KR910006195Y1 - Burst flag pulse selection circuit - Google Patents
Burst flag pulse selection circuit Download PDFInfo
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- KR910006195Y1 KR910006195Y1 KR2019850012360U KR850012360U KR910006195Y1 KR 910006195 Y1 KR910006195 Y1 KR 910006195Y1 KR 2019850012360 U KR2019850012360 U KR 2019850012360U KR 850012360 U KR850012360 U KR 850012360U KR 910006195 Y1 KR910006195 Y1 KR 910006195Y1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
- H04N23/12—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths with one sensor only
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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
- H04N11/12—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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/44—Colour synchronisation
- H04N9/455—Generation of colour burst signals; Insertion of colour burst signals in colour picture signals or separation of colour burst signals from colour picture signals
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- Processing Of Color Television Signals (AREA)
Abstract
내용 없음.No content.
Description
제 1 도는 본 고안의 회로도이다.1 is a circuit diagram of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 발진회로 2 : 신호소오스발생집적회로1: oscillation circuit 2: signal source generation integrated circuit
3 : 3.58MHz트랩회로 4 : 스위칭회로부3: 3.58 MHz trap circuit 4: switching circuit portion
A : 신호소오스발생집적회로의 제1출력단A: first output terminal of the signal source generation integrated circuit
B : 신호소오스발생집적회로의 제2출력단B: second output terminal of the signal source generating integrated circuit
C1,C2 : 콘덴서 L1 : 인덕터C1, C2: Capacitor L1: Inductor
R1,R2 : 저항 TR1 : NPN형 트랜지스터R1, R2: Resistor TR1: NPN transistor
TR2 : PNP형 트랜지스터 B-Y, R-Y : 색차신호단TR2: PNP transistor B-Y, R-Y: Color difference signal terminal
[산업상의 이용분야][Industrial use]
본 고안은 PAL과 NTSC겸용 비데오카메라의 버스트플렉펄스(Burst Flag Puls)선택회로에 관한 것으로, 특히 신호소오스발생집적회로에 3.58MHz와 4.43MHz의 발진회로를 접속시켜 버스트플랙펄스를 분리된 색차신호단(R-Y,B-Y)에 인가시킴으로써 PAL과 NTSC방식의 비데오카메라로 겸용할 수 있도록 된 PAL과 NTSC 겸용 비데오카메라의 버스트플랙펄스선택회로에 관한 것이다.The present invention relates to a burst flag pulse selection circuit of a PAL and NTSC video camera. In particular, the burst flag pulse is separated into a color difference signal by connecting an oscillating circuit of 3.58 MHz and 4.43 MHz to a signal source generation integrated circuit. The present invention relates to a burst flag pulse selection circuit of a PAL and NTSC video camera that can be used as a PAL and NTSC video camera by being applied to stages (RY, BY).
[종래의 기술 및 그 문제점][Traditional Technology and Problems]
일반적으로, 컬러텔레비젼 전송방식은 NTSC(National Television System Committee)와 PAL (Phase Alternation by Line)및 SECAM(sequen-ce de couleurs abee memoire : 기억병용색순차방식) 등으로 대별된다.In general, color television transmission methods are classified into NTSC (National Television System Committee), PAL (Phase Alternation by Line) and SECAM (sequen-ce de couleurs abee memoire).
비데오카메라는 텔레비젼수상기와 반대로 풍경이나 인물 등의 화상을 전기신호인 비데오신호로 변환시키는 장치로서, 정해진 델레비젼전송 방식에 따라 상기 방식 중 한개의 방식을 선택하게 된다.A video camera is a device for converting an image such as a landscape or a person into a video signal, which is an electric signal, as opposed to a television set, and selects one of the above methods according to a predetermined TV transmission method.
그런데, 종래의 비데오카메라는 PAL방식이나 NTSC방식에 따라 필요한 신호(R, G, B)를 송출하는 신호소오스발생집적회로에서 버스트 플랙펄스를 송출하여 색차신호단인 B-Y나 R-Y에 고정적으로 인가시키도록 되어 있었다. 따라서, 종래에는 PAL방식과 NTSC빙식의 신호소오스 발생집적회로와 그 주변회로가 각각 필요하게 되어 비데오카메라의 부피가 커지게 됨과 더불어 가격이 상승하게 되는 문제점이 있었다.However, conventional video cameras transmit burst flag pulses in a signal source generation integrated circuit that transmits signals R, G, and B necessary according to a PAL method or an NTSC method, and fixedly apply them to the color difference signal BY or RY. It was supposed to be. Therefore, conventionally, a signal source generation integrated circuit and a peripheral circuit of the PAL method and the NTSC ice type are required, respectively, thereby increasing the volume of the video camera and increasing the price.
[고안의 목적][Purpose of designation]
이에 본 고안은 상기와 같은 문제점을 해결하기 위해 이루어진 것으로, PAL방식과 NTSC방식을 겸용할 수 있도록 신호소오스 발생 집적 회로에 3.58MHz트랩과 스위칭회로부를 접속시킴과 더불어 상기 방식에 맞는 발진회로를 접속시킴으로써, PAL방식이 선택되면 색차신초단인 R-Y에 버스트플랙펄스가 공급되고, NTSC방식이 선택되면 색차신호단인 B-Y에 버스트플랙펄스가 공급되도록 된 PAL과 NTSC겸용 비데오카메라의 버스트플랙펄스선택회로를 제공하고자 함에 그 목적이 있다.In order to solve the above problems, the present invention is designed to connect a 3.58 MHz trap and a switching circuit part to a signal source generating integrated circuit so that the PAL method and the NTSC method can be used as well. When the PAL method is selected, the burst flag pulse is supplied to the RY, which is the new color-difference stage, and when the NTSC method is selected, the burst flag pulse selection circuit of the PAL and NTSC video cameras is to supply the burst flag pulse to BY, the color difference signal terminal. The purpose is to provide.
[고안의 구성][Composition of design]
상기한 목적을 달성하기 위한 본 고안의 PAL과 NTSC겸용 비데오카메라의 버스트플랙펄스선택회로는, NTSC방식 및 PAL방식의 기본컬러반송파인 3.58MHz및 4.43MHz를 생성하기 위한 발진회로가 접속됨과 더불어 버스트플랙펄스가 출력되는 제1출력단과 상기 기본컬러반송파가 출력되는 제2출력단을 구비한 신호소오스발생집적회로와, 인덕터와 콘덴서로 이루어져 상기 신호소오스발생집적회로의 제2출력단에 접속되어 상기 3.58MHz의 기본컬러반송파를 트랩핑 (trapping)하는 3.58MH트랩회로 및 트랜지스터와 저항 및 콘덴서로 이루어져 상기 신호소오스발생집적회로의 상기 제2출력단으로부터 3.58MHz의 신호가 출력될 경우에는 색차신호단(B-Y)에 상기 신호소오스발생집적회로의 상기 제1출력단으로부터 출력되는 버스트플랙펄스를 공급하는 한편 상기 신호소오스발생집적회로의 상기 제 2출력단으로부터 4.43MHz의 신호가 출력될 경우에는 색차신호단(R-Y)에 상기 신호소오스발생집적회로의 상기 제 1 출력단으로부터 출력되는 버스트플랙펄스를 공급하도록 된 스위칭회로부로 구성된 것을 특징으로 한다.In order to achieve the above object, the burst flag pulse selection circuit of the PAL and NTSC video camera of the present invention has an oscillation circuit connected to generate 3.58MHz and 4.43MHz, which are the basic color carriers of the NTSC and PAL methods. A signal source generating integrated circuit having a first output terminal for outputting a pulse pulse and a second output terminal for outputting the basic color carrier; and an inductor and a condenser connected to a second output terminal of the signal source generating integrated circuit; 3.58MH trap circuit for trapping the basic color carriers of the transistor, a transistor and a resistor and a capacitor, when a signal of 3.58MHz is output from the second output terminal of the signal source generation integrated circuit, Supplying a burst flag pulse output from the first output terminal of the signal source generation integrated circuit to the signal source generator When a signal of 4.43 MHz is output from the second output terminal of the integrated circuit, a switching circuit unit configured to supply a burst flag pulse output from the first output terminal of the signal source generation integrated circuit to the color difference signal terminal RY. It features.
[실시예]EXAMPLE
이하, 도면을 참조하여 본 고안의 PAL과 NTSC겸용 비데오카메라의 버스트플랙펄스선택회로를 상세히 설명한다.Hereinafter, the burst flag pulse selection circuit of the PAL and NTSC video camera of the present invention will be described in detail with reference to the accompanying drawings.
제 1 도는 본 고안의 PAL과 NTSC겸용 비데오카메라의 버스트플랙펄스선택회로의 회로도이다.1 is a circuit diagram of a burst flag pulse selection circuit of a PAL and NTSC video camera of the present invention.
동도면에 있어서, 참조부호 1은 발진회로이고, 2는 신호소오스발생 집적회로이며. A및 B는 상기 신호소오스발생집적회로(2)의 제1출력단 및 제2출력단이다. 상기 제 2 출력단(B)에는 인덕터(L1)와 콘덴서(C1)로 구성된 3.58MHz트랩회로(3)가 접속됨과 더불어 NPN형 트랜지스터(TR1)의 베이스가 접속되어 있다. 여기서, 상기 3.58MHz트랩회로(3)는 3.58MHz의 신호를 트랩핑하고 4.43MHz의 신호를 통과시키는 회로, 즉 일종의 필터역활을 하는 회로로서, 동도면에서는 도면의 간단화를 위해 그 등가회로를 도시하였다.In the figure, reference numeral 1 is an oscillating circuit, and 2 is a signal source generating integrated circuit. A and B are the first output terminal and the second output terminal of the signal source generation integrated circuit 2. A 3.58 MHz trap circuit 3 composed of an inductor L1 and a capacitor C1 is connected to the second output terminal B, and a base of the NPN transistor TR 1 is connected. Here, the 3.58 MHz trap circuit 3 is a circuit for trapping a 3.58 MHz signal and passing a 4.43 MHz signal, that is, a kind of filter. In the same figure, the equivalent circuit is provided for simplicity of the drawings. Shown.
한편, NPN형 트랜지스터(TR1)의 콜렉터는 상기 신호소오스발생집적회로(2)의 제1출력단(A)에 접속되어있고, 그 에미터는 접속점(N)에 접속되어 있다. 이 접속점(N)과 접지간에는 저항(R1)과 평활용 콘덴서 (C2)가 접속되어 있고, 상기 접속점(N)에는 PNP형 트랜지스터(TR2)의 베이스와 색차신호단(R-Y)이 접속되어 있다. 또한, 상기 PNP형 트랜지스터(TR2)의 에미터는 상기 신호소오스발생집적회로(2)의 제1출력단(A)에 접속되어 있고, 그 콜렉터는 색차신호(B-Y)에 접속됨과 더불어 저항(R2)을 매개하여 접지되어 있다.On the other hand, the collector of the NPN transistor TR 1 is connected to the first output terminal A of the signal source generation integrated circuit 2, and the emitter is connected to the connection point N. The resistor R1 and the smoothing capacitor C2 are connected between the connection point N and the ground, and the base of the PNP transistor TR2 and the color difference signal terminal RY are connected to the connection point N. The emitter of the PNP transistor TR2 is connected to the first output terminal A of the signal source generation integrated circuit 2, and the collector is connected to the color difference signal BY, and the resistor R2 is connected to the emitter R2. It is grounded by every means.
먼저, PAL과 NTSC 겸용 비데오카메라를 NTSC방식으로 선택하게 되면, 발진회로(1)가 NTSC 방식의 기본컬러반송파인 3.58MHz를 발진하게 된다. 그리고, 이 발진회로(1)가 신호소오스발생집적회로(2)에 접속되어 있으므로 신호소오스발생집적회로(2)의 제2출력단(B)으로부터 3.58MHzZ의 신호가 출력되게 된다. 이 경우에는 이 3.58MHz의 신호가 인덕터(L1)와 콘덴서(C1)로 이루어진 3.58MHz트랩회로(3)에서 트랩핑되게 되므로 NPN형 트랜지스터(TR1)는 오프상태로 되고, PNP형 트랜지스터(TR2)는 온상태로 되게 된다. 그에 따라, 신호소오스발생집적회로(2)의 제1출력단(A)으로부터의 버스트플랙펄스가 색차신호단(B-Y)으로 공급되게 된다.First, when the PAL and NTSC video camera are selected as the NTSC method, the oscillation circuit 1 oscillates 3.58 MHz, which is the basic color carrier of the NTSC method. Since the oscillation circuit 1 is connected to the signal source generation integrated circuit 2, a signal of 3.58 MHzZ is outputted from the second output terminal B of the signal source generation integrated circuit 2. In this case, the 3.58 MHz signal is trapped in the 3.58 MHz trap circuit 3 composed of the inductor L1 and the capacitor C1, so that the NPN transistor TR1 is turned off, and the PNP transistor TR2 is turned off. Will be turned on. Accordingly, the burst flag pulses from the first output terminal A of the signal source generation integrated circuit 2 are supplied to the color difference signal terminals B-Y.
따라서, 버스트플랙펄스가 수평동기신호를 기준으로 하여 180°지점에 생기게 되므로, 비데오카메라는 NTSC 방식으로 사용될 수 있게 된다.Therefore, since the burst flag pulse is generated at 180 ° based on the horizontal synchronization signal, the video camera can be used in the NTSC method.
다음으로, PAL과 NTSC겸용 비데오카메라를 PAL방식으로 선택하게 되면, 발진회로(1)가 PAL방식의 기본컬러반송파인 4.43MHz를 발진하게 된다. 그리고, 이 발진회로(1)가 신호소오스발생집적회로(2)에 접속되어 있으므로 신호소오스발생집적회로(2)의 제2출력단(B)으로부터 4.43MHz의 신호가 출력되게 된다. 즉, 이 경우에는 이 4.43MHz의 신호가 3.58MHz트랩(3)에 의해 트랩핑되지 않고 NPN형 트랜지스터(TR1)의 베이스에 공급되게 된다. 따라서, NPN형 트랜지스터(TR1)가 온,오프상태를 계속적으로 반복하게 되는데, 이 파형은 콘덴서(C1)에 의해 평활화되어 PNP형 트랜지스터(TR2)의 베이스에 "하이"레벨의 신호로서 공급되게 된다.Next, when the PAL and NTSC video cameras are selected as the PAL method, the oscillation circuit 1 oscillates 4.43 MHz, which is a basic color carrier of the PAL method. Since the oscillation circuit 1 is connected to the signal source generation integrated circuit 2, a signal of 4.43 MHz is output from the second output terminal B of the signal source generation integrated circuit 2. That is, in this case, the 4.43 MHz signal is supplied to the base of the NPN transistor TR1 without being trapped by the 3.58 MHz trap 3. Therefore, the NPN transistor TR1 is repeatedly turned on and off. The waveform is smoothed by the capacitor C1 and supplied as a "high" level signal to the base of the PNP transistor TR2. .
그에 따라, 상기 PNP형 트랜지스터(TR2)가 계속해서 오프상태를 유지하게 되므로, 상기 신호소오스발생집적회로(2)의 제1출력단(A)으로부터의 버스트플랙펄스는 색차신호단(R-Y)으로 공급되게 된다. 따라서, 버스트플랙펄스가 수평동기신호를 기준으로 하여 135°, 225°지점에 생기게 되므로, 비데오카메라는 PAL 방식으로 사용될 수 있게 되는 것이다As a result, the PNP transistor TR2 is kept in the OFF state, so that the burst flag pulse from the first output terminal A of the signal source generation integrated circuit 2 is supplied to the color difference signal terminal RY. Will be. Therefore, since the burst flag pulse is generated at 135 ° and 225 ° based on the horizontal synchronization signal, the video camera can be used in the PAL method.
[고안의 효과][Effect of design]
상기한 바와 같이 본 고안은 분리된 색차신호단인 R-Y과 B-Y단에 동시에 본 고안의 출력단을 연결하여 PAL방식으로 사용할 때에는 R-Y단으로 신호소오스발생집적회로의 버스트플랙펄스를 공급하고, NTSC방식으로 사용할 때에는 B-Y단으로 신호소오스발생집적회로의 버스트플랙펄스를 공급할 수 있으므로 PAL과 NTSC 겸용으로 비데오카메라를 사용할 수 있게 된다.As described above, the present invention provides the burst flag pulse of the signal source generation integrated circuit to the RY stage when the output terminal of the present invention is connected to the RY and BY stages, which are separated color difference signal stages, in the PAL method. When used, the video signal can be used for both PAL and NTSC because the burst flag pulse of the signal source generation integrated circuit can be supplied to the BY stage.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR2019850012360U KR910006195Y1 (en) | 1985-09-24 | 1985-09-24 | Burst flag pulse selection circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019850012360U KR910006195Y1 (en) | 1985-09-24 | 1985-09-24 | Burst flag pulse selection circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
KR870006037U KR870006037U (en) | 1987-04-25 |
KR910006195Y1 true KR910006195Y1 (en) | 1991-08-19 |
Family
ID=19245480
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2019850012360U KR910006195Y1 (en) | 1985-09-24 | 1985-09-24 | Burst flag pulse selection circuit |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR910006195Y1 (en) |
-
1985
- 1985-09-24 KR KR2019850012360U patent/KR910006195Y1/en not_active IP Right Cessation
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Publication number | Publication date |
---|---|
KR870006037U (en) | 1987-04-25 |
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