KR910008978Y1 - Rf signal selection circuit for vtr - Google Patents
Rf signal selection circuit for vtr Download PDFInfo
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- KR910008978Y1 KR910008978Y1 KR2019860012187U KR860012187U KR910008978Y1 KR 910008978 Y1 KR910008978 Y1 KR 910008978Y1 KR 2019860012187 U KR2019860012187 U KR 2019860012187U KR 860012187 U KR860012187 U KR 860012187U KR 910008978 Y1 KR910008978 Y1 KR 910008978Y1
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- video
- transistor
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
-
- 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
- H04N5/50—Tuning indicators; Automatic tuning control
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Abstract
내용 없음.No content.
Description
첨부 도면은 본 고안의 회로도.The accompanying drawings are circuit diagrams of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings
TR1, TR2, TR3, : 트랜지스터 R1, R2: 저항TR 1 , TR 2 , TR 3 ,: Transistor R 1 , R 2 : Resistor
1 : 오디오부 2 : 비디오부1: Audio part 2: Video part
3 : 튜너부 VOUT: RF비디오출력3: Tuner V OUT : RF Video Output
AOUT: RF비디오출력A OUT : RF video output
본 고안은 VTR의 재생시 RF음성신호 선택회로에 관한 것으로, 특히 재생시에, 하면을 보면서 음성을 듣다가, 화면은 그대로 재생되는 상태에서 음성은 RF방송신호를 선택하여 확인할 수 있도록 한 VTR의 재생시 RF음성신호 선택회로에 관한 것이다.The present invention relates to an RF audio signal selection circuit during the playback of a VTR. In particular, the playback of the VTR allows the user to select and confirm an RF broadcast signal while listening to the audio while viewing the lower surface while the playback is performed. RF audio signal selection circuit.
종래의 VTR 에서는 재생모우드선택시 테이프에 녹화된 화면과 음성을 동시에 선택하도록 되어 있으므로 재생시에 RF방송상태를 확인하기 위하여는 반듯이 재생을 멈추고 RF방송을 선택확인한 후 다시 재생모두드로 전환하여야 하는 불편함이 있었다.In the conventional VTR, when the playback mode is selected, the screen and audio recorded on the tape are simultaneously selected, so it is inconvenient to stop the playback and switch to the playback mode again after checking the RF broadcast to check the RF broadcast status. There was this.
따라서 본 고안은 상기와 같은 불편함을 해소하기 위한 것으로서 재생모드시 오디오부와 비디오부로 입력되는 신호중 오디오부로 입력되는 신호만을 차단하고 튜너부에서 RF신호를 오디오부로 되게하여 재생시에 화면은 재생화면을 보면서 음성은 RF방송을 선택하여 RF방송의 상태를 확인할 수 있도록 한 것으로, 이를 첨부된 도면에 의해 상세히 설명하면 다음과 같다.Therefore, the present invention is to solve the inconvenience as described above, in the playback mode, only the signal input to the audio unit of the signal input to the audio unit and the video unit, and the tuner unit to the RF signal to the audio unit, the screen at the time of playback While watching the voice to check the state of the RF broadcast by selecting the RF broadcast, described in detail by the accompanying drawings as follows.
재생신호(PB)가 트랜지스터(TR1)를 통해 오디오부(1)와 튜너부(3)의 입력단(IN)에 인가됨과 아울러, 재생신호를 비디오부(2)와, 상기 오디오부(1) 비디오부(1)에 RF비디오신호(VOUT) 의 RF오디오(VOUT) 신호를 출력하는 상기 튜너부(3)의 RF비디오신호 출력단자에 접속된 트랜지스터(TR3)의 베이스단자에 인가되게 하여 재생모드시 튜너부(3)는 구동정지시키고, 오디오부(1)와 비디오부(2)만이 구동되게하여 녹화된 음성과 영상을 재생되게하고, 재생모드정지시, 튜너부(3)로서 RF비디오신호와 RF오디오신호가 출력되도록 하여, RF영상과 음성신호를 방송하도록 된 VTR에 있어서, 상기 재생모드 선택시 트랜지스터(TR1)를 통해 오디오부(1)와 튜너부(3)로 이가되는 재생신호(PB)를 차단하고 튜너부(3)의 RF음성신호를 선택하기 위하여 상기 오디오부(l)의 입력단에 베이스 단자에 접속선택스위치(SW)의 단락개방에 따라 온.오프 구동하는 에미터접지 트랜지스터(TR2)의 클랙터단자를 접속하여서 된 것에다.The reproduction signal PB is applied to the input terminal IN of the audio unit 1 and the tuner unit 3 through the transistor TR1, and the reproduction signal is transmitted to the video unit 2 and the audio unit 1 video. to be applied to the base terminal of the transistor (TR 3) connected to the RF video signal output terminal of the tuner unit (3) for outputting the RF audio (V OUT) signal from the RF video signal (V OUT) to the part (1) In the playback mode, the tuner unit 3 stops driving, and only the audio unit 1 and the video unit 2 are driven to reproduce the recorded voice and video. In a VTR configured to broadcast an RF image and an audio signal by outputting a video signal and an RF audio signal, the audio signal 1 and the tuner 3 are transferred through the transistor TR 1 when the reproduction mode is selected. A base at the input terminal of the audio section 1 to block the playback signal PB and to select an RF audio signal of the tuner section 3 This is done by connecting the clamp terminal of the emitter ground transistor TR 2 to be driven on and off in accordance with the short-circuit opening of the connection selection switch SW.
상기와 같이 구성된 본 고안은 재생모드선택시 재생신호(PB)는 트랜지스터(TR1)온 구동시키므로서 오디오부(1)와 튜너부(3)가 인가되어 오디오부(1)는 구동하게 되고 반면에 튜너부(3)는 구동을 정지하게 되므로 상기 재생신호(PB)는 직접 비디오부(2)에 인가됨과 아을러 튜너부(3)의 RF비디오 출력단과 접속된 트랜지스터(TR3)를 구동시키게 된다.According to the present invention configured as described above, the audio signal 1 and the tuner 3 are applied by driving the transistor TR 1 on the reproduction signal PB when the reproduction mode is selected. Since the tuner unit 3 stops driving, the reproduction signal PB is directly applied to the video unit 2 and drives the transistor TR 3 connected to the RF video output terminal of the tuner unit 3. do.
따라서 오디오부(1)와 비디오부(3)만이 구동하게 되어 녹화된 음성과 영상신호를 재생하게 된다.Therefore, only the audio unit 1 and the video unit 3 are driven to reproduce the recorded audio and video signals.
이와같이 재생모드로 동작중에 선택스위치(SW)를 단락시키면, 트랜지스터(TR2)의 베이스단자에 하이신호가 인가되므로 트랜지스터(TR2)는 온구동하게 되어 재생시의 오디오부(1)와 튜너부(3)에 인가되는 신호가 상기 트랜지스터(TR2)에 의해 접지되므로 오디오부(1)는 구동을 중지하는 반면에 튜너부(3)는 구동하게 된다. 이때 비디오부*(2)와 튜너부(3)의 RF비디오신호(VOUT)에는 접속된 트랜지스터(TR3)에는 재생신호(PB)가 인가되는 상태이므로, 트랜지스터(TR3)는 온구동되면서 상기 튜너부(3)의 RF비디오 신호만을 접지시키게 된다.Thus Shorting the selection switch (SW) during the operation in the playback mode, since the high signal applied to the base terminal of the transistor (TR 2), the transistor (TR 2) is the one driving the audio unit (1) at the time of reproduction and the tuner unit ( Since the signal applied to 3) is grounded by the transistor TR 2 , the audio unit 1 stops driving while the tuner unit 3 drives. At this time, since the reproduction signal PB is applied to the transistor TR 3 connected to the RF video signal V OUT of the video unit * 2 and the tuner unit 3, the transistor TR 3 is driven on. Only the RF video signal of the tuner unit 3 is grounded.
그러므로 튜너부(3)의 RF음성신호가 상기 오디오부(3)의 RF오디오 입력단(AIN)에 연가되게 된다. 따라서 상기 비디오부(2)에 인가되는 재생신호(PB)와 오디오부(1)의 RF오디오입력단(AIN)에 인가되는 RF오디오 신호에 의하여 재생모드시 녹화된 영상신호는 그대로 재생되면서 RF오디오신호를 청취하는, 즉 재생모드 상태에서 녹화된 화면을 보면서 RF방송 신호중 음성신호를 선택 확일할 수 있게되는 것이다.Therefore, the RF audio signal of the tuner unit 3 is connected to the RF audio input terminal AIN of the audio unit 3. Therefore, the video signal recorded in the playback mode is reproduced as it is by the reproduction signal PB applied to the video unit 2 and the RF audio signal applied to the RF audio input terminal AIN of the audio unit 1 while the RF audio signal is reproduced as it is. It is possible to select and confirm the audio signal of the RF broadcast signal while listening to the recorded screen in the playback mode.
한편, 상기와 같이 녹화된 화면을 보면서 RF오디오신호 청취후 선택스위치(SW)를 개방시키면, 상기 트랜지스터(TR2)의 베이스단자에는 하이신호가 인가되지 않으므로 트랜지스터(TR2)는 온에서 오프로되어 입력되는 재생신호(PB)가 오디오부(1)와 튜너부(3)에 인가되므로 중단되었던 녹화된 오디오신호는 오디오부(1)에 의하여 재생되는 반면에 튜너부(3)는 동작을 중지하고 상기 재생신호(PB)는 비디오부(2)에 계속해서 인가된 상태이므로 재생모드인 상기 오디오부(1)와 비디오부(2)에 의하여 녹화된 음성과 영상신호를 재생하게 된다.On the other hand, when the selection switch SW is opened after listening to the RF audio signal while watching the recorded screen as described above, since the high signal is not applied to the base terminal of the transistor TR 2 , the transistor TR 2 is turned on from off. The inputted playback signal PB is applied to the audio unit 1 and the tuner unit 3 so that the interrupted recorded audio signal is reproduced by the audio unit 1 while the tuner unit 3 stops operating. Since the reproduction signal PB is continuously applied to the video unit 2, the audio and video signals recorded by the audio unit 1 and the video unit 2 in the reproduction mode are reproduced.
이상에서 설명한 바와같이, 본 고안은 재생모드선택 동작시 튜너부는 동작이 정지되고 오디오부와 비디오부가 동작하면서 녹화된 음성과 영상신호를 재생하는 VTR아 트랜지스터와 선택스위치를 부가하여 상기 선택스위치의 접속에 따른 트랜지스터 온 구동으로 상기 재생모드동작시 오디오부로 입력되는 신호만을 차단함과 아울러 튜너부는 동작시켜 녹화된 영상에 의한 화면을 그대로 재생을 하고 튜너부 RF오디오신호만을 선택하여 반송할 수 있도록 함으로써, 재생모드선택 동작시에 녹화된 영상을 보면서, RF방송음성신호를 선택하여 들을수 있는, 즉 재생모드시 RF방송음성신호를 확인하면서 VTR를 볼 수 있는 VTR의 이용에 보다 편리함을 줄수 있는 효과를 제공하게 되는 것이다.As described above, the present invention provides a connection of the selection switch by adding a VTR transistor and a selection switch for reproducing the recorded audio and video signals while the tuner unit is stopped and the audio unit and the video unit operate during the reproduction mode selection operation. By blocking the signal input to the audio unit during the regeneration mode operation by the transistor-on driving according to the operation, the tuner unit is operated to reproduce the screen according to the recorded video as it is, and to select and return only the tuner unit RF audio signal, While watching the recorded video during the playback mode selection operation, it is possible to select and listen to the RF broadcast audio signal, that is, to provide an effect that can be more convenient to use the VTR to view the VTR while checking the RF broadcast audio signal in the playback mode. Will be done.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860012187U KR910008978Y1 (en) | 1986-08-12 | 1986-08-12 | Rf signal selection circuit for vtr |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860012187U KR910008978Y1 (en) | 1986-08-12 | 1986-08-12 | Rf signal selection circuit for vtr |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR880005103U KR880005103U (en) | 1988-05-11 |
| KR910008978Y1 true KR910008978Y1 (en) | 1991-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019860012187U KR910008978Y1 (en) | 1986-08-12 | 1986-08-12 | Rf signal selection circuit for vtr |
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| Country | Link |
|---|---|
| KR (1) | KR910008978Y1 (en) |
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1986
- 1986-08-12 KR KR2019860012187U patent/KR910008978Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
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| KR880005103U (en) | 1988-05-11 |
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