KR890004849B1 - Automatic power suplyer and channel selecking circuit for vtr and tv - Google Patents

Automatic power suplyer and channel selecking circuit for vtr and tv Download PDF

Info

Publication number
KR890004849B1
KR890004849B1 KR1019860011582A KR860011582A KR890004849B1 KR 890004849 B1 KR890004849 B1 KR 890004849B1 KR 1019860011582 A KR1019860011582 A KR 1019860011582A KR 860011582 A KR860011582 A KR 860011582A KR 890004849 B1 KR890004849 B1 KR 890004849B1
Authority
KR
South Korea
Prior art keywords
unit
video signal
tape
channel
power
Prior art date
Application number
KR1019860011582A
Other languages
Korean (ko)
Other versions
KR880008655A (en
Inventor
변상권
Original Assignee
삼성전자 주식회사
한형수
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼성전자 주식회사, 한형수 filed Critical 삼성전자 주식회사
Priority to KR1019860011582A priority Critical patent/KR890004849B1/en
Publication of KR880008655A publication Critical patent/KR880008655A/en
Application granted granted Critical
Publication of KR890004849B1 publication Critical patent/KR890004849B1/en

Links

Images

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B31/00—Arrangements for the associated working of recording or reproducing apparatus with related apparatus
    • G11B31/006—Arrangements for the associated working of recording or reproducing apparatus with related apparatus with video camera or receiver
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/08—Separation of synchronising signals from picture signals
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/63—Generation or supply of power specially adapted for television receivers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

The circuit for supplying power to monitor and for auto channel selection when tape is inserted includes a peak detector (12) for transmitting HIGH signal when tape is inserted, a switching unit (13) for turning off the monitor when tape is recoiled, a switching unit (17) for selectring set channel, and a power switching unit (24) for turning on the monitor when a tape is inserted and for maintaining the power.

Description

영상신호기록재생장치의 텔레비젼모니터 자동전원 공급 및 채널선국회로TV monitor automatic power supply and channel tuning circuit of video signal recorder

제1도는 본 발명의 회로도.1 is a circuit diagram of the present invention.

제2도는 본 발명의 피크검출부를 설명하기 위한 파형도.2 is a waveform diagram for explaining a peak detector of the present invention.

제3도는 본 발명의 미분회로와 전원오프스위칭 동작을 설명하기 위한 파형도이다.3 is a waveform diagram for explaining the differential circuit and power-off switching operation of the present invention.

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

1 : 영상신호기록재생장치의 자동전원공급부1: Automatic power supply unit of video signal recording and playback device

2 : 영상신호기록재생장치의 자동플레이부2: automatic play part of video signal recording and reproducing apparatus

3 : 드럼모우터제어부 4 : 미분회로3: drum motor control unit 4: differential circuit

5 : 수직록펄스입력부 6 : 고주파컨버터5: vertical lock pulse input unit 6: high frequency converter

7 : 고주파증폭부 8,14 : 혼합부7: high frequency amplification part 8,14: mixing part

9,15 : 중간주파증폭부 10,21 : 영상신호검출부9,15: intermediate frequency amplifier 10,21: image signal detector

11,22 : 동기신호분리부 12,16 : 피크검출부11,22: Sync signal separator 12,16: Peak detector

13,19,24 : 스위칭부 17 : 채널하강스위칭부13,19,24: switching unit 17: channel lowering switching unit

18 : 주파수합성부 20 : 국부발진부18: frequency synthesizer 20: local oscillator

23 : 전원스위칭부 25 : 가변국부발진부23 power supply switching unit 25 variable local oscillation unit

A1,A2: OP증폭기 F1-F4: FETA1, A 2 : OP amplifier F 1 -F 4 : FET

Q1,Q2,Q5,Q6 : 디지탈증폭기 SW1 : 채널하강스위치Q1, Q2, Q5, Q6: Digital Amplifier SW1: Channel Down Switch

SW2: 전원스위칭 D1-D11 : 다이오드SW 2 : Power Switching D1-D11: Diode

CTL B+ : 텔레비젼모니터의 전원이 턴온되었을 경우에 인가되는 전압CTL B +: Voltage applied when the TV monitor's power is turned on.

본 발명은 테이프가 삽입되면 이를 아미크로프로셋서가 감지하여 자동으로 전원을 턴온시켜 주게되는 영상신호기록재생장치에 있어서, 상기 테이프삽입시 재생될 영상신호를 모니터하기 위한 텔레비젼모니터의 전원도 자동으로 턴온되게 함과 더불어, 미리 설정된 채널도 자동으로 선국되도록 한 영상신호기록재생장치의 텔레비젼모니터 자동전원공급 및 채널선국회로에 관한 것이다.The present invention provides a video signal recording and reproducing apparatus in which a microprocessor is automatically turned on when a tape is inserted, and the power of a television monitor for monitoring a video signal to be reproduced when the tape is inserted is also automatically. The present invention relates to a television monitor automatic power supply and channel tuning circuit of a video signal recording and reproducing apparatus which is turned on and which preset channels are also automatically tuned to.

일반적으로 영상신호기록재생장치를 사용하여 영상신호를 재생하고자 할 경우 시청하고자 하는 영상신호가 기록된 테이프를 영상신호기록재생장치에 삽입하고 영상신호기록재생장치의 전원을 턴온시킨 다음 텔레비젼모니터의 전원은 턴온시킴과 더불어 미리 설정된 채널번호(예컨대 채널 3,4)에 채널을 일치시키는 몇번의 수작업을 통하여 프로그램을 시청하게 된다.In general, when a video signal is to be reproduced using a video signal recording / reproducing apparatus, a tape in which the video signal to be watched is inserted into the video signal recording / reproducing apparatus, the power of the video signal recording / reproducing apparatus is turned on, and then the power of the TV monitor is turned on. In addition to turning on, the user may watch a program through several manual operations of matching a channel to a preset channel number (for example, channels 3 and 4).

그런데, 모든 전자제품 및 생산기기가 점차 자동화 추세로 개발되고 있는 현싯점에서 상기와 같은 수작업상의 번거로움은 사용자에게 많은 불편을 갖게 한다.By the way, in the current situation where all electronic products and production equipment is gradually developed in the automation trend, such manual hassle has caused a lot of inconvenience for the user.

본 발명은 상기한 불편함을 해소시키고 자동화추세에 보조를 같이하기 위해서 발명된 것으로, 사용자가 재생하고자 하는 테이프를 영상신호기록재생장치에 삽입하게 되면 이를 마이크로프로셋서가 감지하여 자동으로 영상신호기록재생장치를 턴온되게 하여 녹화된 테이프를 플레이시키게 되어있는 영상신호기록재생장치에 있어서 상기 영상신호기록재생장치에 테이프가 삽입되면 상기 녹화테이프의 재생신호를 시청하기 위한 텔레비젼 모니터도 자동으로 턴온되게 함은 물론, 선국하고자 하는 채널이 자동으로 선국되게 한 영상신호기록재생장치의 텔레비젼모니터자동 전원공급 및 채널선국회로를 제공하고자 함에 그 목적이 있다.The present invention has been invented to solve the above-mentioned inconvenience and to assist in the automatic trend, and when the user inserts a tape to be played back into the video signal recording and reproducing apparatus, the microprocessor detects and automatically records the video signal. In a video signal recording and reproducing apparatus configured to play a recorded tape by turning on a reproducing apparatus, a television monitor for watching a reproducing signal of the recording tape is automatically turned on when a tape is inserted into the video signal recording and reproducing apparatus. In addition, it is an object of the present invention to provide an automatic power supply and channel tuning circuit of a television monitor of a video signal recording and reproducing apparatus in which a channel to be tuned to is automatically tuned.

이하 본 발명의 구성 및 작용, 효과를 예시도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter, the configuration, operation, and effects of the present invention will be described in detail with reference to the accompanying drawings.

본 발명은 영상신호기록재생장치의 테이프삽입신호 감지출력단(APE IN)에 영상신호기록재생장치의 자동전원공급부(1)와 자동플레이부(2), 드럼모우터제어부(3), 디지털트랜지스터(Q1)와 저항(R1)(R2) 및 콘덴서(C1)로 구성된 미분회로(4), 수직록펄스입력부(5), 고주파컨버터(6) 및 텔레비젼의 고주파증폭부(7)가 연결되고; 상기 고주파증폭부(7)에는 중간주파증폭부(9)가 연결된 혼합부(8)와 중간주파증폭부(15)가 연결된 혼합부(14)가 각각 병렬로 연결되며;상기 중간주파증폭부(9)에는 동기신호분리부(11)가 연결된 영상신호검출부(10)과, 디지탈트랜지스터(Q2)(Q6)와 저항(R3)(R4), 콘덴서(C4) 및 FET(F1)로 구성된 스위칭부⒀가 연결되어 있으면서 OP증폭기(A1)와 다이오드(D7), 저항(R5), 콘덴서(C2) 및 FET(F4)로 구성된 피크검출부(12)가 각각 병렬로 연결되고; 상기 중간주파증폭부(13)에는 저항(R7)과 트랜지스터(TR3) 및 채널하강스위치(SW1)로 구성된 채널하강스위칭부(17)와 주파수합성부(18)가 차례로 연결되어 있으면서 OP증폭기(A2)와 다이오드(D8), 콘덴서(C3), 저항(R6) 및 FET(F3)로 구성된 피크검출부(16)와, 동기신호분리부(22)와 저항(R9)과 콘덴서(C5)(C6), 다이오드(D1) 및 FET(F2)로 구성된 전원스위칭부(23)가 차례로 연결된 영상신호검출부(21)가 각각 병렬로 연결되며; 상기 혼합부(14)에는 국부발진부(20)가 열결되고; 상기 주파수합성부(18)에는 스위칭부(19)를 통해서 가변국부발진부(25)가 연결된 구조로 되어 있다.The present invention provides an automatic power supply unit (1), an automatic play unit (2), a drum motor control unit (3), and a digital transistor (APE IN) of a video signal recording and reproducing apparatus (APE IN). A differential circuit 4 composed of Q1) and resistors R1 (R2) and capacitor C1, a vertical rock pulse input unit 5, a high frequency converter 6 and a high frequency amplifier 7 of a television; The high frequency amplification unit 7 is connected to the mixing unit 8 connected to the intermediate frequency amplifier 9 and the mixing unit 14 to which the intermediate frequency amplifier 15 is connected in parallel; 9) a video signal detector 10 having a synchronization signal separator 11 connected thereto, and a switching unit including a digital transistor Q2 and Q6, a resistor R3, R4, a capacitor C4, and a FET F1. Is connected, and the peak detector 12 composed of the OP amplifier A1, the diode D7, the resistor R5, the capacitor C2, and the FET F4 is connected in parallel; The intermediate frequency amplifier 13 is connected to the channel lowering switching unit 17 and the frequency synthesizing unit 18, which are composed of the resistor R7, the transistor TR3, and the channel down switch SW1, in turn. ), A peak detector 16 comprising a diode D8, a capacitor C3, a resistor R6, and a FET F3, a synchronization signal separator 22, a resistor R9, and a capacitor C5, C6. Are connected in parallel with the video signal detection units 21, in which power supply switching units 23 composed of diodes D1 and FETs F2 are sequentially connected; A local oscillation unit 20 is connected to the mixing unit 14; The frequency synthesizer 18 has a structure in which the variable local oscillator 25 is connected through a switching unit 19.

제1도는 상기한 바와 같이 구성된 본 발명의 회로도로서 그 동작설명은 다음과 같다.1 is a circuit diagram of the present invention configured as described above, the operation of which is as follows.

먼저 재생하고자 하는 테으프를 삽입하면 자동으로 턴온되게 되는 영상신호기록재생장치에 재생하고자 하는 테이프를 삽입할 경우 텔레비젼모니터의 전원이 자동으로 턴온되는 과정을 살펴보면 다음과 같다.First, when the tape to be inserted is inserted into the video signal recording and reproducing apparatus, which is automatically turned on when the tape to be played is inserted, the process of automatically turning on the power of the TV monitor is as follows.

상기 영상신호기록재생장치에 녹화테이프를 삽입하면 마이크로프로셋서(도시되어 있지 않음)에 의해 영상신호기록재생장치의 자동전원공급부⑴에서 영상신호기록재생장치의 전원을 자동으로 턴온시키게 된다. 따라서 자동플레이부⑵에는 테이프를 플레이시키면 통상의 드럼모우터제어부⑶가 동작하게 되는데, 이에 따라 드럼모우터제어부⑶의 제3도의 A와 같은 출력신호는 디지탈 트랜지스터(Q1)에 의해 제3도의 B와 같이 하이레벨에서 로우레벨로 반전된 다음 콘덴서(C1)와 저항(R2)으로 구성된 미분회로⑷에 의해 제3도의 C도와 같이 미분되게 된다.Inserting a recording tape into the video signal recording and reproducing apparatus automatically turns on the power of the video signal recording and reproducing apparatus by an automatic power supply unit of the video signal recording and reproducing apparatus by a microprocessor (not shown). Therefore, when the tape is played in the automatic play section, the normal drum motor control section is operated. Accordingly, an output signal such as A in FIG. 3 of the drum motor control section is output by the digital transistor Q1 to B in FIG. As shown in FIG. 3, C is inverted from the high level to the low level, and then is differentiated by the differential circuit 구성된 composed of the capacitor C1 and the resistor R2.

상기 미분된 펄스는 수직록펄스입력부⑸로 인가되어 수직록펄스와 합성된 다음 고주파컨버터⑹로 입력되게 된다. 따라서 고주파컨버터⑹에서는 상기 미분펄스와 합성된 수직록펄스와 캐리어주파수와 함께 텔레비젼모니터의 고주파증폭부⑺를 통해서 혼합부(8)(14)로 입력되게 된다.The differentiated pulse is applied to the vertical lock pulse input section, synthesized with the vertical lock pulse, and then input to the high frequency converter. Therefore, the high frequency converter ⑹ is input to the mixing section 8 and 14 through the high frequency amplifier ⑺ of the television monitor together with the vertical rock pulse and the carrier frequency synthesized with the differential pulses.

한편, 상기 혼합부(8)(14)에서는 입력된 신호와 자체채널의 고유발진주파수가 동조되었을 때 신호를 출력하게 되는데, 혼합부(8)는 가변국부발진부(25)에서 출력되는 신호가 없으므로 동작하지 않게되고 혼합부(14)는 자체 국부발진부(20)가 발진을 하고 있기 때문에 입력신호와 동조되어 출력신호를 중간주파증폭부(15)로 출력하게 된다. 따라서 중간주파증폭부(15)에서 증폭된 신호는 다이오드(D10)를 통해 영상신호검출부(21)에서 영상신호가 검출된 다음 동기신호분리부(22)에 의해서 동기신호만 분리되어 저항(R9)과 콘덴서(C6)로 구성된 저역통과 여파기와 다이오드(D11)를 통해 FET(F2)에 인가되게 된다. 고로 텔레비젼모니터의 전원스위치(SW2)와 병렬로 연결되어 있는 FET(F2)가 턴온되므로 텔레비젼모니터의 전원스위치(SW2)는 턴온되게 된다. 한편 디지탈 트랜지스터(Q5)는 텔레비젼모니터의 파워스위치(SW2)가 온되면 출력되는 전압(CTL B+)에 위해 텔레비젼모니터의 파워스위치(R2)가 동기신호에 따라 온.오프되는 것을 방지하는 역할을 한다. 한편, 텔레비젼모니터의 채널선국에 대해서 설명하면 다음과 같다.On the other hand, the mixing section 8 and 14 outputs a signal when the input signal and the natural oscillation frequency of its own channel are tuned, but the mixing section 8 has no signal output from the variable local oscillation section 25. Since the mixing unit 14 has its own local oscillation unit 20 oscillating, the mixing unit 14 synchronizes with the input signal and outputs the output signal to the intermediate frequency amplifier 15. Therefore, the signal amplified by the intermediate frequency amplifier 15 is detected by the video signal detector 21 through the diode D10, and then the sync signal separator 22 separates only the sync signal and the resistor R9. It is applied to the FET F2 through a low pass filter composed of an overcondenser C6 and a diode D11. Therefore, since the FET F2 connected in parallel with the power switch SW2 of the television monitor is turned on, the power switch SW2 of the television monitor is turned on. On the other hand, the digital transistor Q5 prevents the power switch R2 of the television monitor from being turned on or off according to the synchronization signal for the voltage CTL B + outputted when the power switch SW2 of the television monitor is turned on. . On the other hand, the channel selection of the television monitor is described as follows.

상기 텔레비젼모니터의 전원턴온 동작시와 같이 동작하여 다이오드(D9)를 통해서 인가되는 중간주파증폭신호는 제2도에 도시된 바와 같이 OP증폭기(A2)의 비반전단자(+)로 입력되는 신호(Vi)가 반전단자로 입력되는 신호(Vf)보다 크면, 즉 I점에서는 OP증폭기(A2)의 출력단자로 하이신호가 발생되고, 반대로 비반전단자(+)로 입력되는 신호(Ai)가 반전단로 입력되는 신호(Vf)보다 작으면, 즉 I점보다 낮은 전압이 들어오면 OP증폭기(A2)의 출력단자로 로우신호가 출력되지만, 콘덴서(C3)에 충전된 전위의 방전에 의해 FET(F3)로 하이신호를 출력시켜 FET(F3)의 출력측에서 항상 하이신호가 출력되게 동작하는 피크검출부(16)의 하이출력신호에 의해 트랜지스터(Q3)가 턴온되게 되는데, 이에 따라 텔레비젼모니터의 채널하강스위치(SW1)와 병렬로 연결되어 있는 트랜지스터(Q3)의 턴온에 의해 채널하강을 시작하는데 이 채널하강신호는 주파수합성부(18)의 출력단에서 출력된 다음 스위칭부(19)를 통해 가변국부발진부(25)에 인가되게 된다. 따라서 가변국부발진부(25)에서는 계속 변동하는 캐리어주파수를 혼합부(8)로 출력하게 되므로 상기혼합부(8)에서는 고주파증폭부(7)에서 입력된 신호와 가변국부발진부(25)에서 입력된 신호가 동조되었을 때의 신호를 합성하여 중간주파증폭부(9)를 통해서 다이오드(D5)와 다이오드(D6)로 출력시키게 된다.The intermediate frequency amplifier signal applied through the diode D9 in the same manner as in the power-on operation of the television monitor is input to the non-inverting terminal (+) of the OP amplifier A2 as shown in FIG. If Vi) is greater than the signal Vf inputted to the inverting terminal, that is, at the point I, a high signal is generated at the output terminal of the OP amplifier A2, whereas the signal Ai inputted to the non-inverting terminal (+) is inverted. If the signal Vf is smaller than the input signal, that is, a voltage lower than the point I, the low signal is output to the output terminal of the OP amplifier A2, but the FET ( The transistor Q3 is turned on by the high output signal of the peak detector 16, which outputs a high signal to F3 and always outputs a high signal on the output side of the FET F3. Transistor Q connected in parallel with switch SW1 The channel down signal is started by the turn-on of 3). The channel down signal is outputted from the output terminal of the frequency synthesizer 18 and then applied to the variable local oscillator 25 through the switching unit 19. Therefore, since the variable local oscillator 25 continuously outputs the continuously changing carrier frequency to the mixing unit 8, the mixing unit 8 receives the signal input from the high frequency amplifier 7 and the variable local oscillator 25. When the signal is tuned, the signal is synthesized and output to the diode D5 and the diode D6 through the intermediate frequency amplifier 9.

따라서, 다이오드(D5)로 인가된 신호는 영상신호검출부(10)와 동기신호분리부(11)를 통해서 기존의 텔레비젼모니터회로도 입력되게 되고, 다이오드(D6)로 인가된 신호는 OP앰프(OP1)와 다이오드(D7), 저항(R5), 콘덴서(C2) 및 FET(F4)로 구성된 피크검출부⑿에 의해 하이신호로서 디지탈트랜지스터(Q2)(Q6)로 출력되게 된다. 따라서 디지털트랜지스터(Q2)가 턴온되게 되므로 트랜지스터(Q3)는 턴오프되게 되어 채널하강 동작을 정지시킴과 더불어 원하는 채널이 선국되게 된다.Therefore, the signal applied to the diode D5 is also inputted to the existing television monitor circuit through the image signal detector 10 and the synchronization signal separator 11, and the signal applied to the diode D6 is the OP amplifier OP1. And a peak detection section composed of a diode D7, a resistor R5, a capacitor C2, and a FET F4 are outputted to the digital transistors Q2 and Q6 as high signals. Accordingly, since the digital transistor Q2 is turned on, the transistor Q3 is turned off to stop the channel lowering operation and the desired channel is tuned.

한편 텔레비젼모니터의 전원을 턴온시키는 동작에 대해서 설명하면 다음과 같다.On the other hand, the operation of turning on the power of the television monitor will be described.

상기한 기능설명에서 도시된 바와 같이 영상신호기록재생장치에 삽입되어 있는 녹화테이프를 추출하게 되면 영상신호기록재생장치내에 내장되어 있는 마이크로프로셋서(도시되어 있지 않음)가 이를 감지하여 영상신호기록재생장치의 전원공급을 차단하게 된다. 따라서 고주파증폭기(7)에서 아무런 신호도 출력되지 않게 되므로 기존의 텔레비젼모니터로 인가되는 출력이 없게 됨과 더불어 다이오드(D6)와 피크검출부(12)를 통해서 출력되는 신호와 다이오드(D9)와 피크검출부(16)를 통해서 로우신호가 출력되게 되므로 디지털트랜지스터(Q2)(Q6)와 트랜지스터(Q3)는 모두 턴오프되게 된다. 따라서 전압(CTL B+)에 의해 디지털트랜지스터(Q6)의 콜렉터단자가 하이로 되어 콘덴서(C4)와 저항(R4)으로 구성된 미분회로에 의해서 제2도의 C와 같은 펄스가 발생되므로 FET(F1)는 시정부(R4×R4) 시간동안 턴온된 다음 턴오프되게 된다.When the recording tape inserted in the video signal recording and reproducing apparatus is extracted as shown in the above functional description, a microprocessor (not shown) built in the video signal recording and reproducing apparatus detects this and reproduces the video signal recording and reproducing. The power supply to the device will be cut off. Therefore, since no signal is output from the high frequency amplifier 7, there is no output applied to the existing television monitor, and the signal, diode D9, and peak detector (D6) and the peak detector (12) Since the low signal is output through 16, both the digital transistors Q2 and Q6 and the transistor Q3 are turned off. Therefore, the collector terminal of the digital transistor Q6 becomes high due to the voltage CTL B +, and a differential circuit composed of the capacitor C4 and the resistor R4 generates a pulse like C in FIG. It is turned on for the city (R4 x R4) time and then turned off.

따라서 전원스위치(SW2)는 시정수 시간후 오프되게 되므로 텔레비젼모니터에 공급되는 전원이 오프되게 된다.Therefore, since the power switch SW2 is turned off after the time constant time, the power supplied to the television monitor is turned off.

상기한 바와 같이 본 발명은 영상신호기록재생장치에 재생하고자 하는 테이프를 삽입함과 더불어 텔레비젼모니터의 전원이 자동으로 턴온됨은 물론 원하는 채널도 자동으로 선국되므로 영상신호기록재생장치의 동작과 함께 텔레비젼모니터를 자동으로 동작시킬 수 있어 사용상의 불편함을 제거할 수 있는 효과가 있다.As described above, the present invention inserts a tape to be played back into the video signal recording and reproducing apparatus, and the power of the TV monitor is automatically turned on as well as the desired channel is automatically tuned. It can be operated automatically, there is an effect that can eliminate the inconvenience in use.

Claims (1)

영상신호기록재생장치의 자동전원공급부(1)와 자동플레이부(2), 드럼모우터제어부(3), 미분회로(4), 수직록펄스입력부(5), 고주파컨버터(6), 텔레비젼의 고주파증폭부(7), 혼합부(8)(14), 중간주파증폭부(9)(15), 영상신호검출부(10)(21), 동기신호분리부(11)(22), 가변국발진부(25)를 구비하고 있는 영상신호처리 시스템에 있어서, 상기 중간주파증폭부(9)와 영상신호검출부(10)사이에 OP증폭기(A1)와 다이오드(D7), 콘덴서(C2), 저항(R5) 및 FET(F4)로 구성되는 테이프 삽입시 항상 하이신호를 출력하는 피크검출부(12)가 연결되고, 상기 피크검출부(12)에는 디지털다이오드(Q2)(Q6)와 저항(R3)(R4), 콘덴서(C4) 및 FET(F1)로 구성되어 영상신호기록재생장치에 삽입된 테이프가 추출되었을 때 텔레비젼모니터의 전원을 턴오프시키게 하는 스위칭부(13)가 연결되며, 상기 중간주파증폭(15)에는 OP증폭기(A2)와 다이오드(D8), 콘덴서(C3), 저항(R6) 및 FET(F3)로 구성된 피크검출부(16)가 연결되고, 상기 피크검출부(16)에는 저항(R7)와 트랜지스터(Q3) 및 스위치(SW3)로 구성되어 미리 설정된 채널이 선국되게 스위칭하는 채널하강스위칭부(17)가 연결되며, 상기 채널하강스위칭부(17)에는 주파수합성부(18)를 통하여 트랜지스터(Q4)로 구성된 스위칭부(19)가 연결되고, 상기 수위칭부(19)에는 가변국부발진부(25)가 연결되며, 상기 동기신호분리부(22)에는 저항(R9)과 콘덴서(C5)(C6), 다이오드(D1) 및 FET(F2)로 구성되어 영상신호기록재생장치에 테이프가 삽입되었을때 텔레비젼모니터의 전원을 턴온시키는 전원스위칭부(24)가 연결되고, 상기 전원스위칭부(24) 내에 있는 FET(F2) 의 게이트단자에는 디지탈트랜지스터(Q5)를 구비하여 영상신호기록재생장치에 테이프가 삽입되었을 때 계속 텔레비젼모니터에 계속 전원을 공급하도록 하는 스위칭부(24)가 연결된 구성으로 되어, 영상신호기록재생장치에 테이프가 삽입되었을 때 텔레비젼모니터에 전원을 자동으로 공급하고 설정된 채널을 자동을 선국할 수 있도록 된 것은 특징으로 하는 영상신호기록재생장치의 텔레비젼모니터 자동전원공급 및 채널선국회로.Automatic power supply unit 1, automatic play unit 2, drum motor control unit 3, differential circuit 4, vertical rock pulse input unit 5, high frequency converter 6, television set of a video signal recording and reproducing apparatus High frequency amplifier 7, mixer 8, 14, intermediate frequency amplifier 9, 15, video signal detector 10, 21, sync signal separator 11, 22, variable station In an image signal processing system having an oscillator 25, an OP amplifier A1, a diode D7, a capacitor C2, and a resistor between the intermediate frequency amplifier 9 and the image signal detector 10. A peak detector 12 that always outputs a high signal when a tape is inserted, consisting of R5) and FET F4, is connected, and the digital detectors Q2 and Q6 and resistors R3 and R4 are connected to the peak detector 12. ), A condenser (C4) and a FET (F1) are connected to the switching unit 13 to turn off the power of the television monitor when the tape inserted into the video signal recording and playback apparatus is extracted, the intermediate frequency amplifier ( 15) The peak detector 16 is composed of an OP amplifier A2, a diode D8, a capacitor C3, a resistor R6, and a FET F3. The peak detector 16 is connected to a resistor R7 and a transistor. A channel down switching unit 17, which is composed of a Q3 and a switch SW3, for switching a preset channel to be tuned, is connected, and a transistor Q4 is connected to the channel down switching unit 17 through a frequency synthesizing unit 18. Is connected to the switching unit 19, the variable level oscillator 25 is connected to the water leveling unit 19, and the resistor R9 and the capacitor C5 and C6 to the synchronization signal separator 22. ), A diode (D1) and a FET (F2) are connected to the power switch unit 24 for turning on the power of the television monitor when a tape is inserted into the video signal recording and reproducing apparatus, in the power switch unit 24 The gate terminal of the FET F2 is provided with a digital transistor Q5 so that the tape can The switching unit 24 is configured to continuously supply power to the television monitor when it is input, and automatically supplies power to the television monitor and selects a set channel automatically when a tape is inserted into the video signal recording and reproducing apparatus. And an automatic power supply and channel tuning circuit for a television monitor of a video signal recording and reproducing apparatus.
KR1019860011582A 1986-12-30 1986-12-30 Automatic power suplyer and channel selecking circuit for vtr and tv KR890004849B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019860011582A KR890004849B1 (en) 1986-12-30 1986-12-30 Automatic power suplyer and channel selecking circuit for vtr and tv

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019860011582A KR890004849B1 (en) 1986-12-30 1986-12-30 Automatic power suplyer and channel selecking circuit for vtr and tv

Publications (2)

Publication Number Publication Date
KR880008655A KR880008655A (en) 1988-08-31
KR890004849B1 true KR890004849B1 (en) 1989-11-29

Family

ID=19254588

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019860011582A KR890004849B1 (en) 1986-12-30 1986-12-30 Automatic power suplyer and channel selecking circuit for vtr and tv

Country Status (1)

Country Link
KR (1) KR890004849B1 (en)

Also Published As

Publication number Publication date
KR880008655A (en) 1988-08-31

Similar Documents

Publication Publication Date Title
JP2993512B2 (en) Receiving machine
KR890004849B1 (en) Automatic power suplyer and channel selecking circuit for vtr and tv
KR970006174B1 (en) Reservation recording method for vcr of no tuner
KR0139947Y1 (en) Character signal displaying apparatus for camcorder
KR900002670B1 (en) Automatic tuning circuit of tv
KR920007018Y1 (en) Power automatic on/off apparatus
KR910006141Y1 (en) When image signal of vtr is not melody generating apparatus
JPS6333408Y2 (en)
KR930004523Y1 (en) Audio recording and picture muting circuit for non-video signal of vcr
KR950010056B1 (en) Tv/vcr auto changing method & control circuit
KR910006139Y1 (en) Melody generating apparatus when image signal is not
KR930010362B1 (en) Audio deck comprising vcr
KR930008228Y1 (en) Tv video signals muting circuit
KR910009306Y1 (en) Test signal generating and vocal signal recording system
JPS60152184A (en) Device for automatically controlling gain
KR910003392Y1 (en) Broadingcast signal/playback selection switching circuit of video cassette recorder
KR870003132Y1 (en) Audio system
KR880002750Y1 (en) Oscillator signal control circuit
KR900006815Y1 (en) Automatic switching circuit of melody in case of video signal output for vcr
KR20000004025A (en) Method of recording an image with a user's selecting quality on a tvcr
KR910001583Y1 (en) Broad casting display circuit for multi-audio television
KR900002362Y1 (en) Automatic power control circuit for television
KR940013165A (en) Automatic monitoring method of video cassette recorder
KR930000746Y1 (en) Automatic tracking circuit
KR0136501Y1 (en) Ntsc/pal automatic detecting circuit

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20021031

Year of fee payment: 14

LAPS Lapse due to unpaid annual fee