JPH0137010B2 - - Google Patents
Info
- Publication number
- JPH0137010B2 JPH0137010B2 JP3663383A JP3663383A JPH0137010B2 JP H0137010 B2 JPH0137010 B2 JP H0137010B2 JP 3663383 A JP3663383 A JP 3663383A JP 3663383 A JP3663383 A JP 3663383A JP H0137010 B2 JPH0137010 B2 JP H0137010B2
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- transmission line
- switch
- unit
- switching state
- 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.)
- Expired
Links
- 230000005540 biological transmission Effects 0.000 claims description 55
- 238000010586 diagram Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Description
【発明の詳細な説明】
本発明は、Ｎ（ただしＮは３以上の整数）本の
現用伝送路と２本の予備伝送路との切替を行なう
ためのＮ対２伝送路切替スイツチに関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an N-to-2 transmission line changeover switch for switching between N (where N is an integer of 3 or more) working transmission lines and two backup transmission lines. be.
Ｎ対２切替スイツチは、例えば、第１図の如く
用いられる。第１図において、１００及び２００
がそれぞれＮ対２伝送路切替スイツチである。該
Ｎ対２伝送路切替スイツチ１００又は２００は、
Ｎ本の現用伝送路１５，２５，３５，４５と２本
の予備伝送路６１，６２との切替を行なうもの
で、現用伝送路が障害の場合予備伝送路によつて
現用回線を救済するために用いられる。 An N to 2 changeover switch is used, for example, as shown in FIG. In Figure 1, 100 and 200
are each an N-to-2 transmission line changeover switch. The N to 2 transmission line selection switch 100 or 200 is
This is used to switch between the N working transmission lines 15, 25, 35, 45 and the two backup transmission lines 61, 62, and in the event of a failure in the working transmission line, the backup transmission line can be used to rescue the working line. used for.
従来のＮ対２伝送路切替スイツチの構成を第２
図に示す。このＮ対２伝送路切替スイツチは、第
１、第２、第３及び第４の端子１，２，３及び４
をもち、第１の端子１と第２の端子２との間及び
第３の端子３と第４の端子４との間のみが導通状
態にある第１の切替状態Ａと、第１の端子１と第
３の端子３との間のみが導通状態にある第２の切
替状態Ｂとの２つの状態をとり得る単位スイツチ
１０′を、2N個備え、これら単位スイツチ１０′
を第２図に示す様に２行Ｎ列のマトリツクス状に
接続することにより構成されている。第２図にお
いて、１１，２１及び３１は現用局内端子、１
２，２２及び３２は現用伝送路端子、１３及び３
４は予備伝送路端子である。 The configuration of the conventional N-to-2 transmission line changeover switch is
As shown in the figure. This N-to-2 transmission line selection switch has first, second, third and fourth terminals 1, 2, 3 and 4.
and a first switching state A in which only the first terminal 1 and the second terminal 2 and between the third terminal 3 and the fourth terminal 4 are in a conductive state; The present invention includes 2N unit switches 10' that can take two states: a second switching state B in which only the terminal 1 and the third terminal 3 are in a conductive state, and these unit switches 10'
As shown in FIG. 2, they are connected in a matrix of 2 rows and N columns. In Fig. 2, 11, 21 and 31 are terminals in the current station;
2, 22 and 32 are current transmission line terminals, 13 and 3
4 is a backup transmission line terminal.
このＮ対２伝送路切替スイツチでは、単位スイ
ツチ１０′が多数必要となり、また単位スイツチ
１０′相互間の接続個所も多いため、回路規模が
大きく操作性も悪いという欠点がある。特に、高
周波信号を切替える場合には、単位スイツチ１
０′相互間の接続を同軸コネクタを介して同軸ケ
ーブルにて行なうため、これらの欠点が顕著にな
る。 This N-to-2 transmission line changeover switch requires a large number of unit switches 10' and has many connection points between the unit switches 10', resulting in a large circuit size and poor operability. In particular, when switching high frequency signals, unit switch 1
Since the connections between the two terminals 0' are made using a coaxial cable via a coaxial connector, these drawbacks become more noticeable.
本発明の目的は、これらの欠点を除去し、回路
規模が小さく操作性も簡単なＮ対２伝送路切替ス
イツチを提供することにある。 SUMMARY OF THE INVENTION An object of the present invention is to eliminate these drawbacks and provide an N-to-2 transmission line changeover switch that has a small circuit scale and is easy to operate.
本発明によれば、第１、第２、第３及び第４の
端子をもち、第１の端子１と第２の端子２との間
及び第３の端子３と第４の端子４との間のみが導
通状態にある第１の切替状態と、第１の端子１と
第３の端子３との間のみが導通状態にある第２の
切替状態と、第１の端子１と第４の端子４との間
のみが導通状態にある第３の切替状態との３つの
切替状態をとり得る単位スイツチを、Ｎ（ただし
Ｎは３以上の整数）個備え、Ｍを１から（Ｎ−
１）としたとき、第Ｍ番目の単位スイツチの第４
の端子４と第（Ｍ＋１）番目の単位スイツチの第
３の端子３とを接続することによつて構成され、
各単位スイツチの第１の端子１を現用局内端子と
し、各単位スイツチの第２の端子２を現用伝送路
端子とし、第１番目の単位スイツチの第３の端子
３を第１の予備伝送路端子とし、第Ｎ番目の単位
スイツチの第４の端子４を第２の予備伝送路端子
とするＮ対２伝送路切替スイツチが得られる。 According to the present invention, there are first, second, third and fourth terminals, and there is a terminal between the first terminal 1 and the second terminal 2 and between the third terminal 3 and the fourth terminal 4. A first switching state in which only the terminal 1 and the third terminal 3 are in a conductive state; a second switching state in which only the terminal 1 and the third terminal 3 are in a conducting state; and N (however, N is an integer of 3 or more) unit switches capable of taking three switching states including a third switching state in which only the terminal 4 is in a conductive state, and M is set from 1 to (N-
1), the fourth of the Mth unit switch
and the third terminal 3 of the (M+1)th unit switch,
The first terminal 1 of each unit switch is used as the working internal station terminal, the second terminal 2 of each unit switch is used as the working transmission line terminal, and the third terminal 3 of the first unit switch is used as the first protection transmission line terminal. An N-to-2 transmission line changeover switch is obtained in which the fourth terminal 4 of the Nth unit switch is used as the second spare transmission line terminal.
本発明に従うＮ対２伝送路切替スイツチは、各
単位スイツチの切替状態を切替えることにより、
Ｎ個の現用局内端子の中の任意の２つまでの端子
を予備伝送路端子と接続することができるもので
ある。従つて、本発明によるとＮ対２伝送路切替
スイツチが従来の半分であるＮ個の単位スイツチ
で構成できるため、回路規模が小さく、また単位
スイツチ相互間の接続も少ないため操作性も簡単
となる。 The N-to-2 transmission line changeover switch according to the present invention can achieve the following by switching the switching state of each unit switch.
Any two terminals among the N working intra-office terminals can be connected to the protection transmission line terminal. Therefore, according to the present invention, the N-to-2 transmission path changeover switch can be configured with N unit switches, which is half the number of conventional switches, so the circuit scale is small and the number of connections between the unit switches is small, making it easy to operate. Become.
次に本発明の実施例について図面を参照して説
明する。 Next, embodiments of the present invention will be described with reference to the drawings.
第３図を参照すると、本発明の一実施例による
Ｎ対２伝送路切替スイツチが示されている。本実
施例はＮが３のときの３対２伝送路切替スイツチ
である。本実施例は、Ｎ個即ち３個の単位スイツ
チ１０，２０，３０を備えている。単位スイツチ
１０，２０及び３０の各々は、４つの端子をも
ち、第１の端子１と第２の端子２との間及び第３
の端子３と第４の端子４との間のみが導通状態に
ある第１の切替状態Ａと、第１の端子１と第３の
端子３との間のみが導通状態にある第２の切替状
態Ｂと、第１の端子１と第４の端子４との間のみ
が導通状態にある第３の切替状態Ｃとの３つの切
替状態をとり得る。更に、本実施例は、Ｍを１か
ら（Ｎ−１）としたとき、即ちＭを１から２とし
たとき、第Ｍ番目の単位スイツチの第４の端子４
と第（Ｍ＋１）番目の単位スイツチの第３の端子
３とを接続することによつて構成されている。そ
して、本実施例は、各単位スイツチの第１の端子
１を現用局内端子１１，２１，３１とし、各単位
スイツチの第２の端子２を現用伝送路端子１２，
２２，３２とし、第１番目の単位スイツチ１０の
第３の端子３を第１の予備伝送路端子１３とし、
第Ｎ番目即ち第３番目の単位スイツチ３０の第４
の端子４を第２の予備伝送路端子３４とするもの
である。 Referring to FIG. 3, an N-to-2 transmission line selector switch according to one embodiment of the present invention is shown. This embodiment is a 3-to-2 transmission line changeover switch when N is 3. This embodiment includes N, that is, three unit switches 10, 20, and 30. Each of the unit switches 10, 20, and 30 has four terminals, one between the first terminal 1 and the second terminal 2, and the other between the first terminal 1 and the second terminal 2.
A first switching state A in which only the terminal 3 and the fourth terminal 4 are in a conductive state; and a second switching state in which only the first terminal 1 and the third terminal 3 are in a conducting state. Three switching states are possible: state B and a third switching state C in which only the first terminal 1 and the fourth terminal 4 are in a conductive state. Furthermore, in this embodiment, when M is set from 1 to (N-1), that is, when M is set from 1 to 2, the fourth terminal 4 of the Mth unit switch
and the third terminal 3 of the (M+1)th unit switch. In this embodiment, the first terminal 1 of each unit switch is the working in-office terminal 11, 21, 31, and the second terminal 2 of each unit switch is the working transmission line terminal 12,
22, 32, and the third terminal 3 of the first unit switch 10 is the first backup transmission line terminal 13,
The fourth unit switch 30 of the Nth or third unit switch 30
The terminal 4 is used as the second backup transmission line terminal 34.
なお、第３図において、１５，２５及び３５は
それぞれ第１、第２、第３の現用伝送路、６１及
び６２は第１及び第２の予備伝送路である。 In FIG. 3, 15, 25 and 35 are first, second and third working transmission lines, respectively, and 61 and 62 are first and second backup transmission lines.
通常、単位スイツチ１０，２０及び３０は、す
べて上述した第１の切替状態Ａ（端子１及び２間
導通、端子３及び４間導通）にある。 Normally, the unit switches 10, 20, and 30 are all in the first switching state A (conduction between terminals 1 and 2, conduction between terminals 3 and 4).
ここで、例えば、第２の現用伝送路２５が障害
のときは、単位スイツチ２０を、第２の切替状態
Ｂ（端子１及び３間導通）又は第３の切替状態Ｃ
（端子１及び４間導通）にすることにより、第２
の現用局内端子２１と第１の予備伝送路端子１３
又は第２の予備伝送路端子３４とを接続すること
ができる。同様に、第１の現用伝送路１５が障害
のときは、単位スイツチ１０を、第２の切替状態
Ｂ又は第３の切替状態Ｃにすればよく、第３の現
用伝送路３５が障害のときは、単位スイツチ３０
を、第２の切替状態Ｂ又は第３の切替状態Ｃにす
ればよい。 Here, for example, when the second working transmission line 25 has a failure, the unit switch 20 is switched to the second switching state B (conduction between terminals 1 and 3) or the third switching state C.
(Continuity between terminals 1 and 4)
The working station terminal 21 and the first backup transmission line terminal 13
Alternatively, it can be connected to the second backup transmission line terminal 34. Similarly, when the first working transmission line 15 is at fault, the unit switch 10 may be set to the second switching state B or the third switching state C; when the third working transmission line 35 is at fault, is the unit switch 30
may be set to the second switching state B or the third switching state C.
また、第１及び第２の現用伝送路１５及び２５
が障害のときは、単位スイツチ１０を第２の切替
状態Ｂにし、かつ単位スイツチ２０を第３の切替
状態Ｃにすることにより、第１の現用局内端子１
１は第１の予備伝送路端子１３に接続され、また
第２の現用局内端子２１は第２の予備伝送路端子
３４に接続される。従つて、このとき、２本の現
用伝送路１５及び２５の障害は２本の予備伝送路
６１及び６２により救済される。同様に、第２及
び第３の現用伝送路２５及び３５が障害のとき
は、単位スイツチ２０を第２の切替状態Ｂにし、
かつ単位スイツチ３０を第３の切替状態Ｃにすれ
ばよく、第１及び第３の現用伝送路１５及び３５
が障害のときは、単位スイツチ１０を第２の切替
状態Ｂにし、かつ単位スイツチ３０を第３の切替
状態Ｃにすればよい。 In addition, the first and second working transmission lines 15 and 25
When there is a failure, the unit switch 10 is set to the second switching state B, and the unit switch 20 is set to the third switching state C.
1 is connected to the first protection transmission line terminal 13, and the second working intra-office terminal 21 is connected to the second protection transmission line terminal 34. Therefore, at this time, a failure in the two working transmission lines 15 and 25 is relieved by the two backup transmission lines 61 and 62. Similarly, when the second and third working transmission lines 25 and 35 are in failure, the unit switch 20 is set to the second switching state B,
And the unit switch 30 may be set to the third switching state C, and the first and third working transmission lines 15 and 35
When there is a failure, the unit switch 10 may be set to the second switching state B, and the unit switch 30 may be set to the third switching state C.
上述した単位スイツチ１０，２０及び３０は、
それぞれ、例えばリレーあるいは電子回路等から
容易に構成することができる。 The unit switches 10, 20 and 30 described above are
Each can be easily constructed from, for example, a relay or an electronic circuit.
本実施例では、従来６個必要であつた単位スイ
ツチが３個でよいため、非常に小さくかつ操作性
の簡単な３対２伝送路切替スイツチを実現でき
る。 In this embodiment, only three unit switches are required compared to the conventional six, so a very small and easy-to-operate 3-to-2 transmission line changeover switch can be realized.
なお、上記実施例ではＮが３の場合を説明した
が、本発明ではＮが４以上の場合も同様にＮ対２
伝送路切替スイツチを構成できることはもちろん
である。 In addition, in the above embodiment, the case where N is 3 was explained, but in the present invention, even when N is 4 or more, N: 2
Of course, it is possible to configure a transmission line changeover switch.
第１図はＮ対２伝送路切替スイツチの使用例を
示した図、第２図は従来のＮ対２伝送路切替スイ
ツチの概略構成を示した図、第３図は本発明の一
実施例によるＮ対２伝送路切替スイツチの概略構
成を示した図である。
１０′，１０，２０，３０……単位スイツチ、
１１，２１，３１……現用局内端子、１２，２
２，３２……現用伝送路端子、１３，３４……予
備伝送路端子、１５，２５，３５，４５……現用
伝送路、６１，６２……予備伝送路、１００，２
００……Ｎ対２伝送路切替スイツチ。
Fig. 1 is a diagram showing an example of the use of an N-to-2 transmission line selection switch, Fig. 2 is a diagram showing a schematic configuration of a conventional N-to-2 transmission line selection switch, and Fig. 3 is an example of an embodiment of the present invention. 1 is a diagram illustrating a schematic configuration of an N-to-2 transmission line changeover switch according to FIG. 10', 10, 20, 30...unit switch,
11, 21, 31... Current station terminal, 12, 2
2, 32... Working transmission line terminal, 13, 34... Protection transmission line terminal, 15, 25, 35, 45... Working transmission line, 61, 62... Protection transmission line, 100, 2
00...N to 2 transmission line selection switch.
Claims (1)
１の端子１と第２の端子２との間及び第３の端子
３と第４の端子４との間のみが導通状態にある第
１の切替状態と、第１の端子１と第３の端子３と
の間のみが導通状態にある第２の切替状態と、第
１の端子１と第４の端子４との間のみが導通状態
にある第３の切替状態との３つの切替状態をとり
得る単位スイツチを、Ｎ（ただしＮは３以上の整
数）個備え、Ｍを１から（Ｎ−１）としたとき、
第Ｍ番目の単位スイツチの第４の端子４と第（Ｍ
＋１）番目の単位スイツチの第３の端子３とを接
続することによつて構成され、各単位スイツチの
第１の端子１を現用局内端子とし、各単位スイツ
チの第２の端子２を現用伝送路端子とし、第１番
目の単位スイツチの第３の端子３を第１の予備伝
送路端子とし、第Ｎ番目の単位スイツチの第４の
端子４を第２の予備伝送路端子とするＮ対２伝送
路切替スイツチ。1 Has a first, second, third, and fourth terminal, and only the first terminal 1 and the second terminal 2 and the third terminal 3 and the fourth terminal 4 are in a conductive state. a first switching state in which only the first terminal 1 and the third terminal 3 are in a conductive state; and a second switching state in which only the first terminal 1 and the third terminal 3 are in a conductive state; When N (however, N is an integer of 3 or more) unit switches capable of taking three switching states with a third switching state in which only one switch is in a conductive state are provided, and M is set from 1 to (N-1),
The fourth terminal 4 of the Mth unit switch and the
The first terminal 1 of each unit switch is used as the working station terminal, and the second terminal 2 of each unit switch is used as the working transmission terminal. N pairs in which the third terminal 3 of the first unit switch is the first backup transmission line terminal, and the fourth terminal 4 of the Nth unit switch is the second backup transmission line terminal. 2 transmission line selection switch.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3663383A JPS59163922A (en) | 1983-03-08 | 1983-03-08 | Changeover switch of n to two transmission line |
| CA000449018A CA1202405A (en) | 1983-03-08 | 1984-03-07 | Transmission line changeover switch |
| AU25367/84A AU578015B2 (en) | 1983-03-08 | 1984-03-07 | Transmission line changeover switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3663383A JPS59163922A (en) | 1983-03-08 | 1983-03-08 | Changeover switch of n to two transmission line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59163922A JPS59163922A (en) | 1984-09-17 |
| JPH0137010B2 true JPH0137010B2 (en) | 1989-08-03 |
Family
ID=12475236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3663383A Granted JPS59163922A (en) | 1983-03-08 | 1983-03-08 | Changeover switch of n to two transmission line |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS59163922A (en) |
| AU (1) | AU578015B2 (en) |
| CA (1) | CA1202405A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2775975B2 (en) * | 1990-03-28 | 1998-07-16 | ソニー株式会社 | Matrix switcher device |
| CN104183895B (en) * | 2014-08-29 | 2016-08-17 | 京信通信系统（中国）有限公司 | The combiner of a kind of switchable switching and device |
-
1983
- 1983-03-08 JP JP3663383A patent/JPS59163922A/en active Granted
-
1984
- 1984-03-07 AU AU25367/84A patent/AU578015B2/en not_active Ceased
- 1984-03-07 CA CA000449018A patent/CA1202405A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CA1202405A (en) | 1986-03-25 |
| JPS59163922A (en) | 1984-09-17 |
| AU578015B2 (en) | 1988-10-13 |
| AU2536784A (en) | 1984-09-13 |
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