KR940025320A - Brightness automatic adjustment circuit for distance detection - Google Patents

Brightness automatic adjustment circuit for distance detection Download PDF

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Publication number
KR940025320A
KR940025320A KR1019930007319A KR930007319A KR940025320A KR 940025320 A KR940025320 A KR 940025320A KR 1019930007319 A KR1019930007319 A KR 1019930007319A KR 930007319 A KR930007319 A KR 930007319A KR 940025320 A KR940025320 A KR 940025320A
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KR
South Korea
Prior art keywords
brightness
contrast
distance
control signal
screen
Prior art date
Application number
KR1019930007319A
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Korean (ko)
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KR960005205B1 (en
Inventor
박상열
Original Assignee
배순훈
대우전자 주식회사
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Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019930007319A priority Critical patent/KR960005205B1/en
Publication of KR940025320A publication Critical patent/KR940025320A/en
Application granted granted Critical
Publication of KR960005205B1 publication Critical patent/KR960005205B1/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

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

본 발명은 대형 TV에 관한 것으로, 특히 대형 TV 화면을 가까이에서 시청할 경우 밝은 화면으로 인한 시력 장애원인이 되므로 시청거리에 따라 자동으로 화면의 명암 및 밝기를 자동조정하여 시력을 보호할 수 있도록 한 회로에 관한 것이다.The present invention relates to a large TV, especially when watching a large TV screen in close proximity to the cause of vision impairment due to a bright screen, so that the circuitry to automatically protect the vision by automatically adjusting the contrast and brightness of the screen according to the viewing distance It is about.

종래의 경우 TV 시청에 관계없이 시청자에 의해 한번 조정된 밝기 및 명암은 임의로 조정하기 전에는 일정한 화면으로 출력하는바, TV 시청 거리가 짧은 거리일때는 시청자의 눈의 피로감을 가중시키고, 특히 어린이에게는 치명적일 수 있었다In the conventional case, brightness and contrast, which are adjusted by the viewer once, regardless of watching TV, are output on a constant screen before being arbitrarily adjusted, and when the TV viewing distance is short, the eye fatigue of the viewer is increased, and in particular, it is fatal for children. Could

이에 본 발명은 종래의 문제점을 해소하기 위해 휘도 제어신호와 밝기 제어신호를 출력하는 수단을 구비한 마이콤, 이상거리를 감지하는 센서, 상기 마이콤의 명암/밝기 제어신호와 루미넌스(Y)/칼러(C) 신호를 합성하는 명암/발기 조정IC, 상기 거리감지용 센서로부터 이상 거리를 감지하여 마이콤의 명암/밝기 제어 신호를 제어하는 조정수단을 사용하여 이상 거리 감지에 따른 대형 TV 화면의 명암 조정과 밝기조정을 자동 조절하는 거리 감지용 휘도 자동조절 회로를 제공하는데 있다.Accordingly, the present invention provides a microcomputer with a means for outputting a brightness control signal and a brightness control signal, a sensor for detecting an abnormal distance, the brightness / brightness control signal and luminance (Y) / color ( C) Contrast adjustment and brightness of large TV screen according to abnormal distance detection by using contrast / Erection control IC for synthesizing the signal and adjusting means for detecting the abnormal distance from the distance sensor and controlling the contrast / brightness control signal of the microcomputer. The present invention provides a luminance automatic adjustment circuit for distance sensing that automatically adjusts the adjustment.

본 발명의 작용 효과를 보면, TV에 장착된 거리감지용 센서(30)는 콘트롤 출력단(L)을 통해 감지한 전류량 만큼 pnp 트랜지스터(Q1)를 작동시킴과 동시에 마이콤으로부터 출력된 명암 제어 신호와 밝기 제어신호를 조정하여 명암/밝기 조정 IC(20)의 명암 조정단(I)과 밝기 조정단(J)으로 입력후 (R-Y),(G-Y),(B-Y)단으로 자동 조정된 화면을 출력하는 것이다.In view of the effects of the present invention, the distance sensor 30 mounted on the TV operates the pnp transistor Q1 by the amount of current sensed through the control output terminal L and simultaneously controls the brightness control signal and the brightness output from the microcomputer. The signal is adjusted and input to the contrast adjustment stage (I) and brightness adjustment stage (J) of the contrast / brightness adjustment IC 20, and then the screen automatically adjusted to the (RY), (GY), and (BY) stages is output. .

이와같이 본 발명은 충분한 거리에서 시청하기 위해 밝기 및 명암 조정된 상태에서 시청자 특히 어린이가 TV 가까이에서 시청할 경우 화면조정을 자동으로 줄여 어린이 시력을 보호할 수 있을 뿐 아니라 대형 TV화면에서 발생되는 강한 전자파로 부터도 방지할 수 있는 효과가 있는 발명이다.As described above, the present invention can automatically protect the screen of the viewer when the viewer, especially the child, is watching near the TV in a state where the brightness and contrast are adjusted in order to watch at a sufficient distance, as well as to protect the children's eyesight. It is an invention that can be prevented from.

Description

거리 감지용 휘도 자동조절 회로Brightness automatic adjustment circuit for distance detection

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

도면은 본 발명의 거리 감지용 휘도 자동조절 회로도.Figure is a circuit diagram of automatic brightness adjustment for distance detection of the present invention.

Claims (2)

명암/밝기 제어신호를 출력하는 마이콤(10), 거리감지용센서(30), 명암/밝기 제어신호와 루미너스(Y)/칼러(C) 신호를 합성하는 명암/밝기 조정IC(20)를 구비한 TV 회로에 있어서, 상기 거리 감지용 센서(30)에서 이상거리를 감지하여 마이콤(10)으로부터 출력하는 명암/밝기 제어신호를 자동 제어하는 조정부(40)로 구성됨을 특징으로 하는 거리 감지용 휘도 자동조절 회로.A microcomputer 10 for outputting a contrast / brightness control signal, a sensor 30 for sensing distance, and a contrast / brightness adjustment IC 20 for synthesizing the contrast / brightness control signal and the luminance (Y) / color (C) signal are provided. In one TV circuit, the distance sensing luminance is characterized in that the distance sensing sensor 30 is composed of an adjusting unit 40 for automatically controlling the contrast / brightness control signal output from the microcomputer 10 by detecting the abnormal distance Automatic control circuit. 제 1 항에 있어서, 상기 조정부(40)는 역전류 방지용 다이오드(D1)(D2)와, 트랜지스터(Q1) 보호용 저항(R1), 바이어스 저항(R2), pnp 트랜지스터(Q1)로 구성됨을 특징으로 하는 거리 감지용 휘도 자동조절 회로.The method of claim 1, wherein the adjusting unit 40 is composed of a reverse current prevention diode (D1) (D2), the transistor (Q1) protection resistor (R1), bias resistor (R2), pnp transistor (Q1). Luminance automatic adjustment circuit for distance detection. ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.※ Note: This is to be disclosed by the original application.
KR1019930007319A 1993-04-29 1993-04-29 Brightness automatic regulation circuit KR960005205B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930007319A KR960005205B1 (en) 1993-04-29 1993-04-29 Brightness automatic regulation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930007319A KR960005205B1 (en) 1993-04-29 1993-04-29 Brightness automatic regulation circuit

Publications (2)

Publication Number Publication Date
KR940025320A true KR940025320A (en) 1994-11-19
KR960005205B1 KR960005205B1 (en) 1996-04-22

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ID=19354685

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930007319A KR960005205B1 (en) 1993-04-29 1993-04-29 Brightness automatic regulation circuit

Country Status (1)

Country Link
KR (1) KR960005205B1 (en)

Also Published As

Publication number Publication date
KR960005205B1 (en) 1996-04-22

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