KR970019693A - Screen control device of liquid crystal display device - Google Patents

Screen control device of liquid crystal display device Download PDF

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Publication number
KR970019693A
KR970019693A KR1019950032197A KR19950032197A KR970019693A KR 970019693 A KR970019693 A KR 970019693A KR 1019950032197 A KR1019950032197 A KR 1019950032197A KR 19950032197 A KR19950032197 A KR 19950032197A KR 970019693 A KR970019693 A KR 970019693A
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KR
South Korea
Prior art keywords
personal computer
contrast
demodulator
unit
switching
Prior art date
Application number
KR1019950032197A
Other languages
Korean (ko)
Other versions
KR0183740B1 (en
Inventor
박명수
Original Assignee
김광호
삼성전자 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.)
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Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019950032197A priority Critical patent/KR0183740B1/en
Publication of KR970019693A publication Critical patent/KR970019693A/en
Application granted granted Critical
Publication of KR0183740B1 publication Critical patent/KR0183740B1/en

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    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • 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
    • H04N5/455—Demodulation-circuits

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Theoretical Computer Science (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

본 발명은 텔레비전 수상기와 퍼스널 컴퓨터의 모니터로 겸용하여 사용되는 액정표시 장치에 있어서 텔레비젼 수상기와 퍼스널 컴퓨터 모니터로 전환시 각각의 모드에 적합한 액정표시를 할 수 있도록 화면을 제어하는 장치에 관한 것으로서, 비디오 입력신호를 RGB신호로 변환시키는 복조부; 상기 복조부로부터 출력된 비디오 입력신호와 퍼스널 컴퓨터로의 입력신호를 절환선택하는 스위칭부; 상기 스위칭부에서 선택된 신호의 이득을 조정하는 이득 조정부; 상기 이득 조정부로부터 출력된 신호를 디지털로 변환시키는 A/D변환부; 상기 A/D변환부로부터 출력된 신호의 콘트라스트와 브라이트를 텔레비젼 수상기로 사용될 때와 퍼스널 컴퓨터로 사용될 때를 구별하여 조정하는 콘트라스트/브라이트 조정부; 상기 RGB복조부, 스위칭부 및 콘트라스트/ 브라이트 조정부를 제어하는 마이크로 프로세서; 및 상기 마이크로 프로세서의 데이터를 저장하는 ROM를 포함한다.BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for controlling a screen so that a liquid crystal display suitable for each mode can be obtained when switching to a television receiver and a personal computer monitor in a liquid crystal display device used as a monitor for a television receiver and a personal computer. A demodulator for converting an input signal into an RGB signal; A switching unit for switching between a video input signal output from the demodulator and an input signal to a personal computer; A gain adjusting unit adjusting the gain of the signal selected by the switching unit; An A / D converter converting the signal output from the gain adjuster to digital; A contrast / brightness adjustment unit for discriminating and adjusting the contrast and the brightness of the signal output from the A / D conversion unit when used as a television receiver and when used as a personal computer; A microprocessor controlling the RGB demodulator, the switching unit, and the contrast / bright adjustment unit; And a ROM that stores data of the microprocessor.

따라서 상술한 바와 같이 본 발명에 따른 액정화면 표시장치는 텔레비젼 수상기와 퍼스널 컴퓨터의 모니터로 사용시 각 모드별로 콘트라스트와 브라이트를 자동으로 조절함으로써, 사용자의 시력보호 및 편안한 액정화면의 시청을 할 수 있는 잇점을 갖는다.Therefore, as described above, the LCD screen display device according to the present invention automatically adjusts the contrast and the brightness of each mode when used as a monitor of a television receiver and a personal computer, thereby protecting the eyesight of the user and viewing a comfortable LCD screen. Has

Description

액정표시 장치의 화면 제어 장치Screen control device of liquid crystal display device

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

제2도는 제1도에 도시된 액정표시 장치의 제어장치의 개략적인 시스템 구성을 보이는 도면이다.FIG. 2 is a diagram showing a schematic system configuration of the control device of the liquid crystal display shown in FIG.

제3도는 본 발명에 따른 액정표시 장치의 구성을 보이는 블록도이다.3 is a block diagram showing the configuration of a liquid crystal display according to the present invention.

Claims (1)

액정표시 장치의 화면제어 장치에 있어서, 비디오 입력신호를 RGB신호로 변환시키는 복조부; 상기 복조부로부터 출력된 비디오 입력신호와 퍼스널 컴퓨터로의 입력신호를 절환선택하는 스위칭부; 상기 스위칭부에서 선택된 신호의 이들을 조정하는 이득 조정부; 상기 이득 조정부로부터 출력된 신호를 디지털로 변환시키는 A/D변환부; 상기 A/D변환부로부터 출력된 신호의 콘트라스트와 브라이트를 텔레비젼 수상기에 사용될 때와 퍼스널 컴퓨터로 사용될 때를 구별하여 조정하는 콘트라스트/브라이트 조정부; 상기 RGB복조부, 스위칭부 및 콘트라스트/브라이트 조정부를 제어하는 마이크로 프로세서; 및 상기 마이크로 프로세서의 데이터를 저장하는 ROM를 포함하는 것을 특징으로 하는 액정표시 장치의 화면제어 장치.A screen control device of a liquid crystal display device, comprising: a demodulator for converting a video input signal into an RGB signal; A switching unit for switching between a video input signal output from the demodulator and an input signal to a personal computer; A gain adjuster for adjusting these of the signals selected by the switch; An A / D converter converting the signal output from the gain adjuster to digital; A contrast / bright adjustment unit for discriminating and adjusting the contrast and the brightness of the signal output from the A / D conversion unit when used in a television receiver and when used in a personal computer; A microprocessor for controlling the RGB demodulator, the switching unit, and the contrast / bright adjustment unit; And a ROM that stores data of the microprocessor. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950032197A 1995-09-27 1995-09-27 Screen control apparatus for lcd KR0183740B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950032197A KR0183740B1 (en) 1995-09-27 1995-09-27 Screen control apparatus for lcd

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950032197A KR0183740B1 (en) 1995-09-27 1995-09-27 Screen control apparatus for lcd

Publications (2)

Publication Number Publication Date
KR970019693A true KR970019693A (en) 1997-04-30
KR0183740B1 KR0183740B1 (en) 1999-05-01

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Application Number Title Priority Date Filing Date
KR1019950032197A KR0183740B1 (en) 1995-09-27 1995-09-27 Screen control apparatus for lcd

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040006303A (en) * 2002-07-11 2004-01-24 엘지전자 주식회사 Luminance control device for monitor

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