies it to the D/A converter 15i202.
信号用n器23はD/A変換21i202からのアナロ
グ信号と送受話′!A21からのアナログ信号とを受け
て加淳(m畳)してD/A変換器203へ与える。マル
チプレクサ204はA/D%11203からのディジタ
ル光信号とマルチプレクサ201からの自局以外のディ
ジクル信号とを受けて多重化し【出力Jる。このときマ
ルチプレクサ204は自局のiするチャネルの音声信号
を同一のチャネルに屈するように多重化して出力する。The signal unit 23 transmits and receives analog signals from the D/A converter 21i202! It receives the analog signal from A21, converts it (m tatami), and supplies it to the D/A converter 203. The multiplexer 204 receives and multiplexes the digital optical signal from the A/D 11203 and the digital signal from the multiplexer 201 other than its own station, and outputs it. At this time, the multiplexer 204 multiplexes the audio signals of the channel i of its own station so as to combine them into the same channel, and outputs the multiplexed signals.
電気−光変換器24はマルチプレクサ204からのディ
ジタル信号を光信号に変換して光フアイバ0C11上へ
伝達する。折返し局3の光−電気変換器32は与えられ
た光信号をディジタル信号に変換し、マルチプレクサ3
01へ与える。マルチプレクリ301は自局(折返し局
3)が属するチャネルのディジタル信号を選択して取出
しD/A変換器302へ与える。D/A変換器302か
らのアナログ信号は送受話器31へ与えられるとともに
信号用tli!!!33へ与えられる。信号用n器33
はD/A変換器302からのアナログ45号および送受
話器31からのアナログ信号を受けて加口してA/D変
換器303へ与える。A/D変換器303でディジタル
信号に変換された信号はマルチプレクサ°304でマル
チプレクサ301からのディジタル信号と多重化されて
電気−光変換器34へ与えられる。電気−光変換器34
からの信号は光ファイバ0C21を介して中継局2の光
−電気変Wji器25へ与えられる。光−電気変換器2
5からの多重化されたディジタル信号はマルチプレクサ
205で自局(中継局2)のaするチャネルのディジタ
ル信号のみが選択して取出されD/A変換器206へ与
えられる。マルチプレクサ205はまた中継局2が属さ
ないチトネルの18号はそのままマルチプレクサ207
へ伝達する。D/A変換器206でアナログ42月に変
換された15号は送受話器21へ与えられる。マルチプ
レクサ207は与えられた多重化ディジタル信号をその
まま電気−先安1’M21!26へ与える。光ファイバ
OC2を介して電気−光変換器26から与えられたディ
ジタル信号は端局1の光−電気変PA器13で電気信号
に変換され、マルチプレクサ17へ与えられる。マルチ
プレクサ17は与えられたディジタル信号から自局(端
局1)の属するチャネルのディジタル信号を選択して取
出しD/A変換器18へ与える。Electrical-to-optical converter 24 converts the digital signal from multiplexer 204 into an optical signal and transmits it onto optical fiber 0C11. The optical-to-electrical converter 32 of the return station 3 converts the applied optical signal into a digital signal and sends it to the multiplexer 3.
Give to 01. The multiplexer 301 selects the digital signal of the channel to which its own station (return station 3) belongs, extracts it, and supplies it to the D/A converter 302. The analog signal from the D/A converter 302 is given to the handset 31 and also to the signal tli! ! ! Given to 33. Signal unit 33
receives the analog signal 45 from the D/A converter 302 and the analog signal from the handset 31, modifies it, and supplies it to the A/D converter 303. The signal converted into a digital signal by the A/D converter 303 is multiplexed with the digital signal from the multiplexer 301 by a multiplexer 304, and is applied to the electro-optical converter 34. Electrical-optical converter 34
The signal from the relay station 2 is applied to the optical-to-electrical converter Wji 25 of the relay station 2 via the optical fiber 0C21. Light-electric converter 2
A multiplexer 205 selects and extracts only the digital signal of channel a of its own station (relay station 2), and supplies it to a D/A converter 206. Multiplexer 205 also connects Chitnel No. 18, to which relay station 2 does not belong, to multiplexer 207.
Communicate to. No. 15 converted into an analog signal by the D/A converter 206 is provided to the handset 21. The multiplexer 207 supplies the applied multiplexed digital signal as it is to Denki-Sen'an 1'M21!26. A digital signal applied from the electric-to-optical converter 26 via the optical fiber OC2 is converted into an electric signal by the optical-to-electrical transformer PA unit 13 of the terminal station 1, and is applied to the multiplexer 17. The multiplexer 17 selects the digital signal of the channel to which its own station (terminal station 1) belongs from the applied digital signals, takes it out, and supplies it to the D/A converter 18.
D/A変換ziaで変換されたディジタル信号は送受話
器11へ与えられる。The digital signal converted by the D/A converter zia is given to the handset 11.
以上のように端局1を送話の起点として行なわれる通信
は、中継局2から順次折返し局へ伝送され、それぞれの
局からの送品4?ijlが重ね合わせられる。このとき
同じチャネルに属する局からの信号は同一チャネルに加
え合わせられ、他のチャネルとは区別される。この動作
はマルチプレクサにより行なわれる。全局の信号を乗せ
た通信内容は折返し局3で折返され再び中継局2、端局
1へと伝送される。各局は折返された信号のうし次局の
属するチャネルのfR@のみを取出し送受話器の受話器
から音声として出力する。これにより同一チ17ネルに
属する8冊の一斉通話が可能となる。As described above, the communication performed with the terminal station 1 as the starting point for transmission is sequentially transmitted from the relay station 2 to the return station, and the sent item 4? ijl are superimposed. At this time, signals from stations belonging to the same channel are added to the same channel and distinguished from other channels. This operation is performed by a multiplexer. The communication content carrying the signals of all the stations is looped back at the loopback station 3 and transmitted again to the relay station 2 and the terminal station 1. Each station extracts only the fR@ of the channel to which the next station belongs from the returned signal and outputs it as audio from the receiver of the handset. This makes it possible to simultaneously call 8 books belonging to the same 17 channels.
またマルチプレクサを用いて複数チャネルの多重化で相
互行なうことができるため、各局に別々のチャネルを割
当て、各局にまたチャネル切換手段を設けることにより
、通常の電話と同様のように使用することができ、また
全体をいくつかのグループに分け、グループ内で一斉通
話を行なうことらできる。In addition, multiple channels can be multiplexed using a multiplexer, so by assigning a separate channel to each station and providing each station with channel switching means, it can be used in the same way as a regular telephone. You can also divide the entire system into several groups and make simultaneous calls within the group.
このように通信にディジタル信号を用いて自局の送受話
に無圓係な信号はディジタルに号のままで中継伝送され
るため中継による雑音の増加や伝送路途中の光損失等に
起因する雑tsb極力少なくすることができ、接続送受
話器台数を従来に比べて多くすることが可能となる。In this way, when digital signals are used for communication, signals that are unrelated to the transmission and reception of the own station are relayed as digital signals, which increases noise due to relaying and optical loss in the middle of the transmission path. tsb can be reduced as much as possible, and the number of connected handsets can be increased compared to the conventional method.
第2図はこの発明による光伝送式連絡電話を現場に適用
した際の構成の一例を示す図である。第2図の構成にお
いては送電線工事現場における利用を想定している。以
下、第2図を参照してこの発明の他の実施例による光伝
送式連絡電話の構成について説明する。まず構成として
は通信の起点および終点となる端局1と、端局1からの
通信を中継づる中継局2a、2bと、中継局2bからの
通4iiを折返し再び中継局2bへ転送する折返し局3
とを備える。端局1は、たとえばヘッドホンからなる送
受話器101と、送受話器本体102と、本体102か
らの電気信号を光信号に変換する電気−光変換器12と
、本体102へ電気信号を与えるための光−電気変換器
13と、電気−光変換1M12からの光信号および光フ
ァイバOC5からのディジタル信号を受は送信信号と受
信信号の区別を行なう光分疲器103と、本体1に動作
電源を供給するだめのたとえばAClooVを直流に変
換するAC/DC変換v!A104とを備える。本体1
02には、同一チャネルまたは所望のチャネルに属する
局を呼出すための呼出スイッヂ105と、他局からの呼
出信号を発生する呼出スピーカ106とを備える。また
、本体102はその内部にA/DvIyA器、マルチプ
レクサ、D/A変換器を備えている。このとき本体2に
はチャネル切換スイッチを設けておいてもよい。FIG. 2 is a diagram showing an example of the configuration of the optical transmission contact telephone according to the present invention when applied to a field. The configuration shown in Figure 2 is intended for use at power transmission line construction sites. Hereinafter, the configuration of an optical transmission contact telephone according to another embodiment of the present invention will be explained with reference to FIG. First, the configuration consists of a terminal station 1 that serves as the starting and ending point of communication, relay stations 2a and 2b that relay communications from terminal station 1, and a return station that loops back communication 4ii from relay station 2b and transfers it to relay station 2b. 3
Equipped with. The terminal station 1 includes a handset 101 consisting of, for example, headphones, a handset main body 102, an electro-optical converter 12 that converts an electrical signal from the main body 102 into an optical signal, and an optical transceiver 12 that converts an electrical signal from the main body 102 into an optical signal. - The electrical converter 13 receives the optical signal from the electrical-to-optical converter 1M12 and the digital signal from the optical fiber OC5, and supplies operating power to the optical divider 103, which distinguishes between the transmitted signal and the received signal, and the main body 1. For example, AC/DC conversion v! that converts AClooV to DC! A104. Main body 1
02 is equipped with a paging switch 105 for calling a station belonging to the same channel or a desired channel, and a paging speaker 106 for generating a paging signal from another station. The main body 102 also includes an A/DvIyA device, a multiplexer, and a D/A converter inside. At this time, the main body 2 may be provided with a channel changeover switch.
中継局2aは、光ファイバOC5からの光信号を受けて
送信信号を光−電気変換器22へ与えかつ電気−光変換
器26からの光信号を受けて出力する光分波?!A21
2と、アナログ信号を送受信するヘッドホン201と、
送受話器の本体210と、送受話器本体210へ与えら
れたアナログ音声信号を拡大して発生する拡声器211
とを備える。The relay station 2a receives an optical signal from the optical fiber OC5 and provides a transmission signal to the optical-to-electrical converter 22, and receives an optical signal from the electric-to-optical converter 26 and outputs the optical signal. ! A21
2, headphones 201 that transmit and receive analog signals,
A main body 210 of the handset and a loudspeaker 211 that amplifies and generates an analog audio signal given to the main body 210 of the handset and receiver.
Equipped with.
本体210と拡声器211の間はたとえば通常の電気配
線により接続される。本体210からの電気信号は光−
電気変換器24により光信号に変換され光分波器213
へ与えられる。光分波器213は電気−光変換器24か
らの光信号を送信するとともに受信(光ファイバOC6
からの)光信号を分波して光−電気変換VS25へ与え
る。また本体210には呼出したいチャネルに属する局
を呼出すための呼出スイッチ215および他局からの呼
出信号を発生する呼出スピーカ21Gが設けられる。The main body 210 and the loudspeaker 211 are connected, for example, by ordinary electrical wiring. The electrical signal from the main body 210 is optical.
It is converted into an optical signal by the electrical converter 24 and sent to the optical demultiplexer 213.
given to. The optical demultiplexer 213 transmits and receives the optical signal from the electrical-to-optical converter 24 (optical fiber OC6).
) is demultiplexed and applied to the optical-to-electrical converter VS25. The main body 210 is also provided with a calling switch 215 for calling a station belonging to a channel desired to be called, and a calling speaker 21G for generating a calling signal from another station.
中継局2bは、送イδ信号と受信信号を分波する光分波
器222と、光分波器222からの光信号を電気4m月
に変換する光−電気変換器223と、送受話器本体22
7と、本体227とアナログ音声信号を送受するヘッド
ボン221と、本体227からの電気信号を光信号に変
換する電気−光変換器224と、光分波器222からの
光信号を電気信号に変換して本体227へ与える光−電
気変換器226と、送信信号および受信信号を分波。The relay station 2b includes an optical demultiplexer 222 that demultiplexes the transmitted δ signal and the received signal, an optical-to-electrical converter 223 that converts the optical signal from the optical demultiplexer 222 into electrical 4m, and a handset body. 22
7, a headbond 221 that transmits and receives analog audio signals to and from the main body 227, an electro-optical converter 224 that converts electrical signals from the main body 227 into optical signals, and converts optical signals from the optical demultiplexer 222 into electrical signals. The optical-to-electrical converter 226 separates the transmitted signal and the received signal.
合成する光分波器225とが設けられる。本体227の
外部には本体227と通信を行なう延長電話228が設
けられ、延長電話228には′if!1撃などから防止
づるための保安器229を介してヘッドホン230が設
けられる。延長電話228とヘッドホン230との距離
はたとえば200メートルの範囲内で変更可能なように
されている。また送受話器本体227には、所望の局を
呼出すための呼出スイッチ231と、他局からの呼出信
号を発生する呼出スピーカ232が設けられる。An optical demultiplexer 225 for combining is provided. An extension telephone 228 is provided outside the main body 227 to communicate with the main body 227, and the extension telephone 228 has 'if!'. Headphones 230 are provided via a protector 229 to protect against a single blow. The distance between extension telephone 228 and headphones 230 can be changed within a range of, for example, 200 meters. The handset main body 227 is also provided with a call switch 231 for calling a desired station and a call speaker 232 for generating a call signal from another station.
折返し局3は、送受信信号を分波、構成する光分波器3
02と、光分波1302で分波された信号を電気信号に
変換する光−電気変換器32と、本体303からの電気
信号を光信号に変換して光分波器302へ与える電気−
光変換器34とが設けられる。本体303にはアナログ
音声信号を送受話するためのハンドセット301と、所
望の局を呼出すための呼出スイッチ310と他局からの
呼出4B号を発生する呼出スピーカ311が設けられる
。The return station 3 includes an optical demultiplexer 3 that demultiplexes and configures transmitted and received signals.
02, an optical-to-electrical converter 32 that converts the signal demultiplexed by the optical demultiplexer 1302 into an electrical signal, and an electric signal that converts the electrical signal from the main body 303 into an optical signal and supplies it to the optical demultiplexer 302.
A light converter 34 is provided. The main body 303 is provided with a handset 301 for transmitting and receiving analog voice signals, a call switch 310 for calling a desired station, and a call speaker 311 for generating a call number 4B from another station.
ここで各本体102,210.227および303には
第2図に示されるA/D変換器、マルチプレクサ、D/
A変換器が内蔵されており、またバッテリを内蔵し、そ
の内蔵バッテリで動作可能なようにもされている。Here, each main body 102, 210, 227 and 303 includes an A/D converter, a multiplexer, a D/D converter, and a D/D converter shown in FIG.
It has a built-in A converter and a built-in battery so that it can be operated using the built-in battery.
また各本体には各チャネルを切換えるための切換スイッ
チが設けられていてらよい。この場合通常の電話のよう
に所望のチャネルに屈する局のみを呼出すことが可能と
なる。また同一チャネル内に属する局間ぐの一斉通話も
可能となる。Further, each main body may be provided with a changeover switch for changing over each channel. In this case, it is possible to call only those stations that yield to the desired channel, as in a normal telephone. It also becomes possible to make simultaneous calls between stations belonging to the same channel.
ここで光フフイバOC5,OC6,OC7は1本で示さ
れているが、これは充分波器により、1本の線に合成さ
れているためである。Here, only one optical fiber OC5, OC6, and OC7 is shown, but this is because they are combined into one line by a sufficient waver.
動作としては第1図を参照して説明しだらのと同一であ
るが、たとえば中継局2aに拡声器211が設けられて
いると、中継局2aが設けられた現場では、拡声器21
1を介して一斉放送を行なうことができ、中継局2aに
属する人間に対し同時に通信内容を知らせることが可能
となる。The operation is the same as that described with reference to FIG.
Broadcasting can be carried out via the relay station 1, and it is possible to notify the people belonging to the relay station 2a of the communication contents at the same time.
また中継局2bのように送受話器本体227に延長電話
228を設番ノ、延長電話228から移動可能なように
保安器229を介してヘッドホン230を設番ノている
と、現場を横2するために歩き回る人も通話可能となり
、現場の情報を正確に早く伝達することが可能となる。In addition, as in relay station 2b, if an extension telephone 228 is installed on the handset body 227 and headphones 230 are installed via a protector 229 so that it can be moved from the extension telephone 228, the site can be moved horizontally. Even people who are walking around can make calls, making it possible to accurately and quickly transmit on-site information.
このように送′ai線現場に本発明を適用した場合、デ
ィジタル43号のため雑aが増加することがなく品質の
良い通信を行なうことが可能となる。また送受話器のタ
イプとしてはハンドセットやヘッドホンなど使用しヤ)
すい形態のものを選択することができる。When the present invention is applied to the transmission line AI line site in this way, it is possible to perform high-quality communication without increasing the miscellaneous a due to the use of digital No. 43. Also, as for the type of handset, you can use a handset, headphones, etc.)
You can choose the shape of the fish.
[発明の効果]
以上のようにこの発明によれば、各局間の通信を光伝送
路を介してディジタル信号の形態で行なうようにしたの
で、送受話器の接続台数を増加しでも発生する雑音が少
なく1品質の通信を行なうことができ、またディジタル
信号で通信を行なうため各局をチャネルごとに分割し、
各チャネルの通信を多π化して行なうことも可能となり
、その用途範囲がアナログ変調方式に比べて一層広くな
るという効果がある。すなわち、本願発明を、送電Fi
l−道路、鉄道など光ファイバの布設しているルートに
沿って送受話器を配置し、数回所間で連絡を取る場合な
どの連絡電話に利用づると従来よりさらに効果的に1品
質の通信を行なうことが可能となる。[Effects of the Invention] As described above, according to the present invention, communication between stations is carried out in the form of digital signals via optical transmission lines, so even if the number of connected handsets and receivers is increased, the noise generated can be reduced. It is possible to perform communication with at least one quality, and in order to communicate with digital signals, each station is divided into channels,
It is also possible to perform communication on each channel with a multiplier, which has the effect of widening the range of applications compared to the analog modulation method. That is, the present invention can be applied to power transmission Fi
l-If handsets are placed along routes where optical fibers are laid, such as roads and railways, and used for contact calls when making several calls between locations, it will be possible to achieve 1-quality communication even more effectively than before. It becomes possible to do this.
第1図はこの発明の一実施例である光伝送式連M’tF
J話の構成の一例を示す図である。112図はこの発明
による光伝送式連絡電話を現場に適用した際の構成の一
例を示す図である。第3図は従来の光伝送式連絡電話の
構成を示す図である。
図において、1は端局、2は中継局、3は折返し局、1
1.21.31は送受話器、15,203.303はA
/D変換器、18,202,206.302はD/A変
換器、16,17,201゜204.205,207,
301.304はマルチプレクサ、12.24.26.
34は電気−光変換器、13.22.25.32は光−
電気変換器である。、211は拡声器、228は延長f
fi話である。
なお、図中、同一符号は同一または相当部分を示す。Figure 1 shows an optical transmission type M'tF which is an embodiment of the present invention.
It is a diagram showing an example of the structure of episode J. FIG. 112 is a diagram showing an example of the configuration of the optical transmission contact telephone according to the present invention when applied to a field. FIG. 3 is a diagram showing the configuration of a conventional optical transmission contact telephone. In the figure, 1 is a terminal station, 2 is a relay station, 3 is a return station, 1
1.21.31 is the handset, 15,203.303 is A
/D converter, 18,202,206.302 is D/A converter, 16,17,201゜204.205,207,
301.304 is a multiplexer, 12.24.26.
34 is an electro-optical converter, 13.22.25.32 is an optical converter.
It is an electrical converter. , 211 is a loudspeaker, 228 is an extension f
This is a fi story. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (5)
話器間が光伝送路を介して接続される光伝送式連絡電話
であって、 前記複数の通話器の各々は、 送受話器と、 該送受話器からのアナログ信号をディジタル信号に変換
するA/D変換手段と、 前記A/D変換手段からのディジタル信号を受けてディ
ジタル光信号に変換して光伝送路に伝達する電気−光変
換手段と、 光伝送路を介して与えられるディジタル光信号を受けて
ディジタル電気信号に変換する光−電気変換手段と、 前記光−電気変換手段からのディジタル信号を受けてア
ナログ信号に変換して該送受話器へ与えるD/A変換手
段とを備える、光伝送式連絡電話。(1) An optical transmission contact telephone in which a plurality of handsets can communicate with each other and each handset is connected via an optical transmission line, and each of the plurality of handsets has a handset. an A/D converter that converts an analog signal from the handset into a digital signal; and an electric converter that receives the digital signal from the A/D converter, converts it into a digital optical signal, and transmits it to the optical transmission line. an optical conversion means; an optical-to-electrical conversion means for receiving a digital optical signal applied via an optical transmission line and converting it into a digital electrical signal; and an optical-to-electrical converting means for receiving a digital signal from the optical-to-electrical converting means and converting it into an analog signal. and a D/A conversion means for transmitting data to the handset.
向および受信方向が共に単一方向となるように接続され
、かつ前記複数の通話器は複数個のチャネルのいずれか
に属するように分割され、前記複数の通話器の各々は、
前記複数個のチャネルの音声信号を多重化する多重化手
段を備える、特許請求の範囲第1項記載の光伝送式連絡
電話。(2) Each of the plurality of intercoms is connected such that the transmission direction and the reception direction of the optical transmission line are both unidirectional, and the plurality of intercoms belong to one of the plurality of channels. and each of the plurality of telephones is divided into:
2. The optical transmission contact telephone according to claim 1, further comprising multiplexing means for multiplexing the audio signals of the plurality of channels.
受信部と送信部とに設けられ、前記受信部の多重化手段
は該通話器が属するチャネルの信号を選択して該通話器
へ与え、それ以外のチャネルの信号を該通話器の送信部
に設けられた多重化手段へ与える、特許請求の範囲第2
項記載の光伝送式連絡電話。(3) The multiplexing means is provided in a receiving section and a transmitting section of each of the plurality of handsets, and the multiplexing means of the receiving section selects the signal of the channel to which the handset belongs and makes the call. claim 2, wherein signals of other channels are supplied to a multiplexing means provided in a transmitting section of the communication device.
Optical transmission contact telephone as described in section.
、該通話器へ与えられた音声信号を拡大する外部拡声器
を備える、特許請求の範囲1項ないし第3項のいずれか
に記載の光伝送式連絡電話。(4) Each of the telephone sets is provided with an external loudspeaker that is provided outside the telephone set and amplifies the audio signal given to the telephone set, any one of claims 1 to 3. Optical transmission contact telephone listed in .
話器からの距離が可変にされた子局となる通話器を備え
る、特許請求の範囲第1項ないし第4項のいずれかに記
載の光伝送式連絡電話。(5) Each of the telephone sets is provided with a telephone set which is a master station and which is a slave station whose distance from the telephone set is variable. Optical transmission contact telephone listed in any of the above.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62138028A JPS63301661A (en) | 1987-06-01 | 1987-06-01 | Light transmitting type communication telephone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62138028A JPS63301661A (en) | 1987-06-01 | 1987-06-01 | Light transmitting type communication telephone |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63301661A true JPS63301661A (en) | 1988-12-08 |
Family
ID=15212357
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62138028A Pending JPS63301661A (en) | 1987-06-01 | 1987-06-01 | Light transmitting type communication telephone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63301661A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010183179A (en) * | 2009-02-03 | 2010-08-19 | East Japan Railway Co | Optical calling device and optical communication system using same |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61203750A (en) * | 1985-02-28 | 1986-09-09 | アルカテル・セル・アクチエンゲゼルシャフト | Potical communication system in subscriber's loop |
JPS61218259A (en) * | 1985-03-23 | 1986-09-27 | Sumitomo Electric Ind Ltd | Optical transmission type tie telephone system |
JPS61285855A (en) * | 1985-06-12 | 1986-12-16 | ノ−ザン テレコム リミテツド | Transmitter/receiver using optical fiber communicator |
-
1987
- 1987-06-01 JP JP62138028A patent/JPS63301661A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61203750A (en) * | 1985-02-28 | 1986-09-09 | アルカテル・セル・アクチエンゲゼルシャフト | Potical communication system in subscriber's loop |
JPS61218259A (en) * | 1985-03-23 | 1986-09-27 | Sumitomo Electric Ind Ltd | Optical transmission type tie telephone system |
JPS61285855A (en) * | 1985-06-12 | 1986-12-16 | ノ−ザン テレコム リミテツド | Transmitter/receiver using optical fiber communicator |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010183179A (en) * | 2009-02-03 | 2010-08-19 | East Japan Railway Co | Optical calling device and optical communication system using same |
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