KR860001652Y1 - Muting circuit in video signal no-input - Google Patents

Muting circuit in video signal no-input Download PDF

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Publication number
KR860001652Y1
KR860001652Y1 KR2019840008788U KR840008788U KR860001652Y1 KR 860001652 Y1 KR860001652 Y1 KR 860001652Y1 KR 2019840008788 U KR2019840008788 U KR 2019840008788U KR 840008788 U KR840008788 U KR 840008788U KR 860001652 Y1 KR860001652 Y1 KR 860001652Y1
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KR
South Korea
Prior art keywords
input
video signal
color
horizontal
output
Prior art date
Application number
KR2019840008788U
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Korean (ko)
Other versions
KR860004422U (en
Inventor
김영석
Original Assignee
주식회사 금성사
허신구
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Application filed by 주식회사 금성사, 허신구 filed Critical 주식회사 금성사
Priority to KR2019840008788U priority Critical patent/KR860001652Y1/en
Publication of KR860004422U publication Critical patent/KR860004422U/en
Application granted granted Critical
Publication of KR860001652Y1 publication Critical patent/KR860001652Y1/en

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Classifications

    • 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
    • H04N5/505—Invisible or silent tuning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/16—Picture reproducers using cathode ray tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/004—CRT
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/036—Radio; TV

Abstract

내용없음.None.

Description

영상신호 무입력시 뮤팅회로Muting circuit when no video signal is input

제 1 도는 본 고안의 회로도1 is a circuit diagram of the present invention

제 2 도는 본 고안의 동작을 나타내는 타이밍차트2 is a timing chart showing the operation of the present invention.

* 도면의 주요부분에 대한 부호 설명* Explanation of symbols on the main parts of the drawings

1 : 래치부 2 : 트랜지스터1 latch 2 transistor

3 : 2련 스위치 이다.3: It is a double switch.

본 고안은 TV수상기에 있어서 채널전환시나 영상신호 무입력시 백색화상 잡음이 화면에 나타나지 않고 눈의 피로를 덜어주는 다른 색상으로 화면이 나타나도록 하는 뮤팅회로에 관한 것이다.The present invention relates to a muting circuit in which a white image noise does not appear on a screen when a channel is switched or no image signal is input in a TV receiver, and the screen is displayed in a different color to reduce eye fatigue.

일반적인 칼라 TV수상기에 있어서는 무신호시 또는 채널변환시에 화면이 백상화상 잡음으로 나타나므로 이를 기다리는 시간에 눈의 피로를 점증시키게 되는 원인이 되어왔다. 본고안은 상기와 같은 불편을 해소하고자 안출한 것인데, 이는 상기와 같은 상황하에서 백색 화상잡음대신 눈의 피로감을 덜어주는 색상으로 나타나도록 하므로써 칼라 TV수상기 시청시 유익함을 제공할 목적이 있는 것이다.In a typical color TV receiver, the screen appears as a white image noise during no signal or channel conversion, and it has been a cause of increasing eyestrain during waiting time. The purpose of the present invention is to solve the above inconvenience, which is intended to provide a benefit when watching a color TV receiver by appearing in a color that reduces eye fatigue instead of white image noise under such a situation.

이하에서 이를 상세히 설명하면 다음과 같다.This will be described in detail below.

루미넌스, 크로마개(4)에 암프(5)를 거쳐 브라운관 (6)이 연결되고 수평,수직 출력부(7)를 둔 칼라TV수상기에 있어서, 상기 암프(5)의 색상출력단과 브라운관(6)이 사이에 2련의 스위치(3)를 설치하고, 이 스위치(3)는 트랜지스터(2)의 언, 오프동작에 의해 언,오프되도록 연결하며 이트랜지스터(2)의 베이스입력단은 수평,수직출력부(7)의 싱크로노스 셉(Synchronus Sep)(7a)단과 분주회로(7b)단과 각기 연결된 래치부 (1)를 연결하여 된 것이다.In a color TV receiver having a luminance and a chroma tube 4 connected to the chroma tube 4 via an amp 5 and having a horizontal and vertical output 7, the color output stage and the tube 6 of the amp 5 are provided. In the meantime, two switches 3 are provided, and the switches 3 are connected so as to be turned off and off by the un-off operation of the transistor 2, and the base input terminal of the transistor 2 has horizontal and vertical outputs. The latch unit 1 connected to each of the synchronus sep 7a stage of the unit 7 and the frequency divider circuit 7b stage is connected to each other.

미설명부 Gㅡ Y, Rㅡ Y, BㅡY, Y와 G, R,B는 각기 루미넌스,크로마개에서 분리된 칼라 신호, Vcc는 전원 Ry는 릴레이이다.Unexplained parts G-Y, R-Y, B-Y, Y and G, R, B are the luminance and chroma signals separated from the chroma, respectively, Vcc is the power Ry is a relay.

이러한 구성은 본 고안은 수평, 수직 출력부(7)의 싱크로노스 셉(7a)단은 제2도 (a)와 같이 수평신호를 525분주하여 얻어진 싱호로써 이는 영상신호 입력시 동기출력이 디지탈신호로 출력되며, 영상 신호무입력시는 신호가 없다.In this configuration, the synchrocept force 7a stage of the horizontal and vertical output units 7 is a single signal obtained by dividing a horizontal signal by 525 as shown in FIG. 2 (a). When no video signal is input, there is no signal.

그리고 분주회로(7b)단의 출력은 제2도의(b)와 같이 분주회로의 592개수 출력으로써 영상신호입력시는 무신호(이때는 수평동기 신호를 525개수해서 수직동기신호로 하기 때문에 592개수 신호는 나오지 않는다.)고가 되고,영상신호 무신호시는 592개수 출력된다.As shown in (b) of FIG. 2, the output of the frequency divider circuit 7b is 592 outputs of the frequency divider circuit. When the video signal is input, there are no signals (in this case, 525 horizontal synchronization signals are used as vertical synchronization signals. Is not displayed.) When there is no video signal, 592 numbers are output.

즉, 이 분주회로(7b)단은 영상신호 입력시는 무신호,무입력시는 592개수 신호가 출력되는 것이다.In other words, the frequency divider circuit 7b outputs no signal at the time of video signal input and 592 signals at the time of no input.

그러므로,만약 영상신호가 무입력시는 싱크로노스셉(7a)단의 출력은 없고, 분주회로(7b)단은 수평동기신호의592개수 신호가출력되는 것이며,이는 래치부(1)의 셀(set)단자에 가해져서 래치출력이 제2도의(C)와 같이 출력되어 트랜지스터(2)가 언(ON)되고 이와 연결된 릴레이 등에 의해 2련 스위치(3)를 열어주면 브라운관(6)에서는 초록(G)색깔만 나타나게 된다,Therefore, if no video signal is input, there is no output of the synchrocept 7a stage, and the divider circuit 7b stage outputs 592 signals of the horizontal synchronization signal. The latch output is applied as shown in FIG. 2C, the transistor 2 is turned ON, and the double switch 3 is opened by a relay or the like connected thereto. G) Only color will appear,

이때, 영상신호가 입력되면 수평, 수직출력부(7)의 싱크로노스셉(7a)출력이 나타나고, 수평동기 신호의 592개수 싱호인 분주회로(7b)단의 출력은 나타나지 않는다.그러므로, 래치부(1)의 “Low”로 된다.At this time, when the video signal is inputted, the output of the synchrocept 7a of the horizontal and vertical output units 7 appears, and the output of the frequency divider circuit 7b, which is the 592 number of horizontal synchronous signals, does not appear. It becomes "Low" of (1).

따라서, 트랜지스터(2)는 오프되고 이와 연결된 릴레이 등에 의해 스위치(3)가 원상태로 복귀도어 장상동작을 진행하는 것이다.Therefore, the transistor 2 is turned off and the switch 3 returns to its original state by the relay or the like connected thereto, and performs the phase opening operation.

이러한 본 고안은 칼라TV수상기에 있어서 무신호시나 채널전환시는 화면상태가 눈의 피로감을 느끼지않는 색상으로 표시되므로 이러한 물품의 사용가치를 현저히 증진시킨 유익한 특징이 있는 것이다.The present invention has a beneficial feature that markedly enhances the use value of such an article because the screen state is displayed in a color that does not feel eye fatigue during no signal or channel switching in a color TV receiver.

Claims (1)

루미넌스, 크로마개, (4)에 암프(5)를 거쳐 브라운관(6)을 연결하고, 수평,수직 출력부(7)를 둔 칼라 수상기에 있어서, 상기 암프(5)의 3종의 색상출력단과 브라운관 (6) 사이에 이 타인을 릴레이(Ry)에 의해언, 오프하려는 2련 스위치(3)를 설치하고, 이 릴레이(Ry)제어용 트랜지스터(2)의 베이스단엔 수평,수직출력부(7)의 2신호단에 연결한 래치부(1)의 출력단을 연결하여서 영상신호 무입력시 눈의 피로감이 덜한 색상으로 화면을 구성하도록 함을 특징으로 하는 영상신호 무입력시 뮤팅회로.In the color receiver having the luminance, chroma, and (4) connected to the tube (6) via the amp (5) and having a horizontal and vertical output (7), the three color output stages of the amp (5) and A double switch (3) is provided between the CRTs (6) to turn the tines off and on by the relay (Ry), and the horizontal and vertical output sections (7) are provided at the base of the relay (2) controlling transistor (2). Muting circuit when the video signal is not input, characterized in that to configure the screen with a color less eye strain when the video signal is not input by connecting the output terminal of the latch unit (1) connected to the two signal terminals of the).
KR2019840008788U 1984-09-06 1984-09-06 Muting circuit in video signal no-input KR860001652Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019840008788U KR860001652Y1 (en) 1984-09-06 1984-09-06 Muting circuit in video signal no-input

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019840008788U KR860001652Y1 (en) 1984-09-06 1984-09-06 Muting circuit in video signal no-input

Publications (2)

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KR860004422U KR860004422U (en) 1986-05-01
KR860001652Y1 true KR860001652Y1 (en) 1986-07-23

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KR2019840008788U KR860001652Y1 (en) 1984-09-06 1984-09-06 Muting circuit in video signal no-input

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