KR890001357Y1 - Broadcasting selection circuit of pal and ntsc - Google Patents

Broadcasting selection circuit of pal and ntsc Download PDF

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Publication number
KR890001357Y1
KR890001357Y1 KR2019850016417U KR850016417U KR890001357Y1 KR 890001357 Y1 KR890001357 Y1 KR 890001357Y1 KR 2019850016417 U KR2019850016417 U KR 2019850016417U KR 850016417 U KR850016417 U KR 850016417U KR 890001357 Y1 KR890001357 Y1 KR 890001357Y1
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South Korea
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ntsc
pal
terminal
resistor
switching circuit
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KR2019850016417U
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Korean (ko)
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KR870011657U (en
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김귀동
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삼성전자 주식회사
정재은
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
    • H04N11/20—Conversion of the manner in which the individual colour picture signal components are combined, e.g. conversion of colour television standards
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
    • H04N11/12—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only
    • H04N11/14—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system
    • H04N11/16—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system the chrominance signal alternating in phase, e.g. PAL-system

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

Abstract

내용 없음.No content.

Description

PAL 및 NTSC방식의 방송 선택 회로PAL and NTSC broadcast selection circuit

제1도는 본 고안의 블럭도.1 is a block diagram of the present invention.

제2도는 본 고안의 회로도.2 is a circuit diagram of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 비데오 신호 딜레이 라인 2 : PAL 색 신호부1: video signal delay line 2: PAL color signal unit

3 : 버퍼 4 : NTSC색 신호부3: buffer 4: NTSC color signal part

5 : 스위칭 회로부 6 : 판별부5: switching circuit part 6: discriminating part

Q1~Q3: 트랜지스터 R1~R9: 저항Q 1 to Q 3 : Transistors R 1 to R 9 : Resistance

C1~C4: 콘덴서 L1, L2: 코일C 1 to C 4 : condenser L 1 , L 2 : coil

D : 다이오드 Vc : 전원단자D: Diode Vc: Power Terminal

CS : 복합신호단자 VS : 수직 주파수 단자CS: Composite signal terminal VS: Vertical frequency terminal

본 고안은 PAL(Phase Alternation by Line) 방식과 NTSC(National Televtstion System Committee) 방식의 두 방송을 스위칭 회로를 이용하여 선택할 수 있게 함으로서 PAL방송과 NTSC방송이 인접해 있을때 어느 방식의 방송이나 쉽게 선택하여 시청할 수 있게한 것에 목적을 둔 PAL 및 NTSC방식의 방송 선택 회로에 관한 것이다.The present invention makes it possible to select two broadcasts, PAL (Phase Alternation by Line) and NTSC (National Televtstion System Committee), by using a switching circuit. The present invention relates to a PAL and NTSC broadcast selection circuit whose purpose is to enable viewing.

종래에는 PAL방식의 방송을 수신할 수 있는 텔레비죤은 PAL방송만 수신할 수 있으며 또한 NTSC방식의 방송을 수신할 수 있는 텔레비죤은 NTSC방송만 수신할 수 있게되어 있으므로서 PAL방송과 NTSC방송을 같이 송신하는 국가나 인접 국가의 방송을 함께 수신하기 위해서 각기 다른 방식(PAL, NTSC)의 수신기를 사용하여야만 수신할 수 있는 결점이 있었다.Conventionally, a television capable of receiving PAL broadcasts can only receive PAL broadcasts, and a television capable of receiving NTSC broadcasts can only receive NTSC broadcasts, thus transmitting both PAL and NTSC broadcasts. In order to receive broadcasts from other countries or neighboring countries together, it was necessary to use receivers of different methods (PAL, NTSC).

본 고안은 상기와 같은 결점을 해결하고자 한 텔레비죤을 이용하여 PAL방송과 NTSC방송을 수신할 수 있게한 것으로 이를 첨부 도면 제2도에 따라서 상세히 설명하면 다음과 같다.The present invention enables the reception of PAL broadcasts and NTSC broadcasts using a television to solve the above drawbacks. This will be described in detail with reference to FIG. 2 as follows.

복합 신호 입력 단자(CS)에서 저항(R1)과 비데오 신호 라인(1)을 거쳐서 저항(R2)과 콘덴서(C1, C2) 및 코일(L1)을 연결한 PAL색 신호부(2)를 통하여 이의 단자와 전원 입력 단자에 트랜지스터(Q1)와 저항(R3, R4)을 연결한 버퍼부(3)에 연결하여서 이의 단자에서 저항(R5)과 콘덴서(C3, C4) 및 코일(L2)을 접속하여서 된 NTSC색 신호부(4)에 연결하며 트랜지스터(Q2, Q3)와 저항(R6~R9)을 연결한 스위칭 회로부(5)를 통해 판별 집적회로부(6)에 연결하고 전원 입력단자(Vc)에서 다이오드(D)를 통해 스위칭 회로부(5)의 트랜지스터(Q3)의 에미터측에 연결하고 판별 집적회로부(6)에 수직 주파수 단자(VS)에 연결하여서된 것이다.PAL color signal part connecting the resistor (R 2 ), the capacitor (C 1 , C 2 ) and the coil (L 1 ) from the composite signal input terminal (CS) via the resistor (R 1 ) and the video signal line (1). 2) is connected to the buffer portion (3) connecting transistor (Q 1 ) and resistors (R 3 , R 4 ) to its terminal and power input terminal through the resistor (R 5 ) and capacitor (C 3 , C 4 ) and the coil (L 2 ) are connected to the NTSC color signal part 4 connected, and through the switching circuit part 5 which connects the transistors Q 2 , Q 3 and the resistors R 6 to R 9 . Connected to the discrimination integrated circuit section 6 and connected to the emitter side of the transistor Q 3 of the switching circuit section 5 through the diode D at the power supply input terminal Vc, and a vertical frequency terminal ( VS).

제1도는 본 고안의 동작 상태를 설명하기 위한 블록도이다.1 is a block diagram for explaining an operating state of the present invention.

이와 같은 회로로서 구성된 본 고안의 동작 및 작용효과를 설명하면 다음과 같다.Referring to the operation and effect of the present invention configured as such a circuit is as follows.

제1도는 본 고안의 블록도로서 복합신호(Composite Signal)가 입력되면 비데오 신호 딜레이 라인(1)을 거쳐 4.43 MHZ의 PAL색 신호 캐리어 주파는 트랩(2)을 거쳐 버퍼(3)를 통하여 3, 58MHZ의 NTSC색 신호 캐리어주파수 트랩(4)에 도달하게 된다. 이 3, 58MHZ의 트랩은 스위칭 트랜지스터(Q1, Q2)에 의하여 온, 오프 되며 3, 58MHZ(NTSC)와 4, 43MHZ(PAL)를 선택하게된다.FIG. 1 is a block diagram of the present invention, when a composite signal is input, the PAL signal carrier frequency of 4.43 MHZ through the video signal delay line 1 is passed through the trap 2, The NTSC color signal carrier frequency trap 4 of 58 MHZ is reached. The 3, 58MHZ traps are turned on and off by the switching transistors Q 1 and Q 2 to select 3, 58MHZ (NTSC) and 4, 43MHZ (PAL).

수직(수평) 주파수를 사용하여 수직 50HZ, 60HZ(수평 15625HZ, 15750HZ)를 구분하여 출력 전압이 수직 50HZ(수평 15625HZ)일때 하이가 되고 수직 60HZ(수평 15750HZ)일때 로우가 되어서 스위칭 회로부(5)에서 NTSC색신호(3,58MHZ트랩)를 온, 오프하여 PAL과 NTSC의 칼라 트랩을 자동 절환 방법으로서 실시예를 들어 설명하면,The vertical (horizontal) frequency is used to distinguish between vertical 50HZ and 60HZ (horizontal 15625HZ, 15750HZ) and goes high when the output voltage is vertical 50HZ (horizontal 15625HZ) and low when vertical 60HZ (horizontal 15750HZ) so that the switching circuit section 5 When the NTSC color signal (3,58MHZ trap) is turned on and off and the color trap of PAL and NTSC is automatically switched as an example,

[실시예 1]Example 1

신호가 입력될 경우 수직 주파수 50HZ(수평 15625HZ)가 판별 집적회로(6)에 의하여 출력이 하이가 되면 스위칭 회로(5)의 트랜지스터(Q2, Q3)는 오프되어 3, 58MHZ의 NTSC색 신호 제거 회로 트랩을 동작하지 않고 다만 복합 신호가 4, 43MHZ의 PAL색 신호를 거쳐 버퍼(3)를 통해 출력측에 나타나게 된다.When the signal is input, when the vertical frequency 50HZ (horizontal 15625HZ) becomes high by the discriminating integrated circuit 6, the transistors Q 2 and Q 3 of the switching circuit 5 are turned off to NTSC color signals of 3 and 58 MHz. Without the elimination circuit trap being operated, the composite signal appears on the output side through the buffer 3 via the PAL color signals of 4 and 43 MHz.

[실시예 2]Example 2

NTSC 신호가 입력될때는 수직 주파수 60HZ(수평 15750HZ)가 판별 집적회로 (6)에 의하여 출력이 로우가 되어 스위칭 회로(5)의 트랜지스터(Q2,Q3)는 온되면서 3, 58MHZ의 NTSC색 신호 트랩이된다.When the NTSC signal is input, the vertical frequency 60HZ (horizontal 15750HZ) is turned low by the discriminating integrated circuit 6 so that the transistors Q 2 and Q 3 of the switching circuit 5 are turned on, and NTSC colors of 3 and 58MHZ are turned on. Become a signal trap.

또한 복합 신호는 4.43MHZ의 PAL색 신호 트랩을 거쳐서 버퍼(3)를 통해 3. 58MHZ의 NTSC색 신호 트랩이 출력되게된다.In addition, the composite signal is passed through the PAL color signal trap of 4.43MHZ, and the NTSC color signal trap of 3.58MHZ is output through the buffer 3.

이때 NTSC색 신호에서 4. 43MHZ의 트랩은 음성(4.5MHZ)과 거의 같기 때문에 트랩이 되더라도 영향을 받지 않는다.In this NTSC color signal, the trap of 4.43MHZ is almost the same as negative (4.5MHZ).

이와 같이 본 고안은 PAL 방송과 NTSC 방송을 같이 수신할 수 있도록 스위칭 회로를 이용하여 한 텔레비죤을 가지고서 PAL 방송과 NTSC 방송을 수신할 수 있는 매우 이상적인 것이다.As such, the present invention is very ideal for receiving PAL and NTSC broadcasts with one television using a switching circuit to receive PAL and NTSC broadcasts together.

Claims (1)

복합 신호 입력 단자(CS)에서 저항(R1)과 비데오 신호라인(1)을 거쳐서 저항(R2)과 콘덴서(C1, C2) 및 코일(L1)을 연결한 PAL색 신호부(2)를 통하여 이의 단자와 전원 입력단자에 트랜지스터(Q1)와 저항(R3, R4)을 연결한 버퍼부(3)에 연결하여서 이의 단자에서 저항(R5)과 콘덴서(C3, C4) 및 코일(L2)을 접속하여서된 NTSC색 신호부(4)에 연결하며 트랜지스터(Q2, Q3)와 저항(R6~R9)을 연결한 스위칭 회로부(5)를 통해 판별 집적회로부(6)에 연결하고 전원 입력단자(Vc)에서 다이오드(D)를 통해 스위칭 회로부(5)의 트랜지스터(Q3)의 에미터측에 연결하고 판별 집적회로부(6)에 수직 주파수 단자(VS)에 연결하여서된 PAL 및 NTSC방식의 방송 선택 회로.PAL color signal unit connecting the resistor R 2 , the capacitors C 1 , C 2 , and the coil L 1 through the resistor R 1 and the video signal line 1 at the composite signal input terminal CS ( 2) connects the resistor (R 5 ) and the capacitor (C 3 ,) at the terminal thereof by connecting to the buffer portion 3 connecting the transistor (Q 1 ) and the resistors (R 3 , R 4 ) to its terminal and power input terminal. C 4 ) and the coil (L 2 ) are connected to the NTSC color signal part 4 connected, and through the switching circuit part 5 which connects the transistors Q 2 , Q 3 and the resistors R 6 to R 9 . Connected to the discrimination integrated circuit section 6 and connected to the emitter side of the transistor Q 3 of the switching circuit section 5 through the diode D at the power supply input terminal Vc, and a vertical frequency terminal ( PAL and NTSC broadcast selection circuit connected to VS).
KR2019850016417U 1985-12-09 1985-12-09 Broadcasting selection circuit of pal and ntsc KR890001357Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019850016417U KR890001357Y1 (en) 1985-12-09 1985-12-09 Broadcasting selection circuit of pal and ntsc

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Application Number Priority Date Filing Date Title
KR2019850016417U KR890001357Y1 (en) 1985-12-09 1985-12-09 Broadcasting selection circuit of pal and ntsc

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KR870011657U KR870011657U (en) 1987-07-18
KR890001357Y1 true KR890001357Y1 (en) 1989-03-31

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KR2019850016417U KR890001357Y1 (en) 1985-12-09 1985-12-09 Broadcasting selection circuit of pal and ntsc

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KR870011657U (en) 1987-07-18

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