WO2022049757A1 - Pole changing circuit, control device, control method, and control program - Google Patents

Pole changing circuit, control device, control method, and control program Download PDF

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WO2022049757A1
WO2022049757A1 PCT/JP2020/033737 JP2020033737W WO2022049757A1 WO 2022049757 A1 WO2022049757 A1 WO 2022049757A1 JP 2020033737 W JP2020033737 W JP 2020033737W WO 2022049757 A1 WO2022049757 A1 WO 2022049757A1
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circuit
terminal
subscriber
current
line
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PCT/JP2020/033737
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French (fr)
Japanese (ja)
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教之 佐藤
貴行 古屋
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日本電信電話株式会社
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Priority to JP2022546845A priority Critical patent/JP7567918B2/en
Priority to PCT/JP2020/033737 priority patent/WO2022049757A1/en
Publication of WO2022049757A1 publication Critical patent/WO2022049757A1/en

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    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

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  • the present invention relates to a repolarization circuit, a control device, a control method, and a control program.
  • a signal such as coin storage is transmitted from the exchange to the terminal in order to notify the timing of storing the inserted coin such as 10 yen in the terminal at regular time intervals (for example, 56 seconds). Since the terminal of a public telephone operates with an analog circuit, the terminal is made to grasp the signal such as coin storage by a special control that inverts (reverts) the polarity of the current supplied to the terminal during a call for about 2 seconds. ..
  • FIG. 13 is a graph of signals such as coin storage.
  • the coin storage signal (communication storage signal) is expressed as a series of current change patterns that elapse in the order of periods T1, T2, T3, T4, and T5.
  • the current in the normal state during a call is turned off in the period T2, and the current is switched to the levers state in the period T3.
  • it is turned off in the period T4 and returns to the normal state in the period T5, so that the transmission of the signal such as coin storage once is completed.
  • FIG. 14 is a configuration diagram of a conventional subscriber telephone system 100Z.
  • the subscriber circuit 92 accommodated in the exchange of the telephone office and the terminal 91 of the public telephone installed in the inn or the like are connected by a subscriber cable.
  • the subscriber circuit 92 is brought into a normal state in the forward direction by passing a current in the order of terminal 92X ⁇ terminal 91 ⁇ terminal 92Y.
  • the subscriber circuit 92 is brought into a levers state in the opposite direction by passing a current in the order of terminal 92Y ⁇ terminal 91 ⁇ terminal 92X.
  • the subscriber circuit 92 is equipped with the following seven functions. These seven functions are collectively called the "BORSCHT" function in which the first letters of the alphabet are arranged. ⁇ Battery feed (power supply function) ⁇ Over voltage protection ⁇ Ringing (call signal transmission function) ⁇ Supervision (monitoring function) ⁇ Coder / decoder ⁇ Hybrid (2-wire-4 wire conversion function) ⁇ Testing (subscriber line test function)
  • Patent Document 1 describes an extended invention for smoothing a change in current inside a subscriber circuit.
  • the main subject of the present invention is to add a repolarization function to a conventional exchange at low cost.
  • the present invention is a diversion circuit that inverts the polarity of the current supplied from the subscriber circuit to the terminal.
  • a first subscriber line that supplies current from the subscriber circuit, a second subscriber line that allows current supplied from the first subscriber line to flow through the subscriber circuit, and a first terminal line that connects to the terminal. And is connected to the second terminal line, respectively.
  • a normal state in which the current from the first subscriber line is passed through the first terminal line and the current from the second terminal line after supplying power to the terminal is passed through the second subscriber line.
  • An off state that cuts off the current from the first subscriber line with respect to the first terminal line and the second terminal line.
  • FIG. 1 is a configuration diagram of a first subscriber telephone system 100A.
  • the subscriber telephone system 100A is configured by inserting a repolarization circuit 3 for transversing the current supplied from the subscriber cable to the terminal 1 between the subscriber circuit 2 of the exchange and the terminal 1 of the public telephone.
  • the subscriber circuit 2 of FIG. 1 is equipped with at least the following three functions among the "BORSCHT" functions mounted on the subscriber circuit 92 of FIG. ⁇ Battery feed (power supply function) ⁇ Coder / decoder ⁇ Hybrid (2-wire-4 wire conversion function)
  • the repolarization circuit 3 is connected to the outside via the following four wires.
  • the first subscriber line connects terminals 2X and P1.
  • the second subscriber line connects between terminals 2Y and P4.
  • the first terminal line connects between the terminal P2 and the terminal 1.
  • the second terminal line connects between the terminal P3 and the terminal 1.
  • the repolarization circuit 3 has the following four switches as a switch mechanism for realizing the repolarization function.
  • This repolarization function is a new function that is not included in the conventional "BORSCHT" function.
  • -Switch Sn1 that turns the connection between terminals P1 and P2 on and off.
  • -Switch Sr1 that turns the connection between terminals P1 and P3 on and off.
  • -Switch Sr2 that turns the connection between terminals P2 and P4 on and off.
  • -Switch Sn2 that turns the connection between terminals P3 and P4 on and off.
  • switches The sign of these switches is "S” indicating the switch, "n or r” indicating that it is turned on in the normal state (n) or the levers state (r), and the first or two from the top. It is a combination with “1 or 2" that indicates the eye. For example, in the normal state, two switches, Sn1 and Sn2, are turned on.
  • the subscriber telephone system 100A also has a control device 4 for transmitting a control signal to each switch of the pole conversion circuit 3 to control on / off.
  • the control device 4 switches each switch of the reversion circuit 3 in cooperation with the subscriber circuit 2 so that a signal such as coin storage can be transmitted at a predetermined timing such as 10 yen at regular time intervals (for example, 56 seconds). ..
  • the coin storage signal instructed by the control device 4 using the rotation function of the conversion circuit 3 includes a “response storage signal” and a “100 yen storage signal”. It is also applicable to.
  • FIG. 2 is a state transition table of the first subscriber telephone system 100A. This table associates the on / off state of the switches Sn1 and Sn2 with the on / off state of the switches Sr1 and Sr2 and the current flow state for each period T1 to T5 shown in FIG.
  • the control device 4 turns on (closes) switches Sn1 and Sn2 and turns off (opens) switches Sr1 and Sr2.
  • the current supplied from the terminal 2X of the subscriber circuit 2 passes in the order of terminal 2X ⁇ P1 ⁇ P2 ⁇ terminal 1 ⁇ P3 ⁇ P4 ⁇ 2Y, so that a constant current flows in the forward direction.
  • the control device 4 turns off all four switches Sn1, Sn2, Sr1 and Sr2. As a result, all the connections between the subscriber circuit 2 and the terminal 1 are disconnected, and the state is turned off.
  • the control device 4 turns off the switches Sn1 and Sn2 and turns on the switches Sr1 and Sr2. As a result, the current supplied from the terminal 2X of the subscriber circuit 2 passes in the order of terminal 2X ⁇ P1 ⁇ P3 ⁇ terminal 1 ⁇ P2 ⁇ P4 ⁇ 2Y, so that a constant current flows in the opposite direction.
  • FIG. 3 is a hardware configuration diagram of the control device 4.
  • the control device 4 is configured as a computer 900 having a CPU 901, a RAM 902, a ROM 903, an HDD 904, a communication I / F 905, an input / output I / F 906, and a media I / F 907.
  • the communication I / F 905 is connected to an external communication device 915.
  • the input / output I / F 906 is connected to the input / output device 916.
  • the media I / F907 reads / writes data from the recording medium 917.
  • the CPU 901 controls each processing unit by executing a program (also referred to as an application or an abbreviation thereof) read into the RAM 902.
  • the program can also be distributed via a communication line, or recorded and distributed on a recording medium 917 such as a CD-ROM.
  • FIG. 4 is a configuration diagram of the second subscriber telephone system 100B.
  • this subscriber telephone system 100B in addition to the configuration of the subscriber telephone system 100A of FIG. 1, for example, coils L1 and L2 are added to the pole circuit 3 as a first electric filter circuit provided for the purpose of smoothing the change of current. did.
  • the change in the current at the time of turning is steep, such as when the periods T1 and T2 are separated, the change in the current can be smoothed by passing the current through the coils L1 and L2. Therefore, it is possible to suppress the noise generated when the change in the current is steep.
  • FIG. 5 is a state transition table of the second subscriber telephone system 100B.
  • the combination of switching on and off in each period of the state transition table is common.
  • the difference is that in the state transition table of FIG. 5, the change of the current in each period becomes smooth. For example, from the end of the period T1 to the start of the period T2 in FIG. 13, the current momentarily (steeply) shifts from normal to off.
  • the current at the start of the period T2 is slightly weaker than that at the end of the period T1, and the current is gradually turned off in the latter half of the period T2. The current becomes weaker (see the waveform of FIG. 3 (f) of Patent Document 1).
  • FIG. 6 is a configuration diagram of the third subscriber telephone system 100C.
  • a first invalidation circuit for disabling the first electric filter circuit (coils L1 and L2) is added to the repolarization circuit 3.
  • the first invalidation circuit is composed of, for example, a switch SL1 parallel to the coil L1 and a switch SL2 parallel to the coil L2.
  • FIG. 7 is a first example of the state transition table of the third subscriber telephone system 100C.
  • the control device 4 since the influence signal does not flow, the control device 4 turns off the switches SL1 and SL2 during the entire period T1 to T5 during the inversion. As a result, a current flows through the first electric filter circuit (coils L1 and L2), so that the current states in each period are the same in FIGS. 7 and 5. Therefore, in the subscriber telephone system 100C as well as the subscriber telephone system 100B, it is possible to suppress the noise generated when the change in the current is steep.
  • FIG. 8 is a second example of the state transition table of the third subscriber telephone system 100C.
  • the control device 4 since the influence signal flows, the control device 4 turns on the switches SL1 and SL2 during the entire period T1 to T5 during the inversion. As a result, no current flows through the first electric filter circuit (coils L1 and L2), so that the current states in each period are the same in FIGS. 8 and 2. Therefore, a signal such as coin storage can be transmitted by the subscriber telephone system 100C as well as the subscriber telephone system 100A.
  • FIG. 9 is a configuration diagram of the fourth subscriber telephone system 100D.
  • a second electric filter circuit for passing an audio signal in parallel with the first electric filter circuit (coils L1 and L2) is inserted in the repolarization circuit 3.
  • the second electric filter circuit is composed of, for example, a capacitor C1 parallel to the coil L1 and a capacitor C2 parallel to the coil L2.
  • the first electric filter circuit (coils L1, L2) increases the electrical impedance for high frequency audio signals (voice, FAX signal, modem signal, etc.), and even when the high frequency voice signal is attenuated, the voice signal. Can pass through the pole circuit 3. Therefore, it is possible to appropriately prevent the case where the voice becomes difficult to hear or the case where the fax signal, the modem signal, or the like is attenuated and communication becomes impossible.
  • FIG. 10 is a state transition table of the fourth subscriber telephone system 100D.
  • the state transition table of FIG. 10 has the same first row (Sn1, Sn2) to third row (current) as the state transition table of FIG.
  • the fourth row row indicating the quality of the audio signal
  • the capacitors C1 and C2 attenuate the audio signal. Is suppressed and the sound can be heard.
  • FIG. 11 is a configuration diagram of the fifth subscriber telephone system 100E.
  • the subscriber telephone system 100E enables (activates) or disables the second electric filter circuit (capacitors C1 and C2) for passing an audio signal.
  • the circuit was added in the pole circuit 3.
  • the second invalidation circuit is composed of, for example, a switch SC1 in series with the capacitor C1 and a switch SC2 in series with the capacitor C2.
  • a potential difference is generated at both ends of the coils L1 and L2, and a potential difference is also generated at both ends of the capacitors C1 and C2, so that noise is generated.
  • FIG. 12 is a state transition table of the fifth subscriber telephone system 100E.
  • the state transition table of FIG. 12 is compared with the state transition table of FIG. 10, the following rows are the same. -The first line of FIG. 10 and the first line of FIG. 12 (switches Sn1 and Sn2 are on / off). -The second line of FIG. 10 and the third line of FIG. 12 (switches Sr1 and Sr2 are on / off). 3rd row in FIG. 10 and 5th row in FIG. 12 (current state)
  • the states of the switches SC1 and SC2 in each period of FIG. 12 will be described.
  • the control device 4 turns on the switches SC1 and SC2.
  • the voice can be heard as in the period T1 of FIG.
  • the control device 4 turns off the switches SC1 and SC2.
  • the voice cannot be heard for a short period of time.
  • the control device 4 turns off the switches SC1 and SC2, and delays the on of the switches Sr1 and Sr2 (for example, after the potential difference between the ends of the coils L1 and L2 disappears). turn on.
  • the audio signal can be heard with a delay from the on of the switches Sr1 and Sr2.
  • the control device 4 turns on the switches SC1 and SC2 after the switches Sn1 and Sn2 are turned on (for example, after the potential difference between the ends of the coils L1 and L2 disappears). As a result, the audio signal can be heard with a delay from the on of the switches Sn1 and Sn2. As described above with reference to FIG. 12, the control device 4 prevents the generation of noise by finely controlling the period for enabling the second electric filter circuit (capacitors C1 and C2) through which the audio signal is passed. Further, the subscriber circuit 2 and the repolarization circuit 3 of the subscriber telephone systems 100A to 100E may be configured as separate housings, or may be housed in the same housing (exchange).
  • the present invention is a diversion circuit 3 that inverts the polarity of the current supplied from the subscriber circuit 2 to the terminal 1.
  • the first subscriber line that supplies current from the subscriber circuit 2, the second subscriber line that sends the current supplied from the first subscriber line to the subscriber circuit 2, the first terminal line connected to the terminal 1, and so on. It is connected to the second terminal line respectively, A normal state in which the current from the second terminal line after supplying power to the terminal 1 is passed to the second subscriber line while the current from the first subscriber line is passed through the first terminal line.
  • a switch mechanism that can switch between a levers state in which the current from the first terminal line after supplying power to the terminal 1 flows to the second subscriber line while the current from the first subscriber line is flowing to the second terminal line. It is characterized by having Sn1, Sn2, Sr1, Sr2). Further, the present invention is a control device 4 that controls the switch mechanism of the repolarization circuit 3.
  • the present invention is characterized in that the repolarization circuit 3 further includes a first electric filter circuit (coils L1, L2) for smoothing a change in current.
  • a first electric filter circuit coil L1, L2
  • the noise generated when the current change is steep is reduced without using a dedicated switch equipped with an extension for smoothing the current change as in Patent Document 1. It can be suppressed by cost.
  • the present invention is characterized in that the repolarization circuit 3 further has a first invalidation circuit (switch SL1, SL2) for invalidating the first electric filter circuit at a position parallel to the first electric filter circuit. .. As a result, only the signal affected by the first electric filter circuit can be bypassed.
  • a first invalidation circuit switch SL1, SL2
  • the present invention is characterized in that the repolarization circuit 3 further has a second electric filter circuit (capacitors C1 and C2) for passing an audio signal at a position parallel to the first electric filter circuit. Thereby, even when the high frequency audio signal is attenuated when passing through the first electric filter circuit, the attenuation of the audio signal can be suppressed through the second electric filter circuit.
  • a second electric filter circuit capacitor C1 and C2
  • the present invention is characterized in that the repolarization circuit 3 further has a second invalidation circuit (switches SC1 and SC2) for invalidating the second electric filter circuit at a position in series with the second electric filter circuit. ..
  • a second invalidation circuit switching SC1 and SC2 for invalidating the second electric filter circuit at a position in series with the second electric filter circuit. ..

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

This pole changing circuit (3) for reversing the polarity of a current fed to a terminal (1) from a subscriber circuit (2) has switches (Sn1, Sn2, Sr1, Sr2) that can switch between: a normal state in which a current from a first subscriber line is caused to flow to a first terminal line, while a current having been fed to the terminal (1) and coming from a second terminal line is caused to flow to a second subscriber line; an off state in which the current from the first subscriber line is interrupted with respect to the first terminal line and the second terminal line; and a reverse state in which a current from the first subscriber line is caused to flow to the second terminal line, while a current having been fed to the terminal (1) and coming from the first terminal line is caused to flow to the second subscriber line.

Description

転極回路、制御装置、制御方法、および、制御プログラムReversing circuit, control device, control method, and control program
　本発明は、転極回路、制御装置、制御方法、および、制御プログラムに関する。 The present invention relates to a repolarization circuit, a control device, a control method, and a control program.
　加入電話のサービスは、家庭内の住人用の固定電話に加えて、硬貨を投入させて不特定多数の通話者に使用させる公衆電話も普及している。公衆電話の利用者は、あらかじめ端末に通話料となる硬貨を投入しておく。そして、通話先および通話時間に応じた通話料分だけ、投入した硬貨が端末内に収納される。 As for the service of subscriber telephones, in addition to fixed-line telephones for residents in the home, public telephones that allow coins to be inserted and used by an unspecified number of callers are also widespread. The user of a public telephone inserts coins, which are the call charges, into the terminal in advance. Then, the inserted coins are stored in the terminal by the amount of the call charge according to the call destination and the call time.
　このとき、一定時間(たとえば56秒)ごとに１０円などの投入した硬貨を端末内に収納するタイミングを知らせるために、交換機から端末に対して、硬貨収納等信号が送信される。公衆電話の端末はアナログ回路で動作するため、通話中に端末に給電される電流の極性を２秒程度反転させる（転極させる）特殊な制御により、硬貨収納等信号を端末に把握させている。 At this time, a signal such as coin storage is transmitted from the exchange to the terminal in order to notify the timing of storing the inserted coin such as 10 yen in the terminal at regular time intervals (for example, 56 seconds). Since the terminal of a public telephone operates with an analog circuit, the terminal is made to grasp the signal such as coin storage by a special control that inverts (reverts) the polarity of the current supplied to the terminal during a call for about 2 seconds. ..
　図１３は、硬貨収納等信号のグラフである。
　硬貨収納等信号（通信中収納信号）は、期間T1,T2,T3,T4,T5の順に経過する一連の電流の変化パターンとして表現される。期間T1において硬貨収納等信号を送信するタイミングになると、通話時のノーマル状態の電流が期間T2でオフになり、期間T3でレバース状態に転極する。そして、期間T4でオフになり、期間T5でノーマル状態に復帰することで、１回の硬貨収納等信号の送信が完了する。 FIG. 13 is a graph of signals such as coin storage.
The coin storage signal (communication storage signal) is expressed as a series of current change patterns that elapse in the order of periods T1, T2, T3, T4, and T5. At the timing of transmitting a signal such as coin storage in the period T1, the current in the normal state during a call is turned off in the period T2, and the current is switched to the levers state in the period T3. Then, it is turned off in the period T4 and returns to the normal state in the period T5, so that the transmission of the signal such as coin storage once is completed.
　図１４は、従来の加入電話システム１００Ｚの構成図である。
　加入電話システム１００Ｚは、電話局の交換機に収容される加入者回路９２と、旅館などに設置される公衆電話の端末９１とが、加入者系ケーブルで接続される。
　加入者回路９２は、図１３の期間T1では、端子９２Ｘ→端末９１→端子９２Ｙの順に電流を流すことで、順方向のノーマル状態とする。一方、加入者回路９２は、図１３の期間T3では、端子９２Ｙ→端末９１→端子９２Ｘの順に電流を流すことで、逆方向のレバース状態とする。 FIG. 14 is a configuration diagram of a conventional subscriber telephone system 100Z.
In the subscriber telephone system 100Z, the subscriber circuit 92 accommodated in the exchange of the telephone office and the terminal 91 of the public telephone installed in the inn or the like are connected by a subscriber cable.
In the period T1 of FIG. 13, the subscriber circuit 92 is brought into a normal state in the forward direction by passing a current in the order of terminal 92X → terminal 91 → terminal 92Y. On the other hand, in the period T3 of FIG. 13, the subscriber circuit 92 is brought into a levers state in the opposite direction by passing a current in the order of terminal 92Y → terminal 91 → terminal 92X.
　加入者回路９２は、以下の７つの機能を搭載する。この７つの機能を総称して、アルファベットの先頭文字を並べた「BORSCHT」機能と呼ぶ。
　・Battery feed（給電機能）
　・Over voltage protection（過電圧保護機能）
　・Ringing（呼出信号送信機能）
　・Supervision（監視機能）
　・Coder／decoder（符号復号化機能）
　・Hybrid（2線-4線変換機能）
　・Testing（加入者線試験機能） The subscriber circuit 92 is equipped with the following seven functions. These seven functions are collectively called the "BORSCHT" function in which the first letters of the alphabet are arranged.
・ Battery feed (power supply function)
・ Over voltage protection
・ Ringing (call signal transmission function)
・ Supervision (monitoring function)
・ Coder / decoder
・ Hybrid (2-wire-4 wire conversion function)
・ Testing (subscriber line test function)
　図１３に戻り、期間T1,T2間などの各期間の区切りでは、電流の変化が急峻（垂直のグラフ線）であったので、転極によって雑音が生じてしまい、通話中の利用者には不快であった。
　そこで、特許文献１には、加入者回路の内部に電流の変化を滑めらかにする拡張の発明が記載されている。 Returning to FIG. 13, at the breaks of each period such as between periods T1 and T2, the change in current was steep (vertical graph line), so noise was generated by the repolarization, and the user during a call It was unpleasant.
Therefore, Patent Document 1 describes an extended invention for smoothing a change in current inside a subscriber circuit.
特開昭６０－１８３８９１号公報Japanese Unexamined Patent Publication No. 60-183891
　従来の交換機に対して硬貨収納等信号を送信させるための転極機能を追加するには、専用の電気回路や電子回路を用意して交換機の内部設計を複雑に拡張するために、コストがかかってしまう。例えば、転極機能を実現するために、ノーマル状態の電流を流す第１の給電機能と、レバース状態の電流を流す第２の給電機能との双方を、同じ加入者回路内に収容する必要がある。
　さらに、特許文献１の加入者回路では、電流の変化を滑めらかにする拡張を行っており、構造が複雑だった。 In order to add a repolarization function for transmitting signals such as coin storage to a conventional exchange, it is costly to prepare a dedicated electric circuit or electronic circuit and expand the internal design of the exchange in a complicated manner. Will end up. For example, in order to realize the repolarization function, it is necessary to accommodate both the first power feeding function for passing the current in the normal state and the second power feeding function for passing the current in the levers state in the same subscriber circuit. be.
Further, the subscriber circuit of Patent Document 1 is expanded to make the change of the current smooth, and the structure is complicated.
　そこで、本発明は、従来の交換機に対して低コストで転極機能を追加することを主な課題とする。 Therefore, the main subject of the present invention is to add a repolarization function to a conventional exchange at low cost.
　前記課題を解決するために、本発明の転極回路は、以下の特徴を有する。
　本発明は、加入者回路から端末に給電する電流の極性を反転する転極回路であって、
　前記加入者回路から電流を給電する第１加入者線と、前記第１加入者線から給電された電流を前記加入者回路に流す第２加入者線と、前記端末に接続する第１端末線および第２端末線とそれぞれ接続されており、
　前記第１加入者線からの電流を前記第１端末線に流しつつ、前記端末に給電した後の前記第２端末線からの電流を前記第２加入者線に流すノーマル状態と、
　前記第１加入者線からの電流を前記第１端末線および前記第２端末線に対して遮断するオフ状態と、
　前記第１加入者線からの電流を前記第２端末線に流しつつ、前記端末に給電した後の前記第１端末線からの電流を前記第２加入者線に流すレバース状態とを切り替え可能なスイッチ機構を有することを特徴とする。 In order to solve the above problems, the repolarization circuit of the present invention has the following features.
The present invention is a diversion circuit that inverts the polarity of the current supplied from the subscriber circuit to the terminal.
A first subscriber line that supplies current from the subscriber circuit, a second subscriber line that allows current supplied from the first subscriber line to flow through the subscriber circuit, and a first terminal line that connects to the terminal. And is connected to the second terminal line, respectively.
A normal state in which the current from the first subscriber line is passed through the first terminal line and the current from the second terminal line after supplying power to the terminal is passed through the second subscriber line.
An off state that cuts off the current from the first subscriber line with respect to the first terminal line and the second terminal line.
It is possible to switch between a levers state in which the current from the first terminal line is passed through the second subscriber line after the power is supplied to the terminal while the current from the first subscriber line is passed through the second terminal line. It is characterized by having a switch mechanism.
　本発明によれば、従来の交換機に対して低コストで転極機能を追加するができる。 According to the present invention, it is possible to add a repolarization function to a conventional exchange at low cost.
本実施形態に係わる第１の加入電話システムの構成図である。It is a block diagram of the 1st subscriber telephone system which concerns on this Embodiment. 本実施形態に係わる第１の加入電話システムの状態遷移テーブルである。It is a state transition table of the first subscriber telephone system which concerns on this embodiment. 本実施形態に係わる制御装置のハードウェア構成図である。It is a hardware block diagram of the control device which concerns on this embodiment. 本実施形態に係わる第２の加入電話システムの構成図である。It is a block diagram of the 2nd subscriber telephone system which concerns on this Embodiment. 本実施形態に係わる第２の加入電話システムの状態遷移テーブルである。It is a state transition table of the second subscriber telephone system which concerns on this embodiment. 本実施形態に係わる第３の加入電話システムの構成図である。It is a block diagram of the 3rd subscriber telephone system which concerns on this Embodiment. 本実施形態に係わる第３の加入電話システムの状態遷移テーブルの第１例である。This is the first example of the state transition table of the third subscriber telephone system according to the present embodiment. 本実施形態に係わる第３の加入電話システムの状態遷移テーブルの第２例である。This is the second example of the state transition table of the third subscriber telephone system according to the present embodiment. 本実施形態に係わる第４の加入電話システムの構成図である。It is a block diagram of the 4th subscriber telephone system which concerns on this Embodiment. 本実施形態に係わる第４の加入電話システムの状態遷移テーブルである。It is a state transition table of the 4th subscriber telephone system which concerns on this embodiment. 本実施形態に係わる第５の加入電話システムの構成図である。It is a block diagram of the 5th subscriber telephone system which concerns on this embodiment. 本実施形態に係わる第５の加入電話システムの状態遷移テーブルである。It is a state transition table of the 5th subscriber telephone system which concerns on this embodiment. 硬貨収納等信号のグラフである。It is a graph of a signal such as coin storage. 従来の加入電話システムの構成図である。It is a block diagram of the conventional subscriber telephone system.
　以下、本発明の一実施形態について、図面を参照して詳細に説明する。 Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
　図１は、第１の加入電話システム１００Ａの構成図である。
　加入電話システム１００Ａは、交換機の加入者回路２と、公衆電話の端末１との間に加入者系ケーブルから端末１に給電する電流を転極するための転極回路３を挿入して構成される。図１の加入者回路２は、図１４の加入者回路９２に搭載される「BORSCHT」機能のうち、以下の３機能が少なくとも実装される。
　・Battery feed（給電機能）
　・Coder／decoder（符号復号化機能）
　・Hybrid（2線-4線変換機能） FIG. 1 is a configuration diagram of a first subscriber telephone system 100A.
The subscriber telephone system 100A is configured by inserting a repolarization circuit 3 for transversing the current supplied from the subscriber cable to the terminal 1 between the subscriber circuit 2 of the exchange and the terminal 1 of the public telephone. To. The subscriber circuit 2 of FIG. 1 is equipped with at least the following three functions among the "BORSCHT" functions mounted on the subscriber circuit 92 of FIG.
・ Battery feed (power supply function)
・ Coder / decoder
・ Hybrid (2-wire-4 wire conversion function)
　転極回路３は、以下の４本の線を介して外部と接続されている。
　第１加入者線は、端子2X,P1間を接続する。
　第２加入者線は、端子2Y,P4間を接続する。
　第１端末線は、端子P2と端末１との間を接続する。
　第２端末線は、端子P3と端末１との間を接続する。 The repolarization circuit 3 is connected to the outside via the following four wires.
The first subscriber line connects terminals 2X and P1.
The second subscriber line connects between terminals 2Y and P4.
The first terminal line connects between the terminal P2 and the terminal 1.
The second terminal line connects between the terminal P3 and the terminal 1.
　転極回路３は、転極機能を実現するためのスイッチ機構として、以下の４つのスイッチを有する。この転極機能は従来の「BORSCHT」機能には含まれていない新規の機能である。
　・端子P1,P2間の接続をオンオフするスイッチSn1
　・端子P1,P3間の接続をオンオフするスイッチSr1
　・端子P2,P4間の接続をオンオフするスイッチSr2
　・端子P3,P4間の接続をオンオフするスイッチSn2
　これらのスイッチの符号は、スイッチを示す「S」と、ノーマル状態（n）またはレバース状態（r）のときにオンにする旨を示す「nまたはr」と、上から１つ目か２つ目かを示す「1または2」との組み合わせである。例えば、ノーマル状態にする場合には、スイッチSn1,Sn2の２つのスイッチをオンにする。 The repolarization circuit 3 has the following four switches as a switch mechanism for realizing the repolarization function. This repolarization function is a new function that is not included in the conventional "BORSCHT" function.
-Switch Sn1 that turns the connection between terminals P1 and P2 on and off.
-Switch Sr1 that turns the connection between terminals P1 and P3 on and off.
-Switch Sr2 that turns the connection between terminals P2 and P4 on and off.
-Switch Sn2 that turns the connection between terminals P3 and P4 on and off.
The sign of these switches is "S" indicating the switch, "n or r" indicating that it is turned on in the normal state (n) or the levers state (r), and the first or two from the top. It is a combination with "1 or 2" that indicates the eye. For example, in the normal state, two switches, Sn1 and Sn2, are turned on.
　加入者回路２の給電機能からは常に同じ方向（端子2X→転極回路３→端子2Y）に電流を流し続ける。そして、転極回路３のスイッチのオンオフの組み合わせにより、端末１に対して順方向に電流を流すノーマル状態と、端末１に対して逆方向に電流を流すレバース状態との双方を実現できる（詳細は図２）。
　さらに、加入電話システム１００Ａには、転極回路３の各スイッチに制御信号を送信してオンオフを制御するための制御装置４も有している。制御装置４は、加入者回路２と連携して、一定時間(たとえば56秒)ごとに１０円などの所定のタイミングで硬貨収納等信号を送信できるように、転極回路３の各スイッチを切り替える。
　なお、制御装置４が転極回路３の転極機能を用いて指示する硬貨収納等信号には、図１３の通信中収納信号の他に、「応答収納信号」や「１００円収納信号」などにも適用可能である。 From the power supply function of the subscriber circuit 2, current always flows in the same direction (terminal 2X → repolarization circuit 3 → terminal 2Y). Then, by combining the on / off of the switch of the repolarization circuit 3, it is possible to realize both a normal state in which a current flows in the forward direction to the terminal 1 and a levers state in which a current flows in the reverse direction to the terminal 1 (details). Is Fig. 2).
Further, the subscriber telephone system 100A also has a control device 4 for transmitting a control signal to each switch of the pole conversion circuit 3 to control on / off. The control device 4 switches each switch of the reversion circuit 3 in cooperation with the subscriber circuit 2 so that a signal such as coin storage can be transmitted at a predetermined timing such as 10 yen at regular time intervals (for example, 56 seconds). ..
In addition to the communication storage signal shown in FIG. 13, the coin storage signal instructed by the control device 4 using the rotation function of the conversion circuit 3 includes a “response storage signal” and a “100 yen storage signal”. It is also applicable to.
　図２は、第１の加入電話システム１００Ａの状態遷移テーブルである。このテーブルは、図１３で示した期間T1～T5ごとに、スイッチSn1,Sn2のオンオフ状態と、スイッチSr1,Sr2のオンオフ状態と、電流の流れる状態とを対応付ける。
　期間T1,T5のノーマル状態では、制御装置４は、スイッチSn1,Sn2をオンにし（閉じ）、スイッチSr1,Sr2をオフにする（開く）。これにより、加入者回路２の端子2Xから給電された電流は、端子2X→P1→P2→端末１→P3→P4→2Yの順に通過するので、順方向に一定値の電流が流れる。 FIG. 2 is a state transition table of the first subscriber telephone system 100A. This table associates the on / off state of the switches Sn1 and Sn2 with the on / off state of the switches Sr1 and Sr2 and the current flow state for each period T1 to T5 shown in FIG.
In the normal state of the periods T1 and T5, the control device 4 turns on (closes) switches Sn1 and Sn2 and turns off (opens) switches Sr1 and Sr2. As a result, the current supplied from the terminal 2X of the subscriber circuit 2 passes in the order of terminal 2X → P1 → P2 → terminal 1 → P3 → P4 → 2Y, so that a constant current flows in the forward direction.
　期間T2,T4のオフ状態では、制御装置４は、４つのスイッチSn1,Sn2,Sr1,Sr2をすべてオフにする。これにより、加入者回路２と端末１との接続がすべて切断されたオフ状態となる。
　期間T3のレバース状態では、制御装置４は、スイッチSn1,Sn2をオフにし、スイッチSr1,Sr2をオンにする。これにより、加入者回路２の端子2Xから給電された電流は、端子2X→P1→P3→端末１→P2→P4→2Yの順に通過するので、逆方向に一定値の電流が流れる。 In the off state of the period T2 and T4, the control device 4 turns off all four switches Sn1, Sn2, Sr1 and Sr2. As a result, all the connections between the subscriber circuit 2 and the terminal 1 are disconnected, and the state is turned off.
In the levers state of period T3, the control device 4 turns off the switches Sn1 and Sn2 and turns on the switches Sr1 and Sr2. As a result, the current supplied from the terminal 2X of the subscriber circuit 2 passes in the order of terminal 2X → P1 → P3 → terminal 1 → P2 → P4 → 2Y, so that a constant current flows in the opposite direction.
　図３は、制御装置４のハードウェア構成図である。
　制御装置４は、ＣＰＵ９０１と、ＲＡＭ９０２と、ＲＯＭ９０３と、ＨＤＤ９０４と、通信Ｉ／Ｆ９０５と、入出力Ｉ／Ｆ９０６と、メディアＩ／Ｆ９０７とを有するコンピュータ９００として構成される。
　通信Ｉ／Ｆ９０５は、外部の通信装置９１５と接続される。入出力Ｉ／Ｆ９０６は、入出力装置９１６と接続される。メディアＩ／Ｆ９０７は、記録媒体９１７からデータを読み書きする。さらに、ＣＰＵ９０１は、ＲＡＭ９０２に読み込んだプログラム（アプリケーションや、その略のアプリとも呼ばれる）を実行することにより、各処理部を制御する。そして、このプログラムは、通信回線を介して配布したり、ＣＤ－ＲＯＭ等の記録媒体９１７に記録して配布したりすることも可能である。 FIG. 3 is a hardware configuration diagram of the control device 4.
The control device 4 is configured as a computer 900 having a CPU 901, a RAM 902, a ROM 903, an HDD 904, a communication I / F 905, an input / output I / F 906, and a media I / F 907.
The communication I / F 905 is connected to an external communication device 915. The input / output I / F 906 is connected to the input / output device 916. The media I / F907 reads / writes data from the recording medium 917. Further, the CPU 901 controls each processing unit by executing a program (also referred to as an application or an abbreviation thereof) read into the RAM 902. The program can also be distributed via a communication line, or recorded and distributed on a recording medium 917 such as a CD-ROM.
　図４は、第２の加入電話システム１００Ｂの構成図である。
　この加入電話システム１００Ｂは、図１の加入電話システム１００Ａの構成に加え、電流の変化を滑らかにする目的で設けた第１電気フィルタ回路として、例えばコイルL1,L2を転極回路３内に追加した。
　これにより、期間T1,T2の区切りなどの転極時の電流の変化が急峻であった場合でも、電流がコイルL1,L2を通過することで電流の変化を滑らかにできる。よって、電流の変化が急峻であった場合に発生していた雑音を抑制できる。 FIG. 4 is a configuration diagram of the second subscriber telephone system 100B.
In this subscriber telephone system 100B, in addition to the configuration of the subscriber telephone system 100A of FIG. 1, for example, coils L1 and L2 are added to the pole circuit 3 as a first electric filter circuit provided for the purpose of smoothing the change of current. did.
As a result, even if the change in the current at the time of turning is steep, such as when the periods T1 and T2 are separated, the change in the current can be smoothed by passing the current through the coils L1 and L2. Therefore, it is possible to suppress the noise generated when the change in the current is steep.
　図５は、第２の加入電話システム１００Ｂの状態遷移テーブルである。
　図５と図２とでは、状態遷移テーブルの各期間でのスイッチのオンオフの組み合わせは共通である。一方、相違点として、図５の状態遷移テーブルでは、各期間の電流の変化が滑らかになる。
　例えば、図１３の期間T1の終了時点から期間T2の開始時点において、電流がノーマルからオフに瞬間的に（急峻に）移行していた。一方、第２の加入電話システム１００Ｂでは、期間T2の開始時点は、期間T1の終了時点よりもやや電流が弱くなり、期間T2の後半において電流がオフになるように、期間T2の前半で徐々に電流が弱くなる（特許文献１の第３図(f)の波形を参照）。 FIG. 5 is a state transition table of the second subscriber telephone system 100B.
In FIG. 5 and FIG. 2, the combination of switching on and off in each period of the state transition table is common. On the other hand, the difference is that in the state transition table of FIG. 5, the change of the current in each period becomes smooth.
For example, from the end of the period T1 to the start of the period T2 in FIG. 13, the current momentarily (steeply) shifts from normal to off. On the other hand, in the second subscriber telephone system 100B, the current at the start of the period T2 is slightly weaker than that at the end of the period T1, and the current is gradually turned off in the latter half of the period T2. The current becomes weaker (see the waveform of FIG. 3 (f) of Patent Document 1).
　図６は、第３の加入電話システム１００Ｃの構成図である。
　この加入電話システム１００Ｃは、図４の加入電話システム１００Ｂの構成に加え、第１電気フィルタ回路（コイルL1,L2）を無効化する第１無効化回路を転極回路３内に追加した。第１無効化回路は、例えば、コイルL1と並行するスイッチSL1と、コイルL2と並行するスイッチSL2とにより構成される。
　これにより、第１電気フィルタ回路（コイルL1,L2）が影響を及ぼす信号（以下、影響信号）を加入者回路２から端末１に送信する場合には、第１電気フィルタ回路をスイッチSL1,SL2から迂回させることで、第１電気フィルタ回路の影響を適切に除外できる。 FIG. 6 is a configuration diagram of the third subscriber telephone system 100C.
In the subscriber telephone system 100C, in addition to the configuration of the subscriber telephone system 100B of FIG. 4, a first invalidation circuit for disabling the first electric filter circuit (coils L1 and L2) is added to the repolarization circuit 3. The first invalidation circuit is composed of, for example, a switch SL1 parallel to the coil L1 and a switch SL2 parallel to the coil L2.
As a result, when the signal influenced by the first electric filter circuit (coils L1, L2) (hereinafter referred to as the influence signal) is transmitted from the subscriber circuit 2 to the terminal 1, the first electric filter circuit is switched to the switches SL1 and SL2. By diverting from, the influence of the first electric filter circuit can be appropriately excluded.
　図７は、第３の加入電話システム１００Ｃの状態遷移テーブルの第１例である。
　第１例では、影響信号が流れない場合なので、制御装置４は、転極中の全期間T1～T5でスイッチSL1,SL2をオフにする。これにより、第１電気フィルタ回路（コイルL1,L2）には電流が流れるので、図７と図５とで各期間の電流の状態が同じになる。よって、加入電話システム１００Ｂと同様に加入電話システム１００Ｃでも、電流の変化が急峻であった場合に発生していた雑音を抑制できる。 FIG. 7 is a first example of the state transition table of the third subscriber telephone system 100C.
In the first example, since the influence signal does not flow, the control device 4 turns off the switches SL1 and SL2 during the entire period T1 to T5 during the inversion. As a result, a current flows through the first electric filter circuit (coils L1 and L2), so that the current states in each period are the same in FIGS. 7 and 5. Therefore, in the subscriber telephone system 100C as well as the subscriber telephone system 100B, it is possible to suppress the noise generated when the change in the current is steep.
　図８は、第３の加入電話システム１００Ｃの状態遷移テーブルの第２例である。
　第２例では、影響信号が流れる場合なので、制御装置４は、転極中の全期間T1～T5でスイッチSL1,SL2をオンにする。これにより、第１電気フィルタ回路（コイルL1,L2）には電流が流れなくなるので、図８と図２とで各期間の電流の状態が同じになる。よって、加入電話システム１００Ａと同様に加入電話システム１００Ｃでも、硬貨収納等信号を送信できる。 FIG. 8 is a second example of the state transition table of the third subscriber telephone system 100C.
In the second example, since the influence signal flows, the control device 4 turns on the switches SL1 and SL2 during the entire period T1 to T5 during the inversion. As a result, no current flows through the first electric filter circuit (coils L1 and L2), so that the current states in each period are the same in FIGS. 8 and 2. Therefore, a signal such as coin storage can be transmitted by the subscriber telephone system 100C as well as the subscriber telephone system 100A.
　図９は、第４の加入電話システム１００Ｄの構成図である。
　この加入電話システム１００Ｄは、図４の加入電話システム１００Ｂの構成に加え、第１電気フィルタ回路（コイルL1,L2）と並行して音声信号を通過させる第２電気フィルタ回路を転極回路３内に追加した。第２電気フィルタ回路は、例えば、コイルL1と並行するコンデンサC1と、コイルL2と並行するコンデンサC2とにより構成される。 FIG. 9 is a configuration diagram of the fourth subscriber telephone system 100D.
In the subscriber telephone system 100D, in addition to the configuration of the subscriber telephone system 100B of FIG. 4, a second electric filter circuit for passing an audio signal in parallel with the first electric filter circuit (coils L1 and L2) is inserted in the repolarization circuit 3. Added to. The second electric filter circuit is composed of, for example, a capacitor C1 parallel to the coil L1 and a capacitor C2 parallel to the coil L2.
　これにより、第１電気フィルタ回路（コイルL1,L2）によって周波数の高い音声信号（音声やFAX信号やモデム信号など）に対する電気的インピーダンスが増し、周波数の高い音声信号が減衰する場合でも、音声信号は転極回路３を通過できる。よって、音声が聞き取りづらくなる場合や、FAX信号やモデム信号などが減衰することで通信できなくなる場合を、適切に予防できる。 As a result, the first electric filter circuit (coils L1, L2) increases the electrical impedance for high frequency audio signals (voice, FAX signal, modem signal, etc.), and even when the high frequency voice signal is attenuated, the voice signal. Can pass through the pole circuit 3. Therefore, it is possible to appropriately prevent the case where the voice becomes difficult to hear or the case where the fax signal, the modem signal, or the like is attenuated and communication becomes impossible.
　図１０は、第４の加入電話システム１００Ｄの状態遷移テーブルである。
　図１０の状態遷移テーブルは、図５の状態遷移テーブルと第１行（Sn1,Sn2）～第３行（電流）は同じである。一方、図１０の状態遷移テーブルは、新たに第４行（音声信号の品質を示す行）として、期間T2～T5において、音声信号に一瞬雑音が聞こえるものの、コンデンサC1,C2により音声信号の減衰を抑制して音声が聞こえる状態である。 FIG. 10 is a state transition table of the fourth subscriber telephone system 100D.
The state transition table of FIG. 10 has the same first row (Sn1, Sn2) to third row (current) as the state transition table of FIG. On the other hand, in the state transition table of FIG. 10, as the fourth row (row indicating the quality of the audio signal), although noise is heard for a moment in the audio signal during the periods T2 to T5, the capacitors C1 and C2 attenuate the audio signal. Is suppressed and the sound can be heard.
　図１１は、第５の加入電話システム１００Ｅの構成図である。
　この加入電話システム１００Ｅは、図９の加入電話システム１００Ｄの構成に加え、音声信号を通過させる第２電気フィルタ回路（コンデンサC1,C2）を有効化（活性化）または無効化する第２無効化回路を転極回路３内に追加した。第２無効化回路は、例えば、コンデンサC1と直列のスイッチSC1と、コンデンサC2と直列のスイッチSC2とにより構成される。
　これにより、転極時の雑音を通話中の利用者に聞こえぬように遮断できる。なお、転極時にはコイルL1,L2の両端に電位差が発生し、コンデンサC1,C2の両端にも電位差が発生することで、雑音が発生する。 FIG. 11 is a configuration diagram of the fifth subscriber telephone system 100E.
In addition to the configuration of the subscriber telephone system 100D of FIG. 9, the subscriber telephone system 100E enables (activates) or disables the second electric filter circuit (capacitors C1 and C2) for passing an audio signal. The circuit was added in the pole circuit 3. The second invalidation circuit is composed of, for example, a switch SC1 in series with the capacitor C1 and a switch SC2 in series with the capacitor C2.
As a result, the noise at the time of turning pole can be blocked so as not to be heard by the user during the call. At the time of pole rotation, a potential difference is generated at both ends of the coils L1 and L2, and a potential difference is also generated at both ends of the capacitors C1 and C2, so that noise is generated.
　図１２は、第５の加入電話システム１００Ｅの状態遷移テーブルである。図１２の状態遷移テーブルは、図１０の状態遷移テーブルと比較すると、以下の各行は同じである。
　・図１０の第１行と図１２の第１行（スイッチSn1,Sn2のオンオフ状態）
　・図１０の第２行と図１２の第３行（スイッチSr1,Sr2のオンオフ状態）
　・図１０の第３行と図１２の第５行（電流の状態） FIG. 12 is a state transition table of the fifth subscriber telephone system 100E. When the state transition table of FIG. 12 is compared with the state transition table of FIG. 10, the following rows are the same.
-The first line of FIG. 10 and the first line of FIG. 12 (switches Sn1 and Sn2 are on / off).
-The second line of FIG. 10 and the third line of FIG. 12 (switches Sr1 and Sr2 are on / off).
3rd row in FIG. 10 and 5th row in FIG. 12 (current state)
　以下、図１２の各期間におけるスイッチSC1,SC2の状態を説明する。
　期間T1のノーマル状態では、制御装置４は、スイッチSC1,SC2をオンにする。これにより、図１０の期間T1と同様に、音声が聞こえる。期間T2,T4のオフ状態では、制御装置４は、スイッチSC1,SC2をオフにする。これにより、短期間ではあるが音声が聞こえなくなる。
　期間T3のレバース状態では、制御装置４は、スイッチSC1,SC2をオフにしつつ、スイッチSr1,Sr2のオンから遅れて（例えばコイルL1,L2の両端に電位差が無くなった後に）スイッチSC1,SC2をオンにする。これにより、スイッチSr1,Sr2のオンから遅れて音声信号が聞こえるようになる。 Hereinafter, the states of the switches SC1 and SC2 in each period of FIG. 12 will be described.
In the normal state of the period T1, the control device 4 turns on the switches SC1 and SC2. As a result, the voice can be heard as in the period T1 of FIG. In the off state of the period T2 and T4, the control device 4 turns off the switches SC1 and SC2. As a result, the voice cannot be heard for a short period of time.
In the levers state of the period T3, the control device 4 turns off the switches SC1 and SC2, and delays the on of the switches Sr1 and Sr2 (for example, after the potential difference between the ends of the coils L1 and L2 disappears). turn on. As a result, the audio signal can be heard with a delay from the on of the switches Sr1 and Sr2.
　期間T5のノーマル状態では、制御装置４は、スイッチSn1,Sn2のオンから遅れて（例えばコイルL1,L2の両端に電位差が無くなった後に）スイッチSC1,SC2をオンにする。これにより、スイッチSn1,Sn2のオンから遅れて音声信号が聞こえるようになる。
　以上図１２で説明したように、制御装置４は、音声信号を通過させる第２電気フィルタ回路（コンデンサC1,C2）を有効にする期間を細かく制御することで、雑音の発生を防止する。
　また、加入電話システム１００Ａ～１００Ｅの加入者回路２と転極回路３とを別々の筐体として構成してもよいし、同じ筐体（交換機）に収容して構成してもよい。 In the normal state of the period T5, the control device 4 turns on the switches SC1 and SC2 after the switches Sn1 and Sn2 are turned on (for example, after the potential difference between the ends of the coils L1 and L2 disappears). As a result, the audio signal can be heard with a delay from the on of the switches Sn1 and Sn2.
As described above with reference to FIG. 12, the control device 4 prevents the generation of noise by finely controlling the period for enabling the second electric filter circuit (capacitors C1 and C2) through which the audio signal is passed.
Further, the subscriber circuit 2 and the repolarization circuit 3 of the subscriber telephone systems 100A to 100E may be configured as separate housings, or may be housed in the same housing (exchange).
［効果］
　本発明は、加入者回路２から端末１に給電する電流の極性を反転する転極回路３であって、
　加入者回路２から電流を給電する第１加入者線と、第１加入者線から給電された電流を加入者回路２に流す第２加入者線と、端末１に接続する第１端末線および第２端末線とそれぞれ接続されており、
　第１加入者線からの電流を第１端末線に流しつつ、端末１に給電した後の第２端末線からの電流を第２加入者線に流すノーマル状態と、
　第１加入者線からの電流を第１端末線および第２端末線に対して遮断するオフ状態と、
　第１加入者線からの電流を第２端末線に流しつつ、端末１に給電した後の第１端末線からの電流を第２加入者線に流すレバース状態とを切り替え可能なスイッチ機構（スイッチSn1,Sn2,Sr1,Sr2）を有することを特徴とする。
　また、本発明は、転極回路３のスイッチ機構を制御する制御装置４である。 [effect]
The present invention is a diversion circuit 3 that inverts the polarity of the current supplied from the subscriber circuit 2 to the terminal 1.
The first subscriber line that supplies current from the subscriber circuit 2, the second subscriber line that sends the current supplied from the first subscriber line to the subscriber circuit 2, the first terminal line connected to the terminal 1, and so on. It is connected to the second terminal line respectively,
A normal state in which the current from the second terminal line after supplying power to the terminal 1 is passed to the second subscriber line while the current from the first subscriber line is passed through the first terminal line.
An off state that cuts off the current from the first subscriber line with respect to the first terminal line and the second terminal line,
A switch mechanism (switch) that can switch between a levers state in which the current from the first terminal line after supplying power to the terminal 1 flows to the second subscriber line while the current from the first subscriber line is flowing to the second terminal line. It is characterized by having Sn1, Sn2, Sr1, Sr2).
Further, the present invention is a control device 4 that controls the switch mechanism of the repolarization circuit 3.
　これにより、端末１に給電する電流の極性を反転する機能について考慮がなされていない加入者回路２を流用し、その外部に転極回路３を追加することで、交換機全体を新規に設計する必要がなくなる。よって、「硬貨収納等信号」を送信するための交換機の設計コストを削減し、ひいては交換機を設置する電話基地局の設備コストを削減できる。 As a result, it is necessary to newly design the entire exchange by diverting the subscriber circuit 2 for which the function of reversing the polarity of the current supplied to the terminal 1 is not taken into consideration and adding the diversion circuit 3 to the outside of the subscriber circuit 2. Is gone. Therefore, it is possible to reduce the design cost of the exchange for transmitting the "coin storage signal" and, by extension, the equipment cost of the telephone base station in which the exchange is installed.
　本発明は、転極回路３が、さらに、電流の変化を滑らかにするための第１電気フィルタ回路（コイルL1,L2）を有することを特徴とする。
　これにより、特許文献１のような電流の変化を滑めらかにする拡張が実装された専用の交換機を用いなくても、電流の変化が急峻であった場合に発生していた雑音を低コストで抑制できる。 The present invention is characterized in that the repolarization circuit 3 further includes a first electric filter circuit (coils L1, L2) for smoothing a change in current.
As a result, the noise generated when the current change is steep is reduced without using a dedicated switch equipped with an extension for smoothing the current change as in Patent Document 1. It can be suppressed by cost.
　本発明は、転極回路３が、さらに、第１電気フィルタ回路と並行する箇所に、第１電気フィルタ回路を無効化する第１無効化回路（スイッチSL1,SL2）を有することを特徴とする。
　これにより、第１電気フィルタ回路に影響される信号だけ、第１電気フィルタ回路を迂回させることができる。 The present invention is characterized in that the repolarization circuit 3 further has a first invalidation circuit (switch SL1, SL2) for invalidating the first electric filter circuit at a position parallel to the first electric filter circuit. ..
As a result, only the signal affected by the first electric filter circuit can be bypassed.
　本発明は、転極回路３が、さらに、第１電気フィルタ回路と並行する箇所に、音声信号を通過させる第２電気フィルタ回路（コンデンサC1,C2）を有することを特徴とする。
　これにより、第１電気フィルタ回路を通過するときに周波数の高い音声信号が減衰する場合でも、第２電気フィルタ回路を介して音声信号の減衰を抑制できる。 The present invention is characterized in that the repolarization circuit 3 further has a second electric filter circuit (capacitors C1 and C2) for passing an audio signal at a position parallel to the first electric filter circuit.
Thereby, even when the high frequency audio signal is attenuated when passing through the first electric filter circuit, the attenuation of the audio signal can be suppressed through the second electric filter circuit.
　本発明は、転極回路３が、さらに、第２電気フィルタ回路と直列する箇所に、第２電気フィルタ回路を無効化する第２無効化回路（スイッチSC1,SC2）を有することを特徴とする。
　これにより、第２電気フィルタ回路の両端に電位差が発生することで発生していた雑音を抑制できる。 The present invention is characterized in that the repolarization circuit 3 further has a second invalidation circuit (switches SC1 and SC2) for invalidating the second electric filter circuit at a position in series with the second electric filter circuit. ..
As a result, it is possible to suppress the noise generated by the potential difference generated at both ends of the second electric filter circuit.
　１　　　端末
　２　　　加入者回路
　３　　　転極回路
　４　　　制御装置
　１００　加入電話システム
　Ｃ１，Ｃ２　コンデンサ（第２電気フィルタ回路）
　Ｌ１，Ｌ２　コイル（第１電気フィルタ回路）
　ＳＣ１，ＳＣ２　スイッチ（第２無効化回路）
　ＳＬ１，ＳＬ２　スイッチ（第１無効化回路）
　Ｓｎ１，Ｓｎ２，Ｓｒ１，Ｓｒ２　スイッチ（スイッチ機構） 1 Terminal 2 Subscriber circuit 3 Polarization circuit 4 Control device 100 Subscriber telephone system C1, C2 Capacitor (second electric filter circuit)
L1, L2 coil (first electric filter circuit)
SC1, SC2 switch (second invalidation circuit)
SL1, SL2 switch (first invalidation circuit)
Sn1, Sn2, Sr1, Sr2 switch (switch mechanism)

Claims (8)

  1. 　加入者回路から端末に給電する電流の極性を反転する転極回路であって、
    　前記加入者回路から電流を給電する第１加入者線と、前記第１加入者線から給電された電流を前記加入者回路に流す第２加入者線と、前記端末に接続する第１端末線および第２端末線とそれぞれ接続されており、
    　前記第１加入者線からの電流を前記第１端末線に流しつつ、前記端末に給電した後の前記第２端末線からの電流を前記第２加入者線に流すノーマル状態と、
    　前記第１加入者線からの電流を前記第１端末線および前記第２端末線に対して遮断するオフ状態と、
    　前記第１加入者線からの電流を前記第２端末線に流しつつ、前記端末に給電した後の前記第１端末線からの電流を前記第２加入者線に流すレバース状態とを切り替え可能なスイッチ機構を有することを特徴とする
    　転極回路。     It is a repolarization circuit that inverts the polarity of the current supplied from the subscriber circuit to the terminal.
    A first subscriber line that supplies current from the subscriber circuit, a second subscriber line that allows current supplied from the first subscriber line to flow through the subscriber circuit, and a first terminal line that connects to the terminal. And is connected to the second terminal line, respectively.
    A normal state in which the current from the first subscriber line is passed through the first terminal line and the current from the second terminal line after supplying power to the terminal is passed through the second subscriber line.
    An off state that cuts off the current from the first subscriber line with respect to the first terminal line and the second terminal line.
    It is possible to switch between a levers state in which the current from the first terminal line is passed through the second subscriber line after the power is supplied to the terminal while the current from the first subscriber line is passed through the second terminal line. A diversion circuit characterized by having a switch mechanism.
  2. 　前記転極回路は、さらに、電流の変化を滑らかにするための第１電気フィルタ回路を有することを特徴とする
    　請求項１に記載の転極回路。     The repolarization circuit according to claim 1, further comprising a first electric filter circuit for smoothing a change in current.
  3. 　前記転極回路は、さらに、前記第１電気フィルタ回路と並行する箇所に、前記第１電気フィルタ回路を無効化する第１無効化回路を有することを特徴とする
    　請求項２に記載の転極回路。     The diversion circuit according to claim 2, further comprising a first invalidation circuit for disabling the first electric filter circuit at a position parallel to the first electric filter circuit. circuit.
  4. 　前記転極回路は、さらに、前記第１電気フィルタ回路と並行する箇所に、音声信号を通過させる第２電気フィルタ回路を有することを特徴とする
    　請求項２に記載の転極回路。     The repolarization circuit according to claim 2, further comprising a second electric filter circuit for passing an audio signal at a position parallel to the first electric filter circuit.
  5. 　前記転極回路は、さらに、前記第２電気フィルタ回路と直列する箇所に、前記第２電気フィルタ回路を無効化する第２無効化回路を有することを特徴とする
    　請求項４に記載の転極回路。     The diversion circuit according to claim 4, further comprising a second invalidation circuit for disabling the second electric filter circuit at a position in series with the second electric filter circuit. circuit.
  6. 　請求項１ないし請求項５のいずれか１項に記載の転極回路を制御する制御装置であって、
    　前記制御装置は、前記スイッチ機構に制御信号を送信することで、前記ノーマル状態、前記オフ状態、および、前記レバース状態を切り替えることを特徴とする
    　制御装置。     A control device for controlling a repolarization circuit according to any one of claims 1 to 5.
    The control device is characterized in that it switches between the normal state, the off state, and the levers state by transmitting a control signal to the switch mechanism.
  7. 　請求項１ないし請求項５のいずれか１項に記載の転極回路を制御する制御装置は、前記スイッチ機構に制御信号を送信することで、前記ノーマル状態、前記オフ状態、および、前記レバース状態を切り替えることを特徴とする
    　制御方法。     The control device for controlling the repolarization circuit according to any one of claims 1 to 5 transmits a control signal to the switch mechanism to perform the normal state, the off state, and the levers state. A control method characterized by switching between.
  8. 　コンピュータを、請求項６に記載の制御装置として機能させるための制御プログラム。 A control program for making a computer function as the control device according to claim 6.
PCT/JP2020/033737 2020-09-07 2020-09-07 Pole changing circuit, control device, control method, and control program WO2022049757A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60183891A (en) * 1984-03-02 1985-09-19 Nippon Telegr & Teleph Corp <Ntt> Subscriber circuit
JP2001197225A (en) * 2000-01-11 2001-07-19 Hitachi Ltd Subscriber circuit

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Publication number Priority date Publication date Assignee Title
JP3690181B2 (en) 1999-05-11 2005-08-31 日本電気株式会社 Charge pulse control method
JP2007013329A (en) 2005-06-28 2007-01-18 Matsushita Electric Ind Co Ltd Signal path changeover switch and signal path switching method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60183891A (en) * 1984-03-02 1985-09-19 Nippon Telegr & Teleph Corp <Ntt> Subscriber circuit
JP2001197225A (en) * 2000-01-11 2001-07-19 Hitachi Ltd Subscriber circuit

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