KR960043828A - Limit screen automatic control of screen brightness - Google Patents

Limit screen automatic control of screen brightness Download PDF

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Publication number
KR960043828A
KR960043828A KR1019950014137A KR19950014137A KR960043828A KR 960043828 A KR960043828 A KR 960043828A KR 1019950014137 A KR1019950014137 A KR 1019950014137A KR 19950014137 A KR19950014137 A KR 19950014137A KR 960043828 A KR960043828 A KR 960043828A
Authority
KR
South Korea
Prior art keywords
abl
contrast
screen
brightness
screen brightness
Prior art date
Application number
KR1019950014137A
Other languages
Korean (ko)
Other versions
KR0143274B1 (en
Inventor
김도헌
Original Assignee
배순훈
대우전자 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.)
Filing date
Publication date
Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019950014137A priority Critical patent/KR0143274B1/en
Publication of KR960043828A publication Critical patent/KR960043828A/en
Application granted granted Critical
Publication of KR0143274B1 publication Critical patent/KR0143274B1/en

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Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/42—Flyback transformers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/63—Generation or supply of power specially adapted for television receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/16—Picture reproducers using cathode ray tubes

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Television Receiver Circuits (AREA)

Abstract

본 발명은 마이컴으로부터 인가되는 화면밝기 조절신호에 따라 콘트라스트와 화면밝기가 자동으로 상호 연동하여 조절되어 사용자가 원하는 화면의 밝기를 미세조정할 수 있도록 하는 모니터의 화면밝기 자동 조절회로에 관한 것으로, 모니터의 화면밝기 조절회로를 콘트라스트전압구동부(32)와 ABL 조절단자(42)가 마이컴(10)과 ABL 조절단자의 제어에 의해 상호연동하여 원활하게 구동되도록 비반전증폭기와 트랜지스터 등을 이용하므로써 회로구성이 간단해짐은 물론 가변저항(VR1)에 의해 자동 화면밝기 조절제한(ABL) 후의 밝기결정을 쉽게 할 수 있고 저항(R8)에 의해서 자동 화면밝기 조절제한이 시작되는 지점을 쉽게 맞출 수 있다.The present invention relates to an automatic screen brightness adjustment circuit of a monitor which allows the user to finely adjust the brightness of a desired screen by adjusting the contrast and the screen brightness automatically according to the screen brightness control signal applied from the microcomputer. The circuit configuration is controlled by using a non-inverting amplifier, a transistor, and the like so that the brightness control circuit of the contrast voltage driver 32 and the ABL control terminal 42 interlock with each other under the control of the microcomputer 10 and the ABL control terminal. In addition to simplifying, it is possible to easily determine the brightness after the automatic screen brightness adjustment limit (ABL) by the variable resistor VR1 and easily match the point at which the automatic screen brightness adjustment limit is started by the resistor R8.

Description

모니터의 화면밝기 자동조절 제한회로Limit screen automatic control of screen brightness

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명에 다른 화면밝기 자동조절 제한회로도.2 is a circuit diagram for automatically adjusting the brightness of the screen according to the present invention.

Claims (1)

모니터의 화면밝기를 제어하는 마이컴(10)과; 상기 마이컴으로부터 인가된 신호를 일정신호로 적분시키는적분기, 상기 적분기로부터 인가된 신호와 ABL 조절부로부터 인가된 신호를 비교하여 증폭시키는 비반적 증폭기로 이루어진 콘트라스트제어부(30)와; 상기 콘트라스트제어부(30)에 접속되며 콘트라스트제어부의 가변저항에 인가되는 전류량에따라 밝기가 조절되는 콘트라스트전압구동부(32)와; 상기 콘트라스트제어부(30)를 구성하는 비반전증폭기에 설정된 전압이 인가되도록 하는 ABL 전압조절부, 상기 ABL 조절단자의 동작상태에 따라 온, 오프되어 콘트라스트제어부의 비반전증폭기에 신호를 전송하는 트랜지스터, 상기 트랜지스터에 접속되며 플라이백 트랜스포머에 장착되어 CRT의 화면으로부터 발생되는 빛의 량을 화면밝기와 반비례하여 나타나도록 조절하는 ABL 조절단자로 이루어진 ABL 조절부(40) 등으로 구성되는것을 특징으로 하는 모니터의 화면밝기 자동조절 제한회로.A microcomputer 10 for controlling the screen brightness of the monitor; A contrast controller (30) comprising an integrator for integrating the signal applied from the microcomputer into a predetermined signal, and an inverse amplifier for comparing and amplifying the signal applied from the integrator with the signal applied from the ABL controller; A contrast voltage driver 32 connected to the contrast controller 30 and whose brightness is adjusted according to the amount of current applied to the variable resistor of the contrast controller; An ABL voltage control unit configured to apply a voltage set to a non-inverting amplifier constituting the contrast control unit 30, a transistor turned on and off according to an operation state of the ABL control terminal to transmit a signal to a non-inverting amplifier of the contrast control unit; A monitor connected to the transistor and mounted on a flyback transformer, the monitor comprising an ABL control unit 40 comprising an ABL control terminal for controlling the amount of light generated from the screen of the CRT to be displayed in inverse proportion to the screen brightness Screen brightness automatic control limit circuit. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950014137A 1995-05-31 1995-05-31 Automatic brightness control circuit KR0143274B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950014137A KR0143274B1 (en) 1995-05-31 1995-05-31 Automatic brightness control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950014137A KR0143274B1 (en) 1995-05-31 1995-05-31 Automatic brightness control circuit

Publications (2)

Publication Number Publication Date
KR960043828A true KR960043828A (en) 1996-12-23
KR0143274B1 KR0143274B1 (en) 1998-07-15

Family

ID=19416071

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950014137A KR0143274B1 (en) 1995-05-31 1995-05-31 Automatic brightness control circuit

Country Status (1)

Country Link
KR (1) KR0143274B1 (en)

Also Published As

Publication number Publication date
KR0143274B1 (en) 1998-07-15

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