JPH079478Y2 - Switching circuit for receiving circuit - Google Patents
Switching circuit for receiving circuitInfo
- Publication number
- JPH079478Y2 JPH079478Y2 JP15071788U JP15071788U JPH079478Y2 JP H079478 Y2 JPH079478 Y2 JP H079478Y2 JP 15071788 U JP15071788 U JP 15071788U JP 15071788 U JP15071788 U JP 15071788U JP H079478 Y2 JPH079478 Y2 JP H079478Y2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- terminal
- relay
- public telephone
- receiver
- 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 - Lifetime
Links
Landscapes
- Prepayment Telephone Systems (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は通話の一部が制限されている電話機等の受話回
路用切り替え回路に関するものである。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a switching circuit for a receiving circuit of a telephone or the like in which a part of a call is restricted.
通話の一部が制限されている電話機等における例えば無
料特番使用の規制のもとに用いられる電話機等において
は、従来送話器の使用を規制して相手の音声だけを受話
器から聞かせるという片通話機能をもたせているものが
あった。For phones that are used under the restrictions on the use of free special numbers, for example, in phones where some calls are restricted, the use of a conventional transmitter is restricted and only the voice of the other party can be heard from the receiver. Some had a call function.
〔考案が解決しようとする課題〕 しかしながら、片通話機能をもたせた従来のこの種電話
機においては、受話口から大声で話すと音声が相手に通
じてしまうという欠点があった。[Problems to be Solved by the Invention] However, in this type of conventional telephone having a one-way call function, there is a drawback in that when the user speaks out loud from the earpiece, the voice can be communicated to the other party.
本考案は前記電話機の欠点を解消し、受話口から大声で
話しても相手に話が通じないようにした電話機等の受話
回路を提供するものである。The present invention solves the above-mentioned drawbacks of the telephone and provides a receiving circuit of a telephone or the like which prevents the other party from talking even if a loud voice is heard from the earpiece.
本考案は前記課題を解決するため、番号案内など無料特
番呼出しの際の通話の一部を制限する公衆電話機の受話
回路用切り替え回路を、前記公衆電話機に貨幣を投入す
ると信号を出力する回路に直列に接続され、該回路から
の信号により駆動されるとともに、呼び出した相手の応
答信号が到来するまでその動作を継続する１組の切り替
え回路を有するリレーと、前記公衆電話機の受話回路の
受話器端子の一端を切離して、前記リレーの切り替え回
路の共通端子側に接続し、該リレー動作により閉成され
るメーク接点と、前記受話回路のT2端子との間に接続さ
れ、前記受話器から出力される音声信号を抑制する所定
の値の音声信号抑制抵抗と、該抵抗に直列に接続された
所定の値の音声信号パス用コンデンサとにより構成した
ものである。In order to solve the above problems, the present invention uses a switching circuit for a receiving circuit of a public telephone, which restricts a part of a call when calling a free special number such as number guidance, as a circuit which outputs a signal when coins are put into the public telephone. A relay having a set of switching circuits connected in series and driven by a signal from the circuit and continuing its operation until the response signal of the called party arrives; and a receiver terminal of the receiver circuit of the public telephone. Is connected to the common terminal side of the switching circuit of the relay, and is connected between the make contact closed by the relay operation and the T2 terminal of the receiver circuit, and is output from the receiver. The audio signal suppressing resistor has a predetermined value for suppressing an audio signal, and an audio signal path capacitor having a predetermined value connected in series to the resistor.
前記の通り番号案内や手動通話などの通話の一部が制限
される電話機の受話回路において、該受話回路を切り替
える手段により相手応答信号が到来するまでの間、受話
回路を切り替えるので受話口から大声で話しても相手に
話が通じないような作用がなされる。As mentioned above, in the receiving circuit of the telephone set where a part of the call such as number guidance or manual call is restricted, the receiving circuit is switched until the other party's response signal arrives by the means for switching the receiving circuit. Even if you talk to the other party, you will not be able to communicate with the other person.
本考案の一実施例を図面とともに説明する。 An embodiment of the present invention will be described with reference to the drawings.
第１図は本考案の実施例の回路構成図、第２図は本考案
の実施例と公衆電話機との接続図である。FIG. 1 is a circuit configuration diagram of an embodiment of the present invention, and FIG. 2 is a connection diagram of the embodiment of the present invention and a public telephone.
第１図において、１は受話回路用切り替え回路、２はリ
レーＳ、３はP1端子、４はP2端子、５はリレーＳの接点
SS、６は音声信号パス用コンデンサC1、７は音声信号抑
制抵抗VR1、８はP3端子、９はP4端子、10はP5端子であ
って、受話回路用切り替え回路１は本考案の実施例を示
し、P1端子３およびP2端子４に接続されたリレーS2とP3
端子８およびP4端子９間にリレーＳの接点SS5を介して
音声信号パス用コンデンサC1 6と音声信号抑制抵抗VR1,
7が接続され、リレーＳの接点SS5はP5端子10に接続され
て構成される。上記のように構成されているので本考案
の実施例である受話回路用切り替え回路１においては、
接点SS5を有するリレーS2はP1端子３およびP2端子４か
らの電圧で動作し、また音声信号パス用コンデンサC1,6
および音声信号抑制用抵抗VR1 7はリレーS2の接点SS5に
よってP5端子10に切替えられる。In FIG. 1, 1 is a receiving circuit switching circuit, 2 is a relay S, 3 is a P1 terminal, 4 is a P2 terminal, and 5 is a contact of the relay S.
SS, 6 is a voice signal path capacitor C 1 , 7 is a voice signal suppressing resistor VR 1 , 8 is a P3 terminal, 9 is a P4 terminal, 10 is a P5 terminal, and the receiving circuit switching circuit 1 is an embodiment of the present invention. Shows relays S2 and P3 connected to terminals P1 and P2
Terminal 8 and the capacitor audio signal path via the contact SS5 relay S between P4 terminal 9 C 1 6 and the audio signal suppression resistor VR1,
7 is connected and the contact SS5 of the relay S is connected to the P5 terminal 10. With the configuration as described above, the receiver circuit switching circuit 1 according to the embodiment of the present invention,
The relay S2 having the contact SS5 is operated by the voltage from the P1 terminal 3 and the P2 terminal 4, and the voice signal path capacitors C 1 , 6
The voice signal suppressing resistor VR17 is switched to the P5 terminal 10 by the contact SS5 of the relay S2.
第２図において、11は公衆電話機の回路の一部PT、12は
電流が流れる回路の切断個所Ｘを示し、切断個所の一端
13は受話回路用切り替え回路１のP1端子３に接続され、
切断個所の他端14は同じくP2端子４に接続されている。
15は送話器Ｔ、16はT1端子、17はT2端子、18は受話器
Ｒ、19はR1端子、20はR2端子、21は回路HT、22は接続コ
ードである。第２図は本考案の実施例との接続に係る回
路の一部を示しているがその構成部品およびその他の部
分の説明は省略する。In FIG. 2, 11 is a part of the public telephone circuit PT, 12 is a disconnection point X of the circuit through which the current flows, and one end of the disconnection point is shown.
13 is connected to the P1 terminal 3 of the receiving circuit switching circuit 1 ,
The other end 14 of the cutting point is also connected to the P2 terminal 4.
Reference numeral 15 is a transmitter T, 16 is a T1 terminal, 17 is a T2 terminal, 18 is a receiver R, 19 is an R1 terminal, 20 is an R2 terminal, 21 is a circuit HT, and 22 is a connection cord. FIG. 2 shows a part of the circuit relating to the connection with the embodiment of the present invention, but the explanation of its components and other parts is omitted.
つぎに動作を説明する。Next, the operation will be described.
公衆電話機に貨幣が投入されると、貨幣投入から相手応
答信号到来の間電流が流れる回路HT21をカットする切断
個所12で、カットされた一端13とP1端子３とカットされ
た他端14とP2端子４とが接続される。送話器T15はT1端
子16及びT2端子17で回路に接続され、さらにT2端子17は
P4端子９と接続する。受話器R18は本来はR1端子19とR2
端子20に接続されているが、本考案の実施例の受話回路
用切り替え回路１との接続のため、R2端子20との直接接
続を行なわず受話器R18は接続コード22を介してP5端子1
0に接続してあるので、公衆電話機の貨幣投入により、
回路HT21に電流が流れリレーS2が動作すると、リレーS2
の動作によってリレーＳの接点SS5が切替わり音声信号
パス用コンデンサC1,6と音声信号抑制抵抗VR1,7を通る
回路が形成される。従って、大声で受話器R18に話しか
けても音声信号抑制抵抗VR1,7によって電話回線への音
声信号の送出を規制することができる。When money is thrown into a pay telephone, one end 13 and the P1 terminal 3 and the other end 14 and P2 which are cut at the cutting point 12 that cuts the circuit HT21 through which current flows from the money throwing to the arrival of the other party's response signal The terminal 4 is connected. The transmitter T15 is connected to the circuit at the T1 terminal 16 and the T2 terminal 17, and the T2 terminal 17 is
Connect with P4 terminal 9. The handset R18 is originally R1 terminal 19 and R2
Although it is connected to the terminal 20, the receiver R18 does not directly connect to the R2 terminal 20 because of the connection with the receiver circuit switching circuit 1 according to the embodiment of the present invention.
Since it is connected to 0, by inserting money into the public telephone,
When current flows in the circuit HT21 and relay S2 operates, relay S2
By this operation, the contact SS5 of the relay S is switched and a circuit is formed which passes through the audio signal path capacitors C 1 and 6 and the audio signal suppressing resistors VR1 and 7. Therefore, even if the user speaks loudly to the receiver R18, the voice signal suppression resistors VR1 and 7 can restrict the transmission of the voice signal to the telephone line.
また、局線から相手応答信号が到来すると、回路HT21の
電流はoffになり、リレーS2は復旧し、リレーＳの接点S
S5が元にもどって、本来の受話回路が形成される。Also, when the other party's response signal arrives from the station line, the current of the circuit HT21 turns off, the relay S2 recovers, and the contact S of the relay S
S5 returns to the original state and the original receiving circuit is formed.
以上説明したように、公衆電話機等において、貨幣投入
によって受話回路が切り替わり受話器からの音声入力を
規制し、相手応答信号によって復旧するようになってい
るから、相手応答信号の到来しない例えば前記無料特番
通話では相手との会話を規制し、相手応答信号の到来す
る通常の通話にはなんら影響を与えないという効果があ
る。As described above, in a public telephone or the like, the receiving circuit is switched by inserting money into the public telephone to regulate the voice input from the handset and to be restored by the other party's response signal. In the call, there is an effect that the conversation with the other party is regulated and the normal call in which the other party's response signal arrives is not affected at all.
第１図は本考案の実施例の回路構成図、第２図は本考案
の実施例と公衆電話機との接続図。１ …電話回路用切り替え回路、２…リレーＳ、３…P1端
子、４…P2端子、５…リレーＳの接点SS、６…音声パス
用コンデンサC1、７…音声信号抑制抵抗VR1、８…P3端
子、９…P4端子、10…P5端子、11…公衆電話機の回路の
一部PT、12…電流の切断個所、13…切断個所の一端、14
…切断個所の他端、15…送話器Ｔ、16…T1端子、17…T2
端子、18…受話器Ｒ、19…R1端子、20…R2端子、21…回
路HT、22…接続コード。FIG. 1 is a circuit configuration diagram of an embodiment of the present invention, and FIG. 2 is a connection diagram of the embodiment of the present invention and a public telephone. 1 ... Telephone circuit switching circuit, 2 ... Relay S, 3 ... P1 terminal, 4 ... P2 terminal, 5 ... Relay S contact SS, 6 ... Voice path capacitor C1, 7 ... Voice signal suppression resistors VR1, 8 ... P3 Terminal, 9 ... P4 terminal, 10 ... P5 terminal, 11 ... Part of the circuit of public telephone PT, 12 ... Disconnection point of current, 13 ... One end of disconnection point, 14
… The other end of the disconnection point, 15… Transmitter T, 16… T1 terminal, 17… T2
Terminal, 18 ... Handset R, 19 ... R1 terminal, 20 ... R2 terminal, 21 ... Circuit HT, 22 ... Connection cord.
Claims (1)
料特番呼出しの際の通話の一部を制限する前記公衆電話
機の受話回路用切り替え回路において、 前記公衆電話機に貨幣を投入すると信号を出力する回路
に直列に接続され、該回路からの信号により駆動される
とともに、呼び出した相手の応答信号が到来するまでそ
の動作を継続する１組の切り替え回路を有するリレー
と、 前記公衆電話機の受話回路の受話器端子の一端を切離し
て、前記リレーの切り替え回路の共通端子側に接続し、
該リレー動作により閉成されるメーク接点と、前記受話
回路のT2端子との間に接続され、前記受話器から出力さ
れる音声信号を抑制する所定の値の音声信号抑制抵抗
と、 該抵抗に直列に接続される所定の値の音声信号パス用コ
ンデンサと、 により構成されたことを特徴とする受話回路用切り替え
回路。1. A receiver circuit switching circuit for a public telephone, which limits a part of a call when calling a free special number such as a number guide from a coin-operated public telephone, outputs a signal when coin is inserted into the public telephone. A relay connected to the circuit in series, driven by a signal from the circuit, and having a set of switching circuits that continues its operation until the response signal of the called party arrives; and a receiving circuit of the public telephone. Disconnect one end of the handset terminal, connect to the common terminal side of the switching circuit of the relay,
An audio signal suppressing resistor having a predetermined value, which is connected between the make contact closed by the relay operation and the T2 terminal of the receiver circuit and suppresses an audio signal output from the receiver, and is connected in series to the resistor. A switching circuit for a receiving circuit, comprising: a capacitor for a voice signal path having a predetermined value connected to the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15071788U JPH079478Y2 (en) | 1988-11-21 | 1988-11-21 | Switching circuit for receiving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15071788U JPH079478Y2 (en) | 1988-11-21 | 1988-11-21 | Switching circuit for receiving circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0272058U JPH0272058U (en) | 1990-06-01 |
| JPH079478Y2 true JPH079478Y2 (en) | 1995-03-06 |
Family
ID=31424109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15071788U Expired - Lifetime JPH079478Y2 (en) | 1988-11-21 | 1988-11-21 | Switching circuit for receiving circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH079478Y2 (en) |
-
1988
- 1988-11-21 JP JP15071788U patent/JPH079478Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0272058U (en) | 1990-06-01 |
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