KR880000670Y1 - Distributor circuit - Google Patents
Distributor circuit Download PDFInfo
- Publication number
- KR880000670Y1 KR880000670Y1 KR2019850003386U KR850003386U KR880000670Y1 KR 880000670 Y1 KR880000670 Y1 KR 880000670Y1 KR 2019850003386 U KR2019850003386 U KR 2019850003386U KR 850003386 U KR850003386 U KR 850003386U KR 880000670 Y1 KR880000670 Y1 KR 880000670Y1
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- KR
- South Korea
- Prior art keywords
- vtr
- antenna
- output terminal
- transistor
- signal
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/12—Bandpass or bandstop filters with adjustable bandwidth and fixed centre frequency
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards
- H04N5/40—Modulation circuits
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안의 회로도.1 is a circuit diagram of the present invention.
제2도는 종래의 회로도.2 is a conventional circuit diagram.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
10 : 스위칭부 20 : 밴드 패스필터10: switching unit 20: band pass filter
30 : 레벨설정부30: level setting section
본 고안은 VTR과 TV의 접속 사용시 모듈레이터와 일체로 구성하여 안테나로부터의 신호를 분배시킴은 물론 제품의 소형 경량화를 할 수 있도록 한 분배기 회로에 관한 것이다.The present invention relates to a distributor circuit that is configured to be integral with the modulator when using the connection between the VTR and the TV to distribute the signal from the antenna and to reduce the size and weight of the product.
종래에 있어, VTR과 TV를 상호 접속하고 VTR을 시청하고자 할 때에는 TV에 접속된 안테나의 입력신호에 의하여 TV 화면에 나타나는 VTR로 부터의 영상출력은 고스트(Ghost) 현상이 나타나는 등 인접 채널 주파수 신호의 간섭에 의한 잡음이 화면에 나타나게 되므로, 선명한 영상화면을 시청하기 위하여는 TV에 VTR만을 접속하고, 안테나는 매번 제거하여야 하는 번거로움이 뒤따랐다.Conventionally, when the VTR and the TV are connected to each other and the VTR is to be viewed, the video output from the VTR appearing on the TV screen by the input signal of the antenna connected to the TV has a ghost phenomenon. Since noise caused by interference appears on the screen, it is cumbersome that only the VTR is connected to the TV and the antenna is removed every time in order to watch a clear picture.
따라서 이와 같은 번거로움을 보완하고자 고안된 바 있는 회로로서는 제2도에 도시한 바와 같이 고주파 특성이 양호한 릴레이(Ry)를 사용하여 그의 접점 전환에 의하여 TV와 VTR의 신호를 선택할 수 있도록 구성되어져 있으나, 이는 제조공정이 단순한 잇점은 있으나, 부품의 소형경량화 추세에 발맞추어 모듈레이터와 일체로 구성하기에는 많은 어려움이 뒤따랐다.Therefore, as a circuit designed to compensate for the above-mentioned inconvenience, as shown in FIG. 2, a relay (Ry) having good high frequency characteristics is used to select a signal between the TV and the VTR by switching the contact point thereof. The manufacturing process has a simple advantage, but in accordance with the trend of miniaturization and light weight of components, it has been difficult to be integrated with the modulator.
본 고안은 이러한 점을 감안하여 고주파 트랜지스터를 이용한 분배기 회로를 구성하고 이를 모듈레이터와 일체화 시키므로서 부품의 소형 경량화를 꾀하도록 안출한 것으로서, 이를 첨부한 도면에 의하여 상세히 설명하면 다음과 같다.The present invention has been devised to reduce the size and weight of a component by constructing a divider circuit using a high frequency transistor and integrating it with a modulator, which will be described in detail with reference to the accompanying drawings.
제1도에서와 같이 안테나 입력단자(2)에 트랜지스터(Q1-Q3), 코일(L2-L6), 콘덴서(C1-C6) 및 저항(R1-R3),(R7)으로 연결 구성된 스위칭부(10)를 접속하여 TV에 공급되는 안테나 출력단자(3)에 연결시키고, VTR의 모듈레이터 출력단자(1)에는 콘덴서(C10-C12) 및 코일(L8-L9)로 구성된 밴드패스필터(20)를 통하여 저항(R4-R6)으로 된 레벨 설정부(30)를 접속시키며,As shown in FIG. 1, transistors Q 1 -Q 3 , coils L 2 -L 6 , capacitors C 1 -C 6 , and resistors R 1 -R 3 , ( R 7 ) is connected to the switching unit 10 is connected to the antenna output terminal (3) supplied to the TV, the capacitor output terminal (1) of the VTR capacitor (C 10 -C 12 ) and the coil (L 8) -L 9 to connect the level setting unit 30 of the resistor (R 4 -R 6 ) through a band pass filter 20 composed of,
상기 레벨설정부(30)를 스위칭부(10)의 트랜지스터(Q3)의 에미터측에 연결하여 구성시킨다.The level setting unit 30 is connected to the emitter side of the transistor Q 3 of the switching unit 10.
미설명부호 B는 직류 전원이고, S1는 전원스위치이다.Unexplained sign B Is a DC power supply, and S 1 is a power switch.
이와 같이 구성된 본 고안의 작용효과를 설명하면 다음과 같다.Referring to the effect of the present invention configured as described above are as follows.
제1도에서 전원스위치(S1)를 "온"상태로 하면, 트랜지스터(Q1-Q3)가 모두 도통 상태가 된다.In FIG. 1, when the power switch S 1 is turned "on", all of the transistors Q 1 -Q 3 are turned on.
이때 안테나 입력단자(2)로 입력된 안테나 입력신호는 코일(L2),(L3)의 결합에 의하여 저항(R7)에 유기된다.At this time, the antenna input signal input to the antenna input terminal 2 is induced in the resistor R 7 by the combination of the coils L 2 and L 3 .
이와 같이 저항(R7)에 유기된 안테나 입력신호는 콘덴서(C4)와 도통된 트랜지스터(Q1)의 콜렉터와 에미터 및 콘덴서(C6)를 통하여 접지되므로서 1차 감쇠되고, 콘덴서(C3)로 전달되는 1차 감쇠후의 잔류신호는 도통된 트랜지스터(Q2)와 그의 에미터에 접속된 콘덴서(C5)를 통하여 접지되므로, 안테나 입력단자(2)로부터의 입력신호는 완전 감쇠되어 안테나 출력단자(3)로는 출력되지 않게 되고,As such, the antenna input signal induced in the resistor R 7 is first attenuated by being grounded through the collector, the emitter, and the capacitor C 6 of the transistor Q 1 conducting with the capacitor C 4 . Since the residual signal after the first attenuation transmitted to C 3 ) is grounded through the conducted transistor Q 2 and the capacitor C 5 connected to its emitter, the input signal from the antenna input terminal 2 is completely attenuated. Is not output to the antenna output terminal (3),
이대 VTR의 모듈레이터 출력단자(1)로의 모듈레이터 출력신호 성분인 3 또는 4채널로 변환된 VTR 신호는 콘덴서(C10-C12)와 코일(L8-L9)로 구성된 밴드패스필터(20)를 통하여 인접 채널신호를 감쇠시킨 후, 저항(R4-R6)으로 구성된 레벨 설정부(30)에서 적당한 신호레벨로 조정된다.The VTR signal converted into three or four channels, which is a modulator output signal component of the two VTRs to the modulator output terminal 1, is a band pass filter 20 composed of a condenser C 10 -C 12 and a coil L 8 -L 9 . After attenuating the adjacent channel signal through, the level setting unit 30 composed of resistors R 4 -R 6 is adjusted to an appropriate signal level.
이와 같은 상태에서 스위칭부(10) 내의 트랜지스터(Q3)가 도통 상태이므로, 레벨설정부(30)의 신호는 트랜지스터(Q3)의 에미터 및 콜렉터와 콘덴서(C1), 안테나 출력단자(3)를 통하여 TV에 공급되므로 TV화면에서는 VTR에서 재생되는 영상화면을 시청하게 된다.In this state, since the transistor Q 3 in the switching unit 10 is in a conducting state, the signal of the level setting unit 30 is the emitter and the collector of the transistor Q 3 , the capacitor C 1 , and the antenna output terminal ( 3) Since it is supplied to the TV through the TV screen to watch the video screen played on the VTR.
한편, 전원스위치(S1)를 오프하여 전원(B) 공급이 차단되면, 스위칭부(10)내의 트랜지스터(Q1),(Q2),(Q3)가 모두 오프되므로, VTR의 모듈레이터 출력단자(1)로의 3 또는 4 채널로 변환된 VTR의 출력 신호는, 트랜지스터(Q3)가 차단 상태이므로 안테나 출력단자(3)로 출력되지 못하고, 안테나 입력단자(2)로 입력되는 안테나 입력신호는 코일(L2),(L3)의 결합에 의하여 저항(R7)에 유기되어 콘덴서(C4),(C3),(C2) 및 코일(L4),(L5),(L6)로 구성된 공진회로를 통하여 안테나 출력단자(3)에 출력되어 TV에 공급되므로, TV방송을 시청하게 되는 것이다.On the other hand, by turning off the power switch (S 1 ) power supply (B) ) When the supply is cut off, the transistors Q 1 , Q 2 , and Q 3 in the switching unit 10 are turned off, so that the VTRs converted to 3 or 4 channels of the VTR to the modulator output terminal 1 of the VTR are turned off. The output signal is not output to the antenna output terminal 3 because the transistor Q 3 is blocked, and the antenna input signal input to the antenna input terminal 2 is coupled to the coils L 2 and L 3 . by it is induced in the resistor (R 7) a capacitor (C 4), (C 3 ), (C 2) and the coil (L 4), (L 5 ), (L 6) antenna through the configured resonant circuit to the output terminal ( 3) is output to the TV, so you will watch TV broadcast.
이상에서와 같이 동작되는 본 고안은 고주파 트랜지스터를 이용한 간단한 분배기 회로로서, 모듈레이터와 일체로 구성할 수 있어 부품의 소호 경량화를 실현함은 물론 모듈레이터와 동시에 전원을 사용할 때에는 전력소모도 크게 줄일 수 있는 효과가 있는 것이다.The present invention, which operates as described above, is a simple divider circuit using a high frequency transistor, and can be integrally formed with a modulator, thereby realizing light weight reduction of parts and greatly reducing power consumption when using a power supply at the same time as the modulator. There is.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019850003386U KR880000670Y1 (en) | 1985-03-29 | 1985-03-29 | Distributor circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019850003386U KR880000670Y1 (en) | 1985-03-29 | 1985-03-29 | Distributor circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR860012545U KR860012545U (en) | 1986-10-10 |
| KR880000670Y1 true KR880000670Y1 (en) | 1988-03-14 |
Family
ID=19240958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019850003386U KR880000670Y1 (en) | 1985-03-29 | 1985-03-29 | Distributor circuit |
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| Country | Link |
|---|---|
| KR (1) | KR880000670Y1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070031143A (en) * | 2005-09-14 | 2007-03-19 | 윤승호 | Safe Driving Induction Device for Car |
-
1985
- 1985-03-29 KR KR2019850003386U patent/KR880000670Y1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070031143A (en) * | 2005-09-14 | 2007-03-19 | 윤승호 | Safe Driving Induction Device for Car |
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| Publication number | Publication date |
|---|---|
| KR860012545U (en) | 1986-10-10 |
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