KR980004305A - Monitor contrast automatic adjustment circuit - Google Patents

Monitor contrast automatic adjustment circuit Download PDF

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Publication number
KR980004305A
KR980004305A KR1019960023121A KR19960023121A KR980004305A KR 980004305 A KR980004305 A KR 980004305A KR 1019960023121 A KR1019960023121 A KR 1019960023121A KR 19960023121 A KR19960023121 A KR 19960023121A KR 980004305 A KR980004305 A KR 980004305A
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KR
South Korea
Prior art keywords
contrast
monitor
output
microcomputer
signal
Prior art date
Application number
KR1019960023121A
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Korean (ko)
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KR100214777B1 (en
Inventor
이문걸
Original Assignee
배순훈
대우전자 주식회사
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Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019960023121A priority Critical patent/KR100214777B1/en
Publication of KR980004305A publication Critical patent/KR980004305A/en
Application granted granted Critical
Publication of KR100214777B1 publication Critical patent/KR100214777B1/en

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/10—Intensity circuits
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/066—Adjustment of display parameters for control of contrast

Abstract

본 발명은 모니터의 콘트라스트 조정회로에 관한 것으로, 마이컴에서 출력되는 콘트라스트 신호가 처리되어 비디오 전치증폭단의 개인조정단자에 인가되는 모니터에 있어서, 상기 마이컴의 출력단에 접속되어 기준신호를 발생하는 기준신호발생부; 상기 기준신호발생부의 출력단에 접속되어 저대역의 신호만을 통과시키는 저대역필터; 상기 저대역필터의 출력단에 접속되고 상기 마이컴의 제어신호와 ABL전압을 비교하는 비교부; 상기 비교부의 출력단에 접속되어 모니터의 콘트라스틀 조절하는 콘트라스트 조절부; 상기 모니터의 FBT에서 출력되는 ABL전압을 감지하는 설정전압감지부; 상기 비교기의 일측단자에 접속되어 상기 설정전압감지부에서 출력된 신호에 따라 전압을 스위칭하는 스위칭부; 상기 마이컴의 일측에서 분기되고, 상기 스위칭부와 상기 설정전압감지부에 접속되어 모니터에서 동영상 출력시에 콘트라스트를 상향 조정시키는 콘트리스트 상향조정부로 이루어져 모니터에서 동영상의 출력모드시에는 화면밝기를 상향 조정시킴으로써 사용자가 생생한 동영상 화질을 즐길수 있도록 하는 모니터의 콘트라스트 자동조정회로에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contrast adjustment circuit of a monitor, wherein in a monitor in which a contrast signal output from a microcomputer is processed and applied to a personal adjustment terminal of a video preamplifier, a reference signal is generated which is connected to an output terminal of the microcomputer to generate a reference signal. part; A low band filter connected to an output terminal of the reference signal generator to pass only a low band signal; A comparison unit connected to an output terminal of the low band filter and comparing the control signal of the microcomputer with an ABL voltage; A contrast adjusting unit connected to an output terminal of the comparing unit to adjust a contrast of the monitor; A set voltage detector configured to detect an ABL voltage output from the FBT of the monitor; A switching unit connected to one terminal of the comparator and switching a voltage according to a signal output from the set voltage sensing unit; It is branched from one side of the microcomputer, and is connected to the switching unit and the set voltage sensing unit, and a contrast up-adjustment unit for adjusting the contrast up during video output on the monitor. The present invention relates to a contrast automatic adjustment circuit of a monitor that allows a user to enjoy vivid video quality.

Description

모니터의 콘트라스트 자동조정회로Monitor contrast automatic adjustment circuit

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

제2도는 본 발명에 따른 모니터의 콘트라스트 자동조정회로를 나타내는 도면이다.2 is a diagram showing a contrast automatic adjustment circuit of a monitor according to the present invention.

Claims (2)

마이컴(10)에서는 출력되는 콘트라스트신호가 처리되 비디오 전치증폭단(50')의 게인조정단자에 인가되는 모니터에 있어서, 상기 마이컴(10)의 출력단에 접속되어 기준신호를 발생하는 기준신호발생부(20); 상기 기준신호발생부(20)의 출력단에는 접속되어 저대역의 신호만을 통과시키는 저대역필터(30); 상기 저대역필터(30)의 출력단에 접속되고 상기 마이컴(10)의 제어신호와 ABL전압을 비교하는 비교(40); 상기 비교부(40)으 출력단에 접속되어 모니터의 콘트라스트를 조절하는 콘트라스트 조절부(50); 모니터의 FBT에서 출력되는 ABL전압을 감지하는 설정전압감지부(70); 상기 비교기(40)의 일측단자에 접속되어 상기 설정전압감지부(70)에서 출력된 신호에 따라 전압을 스위칭하는 스위칭부(60); 상기 마이컴(10)의 일측에서 분기되고, 상기 스위칭부(60)와 상기 설정전압감지부(70)에 접속되어 모니터에서 동영상 출력시에 콘트라스트를 상향조정시키는 콘트라스트 상향조정부(80)로 이루어진 모니터의 모니터의 콘트라스트 자동조정회로.In the microcomputer 10, the output contrast signal is processed and applied to the gain adjusting terminal of the video preamplifier 50 ', and is connected to the output terminal of the microcomputer 10 so as to generate a reference signal. 20); A low band filter 30 connected to an output terminal of the reference signal generator 20 to pass only a low band signal; A comparison (40) connected to an output terminal of the low band filter (30) and comparing the control signal of the microcomputer (10) with an ABL voltage; A contrast controller 50 connected to an output terminal of the comparator 40 to adjust contrast of the monitor; A set voltage detecting unit 70 detecting an ABL voltage output from the FBT of the monitor; A switching unit 60 connected to one terminal of the comparator 40 to switch a voltage according to a signal output from the set voltage detecting unit 70; A monitor branched from one side of the microcomputer 10 and connected to the switching unit 60 and the set voltage detecting unit 70 and configured to have a contrast up-adjustment unit 80 that adjusts the contrast up when a video is output from the monitor. Monitor contrast automatic adjustment circuit. 제1항에 있어서, 상기 콘트라스트 상향조정부(80)는 상기 마이컴(10)에서 출력된 신호에 따라 스위칭동작 하는 트랜지스터(Q2)의 베이스단에 트랜지스터 보호용 저항(R10)과 가속용 캐패시터(C10)가 병렬접속되고 상기 트랜지스터(Q2)의 에미터단으로 리플전압제거부(81)가 접속되어 구성된 것을 특징으로 하는 모니터의 콘트라스트 자동조정회로.2. The transistor of claim 1, wherein the contrast upward adjuster 80 includes a transistor protection resistor R10 and an acceleration capacitor C10 at a base end of the transistor Q2 that switches according to the signal output from the microcomputer 10. And a ripple voltage removing unit (81) connected in parallel to the emitter terminal of the transistor (Q2). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019960023121A 1996-06-24 1996-06-24 Contrast adjusting circuit for monitor KR100214777B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960023121A KR100214777B1 (en) 1996-06-24 1996-06-24 Contrast adjusting circuit for monitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960023121A KR100214777B1 (en) 1996-06-24 1996-06-24 Contrast adjusting circuit for monitor

Publications (2)

Publication Number Publication Date
KR980004305A true KR980004305A (en) 1998-03-30
KR100214777B1 KR100214777B1 (en) 1999-08-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960023121A KR100214777B1 (en) 1996-06-24 1996-06-24 Contrast adjusting circuit for monitor

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KR (1) KR100214777B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100443977B1 (en) * 2001-06-14 2004-08-09 삼성전자주식회사 Display apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100443977B1 (en) * 2001-06-14 2004-08-09 삼성전자주식회사 Display apparatus
US6795065B2 (en) 2001-06-14 2004-09-21 Samsung Electronics Co., Ltd Display apparatus

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Publication number Publication date
KR100214777B1 (en) 1999-08-02

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