KR960028325A - Auto Brightness Control Circuit - Google Patents
Auto Brightness Control Circuit Download PDFInfo
- Publication number
- KR960028325A KR960028325A KR1019940038688A KR19940038688A KR960028325A KR 960028325 A KR960028325 A KR 960028325A KR 1019940038688 A KR1019940038688 A KR 1019940038688A KR 19940038688 A KR19940038688 A KR 19940038688A KR 960028325 A KR960028325 A KR 960028325A
- Authority
- KR
- South Korea
- Prior art keywords
- output unit
- horizontal
- output
- level
- flyback transformer
- Prior art date
Links
Landscapes
- Television Receiver Circuits (AREA)
Abstract
본 발명은 화면의 최대 밝기를 자동으로 조절하여 화면의 밝기가 과도하게 상승하여 발생되는 CRT의 손상을 방지할 수 있도록 한 모니터의 자동 밝기 조절 회로에 관한 것으로, 수평 발진 IC로 부터의 구형파 펄스를 입력받아 스위칭됨으로써 수평출력을 발생시키는 수평출력부와, 상기 수평 출력부의 출력을 권선비에 따라 고압으로 증폭시키며 이를 정류하여 CRT의 애노우드로 출력시키는 플라이 백 트랜스와, 콘트라스트 제어신호를 출력시키는 마이컴과, 상기 마이컴으로 부터 출력되는 제어 신호의 DC 레벨을 결정하고 노이즈를 바이패스시키며 DC레벨을 평활시켜 프리 앰프 IC의 콘트라스트 단자로 출력시키는 일정 전압 출력부와, 상기 플라이 백 트랜스와 일정 전압 출력부 사이에 접속되어 빔 전류가 높아질 때 B+고안을 바이패스 시키는 전압 조절부를 포함하여 구성된다.The present invention relates to an automatic brightness control circuit of a monitor that automatically adjusts the maximum brightness of the screen to prevent damage to the CRT caused by excessive increase in the brightness of the screen. The present invention relates to a square wave pulse from a horizontal oscillation IC. A horizontal output unit for generating a horizontal output by switching the input, a flyback transformer for amplifying the output of the horizontal output unit at a high voltage according to the turns ratio, rectifying and outputting it to the anode of the CRT, A constant voltage output unit which determines a DC level of the control signal output from the microcomputer, bypasses noise, smoothes the DC level, and outputs the result to the contrast terminal of the preamplifier IC, between the flyback transformer and the constant voltage output unit. Voltage regulation to bypass the B + eye when the beam current is high It is configured to include a.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 종래 모니터의 자동 밝기 조절 회로도, 제2도는 본 발명에 따른 모니터의 자동 밝기 조절 회로도.1 is an automatic brightness control circuit diagram of a conventional monitor, Figure 2 is an automatic brightness control circuit diagram of a monitor according to the present invention.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940038688A KR960028325A (en) | 1994-12-29 | 1994-12-29 | Auto Brightness Control Circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940038688A KR960028325A (en) | 1994-12-29 | 1994-12-29 | Auto Brightness Control Circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR960028325A true KR960028325A (en) | 1996-07-22 |
Family
ID=66770036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019940038688A KR960028325A (en) | 1994-12-29 | 1994-12-29 | Auto Brightness Control Circuit |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR960028325A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100429230B1 (en) * | 2001-12-29 | 2004-04-29 | 엘지전자 주식회사 | Apparatus for controlling brightness of a monitor |
| KR100454019B1 (en) * | 1997-05-09 | 2004-12-29 | 현대 이미지퀘스트(주) | A circuit for automatically controlling a scene brightness of monitor |
-
1994
- 1994-12-29 KR KR1019940038688A patent/KR960028325A/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100454019B1 (en) * | 1997-05-09 | 2004-12-29 | 현대 이미지퀘스트(주) | A circuit for automatically controlling a scene brightness of monitor |
| KR100429230B1 (en) * | 2001-12-29 | 2004-04-29 | 엘지전자 주식회사 | Apparatus for controlling brightness of a monitor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WITN | Withdrawal due to no request for examination |