KR930001603A - Noise Reduction Circuit of Car Audio System - Google Patents

Noise Reduction Circuit of Car Audio System Download PDF

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Publication number
KR930001603A
KR930001603A KR1019910009477A KR910009477A KR930001603A KR 930001603 A KR930001603 A KR 930001603A KR 1019910009477 A KR1019910009477 A KR 1019910009477A KR 910009477 A KR910009477 A KR 910009477A KR 930001603 A KR930001603 A KR 930001603A
Authority
KR
South Korea
Prior art keywords
antenna
melody
output
car audio
audio system
Prior art date
Application number
KR1019910009477A
Other languages
Korean (ko)
Inventor
권오상
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 KR1019910009477A priority Critical patent/KR930001603A/en
Publication of KR930001603A publication Critical patent/KR930001603A/en

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  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

내용 없음No content

Description

카 오디오 시스템의 잡음 제거회로Noise Reduction Circuit of Car Audio System

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

제2도는 본 발명의 카 오디오 시스템의 잡음 제거회로에 대한 블록도.2 is a block diagram of a noise canceling circuit of a car audio system of the present invention.

제3도는 제2도의 상세 회로도.3 is a detailed circuit diagram of FIG.

Claims (1)

안테나 로딩용 모터(M)의 축에 장착된 원반이 안테나(ANT)의 로딩에 의해 회전할때 안테나(ANT)의 로딩상태를 전기적인 신호로 출력하는 안테나 로딩 감지부(10)와, 안테나(ANT)의 로딩시 상기 안테나 로딩감지부(10)로 부터 출력되어 제1증폭부(11)에서 증폭되는 펄스전압을 일정 레벨의 전압으로 변환시키는 AC/DC변환기(12)와, 상기 AC/DC변환기(12)의 출력을 변환하여 카 오디오 제어부(18)를 통해 카 오디오 시스템(4)의 구동을 제어함과 아울러 멜로디회로 제어부(14)로 구동시켜 전원전압을 출력하게 하는 로직레벨 변환기(13)와, 안테나(ANT)의 로딩시 상기 멜로디회로 제어부(14)로 부터 구동전원이 인가될 때 멜로디를 제2증폭부(16)를 통해 출력하여 스피커(SP1)를 구동시키는 멜로디 발진부(15)와, 안테나(ANT)의 완전히 로딩되어 상기 멜로디 발진부(15)의 출력이 멈추는 순간에 일시적으로 스피커(SP1)출력을 뮤트시켜서 팝 노이즈를 제거하는 뮤트 제어부(17)를 포함하여 구성한 것을 특징으로 하는 카 오디오 시스템의 잡음 제거회로.An antenna loading detection unit 10 for outputting the loading state of the antenna ANT as an electrical signal when the disk mounted on the shaft of the antenna loading motor M rotates by the loading of the antenna ANT, and the antenna ( An AC / DC converter 12 for converting a pulse voltage output from the antenna loading detection unit 10 and amplified by the first amplifier 11 into a voltage of a predetermined level when the ANT is loaded, and the AC / DC The logic level converter 13 converts the output of the converter 12 to control the driving of the car audio system 4 through the car audio control unit 18 and to drive the melody circuit control unit 14 to output the power voltage. And a melody oscillator 15 for outputting a melody through the second amplifier 16 to drive the speaker SP1 when driving power is applied from the melody circuit controller 14 when the antenna ANT is loaded. The output of the melody oscillation unit 15 stops when the antenna ANT is completely loaded. Is the moment temporarily speakers (SP1) to remove noise of a car audio system, characterized in that configured to include a mute control unit 17 to mute the output by removing the pop noise circuit. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910009477A 1991-06-08 1991-06-08 Noise Reduction Circuit of Car Audio System KR930001603A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910009477A KR930001603A (en) 1991-06-08 1991-06-08 Noise Reduction Circuit of Car Audio System

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910009477A KR930001603A (en) 1991-06-08 1991-06-08 Noise Reduction Circuit of Car Audio System

Publications (1)

Publication Number Publication Date
KR930001603A true KR930001603A (en) 1993-01-16

Family

ID=67440673

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910009477A KR930001603A (en) 1991-06-08 1991-06-08 Noise Reduction Circuit of Car Audio System

Country Status (1)

Country Link
KR (1) KR930001603A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100426275B1 (en) * 2001-12-10 2004-04-08 한국과학기술연구원 Cascade Impactor for Measuring Droplet Size Distribution

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100426275B1 (en) * 2001-12-10 2004-04-08 한국과학기술연구원 Cascade Impactor for Measuring Droplet Size Distribution

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