KR960028326A - Automatic brightness level control circuit of the monitor - Google Patents
Automatic brightness level control circuit of the monitor Download PDFInfo
- Publication number
- KR960028326A KR960028326A KR1019940038695A KR19940038695A KR960028326A KR 960028326 A KR960028326 A KR 960028326A KR 1019940038695 A KR1019940038695 A KR 1019940038695A KR 19940038695 A KR19940038695 A KR 19940038695A KR 960028326 A KR960028326 A KR 960028326A
- Authority
- KR
- South Korea
- Prior art keywords
- contrast signal
- output terminal
- monitor
- stabilization circuit
- brightness level
- Prior art date
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- Television Receiver Circuits (AREA)
Abstract
본 발명은 콘트래스트(contrast) 전압에 따라 휘도(brightness)레벨의 전류를 자동으로 조절하여 모니터의 화면이 일정한 밝기로 디스플레이 되도록 한 모니터의 자동 휘도레벨 조절회로에 관한 것이다. 이를 위하여 플라이백 트랜스포머(FBT)로 인가되는 콘트래스트 신호에 의해 화면의 밝기를 조절하는 모니터의 자동 휘도레벨 조절회로에 있어서, 상기 콘트래스트 신호를 평활 및 노이즈를 제거하는 제1안정화회로(1)와, 상기 제1안정화회로(1)의 출력단에 연결되어 콘트래스트 신호를 증폭없이 출력시키는 버퍼부(2)와, 상기 버퍼부(2)의 출력단에 접속되어 콘트래스트 신호를 정류 및 평활시키는 제2안정화회로(3), 상기 제2안정회로(3)의 출력단에 접속되어 콘트래스트 신호를 합성하고 화면의 밝기를 일정하게 세팅시키기 위한 기준전압설정부(4)와, 상기 기준전압설정부(4)의 출력단에 연결되어 기준전압과 콘트래스트신호에 포함된 노이즈를 제거하여 상기 플라이백 트랜스포머(FBT)에 인가하는 제3안정화회로(5)를 포함하여서 된 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic brightness level adjustment circuit of a monitor in which a current of a brightness level is automatically adjusted according to contrast voltage so that the screen of the monitor is displayed at a constant brightness. To this end, in the automatic brightness level control circuit of the monitor for adjusting the brightness of the screen by the contrast signal applied to the flyback transformer (FBT), the first stabilization circuit for smoothing the contrast signal and removing noise ( 1), a buffer unit 2 connected to an output terminal of the first stabilization circuit 1 for outputting a contrast signal without amplification, and a buffer unit 2 connected to an output terminal of the buffer unit 2 to rectify the contrast signal. And a reference voltage setting unit (4) connected to an output of the second stabilization circuit (3) for smoothing, and an output terminal of the second stabilization circuit (3) for synthesizing the contrast signals and setting the brightness of the screen constantly; And a third stabilization circuit 5 connected to an output terminal of the reference voltage setting unit 4 to remove noise included in the reference voltage and the contrast signal and apply the noise to the flyback transformer FBT.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제2도는 본 발명에 따른 모니터의 자동 휘도레벨 조절회로도.2 is an automatic luminance level control circuit diagram of a monitor according to the present invention.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940038695A KR960028326A (en) | 1994-12-29 | 1994-12-29 | Automatic brightness level control circuit of the monitor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940038695A KR960028326A (en) | 1994-12-29 | 1994-12-29 | Automatic brightness level control circuit of the monitor |
Publications (1)
Publication Number | Publication Date |
---|---|
KR960028326A true KR960028326A (en) | 1996-07-22 |
Family
ID=66770044
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019940038695A KR960028326A (en) | 1994-12-29 | 1994-12-29 | Automatic brightness level control circuit of the monitor |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR960028326A (en) |
-
1994
- 1994-12-29 KR KR1019940038695A patent/KR960028326A/en not_active Application Discontinuation
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Legal Events
Date | Code | Title | Description |
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WITN | Withdrawal due to no request for examination |