KR930004338B1 - Audio signal dubbing control circuit - Google Patents

Audio signal dubbing control circuit Download PDF

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KR930004338B1
KR930004338B1 KR1019880003610A KR880003610A KR930004338B1 KR 930004338 B1 KR930004338 B1 KR 930004338B1 KR 1019880003610 A KR1019880003610 A KR 1019880003610A KR 880003610 A KR880003610 A KR 880003610A KR 930004338 B1 KR930004338 B1 KR 930004338B1
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recording
head
signal
amplifier
hsw
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KR1019880003610A
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KR890015236A (en
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이승억
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주식회사 금성사
최근선
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/02—Analogue recording or reproducing

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  • Signal Processing (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

The circuit for the camcoder records the voice signal on one or both tracks of the video tape according to the selection of the magnetic head so that the dubbing or effect signal can be inserted on the vacant track if the original signal is recorded on one track. An output tap of an AND gate (AD1) connected by a recording signal input tap (REC) and a head selection signal input tap (HSI) is connected to an input tap of an oscillator (OSC).

Description

음성신호 더빙 제어회로Audio signal dubbing control circuit

제1(a)도, 제1(b)도는 종래의 음성신호 녹음/재생 회로도.1 (a) and 1 (b) are conventional audio signal recording / reproducing circuit diagrams.

제2(a)도, 제2(b)도는 본 발명의 음성신호 더빙 제어회로도.2 (a) and 2 (b) are audio signal dubbing control circuit diagrams of the present invention.

제3도는 본 발명에 의한 비디오 테이프 트랙을 보인 설명도.3 is an explanatory diagram showing a video tape track according to the present invention.

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

AH10,AH11: 음성헤드 SW1,SW10,SW11: 녹음/재생선택스위치AH 10 , AH 11 : Voice head SW 1 , SW 10 , SW 11 : Record / playback selection switch

HSW10,HSW'10,HSW11,HSW'11: 헤드선택스위치 HSW 10, HSW '10, HSW 11, HSW' 11: head select switch

본 발명은 카메라 일체형 비디오 카세트 레코더에 있어서, 음성신호 더빙 제어회로에 관한 것으로, 특히 음성헤드 선택에 따라 비디오 테이프의 음성트랙을 두개의 트랙으로 분할하여 음성신호를 두 트랙 동시 및 각각 한개의 트랙에 녹음시킬 수 있게 함으로써 효율적인 더빙을 할 수 있게 한 음성신호 더빙 제어회로에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio signal dubbing control circuit in a camera-integrated video cassette recorder. In particular, an audio signal of a video tape is divided into two tracks according to the selection of a voice head. The present invention relates to an audio signal dubbing control circuit that enables efficient dubbing by enabling recording.

종래의 비디오 카세트 레코더의 음성신호 녹음/재생 회로도는 제1(a)도, 제1(b)도에 도시한 바와 같이 음성신호 입력단자(ASI)가 접속된 증폭기(1)의 출력축을 AGC(Automatic Gain Control : AGC) 증폭기(2)의 입력단자에 접속하여 그의 출력단자를 녹음/재생선택스위치(SW1)의 녹음단(R1) 및 AGC 검파기(3)를 통해 그의 제어단자(CS1)에 궤환 접속함과 아울러 녹음증폭기(4)를 다시 통해 녹음/재생선택스위치(SW2)의 녹음단자(R2)에 접속하고, 가동단자가 음성헤드(AH1)에 접속된 녹음/재생선택스위치(SW2)의 재생단자(P2)는 재생증폭기(6)를 통해 녹음/재생선택스위치(SW1)의 재생단자(P1)에 접속하고, 녹음/재생선택스위치(SW1)의 가동단자는 증폭기(5)를 통해 선택스위치(SW3)의 가동단자에 접속하여 구성한 것으로, 도면의 설명중 SP는 스피커이고, JA는 이어폰잭이다.In the conventional audio cassette recording / reproducing circuit diagram of the video cassette recorder, as shown in FIGS. 1A and 1B, the output shaft of the amplifier 1 to which the audio signal input terminal ASI is connected is represented by AGC ( Automatic Gain control: its control terminal via a recording stage (R 1) and the AGC detector 3 of the AGC) amplifier (2) record / playback selection switch (SW 1) to its output terminal connected to the input terminal of the (CS 1 ) Is connected to the recording terminal (R 2 ) of the recording / playback selection switch (SW 2 ) through the recording amplifier (4), and the recording / playback is connected to the audio head (AH 1 ). reproduction terminal of the selection switch (SW 2) (P 2) is connected to the reproduction terminal (P 1) of the recording / reproducing selector switch (SW 1) through the reproduction amplifier 6, and the recording / reproduction selection switch (SW 1) The movable terminal of is connected to the movable terminal of the selection switch SW 3 through the amplifier 5, where SP is a speaker and JA is an earphone jack. .

이와 같이 구성된 종래의 회로는 음성신호 입력단자(ASI)에 음성신호가 입력되고, 이 입력되는 음성신호를 사용자가 녹음을 하기 위해서 녹음/재생선택스위치(SW1)(SW2)를 녹음단자(R1)(R2)에 단락시키면, 상기 입력되는 음성신호는 증폭기(1)를 통해 증폭된 후 다시 AGC 증폭기(2)를 통해 일정한 레벨로 증폭되어 출력되고, 그 출력된 신호는 AGC 검파기(3)를 다시 통해 검파된 후 AGC 증폭기(2)의 제어단자(CS1)에 궤환입력되어 일정레벨의 음성신호로 이득이 조절되고, 그 조절된 음성신호는 녹음증폭기(4), 녹음/재생선택스위치(SW2)를 통해 음성헤드(AH1)에 녹음됨과 아울러 녹음/재생선택스위치(SW1) 및 증폭기(5)를 통해 선택스위치(SW3)의 가동단자에 인가되므로 사용자가 선택스위치(SW3)의 선택에 따라 스피커(SP) 및 이어폰잭(JA)으로 출력된다.In the conventional circuit configured as described above, a voice signal is input to the voice signal input terminal ASI, and a recording / playback selection switch SW 1 SW 2 is used to record the input voice signal. When R 1 ) is short-circuited to R 2 , the input voice signal is amplified by the amplifier 1 and then amplified to a constant level by the AGC amplifier 2, and the output signal is output by the AGC detector ( After detecting again through 3), the gain is fed back to the control terminal CS 1 of the AGC amplifier 2 and the gain is adjusted to a voice signal of a predetermined level, and the adjusted voice signal is recorded in the recording amplifier 4 and recording / reproducing. selector switch as soon recording the audio heads (AH 1) through (SW 2) as well as recording / reproduction selection switch (SW 1) and the user selects the switch so applied to the movable terminal of the selection switch (SW 3) through the amplifier (5) According to the selection of (SW 3 ) is output to the speaker (SP) and earphone jack (JA).

그리고, 상기와 반대로 녹음/재생선택스위치(SW1)(SW2)를 재생단자(P1)(P2)에 단락시켜 재생을 할 경우에는 음성헤드(AH1)를 통해 재생된 신호는 녹음/재생선택스위치(SW2)를 통한 후, 재생증폭기(6)를 통해 증폭되어 녹음/재생선택스위치(SW1) 및 증폭기(5)를 다시 통한 후 증촉된 신호로 선택스위치(SW3)의 선택에 따라 스피커(SP) 및 이어폰잭(JA)으로 출력되게 구성되었으나, 이는 음성신호의 더빙 기능을 가진 비디오 카세트 레코더일지라도 비디오 카세트 레코더 1대만으로 더밍을 할 경우에는 실제 녹음된 음성신호의 망실을 초래하게 되고, 또한 카메라 일체형 비디오 카세트 레코더를 이용하여 촬영한 경우 촬영 대상에 따라 음성신호가 연속적으로 녹음되지 않는 상태로 촬영하게 되는 수가 많아 테이프의 재생시 사용자로 하여금 지루함을 주게되고, 테이프에 효과음이나 다른 음성신호와 주음성신호를 더빙하기 위해서는 2대의 비디오 카세트 레코더가 필요하게 되었으므로 사용자에게 번거로움 내지는 불편함을 주는 결함이 있었다.And, if the, as opposed to short-circuit the recording / reproduction selection switch (SW 1) (SW 2) to the reproduction terminal (P 1) (P 2) to the playback signal reproduced through the audio heads (AH 1) is recorded After the / playback selection switch (SW 2 ), amplified by the playback amplifier (6) through the recording / playback selection switch (SW 1 ) and the amplifier (5) again, the signal of the selection switch (SW 3 ) Although it is configured to be output to the speaker (SP) and earphone jack (JA) according to the selection, this means that even if the video cassette recorder with the dubbing function of the audio signal is dummed with only one video cassette recorder, the loss of the actual recorded audio signal is lost. In addition, when shooting with a camera-integrated video cassette recorder, the voice signal is not recorded continuously depending on the shooting target, which causes users to be bored when playing the tape. And, in order to tape dubbing the sound effects or other audio signal and the main audio signal because it requires the two video cassette recorders were defective to the discomfort naejineun hassle for the user.

본 발명은 이와 같은 종래의 결함을 감안하여, 사용자가 음성헤드 선택에 따라 비디오 테이프의 음성트랙을 두개의 트랙을 나누어 음성신호를 두개의 트랙 동시 및 각각 한개의 트랙에 녹음시키게 하고, 그 녹음된 신호를 재생시에도 선택적으로 재생할 수 있게 창안한 것으로 이를 첨부한 도면에 의하여 상세히 설명하면 다음과 같다.In view of such a conventional deficiency, the present invention allows a user to divide a voice track of a video tape into two tracks and record a voice signal on two tracks simultaneously and one track respectively according to the voice head selection. The invention can be selectively reproduced even when the signal is reproduced, which will be described in detail with reference to the accompanying drawings.

제2(a)도, 제2(b)도는 본 발명의 음성신호 더빙 제어회로도로서 이에 도시한 바와 같이 증폭기(1)(5), 녹음 및 재생증폭기(4)(6), AGC 증폭기(2), AGC 검파기(3), 녹음/재생선택스위치(SW1), 음성헤드(AH10), 발진부(OSC) 및 음성소거헤드(AEH1)로 된 음성신호 녹음/재생회로에 있어서, 상기 발진부(OSC)의 입력측에 녹음신호 입력단자(REC) 및 헤드선택신호 입력단자(HSI)가 접속된 앤드게이트(AD1)의 출력단자를 접속하는 한편, 상기 녹음증폭기(4)의 출력단자는 헤드선택스위치(HSW10)(HSW11)를 각각 통해 가동단자가 음성헤드(AH10)(AH11)에 접속된 녹음/재생선택스위치(SW10)(SW11)의 녹음단자(R10)(R11)에 각각 접속하고, 그 녹음/재생선택스위치(SW10)(SW11)의 재생단자(P10)(P11)는 헤드선택스위치(HSW'10)(HSW'11)를 각각 통한 후 가산기(10)를 통해 상기 재생증폭기(6)의 입력측에 접속하여 구성한 것으로, 상기 헤드선택스위치(HSW10,HSW'10)(HSW11,HSW'11)는 서로 연동되는 스위치이며, 상기 녹음신호 입력단자(REC)에는 녹음시 고전위신호가 인가되게 하고, 헤드선택신호 입력단자(HSI)에는 상기 음성헤드(AH11) 선택시만 저전위신호가 인가되게 하고, 그 외에는 고전위신호가 인가되게 한다.2 (a) and 2 (b) are the audio signal dubbing control circuit diagrams of the present invention, as shown therein an amplifier (1) (5), a recording and reproduction amplifier (4) (6), and an AGC amplifier (2). ), An AGC detector (3), a recording / playback selection switch (SW 1 ), a voice head (AH 10 ), an oscillator (OSC) and a voice mute head (AEH 1 ), wherein the oscillator The output terminal of the AND gate AD 1 to which the recording signal input terminal REC and the head selection signal input terminal HSI are connected is connected to the input side of the OSC, while the output terminal of the recording amplifier 4 is head selected. Recording terminals (R 10 ) (R) of recording / playback selection switch (SW 10 ) (SW 11 ) with movable terminals connected to voice head (AH 10 ) (AH 11 ) through switches (HSW 10 ) (HSW 11 ), respectively. each connected to 11), then through the recording / reproduction selection switch (SW 10) (reproduction terminal (P 10) (P 11) is a head select switch (HSW '10) (HSW' 11) of the SW 11) respectively The regenerative amplifier 6 through an adder 10. Is to be configured by connecting the input side, the said head select switch (HSW 10, HSW '10) (HSW 11, HSW' 11) is a switch that works with each other, the recording signal input terminal (REC) is the high potential for recording signals The low potential signal is applied to the head selection signal input terminal HSI only when the voice head AH 11 is selected, and the high potential signal is applied to the head selection signal input terminal HSI.

이와 같이 구성된 본 발명의 작용효과를 상세히 설명하면 다음과 같다.Referring to the effects of the present invention configured as described above in detail.

음성신호 입력단자(ASI)에 음성신호가 입력되고, 사용자가 음성헤드(AH10)에 녹음을 하기 위해서 헤드선택스위치(HSW10)(HSW'10)를 단락시키고, 녹음/재생선택스위치(SW10)(SW1)를 녹음단자(R10)(R1)에 단락시키면, 녹음신호 및 헤드선택입력단자(REC)(HSI)에 모두 고전위신호가 입력되어 앤드게이트(AD1)를 통해 고전위신호로 발진부(OSC)에 인가되므로 발진부(OSC)가 구동되고, 이에 따라 음성소거헤드(AEH1)가 동작되면서 이전에 테이프에 녹음된 음성신호가 소거됨과 아울러 음성신호 입력단자(ASI)에 입력되는 음성신호는 증폭기(1)를 통해 증폭되고, 그 증폭된 신호는 AGC 증폭기(2)를 다시 통한 후 AGC 검파기(3)를 통해 검파 및 정류되어 AGC 증폭기(2)의 제어단자(CS1)에 궤환 입력되므로 일정레벨의 음성신호로 이득이 조절되고, 그 이득이 조절된 음성신호는 녹음증폭기(4) 및 헤드선택스위치(HSW10) 녹음/재생선택스위치(SW10)를 통해 음성헤드(AH10)에 의해 제3도에 도시된 바와 같이 테이프의 음성 A 트랙에 녹음되는 한편, 이때 음성 B 트랙에는 녹음된 음성신호가 소거된 무녹음 트랙으로 남게되고, 상기 AGC 증폭기(2)에서 출력되는 신호는 녹음/재생선택스위치(SW1) 및 증폭기(5)를 통해 선택스위치(SW3)의 가동단자에 인가되어 그 스위치(SW3)의 선택단자(a3)(b3)의 선택에 따라 음성신호가 스피커(SP) 및 이어폰잭(JA)으로 출력되게 된다.Audio the audio signal inputted to the signal input terminal (ASI), users and short-circuit the head select switch (HSW 10) (HSW '10 ) to a recording to a speech head (AH 10), record / playback selection switch (SW 10 ) When SW 1 is shorted to the recording terminal R 10 (R 1 ), a high potential signal is inputted to both the recording signal and the head selection input terminal REC (HSI), and then through the AND gate AD 1 . Since the oscillator OSC is driven as a high potential signal, the oscillator OSC is driven. As a result, the voice erase head AEH 1 is operated to erase the voice signal previously recorded on the tape, and the voice signal input terminal ASI. The audio signal inputted to the amplifier 1 is amplified by the amplifier 1, and the amplified signal is again passed through the AGC amplifier 2 and then detected and rectified by the AGC detector 3 to control terminal CS of the AGC amplifier 2 1 ) Since the feedback is input, the gain is controlled by a certain level of audio signal, and the gain-adjusted voice signal is The recording amplifier 4 and the head selection switch HSW 10 are recorded to the audio A track of the tape as shown in FIG. 3 by the audio head AH 10 via the recording / playback selection switch SW 10 . At this time, the voice B track remains as a non-recorded track in which the recorded voice signal is erased, and the signal output from the AGC amplifier 2 is selected through the recording / playback selection switch SW 1 and the amplifier 5. 3 ) is applied to the movable terminal of the switch (SW 3 ) and the audio signal is output to the speaker (SP) and earphone jack (JA) in accordance with the selection of the selection terminal (a 3 ) (b 3 ).

그리고, 상기와 반대로 음성헤드(AH11)에 녹음하고자 할 경우에 헤드선택스위치(HSW11)(HSW'11)를 단락시키면, 헤드선택입력단자(HSI)에 저전위신호가 입력되어 앤드게이트(AD1)의 타측입력단자에 입력되므로 그의 일측 입력신호에 관계없이 앤드게이트(AD1)의 출력단자에 저전위신호가 출력되고, 이에 따라 발진부(OSC)의 구동이 정지되어 음성소거헤드(AEH1)의 동작이 정지되는 한편, 이때 상기와 동일하게 AGC 증폭기(2)를 통해 일정레벨의 음성신호로 이득이 조절된 신호는 녹음증폭기(4) 및 헤드선택스위치(HSW11), 녹음/재생선택스위치(SW11)를 통해 음성헤드(AH11)에 의해 비디오 테이프 음성 B 트랙에만 녹음되고, 또한 상기 AGC 증폭기(2)를 통한 신호는 녹음/재생선택스위치(SW1) 및 증폭기(5)를 통해 증폭되어 선택스위치(SW3)의 가동단자에 인가되므로 그 스위치(SW3)의 선택에 따라 음성신호가 스피커(SP) 및 이어폰잭(JA)으로 출력되게 된다.In addition, the as opposed Shorting the audio heads (AH 11) head select switch (HSW 11) (HSW '11 ) if you want to record on, is a low potential signal is input to the head selection inputs (HSI) AND gate ( is input to the other input terminal of the AD 1), regardless of its one input aND gate (the low potential signal to the output terminal of the AD 1) is output, so that the driving of the oscillation unit (OSC) is still voice erasing head (AEH 1 ) is stopped, while the signal whose gain is adjusted to the audio signal of the predetermined level through the AGC amplifier 2 in the same manner as above, the recording amplifier 4 and the head select switch (HSW 11 ), recording / playback Only the video tape voice B track is recorded by the voice head AH 11 via the selection switch SW 11 , and the signal through the AGC amplifier 2 is also recorded / playback selection switch SW 1 and the amplifier 5. is amplified through the doemeu applied to the movable terminal of the selection switch (SW 3) The audio signal is output to the speaker (SP), and an earphone jack (JA) at the option of the switch (SW 3).

또한 음성헤드(AH10)(AH11)에 의해 녹음하고자할 경우에 헤드선택스위치(HSW10)(HSW11)를 모두 단락시키면, 상기에서 설명한 바와 같이 음성헤드(AH10)만을 선택한 경우와 동일하게 음성소거헤드(AEH1)가 동작되면서 이전에 녹음된 음성신호가 소거됨과 아울러 상기에서 설명한 바와 같이 녹음증폭기(4)를 통해 증폭된 신호는 헤드선택스위치(HSW10)(HSW11) 및 녹음/재생선택스위치(SW10)(SW11)를 각각 통해 음성헤드(AH10)(AH11)에 의해 비디오 테이프의 음성 A, B 트랙에 동시 녹음되고, 스피커(SP) 및 이어폰잭(JA)으로 출력되는 신호는 상기에서 설명한 바와 동일하게 선택스위치(SW3)의 선택에 따라 출력된다.In addition, if you want to record by the voice head AH 10 (AH 11 ), shorting all of the head selection switches HSW 10 and HSW 11 is the same as selecting only the voice head AH 10 as described above. As the voice mute head AEH 1 operates, the previously recorded voice signal is erased, and the signal amplified by the recording amplifier 4 as described above is transferred to the head select switch HSW 10 and the HSW 11 . Recorded simultaneously to the audio A and B tracks of the video tape by the audio head (AH 10 ) (AH 11 ) via the / playback selection switch (SW 10 ) (SW 11 ), and the speaker (SP) and earphone jack (JA) The signal output to is output in accordance with the selection of the selection switch SW 3 as described above.

그리고, 상기와 반대로 음성헤드(AH10)에 녹음된 신호를 재생하고자 할 경우에 헤드선택스위치(HSW10)(HSW'10)를 단락시키고, 녹음/재생선택스위치(SW10)(SW1)의 가동단자를 재생단자(P10)(P1)에 단락시키면, 음성헤드(AH10)에 의해 재생되는 신호는 녹음/재생 및 헤드선택스위치(SW1)(HSW10), 가산기(10)를 통한 후 재생증폭기(6)를 통해 증폭되고, 그 증폭된 신호는 녹음/재생선택스위치(SW1) 및 증폭기(5)를 통해 다시 증폭된 후 선택스위치(SW3)의 가동단자를 선택단자(a3)(b3)에 단락시킴에 따라 스피커(SP) 및 이어폰잭(JA)으로 출력된다.In addition, the as opposed to audio heads (AH 10) a To play back a signal and separate the head select switch (HSW 10) (HSW '10 ), recording / reproduction selection switch (SW 10) recorded in the (SW 1) If the movable terminal of is shorted to the reproducing terminal P 10 (P 1 ), the signal reproduced by the voice head AH 10 is recorded / played back and the head selection switch SW 1 (HSW 10 ) and the adder 10. And then amplified by the reproducing amplifier (6), the amplified signal is amplified again through the recording / playback selection switch (SW 1 ) and amplifier (5) and then the operating terminal of the selection switch (SW 3 ) By shorting to (a 3 ) and (b 3 ), it is output to the speaker SP and the earphone jack JA.

또한, 음성헤드(AH11)에 녹음된 신호를 재생하고자 할 경우에 헤드선택스위치(HSW11)(HSW'11)를 단락시키고, 녹음/재생선택스위치(SW11)(SW1)의 가동단자를 재생단자(P11)(P1)에 단락시키면, 음성헤드(AH11)에 의해 재생되는 신호는 녹음/재생 및 헤드선택스위치(HSW11)(HSW'11), 가산기(10)를 통한 후 재생증폭기(6)를 통해 증폭되고, 그 증폭된 신호는 녹음/재생선택스위치(SW1) 및 증폭기(5)를 통해 다시 증폭된 후 선택스위치(SW3)의 선택에 따라 스피커(SP) 및 이어폰잭(JA)으로 출력된다.Further, the movable terminal of the audio head when you want to play back the recorded signal on and short-circuit the head select switch (HSW 11) (HSW '11 ), recording / reproduction selection switch (SW 11) (SW 1) to (AH 11) a reproduction terminal (P 11) (P 1) when short-circuited, the audio heads (AH 11) through the signal selected recording / reproducing and the head switch (HSW 11) (HSW '11 ), the adder 10 to be reproduced by the After the amplification through the reproduction amplifier (6), the amplified signal is amplified again through the recording / playback selection switch (SW 1 ) and the amplifier (5) and then the speaker (SP) according to the selection of the selection switch (SW 3 ) And it is output to the earphone jack (JA).

그리고, 음성헤드(AH10)(AH11)에 녹음된 신호를 모두 재생하고자 할 경우에 헤드선택스위치(HSW10,HSW'10)(HSW11,HSW'11)를 단락시키고, 녹음/재생선택스위치(SW10)(SW11)(SW1)의 가동단자를 재생단자(P10)(P11)(P1)에 단락시키면, 제3도에 도시한 바와 같이 비디오 테이프의 음성 A,B 트랙에 녹음된 신호는 음성헤드(AH10)(AH11)에 의해 재생되어 녹음/재생 및 헤드선택스위치(SW10)(SW11)(HSW'10)(HSW'11)를 각각 통해 가산기(10)에서 합성된 후 재생증폭기(6)를 통해 증폭되고, 그 증폭된 신호는 녹음/재생선택 스위치(SW1) 및 증폭기(5)를 통해 다시 증폭된 후 선택스위치(SW3)의 선택에 따라 스피커(SP) 및 이어폰잭(JA)으로 출력된다.Then, the audio heads (AH 10) (AH 11) to the selection when you want to play all of the recorded signal the head switch (HSW 10, HSW '10) (HSW 11, HSW' 11) and short-circuit, and a record / playback selection If the movable terminal of the switch SW 10 (SW 11 ) (SW 1 ) is short-circuited to the reproducing terminal P 10 (P 11 ) (P 1 ), as shown in FIG. the signals recorded on the tracks through the audio heads (AH 10) is reproduced by the (AH 11) recording / playback, and head selection switch (SW 10) (SW 11) (HSW '10) (HSW' 11) , each adder ( 10) and then amplified by the reproducing amplifier (6), the amplified signal is amplified again through the recording / playback selection switch (SW 1 ) and the amplifier (5) and then to the selection of the selection switch (SW 3 ) Therefore, the speaker SP and the earphone jack JA are output.

이상에서 설명한 바와 같이 본 발명은 사용자가 음성헤드 선택에 따라 비디오 테이프의 음성트랙을 두개의 트랙으로 나누어 음성신호를 두 트랙동시 및 각각 한개의 트랙에 녹음 및 재생할 수 있게 함으로써 사용자 취향에 따라 야외녹화시 테이프의 한개의 음성 트랙에만 녹음시키고, 한개의 음성 트랙은 소거한 무 녹음 구간으로 두어 편집시 그 음성트랙에 효과음을 녹음할 수 있게 되고, 또한 재생시 사용자의 선택에 따라 원음과 효과음을 동시에 또는 각각 청취자 취향에 맞게 청취할 수 있게 됨은 물론 1대의 비디오 카세트 레코더로서 더빙을 할 수 있게 되는 효과가 있다.As described above, according to the present invention, the user can divide the audio track of the video tape into two tracks according to the selection of the voice head, so that the audio signal can be recorded and played back on both tracks and one track respectively. Only one voice track of the time tape is recorded, and one voice track can be recorded as a non-recorded interval so that the sound can be recorded on the voice track during editing. Alternatively, it is possible to listen to each listener's taste as well as to dub as one video cassette recorder.

Claims (1)

증폭기(1)(5), 녹음 및 재생증폭기(4)(6), AGC 증폭기(2), AGC 검파기(3), 녹음/재생선택스위치(SW1), 음성헤드(AH10), 발진부(OSC) 및 음성소거헤드(AEH11)로된 음성신호 녹음/재생회로에 있어서, 상기 발진부(OSC)의 입력측에 녹음신호 입력단자(REC) 및 헤드선택신호 입력단자(HSI)가 접속된 앤드게이트(AD1)의 출력단자를 접속하는 한편, 상기 녹음증폭기(4)의 출력단자는 헤드선택스위치(HSW10)(HSW11)를 각각 통해 가동단자가 음성헤드(AH10)(AH11)에 접속된 녹음/재생선택스위치(SW10)(SW11)의 녹음단자(R10)(R11)에 각각 접속하고, 그 녹음/재생선택스위치(SW10)(SW11)의 재생단자(P10)(P11)는 헤드선택스위치(HSW'10)(HSW'11)를 각각 통한 후 가산기(10)를 통해 재생증폭기(6)의 입력측에 접속하여 구성함을 특징으로 하는 음성신호 더빙 제어회로.Amplifier (1) (5), recording and playback amplifier (4) (6), AGC amplifier (2), AGC detector (3), recording / playback selection switch (SW 1 ), voice head (AH 10 ), oscillator ( An audio signal recording / reproducing circuit composed of an OSC and an audio scavenging head AEH 11 , the AND gate having a recording signal input terminal REC and a head selection signal input terminal HSI connected to an input side of the oscillator OSC. While the output terminal of AD 1 is connected, the output terminal of the recording amplifier 4 is connected to the audio head AH 10 and AH 11 through the head selection switch HSW 10 and HSW 11 , respectively. the reproduction terminal of the recording terminal (R 10) connected to the (R 11), and the recording / reproduction selection switch (SW 10) (SW 11) for recording / reproducing selector switch (SW 10) (SW 11) (P 10 ) (P 11), the head selection switch (HSW '10) (HSW' 11) the audio signal dubbing control circuit, characterized in that the configuration and connected to the input side of the reproduction amplifier 6 via the adder 10, and then through each .
KR1019880003610A 1988-03-31 1988-03-31 Audio signal dubbing control circuit KR930004338B1 (en)

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KR1019880003610A KR930004338B1 (en) 1988-03-31 1988-03-31 Audio signal dubbing control circuit

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KR890015236A KR890015236A (en) 1989-10-28
KR930004338B1 true KR930004338B1 (en) 1993-05-26

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