KR900005435Y1 - The recording control circuit of video cassette recorder - Google Patents

The recording control circuit of video cassette recorder Download PDF

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Publication number
KR900005435Y1
KR900005435Y1 KR2019860019018U KR860019018U KR900005435Y1 KR 900005435 Y1 KR900005435 Y1 KR 900005435Y1 KR 2019860019018 U KR2019860019018 U KR 2019860019018U KR 860019018 U KR860019018 U KR 860019018U KR 900005435 Y1 KR900005435 Y1 KR 900005435Y1
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South Korea
Prior art keywords
recording
signal
terminal
video signal
recording control
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KR2019860019018U
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Korean (ko)
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KR880010455U (en
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전웅기
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주식회사 금성사
구자학
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/026—Control of operating function, e.g. switching from recording to reproducing by using processor, e.g. microcomputer
    • 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
    • H03K17/60—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 bipolar transistors

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

내용 없음.No content.

Description

비디오 카세트 레코더의 녹화 제어회로Recording control circuit of video cassette recorder

제1도는 본 고안의 녹화제어회로도.1 is a recording control circuit diagram of the present invention.

제2도는 제1도 각부의 파형도.2 is a waveform diagram of each part of FIG.

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

1 : 영상신호처리부 2 : 정류기1: Image signal processor 2: Rectifier

TR1,TR2 : 트랜지스터 R1-R6 : 저항TR1, TR2: Transistor R1-R6: Resistance

SW1 : 녹화제어스위치SW1: Recording Control Switch

본 고안은 비디오 카세트 레코더에 있어서, 데크부에 녹화한 테이프를 내장하고 사용자가 실수로 녹화버튼을 누를 경우에 녹화되지 않게한 비디오 카세트 레코더의 녹화제어회로에 관한 것이다.The present invention relates to a recording control circuit of a video cassette recorder in which a tape recorded in a deck portion is embedded in a video cassette recorder and is not recorded when a user presses a recording button by mistake.

종래의 비디오 카세트 레코더는 사용자가 녹화버튼을 누르면 녹화를 하였으므로 사용자가 녹화된 테이프를넣고 실수로 녹화버튼을 누르면 그 녹화된 영상신호가 지워지는 결합이 있었다.In the conventional video cassette recorder, when the user presses the recording button, the recording is performed. Therefore, when the user inserts the recorded tape and accidentally presses the recording button, the recorded video signal is deleted.

본 고안은 이와같은 종래의 결합을 감안하여, 공테이프 즉, 녹화되지 않은 테이프를 내장하여 녹화할 경우에는 바로 녹화가 시작되게 하고, 녹화된 테이프를 내장하여 녹화할 경우에는 녹화제어스위치를 눌러야 녹화되게함으로써 사용자가 실수로 녹화버튼을 누를 경우에 녹화된 테이프가 지워지는 것을 방기하게 안출한 것으로, 이를 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.In view of the conventional combination of the present invention, the recording starts immediately when recording with a blank tape, that is, a non-recorded tape, and a recording control switch must be pressed when recording with a built-in tape. When the user presses the record button by mistake, the recorded tape is erased. The following description will be made in detail with reference to the accompanying drawings.

제1도에 도시한 바와같이 영상신호입력단자(RY)가 에미터에 접속된 트랜지스터(TRl)의 베이스에 마이콤의 녹화시작신호단자를 접속하여 그의 콜렉터를 콘덴서(C1)를 통해 영상신호처리부(1)의 녹화영상신호출력단자(IN)에 접속하고, 영상신호처리부(1)의 재생영상신호출력 단자(OUT)는 콘덴서(C2)를 통해 저항(R2,R3)및 트랜지스터(TR2)의 베이스에 접속하여 트랜지스터(TR2)의 콜렉터를 접지저항(R5)과, 다이오드(Dl) 및 콘덴서(C3)로된 정류기(2)와 저항(R6)을 통해 앤드게이트(ANDl)의 입측입력단자에 접속하고, 앤드게이트(ANDl)의 타측입력단자에는 녹화제어스위치(SW1)를 접속하여 앤드게이트(ANDl)의 출력단자를 마이콤의 제어신호단자에 접속하여 구성한 것으로, 상기에서 영산신호처리부(1)의 출력단자(○UT)에 영상신호가 출력되지 않을때 트랜지스터(TR2)가 오프되게 저항(R2-R4)의 값을 설정하고, 사용자가 녹화버튼을 누를 경우에 초기 일정시간동안은 테이프를 재생하며, 마이콤은 그의 제어신호단자에 상기 초기일정시간동안 저 전위신호가 입력될때 녹화시작신호단자로 저전위신호를 인가하여 녹화를 시작함과 아울러 그 초기일정시간내에 제어신호단자에 고전위 신호가 입력될때 정지상태로 제어하게 되어 있으며, 도면의 설명중 미설명부호 Vcc는 전원단자이다.As shown in FIG. 1, the recording start signal terminal of the microcomputer is placed on the base of the transistor TRl connected to the emitter of the video signal input terminal RY. Is connected to the recorded video signal output terminal IN of the video signal processor 1 through the capacitor C1, and the reproduced video signal output terminal OUT of the video signal processor 1 is connected to the capacitor C2. Is connected to the bases of the resistors R2 and R3 and the transistor TR2 to connect the collector of the transistor TR2 to the ground resistor R5, the rectifier 2 comprising the diode Dl and the capacitor C3 and the resistor. The input terminal of the AND gate ANDl is connected to the input terminal of the AND gate ANDl through the R6, and the recording control switch SW1 is connected to the other input terminal of the AND gate ANDl so that the output terminal of the AND gate ANDl is the control signal of the microcomputer. Terminals In this case, the value of the resistors R2-R4 is set so that the transistor TR2 is turned off when the video signal is not output to the output terminal (○ UT) of the Youngsan signal processing unit 1. When you press the record button, the tape will be played for a certain period of time. Recording start signal terminal when low potential signal is input to Low-voltage signal is applied to start recording and control signal terminal within the initial time. When the high potential signal is input to the control, it is controlled to the stop state, and in the description of the drawing, reference numeral Vcc is a power terminal.

이와같이 구성된 본 고안의 작용효과를 상세히 설명하면 다음과 같다.Referring to the effects of the present invention configured in this way in detail as follows.

전원단자(Vcc)에 전원이 인가되고, 사용자가 녹화되지 않은 공테이프를 네크부에 내장하여 녹화버튼을 누르면, 그 녹화버튼을 누른 후 초기일정시간동안은 마이콤의 제어에 의해 재생상태로 되나, 이때 공테이프여서 녹화된 신호가 없으므로 영산신호처리부(1)의 출력단자(OUT)에 영산신호가 출력되지 않게되어 트랜지스터(TR2)는 오프상태로 유지되고, 이에 따라 트랜지스터(TR2)의 콜렉터에 저전위 신호가 출력되어 정류기(2)의 출력단자에 저전위 신호가 출력되고, 이 저전위 신호는 저항(R6)을 통해 앤드게이트(ANDl)의 일측입력단자에 인가되므로 그 앤드게이트(AND1)의 출력단자에는 저전위신호가 출력되어 마이콤의 제어신호단자(CS)에 인가된다.When power is applied to the power supply terminal (Vcc) and the user inserts a blank tape into the neck part and presses the recording button, it is in the playback state under the control of the microcomputer for the initial time after pressing the recording button. At this time, since there is no signal recorded because it is a blank tape, the zero signal is not output to the output terminal OUT of the zero signal processing unit 1, so that the transistor TR2 is kept in an off state, and accordingly, the low voltage is collected in the collector of the transistor TR2. The potential signal is output, and a low potential signal is output to the output terminal of the rectifier 2. The low potential signal is applied to one input terminal of the AND gate ANDl through the resistor R6, so that The low potential signal is output to the output terminal and applied to the control signal terminal CS of the microcomputer.

이와 같이 마이콤의 제어신호단자에 초기일정시간동안 계속 저전위 신호가 인가되면, 그 마이콤의 제어에 의해 녹화상태로 만듬과 아울러 녹화시작신호단자에 저전위 신호를 인가하여 트랜지스터(TR1)를 온시키고, 이에 따라 녹화영상신호입력단자(RY)로 입력되는 영상신호가 그 트랜지스터(TRl) 및 콘덴서(C1)를 통해 영상신호처리부(1)에 입력되어 처리된 후 데크부에 내장된 공테이프에 녹화된다.As such, the control signal terminal of the microcomputer If the low potential signal is continuously applied during the initial period of time, the recording state is controlled by the control of the microcomputer and the recording start signal terminal The transistor TR1 is turned on by applying a low potential signal to the video signal input terminal RY so that the video signal input to the video signal input terminal RY is supplied to the video signal processor 1 through the transistor TR1 and the capacitor C1. After input and processing, it is recorded on blank tape embedded in the deck.

그리고, 데크부에 녹화된 테이프를 내장하고, 녹화버튼을 누르면, 그 녹화버튼을 누른 후 초기 일정시간동안은 마이콤의 제어에 의해 재생상태로되어 그 녹화된 테이프를 재생하게 되므로 영상신호처리부(1)의 출력단자(○UT)로 제2도의 (a)에 도시한 바와 같이 영상신호가 출력되고, 이에 따라 그 영상신호가 고전위 및 저전위상태에 따라 트랜지스터(TR2)가 오프 및 온되는 동작을 반복하여 그의 콜렉터로 제2도의 (b)에 도시한 바와같이 펄스신호가 출력되고, 이와같이 출력된 펄스신호중 고전위 펄스신호는 다이오드(Dl)를 통해 콘덴서(C3)에 충전되므로 정류기(2) 에서 고전위 신호가 출력되고, 이 고전위 신호는 저항(R6)을 통해 앤드게이트(ANDl)의 일측입력단자에 인가되며. 이때, 평상시에는 녹화제어스위치(SW1)가 단락되어 전원단자(Vcc)의 전원이 녹화제어스위치(SW1)를 통해 앤드게이트(ANDl)의 타측입력단자에 인가되므로 앤드게이트(ANDl) 의 출력단자에는 고전위 신호가 출력되어 마이콤의 제어신호단자에 인가되고, 이에 따라 마이콤은 정지상태롤 제어하여 테이프를 언로딩시키게 된다. .Then, when the recorded tape is embedded in the deck unit and the recording button is pressed, the recording signal is regenerated under the control of the microcomputer for a predetermined time after the recording button is pressed, and the recorded tape is reproduced. A video signal is output to the output terminal (○ UT) of FIG. 2 as shown in (a) of FIG. 2, and accordingly, the transistor TR2 is turned off and on according to the high potential and low potential states. Repeatedly, a pulse signal is outputted to its collector as shown in (b) of FIG. 2, and the high-potential pulse signal of the outputted pulse signals is charged to the capacitor C3 through the diode Dl, so that the rectifier 2 The high potential signal is outputted at, and the high potential signal is applied to one input terminal of the AND gate ANDl through the resistor R6. At this time, the recording control switch SW1 is normally shorted and the power supply of the power supply terminal Vcc is applied to the other input terminal of the AND gate ANDl through the recording control switch SW1. High-potential signal is output to control signal terminal of microcomputer The microcomputer then controls the stationary state to unload the tape. .

이와같은 상태에서 그 녹화된 데이프를 레크부에 내장하고, 녹화버튼을 누른 후 녹화제어스위치(SW1)를 눌러 개방시키면, 정류기(2)의 출력신호에 상관없이 앤드게이트(ANDl)에서 저전위 신호가 출력되어 마이콤의 제어신호단자에 인가되므로 초기 일정시간이 지날때 마이콤의 제어에 의해 녹화하게 된다. 즉, 이때 마이콤의 제어에 의해 녹화상태로 만듬과 아울러 녹화시작신호단자에 저전위신호를 인가하여 트랜지스터(TR1)를 온시키고, 이에따라 녹화영상신호입력단자(RY)로 입력되는 영상신호는 트랜지스터(TRl) 및 콘덴서(C1)를 통해 영상신호처리부(1)로 입력되어 테이프에 녹화된다.In such a state, if the recorded tape is embedded in the rack portion and the recording button is pressed and then the recording control switch SW1 is opened, the low-potential signal from the AND gate ANDl is independent of the output signal of the rectifier 2. Is output to control signal terminal of microcomputer Since it is applied to, when the initial time passes, it is recorded by the control of microcomputer. In other words, the recording start signal terminal and the recording start signal terminal under the control of the microcomputer The transistor TR1 is turned on by applying a low potential signal to the video signal input terminal RY, and the video signal input to the video signal input terminal RY is input to the video signal processor 1 through the transistor TRl and condenser C1. Recorded on tape.

이상에서 상세히 설명한 바와 같이 본 고안은 녹화된 테이프를 데크부에 내장한 경우에는 녹화버튼을 누른후 녹화제어스위치를 개방시켜야 녹화되므로 사용자가 실수로 녹화버튼을 눌러도 테이프에 녹화된 신호가 지워지지 않게 되는 효과가 있다.As described in detail above, the present invention requires that the recording control switch must be opened after the recording button is pressed in the case where the recorded tape is embedded in the deck, so that the signal recorded on the tape is not deleted even if the user presses the recording button by mistake. It works.

Claims (1)

에미터 및 베이스에 녹화영상신호입력단자(RY) 및 마이콤의 녹화시작신호단자가 접속된 트랜지스터(TR1)의 콜렉터를 영상신호처리부(1) 의 녹화영상신호입력단자(IN) 측에 접속하고, 그 영상신호처리부(1)의 재생영상신호출력단자(OUT)를 트랜지스터(TR2)의 베이스측에 접속하여, 그의 콜렉터를 정류기(2)를 통한 후 녹화제어스위치(SW1)와 함께 앤드게이트(AND1)를 통해 마이콤의 제어신호단자에 접속하여 구성된 것을 특징으로 하는 비디오 카세트 레코더의 녹화제어회로.Recorded video signal input terminal (RY) and micom recording start signal terminal on emitter and base Is connected to the collector video signal input terminal IN of the video signal processor 1, and the reproduced video signal output terminal OUT of the video signal processor 1 is connected to the transistor TR2. ) Is connected to the base side, and its collector is passed through the rectifier 2, and then the control signal terminal of the microcomputer through the AND gate AND1 together with the recording control switch SW1. And a recording control circuit of a video cassette recorder, characterized in that it is connected to.
KR2019860019018U 1986-11-29 1986-11-29 The recording control circuit of video cassette recorder KR900005435Y1 (en)

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Application Number Priority Date Filing Date Title
KR2019860019018U KR900005435Y1 (en) 1986-11-29 1986-11-29 The recording control circuit of video cassette recorder

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Application Number Priority Date Filing Date Title
KR2019860019018U KR900005435Y1 (en) 1986-11-29 1986-11-29 The recording control circuit of video cassette recorder

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KR880010455U KR880010455U (en) 1988-07-27
KR900005435Y1 true KR900005435Y1 (en) 1990-06-18

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