JPS62195963A - Talking state detector - Google Patents
Talking state detectorInfo
- Publication number
- JPS62195963A JPS62195963A JP3750186A JP3750186A JPS62195963A JP S62195963 A JPS62195963 A JP S62195963A JP 3750186 A JP3750186 A JP 3750186A JP 3750186 A JP3750186 A JP 3750186A JP S62195963 A JPS62195963 A JP S62195963A
- Authority
- JP
- Japan
- Prior art keywords
- current
- talking state
- light emitting
- telephone set
- resistor
- 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
- 238000001514 detection method Methods 0.000 claims description 11
- 230000003321 amplification Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔概 要〕
通話線路を流れるループ電流によって生ずる電流変化を
検出表示する検出回路を通話線路に直列に接続すること
により、通話線路の通話状態を検出可能とする。DETAILED DESCRIPTION OF THE INVENTION [Summary] By connecting in series to the communication line a detection circuit that detects and displays current changes caused by loop current flowing through the communication line, it is possible to detect the communication state of the communication line.
加入者が受話器を取ることによってループ電流が流れる
加入者回線における通話状態を検出する装置に関する。The present invention relates to a device for detecting a call state in a subscriber line in which a loop current flows when the subscriber picks up the telephone receiver.
従来は第3図に示すように、加入者電話機のフックスイ
ッチに通話路開閉接点に加えて通話表示用接点42を付
加し、加入者状態表示装置40内の電源と直列に接続さ
れたランプ41をこの接点42により点滅させることに
より通話状態を識別していた。Conventionally, as shown in FIG. 3, a call display contact 42 is added to the hook switch of a subscriber's telephone in addition to a call path opening/closing contact, and a lamp 41 is connected in series with a power supply in a subscriber status display device 40. The call status was identified by making the contact point 42 blink.
この第3図図示の従来技術においては、通話機のフック
スイッチに通話表示用接点を付加すると共に表示用電源
と表示灯とを備える加入者状態表示装置を設けて、電話
機とこの加入者状態表示装置との間を結線する必要があ
り、装置が複雑になるばかりでなく、設置に多大の労力
を要していた。In the prior art shown in FIG. 3, a call display contact is added to the hook switch of the telephone set, and a subscriber status display device including a display power source and an indicator light is provided to display the telephone set and the subscriber status. It is necessary to connect wires to the device, which not only complicates the device but also requires a great deal of effort to install.
加入者が受話器を取り上げることによって局と加入者と
を結ぶ回線にループ電流が流れることを利用し、第1図
に示すようにこのループ回路に加入者の通話状態を検出
表示する通話状態検出装置が直列に挿入されている。A call status detection device detects and displays the subscriber's call status on this loop circuit, as shown in Figure 1, by utilizing the fact that a loop current flows through the line connecting the station and the subscriber when the subscriber picks up the handset. are inserted in series.
従って、加入者線に流れるループ電流を直接に利用する
よう構成されている。Therefore, it is configured to directly utilize the loop current flowing through the subscriber line.
加入者が受話器を取り上げると、加入者線(A。 When the subscriber picks up the handset, the subscriber line (A).
B線)が電話機回路内で直流的に接続され、直流電流が
加入者線にループ電流(1)として流れる。B line) is connected in a direct current manner within the telephone circuit, and a direct current flows into the subscriber line as a loop current (1).
その結果、通話状態検出装置(2)はループ電流(1)
を直接に検出して表示し、電話機(3)がオフフック状
態にあることを表示することができる。As a result, the call state detection device (2) detects the loop current (1).
can be directly detected and displayed to indicate that the phone (3) is off-hook.
第2図は本発明の実施例を示すもので、局1と電話機3
との回線に本発明による通話状態検出装置2が接続され
る。FIG. 2 shows an embodiment of the present invention, in which station 1 and telephone 3
A call state detection device 2 according to the present invention is connected to the line.
この通話状態検出装置2は、局側の端子T、と電話機側
の端子T2との間に抵抗24、第1のツェナーダイオー
ド25及び第2のツェナーダイオード26とを直列に接
続すると共に、第1および第2のツェナーダイオード2
5.26の接続点にベースが接続されたトランジスタ2
2を備え、このトランジスタ22のエミッタは抵抗23
を介して電話機側端子T2に、またコレクタは発光ダイ
オード21を介して局側端子TIに接続されている。This call state detection device 2 has a resistor 24, a first Zener diode 25, and a second Zener diode 26 connected in series between a terminal T on the office side and a terminal T2 on the telephone side. and second Zener diode 2
5. Transistor 2 whose base is connected to the connection point of 26
2, the emitter of this transistor 22 is connected to a resistor 23
The collector is connected to the telephone side terminal T2 via a light emitting diode 21, and the collector is connected to the office side terminal TI via a light emitting diode 21.
全電話機3の受話器が取り上げられてオフフック状態に
なると、局1からこの通話状態検出装置2を経て電話機
3にループ電流Iが流れ、第2のツェナーダイオード2
6の端子間にはツェナー電圧■が発生し、これによりト
ランジスタ22のエミッタに介在された抵抗23には(
V−Vb、)の電圧が発生し、トランジスタ22のβが
充分おきいものとすれば(v−vb、) /R1(抵抗
23の抵抗値)なる電流がトランジスタ22のエミッタ
回路ひいてはコレクタ回路に流れる。When the handsets of all the telephones 3 are picked up and the handsets go off-hook, a loop current I flows from the station 1 to the telephone 3 via the call state detection device 2, and the second Zener diode 2
A Zener voltage ■ is generated between the terminals of the transistor 6, and as a result, the resistor 23 interposed between the emitter of the transistor 22 has (
If a voltage of V-Vb,) is generated and β of the transistor 22 is sufficiently large, a current of (v-vb,)/R1 (resistance value of the resistor 23) will flow to the emitter circuit of the transistor 22 and eventually to the collector circuit. flows.
そして、この式の■は第2のツェナーダイオード26の
端子間電圧であるためにこの電流値は−1定であり、し
たがって発光ダイオード21の輝度、定格電力などによ
り定められる所定の範囲内にこの発光ダイオード21を
流れる電流を保つことができる。Since ■ in this equation is the voltage between the terminals of the second Zener diode 26, this current value is constant -1. The current flowing through the light emitting diode 21 can be maintained.
なお、上記の抵抗24と第1のツェナーダイオード25
は、トランジスタ22を飽和状態にさせないためにベー
ス電流を制限するためのものであり、コンデンサ27は
通話の品質に影響を与えないようにするためのバイパス
コンデンサである。Note that the resistor 24 and the first Zener diode 25
is used to limit the base current so as not to saturate the transistor 22, and the capacitor 27 is a bypass capacitor so as not to affect the quality of communication.
以上、本実施例では定電圧素子としてツェナーダイオー
ドを使用した場合の例を示したが、このツェナーダイオ
ードの代りに多段直列接続されたダイオードを用いても
可能である。Although the present embodiment has been described above as an example in which a Zener diode is used as the constant voltage element, it is also possible to use diodes connected in series in multiple stages instead of the Zener diode.
通話線路中に本発明による通話状態検出装置を挿入する
のみで通話状態を検出することができ、また、通話状態
を検出するための電源、配線および電話機の付加接点も
不用なので、設備をきわめて簡易化することができる。The call status can be detected simply by inserting the call status detection device according to the present invention into the call line, and there is no need for a power supply, wiring, or additional contacts on the telephone to detect the call status, making the equipment extremely simple. can be converted into
第1図は本発明の原理ブロック図、第2図は本発明の実
施例のブロック図、第3図は従来の通話状態検出装置の
説明図である。
2・・・通話状態検出装置、21・・・発光ダイオード
、22・・・トランジスタ、23.24・・・抵抗、2
5゜26・・・ツェナーダイオード、27・・・コンデ
ンサ。FIG. 1 is a block diagram of the principle of the present invention, FIG. 2 is a block diagram of an embodiment of the present invention, and FIG. 3 is an explanatory diagram of a conventional call state detection device. 2... Call status detection device, 21... Light emitting diode, 22... Transistor, 23.24... Resistor, 2
5゜26... Zener diode, 27... Capacitor.
Claims (2)
り加入者回線(4)に流れるループ電流(I)によって
該加入者の通話状態を検出表示する通話状態検出装置(
2)を、該加入者回線(4)に直列に接続したことを特
徴とする通話状態検出装置。(1) A call state detection device (
2) is connected in series to the subscriber line (4).
22)を含む定電流回路と該定電流回路により発光電流
が供給される発光ダイオード(21)から成ることを特
徴とする特許請求の範囲第1項記載の通話状態検出装置
。(2) The call state detection device (2) includes a transistor (
22) and a light emitting diode (21) to which a light emitting current is supplied by the constant current circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3750186A JPS62195963A (en) | 1986-02-24 | 1986-02-24 | Talking state detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3750186A JPS62195963A (en) | 1986-02-24 | 1986-02-24 | Talking state detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62195963A true JPS62195963A (en) | 1987-08-29 |
Family
ID=12499272
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3750186A Pending JPS62195963A (en) | 1986-02-24 | 1986-02-24 | Talking state detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62195963A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5100658A (en) * | 1989-08-07 | 1992-03-31 | The Procter & Gamble Company | Vehicle systems for use in cosmetic compositions |
US5104646A (en) * | 1989-08-07 | 1992-04-14 | The Procter & Gamble Company | Vehicle systems for use in cosmetic compositions |
US5106609A (en) * | 1990-05-01 | 1992-04-21 | The Procter & Gamble Company | Vehicle systems for use in cosmetic compositions |
US5277899A (en) * | 1991-10-15 | 1994-01-11 | The Procter & Gamble Company | Hair setting composition with combination of cationic conditioners |
US5843418A (en) * | 1991-03-19 | 1998-12-01 | The Procter & Gamble Co. | Cosmetic compositions containing hydrophobically modified nonionic polymer and unsaturated quaternary ammonium surfactant |
CN111405452A (en) * | 2020-03-20 | 2020-07-10 | 杭州涂鸦信息技术有限公司 | Method, system and device for detecting mute mode of microphone |
-
1986
- 1986-02-24 JP JP3750186A patent/JPS62195963A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5100658A (en) * | 1989-08-07 | 1992-03-31 | The Procter & Gamble Company | Vehicle systems for use in cosmetic compositions |
US5104646A (en) * | 1989-08-07 | 1992-04-14 | The Procter & Gamble Company | Vehicle systems for use in cosmetic compositions |
US5106609A (en) * | 1990-05-01 | 1992-04-21 | The Procter & Gamble Company | Vehicle systems for use in cosmetic compositions |
US5843418A (en) * | 1991-03-19 | 1998-12-01 | The Procter & Gamble Co. | Cosmetic compositions containing hydrophobically modified nonionic polymer and unsaturated quaternary ammonium surfactant |
US5855878A (en) * | 1991-03-19 | 1999-01-05 | The Procter & Gamble Company | Cosmetic compositions containing hydrophobically modified nonionic polymer and unsaturated quaternary ammonium surfactant |
US5277899A (en) * | 1991-10-15 | 1994-01-11 | The Procter & Gamble Company | Hair setting composition with combination of cationic conditioners |
CN111405452A (en) * | 2020-03-20 | 2020-07-10 | 杭州涂鸦信息技术有限公司 | Method, system and device for detecting mute mode of microphone |
CN111405452B (en) * | 2020-03-20 | 2021-03-09 | 杭州涂鸦信息技术有限公司 | Method, system and device for detecting mute mode of microphone |
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