JPH04313995A - Switcher circuit - Google Patents

Switcher circuit

Info

Publication number
JPH04313995A
JPH04313995A JP3082436A JP8243691A JPH04313995A JP H04313995 A JPH04313995 A JP H04313995A JP 3082436 A JP3082436 A JP 3082436A JP 8243691 A JP8243691 A JP 8243691A JP H04313995 A JPH04313995 A JP H04313995A
Authority
JP
Japan
Prior art keywords
input
switches
output
terminals
terminal
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
JP3082436A
Other languages
Japanese (ja)
Inventor
Takaaki Hashimoto
孝昭 橋本
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.)
Nikon Corp
Original Assignee
Nikon 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 Nikon Corp filed Critical Nikon Corp
Priority to JP3082436A priority Critical patent/JPH04313995A/en
Publication of JPH04313995A publication Critical patent/JPH04313995A/en
Pending legal-status Critical Current

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  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To reduce crosstalk of a signal considerably by connecting a wire corresponding to each input of an input terminal group to only one changeover terminal of a multiple contact switch. CONSTITUTION:Each input wire of an input terminal group 6 is connected to changeover terminals of changeover switches 7-9 comprising electronic switches and each contact of the switches 7-9 having a same number of connection terminals as that of an output terminal group 10 is connected for each of 1st contacts and 2nd contacts, and each output is connected to the output terminal group 10. Open terminals 11-13 not connected anywhere are provided to changeover switches 7-9. Thus, the input wiring is only connected to each common terminal of the switches 7-9, non-use inputs of the switches 7-9 are switched to open terminals to reduce the wiring of the input part of the switches 7-9 so as to decrease unwanted radiation of the signal. Sufficient shield is taken for the output wiring by earthing or the like.

Description

【発明の詳細な説明】[Detailed description of the invention]

【０００１】0001

【産業上の利用分野】この発明は、スイッチ回路におけ
るその接続と構成法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of connecting and configuring a switch circuit.

【０００２】0002

【従来の技術】従来この種の回路は図１に示すような構
成であった。入力端子群（１）はスイッチ（２）に接続
され、さらに接点（３）、（４）にも接続されている。 各スイッチの選択信号は、出力端子群（５）に接続され
、入力端子のある１つに入力された信号はスイッチの接
続動作により任意の出力端子に出力されるように構成さ
れていた。2. Description of the Related Art Conventionally, this type of circuit has a configuration as shown in FIG. The input terminal group (1) is connected to a switch (2) and further connected to contacts (3) and (4). The selection signal of each switch was connected to the output terminal group (5), and the configuration was such that a signal input to one of the input terminals was output to an arbitrary output terminal by the connection operation of the switch.

【０００３】0003

【発明が解決しようとする課題】従来の技術においては
、入力の各端子の信号がスイッチの各端子に接続される
（図１に示す）ため、入力信号の不要の放射が大きく、
非接続チャンネルへの高周波信号でのクロストークが大
きかった。本発明はこのような問題点を解決し比較的簡
単な構成でクロストークを少なくすることを目的とする
。[Problems to be Solved by the Invention] In the conventional technology, since the signals at each input terminal are connected to each terminal of the switch (as shown in FIG. 1), unnecessary radiation of the input signal is large.
There was a lot of crosstalk in high frequency signals to unconnected channels. The present invention aims to solve these problems and reduce crosstalk with a relatively simple configuration.

【０００４】0004

【課題を解決するための手段】前記問題点の解決のため
に本発明では、図２にその例を示すように、多接点切換
スイッチを逆に使用し、入力端子群（６）の各入力に対
応する配線は、多接点スイッチの切換端子１つだけに接
続されるようしてある。また多接点スイッチの各接続接
点は、出力側で各々１番目ごと、２番目ごとでまとめて
接続され、各出力端子群（１０）へ接続されている。ま
た各スイッチには非接続の開放端子を設けている。[Means for Solving the Problems] In order to solve the above-mentioned problems, in the present invention, as shown in FIG. The wiring corresponding to is connected to only one switching terminal of the multi-contact switch. Further, each connection contact of the multi-contact switch is connected to each first and second contacts on the output side, and is connected to each output terminal group (10). Each switch is also provided with an open terminal that is not connected.

【０００５】このようにすることにより入力側の配線は
短くなり、未使用スイッチは開放端子に切り換えておく
ことにより、不要放射も減少し、非接続端子のクロスト
ークは、減少させることができる。また出力側での配線
は、アース等によりシールドを十分にすることが可能で
ある。[0005] By doing this, the wiring on the input side can be shortened, and by switching unused switches to open terminals, unnecessary radiation can be reduced, and crosstalk between unconnected terminals can be reduced. Further, the wiring on the output side can be sufficiently shielded by grounding or the like.

【０００６】[0006]

【作用】本発明においては、図２に示すように複数の入
力端子での配線が従来に比較して短くすることが可能で
（スイッチの１つの共通端子に各入力端子の１つを配線
するのみで良いので）、各スイッチで未使用入力は開放
端子に切り換えるようにするので、非接続端子チャンネ
ルの入力側からの不要放射は少なくでき、高周波でのク
ロストークが少なくすることができる。また出力側での
配線はアース等で十分なシールドをすることが可能とな
る。[Operation] In the present invention, as shown in Fig. 2, the wiring for multiple input terminals can be made shorter than in the past (one of the input terminals is wired to one common terminal of the switch). Since unused inputs are switched to open terminals using each switch, unnecessary radiation from the input side of unconnected terminal channels can be reduced, and crosstalk at high frequencies can be reduced. In addition, the wiring on the output side can be sufficiently shielded by grounding or the like.

【０００７】[0007]

【実施例】図２は、本発明の一実施例である。複数の入
力端子（６）と同数の出力端子（１０）を、同数の切換
スイッチ（７）〜（９）を配置して接続している。入力
端子群（６）の各入力線の１つ１つは、切換スイッチ（
７）〜（９）の切換端子に各々接続される。この切換ス
イッチは、ＦＥＴ等を含む電子的なスイッチで構成され
る。出力端子と同数の接続端子を持つスイッチの各接点
は、出力側で各々第１の接点ごと、第２の接点ごとで接
続され、各出力が出力群（１０）へ接続されている。 また各切換スイッチ（７）〜（９）には、何処にも配線
をしない非接続の開放端子（１１）〜（１３）を設けて
ある。このため入力の配線は、スイッチの各共通端子の
みへの接続で良く、各スイッチでの未使用入力は開放端
子に切り換えておくことにより、スイッチの入力部分で
の配線は短くでき、これによる信号の不要な放射は減少
する。一方出力側の配線は多くなるが、次段への入力と
して考えられるため、シールドをアース線等で各配線間
で実施することにより、十分な効果が得られる。これに
よってクロストークを減少できる。Embodiment FIG. 2 shows an embodiment of the present invention. A plurality of input terminals (6) and the same number of output terminals (10) are connected by arranging the same number of changeover switches (7) to (9). Each input line of the input terminal group (6) is connected to a selector switch (
7) to (9), respectively. This changeover switch is composed of an electronic switch including an FET and the like. The contacts of the switch, which have the same number of connection terminals as output terminals, are connected on the output side by a first contact and a second contact, each output being connected to an output group (10). Further, each of the changeover switches (7) to (9) is provided with unconnected open terminals (11) to (13) that are not wired anywhere. Therefore, the input wiring only needs to be connected to each common terminal of the switch, and by switching the unused inputs of each switch to open terminals, the wiring at the input part of the switch can be shortened, and the resulting signal Unwanted radiation of is reduced. On the other hand, although the number of wires on the output side increases, since it is considered as an input to the next stage, a sufficient effect can be obtained by shielding each wire with a ground wire or the like. This can reduce crosstalk.

【０００８】[0008]

【発明の効果】以上のように、本発明によれば複数の入
力端子を持つ切換スイッチにおいて、入力側での配線を
短くでき、信号の不要な放射を最小にできるので、スイ
ッチ動作での信号のクロストークを大幅に減少させるこ
とができる。As described above, according to the present invention, in a changeover switch having a plurality of input terminals, the wiring on the input side can be shortened and unnecessary signal radiation can be minimized, so that the signal during switch operation can be shortened. crosstalk can be significantly reduced.

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

【図１】従来例を示す回路図である。FIG. 1 is a circuit diagram showing a conventional example.

【図２】本発明の一実施例を示す回路図である。FIG. 2 is a circuit diagram showing one embodiment of the present invention.

【主要部分の符号の説明】１・・・　・・・　入力端子
群２、３、４・・・　・・・　複数の端子を持つスイッ
チ５・・・　・・・　出力端子群 ６・・・　・・・　入力端子群 ７、８、９・・・　・・・　複数の端子を持つスイッチ
１０・・・　・・・　出力端子群[Explanation of symbols of main parts] 1... Input terminal group 2, 3, 4... Switch with multiple terminals 5... Output terminal group 6... ... Input terminal group 7, 8, 9... ... Switch 10 with multiple terminals... ... Output terminal group

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】　　Ｎ個の入力端子と同数の出力端子との
間に同数配置されるスイッチを有し、個々の前記スイッ
チは入力側に１つの切換端子、出力側に前記出力端子と
同数の接続端子と、少なくとも１つの非接続の開放端子
を持ち、第１番目の前記入力端子は第１の前記スイッチ
の前記切換端子に接続し、第Ｎ番目の前記入力端子は第
Ｎ番目の前記スイッチの前記切換端子に接続して、第１
番目の前記出力端子は、全ての前記スイッチの出力側の
第１番目の前記接続端子に接続し、第Ｎ番目の前記出力
端子は、全ての前記スイッチの出力側の第Ｎ番目の前記
接続端子に接続した、ことを特徴とするスイッチャー回
路。1. An equal number of switches are arranged between N input terminals and the same number of output terminals, and each switch has one switching terminal on the input side and the same number of switches as the output terminals on the output side. a connection terminal and at least one unconnected open terminal, the first input terminal is connected to the switching terminal of the first switch, and the Nth input terminal is connected to the Nth switch. is connected to the switching terminal of the first
The Nth output terminal is connected to the first connection terminal on the output side of all the switches, and the Nth output terminal is connected to the Nth connection terminal on the output side of all the switches. A switcher circuit, characterized in that it is connected to.
JP3082436A 1991-02-22 1991-04-15 Switcher circuit Pending JPH04313995A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3082436A JPH04313995A (en) 1991-02-22 1991-04-15 Switcher circuit

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP3-28886 1991-02-22
JP2888691 1991-02-22
JP3082436A JPH04313995A (en) 1991-02-22 1991-04-15 Switcher circuit

Publications (1)

Publication Number Publication Date
JPH04313995A true JPH04313995A (en) 1992-11-05

Family

ID=26367030

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3082436A Pending JPH04313995A (en) 1991-02-22 1991-04-15 Switcher circuit

Country Status (1)

Country Link
JP (1) JPH04313995A (en)

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