KR970014110A - Video mute circuit at power on / off of television receiver - Google Patents

Video mute circuit at power on / off of television receiver Download PDF

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Publication number
KR970014110A
KR970014110A KR1019950027802A KR19950027802A KR970014110A KR 970014110 A KR970014110 A KR 970014110A KR 1019950027802 A KR1019950027802 A KR 1019950027802A KR 19950027802 A KR19950027802 A KR 19950027802A KR 970014110 A KR970014110 A KR 970014110A
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KR
South Korea
Prior art keywords
signal
driving
level
switching
crt
Prior art date
Application number
KR1019950027802A
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Korean (ko)
Other versions
KR0158325B1 (en
Inventor
정일식
Original Assignee
배순훈
대우전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019950027802A priority Critical patent/KR0158325B1/en
Publication of KR970014110A publication Critical patent/KR970014110A/en
Application granted granted Critical
Publication of KR0158325B1 publication Critical patent/KR0158325B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/20—Prevention of damage to cathode-ray tubes in the event of failure of scanning
    • 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
    • H04N5/63—Generation or supply of power specially adapted for television receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Details Of Television Scanning (AREA)

Abstract

본 발명은 텔레비젼 수상기에 전원의 온/오프시에 CRT(Cathode-ray Tube)의 영상출력을 뮤트시킴으로써 CRT화면을 통한 노이즈 화면의 출력을 방지함과 더불어 CRT의 손상을 방지할 수 있도록 된 텔레비전 수상기의 전원 온/오프시 영상뮤트회로에 관한 것으로서, 복합영상신호를 처리하여 색차신호와 휘도신호를 출력하는 영상처리 수단과, 상기 색차신호와 휘도신호를 입력받아 이를 근거로 CRT를 구동하는 CRT구동수단을 갖춘 텔레비전 수상기에 있어서, 상기 CRT구동수단으로 인가되는 휘도신호를 차단하기 위한 스위칭수단과, 텔레비전의 온시에는 제1레벨, 오프시에는 제2레벨의 신호를 출력하는 제어수단, 상기 제1레벨신호의 출력시에 소정 시간동안 상기 스위칭 수단을 구동하는 제1스위칭구동수단 및 상기 제2레벨신호의 출력시에 소정 시간동안 상기 스위칭수단을 구동하는 제2스위칭 구동수단을 포함하여 구성된 것을 특징으로 한다.The present invention provides a television receiver capable of preventing output of a noise screen through a CRT screen and preventing damage to the CRT by muting the video output of a CRT (Cathode-ray Tube) when the power is turned on or off. An image muting circuit for power on / off of an image, comprising: image processing means for processing a composite video signal and outputting a color difference signal and a luminance signal; 1. A television receiver equipped with means, comprising: switching means for cutting off a luminance signal applied to said CRT driving means, control means for outputting a signal of a first level when the television is turned on and a second level when the television is turned off; First switching driving means for driving the switching means for a predetermined time at the output of the level signal and the switch for a predetermined time at the output of the second level signal; It characterized in that it comprises a second switching drive means for driving the switching means.

선택도 : 제2도Selectivity: Second degree

Description

텔레비젼 수상기의 전원 온/오프시의 영상뮤트 회로Image mute circuit when power is turned on or off

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제 2도는 본 발명의 1실시예에 따른 텔레비전 수상기의 전원 온/오프시의 영상뮤트회로를 나타낸 구성도.2 is a block diagram showing an image muting circuit when a television receiver is powered on / off according to an embodiment of the present invention.

Claims (2)

복합영상신호를 처리하여 색차신호와 휘도신호를 출력하는 영상처리수단과, 상기 색차신호와 휘도신호를 입력받아 이를 근거로 CRT를 구동하는 CRT구동수단을 갖춘 텔레비전 수상기에 있어서, 상기 CRT구동수단으로 인가되는 휘도신호를 차단하기 위한 스위칭수단과, 텔레비전의 온시에는 제1레벨, 오프시에는 제2레벨의 신호를 출력하는 제어수단, 상기 제1레벨신호의 출력시에 소정 시간동안 상기 스위칭수단을 구동하는 스위칭 구동수단을 포함하여 구성된 것을 특징으로 하는 텔레비전 수상기의 전원 온/오프시의 영상 뮤트 회로.A television receiver having image processing means for processing a composite video signal and outputting a color difference signal and a luminance signal, and a CRT driving means for receiving the color difference signal and the luminance signal and driving the CRT based thereon. Switching means for interrupting the applied luminance signal, control means for outputting a signal of a first level when the television is turned on, and a second level when the television is turned off, and the switching means for a predetermined time when the first level signal is output. And a switching driving means for driving the video muting circuit at the time of power on / off of the television receiver. 복합영상신호를 처리하여 색차신호와 휘도신호를 출력하는 영상처리수단과, 상기 색차신호와 휘도신호를 입력받아 이를 근거로 CRT를 구동하는 CRT구동수단을 갖춘 텔레비전 수상기에 있어서, 상기 CRT구동수단으로 인가되는 휘도신호를 차단하기 위한 스위칭수단과, 텔레비전의 온시에는 제1레벨, 오프시에는 제2레벨의 신호를 출력하는 제어수단, 상기 제2레벨신호의 출력시에 소정 시간동안 상기 스위칭수단을 구동하는 스위칭 구동수단을 포함하여 구성된 것을 특징으로 하는 텔레비전 수상기의 전원 온/오프시의 영상 뮤트 회로.A television receiver having image processing means for processing a composite video signal and outputting a color difference signal and a luminance signal, and a CRT driving means for receiving the color difference signal and the luminance signal and driving the CRT based thereon. Switching means for interrupting the applied luminance signal, control means for outputting a first level signal when the television is turned on, and a second level signal when the television is turned off, and the switching means for a predetermined time when the second level signal is output. And a switching driving means for driving the video muting circuit at the time of power on / off of the television receiver. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950027802A 1995-08-30 1995-08-30 Image signal mute circuit in tv power on-off KR0158325B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950027802A KR0158325B1 (en) 1995-08-30 1995-08-30 Image signal mute circuit in tv power on-off

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950027802A KR0158325B1 (en) 1995-08-30 1995-08-30 Image signal mute circuit in tv power on-off

Publications (2)

Publication Number Publication Date
KR970014110A true KR970014110A (en) 1997-03-29
KR0158325B1 KR0158325B1 (en) 1998-12-15

Family

ID=19425317

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950027802A KR0158325B1 (en) 1995-08-30 1995-08-30 Image signal mute circuit in tv power on-off

Country Status (1)

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KR (1) KR0158325B1 (en)

Also Published As

Publication number Publication date
KR0158325B1 (en) 1998-12-15

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