KR970009198A - Video signal output circuit - Google Patents

Video signal output circuit Download PDF

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Publication number
KR970009198A
KR970009198A KR1019950020443A KR19950020443A KR970009198A KR 970009198 A KR970009198 A KR 970009198A KR 1019950020443 A KR1019950020443 A KR 1019950020443A KR 19950020443 A KR19950020443 A KR 19950020443A KR 970009198 A KR970009198 A KR 970009198A
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KR
South Korea
Prior art keywords
output
contrast
blank signal
input
blank
Prior art date
Application number
KR1019950020443A
Other languages
Korean (ko)
Other versions
KR0156641B1 (en
Inventor
안종기
Original Assignee
문정환
Lg 반도체 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 문정환, Lg 반도체 주식회사 filed Critical 문정환
Priority to KR1019950020443A priority Critical patent/KR0156641B1/en
Publication of KR970009198A publication Critical patent/KR970009198A/en
Application granted granted Critical
Publication of KR0156641B1 publication Critical patent/KR0156641B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/24—Blanking circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/148—Video amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57—Control of contrast or brightness

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Picture Signal Circuits (AREA)
  • Studio Circuits (AREA)

Abstract

본 발명은 직류전원부에서 콘트라스트단에 인가되는 직류전압의 레인지를 변환하는 콘트라스트제어부에 의해 조절된 감쇄비로 입력된 영상신호를 감쇄시키는 콘트라스트감쇄부의 출력이 되먹임회로에 입력되어 영상신호의 출력파형을 출력하는 영상신호 출력회로에 있어서, 블랭크신호를 발생시키는 블랭크신호발생부와, 블랭크신호발생부의 출력이 입력에 연결되고, 출력은 콘트라스트제어부에 입력되는 콘트라스트단의 출력에 연결되어서, 블랭크신호발생부에서 발생되어 콘트라스트제어부에 인가되는 블랭크신호를 제어하는 블랭크신호제어부를 포함하여 이루어지는 것을 특징으로 한다.According to the present invention, an output of a contrast attenuator for attenuating an input video signal with an attenuation ratio adjusted by a contrast control unit for converting a range of DC voltages applied from the DC power supply unit to a contrast stage is input to a feedback circuit to output an output waveform of the video signal. In a video signal output circuit, a blank signal generator for generating a blank signal, an output of the blank signal generator, are connected to an input, and an output is connected to an output of a contrast terminal input to the contrast controller, so that the blank signal generator And a blank signal controller for controlling the blank signal generated and applied to the contrast controller.

Description

영상신호 출력회로Video signal output circuit

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

제2도는 본 발명에 의한 영상신호 출력회로를 설명하기 위한 도면.2 is a view for explaining a video signal output circuit according to the present invention.

Claims (2)

직류전원부에서 영상신호의 출력이득을 조정하기 위한 콘트라스트단에 인가되는 직류전압의 레인지를 변환하는 콘트라스트제어부에 의해 조절된 감쇄비율로 입력된 영상신호를 감쇄시키는 콘트라스트감쇄부의 출력이 되먹임회로에 입력되어 영상신호의 출력파형을 출력하는 영상신호 출력회로에 있어서, 블랭크신호를 발생시키는 블랭크신호발생부와, 상기 블랭크신호발생부의 출력이 입력에 연결되고, 출력은 상기 콘트라스트제어부에 연결되어서, 상기 블랭크신호발생부에서 발생되어 상기 콘트라스트제어부에 인가되는 블랭크신호를 제어하는 블랭크신호제어부를 포함하여 이루어지는 영상신호 출력회로.The output of the contrast attenuator for attenuating the input video signal at the attenuation ratio adjusted by the contrast controller for converting the range of DC voltage applied to the contrast stage for adjusting the output gain of the video signal in the DC power supply is input to the feedback circuit. In a video signal output circuit for outputting an output waveform of a video signal, a blank signal generator for generating a blank signal, an output of the blank signal generator, are connected to an input, and an output is connected to the contrast controller, so that the blank signal And a blank signal controller configured to control a blank signal generated by the generator and applied to the contrast controller. 제1항에 있어서, 상기 블랭크신호제어부는 상기 블랭크발생부에서 발생된 블랭크신호를 반전시키는 인버터와, 상기 콘트라스트제어부에 입력되는 상기 콘트라스트단의 출력에 컬렉터전극이 연결되고, 이미터전극은 접지되며, 베이스전극에는 상기 블랭크발생부에서 발생되어 상기 인버터에 의해 반전된 블랭크신호가 입력되는 엔피엔트렌지스트로 이루어지는 것을 특징으로 하는 영상신호 출력회로.2. The apparatus of claim 1, wherein the blank signal controller is connected to an inverter for inverting the blank signal generated by the blank generator, a collector electrode is connected to an output of the contrast terminal input to the contrast controller, and the emitter electrode is grounded. And an entropy transistor in which the blank signal generated by the blank generator and inverted by the inverter is input to the base electrode. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950020443A 1995-07-12 1995-07-12 Video signal output circuit KR0156641B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950020443A KR0156641B1 (en) 1995-07-12 1995-07-12 Video signal output circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950020443A KR0156641B1 (en) 1995-07-12 1995-07-12 Video signal output circuit

Publications (2)

Publication Number Publication Date
KR970009198A true KR970009198A (en) 1997-02-24
KR0156641B1 KR0156641B1 (en) 1998-11-16

Family

ID=19420401

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950020443A KR0156641B1 (en) 1995-07-12 1995-07-12 Video signal output circuit

Country Status (1)

Country Link
KR (1) KR0156641B1 (en)

Also Published As

Publication number Publication date
KR0156641B1 (en) 1998-11-16

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