KR950004971A - TV's PI Screen Muting Circuit - Google Patents

TV's PI Screen Muting Circuit Download PDF

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Publication number
KR950004971A
KR950004971A KR1019930014914A KR930014914A KR950004971A KR 950004971 A KR950004971 A KR 950004971A KR 1019930014914 A KR1019930014914 A KR 1019930014914A KR 930014914 A KR930014914 A KR 930014914A KR 950004971 A KR950004971 A KR 950004971A
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KR
South Korea
Prior art keywords
signal
color
unit
pip
synchronization
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Application number
KR1019930014914A
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Korean (ko)
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KR950015099B1 (en
Inventor
박노길
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이헌조
주식회사 금성사
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Priority to KR1019930014914A priority Critical patent/KR950015099B1/en
Publication of KR950004971A publication Critical patent/KR950004971A/en
Application granted granted Critical
Publication of KR950015099B1 publication Critical patent/KR950015099B1/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
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen
    • 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
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals

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

Abstract

본 발명은 티브이의 피아이피화면 뮤팅회로에 관한 것으로, 종래에는 피아이피신호가 선택되어 씨피티화면에 디스플레이될때 피아이피신호가 없으면 피아이피신호 경로의 노이즈신호가 피아이피화면에 디스플레이되거나 동기신호가 없어서 피아이피화면의 동기가 무너진 화면이 나타나든가 하는 이상신호가 디스플레이되어 피아이피화면 시청시 거부감을 느끼게 하는 문제점이 있었다.The present invention relates to a PIP screen muting circuit of a TV. Conventionally, when there is no PIP signal when a PIP signal is selected and displayed on a PIP screen, a noise signal of a PIP signal path is displayed on a PIP screen or a synchronization signal is displayed. There was a problem that the abnormal signal is displayed, such as the screen appears to be out of sync with the PIP screen to feel the rejection when viewing the PIP screen.

따라서 종래의 문제점을 해결하기 위하여 본 발명은 선택된 피아이피 소오스신호의 동기유무를 동기검출부에서 검지하여 동기신호가 없으면 마이크로컴퓨터로 그 정보를 주어 피아이피처리부에서 출력되는 피아이피 색신호를 신호제어부에서 접지시켜 피아이피 화면을 블랙으로 뮤팅시켜 피아이피신호 처리의 품질을 높이도록 한다.Therefore, in order to solve the conventional problem, the present invention detects the synchronization of the selected PI source signal in the synchronization detecting unit, and if there is no synchronization signal, the information is given to the microcomputer to ground the PI color signal output from the PI processing unit in the signal control unit. By muting the PIP screen to black, the PIP signal processing quality is improved.

Description

티브이의 피아이피화면 뮤팅회로TV's PI Screen Muting Circuit

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

제1도는 종래 피아이피 기능이 내장된 티브이시스템 구성도, 제2도는 본 발명 티브이의 피아이피화면 뮤팅회로도, 제3도는 제2도에 있어서, 색신호제어부의 상세도, 제4도는 본 발명에 있어서 피아이피화면 뮤팅시 마이크로컴퓨터의 각 출력포트 제어흐름도, 제5도는 본 발명에 따른 무신호시 색신호제어부의 다른 실시예.1 is a block diagram of a TV system incorporating a conventional PIP function, FIG. 2 is a PIP muting circuit diagram of a TV of the present invention, FIG. 3 is a diagram showing a detail of a color signal controller, and FIG. Figure 5 is a flow chart of each output port control of the microcomputer during muting the PPI screen, Figure 5 is another embodiment of the non-signal color signal control unit according to the present invention.

Claims (3)

입력되는 제어신호에 따라 메인의 중간주파(IF) 처리부로부터 출력되는 티브이신호(TV)와 외부입력 단자로부터 입력되는복합영상신호(AV1)(AV2)중에서 어느하나를 선택하여 출력하는 선택스위칭부(11)와, 상기 선택스위칭부(11)를 통해 선택된피아이피(PIP)신호의 동기유무를 검출하는 동기검출부(15)와, 상기 선택스위칭부(11)로부터 선택된 신호와 피아이피화면의 출력위치를 결정하기 위한 메인의 수직/수평동기신호를 입력받아 신호처리를 행한뒤 색신호(R,G,B)와 블랭킹신호(FB)를 출력하는 피아이피 처리부(12)와, 제어신호에 따라 입력되는 색신호(R,G,B)를 전달하거나 차단하는 색신호제어부(13)와, 사용자의 선택 및 동기검출부(15)의 검출신호에 따라 선택스위칭부(11) 및 색신호제어부(13)를 제어하는 마이크로컴퓨터(16)와, 색신호제어부(13)로부터의 색신호(R,G,B)와 피아이피 처리부(12)로부터의 블랭킹신호(FB) 및 메인의 휘도(Y), 색차신호(U,V)에 따라 명암, 밝기, 색상, 색농도조정을 행하는 비디오 프로세서부(14)와, 이 비디오 프로세서부(14)로부터 출력되는 신호를 씨피티(CPT)(18)에 디스플레이 가능하도록 증폭하는 색신호증폭부(17)로 구성된 티브이의 피아이피(PIP)화면 뮤팅회로.A selection switching unit for selecting and outputting any one of a TV signal TV output from the main intermediate frequency IF unit and a composite video signal AV1 and AV2 input from an external input terminal according to an input control signal ( 11), a synchronization detection unit 15 for detecting the synchronization of the selected PIP signal through the selection switching unit 11, and an output position of the signal and the PIP screen selected from the selection switching unit 11; After receiving the main vertical / horizontal synchronization signal to determine the signal processing and outputting the color signal (R, G, B) and the blanking signal (FB) and the input processing according to the control signal 12 The color signal controller 13 for transmitting or blocking the color signals R, G, and B, and the micro controller controlling the selection switch unit 11 and the color signal controller 13 according to the detection signal of the user selection and synchronization detector 15. Color signals from the computer 16 and the color signal control unit 13 ( A video processor for adjusting the contrast, brightness, color, and color density in accordance with the blanking signal FB from the R, G, and B and the P processing unit 12, the luminance Y of the main, and the color difference signals U and V. PIP screen muting circuit comprising a unit 14 and a color signal amplifier unit 17 for amplifying a signal output from the video processor unit 14 so as to be displayed on the CPT 18. . 제1항에 있어서, 색신호제어부(13)는 피아이피 처리부(12)의 출력단을 저항(Ra)(Rb)에 병렬로 연결하고, 마이크로컴퓨터(16)의 출력포트(P4)를 저항(Rc)을 통해 트랜지스터(Q1)의 베이스에 연결하며, 상기 저항(Ra)(Rb)의 접속점은 상기 트랜지스터(Q1)의 콜렉터에 연결함과 아울러 콘덴서(Cc)를 통해 비디오 프로세서부(14)의 입력단에 연결하여 구성함을 특징으로 하는 티브이의 피아이피화면 뮤팅회로.2. The color signal control unit 13 connects the output terminal of the IP processing unit 12 to a resistor Ra (Rb) in parallel, and connects the output port P4 of the microcomputer 16 to the resistor Rc. Is connected to the base of the transistor Q1, and the connection point of the resistor Ra (Rb) is connected to the collector of the transistor Q1, and is connected to the input terminal of the video processor unit 14 through the capacitor Cc. PIP screen muting circuit of the TV, characterized in that by connecting. 제1항에 있어서, 색신호제어부(13)는 무신호시 마이크로컴퓨터(16)의 제어신호에 따라 피아이피 처리부(12)로부터 입력되는 원색신호중 하나의 색 또는 바이어스저항(R1)(R2)에 따른 복합의 색을 선택하여 출력할 수 있도록 함을 특징으로 하는티브이의 피아이피화면 뮤팅회로.2. The color signal control unit 13 according to claim 1, wherein the color signal control unit 13 according to the color of one of the primary color signals input from the IP processing unit 12 or the bias resistors R1 and R2 according to the control signal of the microcomputer 16 when there is no signal. The PI picture screen muting circuit, characterized in that to select and output the color of the complex. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930014914A 1993-07-31 1993-07-31 Sub-screen muting circuit in picture in picture television KR950015099B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930014914A KR950015099B1 (en) 1993-07-31 1993-07-31 Sub-screen muting circuit in picture in picture television

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930014914A KR950015099B1 (en) 1993-07-31 1993-07-31 Sub-screen muting circuit in picture in picture television

Publications (2)

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KR950004971A true KR950004971A (en) 1995-02-18
KR950015099B1 KR950015099B1 (en) 1995-12-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8500913B2 (en) 2007-09-06 2013-08-06 Micron Technology, Inc. Methods for treating surfaces, and methods for removing one or more materials from surfaces

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8500913B2 (en) 2007-09-06 2013-08-06 Micron Technology, Inc. Methods for treating surfaces, and methods for removing one or more materials from surfaces

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KR950015099B1 (en) 1995-12-21

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