KR940007124Y1 - Incoming call detecting circuit - Google Patents

Incoming call detecting circuit Download PDF

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KR940007124Y1
KR940007124Y1 KR92003654U KR920003654U KR940007124Y1 KR 940007124 Y1 KR940007124 Y1 KR 940007124Y1 KR 92003654 U KR92003654 U KR 92003654U KR 920003654 U KR920003654 U KR 920003654U KR 940007124 Y1 KR940007124 Y1 KR 940007124Y1
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South Korea
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signal
incoming
ring
incoming call
detection circuit
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KR92003654U
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Korean (ko)
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KR930022508U (en
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이종균
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이헌조
주식회사 금성사
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M19/00Current supply arrangements for telephone systems
    • H04M19/02Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Function (AREA)
  • Devices For Supply Of Signal Current (AREA)

Abstract

내용 없음.No content.

Description

전화착신 검출회로Telephone call detection circuit

제1도는 종래 전화착신 검출회로 구성도.1 is a block diagram of a conventional incoming call detection circuit.

제2도는 종래 전화착신 검출 회로도.2 is a conventional incoming call detection circuit diagram.

제3도는 본 고안 전화착신 검출회로 구성도.3 is a block diagram of the present invention incoming call detection circuit.

제4도는 본 고안 전화착신 검출회로도.4 is a circuit incoming call detection circuit of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 링거소자 2 : 링검출부1: ringer element 2: ring detector

3 : 신호결합부 11 : 정류부3: signal combining unit 11: rectifying unit

12 : 톤발생부 PC : 포토커플러12: tone generating unit PC: photo coupler

SP1 : 스피커SP1: Speaker

본 고안은 전화착신 검출회로에 관한 것으로, 특히 링거소자를 사용하여 착신신호를 검출할 경우 별도의 착신검출회로를 사용하지 않고서 그 링거소자의 정류부의 출력을 이용하여 착신신호검출을 가능토록한 전화착신 검출회로에 관한 것이다.The present invention relates to a telephone incoming call detection circuit, and in particular, when detecting an incoming signal using a ringer element, a telephone call capable of detecting an incoming signal using the output of the rectifier of the ringer element without using a separate incoming call detection circuit. It relates to an incoming detection circuit.

제1도는 종래 전화착신 검출회로 구동도로서 이에 도시된 바와 같이 통화라인 1,2로 인가되는 착신신호를 정류하여 링톤(Ring Tone)을 발생시켜 스피커(SP1)를 구동하는 링거소자(1)와 상기 착신신호에서 링신호를 검출하여 착신검출신호를 출력하는 링검출부(2)로 구성하였다.FIG. 1 is a diagram of driving a conventional incoming call detection circuit. As shown in FIG. 1, a ringer element 1 for driving a speaker SP1 by rectifying an incoming signal applied to call lines 1 and 2 to generate a ring tone The ring detection unit 2 detects the ring signal from the incoming signal and outputs the incoming detection signal.

이와같이 구성된 종래 전화착신 검출회로를 첨부된 제2도의 전화착신 검출회로도로써 작용 및 문제점을 설명하면 다음과 같다.The operation and problems of the conventional incoming call detection circuit configured as described above with the incoming call detection circuit diagram of FIG. 2 will be described as follows.

통화대기시 통화라인 1,2에는 직류전압 48V가 전화국에서 인가되며, 그 통화대기 상태에서는 직류전압(48V)이 콘덴서(C4)에 의해 블로킹되어 저항(R3)쪽으로 전류가 흐르지 못한다. 이때 20Hz의 착신신호가 링거소자(1)로 인가되면 그 착신신호는 정류부(11)에서 정류되고, 평활콘덴서(C3)에서 평활되어 톤발생부(12)의 전원으로 사용된다. 따라서 상기 톤발생부(12)는 링톤을 발생하여 스피커(SP1)를 구동한다.DC line voltage 48V is applied to the call line 1,2 at the telephone line during call waiting. In the state of call waiting, the DC voltage 48V is blocked by the capacitor C4 so that current does not flow to the resistor R3. At this time, when the incoming signal of 20 Hz is applied to the ringer element 1, the incoming signal is rectified by the rectifying unit 11, smoothed in the smoothing capacitor C3 and used as a power source of the tone generating unit 12. Therefore, the tone generator 12 generates a ring tone to drive the speaker SP1.

또한, 상기 착신신호가 링검출부(2)로 인가되므로, 이에따라 상기 링검출부(2)는 그 착신신호에서 링신호를 검출하는데, 만일 그 착신신호에 링신호가 있으면 그 착신신호는 콘덴서(C4) 저항(R3)을 통해 반주기는 포토커플러(PC1)의 발광다이오드(D5)에 인가되고 반주기는 포토커플러(PC2)의 발광다이오드(D6)에 인가되어 그 발광다이오드(D5,D6)을 턴-온시키므로 이에따라 수광트랜지스터(Q1, Q2)가 번갈아 턴-온된다. 따라서 디텍트 출력단자(DET-OUT)에서는 링신호가 있는 동안은 저전위레벨을 출력한다.Further, since the incoming signal is applied to the ring detection unit 2, the ring detection unit 2 detects the ring signal from the incoming signal accordingly. If the incoming signal has a ring signal, the incoming signal is the condenser C4. The half cycle is applied to the light emitting diode D5 of the photocoupler PC1 through the resistor R3 and the half cycle is applied to the light emitting diode D6 of the photocoupler PC2 to turn on the light emitting diodes D5 and D6. Therefore, the light receiving transistors Q1 and Q2 are alternately turned on accordingly. Therefore, the detector output terminal DET-OUT outputs a low potential level while the ring signal is present.

이때 상기 저항(R3)은 20Hz의 착신신호가 고압의 교류전압이기 때문에 상기 발광다이오(D5,D6)에 과전류가 흐르는 것을 방지한다.In this case, the resistor R3 prevents an overcurrent from flowing through the light emitting diodes D5 and D6 because the incoming signal of 20 Hz is a high voltage AC voltage.

반면, 착신신호에 링신호가 없다면 포트커플러(PC1,PC2)가 턴-오프되므로 수광트랜지스터(Q1,Q2)도 턴-오프된다. 따라서 디텍트 출력단자에서는 고전위레벨(5V)이 출력된다. 그러나, 20Hz 링신호의 ±1.7V제로 크로스점 부근에서 두 발광다이오드(D5,D6)가 링신호가 없는 동안 턴-오프되어 고전위레벨(5V)이 출력되는 것을 방지하기 위해 콘덴서(C5)를 달아놓았다.On the other hand, if there is no ring signal in the incoming signal, the port coupler PC1 and PC2 are turned off, so that the light receiving transistors Q1 and Q2 are also turned off. Therefore, a high potential level (5V) is output from the detect output terminal. However, near the ± 1.7V zero cross point of the 20Hz ring signal, the capacitors C5 are turned off to prevent the two LEDs D5 and D6 from turning off while the ring signal is absent so that the high potential level 5V is output. I put it down.

상기에서 설명한 바와같이 종래 전화착신 검출회로는 링거소자를 사용하여 착신신호를 검출할 경우 착신검출회로를 별도로 구성함으로 부품이 많이 들어 생산단가가 높아지며, 또한 통과라인에 순간적인 고전압의 서지가 흐를때 포토커플러의 발광다이오드가 파괴될수 있는 문제점이 있었다.As described above, when the incoming call detection circuit detects the incoming signal by using the ringer element, the incoming call detection circuit is separately configured to increase the production cost due to the large number of parts, and also when the instantaneous high voltage surge flows through the passing line. There was a problem that the light emitting diode of the photocoupler may be destroyed.

본 고안은 이러한 문제점을 해결하기 위하여 링거소자의 정류부출력을 전원으로 사용하여 착신검출을 가능하게한 전화착신 검출회로를 안출한 것으로, 이를 첨부한 도면을 참조하여 상세히 설명하면 다음과 같다.In order to solve this problem, the present invention devised a call reception detection circuit capable of incoming call detection using the rectifier output of a ringer element as a power source, which will be described in detail with reference to the accompanying drawings.

제3도는 본 고안 전화착신 검출회로 구성도로서, 이에 도시한 바와같이 착신신호를 정류하여 링톤을 발생시켜 스피커(SP1)를 구동하는 링거소자(1)와, 상기 링거소자(1)의 정류부(11) 출력을 전원으로 사용하여 착신검출신호를 출력하는 신호결합부(3)로 구성한다.FIG. 3 is a schematic diagram of a telephone incoming call detection circuit of the present invention. As shown in FIG. 3, a ringer element 1 for rectifying an incoming signal to generate a ring tone to drive a speaker SP1, and a rectifier of the ringer element 1 11) It consists of a signal combiner (3) for outputting the incoming call detection signal using the output as a power source.

이와같이 구성된 본 고안의 작용 및 효과를 첨부한 제4도의 전화착신검출 회로도로서 상세히 설명하면 다음과 같다.When described in detail as a call reception detection circuit of Figure 4 attached to the operation and effect of the present invention configured as described above.

통화라인 1,2에 20Hz의 착신신호가 인가되어 저항(R1) 및 콘덴서(C1)를 통해 링거소자(1)에 입력되면, 그 착신신호를 정류부(11)에서 정류하여 출력한다.When an incoming signal of 20 Hz is applied to the call lines 1,2 and input to the ringer element 1 through the resistor R1 and the capacitor C1, the incoming signal is rectified by the rectifier 11 and output.

이때 그 정류된 착신신호를 평활콘덴서(C3)에서 평활하여 톤발생부(12)의 전원으로 사용하며, 만일 그 착신신호에 링신호가 있으면 평활콘덴서(C3)에 결려 있는 전압이 톤발생부(12)로 인가되고, 이에따라 톤발생부(2)는 링톤(Ring Tone)을 발생하여 스피커(SP1)를 구동시키며, 또한 그 평활콘덴서(C3)에 걸려 있던 톤발생부(12) 전원의 일부가 신호결합부(3)로 입력되면, 포토커플러(PC3)의 발광다이오드(D7)가 턴-온되어 수광트랜지스티(D3)를 턴-온시킨다. 따라서 디텍트 출력단자(DET-OUT)에서 저전위레벨의 착신검출신호가 출력된다.At this time, the rectified incoming signal is smoothed in the smoothing capacitor C3 and used as a power source of the tone generating unit 12. If the incoming signal has a ring signal, the voltage generated in the smoothing capacitor C3 is the tone generating unit ( 12), and accordingly, the tone generator 2 generates a ring tone to drive the speaker SP1, and a part of the power supply of the tone generator 12 that has been hung on the smoothing capacitor C3 is applied. When input to the signal combiner 3, the light emitting diode D7 of the photocoupler PC3 is turned on to turn on the light receiving transistor D3. Therefore, the incoming detection signal of the low potential level is output from the detection output terminal DET-OUT.

반면, 상기 착신신호에 링신호가 없다면 상기 평활콘덴서(C3)에 전압이 걸리지 않아 상기 톤발생부(12)는 동작을 하지 않으며, 또한 신호결합부(3)의 포토커플러(PC3)도 턴-오프되므로 디텍트 출력단자(DET-OUT)에서는 고전위레벨(5V)를 출력하게 된다.On the other hand, if there is no ring signal in the incoming signal, the voltage is not applied to the smoothing capacitor C3, so that the tone generator 12 does not operate, and the photo coupler PC3 of the signal coupling unit 3 is also turned on. Since it is off, the high voltage level (5V) is output from the detection output terminal (DET-OUT).

상기에서 설명한 바와같이 본 고안은 착신신호를 검출할 때 별도의 착신검출회로를 사용하지 않고 링거소자의 정류부 출력을 이용하여 착신신호를 검출함으로 구성소자 수를 줄일 수 있어 생산단가를 높일 수 있으며, 통화라인과의 접지분리도 가능하며, 특히 무선 송수신하는 경우 링신호를 특정코드로 보내지 않고 음성주파수대에 링거소자의 출력을 바로 보낼 경우에 유용한 효과가 있다.As described above, the present invention can reduce the number of components by detecting the incoming signal using the rectifier output of the ringer element without using a separate incoming detection circuit when detecting the incoming signal, thereby increasing the production cost. It is also possible to separate the ground from the call line. Especially, when transmitting / receiving radio, it is useful to send the output of the ringer element directly to the voice frequency band without sending the ring signal to a specific code.

Claims (1)

착신신호를 정류부(11)에서 정류하고, 그 정류된 착신신호를 톤발생부(12)의 전원으로 사용하여 링톤을 발생시켜 스피커(SP1)를 구동하는 링거소자(1)와, 상기 정류부(11)의 출력을 전원으로 사용하여 링신호의 유무에 따라 착신검출신호를 출력하는 신호결합부(3)로 구성된 것을 특징으로 하는 전화착신 검출회로.A ringer element 1 which rectifies the incoming signal at the rectifying unit 11 and generates a ring tone by using the rectified incoming signal as a power source of the tone generating unit 12, and drives the speaker SP1, and the rectifying unit 11 And a signal combiner (3) for outputting an incoming call detection signal according to the presence or absence of a ring signal using the output of the power supply as a power source.
KR92003654U 1992-03-07 1992-03-07 Incoming call detecting circuit KR940007124Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR92003654U KR940007124Y1 (en) 1992-03-07 1992-03-07 Incoming call detecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR92003654U KR940007124Y1 (en) 1992-03-07 1992-03-07 Incoming call detecting circuit

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KR930022508U KR930022508U (en) 1993-10-16
KR940007124Y1 true KR940007124Y1 (en) 1994-10-13

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KR92003654U KR940007124Y1 (en) 1992-03-07 1992-03-07 Incoming call detecting circuit

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