KR900010905Y1 - Video signal selecting circuit - Google Patents
Video signal selecting circuit Download PDFInfo
- Publication number
- KR900010905Y1 KR900010905Y1 KR2019860020524U KR860020524U KR900010905Y1 KR 900010905 Y1 KR900010905 Y1 KR 900010905Y1 KR 2019860020524 U KR2019860020524 U KR 2019860020524U KR 860020524 U KR860020524 U KR 860020524U KR 900010905 Y1 KR900010905 Y1 KR 900010905Y1
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- South Korea
- Prior art keywords
- diode
- video signal
- led
- light emitting
- resistor
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Classifications
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- 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
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S362/00—Illumination
- Y10S362/80—Light emitting diode
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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.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
10 : 비데오 선택시 동작회로 LED1, LED2… : 발광다이오드10: Operation circuit LED 1 , LED 2 . : Light emitting diode
SW1, SW2… : 채널 선택스위치 R1, R2… : 저항SW 1 , SW 2 . : Channel selector switch R 1 , R 2 . : resistance
S1, S2… : 대역폭선택스위치 VR1, VR2… : 가변저항S 1 , S 2 . Bandwidth selector switch VR 1 , VR 2 . : Variable resistor
I : 비데오 신호 입력단자 IFIC : 중간주파수 처리용 집적소자I: Video signal input terminal IFIC: Intermediate frequency processing integrated device
D1, D2… : 다이오드D 1 , D 2 . : Diode
본 고안은 텔레비젼(TV) 채널 스위치를 이용하여 텔레비젼의 비데오 신호 및 비데오 테이프 레코오더(VTR)의 비데오 신호를 선택하기 위한 비데오 신호 선택 회로이다.The present invention is a video signal selection circuit for selecting a video signal of a television and a video tape recorder (VTR) using a television (TV) channel switch.
소프트 터치 방식을 이용하여 원하는 방송을 선국시키는 TV에서는 TV 및 VTR을 절환시키는 절환스위치를 TV의 뒷면에 별도로 구성시키기 때문에 절환시 불편할뿐만 아니라 절환스위치 및 코넥터를 별도로 구성시켜야 되는 단점이 생기는 것이었다.In a TV that tunes a desired broadcast using a soft touch method, a switching switch for switching the TV and the VTR is separately configured on the back of the TV.
본 고안의 목적은 이러한 문제점을 해결하기 위하여 기존 TV에서 사용되어지지 않는 채널을 이용하여 마지막 채널 스위치만 누르면 VTR의 시청이 가능하여 TV/VTR 절환스위치를 절환시키는 불편을 없애 시청자가 편리하게 VTR을 시청할 수 있는 편리함을 제공하는 동시에 기타 부품이 소요되는 것을 제거시킬 수 있도록 한 것으로 이를 첨부 도면에 의하여 상세히 설명하면 다음과 같다.The purpose of the present invention is to solve this problem, by pressing the last channel switch using a channel that is not used in the existing TV can watch the VTR, eliminating the inconvenience of switching the TV / VTR switch, viewers can conveniently use the VTR The convenience of viewing and at the same time to remove the other parts that are required to be described in detail by the accompanying drawings as follows.
채널선택 스위치(SW1-SW2)에 인가되는 전원(+33V)(+12V)일측으로 발광 다이오드(LED1-LEDn)와 연결된 저항(R1)(R2)으로 공급되게 구성하여 대역 선택 스위치(S1)(Sn-1)를 통하여 대역폭 선택 연결단자(VL)(VH)(UHF)와 연결되게 구성시키고 타측으로 가변저항(VR1-VRn-1) 및 다이오드 (D1-Dn-1)를 통하여 튜우너의 튜우닝 전압(BT)이 공급되게 구성시킨 후 발광 다이오드(LEDn)와 연결된 마지막 채널 선택 스위치(SWn)에 저항(R3-R5)을 통하여 대역폭 선택 연결단자(VL)(VH)(UHF)와 연결되게 구성시킨다.It is configured to be supplied to the resistor R 1 (R 2 ) connected to the light emitting diode (LED 1 -LED n ) to one side of the power (+ 33V) (+ 12V) applied to the channel selection switch (SW 1 -SW 2 ). It is configured to be connected to the bandwidth selection connecting terminal (VL) (VH) (UHF) through the selection switch (S 1 ) (S n-1 ) and the variable resistance (VR 1 -VR n-1 ) and the diode (D 1 ) to the other side. -D n-1 ) is configured to supply the tuner's tuning voltage BT, and then through the resistors R 3 -R 5 to the last channel selector switch SW n connected to the light emitting diode LED n . It is configured to be connected to the selection connection terminal (VL) (VH) (UHF).
그리고 비데오 신호 입력단자(I)와 연결된 콘덴서(C2) 및 다이오드(Dn)를 통하여 중간주파수 처리용 집적회로(IFIC)의 핀(2)(3)에 연결된 콘덴서(C1) 및 다이오드(Dn+1), 저항(R6)(R7)과 연결되게 비데오 선택시동작회로(10)를 구성시켜 된 것이다.And a capacitor (C 1 ) and a diode (C 1 ) connected to pins (2) (3) of an intermediate frequency processing integrated circuit (IFIC) through a capacitor (C 2 ) and a diode (D n ) connected to the video signal input terminal (I). D n + 1 ), and the operation circuit 10 at the time of video selection is configured to be connected to the resistors R 6 and R 7 .
이와 같이 구성된 본 고안에서 텔레비젼에 전원 투입시 인가되는 전원(+12V)이 저항(R3-R5)을 통하여 대역폭선택 스위치(S1)(S2)를 통하여 발광 다이오드(LED1-LEDn-1)에 인가되게 되는 동시에 대역폭 선택 연결단자(VL)(VH)(UHF)를 통하여 튜우너에 선국 전압이 인가되게 된다.Thus configured, the power (+ 12V) to be applied when power is turned on the TV in the subject innovation a resistance (R 3 -R 5) light-emitting diode via the bandwidth selection switch (S 1) (S 2) through (LED 1 -LED n 1) the channel selection voltage to be applied to the tube at the same time that wooneo through the selected bandwidth connection terminal (VL) (VH) (UHF ) is to be applied.
이때에 텔레비젼을 튜우너에는 전원(+33V)에 의한 전압이 가변저항(VR1-VRn-1)과 다이오드(D1-Dn-1)를 통하여 튜우닝 전압(BT)이 인가된다.At this time, the tuner voltage BT is applied to the television tuner through the variable resistors VR 1- VR n-1 and the diodes D 1 -D n-1 .
튜우너가 동작하면 텔레비젼의 중간주파수 처리용 집적회로의 핀(Pin)(2)에서 신호가 나와 다이오드(Dn+1)통과한 후 역 방향으로 연결된 다이오드(Dn)를 통과하지 못하고 콘덴서(C1)를 통해 다시 중간 주파수 처리용 집적 소자의 핀(3)으로 입력되어 텔레비젼 시청이 이루어진다.When the tuner operates, a signal comes out from the pin (2) of the integrated circuit for intermediate frequency processing of the television, passes through the diode (D n + 1 ), and then does not pass through the diode (D n ) connected in the reverse direction. 1 ) is input back to the pin 3 of the intermediate frequency processing integrated device to watch television.
비데오 신청을 위해서는 마지막 채널(SWn)을 선택하여 이 채널이 선택 되었을시에는 전원(+12V)에 의한 전압이 발광다이오드(LEDn)와 저항(R1)(R2)에 인가되며 이 전압에 의하여 비데오 시청을 표시해 주는 발광다이오드(LEDn)가 점등된다.For the video application, when the last channel (SW n ) is selected and this channel is selected, the voltage by the power supply (+ 12V) is applied to the light emitting diode (LED n ) and the resistor (R 1 ) (R 2 ). The light emitting diode (LED n ) indicating the video viewing is turned on.
그리고 이 전압에 의하여 비데오 신호의 입력 회로에 있는 다이오드(Dn)의 에노우드에 전압이 인가되어 다이오드(Dn)가 온(ON) 상태에 있게되며 다이오드(Dn+1)는 오프(off) 상태에 있게 된다.The voltage is applied to the anode of the diode D n in the input circuit of the video signal so that the diode D n is in an on state and the diode D n + 1 is off. ) State.
다이오드(Dn)가 온 상태가 되면 비데오의 신호가 비데오 신호입력단자(I)에 입력되어 콘덴서(C2)(C1) 및 다이오드(Dn)를 통해 텔레비젼의 중간주파수 처리용 집적소자(IFIC)의 핀(3)에 입력되어 비데오 시청이 이루어진다.When the diode D n is turned on, the video signal is input to the video signal input terminal I, and the integrated device for intermediate frequency processing of the television through the capacitor C 2 (C 1 ) and the diode D n ( It is input to pin 3 of IFIC) and video viewing is performed.
이때 콘덴서(C2)(C1)는 잡음 제거를 위하여 사용된다.At this time, the capacitor C 2 (C 1 ) is used to remove the noise.
또한 전원(+33V)에 의한 전압은 스위치(SWn)를 통해 직접 접지로 흐르므로 텔레비젼의 튜우너에 전원공급이 차단되어 튜우너가 동작하지 못한다.In addition, since the voltage from the power supply (+ 33V) flows directly to the ground through the switch SW n , the power supply to the tuner of the television is cut off, and thus the tuner does not operate.
이상에서와 같이 본 고안은 비데오 시청시 마지막 채널을 선택하여 발광다이오드(LEDn)를 점등시켜 비데오시청중임을 나타내며 비데오 신호 입력단자(I)에 신호가 입력되어 콘덴서(C2)(C1)와 다이오드(Dn)를 거쳐 텔레비젼의 중간주파수 처리용 집적소자(IFIC)에 입력시켜 비데오 시청을 가능하게 해주는 비데오 신호 선택회로인 것이다.As described above, the present invention selects the last channel when watching a video, turns on the light emitting diode (LED n ), and indicates that the video is being watched. A signal is input to the video signal input terminal (I) to condenser (C 2 ) (C 1 ). It is a video signal selection circuit that inputs to an intermediate frequency processing integrated device (IFIC) of a television via a diode D n and enables video viewing.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860020524U KR900010905Y1 (en) | 1986-12-19 | 1986-12-19 | Video signal selecting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860020524U KR900010905Y1 (en) | 1986-12-19 | 1986-12-19 | Video signal selecting circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR880014115U KR880014115U (en) | 1988-08-31 |
| KR900010905Y1 true KR900010905Y1 (en) | 1990-12-08 |
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ID=19258091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019860020524U KR900010905Y1 (en) | 1986-12-19 | 1986-12-19 | Video signal selecting circuit |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR900010905Y1 (en) |
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1986
- 1986-12-19 KR KR2019860020524U patent/KR900010905Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR880014115U (en) | 1988-08-31 |
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