KR890003228A - Picture-in-Picture External Add-ons - Google Patents

Picture-in-Picture External Add-ons Download PDF

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Publication number
KR890003228A
KR890003228A KR1019870007607A KR870007607A KR890003228A KR 890003228 A KR890003228 A KR 890003228A KR 1019870007607 A KR1019870007607 A KR 1019870007607A KR 870007607 A KR870007607 A KR 870007607A KR 890003228 A KR890003228 A KR 890003228A
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KR
South Korea
Prior art keywords
signal
picture
signals
main
sub
Prior art date
Application number
KR1019870007607A
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Korean (ko)
Inventor
이경근
Original Assignee
안시환
삼성전자 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.)
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Publication date
Application filed by 안시환, 삼성전자 주식회사 filed Critical 안시환
Priority to KR1019870007607A priority Critical patent/KR890003228A/en
Publication of KR890003228A publication Critical patent/KR890003228A/en

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Abstract

내용 없음No content

Description

텔레비젼의 픽쳐-인-픽쳐 외부 부가장치Picture-in-Picture External Attachments on TV

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

제1도는 본 발명에 따른 회로도.1 is a circuit diagram according to the present invention.

Claims (1)

텔레비젼의 픽쳐-인-픽쳐 기능을 위한 회로에 있어서, 비디오 입력단자(Vin)를 통해 소정 TV의 합성비디오 신호를 입력하여 주화면 생성을 위한 Y, R-Y, B-Y 신호로 분류하는 주디코더(20)와, 안테나로 부터 입력되는 RF신호를 고주파 증폭 및 검파하여 합성비디오 신호를 출력하는 고주파 증폭 및 검파회로(10)와, 상기고주파 증폭 및 검파회로(10)에서 출력되는 합성비디오 신호를 받아 부화면 생성을 위한 Y, R-Y, B-Y신호로 분류하는 부디코더(60)와, 상기 소주파 증폭 및 검파회로(10)에서 출력되는 합성비디오 신호에서 수직 및 수평 동기신호들을 분리하여 부화된 수직동기신호(43) 및 부화면 수평동기신호(41)를 출력하는 동시에 상기 비디오 입력단자(Vin)를 통해 입력되는 주 합성비디오 신호에서 수직 및 수평 동기신호들을 분리하여 주화된 수직 동기신호(44) 및 주화면 수평 동기신호(42)를 출력하는 동기 분리회로(40)와, 상기 부디코더(60)에서 출력되는 아날로그 신호로 된 Y, R-Y, B-Y신호를 디지탈 신호로 변환하는 A/D변환기(90)와, 상기 A/D변환기(90)에서 디지탈화된 Y, R-Y, B-Y신호를 입력하여 주화면의 적당한 위치에 부화된 신호가 주사될 수 있도록 소정시간 동안 상기 디지탈화된 부화면 신호를 메모리하는 메모리부(110)와, 상기 메모리부(110)로 부터 출력된 디지탈화 된 Y, R-Y, B-Y 신호를 아날로그 신호로 변환하는 A/D변한기(80)와, 상기 주디코더(20)에서 출력된 주화면 Y, R-Y, B-Y신호와 상기 A/D변환기(80)로 부터 출력된 부화면Y,R-Y,B-Y신호를 입력하여 소정 제어신호(CON4)에 따라 상기 주화면 신호 또는 부화면 신호를 선택적으로 출력함으로써 주화면 속에 부화면이 포함되도록 제어하는 비디오 스위치(50)와, 상기 도기 분리회로(40)에서 출력된 수직 및 수평 동기신호에 대응하여 상기 A/D변환기(90)와 메모리부(110)와 D/A변환기(80)및 비디오 스위치(50)에 소정 제어신호를 제공함으로써 각부 동작 수행을 전체적으로 제어하는 타임콘트롤러(70)와, 상기 비디오 스위치(50)로 부터 출력되는 주, 부화면이 포함된 Y, R-Y, B-Y신호를 TV의 비디오 신호 입력에 맞도록 다시 합성비디오 신호로 환원시키는 인코더(30)로 구성됨을 특징으로 하는 픽쳐-인-픽쳐 기능 외부 부가장치.In the circuit for the picture-in-picture function of a television, the main decoder 20 which inputs a composite video signal of a predetermined TV through a video input terminal Vin and classifies it as a Y, RY, BY signal for generating a main picture. And a high frequency amplification and detection circuit 10 for outputting a composite video signal by amplifying and detecting an RF signal input from an antenna, and a sub-picture receiving a composite video signal output from the high frequency amplification and detection circuit 10. A sub-coder 60 classified into a Y, RY, and BY signal for generation, and a vertical synchronization signal obtained by separating vertical and horizontal synchronization signals from a composite video signal output from the small frequency amplification and detection circuit 10 ( 43) and a main vertical sync signal 44 and a main signal by separating the vertical and horizontal sync signals from the main composite video signal inputted through the video input terminal Vin while simultaneously outputting the sub picture horizontal sync signal 41; A synchronous separation circuit 40 for outputting the screen horizontal synchronization signal 42, and an A / D converter 90 for converting Y, RY, BY signals, which are analog signals output from the sub-decoder 60, into digital signals. And a memory unit for inputting the digitalized Y, RY, and BY signals from the A / D converter 90 to store the digitalized sub-screen signal for a predetermined time so that the loaded signal can be scanned at an appropriate position of the main screen. 110, an A / D converter 80 for converting the digitalized Y, RY, BY signals output from the memory unit 110 into analog signals, and a main screen output from the main decoder 20. Y, RY, BY signals and the sub picture Y, RY, BY signals output from the A / D converter 80 are input to selectively select the main picture signal or the sub picture signal according to a predetermined control signal CON 4 . And a video switch 50 for controlling the sub-screen to be included in the main screen by outputting the same. By providing predetermined control signals to the A / D converter 90, the memory unit 110, the D / A converter 80, and the video switch 50 in response to the vertical and horizontal synchronization signals output from the 40. The Y, RY and BY signals including the time controller 70 and the main and sub-screens output from the video switch 50 are converted back into a composite video signal to match the video signal input of the TV. Picture-in-picture external external device, characterized in that consisting of an encoder (30) for reducing. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019870007607A 1987-07-14 1987-07-14 Picture-in-Picture External Add-ons KR890003228A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019870007607A KR890003228A (en) 1987-07-14 1987-07-14 Picture-in-Picture External Add-ons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019870007607A KR890003228A (en) 1987-07-14 1987-07-14 Picture-in-Picture External Add-ons

Publications (1)

Publication Number Publication Date
KR890003228A true KR890003228A (en) 1989-04-13

Family

ID=68279576

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019870007607A KR890003228A (en) 1987-07-14 1987-07-14 Picture-in-Picture External Add-ons

Country Status (1)

Country Link
KR (1) KR890003228A (en)

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