KR970014128A - Muting method and device of video signal in FS type telecasting signal receiver - Google Patents

Muting method and device of video signal in FS type telecasting signal receiver Download PDF

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Publication number
KR970014128A
KR970014128A KR1019950027053A KR19950027053A KR970014128A KR 970014128 A KR970014128 A KR 970014128A KR 1019950027053 A KR1019950027053 A KR 1019950027053A KR 19950027053 A KR19950027053 A KR 19950027053A KR 970014128 A KR970014128 A KR 970014128A
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South Korea
Prior art keywords
signal
circuit
muting
television broadcast
intermediate frequency
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KR1019950027053A
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Korean (ko)
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KR0153828B1 (en
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류우태
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배순훈
대우전자 주식회사
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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
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/08—Separation of synchronising signals from picture signals
    • 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
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/44504—Circuit details of the additional information generator, e.g. details of the character or graphics signal generator, overlay mixing circuits
    • 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
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals

Abstract

본 발명은 FS방식 텔레비젼 방송신호 수신기에 있어서, 선국시에는 동기신호가 있다고 판단되었으나 선국완료 후에 동기신호가 검출되지 않을 경우에는 블루(Blue)화면(뮤팅)이 출력되어 제품이 오동작 하는 것으로 간주 될 수 가 있어 이를 방지하기 위하여 선국완료후에는 영상신호를 뮤팅시키지 않도록 하는 영상신호 뮤팅방법 및 장치에 관한 것이다.According to the present invention, in the FS type television broadcasting signal receiver, when it is determined that there is a synchronization signal at the time of tuning, if a synchronization signal is not detected after the tuning is completed, a blue screen (muting) is output and the product may be regarded as malfunctioning. In order to prevent this problem, the present invention relates to a video signal muting method and apparatus for not muting a video signal after completion of tuning.

수신된 텔레비젼 방송신호를 그대로 보낼것인가 블루신호를 내보낼 것인가를 제어하는 중앙마이크로프로세서(100), 상기 안테나(101)를 통하여 텔레비젼 방송신호를 수신하며 상기 중앙마이크로프로세서(100)의 제어에 따라 상기 수신된 신호를 튜닝하는 튜너(102), 상기 튜너(102)로부터 튜닝된 신호를 수신하여 이를 복조하는 중간주파수(IF)회로(103), 상기중간 주파수(IF)회로(103)로부터의 복조된 신호를 수신하여 동기를 검출하는 동기검출회로(104), 상기 중간 주파수(IF)회로(103)로부터의 복조된 음성검파신호를 수신하여 이를 처리하여 음성신호를 출력하는 음성처리회로(105), 상기 중간 주파수(IF)회로(103)로부터의 복조된 영상신호를 수신하여 이를 처리하여 영상신호를 출력하는 영상처리회로(106) 및 중앙마이크로프로세서(100)의 제어에 따라 화면에 문자를 디스플레이하기 위한 영상신호를 출력하는 온스크린 디스플레이회로(107)로 구성된다.A central microprocessor 100 that controls whether to send the received television broadcast signal as it is or to send a blue signal, and receives the television broadcast signal through the antenna 101 and the reception under the control of the central microprocessor 100 A tuner 102 for tuning the received signal, an intermediate frequency (IF) circuit 103 for receiving and demodulating the tuned signal from the tuner 102 and a demodulated signal from the intermediate frequency (IF) circuit 103. A synchronization detection circuit 104 for detecting synchronization and receiving a demodulated speech detection signal from the intermediate frequency (IF) circuit 103, processing the received speech signal, and outputting a speech signal; A character is displayed on the screen under the control of the image processing circuit 106 and the central microprocessor 100 which receive the demodulated video signal from the intermediate frequency (IF) circuit 103, process it, and output the video signal. And an on-screen display circuit 107 for outputting a video signal for displaying a.

Description

FS방식 텔레비젼 방송신호 수신기에 있어서 영상신호 뮤팅방법 및 장치(Muting method and device of video signal in FS type telecasting signal receiver)Muting method and device of video signal in FS type telecasting signal receiver

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

제 1도는 본 발명에 따른 FS방식 텔레비젼 방송신호 수신기에 있어서 영상신호 뮤팅장치를 도시한 회로 블록도.1 is a circuit block diagram showing a video signal muting apparatus in an FS type television broadcasting signal receiver according to the present invention.

Claims (8)

수신된 텔레비젼 방송신호를 그대로 보낼것인가 블루신호를 내보낼 것인가를 제어하는 중앙마이크로프로세서(100),텔레비젼 방송신호를 수신하는 안테나(101), 상기 안테나(101)를 통하여 텔레비젼 방송신호를 수신하며 상기 중앙마이크로프로세서(100)의 페이즈 록 루프(PLL)데이타, 클럭 및 인에이블신호에 따라 상기 수신된 신호를 튜닝하는 튜너(102), 상기 튜너(102)로부터 튜닝된 신호를 수신하여 이를 복조하는 중간 주파수(IF)회로(103),상기 중간 주파수(IF)회로 (103)로부터의 복조된 신호를 수신하여 동기를 검출하는 동기검출회로(104), 상기 중간 주파수(IF)회로(103)로부터의 복조된 음성검파신호를 수신하여 이를 처리하여 음성신호를 출력하는 음성처리회로(105), 상기 중간 주파수(IF)회로(103)로부터의 복조된 영상신호를 수신하여 이를 처리하여 영상신호를 출력하는 영상처리회로(106) 및 상기 중앙마이크로프로세서(100) 및 상기 영상처리회로(106)에 연결되어 중앙마이크로프로세서(100)의 제어에 따라 화면에 문자를 디스플레이하기 위한 영상신호를 출력하는 온 스크린 디스플레이회로(107)를 포함하는 것을 특징으로 하는 FS방식 텔레비젼 방송신호 수신기에서 영상신호 뮤팅 장치.A central microprocessor (100) controlling whether to send the received television broadcast signal as it is or to send a blue signal, an antenna (101) for receiving a television broadcast signal, and a television broadcast signal through the antenna (101) A tuner 102 for tuning the received signal according to a phase lock loop (PLL) data, a clock, and an enable signal of a microprocessor 100, and an intermediate frequency for receiving and demodulating the tuned signal from the tuner 102; (IF) circuit 103, synchronous detection circuit 104 for receiving a demodulated signal from the intermediate frequency (IF) circuit 103 to detect synchronization, and demodulation from the intermediate frequency (IF) circuit 103. Receives a demodulated video signal from the intermediate frequency (IF) circuit 103 and the audio processing circuit 105 for receiving the processed audio detection signal and processing the same and outputting the audio signal. Is connected to the image processing circuit 106 and the central microprocessor 100 and the image processing circuit 106 to output an image signal for displaying a character on a screen under the control of the central microprocessor 100. An image signal muting apparatus in an FS type television broadcast signal receiver comprising an on screen display circuit (107). 제1항에 있어서, 상기 중앙마이크로프로세서(100)는 동기검출회로(104)로부터 동기여부를 체크하여 텔레비젼 방송신호를 그대로 출력할 것인지 블루신호를 출력할 것인지를 결정하는 것을 특징으로 하는 FS방식 텔레비젼 방송신호 수신기에서 영상신호 뮤팅 장치.The FS system of claim 1, wherein the central microprocessor (100) determines whether to output a television broadcast signal as it is or to output a blue signal by checking whether the synchronization detection circuit (104) synchronizes. Image signal muting device in a broadcast signal receiver. 제1항에 있어서, 온 스크린 디스플레이회로(107)는 중앙마이크로프로세서(100)의 OSD(온 스크린 디스플레이)데이타, 클럭 및 인에이블신호에 따라 화면에 문자를 디스플레이하기 위한 영상신호를 출력하는 것을 특징으로 하는 FS방식 텔레비젼 방송신호 수신기에서 영상신호 뮤팅 장치.The on-screen display circuit 107 of claim 1, wherein the on-screen display circuit 107 outputs an image signal for displaying a character on the screen according to the OSD (on-screen display) data, the clock and the enable signal of the central microprocessor 100. A video signal muting device in an FS-type television broadcast signal receiver. 제1항에 있어서, 약전계신호이라도 일반 선국이되면, 현재상태로 출력할 수 있는 것을 특징으로 하는 FS방식 텔레비젼 방송신호 수신기에서 영상신호 뮤팅 장치.2. The video signal muting apparatus according to claim 1, wherein the weak field signal can be output in the present state when it is a general station. 현재의 채널이 선별된 채널인지를 체크하는 단계(200), 동기 신호가 검출되었는지를 체크하는 단계(201), 현재의 채널이 선별된 채널이거나 동기신호가 검출되면 수신신호를 현재상태로 출력하는 단계(201) 및 현재의 채널이 선별된 채널이 아니고 동기신호가 검출되지 않았다면 블루신호를 출력하는 단계(203)를 포함하는 것을 특징으로 FS방식 텔레비젼 방송신호 수신기에서 영상신호 뮤팅 방법.A step 200 of checking whether the current channel is a selected channel, a step 201 of checking whether a synchronization signal has been detected, and outputting a received signal to the current state if the current channel is a selected channel or a synchronization signal is detected. And a step (203) of outputting a blue signal if a current channel is not a selected channel and a synchronization signal is not detected. 제5항에 있어서, 직접호출방식 및 업/다운 키이 호출방식이 이용될 수 있는 것을 특징으로 FS방식 텔레비젼 방송신호 수신기에서 영상신호 뮤팅 방법.6. The method according to claim 5, wherein a direct call method and an up / down key call method can be used. 제5항 또는 제6항에 있어서, 상기 직접 호출방식에서는 상기 단계(200) 내지 단계(203)를 모두 거쳐 수신신호를 그대로 보낼것인지 블루신호를 출력할 것인지를 결정하는 것을 특징으로 하는 FS방식 텔레비젼 방송신호 수신기에서 영상신호 뮤팅 방법.7. The FS system of claim 5 or 6, wherein the direct calling method determines whether to send the received signal as it is or to output the blue signal through the steps 200 to 203. Video signal muting method in a broadcast signal receiver. 제5항 또는 제6항에 있어서, 상기 업/다운 키이 호출방식에서는 단계(201) 및 단계(203)를 무시하고 무조건 수신신호를 그대로 출력시키는 것을 특징으로 하는 FS방식 텔레비젼 방송신호 수신기에서 영상신호 뮤팅 방법.The video signal of the FS type television broadcast signal receiver according to claim 5 or 6, wherein the up / down key calling method outputs a received signal as it is, ignoring steps 201 and 203. Muting method. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950027053A 1995-08-29 1995-08-29 Muting method and device of video signal in fs type telecasting signal receiver KR0153828B1 (en)

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KR0153828B1 KR0153828B1 (en) 1998-11-16

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