JPS5853224A - Signal input and output switching device - Google Patents

Signal input and output switching device

Info

Publication number
JPS5853224A
JPS5853224A JP15158781A JP15158781A JPS5853224A JP S5853224 A JPS5853224 A JP S5853224A JP 15158781 A JP15158781 A JP 15158781A JP 15158781 A JP15158781 A JP 15158781A JP S5853224 A JPS5853224 A JP S5853224A
Authority
JP
Japan
Prior art keywords
switch
signal
signal input
output
output 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.)
Granted
Application number
JP15158781A
Other languages
Japanese (ja)
Other versions
JPH0241081B2 (en
Inventor
Takushi Nishikawa
西川　拓志
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP15158781A priority Critical patent/JPS5853224A/en
Publication of JPS5853224A publication Critical patent/JPS5853224A/en
Publication of JPH0241081B2 publication Critical patent/JPH0241081B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To use a resistance to an impedance element which is used in common to the input and the output and as a result to use just one switch, by connecting a signal output terminal to the resistance, grounding the junction of the output terminal and the resistance via the switch and connecting the other end of the resistance to a signal input/output terminal and an input terminal. CONSTITUTION:An end of a switch 21 is connected to a resistance 16, and the other end of the switch 21 is grounded. When this switch 21 is turned off, the signal of the signal output terminal 13 of an information device 12 is delivered to a signal input/output terminal 17 through an amplifier 14, a capacitor 15 and a resistance 16. When the switch 21 is turned on, the signal fed to the terminal 17 is applied to a signal input terminal 20 through a capacitor 18 and an amplifier 19. In such way, the resistance 16 is used as both the input impedance and the output impedance. Furthermore the switch 21 sufficies with a transistor or a mechanical switch.

Description

【発明の詳細な説明】 本発明は信号を１つの信号入出力端子より出したり入れ
たりする」賜金に用いる信号入出力切換装置に関するも
のであり、１個の抵抗で入出力インピーダンスを決める
抵抗を兼ねることができ、かつ切替のためのスイッチも
簡単なものです丑ぜることかできる信号入出力切換装置
を提供しようとするものである。[Detailed Description of the Invention] The present invention relates to a signal input/output switching device used for "giving out/inputting signals from one signal input/output terminal", and a resistor that determines the input/output impedance with one resistor. The present invention aims to provide a signal input/output switching device that can function as a signal input/output switching device, and also has a simple switch for switching.

第１図は従来例における信号入出力切換装置を示すもの
であり、映像情報装置１の信号出力端子２を出た信号は
増幅器３．コンデンサ４．出カイ　　− ンピーダンスを決める抵抗５全通って、切換スイッチ６
のａ端子に入る。この切換スイッチ６の可動接点がａ側
にあるとき信号入出力端子７に信号が出る。？′Ｋに、
信号入出力端子７より信号が入ると、切換スイッチ６の
ｂ接点を通り、入力インピーダンスを決める抵抗８に加
えられる。この信号はコンデンサ９．増幅器１０’（ｉ
ｚ通って信号入力端子１１より映像情報装置１に加えら
れる。FIG. 1 shows a conventional signal input/output switching device, in which a signal output from a signal output terminal 2 of a video information device 1 is sent to an amplifier 3. Capacitor 4. Output - Through all resistors 5 that determine impedance, selector switch 6
into the a terminal of. When the movable contact of the changeover switch 6 is on the a side, a signal is output to the signal input/output terminal 7. ? 'K,
When a signal enters from the signal input/output terminal 7, it passes through the b contact of the changeover switch 6 and is applied to the resistor 8 that determines the input impedance. This signal is connected to capacitor 9. Amplifier 10'(i
z and is applied to the video information device 1 from the signal input terminal 11.

このように、この装置では出力インピーダンスを決める
抵抗５と入力インピーダンスを決める抵抗８をそれぞれ
必要とするとともに切換スイッチ６としてはトランジス
タを用いた場合には２個必要であり、リレーを使用する
場合［ば３接点以上のものが必要となる。In this way, this device requires a resistor 5 that determines the output impedance and a resistor 8 that determines the input impedance, and when a transistor is used as the selector switch 6, two are required, and when a relay is used, [ In this case, a device with three or more contacts is required.

そこで、本発明は入力インピーダンスを決める抵抗と出
力インピーダンスを決める抵抗とを１個の抵抗で兼用さ
せ、かつ、切換用のスイッチとしてトランジスタ１個、
あるいは２接点のリレー全使用することができる信号入
出力切換装置を提供しようとするものであり、以下本発
明の実施例ｒ（３　　　一 ついて図面を参照して説明する。Therefore, in the present invention, one resistor serves as both the resistor that determines the input impedance and the resistor that determines the output impedance, and one transistor is used as a switching switch.
Alternatively, it is an attempt to provide a signal input/output switching device that can use all two-contact relays.Embodiment R (3) of the present invention will be described below with reference to the drawings.

第２図に示すように映像情報装置１２の信号出力端子は
増幅器１４．コンデンサ１５を通って抵抗１６の一端に
接続されている。この抵抗１６の他端は信号入出力端子
１７に接続されるとともにコンデンサ１８．増幅器１９
を介して映像情報装置１２の信号入力端子２０に接続さ
れている。そして、抵抗１６の信号出力端子１３側のラ
インと基準電位点間にオンオフスイッチ２１が接続され
ている。このスイッチ２１け第３図、第４図に示すよう
に１個のトランジスタで構成することができ、捷だ第５
図に示すようにリレー等の２接点のメカニカルスイッチ
で構成することができる。As shown in FIG. 2, the signal output terminal of the video information device 12 is connected to an amplifier 14. It is connected to one end of a resistor 16 through a capacitor 15. The other end of this resistor 16 is connected to a signal input/output terminal 17 and a capacitor 18. amplifier 19
It is connected to the signal input terminal 20 of the video information device 12 via. An on/off switch 21 is connected between the line on the signal output terminal 13 side of the resistor 16 and the reference potential point. This 21 switch can be constructed with one transistor as shown in Figures 3 and 4.
As shown in the figure, it can be configured with a two-contact mechanical switch such as a relay.

スイッチ２１をオフにした場合、信号出力端子１３の信
号は抵抗１６を通って信号入出力端子に出すことができ
る。スイッチ２１をオンにした場合、信号入出力端子１
７に入った信号は、コンデンサ１８．増幅器１９を通っ
て端子２０に加えられる。このように抵抗１６′ｆｆ：
入力インピーダンスとしても出力インピーダンスとして
も用いることができる０丑だ、スイッチ２１として１個
のトランジスタ、２接点のリレー等のメカニカルスイッ
チを用いることができる。When the switch 21 is turned off, the signal at the signal output terminal 13 can be outputted to the signal input/output terminal through the resistor 16. When switch 21 is turned on, signal input/output terminal 1
The signal entering 7 is transferred to capacitor 18. It is applied to terminal 20 through amplifier 19. Thus resistance 16'ff:
A mechanical switch such as one transistor or a two-contact relay can be used as the switch 21, which can be used as both an input impedance and an output impedance.

以上の通り、本発明は信号出力端子を抵抗を介して信号
入出力端子に接続するとともに、この信号入出力端子を
信号入力端子に接続し、上記抵抗の上記信号出力端子側
ラインと基準電位点間に入出力切換用のオンオフスイッ
チを設けた信−ぢ゛入出力切換装置であり１個の抵抗を
入力インピーダンス素子と出力インピーダンス素子の両
方に用いることができるとともに、スイッチとして１個
のトランジスタあるいは２接点のメカニカルスイッチを
用いることができるものである。As described above, the present invention connects a signal output terminal to a signal input/output terminal via a resistor, connects this signal input/output terminal to a signal input terminal, and connects the signal output terminal side line of the resistor to a reference potential point. This is a signal input/output switching device with an on/off switch for input/output switching in between, and one resistor can be used as both the input impedance element and the output impedance element, and one transistor or one resistor can be used as the switch. A two-contact mechanical switch can be used.

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

第１図は従来例における信号入出力切換装置の回路図、
第２図は本発明の一実施例における信号入出力切換装置
の回路図、第３図、第４図、第５図値］同装置に用いる
ことができるスイッチの回路図である。 １３・・・・・・信号出力装置、１６・・・・・・抵ノ
フ１−１５、− １７・・・・・・信号入出力装置、２０・・・・・・信
号人力部子、２１・・・・・・スイッチ。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名第１
図 ＠２図 第３図 第４図 第５図 ／Ｇ １２３−Figure 1 is a circuit diagram of a conventional signal input/output switching device.
FIG. 2 is a circuit diagram of a signal input/output switching device according to an embodiment of the present invention, and FIGS. 3, 4, and 5 are circuit diagrams of switches that can be used in the same device. 13...Signal output device, 16...Reinforcer 1-15, -17...Signal input/output device, 20...Signal human power section, 21 ······switch. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure @2 Figure 3 Figure 4 Figure 5/G 123-

Claims (1)

【特許請求の範囲】[Claims] 信号出力端子を抵抗を介して信号入出力端子に接続する
とともに、この信号入出力端子を信号入力端子に接続し
、上記抵抗の上記信号出力端子側ラインヒ基準電位点間
に入出力切換用のオンオフスイッチを設けた信号入出力
切換装置。The signal output terminal is connected to the signal input/output terminal via a resistor, and this signal input/output terminal is connected to the signal input terminal, and the on/off switch for input/output switching is established between the line reference potential point on the signal output terminal side of the resistor. A signal input/output switching device equipped with a switch.
JP15158781A 1981-09-24 1981-09-24 Signal input and output switching device Granted JPS5853224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15158781A JPS5853224A (en) 1981-09-24 1981-09-24 Signal input and output switching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15158781A JPS5853224A (en) 1981-09-24 1981-09-24 Signal input and output switching device

Publications (2)

Publication Number Publication Date
JPS5853224A true JPS5853224A (en) 1983-03-29
JPH0241081B2 JPH0241081B2 (en) 1990-09-14

Family

ID=15521770

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15158781A Granted JPS5853224A (en) 1981-09-24 1981-09-24 Signal input and output switching device

Country Status (1)

Country Link
JP (1) JPS5853224A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6236406U (en) * 1985-08-20 1987-03-04

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4873616U (en) * 1971-12-17 1973-09-13

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4873616U (en) * 1971-12-17 1973-09-13

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6236406U (en) * 1985-08-20 1987-03-04

Also Published As

Publication number Publication date
JPH0241081B2 (en) 1990-09-14

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