KR940000412Y1 - Apparatus for switching between bightness and video signal - Google Patents
Apparatus for switching between bightness and video signal Download PDFInfo
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- KR940000412Y1 KR940000412Y1 KR2019880002619U KR880002619U KR940000412Y1 KR 940000412 Y1 KR940000412 Y1 KR 940000412Y1 KR 2019880002619 U KR2019880002619 U KR 2019880002619U KR 880002619 U KR880002619 U KR 880002619U KR 940000412 Y1 KR940000412 Y1 KR 940000412Y1
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- color signal
- detector
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/641—Multi-purpose receivers, e.g. for auxiliary information
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- Multimedia (AREA)
- Signal Processing (AREA)
- Processing Of Color Television Signals (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안에 따른 영상처리 블록구성도.1 is a block diagram of an image processing according to the present invention.
제2도는 제1도의 요부 상세회로도.2 is a detailed circuit diagram of the main part of FIG.
제3도는 제2도의 각부 파형도.3 is a waveform diagram of each part of FIG.
* 도면의 주요부분에 대한 부호의 설명.* Explanation of symbols for the main parts of the drawings.
3 : 색신호 검출부 2 : 색신호 제거부3: color signal detection unit 2: color signal removal unit
4 : 검파부 5 : 스위칭부4: detection part 5: switching part
6, 3, 58 : 대역통과 여파기 7 : 색신호 처리부6, 3, 58: bandpass filter 7: color signal processor
8 : 휘도신호 처리부 L1∼L5 : 코일8 luminance signal processor L1 to L5 coil
C1∼C9 : 콘덴서 R1∼R10 : 저항C1 to C9: capacitors R1 to R10: resistors
Q1∼Q3 : 트랜지스터 SW1∼SW4 : 스위치Q1 to Q3: Transistors SW1 to SW4: Switches
본 고안은 VCR의 슈퍼 VHS(Video Home System)방식에 관한것으로 특히 휘도신호의 입력과 복합신호의 입력을 자동으로 절환하도록 하는데 적당하도록 한 신호 자동 절환회로에 관한것이다.The present invention relates to a super VHS (Video Home System) method of the VCR, and more particularly to a signal automatic switching circuit suitable for automatically switching the input of the luminance signal and the input of the composite signal.
종래 VCR의 슈퍼 VHS방식에 있어서는 신호 절환회로의 구성이 휘도신호의 입력과복합신호의 입력을 기계적인 스위치에 의해 절환되도록 되어 있으므로 그 구성이 매우 복잡할뿐만 아니라 조작자에게 불편을 주는 등의 문제점이 있었다.In the super VHS method of the conventional VCR, since the configuration of the signal switching circuit is to switch the input of the luminance signal and the input of the composite signal by a mechanical switch, the configuration is not only complicated, but also causes inconvenience to the operator. there was.
이에 본 고안은 상기한 문제점을 개선시키기 위해 안출된 것으로써, 간단한 신호 절환회로를 연결구성시켜 휘도신호와 복합신호를 판별하여 자동으로 절환하도록 한 것으로, 이하 그의 기술구성을 첨부된 도면에 따라 설명하면 다음과 같다.Accordingly, the present invention was devised to improve the above problems, and a simple signal switching circuit is connected to configure the luminance signal and the composite signal to be automatically switched. Hereinafter, the technical configuration thereof will be described according to the accompanying drawings. Is as follows.
제1도는 본 고안에 따른 VCR에 있어 휘도신호와 복합신호 자동 절환 회로의 블록도를 나타낸 것으로 그의 연결구성을 살펴보면 안테나(ANT)와 연결된 튜너/TF단(1)의 출력은 라인 입력신호(Lin)와 함께 스위치(SW1)에서 스위칭되고, 스위치(SW1)의 출력은 휘도신호(Yin)가 일측으로 연결된 스위치(SW2)의 타일단에 인가되며 동시에 일측단으로 색신호(Cin)가 인가되고 기준단이 색신호 처리부(7)에 연결된 스위치(SW3)의 타측 일단에 인가되고, 상기 스위치(SW2)의 출력은 스위치(SW4)을 일측단으로 인가되는 동시에 색신호 제거부(2)를 통해 스위치(SW4)을 일측단으로 인가되는 동시에 색신호 제거부(2)를 통해 스위치(SW4)의 다른 측단으로 인가되며 스위치(SW2)의 출력은 색신호 검출부(3)와 검파부(4) 및 스위칭부(5)를 순차거쳐 스위치(SW4)를 제어하도록 구성하고, 상기 스위치(SW4)의 출력은 휘도신호 처리부(8)에 연결되는 구성이고, 상기 색신호 검출부(3)와 검파부(4) 및 스위칭부(5)의 상세구성도 제2도에서 보는 바와같이, 차동증폭용 트랜지스터(Q1, Q2), 저항(R1∼R7) 콘텐서(C1∼C4) 및 코일(L1)에 의한 출력이 코일(L2∼L5)과 콘덴서(C5∼C8)로 구성된 3.58 대역 통과여파기(6)에 인가되도록 구성한 색신호 검출부(3)의 출력은 다이오우드(D1)와 저항(R9) 및 콘덴서(C9)로 구성된 검파부(4)를 거쳐 트랜지스터(Q3)와 저항(R10)으로 구성된 스위칭부(5)로 인가되도록 구성되어 있다.1 is a block diagram of a luminance signal and a composite signal automatic switching circuit in a VCR according to the present invention. Looking at the connection configuration thereof, the output of the tuner / TF stage 1 connected to the antenna ANT is a line input signal (Lin). ) Is switched at the switch SW1, the output of the switch SW1 is applied to the tile end of the switch SW2 to which the luminance signal Yin is connected to one side, and at the same time, the color signal Cin is applied to the one end and the reference stage. The other end of the switch SW3 connected to the color signal processing unit 7 is applied to one end, and the output of the switch SW2 is applied to one end of the switch SW4 and at the same time the switch SW4 through the color signal removal unit 2. Is applied to one side and at the same time is applied to the other side of the switch (SW4) through the color signal removing unit (2) and the output of the switch (SW2) to the color signal detector (3), detector (4) and switching unit (5) Configured to control the switch SW4 in sequence, and the switch The output of SW4 is connected to the luminance signal processing section 8, and the detailed configuration of the color signal detecting section 3, the detecting section 4, and the switching section 5 is shown in FIG. 3.58 band pass filter whose output by the transistors Q1 and Q2, the resistors R1 to R7, the capacitors C1 to C4 and the coil L1 is composed of the coils L2 to L5 and the capacitors C5 to C8 ( The output of the color signal detection unit 3 configured to be applied to 6) is a switching unit composed of the transistor Q3 and the resistor R10 via a detector 4 composed of a diode D1, a resistor R9, and a capacitor C9. It is comprised so that it may apply to (5).
상기 회로구성의 동작상태 및 작용효과를 첨부된 도면에 따라 설명하면 다음과 같다.The operation state and effect of the circuit configuration will be described with reference to the accompanying drawings.
제2도에서 코일(L1)과 콘덴서(C1)는 전원부의 디커플링용이며, 입력신호(A)는 콘덴서(C2)를 지나 차동증폭용 트랜지스터(Q1)의 베이스에 연결되는데, 그 입력신호 휘도입력신호(Yin) 또는 합성신호이고 트랜지스터(Q1, Q2)는 차동증폭 앰프를 구성하며 저항(R3)은 정전류원 저항이다.In FIG. 2, the coil L1 and the capacitor C1 are for decoupling of the power supply, and the input signal A is connected to the base of the differential amplifying transistor Q1 through the capacitor C2. The signal Yin or a composite signal, the transistors Q1 and Q2 constitute a differential amplifier, and the resistor R3 is a constant current source resistor.
상기 트랜지스터(Q2)의 베이스에는 바이어스 저항(R4, R6)과 바이패스 콘덴서(C4)가 연결되어 있고, 콜렉터는 콘덴서(C3)와 저항(R7)을 거쳐 3.58 대역통과 여파기(6)에 연결되어 있고, 상기 3.58 대역통과 여파기(6)의 출력은 임피던스 매칭 저항(R8)에 연결되고, 그 신호는 검파부(4)에서 DC전압으로 변하여 스위칭부(5)의 트랜지스터(Q3)베이스에 연결되고, 트랜지스터(Q2)의 콜렉터는 저항(R10)과 연결되고, 트랜지스터(Q2)의 온/오프에 따라 로우/하이 신호가 제어신호로 출력된다. 여기서 입력 신호(A)가 합성신호인 경우에는 차동증폭 앰프의 출력인 C신호에서 휘도신호는 왜곡되지만 칼라신호 성분은 왜곡없이 증폭되어 3.58 대역통과 여파기(6)를 지나 검파부(4)에서 검파됨으로써 트랜지스터(Q3)의 베이스에는 하이(H)전압이 발생하게 된다.The bias resistors R4 and R6 and the bypass capacitor C4 are connected to the base of the transistor Q2, and the collector is connected to the 3.58 bandpass filter 6 through the capacitor C3 and the resistor R7. The output of the 3.58 bandpass filter 6 is connected to the impedance matching resistor R8, the signal of which is changed from the detector 4 to the DC voltage and is connected to the base of the transistor Q3 of the switching unit 5, The collector of the transistor Q2 is connected to the resistor R10 and a low / high signal is output as a control signal according to the on / off of the transistor Q2. If the input signal A is a synthesized signal, the luminance signal is distorted in the C signal, which is the output of the differential amplifier, but the color signal component is amplified without distortion, and is detected by the detector 4 through the 3.58 band pass filter 6. As a result, a high (H) voltage is generated at the base of the transistor Q3.
상기에 따라 트랜지스터(Q3)는 구동되어 콜렉터로 로우(L)상태의 신호가 출력되게 되고, 입력신호(A)가 휘도신호인 경우에는 트랜지스터(Q3)의 베이스전위가 로우(L)상태로 되므로 트랜지스터(Q3)는 오프되어 그의 콜렉터로 하이(H)상태의 신호가 출력되게 되는데, 이 출력된 신호는 스위치(SW4)의 제어출력으로 휘도신호 입력인 경우에는 색신호 제거 필터를 통과하지 않고 합성신호인 경우에만 색신호 제거필터를 통과하도록 제어하는 휘도(Y)/색신호(C) 제어신호 발생회로이다.According to the above, the transistor Q3 is driven to output a low L signal to the collector. When the input signal A is a luminance signal, the base potential of the transistor Q3 is turned low. Transistor Q3 is turned off so that the signal of high (H) state is outputted to its collector. This output signal is a control signal of switch SW4. Is a luminance (Y) / color signal (C) control signal generation circuit that controls to pass through the color signal removal filter only.
여기서 제3a도∼제3e도는 제2도의 각부 파형도이다.3A to 3E are waveform diagrams of respective parts of FIG. 2.
따라서 본 고안에 따른 휘도신호 및 복합신호 자동 절환회로는 이상의 설명에서와 같이 간단한 신호 절환회로를 연결구성시켜 휘도신호와 복합신호를 검파하여 자동으로 절환되도록 하므로써 기존의 기계적인 스위치에 의한 절환동작보다 편리하게 되며 보다 기술적인 효과를 갖게된다.Therefore, the luminance signal and the composite signal automatic switching circuit according to the present invention is connected to the simple signal switching circuit as described above to detect the luminance signal and the composite signal to be automatically switched by the switching operation by the conventional mechanical switch It is convenient and has a more technical effect.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019880002619U KR940000412Y1 (en) | 1988-02-29 | 1988-02-29 | Apparatus for switching between bightness and video signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019880002619U KR940000412Y1 (en) | 1988-02-29 | 1988-02-29 | Apparatus for switching between bightness and video signal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR890018416U KR890018416U (en) | 1989-09-09 |
| KR940000412Y1 true KR940000412Y1 (en) | 1994-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019880002619U KR940000412Y1 (en) | 1988-02-29 | 1988-02-29 | Apparatus for switching between bightness and video signal |
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| KR (1) | KR940000412Y1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100332621B1 (en) * | 1999-03-19 | 2002-04-17 | 곽정소 | Mix and switching circuit of video signal |
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1988
- 1988-02-29 KR KR2019880002619U patent/KR940000412Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
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| KR890018416U (en) | 1989-09-09 |
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