KR970008869A - Ring Signal Detection Circuit and Method Using Comparator - Google Patents

Ring Signal Detection Circuit and Method Using Comparator Download PDF

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Publication number
KR970008869A
KR970008869A KR1019950019787A KR19950019787A KR970008869A KR 970008869 A KR970008869 A KR 970008869A KR 1019950019787 A KR1019950019787 A KR 1019950019787A KR 19950019787 A KR19950019787 A KR 19950019787A KR 970008869 A KR970008869 A KR 970008869A
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KR
South Korea
Prior art keywords
ring
input voltage
signal
hook
detection signal
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Application number
KR1019950019787A
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Korean (ko)
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KR0147335B1 (en
Inventor
김동용
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김광호
삼성전자 주식회사
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Priority to KR1019950019787A priority Critical patent/KR0147335B1/en
Publication of KR970008869A publication Critical patent/KR970008869A/en
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Publication of KR0147335B1 publication Critical patent/KR0147335B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • 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

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Telephonic Communication Services (AREA)

Abstract

1. 청구범위 기재된 발명이 속한 기술분야1. TECHNICAL FIELD OF THE INVENTION

전화라인을 통한 링신호 입력시에 상기 링신호를 검출하는 방법 및 회로.A method and circuit for detecting the ring signal upon input of the ring signal through a telephone line.

2. 발명이 해결하려고 하는 기술적 과제2. The technical problem to be solved by the invention

광결합기의 CRT특성에 따라 포토트랜지스터의 온/오프 레벨변동이 심하여 MPU가 표본을 추출할 시에 에러가 발생할 가능성이 높았다.According to the CRT characteristics of the optical coupler, the on / off level fluctuation of the phototransistor is severe, and the error is likely to occur when the MPU samples.

3. 발명의 해결방법의 요지3. Summary of Solution to Invention

배교기를 이용하여 표본을 추출하므로 에러발생율을 줄일 수 있다.The error rate can be reduced by sampling using an apostle.

4. 발명의 중요한 용도4. Important uses of the invention

링검출기를 사용하는 전화기.A telephone using a ring detector.

Description

비교기를 이용한 링신호 검출회로 및 방법Ring Signal Detection Circuit and Method Using Comparator

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명에 따른 비교기를 이용한 링신호 검출 회로도.2 is a ring signal detection circuit using a comparator according to the present invention.

Claims (6)

훅크 스위치가 오프 훅크될 때에 절체되는 훅크 릴레이와, 상기 훅크 릴레이에 병렬접속되어 링신호를 설정레벨로 조절하는 저항 및 캐패시터로 구성된 링신호 조절수단을 구비한 링신호 검출회로에 있어서, 상기 링신호 조절수단으로부터 설정레벨로 조절된 링신호를 입력받아 상기 링신호를 전파정류된 전압으로 변환하여 입력전압을 생성하는 입력전압 생성수단과, 일정 직류전압을 인가받아 설정된 기준레벨로 분배하여 기준전압을 생성하는 기준전압 생성수단과, 상기 전파정류된 입력전압과 기준전압을 입력받아 구형파 형태의 링검출신호를 출력하는 링검출신호 추출수단으로 구성함을 특징으로 하는 링신호 검출회로.A ring signal detecting circuit comprising a hook relay which is switched when a hook switch is off-hook, and a ring signal adjusting means composed of a resistor and a capacitor connected in parallel with the hook relay to adjust a ring signal to a set level. Input voltage generating means for receiving the ring signal adjusted to the set level from the control means and converting the ring signal into full-wave rectified voltage to generate an input voltage; And a ring detection signal extraction means for receiving the full-wave rectified input voltage and the reference voltage and outputting a ring detection signal in the form of a square wave. 제1항에 있어서, 입력전압 생성수단은, 상기 설정레벨로 조절된 링신호를 상기 링신호 조절수단으로부터 인가받아 전파정류하여 정류된 입력신호를 생성하는 정류부와, 상기 정류부가 입력단에 연결되고 출력단에 상기 링검출 신호추출수단이 연결되며, 상기 훅크 스위치의 온/오프 훅크에 응답하여 상기 정류부와 링검출신호 추출수단을 연결하는 스위칭부로 구성함을 특징으로 하는 링신호 검출회로.According to claim 1, The input voltage generating means, the rectifying unit for receiving the ring signal adjusted to the set level from the ring signal adjusting means and full-wave rectified to generate a rectified input signal, the rectifier is connected to the input terminal and the output terminal The ring detection signal extraction means is connected to the ring signal detection circuit, characterized in that it comprises a switching unit for connecting the rectifier and the ring detection signal extraction means in response to the on / off hook of the hook switch. 제1항에 있어서, 링검출신호 추출수단은, 상기 입력전압 생성수단이 비반전입력단에 상기 기준전압 생성수단이 반전입력단에 연결되며, 상기 입력전압 생성수단으로부터 입력되는 입력전압과 상기 기준전압 생성수단으로부터 입력되는 기준전압을 비교하여 구형파 형태의 링검출신호를 출력하는 비교부로 구성함을 특징으로 하는 링신호 검출회로.According to claim 1, The ring detection signal extracting means, The input voltage generating means is connected to the non-inverting input terminal, the reference voltage generating means is connected to the inverting input terminal, the input voltage and the reference voltage generation input from the input voltage generating means And a comparison section for comparing a reference voltage input from the means and outputting a ring detection signal in the form of a square wave. 훅크 스위치가 오프 훅크될 때에 절체되는 훅크 릴레이와, 상기 훅크 릴레이에 병렬접속되어 링신호를 설정레벨로 조절하는 저항 및 캐패시터로 구성된 링신호 조절수단을 구비한 링신호 검출방법에 있어서, 상기 링신호 조절수단으로부터 설정레벨로 조절된 링신호를 입력받아 상기 링신호를 전파정류된 전압으로 변환하여 입력전압을 생성하는 입력전압 생성과정과, 일정 직류전압을 인가받아 설정된 기준레벨로 분배하여 기준전압을 생성하는 기준전압 생성수단과, 상기 입력전압과 기준접압을 입력받아 구형파 형태의 링검출신호를 출력하는 링검출신호 추출과정으로 이루어짐을 특징으로 하는 링신호 검출방법.A ring signal detecting method comprising: a hook relay which is switched when a hook switch is off-hook; and a ring signal adjusting means composed of a resistor and a capacitor connected in parallel with the hook relay to adjust a ring signal to a set level. An input voltage generation process for generating an input voltage by converting the ring signal into a full-wave rectified voltage by receiving a ring signal adjusted to a set level from a control means, and dividing a reference voltage by applying a predetermined DC voltage to a predetermined reference level. And a ring detection signal extraction process for receiving the input voltage generation means and the input voltage and the reference voltage, and outputting a ring detection signal in the form of a square wave. 제4항에 있어서, 입력전압 생성과정은, 상기 설정레벨로 조절된 링신호를 상기 링신호 조절과정으로부터 인가받아 전파정류하여 입력전압을 생성하는 정류과정과, 상기 정류과정에서 상기 훅크 스위치의 온/오프 훅크에 응답하여 상기 정류과정과 링검출신호 추출과정을 연결하여 상기 입력전압을 전송하는 스위칭과정으로 이루어짐을 특징으로 하는 링신호 검출방법.5. The method of claim 4, wherein the input voltage generating step includes a rectifying step of generating an input voltage by full-wave rectifying the ring signal adjusted to the set level from the ring signal adjusting step, and turning on the hook switch in the rectifying step. And a switching process of transmitting the input voltage by connecting the rectification process and the ring detection signal extraction process in response to an on / off hook. 제4항에 있어서, 링검출신호 추출과정은, 상기 입력전압 생성과정에서 출력되는 입력전압이 비반전입력단에 상기 기준전압 생성과정에서 출력되는 기준전압은 반전입력단에 연결되며, 상기 입력전압과 기준전압을 비교하여 구형파 형태의 링검출신호를 출력하는 비교과정으로 이루어짐을 특징으로 하는 링신호 검출방법.The method of claim 4, wherein in the ring detection signal extraction process, an input voltage output in the input voltage generation process is connected to a non-inverting input terminal, and a reference voltage output in the reference voltage generation process is connected to an inverting input terminal. A ring signal detection method comprising the step of comparing the voltage and outputting a ring detection signal in the form of a square wave. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950019787A 1995-07-06 1995-07-06 Ring signal detection circuit using comparator KR0147335B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950019787A KR0147335B1 (en) 1995-07-06 1995-07-06 Ring signal detection circuit using comparator

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Application Number Priority Date Filing Date Title
KR1019950019787A KR0147335B1 (en) 1995-07-06 1995-07-06 Ring signal detection circuit using comparator

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KR970008869A true KR970008869A (en) 1997-02-24
KR0147335B1 KR0147335B1 (en) 1998-12-01

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KR1019950019787A KR0147335B1 (en) 1995-07-06 1995-07-06 Ring signal detection circuit using comparator

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