KR970019297A - Reception Bell Driving Circuit of Telephone Using Error Tone - Google Patents
Reception Bell Driving Circuit of Telephone Using Error Tone Download PDFInfo
- Publication number
- KR970019297A KR970019297A KR1019950028805A KR19950028805A KR970019297A KR 970019297 A KR970019297 A KR 970019297A KR 1019950028805 A KR1019950028805 A KR 1019950028805A KR 19950028805 A KR19950028805 A KR 19950028805A KR 970019297 A KR970019297 A KR 970019297A
- Authority
- KR
- South Korea
- Prior art keywords
- unit
- signal output
- telephone
- error tone
- hook switch
- Prior art date
Links
Abstract
본 발명은 전화국으로부터 송출된 에러톤 신호가 입력되면 이를 완충하는 버퍼부와, 상기 버퍼부에서 출력되는 신호에 포함된 잡음을 필터링하는 필터부와, 상기 필터부에서 출력되어 파형정형부를 통과한 신호와 훅크 스위치 상태감지부에서 출력되는 신호를 조합하여 송수화기가 방치되어 있는가를 판별하여 송수화기가 방치되어 있으면 이에 해당된 제어 신호를 출력하는 로직부와, 상기 로직부에서 출력되는 제어 신호에 의해 훅크스위치를 수신 가능하게 전환시켜 수신벨 및 자동 응답 회로가 작동되도록 하는 훅크 스위치 위치조절부로 구성되어, 에러톤을 이용하여 송수화기가 방치상태을 판별하여 훅크 스위치를 수신 가능 상태로 자동 절환 시키므로 송수화기가 전화기 본체로부터 이격되어 있어도 상대 가입자의 수신내용을 기록하거나 수신 벨이 구동되게 하여 상대 가입자와 통화를 할 수 있는 에러톤을 이용한 전화기의 수신 벨 구동 회로에 관한 것이다.The present invention provides a buffer unit for buffering an error tone signal transmitted from a telephone station, a filter unit for filtering noise included in a signal output from the buffer unit, and a signal output from the filter unit and passing through a waveform shaping unit. And the signal output from the hook switch state detection unit to determine whether the handset is left unattended. If the handset is left unattended, the logic unit outputs a control signal corresponding thereto, and the hook switch is controlled by the control signal output from the logic unit. It consists of a hook switch position control unit which switches the receiver so that the reception bell and the answering machine can be operated. Record or receive the other subscriber's To be bell is driven relates to a driving circuit receives bell of a telephone with an error tone to the call with the external subscriber.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 선핸 기술에 의한 에러톤을 이용한 전화기의 수신 벨 구동회로를 나타낸 도면.1 is a diagram showing a reception bell driving circuit of a telephone using an error tone by sunhand technology.
제2도는 본 발명에 따라 에러톤을 이용한 전화기의 수신 벨 구동 회로를 나타낸 도면.2 is a diagram illustrating a reception bell driving circuit of a telephone using an error tone according to the present invention.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950028805A KR970019297A (en) | 1995-09-04 | 1995-09-04 | Reception Bell Driving Circuit of Telephone Using Error Tone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950028805A KR970019297A (en) | 1995-09-04 | 1995-09-04 | Reception Bell Driving Circuit of Telephone Using Error Tone |
Publications (1)
Publication Number | Publication Date |
---|---|
KR970019297A true KR970019297A (en) | 1997-04-30 |
Family
ID=66596458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950028805A KR970019297A (en) | 1995-09-04 | 1995-09-04 | Reception Bell Driving Circuit of Telephone Using Error Tone |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR970019297A (en) |
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1995
- 1995-09-04 KR KR1019950028805A patent/KR970019297A/en not_active Application Discontinuation
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WITN | Withdrawal due to no request for examination |