KR970019511A - Luminance / Contrast Control Circuit - Google Patents
Luminance / Contrast Control Circuit Download PDFInfo
- Publication number
- KR970019511A KR970019511A KR1019950033353A KR19950033353A KR970019511A KR 970019511 A KR970019511 A KR 970019511A KR 1019950033353 A KR1019950033353 A KR 1019950033353A KR 19950033353 A KR19950033353 A KR 19950033353A KR 970019511 A KR970019511 A KR 970019511A
- Authority
- KR
- South Korea
- Prior art keywords
- switching
- processing
- signal
- input
- amplifier
- Prior art date
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Abstract
본 발명은 AV형 TV 수신기의 입력신호절환에 따른 휘도/콘트라스트 조절회로에 관한 것으로서, 안테나로부터 수신된 RF 신호를 증폭하는 제1증폭기와, AV 기기로부터 입력된 AV 신호를 증폭하는 제2증폭기와, 사용자의 조작에 따라 인가되는 영상입력 절환신호에 따라 제1증폭기 혹은 제2증폭기에서 출력되는 RF 신호 또는 AV 신호를 절환하여 출력하는 스위칭 IC와, 스위칭 IC에서 출력되는 음성신호를 처리하는 음성처리 IC와 스위칭 IC에서 출력되는 영상신호를 처리하는 영상처리IC와, 음성처리 IC 및 영상처리 IC를 제어하는 마이콤을 구비한 AV형 TV 수신기에 있어서, PC로부터 공급되는 AV 신호가 존재하는 경우 마이콤에서 출력되는 휘도와 콘트라스트 전류를 감소시켜 영상처리 IC로 공급하는 휘도/콘트라스트 조절부로 구성된다. 따라서, 사용자에 의한 영상입력 절환에 따라 AV 입력단자로 PC로부터의 게임 소트프웨어에 의한 영상신호가 입력될 경우 휘도와 콘트라스트를 감소시킴으로써 눈의 피로를 없애며 CRT를 보호할 수 있다.The present invention relates to a luminance / contrast control circuit according to input signal switching of an AV TV receiver, comprising: a first amplifier for amplifying an RF signal received from an antenna; a second amplifier for amplifying an AV signal input from an AV device; A switching IC for switching and outputting an RF signal or an AV signal output from the first amplifier or the second amplifier according to an image input switching signal applied according to a user's operation, and a voice processing for processing an audio signal output from the switching IC An AV-type TV receiver having a video processing IC for processing a video signal output from an IC and a switching IC, and a microcomputer for controlling an audio processing IC and a video processing IC. It is composed of a luminance / contrast controller which reduces the output luminance and contrast current and supplies it to the image processing IC. Therefore, when the video signal input from the PC by the game software is input to the AV input terminal according to the video input switching by the user, the brightness and contrast can be reduced to eliminate eye fatigue and protect the CRT.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제2도는 AV형 TV 수신기에 있어서 본 발명에 의한 입력신호절환에 따른 휘도/콘트라스트 조절회로를 나타낸 블럭도이다.2 is a block diagram showing a luminance / contrast adjustment circuit according to an input signal switching according to the present invention in an AV TV receiver.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950033353A KR970019511A (en) | 1995-09-30 | 1995-09-30 | Luminance / Contrast Control Circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950033353A KR970019511A (en) | 1995-09-30 | 1995-09-30 | Luminance / Contrast Control Circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
KR970019511A true KR970019511A (en) | 1997-04-30 |
Family
ID=66583259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950033353A KR970019511A (en) | 1995-09-30 | 1995-09-30 | Luminance / Contrast Control Circuit |
Country Status (1)
Country | Link |
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KR (1) | KR970019511A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100755841B1 (en) * | 2005-12-21 | 2007-09-07 | 엘지전자 주식회사 | The display device for having the function of controlling the brightness according to source by inputted and method for controlling the same |
-
1995
- 1995-09-30 KR KR1019950033353A patent/KR970019511A/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100755841B1 (en) * | 2005-12-21 | 2007-09-07 | 엘지전자 주식회사 | The display device for having the function of controlling the brightness according to source by inputted and method for controlling the same |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WITN | Withdrawal due to no request for examination |