KR940015587A - Bright and contrast automatic control circuit of liquid crystal display - Google Patents
Bright and contrast automatic control circuit of liquid crystal display Download PDFInfo
- Publication number
- KR940015587A KR940015587A KR1019920025800A KR920025800A KR940015587A KR 940015587 A KR940015587 A KR 940015587A KR 1019920025800 A KR1019920025800 A KR 1019920025800A KR 920025800 A KR920025800 A KR 920025800A KR 940015587 A KR940015587 A KR 940015587A
- Authority
- KR
- South Korea
- Prior art keywords
- signal
- bright
- contrast
- output
- control signal
- Prior art date
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- Liquid Crystal Display Device Control (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
본 발명은 외부 조도를 감지하는 광센서의 전기적 신호에 따라 브라이트 및 콘트라스트가 적정상태로 자동조절 되도록 함으로써, 사용자의 불편을 해소하기 위한 것으로, 외부 조도에 따라 전기적 신호를 출력하는 광센서부와, 상기 광센서부의 출력에 연결되어 출력신호를 마이콤 입력에 적절한 신호로 변환하는 변환부와, 상기 변환부의 출력신호를 인가받아 브라이트 및 콘트라스트 제어신호를 출력하는 마이콤과, 상기 마이콤의 브라이트 및 콘트라스트 제어신호를 인가받아 브라이트 및 콘트라스트 조절신호를 출력하는 조절부로 구성됨을 특징으로 하는 액정표시기의 브라이트 및 콘트라스트 자동조절회로다.The present invention is to solve the user's discomfort by automatically adjusting the brightness and contrast to the appropriate state according to the electrical signal of the optical sensor for detecting the external illuminance, the optical sensor unit for outputting the electrical signal according to the external illuminance, A conversion unit connected to an output of the optical sensor unit and converting an output signal into a signal suitable for a microcomputer input, a microcomputer receiving a output signal of the conversion unit to output a bright and contrast control signal, and a bright and contrast control signal of the micom; Bright and contrast automatic control circuit of the liquid crystal display, characterized in that consisting of a control unit for outputting a bright and contrast control signal is applied.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제2도는 본 발명 액정표시기의 브라이트 및 콘트라스트 자동조절회로를 나타낸 블록도.2 is a block diagram showing a bright and contrast automatic control circuit of the liquid crystal display of the present invention.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019920025800A KR940015587A (en) | 1992-12-28 | 1992-12-28 | Bright and contrast automatic control circuit of liquid crystal display |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019920025800A KR940015587A (en) | 1992-12-28 | 1992-12-28 | Bright and contrast automatic control circuit of liquid crystal display |
Publications (1)
Publication Number | Publication Date |
---|---|
KR940015587A true KR940015587A (en) | 1994-07-21 |
Family
ID=67356879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019920025800A KR940015587A (en) | 1992-12-28 | 1992-12-28 | Bright and contrast automatic control circuit of liquid crystal display |
Country Status (1)
Country | Link |
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KR (1) | KR940015587A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR19990073764A (en) * | 1998-03-03 | 1999-10-05 | 이종수 | Monitor device with adjustable brightness |
KR100440710B1 (en) * | 1996-07-31 | 2004-10-14 | 삼성전자주식회사 | Liquid crystal display device having an automatic contrast ratio controlling circuit, particularly concerned with automatically controlling a contrast ratio according to a light radiated outside at a random angle |
KR100725684B1 (en) * | 2001-06-22 | 2007-06-07 | 엘지전자 주식회사 | Apparatus and method for controlling a back light in LCD |
KR100811352B1 (en) * | 2005-03-29 | 2008-03-10 | 샤프 가부시키가이샤 | Area lighting device and liquid crystal display device having the same |
US8031167B2 (en) | 2007-02-01 | 2011-10-04 | Samsung Electronics Co., Ltd. | Method and apparatus for controlling backlight in display device |
-
1992
- 1992-12-28 KR KR1019920025800A patent/KR940015587A/en not_active Application Discontinuation
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100440710B1 (en) * | 1996-07-31 | 2004-10-14 | 삼성전자주식회사 | Liquid crystal display device having an automatic contrast ratio controlling circuit, particularly concerned with automatically controlling a contrast ratio according to a light radiated outside at a random angle |
KR19990073764A (en) * | 1998-03-03 | 1999-10-05 | 이종수 | Monitor device with adjustable brightness |
KR100725684B1 (en) * | 2001-06-22 | 2007-06-07 | 엘지전자 주식회사 | Apparatus and method for controlling a back light in LCD |
KR100811352B1 (en) * | 2005-03-29 | 2008-03-10 | 샤프 가부시키가이샤 | Area lighting device and liquid crystal display device having the same |
US8031167B2 (en) | 2007-02-01 | 2011-10-04 | Samsung Electronics Co., Ltd. | Method and apparatus for controlling backlight in display device |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WITN | Withdrawal due to no request for examination |