KR910011048A - Automatic MUTE Circuit for CATV Converters - Google Patents

Automatic MUTE Circuit for CATV Converters Download PDF

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Publication number
KR910011048A
KR910011048A KR1019890017413A KR890017413A KR910011048A KR 910011048 A KR910011048 A KR 910011048A KR 1019890017413 A KR1019890017413 A KR 1019890017413A KR 890017413 A KR890017413 A KR 890017413A KR 910011048 A KR910011048 A KR 910011048A
Authority
KR
South Korea
Prior art keywords
signal
horizontal
unit
output
control signal
Prior art date
Application number
KR1019890017413A
Other languages
Korean (ko)
Other versions
KR0135881B1 (en
Inventor
안종국
Original Assignee
서주인
삼성전기 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 서주인, 삼성전기 주식회사 filed Critical 서주인
Priority to KR1019890017413A priority Critical patent/KR0135881B1/en
Publication of KR910011048A publication Critical patent/KR910011048A/en
Application granted granted Critical
Publication of KR0135881B1 publication Critical patent/KR0135881B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

내용 없음No content

Description

CATV콘버터용 자동 뮤트(MUTE)회로Automatic MUTE Circuit for CATV Converters

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

제1도는 본 발명에 의한 자동 뮤트 회로를 도시한 실시예시도.1 is an exemplary view showing an automatic mute circuit according to the present invention.

Claims (1)

CATV콘버터 내부에서 복조된 영상신호에서 수평 동기 신호를 분리하는 수평동기 신호분리부; 소정의 수평발진 주파수를 발생시키는 수평발진부; 상기 수평동기 신호 분리부와 수평발진부의 전송신호 레벨에 따라 출력하도록 되어 있는 조합; 상기 조합부에서 전송되는 신호와 기준전압의 차에 따라 출력되는 비교부; 내장된 프로그램을 수행하여 이에 해당하는 음량 제어 신호를 출력하는 마이크로 프로세서; 상기 비교부의 출력신호로 트랜지스터를 도통시킴으로써 마이크로 프로세서에서 출력된 음량제어 신호를 스위칭하는 제어신호 스위칭부; 상기 제어신호 스위칭부의 출력신호에 따라서 음량을 조정하는 음량조정부로 구비됨을 특징으로 하는 CATV콘버터용 자동 뮤트(MUKE)회로.A horizontal synchronous signal separator for separating the horizontal synchronous signal from the demodulated video signal inside the CATV converter; A horizontal oscillator for generating a predetermined horizontal oscillation frequency; A combination configured to output according to transmission signal levels of the horizontal synchronization signal separator and the horizontal oscillator; A comparison unit output according to a difference between a signal transmitted from the combination unit and a reference voltage; A microprocessor which executes an embedded program and outputs a corresponding volume control signal; A control signal switching unit for switching the volume control signal output from the microprocessor by conducting a transistor with an output signal of the comparing unit; Auto mute circuit for a CATV converter, characterized in that the volume control unit for adjusting the volume in accordance with the output signal of the control signal switching unit. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019890017413A 1989-11-29 1989-11-29 Automatic mute circuitry of catv converter KR0135881B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019890017413A KR0135881B1 (en) 1989-11-29 1989-11-29 Automatic mute circuitry of catv converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019890017413A KR0135881B1 (en) 1989-11-29 1989-11-29 Automatic mute circuitry of catv converter

Publications (2)

Publication Number Publication Date
KR910011048A true KR910011048A (en) 1991-06-29
KR0135881B1 KR0135881B1 (en) 1998-04-27

Family

ID=19292208

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890017413A KR0135881B1 (en) 1989-11-29 1989-11-29 Automatic mute circuitry of catv converter

Country Status (1)

Country Link
KR (1) KR0135881B1 (en)

Also Published As

Publication number Publication date
KR0135881B1 (en) 1998-04-27

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