KR900016979A - Answering cassette tape recorder realizes howling prevention - Google Patents

Answering cassette tape recorder realizes howling prevention Download PDF

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Publication number
KR900016979A
KR900016979A KR1019890005560A KR890005560A KR900016979A KR 900016979 A KR900016979 A KR 900016979A KR 1019890005560 A KR1019890005560 A KR 1019890005560A KR 890005560 A KR890005560 A KR 890005560A KR 900016979 A KR900016979 A KR 900016979A
Authority
KR
South Korea
Prior art keywords
tape recorder
cassette tape
answering
howling prevention
output
Prior art date
Application number
KR1019890005560A
Other languages
Korean (ko)
Inventor
이종배
Original Assignee
이헌조
주식회사 금성사
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 이헌조, 주식회사 금성사 filed Critical 이헌조
Priority to KR1019890005560A priority Critical patent/KR900016979A/en
Publication of KR900016979A publication Critical patent/KR900016979A/en

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Abstract

내용 없음No content

Description

하울링 방지를 실현시킨 자동응답 카세트 테이프 레코더Answering cassette tape recorder realizes howling prevention

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

제1도 (A), (B)는 본 발명의 회로도, 제1도 (C), (D)는 본 발명의 회로도에 대한 파형도,1 (A), (B) is a circuit diagram of the present invention, 1 (C), (D) is a waveform diagram for the circuit diagram of the present invention,

제2도는 본 발명의 회로가 삽입된 자동응답카세트테이프 레코더.2 is an answering machine cassette tape recorder incorporating the circuit of the present invention.

Claims (1)

자동응답 카세트테이프 레코더에 있어서, 발진기와, 이 출력에 연이어 연결된 슈미트 트리거(21), (22)와, 이의 각각의 출력에 연결되는 트랜지스터 및 저항으로 구성된 전달회로(23)와, 그 출력과 마이컴의 포트(1)로부터의 신호를 입력으로 하는AND게이트(24), (25)와, 이에 연이어 각각 연결되고 상기 마이컴의 포트(2), (3)로부터의 신호를 각각 입력으로 하는OR게이트(26,27)를 포함하여 구성 된 펄스 발생부(30)의 출력(A"),(B")는 각각 제1전자스위치(31)와 게2전자스위치 (32)에 연결된 것을 특징으로 하는 하울링 방지를 실현시킨 자동응답 카세트 테이프레코더.An autoresponder cassette tape recorder comprising: an oscillator, a Schmitt trigger (21) and (22) connected in series with this output, a transfer circuit (23) consisting of transistors and resistors connected to respective outputs thereof, the output and the microcomputer AND gates 24 and 25 for inputting signals from port 1 of < RTI ID = 0.0 >, < / RTI > and successive OR gates for inputting signals from ports 2 and 3 of the microcomputer, respectively. Howling, characterized in that the output (A "), (B") of the pulse generator 30, including the 26, 27 is connected to the first electronic switch 31 and the second electronic switch 32, respectively Answering cassette tape recorder which realized prevention. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019890005560A 1989-04-27 1989-04-27 Answering cassette tape recorder realizes howling prevention KR900016979A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019890005560A KR900016979A (en) 1989-04-27 1989-04-27 Answering cassette tape recorder realizes howling prevention

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019890005560A KR900016979A (en) 1989-04-27 1989-04-27 Answering cassette tape recorder realizes howling prevention

Publications (1)

Publication Number Publication Date
KR900016979A true KR900016979A (en) 1990-11-15

Family

ID=67776678

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890005560A KR900016979A (en) 1989-04-27 1989-04-27 Answering cassette tape recorder realizes howling prevention

Country Status (1)

Country Link
KR (1) KR900016979A (en)

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