KR930001004Y1 - Circuit for stopping vtr recording - Google Patents
Circuit for stopping vtr recording Download PDFInfo
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- KR930001004Y1 KR930001004Y1 KR2019870020619U KR870020619U KR930001004Y1 KR 930001004 Y1 KR930001004 Y1 KR 930001004Y1 KR 2019870020619 U KR2019870020619 U KR 2019870020619U KR 870020619 U KR870020619 U KR 870020619U KR 930001004 Y1 KR930001004 Y1 KR 930001004Y1
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Abstract
내용 없음.No content.
Description
첨부도면은 본 고안의 회로도.The accompanying drawings are circuit diagrams of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 동기분리회로 2 : 수직동기신호부1: Sync separation circuit 2: Vertical sync signal part
3 : 카운터 4 : 수평동기신호부3: counter 4: horizontal synchronous signal part
TR : 트랜지스터 R1-R4: 저항TR: Transistor R 1- R 4 : Resistor
D1: 다이오드 REC : 녹화단자D 1 : Diode REC: Recording Terminal
본 고안은 VTR의 녹화중지회로에 관한 것으로서, 특히 녹화시 영상신호(Vide Signal)가 없을때 녹화를 중지시킬 수 있도록 하므로서, 테이프를 경제적으로 사용할 수 있게하고, 사용자의 편의를 제공하고자 한것에 주안점을 둔 것이다.The present invention relates to the recording stop circuit of the VTR, and in particular, it is possible to stop recording when there is no video signal (Vide Signal) during recording, so that the tape can be used economically and the user's convenience is to be provided. It is put.
종래에는 녹화중지회로가 없으므로서 영상신호가 없을 때에도 테이프는 잡음신호등을 녹화하게 되므로서 불필요하게 테이프를 소모시키게 된다.In the prior art, since there is no recording stop circuit, even when there is no video signal, the tape records noise signals and the like, thereby consuming tapes unnecessarily.
즉 T-120 테이프에 여러개의 극을 녹화할때 재생중인 테이프가 T-30이고 녹화테이프가 T-120인 경우 재생테이프가 T-30 이므로 재생이 끝난 상태에서 녹화테이프는 계속 녹화를 하므로서 녹화 테이프를 불필요하게 소모시키게 되어 사용자는 경제적 손실을 보게 된다.In other words, when recording multiple poles on a T-120 tape, if the tape being played is T-30 and the recording tape is T-120, the playback tape is T-30. Is consumed unnecessarily, and the user suffers an economic loss.
또한 사용자는 녹화테이프의 불필요한 소모를 방지하게 하기 위해서는 재생테이프의 시간과 녹화테이프의 시간에 맞추어서 VTR을 조작시켜야만 되는 사용상의 불편이 다르는 문제점을 가지게 되었다.In addition, in order to prevent unnecessary consumption of the recording tape, the user has a problem in that the inconvenience of using the operation of the VTR in accordance with the time of the recording tape and the recording tape is different.
본 고안은 상기와 같은 종래의 문제점을 해결하고자 녹화시에 영상입력 신호를 판별하여 영상입력신호가 있을시에는 녹화를 수행하게 하고 영상입력신호가 없을시에는 녹화를 중지하게 하므로서, 사용자의 편의를 제공하고 불필요하게 녹화 테이프를 소모하는 것을 방지할 수 있게한 것을 목적을 둔 것으로서, 이를 첨부 도면에 따라서 설명하면 다음과 같다.The present invention is to solve the conventional problems as described above by determining the video input signal during recording to perform recording when there is a video input signal, and to stop recording when there is no video input signal, the user's convenience It is an object of the present invention to provide and to prevent unnecessary consumption of the recording tape, which will be described according to the accompanying drawings.
동기분리회로(1)의 출력을 수직동기신호부(2)와 수평동기신호부(4)에 입력시켜서, 수직동기신호부(2)의 출력에서 저항(R1)과 콘덴서(C1)를 거쳐 카운터(3)의 리셋트단자(RS)에 접속하고, VTR의 드럼에 발생하는 헤드 스위칭신호는 입력신호단자(in)에서 다이오드(D1)를 거쳐 출력단자(out)와 카운터(3)의 클럭단자(ck)에 연결하고, 카운터(3)의 출력단자(Q)를 트랜지스터(TR)의 바이어스 저항(R2,R3)에 연결하고, 이 트랜지스터(TR)의 콜렉터에 녹화신호단자(REC)에 접속된 저항(R4)과 출력단자(out)에 연결하여서 된 것이다.The output of the synchronous separation circuit 1 is input to the vertical synchronous signal section 2 and the horizontal synchronous signal section 4 so that the resistor R 1 and the capacitor C 1 are output from the output of the vertical synchronous signal section 2. Connected to the reset terminal RS of the counter 3, and the head switching signal generated in the drum of the VTR is output from the input signal terminal in via the diode D 1 to the output terminal out and the counter 3; Is connected to the clock terminal ck of the transistor 3, the output terminal Q of the counter 3 is connected to the bias resistors R 2 and R 3 of the transistor TR, and the recording signal terminal is connected to the collector of this transistor TR. This is connected to the resistor (R 4 ) and the output terminal (out) connected to the (REC).
이와같은 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.
먼저 도면에서와 같이 출력단자(out)의 신호는 VTR의 동작을 제어하는 동시생략된 마이크로 프로세서에 전달되어 VTR의 동작(특히 기록을 중단 하는것)을 제어하게 되며, 또한 VTR의 드럼회전시에 발생되는 헤드스위칭 신호가 입력되는 입력단자(IN)의 신호와 동기분리회로(1)를 거쳐 분리된 수직동기신호부(2)의 수직동기신호가 카운터(3)에 입력된다. 입력단자(IN)의 신호가 인가될때 카운터(3)는 업카운팅(Up Countiong)을 하게 되고, 영상신호가 있을때에는 수직동기신호의 입력에 따라서 카운터(3)는 리셋트된다.First, as shown in the drawing, the signal of the output terminal (out) is transmitted to the microprocessor that simultaneously controls the operation of the VTR to control the operation of the VTR (particularly to stop recording), and also occurs during the drum rotation of the VTR. The signal of the input terminal IN to which the head switching signal is input and the vertical synchronization signal of the vertical synchronization signal unit 2 separated through the synchronization separation circuit 1 are input to the counter 3. When the signal of the input terminal IN is applied, the counter 3 performs up counting, and when there is a video signal, the counter 3 is reset according to the input of the vertical synchronization signal.
따라서, 영상신호가 있을 때에는 상기 동작을 계속 반복하게 된다.Therefore, when there is a video signal, the above operation is repeated.
그러나, 영상신호가 없을때에는 입력단자(IN)의 신호만 카운터(3)에 입력되고, 수직동기 신호는 인가되지 않으므로서 카운터(3)는 입력단자(IN)의 신호만을 계속 카운팅하여 하이레벨이 되는 비트를 수직동기 펄스폭보다 긴 시간으로 설정하여, 임의의 설정시킨 비트가 하이상태가 되면 카운터(3)의 출력단자(Q)에 하이신호가 출력되어 트랜지스터(TR)에 바이어스 전원으로 인가되므로서 트랜지스터(TR)를 도통시킨다.However, when there is no video signal, only the signal of the input terminal IN is input to the counter 3, and since the vertical synchronization signal is not applied, the counter 3 keeps counting only the signal of the input terminal IN so that the high level is increased. If the set bit is longer than the vertical synchronous pulse width, and any set bit becomes high, the high signal is output to the output terminal Q of the counter 3 and applied to the transistor TR as a bias power supply. The transistor TR is turned on.
이러한 출력신호(out)는 도시 생략된 마이크로 프로세서에 기록정지 '하이' 신호로 입력되어 VTR의 기록(녹화)을 중지하게 한다.This output signal out is input to a microprocessor (not shown) as a write stop 'high' signal to stop recording (recording) of the VTR.
따라서, 본 고안은 녹화시에 수직동기신호를 판별하여 영상신호가 없게되면 녹화를 중지하게 된다.Therefore, the present invention determines the vertical synchronization signal at the time of recording and stops recording when there is no video signal.
이와 같이 본 고안은 VTR에서 녹화중에 녹화되는 영상신호가 없을시에는 녹화를 자동으로 중지시킬 수 있게하므로서, 사용자의 편의를 제공하고, 불필요하게 녹화 테이프를 소모시키지 않게 된 유용한 것이다.As such, the present invention is useful in that the user can conveniently stop recording when there is no video signal recorded during recording in the VTR, and does not consume the recording tape unnecessarily.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019870020619U KR930001004Y1 (en) | 1987-11-26 | 1987-11-26 | Circuit for stopping vtr recording |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019870020619U KR930001004Y1 (en) | 1987-11-26 | 1987-11-26 | Circuit for stopping vtr recording |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR890011586U KR890011586U (en) | 1989-07-13 |
| KR930001004Y1 true KR930001004Y1 (en) | 1993-03-02 |
Family
ID=19269787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019870020619U KR930001004Y1 (en) | 1987-11-26 | 1987-11-26 | Circuit for stopping vtr recording |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR930001004Y1 (en) |
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1987
- 1987-11-26 KR KR2019870020619U patent/KR930001004Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR890011586U (en) | 1989-07-13 |
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