KR910001289Y1 - Sound selection circuit for multi-screen type vtr - Google Patents
Sound selection circuit for multi-screen type vtr Download PDFInfo
- Publication number
- KR910001289Y1 KR910001289Y1 KR2019870018965U KR870018965U KR910001289Y1 KR 910001289 Y1 KR910001289 Y1 KR 910001289Y1 KR 2019870018965 U KR2019870018965 U KR 2019870018965U KR 870018965 U KR870018965 U KR 870018965U KR 910001289 Y1 KR910001289 Y1 KR 910001289Y1
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- KR
- South Korea
- Prior art keywords
- voice
- signal
- output
- screen
- audio signal
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Classifications
-
- 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
-
- 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
- H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
- H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen
-
- 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
- H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
- H04N5/607—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for more than one sound signal, e.g. stereo, multilanguages
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
- H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Signal Processing For Recording (AREA)
- Studio Circuits (AREA)
Abstract
내용 없음.No content.
Description
첨부도면은 본 고안의 실시예 회로도.The accompanying drawings show an embodiment circuit diagram of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 구동부 2 : 음성선택부1: driver 2: voice selector
3 : 음성출력부 AS : 음성분리기3: voice output unit AS: voice separator
FF : 플립플롭 R1-R10 : 저항FF: flip-flop R1-R10: resistor
C1-C3 : 콘덴서 TR1-TR3 : 트랜지스터C1-C3: Capacitor TR1-TR3: Transistor
NT : 인버어터 SW1 : 선택스위치NT: Inverter SW1: Selection switch
본 고안은 브이티알, 특히 사각의 화면 한쪽에 실화면을 축소한 소화면을 삽입하여 브이티알의 테이프재생화면과 텔레비젼 방송화면을 모화면 및 자화면으로 함께 시청할 수 있는 다중화면(PIP : Picture In Picture)방식 브이티알에 있어서, 모화면과 자화면의 위치를 바꾸지 않고 각 화면의 음성을 선택할 수 있도록 한 다중화면방식 브이티알의 음성선택회로에 관한 것이다.The present invention is to insert a small screen with a real screen on one side of VT, especially a square screen, so that VT's tape playback screen and TV broadcasting screen can be watched together on the mother screen and the child screen. In the picture type VTIAL, it relates to a multiscreen type VTIAL voice selection circuit which enables to select the voice of each screen without changing the positions of the mother screen and the subscreen.
종래의 다중화면방식 브이티알에서는, 출력되는 음성이 모화면 또는 자화면에 고정되어 있어 음성을 절환하기 위하여는 모화면과 자화면의 위치를 바꾸는 화면의 절환이 필요하며, 음성절환만을 할 수 있는 기능이 없기 때문에 사용상 불편한 폐단이 있었다.In the conventional multi-screen VTial, the outputted voice is fixed to the mother screen or the child screen, and in order to switch the voice, it is necessary to switch the screen for changing the position of the mother screen and the child screen, and can change only the voice. Because of its lack of function, it was inconvenient to use.
본 고안의 목적은 이와 같은 폐단을 해결하기 위해 음성선택용 스위치를 사용하여 모화면 및 자화면중 원하는 화면의 음성을 자유롭게 선택하여 청취할 수 있는 다중화면 방식 브이티알의 음성선택회로를 제공하기 위한 것이다.The purpose of the present invention is to provide a voice selection circuit of a multi-screen VTI that can freely select and listen to the voice of the desired screen from the mother screen and the child screen by using a voice selection switch to solve the above-mentioned disadvantages. will be.
이하, 첨부도면에 의해 본 고안의 구체적인 구성 및 작용효과를 상세히 설명한다.Hereinafter, the specific configuration and effect of the present invention by the accompanying drawings will be described in detail.
튜너 (TN)를 통한 텔레비젼의 복합영상신호와 브이티알의 헤드(HD)를 통한 테이프재생신호에서 음성신호만을 분리하는 음성분리기 (AS)와 음성분리기 (AS)에서 분리된 텔레비젼 음성신호(PA) 및 테이프 재생 음성신호(TA)를 신호증폭하는 음성출력부(3)로 된 회로에 있어서, 음성선택스위치 (SW1), 이 음성선택스위치 (SW1)의 출력 신호를 미분하기 위한 미분콘덴서 (C1) 및 저항(R2)으로 된 제1미분회로, 이 제1미분회로의 출력에 의해 토글되는 D-플립플롭(FF), 최초전원"온"시 상기 D-플립플롭(FF)을 리세트 시키기 위한 미분 콘덴서 (C2) 및 저항(R3)으로 된 제2미분회로로 구성된 구동부(1), 그리고 상기 D-플립플롭(FF)의 출력에 의해 동작제어되며 각 콜렉터에 상기 음성분리기 (AS)의 테이프재생음성신호(TA) 및 텔레비젼 음성신호(PA)가 각각 인가되게 연결된 트랜지스터 (TR1) (TR2), 이들 트랜지스터 (TR1) (TR2)를 서로 역동작 시키기 위하여 각 베이스간에 연결된 인버어터 (NT) 및 바이어스 저항(R4-R7)으로 구성된 음성선택부(2)로 된다.Separated audio signal from the composite video signal of the television through the tuner (TN) and tape playback signal through the head of HD (HD) and separated audio signal from the audio separator (AS) And a voice output section (3) for amplifying the tape reproducing voice signal (TA), comprising: a voice selection switch (SW1) and a differential capacitor (C1) for differentiating the output signal of the voice selection switch (SW1). And a first differential circuit of resistor R2, a D-flip flop FF toggled by the output of the first differential circuit, for resetting the D-flip flop at initial power-on " on " A drive unit 1 composed of a second differential circuit composed of a differential capacitor C2 and a resistor R3, and an output of the D-flip-flop FF, each of which is taped to the collector of the voice separator AS. Transistors connected such that a reproduction sound signal TA and a television sound signal PA are respectively applied (TR1) (TR2), and these transistors (TR1) and (TR2) in order to reverse operation with each other, the voice selector (2) consisting of an inverter (NT) and a bias resistor (R4-R7) connected between each base.
미설명 부호 B+는 직류전원, 4는 영상선택부, AM은 음성증폭부, 5는 제어부이다.Reference numeral B + is a DC power supply, 4 is an image selecting unit, AM is an audio amplifier, and 5 is a control unit.
이와 같이 구성되는 본 고안에 있어서. 브이티알에서 테이프를 재생중일 경우에는 음성분리기 (AS)에서 텔레비젼 음성 신호(PA) 및 테이프재생 음성신호(TA)가 함께 출력되어 선택부(2)내의 트랜지스터 (TR1) (TR2)의 콜렉터에 인가된다.In the present invention configured as described above. When the tape is being played in VTI, the TV audio signal PA and the tape play audio signal TA are output together by the voice separator AS and applied to the collector of the transistors TR1 and TR2 in the selection unit 2. do.
한편, 구동부(1)내의 D-플립플롭(FF)의 출력 (θ)의 소기치는 최초 전원이 "온"시 B+전원이 콘덴서 (C2) 및 저항(R3)으로 미분된 신호가 D-플립플롭(FF)의 클리어단자(CL)에 인가됨에 따라 이 D-플립플롭(FF)의 출력 (θ)이 "로우"레벨로 된다. 이 "로우"레벨신호는 음성선택부(2)에 인가되므로 트랜지스터 (TR1)는 "오프"되고 인버어터(NT)에서 반전된 "하이"레벨신호가 트랜지스터(TR2)의 베이스에 인가됨에 따라 트랜지스터(TR2)는 도통하게 된다.On the other hand, the desired value of the output θ of the D-flip flop FF in the drive unit 1 is a D-flip signal in which the B + power supply is differentiated into the capacitor C2 and the resistor R3 when the initial power supply is "on". As it is applied to the clear terminal CL of the flop FF, the output? Of this D-flop flop FF becomes a "low" level. This " low " level signal is applied to the voice selector 2, so that the transistor TR1 is " off " and the transistor as the " high " level signal inverted in the inverter NT is applied to the base of the transistor TR2. TR2 becomes conductive.
따라서, 텔레비젼 음성신호(PA)는 도통상태의 트랜지스터 (TR2)를 통해 접지로 바이패스되는 반면, 테이프 재생신호(TA)만이 저항(R9)을 통해 출력부(3)에 입력되고, 이에 의해 테이프재생음성신호(TA)가 스피이커 (도시되지 않음)를 통해 출력된다.Thus, the television audio signal PA is bypassed to ground through the transistor TR2 in the conductive state, while only the tape reproduction signal TA is input to the output unit 3 through the resistor R9, whereby the tape The reproduction sound signal TA is output through a speaker (not shown).
이와 같은 상태에서, 텔레비젼방송 화면인 자화면의 음성을 선택하기 위해 구동부(1)내의 선택스위치 (SW1)를 누르면, 콘덴서 (C1) 및 저항(R1)을 통하여 B+전원의 미분된 신호가 D-플립플롭(FF)의 입력단자(D)에 인가되고, 이에 의해 D-플립플롭(FF)의 출력이 "로우"레벨에서 "하이"레벨로 변환된다. 이 구동부(1)의 "하이"레벨 출력신호가 선택부(2)내의 바이어스저항(R4) (R5)을 통해 트랜지스터 (TR1)의 베이스에 인가되어 이 트랜지스터 (TR1)를 도통시킴과 동시에 인버어터(NT)를 통해 반전된 "로우"레벨신호가 바이어스 저항(R6) (R7)을 통해 트랜지스터 (TR2)에 인가되므로 이 트랜지스터 (TR2)는 "오프"된다.In such a state, when the selection switch SW1 in the driving unit 1 is selected to select the audio of the sub picture, which is a television broadcast screen, the differential signal of B + power is supplied through the capacitor C1 and the resistor R1. Is applied to the input terminal D of the flip-flop FF, whereby the output of the D-flop flop FF is converted from the "low" level to the "high" level. The "high" level output signal of the drive unit 1 is applied to the base of the transistor TR1 through the bias resistors R4 and R5 in the selector 2 to conduct the transistor TR1 and at the same time the inverter. The transistor TR2 is " off " because the " low " level signal inverted via NT is applied to the transistor TR2 via the bias resistor R6 R7.
따라서, 음성분리기 (AS)에서 출력되는 테이프재생음성신호(TA)는 트랜지스터 (TR1)를 통해 접지로 바이패스되는 반면에, 텔레비젼 음성신호(PA)인 자화면의 음성신호만이 저항(R8)을 통해 출력부(3)에 입력됨으로서 스피이커를 통해서는 텔레비젼 음성신호가 출력된다.Therefore, the tape reproducing voice signal TA output from the voice separator AS is bypassed to the ground through the transistor TR1, whereas only the audio signal of the sub picture which is the television voice signal PA is a resistor R8. The audio signal is output through the speaker by being input to the output unit 3 through the speaker.
한편, 이와 같은 텔레비젼 음성신호의 출력상태에서 선택스위치 (SW1)를 다시누르면, D-플립플롭(FF)의 출력은 다시 "로우"레벨로 반전되고, 이하 전술한 바와 동일한 회로동작에 의해 스피이커를 통해서는 다시 테이프 재생음성이 출력된다.On the other hand, when the selector switch SW1 is pressed again in the output state of the television audio signal, the output of the D-flip flop FF is inverted to the "low" level again, and the speaker is operated by the same circuit operation as described above. Then, the tape playback voice is output again.
위와 같이 본 고안은 다중화면방식 브이티알의 모화면과 자화면의 위치를 바꾸지 않고 음성출력을 자유롭게 선택할 수 있어 사용이 편리하며 제품의 고급화를 이룰수 있는 잇점이 있다.As described above, the present invention can be freely selected without changing the position of the parent screen and the child screen of the multi-screen type VT, so it is convenient to use and has the advantage of achieving high-quality products.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019870018965U KR910001289Y1 (en) | 1987-11-02 | 1987-11-02 | Sound selection circuit for multi-screen type vtr |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019870018965U KR910001289Y1 (en) | 1987-11-02 | 1987-11-02 | Sound selection circuit for multi-screen type vtr |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR890011478U KR890011478U (en) | 1989-07-13 |
| KR910001289Y1 true KR910001289Y1 (en) | 1991-02-28 |
Family
ID=19269144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019870018965U KR910001289Y1 (en) | 1987-11-02 | 1987-11-02 | Sound selection circuit for multi-screen type vtr |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR910001289Y1 (en) |
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1987
- 1987-11-02 KR KR2019870018965U patent/KR910001289Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR890011478U (en) | 1989-07-13 |
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