JPS5875363A - Transmitting circuit of public charging pulse - Google Patents

Transmitting circuit of public charging pulse

Info

Publication number
JPS5875363A
JPS5875363A JP17215481A JP17215481A JPS5875363A JP S5875363 A JPS5875363 A JP S5875363A JP 17215481 A JP17215481 A JP 17215481A JP 17215481 A JP17215481 A JP 17215481A JP S5875363 A JPS5875363 A JP S5875363A
Authority
JP
Japan
Prior art keywords
current
circuit
circuits
constant current
controlling
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
JP17215481A
Other languages
Japanese (ja)
Other versions
JPH0218631B2 (en
Inventor
Yoshihiro Jin
神　吉広
Kazuo Hamasato
和雄 浜里
Masahiko Ono
大野　正日子
Yoshito Sakurai
桜井　義人
Kenzo Hasegawa
長谷川　賢造
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.)
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Nippon Electric 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 Fujitsu Ltd, Hitachi Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP17215481A priority Critical patent/JPS5875363A/en
Publication of JPS5875363A publication Critical patent/JPS5875363A/en
Publication of JPH0218631B2 publication Critical patent/JPH0218631B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/28—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP with meter at substation or with calculation of charges at terminal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Meter Arrangements (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

PURPOSE:To improve the suppression properties of charging noises and to decrease the working delay time in a forcible disconnection mode, by driving an equivalent feed power supply in a current supplying circuit with a constant current source and controlling the constant current source with the output signal of a filter which feeds the step signal for transmission of the charging pulse. CONSTITUTION:The control signals given from charging pulse transmission controlling terminals 46 and 56 are fed to filter parts 61 and 71 consisting of constant power supply integration circuits 43 and 53 and CR integration circuits 42 and 52 via buffer circuits 44 and 54, respectively. The outputs of the parts 61 and 71 are fed to current supply controlling constant current parts 41 and 51 which generate current signals for control of the current supply properties. The current supplying circuits 40 and 50 which supply currents to a subscriber circuit 2 are controlled by an equivalent feed power supply proportional to the output signals of the parts 41 and 51. The circuits 40 and 50 are connected between the communication line and earth/battery, and each circuit is converted into a double circuit in which the output sides have adverse polarities to each other between the normal side 62 and the reverse side 72. Thus the suppression properties can be improved for the charging noises to realize an integrated structure of circuits.

Description

【発明の詳細な説明】 本発明は１即公衆電話機へ課金パルスを送出する自動電
話交換機における公衆用課金パルス送出に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to sending out a public charging pulse in an automatic telephone exchange that immediately sends out a charging pulse to a public telephone.

第１図は従来の構成例であって課金パルス送出用トラン
ク（ＴＲＫ）は加入者線路２を介して加入者端末１に接
続して使用され該トランク（ＴＲＫ）はインタフタンス
３，４，６．７とコンデンサ５．８からなるＬＣフィル
タ（ＬＣＦ）と電流反転リレー接点９，１０，１１．１
２と電流供給回路１３等の電磁部品により構成されてお
シ課金パルス送出時は電流反転リレー接点９，１０及び
１１．１２を反転動作させるとともに反転に伴う急激な
電流変化を前記ＬＣフィルタ（ＬＣＦ　）で吸収し加入
者端末に対しては雑音の少ない第２図に示すような課金
パルスＬＡＩを送出する構成をしていた。第２図におい
て、２０は電流反転リレー９，１０の制御信号、３０は
電流反転リレー１１．１２の制御信号である。FIG. 1 shows an example of a conventional configuration in which a charging pulse sending trunk (TRK) is used by connecting to a subscriber terminal 1 via a subscriber line 2. LC filter (LCF) consisting of .7 and capacitor 5.8 and current reversal relay contacts 9, 10, 11.1
2, a current supply circuit 13, and other electromagnetic components.When sending out charging pulses, the current reversing relay contacts 9, 10, and 11. ), and transmits a low-noise billing pulse LAI as shown in FIG. 2 to the subscriber terminal. In FIG. 2, 20 is a control signal for current reversing relays 9 and 10, and 30 is a control signal for current reversing relays 11 and 12.

このような従来の課金・母ルス送出用トランクは電磁部
品により構成されており小型軽量化や集積化が出来なく
、また回路の接続、切断動作時かならず雑音除去フィル
タが動作してしまい応答収容収納信号送出時間も長くな
り、かつ強制切断時も加入者ループ電流１．がゼロにな
るまで１００ｍ５前後の時間がかかり公衆課金パルス送
出回路の無効保留時間が長く々る等の欠点があった。Conventional trunks for charging and transmitting signals are made up of electromagnetic parts and cannot be made smaller, lighter, or more integrated, and the noise removal filter always operates when connecting or disconnecting circuits, making it difficult to accommodate and store responses. The signal transmission time becomes longer, and even during forced disconnection, the subscriber loop current is 1. It takes about 100 m5 for the pulse to become zero, and the public charge pulse sending circuit has a long invalid hold time.

本発明は、電流供給回路内の等価給電電源を定電流源で
駆動するとともに、該定電流源は課金パルス送出のステ
ップ信号を入力とするフィルタの出力信号で制御するよ
うな構成にしたもので、電子化または集積回路化に適し
優れた課金雑音抑圧特性を有し強制切断時の動作遅延時
間も短かく出来る等を特徴とした公衆用課金パルス送出
回路を提供するものスアり以下詳細に説明する。The present invention has a configuration in which an equivalent power supply in a current supply circuit is driven by a constant current source, and the constant current source is controlled by an output signal of a filter that receives a step signal for sending charging pulses as input. The present invention provides a charging pulse sending circuit for public use, which is suitable for computerization or integrated circuit implementation, has excellent charging noise suppression characteristics, and can shorten operation delay time during forced disconnection.The present invention will be described in detail below. do.

第４図は本発明の構成例であり、同一の回路がノーマル
側とレバース側にあり、Ａ、Ｂ線の出力の極性が逆極性
となるように配置する。FIG. 4 shows a configuration example of the present invention, in which the same circuit is provided on the normal side and the reverse side, and the circuits are arranged so that the polarities of the outputs of the A and B lines are opposite.

１は加入者端末、２は加入者線路、４０．５０は電流供
給回路、４１．５ノは電流供給回路制御用定電流源であ
る。４２．５２はＣＲ積分回路、４３．５３は定電流積
分回路であシ、これらはフィルタ部６１．７１を構成す
る。４４．５４はバッファ回路、４５．５５はフィルタ
制御スイッチ、４６．５６は課金パルス送出制御端子、
６θはフィルタ制御スイッチ用制御端子である。1 is a subscriber terminal, 2 is a subscriber line, 40.50 is a current supply circuit, and 41.5 is a constant current source for controlling the current supply circuit. 42.52 is a CR integration circuit, and 43.53 is a constant current integration circuit, which constitute a filter section 61.71. 44.54 is a buffer circuit, 45.55 is a filter control switch, 46.56 is a billing pulse sending control terminal,
6θ is a control terminal for a filter control switch.

次に動作について説明する。第４図の課金・やルス送出
制御端子４６．５６に第３図に示す課金・ぐルス送出信
号４７．５７を各々に与える。応答収納信号（Ｔ１時間
）を送出する場合フィルタ制御スイッチ４４．４５を閉
成しておくと、課金パルス送出信号４７．５７はバッフ
ァ回路４４．５４の入力に印加され、該バッファ回路４
４．５４の出力が直接電流供給制御用定電流源４１．５
１に伝達され、該電流供給制御用定電流源４１．５１の
出力により電流供給回路４０．５０を動作することによ
り、第３図の加入者ループ電流ＬＡ２に示すような課金
パルス送出信号に即応した応答収納信号を送出すること
か出来る。また第３図の加入者ループ電流ＬＡ２に示す
課金パルス信号（Ｔ２時間）を送出する場合、フィルタ
制御スイッチ４５．５５をフィルタ制御信号端子６θを
介して開放することにより、課金パルス送出信号４７゜
５７はバッファ回路４４．５４を介して、ステップ入力
に対して第５図の実線に示す如き伝達関数を有する定電
流積分回路４３，５３、ＣＲ積分回路４２．５２からな
るフィルタ部６１．７１を経て、電流供給回路４０．５
０の等価給電電源を作る電流供給制御用定電流源４Ｊ　
、５１を駆動するため、第３図の加入者ループ電流ＬＡ
２に示す如くなめらかな電流変化で加入者端末に課金・
ぐルス信号を送出することかできる。Next, the operation will be explained. Billing/Guru transmission signals 47.57 shown in FIG. 3 are applied to the billing/Guru transmission control terminals 46, 56 in FIG. 4, respectively. When transmitting the response storage signal (T1 time), if the filter control switch 44.45 is closed, the charging pulse transmission signal 47.57 is applied to the input of the buffer circuit 44.54, and the buffer circuit 4
The output of 4.54 is a constant current source for direct current supply control 41.5
1, and by operating the current supply circuit 40.50 by the output of the constant current source 41.51 for current supply control, it immediately responds to the billing pulse sending signal as shown in the subscriber loop current LA2 in FIG. It is possible to send a response acknowledgment signal. Furthermore, when transmitting the billing pulse signal (time T2) shown in the subscriber loop current LA2 in FIG. 3, the billing pulse sending signal 47 degrees is 57 connects a filter section 61.71, which is composed of constant current integration circuits 43, 53 and CR integration circuit 42.52, which have a transfer function as shown by the solid line in FIG. Through, current supply circuit 40.5
Constant current source 4J for current supply control that creates an equivalent power supply of 0
, 51, the subscriber loop current LA of FIG.
As shown in Figure 2, smooth current changes can be used to charge and charge subscriber terminals.
It can also send out virus signals.

次に時刻Ｔ３で加入者端末への供給電流を速断する場合
、前述の応答収納信号送出と同様にフィルタ制御スイッ
チ４５．５５を、フィルタ制御信号端子６０を介して閉
成することにより、フィルタ部６１．７Ｊを通過するこ
となしに課金・母ルス送出制御信号４６．５６がバッフ
ァ回路４４．５４を介して電流供給制御用定電流源を駆
動するため、それに応じて電流供給回路４０．５０は、
第３図の加入者ループ電流ＬＡ２のＴ３に示す如き加入
者端末への給電電流を速断することが可能である。Next, when the supply current to the subscriber terminal is quickly cut off at time T3, the filter control switch 45, 55 is closed via the filter control signal terminal 60 in the same manner as in the case of sending out the response accommodation signal described above. 61.7J, the charging/bus sending control signal 46.56 drives the constant current source for current supply control via the buffer circuit 44.54, so the current supply circuit 40.50 changes accordingly. ,
It is possible to quickly cut off the power supply current to the subscriber terminal as shown at T3 of the subscriber loop current LA2 in FIG.

第６図は実施例の具体的構成である。バッファ回路３０
７，４０７は、課金パルス送出制御信号により開閉する
電子スイッ−ｙ’ｚｏｏ、２ｏθと抵抗１０１，１０２
，１０３及び２０１，２０２゜２０３により決まる電圧
をオペアンプ１ｏ４゜、２０４で受信し、前記オペアン
プ１０４　、、２θ４の次段の定電流積分回路３０２に
出方するとともに当該定電流積分回路３０２の定電流源
１１ｏ。FIG. 6 shows a specific configuration of the embodiment. Buffer circuit 30
7,407 is an electronic switch y'zoo, 2oθ and resistors 101, 102 which are opened and closed by a charging pulse sending control signal.
, 103 and 201, 202° 203 is received by the operational amplifier 1o4°, 204, and outputted to the constant current integrating circuit 302 at the next stage of the operational amplifiers 104, 2θ4, and the constant current of the constant current integrating circuit 302. Source 11o.

１１ノ及び２１０，２１１にバイアスを与える。11 and 210 and 211.

定電流積分回路３０２，４０２はオペアンプ１０８゜２
０８、抵抗１０５，１０７，２０５，２０７、容量１０
６，２０６で構成される積分回路と該積分回路によシ駆
動される定電流源１１θ、ｉｉｉ及び２１０，２１１と
容量１１２，２１２からなる電流積分回路とから構成さ
れる。また次段の抵抗１１３，１１４，２１３，２１４
と容量１１５゜２１５によりＣＲ積分回路３０３，４０
３を構成する。そして、定電流積分回路３０２，４０２
とＣＲ積分回路３０３，４０３とでフィルタ部３ｏ４゜
４θ４を構成する。当該フイ火夕部３θ４．４０４′、
１１ はステップ信号入力に対して公知の如＜　ｆ（ｓ）で与
えられ、第５図の一点鎖線に示す如き出方特性を有して
いるが、ここで第５図に示すｔｏの時点で前記の定電流
回路１１０，１１１，２１０，２１１がバッファ回路３
０７，４０７によりバイアスされるため飽和し、第５図
の実線の如き出力電圧をｖＡ、ＶＢに発生する。電流供
給制御用定電流部３０５゜４０５はオペアンプ１１６，
２１６、抵抗１１７゜２１７、トランジスタ１１８，２
１８により構成されており、公知の如くオペアンプ１１
６の入力ＶＡ％オペアンゾ１１６の入力Ｖ、の電圧変化
を抵抗１１７．２１７で除算した電流変化に変換する機
能を有する。なお、本例では電圧電流変換をオペアンプ
１１６，２１６により構成しているが、抵抗１１７．２
１７とトランジスタ１１８，２１８のみで構成すること
も可能である。従って前記フィルタ部３０４．４０４で
作成された第５図の実線に示すなめらかに変化する電圧
がオペアンプ１１６．２１６の人、力Ｖム＋ＶＢとして
与えられるため、電流供給制御用定電流部３θ５，４θ
５のトランジスタ１１８，２１８のコレクタ電流変化も
電圧ＶＡ、　ｖＢの変化の如くなめらかに変化する。電
流供給部３０６−　、３０７は、抵抗１２６，１２７の
直流抵抗値と抵抗２１６，２１７の直流抵抗値を等しく
Ｒｒ　とおきカレントミラー１１９．２１９のミラー比
を８１他方のカレントミラー１２０゜２２０のミラー比
をｂとしてトランジスタ１２４゜２１４とオペアンプ１
２２，２２２、抵抗１２１゜１２３．２２１，２２３で
決まる増幅率をＡ１前記電流供給制御用定電流部３０５
，４０５のトランジスタ１１８，２１８のコレクタ電流
をＩ。とじ、電流供給部３０６，４０６が供給する電流
■Ｌは加入者端末（線路を含めた負荷抵抗）をＲｅとす
電流供給制御用定電流部３０５，４０５の出力電流■。Constant current integration circuits 302 and 402 are operational amplifiers 108°2
08, resistance 105, 107, 205, 207, capacitance 10
6, 206; a current integrating circuit consisting of constant current sources 11θ, iii driven by the integrating circuit; 210, 211; and capacitors 112, 212. Also, the next stage resistors 113, 114, 213, 214
CR integration circuit 303, 40 with capacity 115°215
3. And constant current integration circuits 302, 402
and CR integration circuits 303 and 403 constitute a filter section 3o4°4θ4. The said filament part 3θ4.404',
11 is given by < f(s) as well known for the step signal input, and has an output characteristic as shown by the dashed line in FIG. 5. Here, at the time of to shown in FIG. The constant current circuits 110, 111, 210, 211 are the buffer circuit 3.
07 and 407, it is saturated and output voltages as shown by the solid line in FIG. 5 are generated at vA and VB. The constant current section 305°405 for controlling current supply is an operational amplifier 116,
216, resistor 117°217, transistor 118,2
18, as is well known, the operational amplifier 11
It has a function of converting a voltage change at the input V of the op-amp 116 into a current change divided by a resistor 117.217. In this example, voltage-current conversion is configured by operational amplifiers 116 and 216, but resistor 117.2
17 and transistors 118 and 218 only. Therefore, the smoothly changing voltage shown by the solid line in FIG.
The changes in the collector currents of the transistors 118 and 218 of No. 5 also change smoothly like the changes in the voltages VA and vB. The current supply units 306- and 307 set the DC resistance values of the resistors 126 and 127 to be equal to the DC resistance values of the resistors 216 and 217, and set the mirror ratio of the current mirrors 119 and 219 to 81. Transistor 124°214 and operational amplifier 1 with ratio b
22, 222, resistor 121° 123. The amplification factor determined by 221, 223 is A1, the constant current section 305 for current supply control.
, 405, the collector current of the transistors 118, 218 is I. The current L supplied by the current supply units 306 and 406 is the output current of the constant current unit 305 and 405 for current supply control, where Re is the subscriber terminal (load resistance including the line).

が電流供給部３０６，４０６の等価給電電源を形成して
いることがわかる。従って前述の如き電流供給制御用定
電流部３０５，４０５の出力がなめらかな変化をすれば
電流供給部３０６，４０６の等癲給電電源がなめらかに
変化することとなり、それにつれ加入者端末への給電電
流ＩＬもなめらかに変化する。この一連の動作をノーマ
ル側レバース側を第３図に示す課金パルス送出信号４７
　、５７の如く交互に動作させることにより、第３図の
加入者ループ電流ＬＡ２のＴ２に示す如き課金パルス信
号を加入者端末に送出することか可能となる。It can be seen that the current supply units 306 and 406 form an equivalent power supply. Therefore, if the output of the constant current sections 305, 405 for current supply control as described above changes smoothly, the constant power supply of the current supply sections 306, 406 changes smoothly, and accordingly, the power supply to the subscriber terminals changes smoothly. The current IL also changes smoothly. This series of operations is carried out by the charging pulse sending signal 47 shown in FIG.
, 57, it becomes possible to send a billing pulse signal as shown at T2 of the subscriber loop current LA2 in FIG. 3 to the subscriber terminal.

次にフィルタ制御スイッチは電子スイッチ１０９゜２０
９及び４０９，５０９により構成され、バッファ回路３
０７，４０７の出力と電流供給制御用定電流部の入力と
を抵抗１１４，２１４を介して電子スイッチ１０９，２
０９で接続する。フィルタ制御スイッチはフィルタ制御
信号により該電子スイッチ１０９，２０９を閉成する。Next, the filter control switch is an electronic switch 109°20
9 and 409, 509, the buffer circuit 3
The output of 07, 407 and the input of the constant current section for controlling current supply are connected to electronic switches 109, 2 via resistors 114, 214.
Connect with 09. The filter control switch closes the electronic switches 109, 209 according to the filter control signal.

するとバッファ回路３０７，４０７の出力信号が抵抗１
１４゜２１４、容量１１５，２１５を介して電流供給制
御用定電流部３０５，４０５の入力に伝達される。Then, the output signals of the buffer circuits 307 and 407 are
14° 214, and is transmitted to the input of the constant current section 305, 405 for current supply control via the capacitors 115, 215.

前記抵抗１１４，２１４と容量１１５，２１５によって
決まる時定数を充分小さくしてあればバッファ回路３０
７，４０７の出力信号すなわちステップパルスが電流供
給制御用定電流部３０５　、４０５に印加され、電流供
給部３０６，４０６にステッノパルスの電流を供給する
。従って電流供給部３０６．４０６はステップノクルス
状の電流により前述の如く等価給電電源を形成するため
、電流供給部３０６，４０６からの加入者端末への供電
電流もステップ状に変化する。よって、加入者ループ電
流ＬＡ２の時刻Ｔｌに示す応答収納信号及び時刻Ｔ３に
示す強制切断信号の送出を可能とする。If the time constant determined by the resistors 114, 214 and capacitors 115, 215 is made sufficiently small, the buffer circuit 30
The output signal 7,407, that is, the step pulse, is applied to the current supply control constant current sections 305, 405, and the current supply section 306, 406 is supplied with a steno pulse current. Therefore, since the current supply units 306 and 406 form an equivalent power supply as described above using a step-noise current, the current supplied to the subscriber terminal from the current supply units 306 and 406 also changes in a step manner. Therefore, it is possible to send out the response accommodation signal shown at time Tl of the subscriber loop current LA2 and the forced disconnection signal shown at time T3.

なお、フィルタ制御用電子スイッチは抵抗１１４゜２１
４を介して電流供給制御用定電流部３０５と接続されて
いるが、前記フィルタ制御用電子スイッチが容量１１５
，２１５の充放電に瞬時的に充分耐えうるなら抵抗１１
４，２１４は省略してもかまわない。In addition, the electronic switch for filter control has a resistance of 114°21
4, the electronic switch for filter control is connected to the constant current section 305 for controlling the current supply through the capacitor 115.
, 215, the resistor 11
4,214 may be omitted.

本発明によれば、し」・型軽量化が容易かつ電子化が可
能な利点があり、自動電話交換機等の公衆用課金パルス
送出回路に利用することが出来る。According to the present invention, there are advantages in that it is easy to reduce the size and weight, and it can be computerized, and it can be used in public billing pulse sending circuits such as automatic telephone exchanges.

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

第１図は従来の課金パルス送出回路を示す回路図、第２
図は第１図の動作を示すタイムチャート、第３図は本発
明の実施例の動作を示すタイムチャート、第４図は本発
明の一実施例による課金パルス送出回路のブロック図、
第５図は実施例の課金雑音除去フィルタの出力波形、第
６図は第４図の具体例を示す回路図である。 １・・−加入者端末、２・・・加入者線路、１６，７１
゜３０４．４０４・・・フィルタ部、４０，５０，３０
６゜４０６・・・電流供給部、３０１・・・電池、４１
，５１゜３０５．４０５・・・電流供給制御用定電流部
、４５ｊ５５．１０９，２０９，４０９，５０９・・・
フィルタ制御スイッチ、４４，５４，３０７，４０７・
・・バッファ回路、４６，５６，１００，２００，４０
０゜５００・・・課金パルス送出−制御端子、６０・・
・フィルタ制御スイッチ用制御端子。 特許出願人　　沖電気工業株式会社 日本電信電話公社 日本電気株式会社 株式会社日立製作所 第１頁の続き ■出　願　人　株式会社日立製作所 東京都千代田区丸の内−丁目５ 番１号 ■出　願　人　富士通株式会社 川崎市中原区上小田中１０１５番地 手続補正書（自発） 昭和　　４７．２１−３Ｂ 特許庁長官　殿 ｌ　事件の表示 昭和５６年特　許　願第１７２１５４号２　発明の名称 公衆用課金・ぞルス送出回路 ３　補正をする者 事件との関係　　　特許出願人 住　所（〒１０５）　　東京都港区虎ノ門１丁目７番１
２号１代理人　　　　　　　　　（外４名）居、所（〒
１０５）　　東京都港区虎ノ門１丁目７査１２号正する
。 特許請求の範囲 （１）課金・ぐシス送出用制御信号を入力と”する定電
流積分回路とＣＲ積分回路とにより構成されるて電流供
給特性制御用の電流信号を発生する電流供給制御用定電
流源、及び通信線と地気、電池との間に接続され前記電
流供給制御用定電流源の出力信号に比例した等価給電電
源で電流を加入者端末に供給する電流供給部とからなる
回路を２回路有し両回路の出力側は互いに逆極性となる
ように接続したことを特徴とする公衆用課金・ぐルス送
出回路。 （２）課金・母ルス送出用制御信号を入力とする定電流
積分回路とＣＲ積分回路とにより構成されるフィルタ部
と、前記フィルタ部の出力を入力として電流供給特性制
御用の電流信号を発生する電流供給制御用定電流源、及
び通話線と地気、電池との間に接続され前記電流供給制
御用電流源の出力信号に比例した等価給電電源で電流を
加入者端末と前記電流供給制御用定電流源の入力端子間
に制御信号により開閉可能なスイッチを設は該スイッチ
の閉成により該電流供給制御用定電流源を直接課金・ぐ
シス送出用制御信号により駆動し該課金・ぐシス送出用
制御信号により電流供給部による加入者端末への供給電
流を速断、速供給するものとからなる回路を２回路有し
両回路の出力側は互いに逆極性となるように接続したこ
とを特徴とする公衆用課金・ぞルス送出回路。Figure 1 is a circuit diagram showing a conventional billing pulse sending circuit;
1 is a time chart showing the operation of FIG. 1, FIG. 3 is a time chart showing the operation of an embodiment of the present invention, and FIG. 4 is a block diagram of a billing pulse sending circuit according to an embodiment of the present invention.
FIG. 5 is an output waveform of the billing noise removal filter of the embodiment, and FIG. 6 is a circuit diagram showing a specific example of FIG. 4. 1...-Subscriber terminal, 2...Subscriber line, 16,71
゜304.404... Filter section, 40, 50, 30
6゜406...Current supply unit, 301...Battery, 41
, 51゜305.405... constant current section for current supply control, 45j55.109, 209, 409, 509...
Filter control switch, 44, 54, 307, 407・
...Buffer circuit, 46, 56, 100, 200, 40
0゜500...Billing pulse sending-control terminal, 60...
・Control terminal for filter control switch. Patent Applicant Oki Electric Industry Co., Ltd. Nippon Telegraph and Telephone Public Corporation NEC Corporation Hitachi Ltd. Continued from page 1 ■Applicant Hitachi Ltd. 5-1 Marunouchi-chome, Chiyoda-ku, Tokyo ■Applicant Fujitsu Stock Company Address: 1015 Kamiodanaka, Nakahara-ku, Kawasaki City Procedural amendment (voluntary) Showa 47.21-3B Commissioner of the Japan Patent Office Tol Indication of the case 1982 Patent Application No. 172154 2 Name of the invention Public billing/transmission circuit 3 Relationship with the case of the person making the amendment Patent applicant address (〒105) 1-7-1 Toranomon, Minato-ku, Tokyo
No. 2, 1 agent (4 others) residence, location (〒
105) Correct No. 12, 1-7, Toranomon, Minato-ku, Tokyo. Scope of Claims (1) A current supply control device that generates a current signal for controlling current supply characteristics, which is composed of a constant current integrator circuit and a CR integrator circuit that receives a control signal for billing and system sending as input. A circuit consisting of a current source, and a current supply section that is connected between the communication line, the ground, and the battery and supplies current to the subscriber terminal with an equivalent power supply proportional to the output signal of the constant current source for controlling the current supply. (2) A public billing and bus signal transmission circuit having two circuits and connected so that the output sides of both circuits have opposite polarities to each other. a filter section constituted by a current integration circuit and a CR integration circuit; a constant current source for current supply control that receives the output of the filter section as input and generates a current signal for controlling current supply characteristics; a switch that can be opened and closed by a control signal between a subscriber terminal and an input terminal of the constant current source for controlling current supply, which is connected between the battery and an equivalent power supply proportional to the output signal of the current source for controlling current supply; When the switch is closed, the current supply control constant current source is directly driven by the billing and system sending control signal, and the current supply unit supplies the current to the subscriber terminal using the billing and system sending control signal. 1. A public billing/returning circuit characterized in that it has two circuits each consisting of one circuit for rapidly cutting and one for rapidly supplying current, and that the output sides of both circuits are connected so that the polarities are opposite to each other.

Claims (2)

【特許請求の範囲】[Claims] （１）課金パルス送出用制御信号を入力とする定電流積
分回路とＣＲ積分回路とにより構成されるフィルタ部を
駆動するとともに該定電流積分回路のバイアスを与える
バッファ回路と、前記フィルタ部の出力を入力として電
流供給特性制御用の電流信号を発生する電流供給制御用
定電流源、及び通信線と地気、電池との間に接続され前
記電流供給制御用定電流源の出力信号に比例した等価給
電電源で電流を加入者端末に供給する電流供給部とから
なる回路を２回路有し両回路の出力側は互い・に逆極性
となるように接続したことを特徴とする公衆用課金パル
ス送出回路。(1) A buffer circuit that drives a filter section constituted by a constant current integrating circuit and a CR integrating circuit that receives a control signal for sending billing pulses as input, and also provides a bias for the constant current integrating circuit, and an output of the filter section. a constant current source for controlling the current supply which generates a current signal for controlling the current supply characteristics with input as input; A public billing pulse comprising two circuits each comprising a current supply unit that supplies current to a subscriber terminal using an equivalent power supply, and the output sides of both circuits are connected to each other so that the polarities are opposite to each other. Sending circuit. （２）課金・母ルス送出用制御信号を入力とする定電流
積分回路とＣＲ積分回路とにより構成されるフィルタ部
を駆動するとともに該定電流積分回路のバイアスを与え
るバッファ回路と、前記フィルタ部の出力を入力として
電流供給特性制御用の電流信号を発生する電流供給制御
用定電流源、及び通話線と地気、電池との間に接続され
前記電流供給制御用定電流源の出力信号に比例した等価
給電電源で電流を加入者端末に供給する電流供給部と、
前記バッファ回路の出力と前記電流供給制御用定電流源
の入力端子間に制御信号により開閉可能なスイッチを設
は該スイッチの閉成により該電流供給制御用定電流源を
直接課金パルス送出用制御信号を入力とするバッファ回
路により駆動し該課金パルス送出用制御信号により電流
供給部による加入者端末への供給電流を速断、速供給す
るものとからなる回路を２回路有し両回路の出力側は互
いに逆極性となるように接続したことを特徴とする公衆
用課金・ぐルス送出回路。(2) A buffer circuit that drives a filter section constituted by a constant current integration circuit and a CR integration circuit that receives a control signal for billing/bus transmission as input, and also provides a bias for the constant current integration circuit, and the filter section. a constant current source for controlling current supply which generates a current signal for controlling current supply characteristics by inputting the output of a current supply section that supplies current to the subscriber terminal with a proportional equivalent power supply;
A switch that can be opened and closed by a control signal is provided between the output of the buffer circuit and the input terminal of the constant current source for controlling current supply, and when the switch is closed, the constant current source for controlling current supply is directly controlled for sending charging pulses. The output side of both circuits has two circuits, each of which is driven by a buffer circuit that inputs a signal, and which quickly cuts and quickly supplies the current supplied to the subscriber terminal by the current supply section in response to the billing pulse sending control signal. A public billing/gurus transmission circuit characterized in that the circuits are connected so as to have opposite polarities to each other.
JP17215481A 1981-10-29 1981-10-29 Transmitting circuit of public charging pulse Granted JPS5875363A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17215481A JPS5875363A (en) 1981-10-29 1981-10-29 Transmitting circuit of public charging pulse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17215481A JPS5875363A (en) 1981-10-29 1981-10-29 Transmitting circuit of public charging pulse

Publications (2)

Publication Number Publication Date
JPS5875363A true JPS5875363A (en) 1983-05-07
JPH0218631B2 JPH0218631B2 (en) 1990-04-26

Family

ID=15936561

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17215481A Granted JPS5875363A (en) 1981-10-29 1981-10-29 Transmitting circuit of public charging pulse

Country Status (1)

Country Link
JP (1) JPS5875363A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6076856A (en) * 1983-10-04 1985-05-01 Fujitsu Ltd Transmission system of metering pulse
JPS6076855A (en) * 1983-10-04 1985-05-01 Fujitsu Ltd Transmission system of metering pulse
JPS60130253A (en) * 1983-12-19 1985-07-11 Oki Electric Ind Co Ltd Metering pulse transmission system
JPS61224767A (en) * 1985-03-29 1986-10-06 Nec Corp Feeding circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6937786B2 (en) 2019-01-31 2021-09-22 Imv株式会社 Vibration control device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5112709A (en) * 1974-07-11 1976-01-31 Fujitsu Ltd Fuirutasonyu jokyohoshiki
JPS5337307A (en) * 1976-09-20 1978-04-06 Hitachi Ltd Transmission system for charging signal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5112709A (en) * 1974-07-11 1976-01-31 Fujitsu Ltd Fuirutasonyu jokyohoshiki
JPS5337307A (en) * 1976-09-20 1978-04-06 Hitachi Ltd Transmission system for charging signal

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6076856A (en) * 1983-10-04 1985-05-01 Fujitsu Ltd Transmission system of metering pulse
JPS6076855A (en) * 1983-10-04 1985-05-01 Fujitsu Ltd Transmission system of metering pulse
JPH0223111B2 (en) * 1983-10-04 1990-05-22 Fujitsu Kk
JPS60130253A (en) * 1983-12-19 1985-07-11 Oki Electric Ind Co Ltd Metering pulse transmission system
JPS61224767A (en) * 1985-03-29 1986-10-06 Nec Corp Feeding circuit

Also Published As

Publication number Publication date
JPH0218631B2 (en) 1990-04-26

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