KR100446530B1 - Circuit for controlling a ringing sound level in a telephone terminal, specially related to controlling a level of a ringing sound at certain level in a telephone with a speaker phone circuit or without the speaker phone circuit - Google Patents

Circuit for controlling a ringing sound level in a telephone terminal, specially related to controlling a level of a ringing sound at certain level in a telephone with a speaker phone circuit or without the speaker phone circuit Download PDF

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KR100446530B1
KR100446530B1 KR1019970043789A KR19970043789A KR100446530B1 KR 100446530 B1 KR100446530 B1 KR 100446530B1 KR 1019970043789 A KR1019970043789 A KR 1019970043789A KR 19970043789 A KR19970043789 A KR 19970043789A KR 100446530 B1 KR100446530 B1 KR 100446530B1
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circuit
level
volume
telephone
speaker phone
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KR1019970043789A
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Korean (ko)
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KR19990020329A (en
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정희광
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삼성전자주식회사
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current 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
    • H04M19/042—Current 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 with variable loudness of the ringing tone, e.g. variable envelope or amplitude of ring signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Function (AREA)

Abstract

PURPOSE: A circuit for controlling a ringing sound level in a telephone terminal is provided to control a ringing sound level synchronized through a speaker phone circuit of a telephone terminal having a speaker phone when a ringing sound is produced from a telephone terminal which does not have a speaker phone, thereby increasing product reliability. CONSTITUTION: A variable volume circuit(10) controls volume of an inputted ring signal sound according to a volume control value selected by a user, and outputs the controlled volume. Resistances(R2-R4) and a capacitor(C1) apply the volume as a reference power of the ringing signal sound in connection with an input end of the variable volume circuit(10). An amplifying circuit(12) amplifies the controlled ringing signal sound at certain level, and outputs the amplified signal. Resistances(R6,R7) and a capacitor(C2) control a level of the ringing sound as much as the ringing sound level which is synchronized through a speaker phone circuit.

Description

전화단말기에서 링음 레벨조절회로Ring tone level control circuit in telephone terminal

본 발명은 전화단말기의 링음레벨 조절회로에 관한 것으로, 특히 키폰전화기에서 스피커폰회로가 구비된 전화기나 구비되지 않은 전화기간에 링음레벨 및 스피커의 각종 레벨을 일정하게 조절하는 링음레벨 조절회로에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ring tone level control circuit of a telephone terminal, and more particularly, to a ring tone level control circuit that constantly adjusts ring tone levels and various levels of a speaker during a telephone call with a speakerphone circuit or a telephone call period in a key phone telephone. .

일반적으로 전화단말기에서는 외부로부터 전화가 걸려오는 것에 응답하여 링을 발생시킴으로써 전화기의 사용자에게 전화호출이 있음을 알려왔다. 이때 링음량은 전화기에 설치된 음량조절용 볼륨레버을 이용하여 사용자가 링음량을 조절할 수 있도록 되어 있었다.In general, a telephone terminal has been informed that a telephone call is made to a user of a telephone by generating a ring in response to an incoming call. At this time, the ring volume was to allow the user to adjust the ring volume using the volume control volume lever installed in the phone.

도 1은 종래의 스피커폰을 구비하지 않은 전화단말기의 링음레벨 조절회로도이다. CPU로부터 발생되어 출력된 링음신호는 저항 R1을 통해 볼륨가변회로 10으로 인가된다. 이때 저항 R2-R4 및 캐패시터 C1은 링신호음의 기준전압을 인가하기 위해 사용된다. 상기 가변볼륨회로 10은 상기 입력된 링신호음의 음량을 사용자가 선택한 음량조절값에 따라 크게하거나 작게조절하여 증폭회로 12로 출력한다. 상기 증폭회로 12는 상기 음량조절된 링신호음을 소정레벨로 증폭하여 스피커 14로 출력하여 링음이 울리도록 한다.1 is a ring tone level control circuit diagram of a telephone terminal having no conventional speakerphone. The ring tone signal generated and output from the CPU is applied to the volume variable circuit 10 through the resistor R1. At this time, the resistors R2-R4 and the capacitor C1 are used to apply the reference voltage of the ring tone. The variable volume circuit 10 adjusts the volume of the input ring signal sound to amplification circuit 12 by increasing or decreasing it according to a volume control value selected by the user. The amplifying circuit 12 amplifies the volume-controlled ring signal sound to a predetermined level and outputs the ring sound to the speaker 14.

이와같이 링음이 울릴 때 도 2와 같이 스피커폰회로 16가 구비된 전화단말기에서는 상기 링신호음이 스피커폰회로 16에 인가되어 링음의 레벨이 떨어진다. 또한 각종 신호는 저항 R5를 통해 볼륨 가변회로 10으로 인가되어 링음신호 동일하게 처리된다. 그런데 각종 신호가 R5를 통해 볼륨가변회로 10으로 인가될 때 스피커폰회로 16을 구비한 전화단말기는 스피커폰회로 16을 통해 볼륨가변회로 10으로 인가되므로 역시 레벨이 감소된다.As such, when the ring tone sounds, the ring signal sound is applied to the speakerphone circuit 16 so that the ring tone level is lowered in the telephone terminal provided with the speakerphone circuit 16 as shown in FIG. 2. In addition, various signals are applied to the volume variable circuit 10 through the resistor R5 and processed in the same way as the ring tone signal. However, when various signals are applied to the volume variable circuit 10 through R5, the telephone terminal having the speaker phone circuit 16 is applied to the volume variable circuit 10 through the speaker phone circuit 16, so that the level is also reduced.

이와 같이 패밀리(Family)화된 모델중에서 스피커폰회로가 구비된 전화기나 스피커폰회로가 구비되지 않은 전화기간에 링레벨 및 스피커부의 각종 레벨이 균일하지 않는다. 이는 링음신호가 스피커폰회로쪽으로 유기되어 링신호 및 각종 신호들이 스피커폰회로가 없는 전화기와 차이가 발생하는 문제점이 있었다.In such a family model, the ring level and various levels of the speaker unit are not uniform in the telephone period in which the speakerphone circuit is provided or the telephone period in which the speakerphone circuit is not provided. This is because the ring tone signal is induced to the speakerphone circuit, there is a problem that the ring signal and various signals are different from the telephone without the speakerphone circuit.

따라서 본 발명의 목적은 패밀리화 되는 동일모델의 전화단말기에서 스피커폰회로가 구비되지 않은 전화단말기나 스피커폰회로가 구비되어 있는 전화단말기에 의 링음레벨 및 각종 신호의 레벨을 일정하게 조절하는 링음레벨 조절회로를 제공함에 있다.Accordingly, an object of the present invention is to provide a ring tone level control circuit that constantly adjusts the ring tone level and various signal levels of a telephone terminal equipped with a speakerphone circuit or a speaker terminal having no speakerphone circuit in a telephone terminal of the same model to be familyed. In providing.

상기 목적을 달성하기 위한 본 발명은, 패밀리(Family)화된 키폰전화기의 모델중에서 스피커폰회로가 구비되지 않은 키폰전화기의 링음레벨 조절회로에 있어서, 입력된 링신호음의 음량을 사용자가 선택한 음량조절값에 따라 크게하거나 작게조절하여 출력하는 가변볼륨회로와, 상기 가변볼륨회로의 입력단에 연결되어 링신호음의 기준전원으로 인가하기 위한 저항 R2-R4 및 캐패시터 C1와, 상기 음량조절된 링신호음을 소정레벨로 증폭하여 스피커 14로 출력하는증폭회로와, 상기 입력된 링음신호를 스피커폰이 구비되어 있는 전화단말기에서 상기 스피커폰회로를 통해 링음레벨이 싱크되는 만큼 링음레벨을 조절하는 저항 R6-R7 및 캐패시터 C2로 구성함을 특징으로 한다.In order to achieve the above object, the present invention provides a ring tone level control circuit of a key phone telephone without a speaker phone circuit among the family of key phone telephones, wherein the volume of the input ring signal sound is set to a volume control value selected by a user. A variable volume circuit for controlling the output of the variable volume circuit to be increased or decreased, a resistor R2-R4 and a capacitor C1 connected to an input terminal of the variable volume circuit to be applied as a reference power source for a ring signal sound, and the volume control ring signal sound to a predetermined level. Amplification circuit for amplifying and outputting to the speaker 14, and a resistor R6-R7 and a capacitor C2 for adjusting the ring sound level as much as the ring sound level is synchronized through the speaker phone circuit in a telephone terminal equipped with a speaker phone for the input ring sound signal. It is characterized by.

도 1은 종래의 스피커폰을 구비하지 않은 전화단말기의 링음레벨 조절회로도1 is a ring tone level control circuit diagram of a telephone terminal without a conventional speakerphone

도 2는 종래의 스피커폰을 구비한 전화단말기의 링음레벨 조절회로도Figure 2 is a ring tone level control circuit diagram of a telephone terminal having a conventional speakerphone

도 3은 본 발명의 실시예에 따른 링음레벨 조절회로의 구성도3 is a block diagram of a ring sound level control circuit according to an embodiment of the present invention

이하 첨부된 도면을 참조하여 본 발명의 바람직한 실시예의 동작을 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail the operation of the preferred embodiment of the present invention.

도 3은 본 발명의 실시예에 따른 링음레벨 조절회로의 구성도이다.3 is a block diagram of a ring tone level control circuit according to an embodiment of the present invention.

CPU로부터 발생되어 출력된 링음신호는 저항 R1을 통해 볼륨가변회로 10으로 인가된다. 이때 저항 R2-R4 및 캐패시터 C1은 링신호음의 기준전원으로 인가하기 위해 사용된다. 상기 가변볼륨회로 10은 상기 입력된 링신호음의 음량을 사용자가 선택한 음량조절값에 따라 크게하거나 작게조절하여 증폭회로 12로 출력한다. 상기 증폭회로 12는 상기 음량조절된 링신호음을 소정레벨로 증폭하여 스피커 14로 출력하여 링음이 울리도록 한다. 이와같이 링음이 울릴 때 스피커폰회로가 구비되지 않은 전화단말기에서는 스피커폰이 구비되어 있는 링음레벨과 동일하게 하기 위해 저항 R1과 접지사이에 저항 R6, 캐패시터 C2, 저항 R7을 직렬 접속하였다. 상기 저항 R6 및 R7은 스피커폰회로를 통해 링음레벨이 싱크되는 만큼 링을레벨을 조절하여 스피커폰회로를 구비한 전화단말기의 링음레벨과 동일한 레벨을 갖도록 조절한다. 이때 캐패시터 C2는 링음소스로부터 인가 되는 기준전원의 바이패스용 캐패시터이다. 또한 각종 신호는 저항 R5를 통해 볼륨 가변회로 10으로 인가되어 링음신호 동일하게 처리된다. 그런데 각종 신호가 R5를 통해 볼륨가변회로 10으로 인가될 때 상기 저항 R6 및 R7은 스피커폰회로를 통해 각종신호의 레벨이 싱크되는 만큼 각종신호의 레벨을 조절하여 스피커폰회로를 구비한 전화단말기의 링음레벨과 동일한 레벨을 갖도록 조절한다.The ring tone signal generated and output from the CPU is applied to the volume variable circuit 10 through the resistor R1. At this time, the resistors R2-R4 and the capacitor C1 are used to apply the reference power of the ring tone. The variable volume circuit 10 adjusts the volume of the input ring signal sound to amplification circuit 12 by increasing or decreasing it according to a volume control value selected by the user. The amplifying circuit 12 amplifies the volume-controlled ring signal sound to a predetermined level and outputs the ring sound to the speaker 14. In this manner, when a ringing tone is heard, a telephone terminal having no speakerphone circuit is connected in series with a resistor R6, a capacitor C2, and a resistor R7 between the resistor R1 and the ground in order to be equal to the ringing level provided with the speakerphone. The resistors R6 and R7 adjust the level so that the ring tone level is synchronized through the speakerphone circuit so as to have the same level as the ringtone level of the telephone terminal having the speakerphone circuit. At this time, the capacitor C2 is a bypass capacitor of the reference power applied from the ring sound source. In addition, various signals are applied to the volume variable circuit 10 through the resistor R5 and processed in the same way as the ring tone signal. However, when various signals are applied to the volume variable circuit 10 through R5, the resistors R6 and R7 adjust the level of the various signals as the level of the various signals are synchronized through the speakerphone circuit so that the ring tone level of the telephone terminal having the speakerphone circuit is adjusted. Adjust it to have the same level as.

상술한 바와같이 본 발명은, 패밀화된 키폰전화기에서 스피커폰을 구비하지 않는 전화단말기에서 링음이 울릴 경우 스피커폰이 구비된 전화단말기에서 스피커폰회로를 통해 싱크되는 링음레벨만큼 링음레벨을 조절하여 제품의 신뢰도 및 동일특성의 여러종류의 전화기를 가질수 있는 이점이 있다.As described above, in the present invention, when the ringing tone is heard in the phone terminal which is not equipped with the speakerphone in a family-like keyphone telephone, the reliability of the product is controlled by adjusting the ringing sound level as much as the ringing sound level that is synchronized through the speakerphone circuit in the telephone terminal equipped with the speakerphone. And there is an advantage that can have several kinds of telephones of the same characteristics.

Claims (1)

패밀리(Family)화된 키폰전화기의 모델중에서 스피커폰회로가 구비되지 않은 키폰전화기의 링음레벨 조절회로에 있어서,In the ring tone level control circuit of a key phone telephone which is not provided with a speaker phone circuit among the model of a family keyed telephone telephone, 입력된 링신호음의 음량을 사용자가 선택한 음량조절값에 따라 크게하거나 작게조절하여 출력하는 가변볼륨회로와,A variable volume circuit for controlling the volume of the input ring signal sound to be increased or decreased according to the volume control value selected by the user; 상기 가변볼륨회로의 입력단에 연결되어 링신호음의 기준전원으로 인가하기 위한 저항 R2-R4 및 캐패시터 C1와,A resistor R2-R4 and a capacitor C1 connected to an input terminal of the variable volume circuit and applied as a reference power source for a ring tone; 상기 음량조절된 링신호음을 소정레벨로 증폭하여 스피커 14로 출력하는증폭회로와,An amplifying circuit for amplifying the volume-controlled ring signal sound to a predetermined level and outputting the same to the speaker 14; 상기 입력된 링음신호를 스피커폰이 구비되어 있는 전화단말기에서 상기 스피커폰회로를 통해 링음레벨이 싱크되는 만큼 링음레벨을 조절하는 저항 R6-R7 및 캐패시터 C2로 구성함을 특징으로 하는 전화단말기에서 링음레벨 조절회로.The input ring tone signal is configured by a resistor R6-R7 and a capacitor C2 for adjusting the ring tone level as the ring tone level is synchronized through the speakerphone circuit in a telephone terminal equipped with a speakerphone. Circuit.
KR1019970043789A 1997-08-30 1997-08-30 Circuit for controlling a ringing sound level in a telephone terminal, specially related to controlling a level of a ringing sound at certain level in a telephone with a speaker phone circuit or without the speaker phone circuit KR100446530B1 (en)

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KR1019970043789A KR100446530B1 (en) 1997-08-30 1997-08-30 Circuit for controlling a ringing sound level in a telephone terminal, specially related to controlling a level of a ringing sound at certain level in a telephone with a speaker phone circuit or without the speaker phone circuit

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KR1019970043789A KR100446530B1 (en) 1997-08-30 1997-08-30 Circuit for controlling a ringing sound level in a telephone terminal, specially related to controlling a level of a ringing sound at certain level in a telephone with a speaker phone circuit or without the speaker phone circuit

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KR19990020329A KR19990020329A (en) 1999-03-25
KR100446530B1 true KR100446530B1 (en) 2004-10-14

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02153656A (en) * 1988-12-05 1990-06-13 Mitsubishi Electric Corp Telephone set ringing tone circuit
KR940009775A (en) * 1992-10-30 1994-05-24 미야하라 아끼라 Roll Paper Feeder
KR960043685A (en) * 1995-05-25 1996-12-23 김광호 Volume control device for key-phone
KR970009095A (en) * 1995-07-29 1997-02-24 김광호 Ring generating circuit of telephone

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02153656A (en) * 1988-12-05 1990-06-13 Mitsubishi Electric Corp Telephone set ringing tone circuit
KR940009775A (en) * 1992-10-30 1994-05-24 미야하라 아끼라 Roll Paper Feeder
KR960043685A (en) * 1995-05-25 1996-12-23 김광호 Volume control device for key-phone
KR970009095A (en) * 1995-07-29 1997-02-24 김광호 Ring generating circuit of telephone

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