KR960009671A - Video and audio mute device when switching TV system - Google Patents

Video and audio mute device when switching TV system Download PDF

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Publication number
KR960009671A
KR960009671A KR1019940019706A KR19940019706A KR960009671A KR 960009671 A KR960009671 A KR 960009671A KR 1019940019706 A KR1019940019706 A KR 1019940019706A KR 19940019706 A KR19940019706 A KR 19940019706A KR 960009671 A KR960009671 A KR 960009671A
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KR
South Korea
Prior art keywords
signal
osd
switching
outputting
luminance
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KR1019940019706A
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Korean (ko)
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KR0126263B1 (en
Inventor
조춘근
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배순훈
대우전자 주식회사
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Priority to KR1019940019706A priority Critical patent/KR0126263B1/en
Publication of KR960009671A publication Critical patent/KR960009671A/en
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Publication of KR0126263B1 publication Critical patent/KR0126263B1/en

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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
    • H04N5/505—Invisible or silent tuning
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/74—Circuits for processing colour signals for obtaining special effects
    • H04N9/76—Circuits for processing colour signals for obtaining special effects for mixing of colour signals
    • 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)
  • Processing Of Color Television Signals (AREA)
  • Color Television Systems (AREA)

Abstract

본 발명은 텔레비젼의 전원 온/오프나 TV/비디오 전환, 스테레오/모노 전환등의 시스템 전환시와 동작 전원의 급격한 변동등에 의해 발생되는 화면상의 화상노이즈나 스피커로부터의 충격음을 제거할 수 있도록된 영상 및 음성 뮤트장치에 관한 것이다.According to the present invention, it is possible to remove on-screen picture noise or impact sound from a speaker caused by a sudden change in operating power and system switching such as TV power on / off, TV / video switching, stereo / mono switching, and the like. And a voice mute device.

본 발명에 있어서는 미이크로 프로세서(9)로부터 시스템 전환신호가 출력되거나 또는 급격한 전원변동이 검출부(14)에 의해 검출되면, 미분회로(15)와 클리퍼회로(16)에 의해 소정 기간동안 하이레벨의 신호가 생성 출력되고, 이 신호는 OSD 구동부(11)에 휘도신호로서 인가됨과 더불어, 스위칭부(17)에 스위칭신호로서 인가되게 된다. 그리고, 스위칭부(17)는 OSD 구동부(11)의 RGB 입력과 음성 증폭부(5)의 증폭제어신호 입력을 접지레벨로 그라운딩 시킴으로써 영상 뮤트 및 음성 뮤트를 실행하게 된다.In the present invention, when a system change signal is output from the microprocessor 9 or a sudden power supply change is detected by the detection unit 14, the differential circuit 15 and the clipper circuit 16 maintain a high level for a predetermined period. A signal is generated and output, and this signal is applied to the OSD driver 11 as a luminance signal and to the switch 17 as a switching signal. The switching unit 17 performs image muting and audio muting by grounding the RGB input of the OSD driver 11 and the amplification control signal input of the audio amplifier 5 to the ground level.

Description

텔레비젼의 시스템 전환시의 영상 및 음성 뮤트장치Video and audio mute device when switching TV system

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

Claims (3)

방송신호로부터 음성신호를 검파하여 처리하는 음성처리부(4)와, 방송신호로부터의 영상신호를 처리하여 소정의 색차신호(R'-Y, G'-Y, B'-Y) 및 휘도신호(Y)를 출력하는 영상처리부(6), 증폭제어신호에 따라 상기 음성처리부(4)에 의해 처리된 음성신호를 증폭하여 출력하는 스피커, 시청자가 텔레지변의 시스템 전환을 실행하기 위한 입력수단(7), 이 입력수단(7)에 의해 입력된 전환신호에 대응하는 OSD 발생을 위한 RGB 및 휘도신호(Y)를 출력하는 OSD 발생수단(10), 이 OSD 발생수단(10)으로부터의 OSD 출력신호를 근거로 OSD 구동을 위한 RGB 및 휘도신호(Y)를 출력하는 OSD 구동수단(11), 이 OSD 구동수단(11)과 상기 영상처리부(6)로부터의 색차신호(R'-Y, G'-Y, B'-Y) 및 휘도신호(Y)를 합성하여 CRT상에 소정의 화상을 형성하는 CRT 구동부(13)로 출력하는 신호합성부(12) 및, 상기 입력수단(7)에 의한 입력에 따라 시스템 전환을 위한 시스템 전환신호를 출력하는 마이크로 프로세서(9)를 구비한 텔레비젼 수상기에 있어서, 상기 마이크로 프로세서(9)로부터의 시스템 전환신호의 출력을 검출하는 전환신호 검출수단(14)과, 상기 전환신호 검출수단(14)에 의해 시스템 전환이 검출된 경우에는 소정기간의 구형파신호를 생성하여 상기 OSD 구동수단(11)의 휘도 입력단으로 출력하는 구형파 발생수단(15, 16), 상기 구형파 발생수단(15,16)의 출력에 따라 스위칭되어 상기 증폭부(5)로 인가되는 증폭제어신호와 상기 OSD 구동수단(11)으로의 RGB 신호를 접지레벨로 강하시키는 스위칭 수단(17)을 포함하여 구성되고, 상기 신호합성부(12)는 상기 OSD 구동수단(11)으로 하는 텔레비젼의 시스템전환시의 영상 및 음성 뮤트장치.An audio processor 4 for detecting and processing an audio signal from the broadcast signal, and a predetermined color difference signal (R'-Y, G'-Y, B'-Y) and luminance signal (processing video signal from the broadcast signal); Y) an image processing unit 6 for outputting, a speaker for amplifying and outputting the audio signal processed by the audio processing unit 4 in accordance with the amplification control signal, and input means for the viewer to perform a tele-system switching. ), An OSD generating means (10) for outputting an RGB and a luminance signal (Y) for OSD generation corresponding to the switching signal input by the input means (7), and an OSD output signal from the OSD generating means (10). OSD driving means (11) for outputting RGB and luminance signals (Y) for driving the OSD on the basis of the above, and color difference signals (R'-Y, G ') from the OSD driving means (11) and the image processor (6). A signal synthesizing unit 12 for synthesizing -Y, B'-Y) and luminance signals Y and outputting them to the CRT driver 13 for forming a predetermined image on the CRT; In a television receiver having a microprocessor (9) for outputting a system switch signal for system switch in accordance with an input by the output means (7), the switch for detecting the output of the system switch signal from the microprocessor (9). When the system switching is detected by the signal detecting means 14 and the switching signal detecting means 14, the square wave generating means for generating a square wave signal for a predetermined period and outputting the square wave signal to the luminance input terminal of the OSD driving means 11 ( 15 and 16 are switched according to the output of the square wave generating means 15 and 16 to drop the amplification control signal applied to the amplifier 5 and the RGB signal to the OSD driving means 11 to the ground level. And a switching means (17), wherein said signal synthesizing portion (12) is said OSD driving means (11). OSD를 위한 RGB 및 휘도신호(Y)를 출력하는 OSD 발생수단과, 이 OSD용 RGB 및 휘도신호(Y)와 복합영상신호로 부터의 색차신호(R'-Y, G'-Y, B'-Y) 및 휘도신호(Y)를 합성하여 출력하는 신호합성수단을 갖춘 텔레비젼에 있어서, 텔레비젼의 과도상태를 검출하는 과도상태 검출수단과, 상기 과도상태 검출수단에 의한 검출결과를 근거로 소정레벨의 OSD용 휘도신호를 생성하여 상기 신호합성수단에 입력하는 신호발생수단을 포함하여 구성된 것을 특징으로 하는 텔레비젼의 영상 뮤트장치.OSD generating means for outputting an RGB and luminance signal (Y) for the OSD, and color difference signals (R'-Y, G'-Y, B ') from the RGB and luminance signals (Y) and the composite video signal for the OSD. -Y) and a television having a signal synthesizing means for synthesizing and outputting a luminance signal (Y), comprising: transient detection means for detecting a transient state of a television and a predetermined level based on detection results by said transient state detection means; And a signal generating means for generating a luminance signal for the OSD and inputting the same to the signal synthesizing means. 제2항에 있어서, 상기 신호 발생수단으로부터 출력되는 OSD용 휘도신호에 의해 스위칭되어 상기 신호합성수단의 OSD용 RGB 신호입력단의 레벨을 접지레벨로 그라운딩시키는 스위칭 수단을 추가로 포함하여 구성된 것을 특징으로 하는 텔레비젼의 영상 뮤트장치.3. The apparatus of claim 2, further comprising switching means for grounding the level of the RGB signal input terminal of the OSD of the signal synthesizing means to the ground level by being switched by the OSD luminance signal output from the signal generating means. TV video mute device. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940019706A 1994-08-10 1994-08-10 Video and sound muting apparatus KR0126263B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940019706A KR0126263B1 (en) 1994-08-10 1994-08-10 Video and sound muting apparatus

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Application Number Priority Date Filing Date Title
KR1019940019706A KR0126263B1 (en) 1994-08-10 1994-08-10 Video and sound muting apparatus

Publications (2)

Publication Number Publication Date
KR960009671A true KR960009671A (en) 1996-03-22
KR0126263B1 KR0126263B1 (en) 1997-12-19

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KR1019940019706A KR0126263B1 (en) 1994-08-10 1994-08-10 Video and sound muting apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100487370B1 (en) * 2002-08-14 2005-05-03 엘지전자 주식회사 Apparatus and Method for Removing Sound Noise of The TV

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