KR980007568A - Television with sub picture brightness correction function in PIP mode - Google Patents

Television with sub picture brightness correction function in PIP mode Download PDF

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Publication number
KR980007568A
KR980007568A KR1019960023419A KR19960023419A KR980007568A KR 980007568 A KR980007568 A KR 980007568A KR 1019960023419 A KR1019960023419 A KR 1019960023419A KR 19960023419 A KR19960023419 A KR 19960023419A KR 980007568 A KR980007568 A KR 980007568A
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KR
South Korea
Prior art keywords
screen
sub
video signal
unit
main
Prior art date
Application number
KR1019960023419A
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Korean (ko)
Inventor
강권학
Original Assignee
배순훈
대우전자주식회사
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Publication date
Application filed by 배순훈, 대우전자주식회사 filed Critical 배순훈
Priority to KR1019960023419A priority Critical patent/KR980007568A/en
Publication of KR980007568A publication Critical patent/KR980007568A/en

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  • Picture Signal Circuits (AREA)

Abstract

본 발명은 텔레비전의 PIP(Picture In Picture)기능 수행시 주화면이 어두운 경우 부화면의 신호전압을 강하함으로써 부화면 발기를 보정하여 전체적인 화질을 개선할 수 있도록 PIP모드시 부화면 밝기보정기능을 갖춘 텔레비전을 제공하는 것을 목적으로 하며, 입력된 복합영상신호를 주/부 복합영상신호로 분리하는 다화면 모드절환부(10)와, 상기 다화면 모드절환부(10)에서 분리되어 입력된 부화면 복합영상신호를 영상신호처리하는 부화면 처리부(30), 상기 영상신호처리된 부화면 영상신호를 소정의 증폭도로 증폭하는 증폭부(40), 상기 다화면 모드절환부(10)에서 분리되어 입력된 주화면 복합영상신호와 상기 증폭부(40)로부터 인가된 부화면 영상신호를 PIP처리하여 CRT(60)상으로 다화면이 재생출력되도록 하는 주화면 처리부(20), 상기 주화면 처리부(20)로부터 인가된 수평수직 동기신호를 근거로 주화면 밝기에 대한 ABL전류를 출력하는 편향부(50) 및, 상기 ABL전류를 근거로 상기 주화면 처리부(20)로 인가되는 부화면 영상신호의 전압을 조절하여 부화면 밝기를 조정하는 부화면 보정회로(70)로 구성되어 PIP기능 수행시 텔레비전의 주화면이 어두우면, 자동으로 부화면의 밝기가 보정됨으로써 주/부화면간의 밝기차에 의해 야기되었던 화면 열화요건을 해소하여 PIP모드시 선명한 화질을 제공할 수 있게 된다.According to the present invention, when the main screen is dark when the PIP (Picture In Picture) function of the television is performed, the sub picture brightness correction function is provided in the PIP mode so that the overall picture quality can be improved by correcting the sub picture erection by lowering the signal voltage of the sub screen. It is an object to provide a television, the multi-screen mode switching unit 10 for separating the input composite video signal into a main / sub composite video signal, and the sub-screen separated from the multi-screen mode switching unit 10 input Separated from the sub-screen processing unit 30 for processing a video signal composite video signal, the amplification unit 40 for amplifying the sub-screen video signal processed by a predetermined amplification, and the multi-screen mode switching unit 10 A main screen processing unit 20 and a main screen processing unit 20 to PIP-process the main screen composite video signal and the sub-screen video signal applied from the amplifying unit 40 to reproduce and output the multi-screen on the CRT 60. From A deflection unit 50 for outputting the ABL current for the main screen brightness based on the horizontal and vertical synchronization signals applied from the control unit; and a voltage of the sub-screen image signal applied to the main screen processing unit 20 based on the ABL current. When the main screen of the television is dark when the PIP function is performed, the brightness of the sub screen is automatically corrected so that the brightness of the sub screen is caused by the brightness difference between the main and sub screens. By eliminating the screen deterioration requirement, it is possible to provide clear picture quality in PIP mode.

Description

PIP모드시 부화면 밝기보정기능을 갖춘 텔레비전Television with sub picture brightness correction function in PIP mode

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

제 2도는 본 발명의 일실시예에 따른 PIP모드시 부화면 밝기보정기능을 갖춘 텔레비전의 영상처리계통의 구성을 나타낸 도면이다.2 is a diagram illustrating a configuration of an image processing system of a television having a sub-screen brightness correction function in a PIP mode according to an embodiment of the present invention.

Claims (2)

입력된 복합영상신호를 주/부 복합영상신호로 분리하여 다화면 모드절화부(10)와, 상기 다화면 모드절환부(10)에서 분리되어 입력된 부화면 복합영상신호를 영상신호처리하는 부화면 처리부(30), 상기 영상신호처리된 부화면 영상신호를 소정의 증폭도로 증폭하는 증폭부(40), 상기 다화면 모드절환부(10)에서 분리되어 입력된 주화면 복합영상신호와 상기 증폭부(40)로부터 인가된 부화면 영상신호를 PIP처리하여 CRT(60)상으로 다화면이 재생출력되도록 하는 주화면 처리부(20), 상기 주화면 처리부(20)로부터 인가된 수평수직 동기신호를 근거로 주화면 밝기에 대한 ABL전류를 출력하는 편향부(50) 및, 상기 ABL전류를 근거로 상기 주화면 처리부(20)로 인가되는 부화면 영상신호의 전압을 조절하여 부화면 밝기를 조정하는 부화면 보정회로(70)로 구성된 것을 특징으로 하는 PIP모드시 부화면 밝기보정기능을 갖춘 텔레비전.A multi-screen mode switching unit 10 and a sub-screen composite video signal separated and inputted by the multi-screen mode switching unit 10 by separating the input composite video signal into a main / sub composite video signal. A main screen composite video signal and the amplification separated from the screen processor 30, the amplifying unit 40 for amplifying the sub-screen image signal processed by the image signal with a predetermined amplification, and the multi-screen mode switching unit 10 PIP processing of the sub-screen video signal applied from the unit 40 to output the multi-screen on the CRT 60 and output the horizontal and vertical synchronization signal from the main screen processing unit 20. The sub-screen brightness is adjusted by controlling the voltage of the sub-screen image signal applied to the main screen processor 20 based on the deflection unit 50 and the ABL current based on the ABL current. Characterized in that it consists of a sub-screen correction circuit 70 TV with sub picture brightness correction function in PIP mode. 제 1항에 있어서, 상기 부화면 보정회로(70)는 베이스단은 저항소자(R1)를 매개로 상기 편향부(50)의 출력단과 연결되어 있고, 그 에미터단은 저항소자(R4)를 매개로 접지되어 있으며, 그 컬렉터단은 저항소자(R2)를 매개로 전원단(B+)과 연결된 트랜지스터(T1)와, 애노드는 상기 주화면 처리부(20)의 부화면 영상신호 입력선에 연결되어 있고, 그 캐소드는 저항소자(R3)를 매개로 상기 트랜지스터(T1)의 컬렉터단에 접속되어 있는 역전류 방지용다이오드(D1)로 구성된 것을 특징으로 하는 PIP모드시 부화면 밝기보정기능을 갖춘 텔레비전.The display device of claim 1, wherein the sub-screen correction circuit 70 is connected to an output terminal of the deflection unit 50 via a resistor R1, and an emitter terminal of the sub-screen correction circuit 70. The collector terminal is connected to the power supply terminal B + via the resistor element R2, and the anode is connected to the sub-screen video signal input line of the main screen processing unit 20. And the cathode comprises a reverse current prevention diode (D1) connected to a collector terminal of the transistor (T1) via a resistance element (R3).
KR1019960023419A 1996-06-25 1996-06-25 Television with sub picture brightness correction function in PIP mode KR980007568A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960023419A KR980007568A (en) 1996-06-25 1996-06-25 Television with sub picture brightness correction function in PIP mode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960023419A KR980007568A (en) 1996-06-25 1996-06-25 Television with sub picture brightness correction function in PIP mode

Publications (1)

Publication Number Publication Date
KR980007568A true KR980007568A (en) 1998-03-30

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ID=66287602

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960023419A KR980007568A (en) 1996-06-25 1996-06-25 Television with sub picture brightness correction function in PIP mode

Country Status (1)

Country Link
KR (1) KR980007568A (en)

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