KR910015150A - Calling tone detection circuit - Google Patents

Calling tone detection circuit Download PDF

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Publication number
KR910015150A
KR910015150A KR1019900001090A KR900001090A KR910015150A KR 910015150 A KR910015150 A KR 910015150A KR 1019900001090 A KR1019900001090 A KR 1019900001090A KR 900001090 A KR900001090 A KR 900001090A KR 910015150 A KR910015150 A KR 910015150A
Authority
KR
South Korea
Prior art keywords
detection circuit
calling tone
cpu
tone detection
output
Prior art date
Application number
KR1019900001090A
Other languages
Korean (ko)
Inventor
최원근
Original Assignee
이만용
금성반도체 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이만용, 금성반도체 주식회사 filed Critical 이만용
Priority to KR1019900001090A priority Critical patent/KR910015150A/en
Publication of KR910015150A publication Critical patent/KR910015150A/en

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Abstract

내용 없음No content

Description

콜링 톤 검출회로Calling tone detection circuit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명의 블록도, 제2도는 본 발명의 상세 회로도, 제3도는 본 발명이 플로우 챠트.1 is a block diagram of the present invention, FIG. 2 is a detailed circuit diagram of the present invention, and FIG. 3 is a flowchart of the present invention.

Claims (1)

전화라인으로부터 1300HZ 싱글톤을 감지하여 이를 CPU에 알리는 톤 디코더(20)와, 상기 디코더의 출력을 받아 원하는 시간이상 콜링 톤이 들어왔는지를 확인하여 사람이 받게할 것인가 PETEX가 데이타 트랜지스터 상태로 갈 것인가를 결정하는 CPU(10)와, 이 CPU에서 결정되는 출력을 받아 1500HZ톤을 출력시키는 타이머(30)와, 이 타이머의 출력을 증폭시켜 스피커(SP)로 출력시키는 통상의 OP앰프(40)로 구성됨을 특징으로 하는 콜링 톤 검출회로.The tone decoder 20 that detects the 1300HZ singleton from the telephone line and informs the CPU, and whether the calling tone has been received for more than the desired time by receiving the output of the decoder, will the person receive it, or will the PETEX go into the data transistor state? A CPU 10 for determining the power, a timer 30 for receiving the output determined by the CPU and outputting 1500 HZ tones, and a normal OP amplifier 40 for amplifying the output of the timer and outputting the same to the speaker SP. Calling tone detection circuit, characterized in that configured. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019900001090A 1990-01-31 1990-01-31 Calling tone detection circuit KR910015150A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019900001090A KR910015150A (en) 1990-01-31 1990-01-31 Calling tone detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019900001090A KR910015150A (en) 1990-01-31 1990-01-31 Calling tone detection circuit

Publications (1)

Publication Number Publication Date
KR910015150A true KR910015150A (en) 1991-08-31

Family

ID=67468433

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900001090A KR910015150A (en) 1990-01-31 1990-01-31 Calling tone detection circuit

Country Status (1)

Country Link
KR (1) KR910015150A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101157770B1 (en) * 2010-12-31 2012-06-25 (주)엠에스하모니 Vibrator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101157770B1 (en) * 2010-12-31 2012-06-25 (주)엠에스하모니 Vibrator

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