KR970057064A - Still picture control device for detecting weak signal of TV - Google Patents

Still picture control device for detecting weak signal of TV Download PDF

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Publication number
KR970057064A
KR970057064A KR1019950057841A KR19950057841A KR970057064A KR 970057064 A KR970057064 A KR 970057064A KR 1019950057841 A KR1019950057841 A KR 1019950057841A KR 19950057841 A KR19950057841 A KR 19950057841A KR 970057064 A KR970057064 A KR 970057064A
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KR
South Korea
Prior art keywords
signal
image
video
weak
clock pulse
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KR1019950057841A
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Korean (ko)
Inventor
김성준
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배순훈
대우전자 주식회사
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Priority to KR1019950057841A priority Critical patent/KR970057064A/en
Publication of KR970057064A publication Critical patent/KR970057064A/en

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Abstract

본 발명은 텔레비전에서 방송재생되는 채널이 수평동기신호가 비정상적으로 검출되면 영상신호가 소정시간간격으로 정지화면이 재생될 수 있도록 하는 텔레비전의 약신호검출에 따른 정지화면제어장치를 제공한다.The present invention provides a still picture control apparatus according to a weak signal detection of a television that allows a still picture to be reproduced at a predetermined time interval when a horizontal synchronization signal is abnormally detected in a channel broadcasted on a television.

그에 따라 본 발명은 영상증폭부(8)로부터의 영상신호에 포함된 수평동기신호를 추출하는 수평동기추출수단(12,14)과, 상기 추출된 수평동기신호의 약신호상태를 검출하는 약신호검출수단(16),상기 수평동기신호의 약신호상태 검출시에 영상신호처리부(10)를 통한 복합영상신호를 디지털데이터의 형태로 데이터변환하는 데이터 변환수단(18), 상기 데이터변환된 복합영상데이터를 데이터를 프레임단위로 메모리하는 영상메로리수단(20),상기 영상 메모리수단(20)에 소정의 설정시간 단위로 메모리기능이 실행되도록하는 가변된 클럭펄스를 발생하는 클럭펄스발생수단(22) , 상기 영상메모리수단(20)에 메모리된 복합영상데이터를 아날로그신호의 형태로 신호변환하는 신호변환수단(24),상기 수평신호의 약신호상태 검출시에 상기 영상신호처리부(10)로부터의 복합영상 신호가 재생금지되도록 함과 더불어, 상기 신호변환된 복합영상신호의 비정상상태 검출시에 상기 음성신호처리부(32)가 뮤트되도록 함과 더불어, 상기 스위치회로수단(26)을 스위칭제어하여 상기 영상메모리수단(20)에 메모리되어 신호변환수단(24)을 통한 복합영상신호가 상기 클럭펄스발생수단(22)에서 발생되는 클럭펄스에 동기되는 기간마다 주기적으로 정지하면 재생되도록 제어하는(38)을 구비하여 구성된 것을 특징으로 한다.Accordingly, the present invention provides horizontal synchronization extracting means (12,14) for extracting the horizontal synchronization signal included in the image signal from the image amplifier (8), and weak signal for detecting the weak signal state of the extracted horizontal synchronization signal. Detection means (16), data conversion means (18) for converting a composite video signal through a video signal processing unit (10) into digital data when detecting a weak signal state of the horizontal synchronization signal, and the data converted composite image Image memory means 20 for storing data in frame units of data, and clock pulse generation means 22 for generating a variable clock pulse for executing a memory function in a predetermined set time unit in the image memory means 20. Signal converting means (24) for converting the complex video data stored in the video memory means (20) into an analog signal form; and detecting the weak signal state of the horizontal signal from the video signal processor (10). The reproduction of the composite video signal is inhibited, and the audio signal processing unit 32 is muted when the abnormal state of the signal-converted composite video signal is detected. It is controlled by the image memory means 20 so as to be reproduced if the composite image signal through the signal conversion means 24 stops periodically at every period synchronized with the clock pulse generated by the clock pulse generating means 22 (38). Characterized in that provided with.

Description

텔레비전의 약신호검출에 따른 정지화면제어장치Still picture control device for detecting weak signal of TV

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

제1도는 본 발명에 따른 텔레비전의 약신호검출에 따른 정지화면제어장치를 나타낸 블럭구성도.1 is a block diagram showing a still picture control apparatus for detecting a weak signal of a television according to the present invention.

Claims (1)

튜너(2)에 의해 선국된 소정 채널의 영상신호가 영상IF부(4)를 통해 중간주파수증폭되어 영상증폭부(8)에 의해 신호증폭된 다음에, 영상신호처리부(10)를 통해 복합영상신호의 형태로 영상신호처리되어 영상출력부(28)에 의해 영상재생되고, 그, 음성신호가 음성IF부(6)를 통해 중간주파수증폭되어 음성증폭부(30)에 의해 신호증폭된 다음에, 음성신호처리부(32)를 통해 음성신호처리되어 음성출력부(34)에 의해 재생되는 텔레비전에 있어서, 상기 영상증폭부(8)로부터의 영상신호에 포함된 수평동기 신호를 추출하는 수평동기 추출수단(12,14)과, 상기 추출된 수평동기신호의 약신호상태를 검출하는 약신호검출수단(16), 상기 수평동기신호의 약신호상태 검출시에 상기 영상신호처리부(10)를 통한 복합 영상신호를 디지털데이터의 형태로 데이터변환하는 데이터 변환수단(18), 상기 데이터 변환된 복합영상데이터를 프레임단위로 메모리하는 영상메모리 수단(20), 상기 영상메모리수단(20)에 소정의 설정시간 단위로 메모리기능이 실행되도록 하는 가변된 클럭펄스를 발생하는 클럭펄스발생수단(22), 상기 영상메모리수단(20)에 메모리된 복합영상데이터를 아날로그신호의 형태로 신호변환하는 신호변환수단(24), 상기 수평동기신호의 약신호상태 검출시에 상기 영상신호처리부(10)로부터의 복합영상 신호가 재생금지되도록 함과 더불어, 상기 신호변환된 복합영상신호가 정지화면으로서 재생되도록 스위칭절환 되는 스위치회로수단(26)및, 상기 약 신호검출수단(16)에 의한 수평동기신호의 비정상상태 검출시에 상기 음성신호처리부(32)가 뮤트되도록 함과 더불어, 상기 스위치회로수단(26)을 스위칭제어하여 상기 영상메모리수단(20)에 메모리되어 신호변환수단(24)을 통한 복합영상신호가 상기 클럭펄스발생수단(22)에서 발생되는 클럭 펄스에 동기되는 기간마다 주기적으로 정지화면 재생되도록 제어하는 제어수단(38)을 구비하여 구성된 것을 특징으로 하는 텔레비전 약신호검출에 따른 정지화면제어장치.An image signal of a predetermined channel tuned by the tuner 2 is amplified by the image amplifier 8 by an intermediate frequency amplification through the image IF unit 4 and then a composite image by the image signal processor 10. The video signal is processed in the form of a signal, and the video is reproduced by the video output unit 28. The audio signal is amplified by an intermediate frequency through the audio IF unit 6 and then amplified by the audio amplifier 30. In the television that is processed by the audio signal processing unit 32 and reproduced by the audio output unit 34, the horizontal synchronization extraction for extracting the horizontal synchronization signal included in the video signal from the image amplifying unit 8 Means 12 and 14, a weak signal detecting means 16 for detecting the weak signal state of the extracted horizontal synchronous signal, and a combination of the weak signal state of the horizontal synchronous signal and the video signal processor 10 when detecting the weak signal state of the horizontal synchronous signal. Data that converts video signals into digital data Converted clock 18, the image memory means 20 for storing the data-converted composite image data in units of frames, and the variable clock pulse to execute the memory function in the predetermined time unit of the image memory means 20 Clock pulse generating means 22 for generating a signal, signal converting means 24 for converting the composite image data stored in the image memory means 20 into an analog signal form, and detecting a weak signal state of the horizontal synchronous signal. A switch circuit means 26 for switching the composite video signal from the video signal processing section 10 to be prohibited from playing, and switching the signal-converted composite video signal to be reproduced as a still picture, and the weak signal detection means. When the abnormal state of the horizontal synchronization signal is detected by the 16, the audio signal processing unit 32 is muted, and the switch circuit means 26 is switched to control the image. Control means (38) for controlling the composite image signal is memorized in the memory means 20 to reproduce the still image periodically at a time period synchronized with the clock pulse generated by the clock pulse generating means (22) Still picture control apparatus according to the television weak signal detection, characterized in that comprising a). ※참고사항:최초출원 내용에 의하여 공개하는 것임.※ Note: This is to be disclosed based on the first application.
KR1019950057841A 1995-12-27 1995-12-27 Still picture control device for detecting weak signal of TV KR970057064A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950057841A KR970057064A (en) 1995-12-27 1995-12-27 Still picture control device for detecting weak signal of TV

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KR1019950057841A KR970057064A (en) 1995-12-27 1995-12-27 Still picture control device for detecting weak signal of TV

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KR970057064A true KR970057064A (en) 1997-07-31

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KR1019950057841A KR970057064A (en) 1995-12-27 1995-12-27 Still picture control device for detecting weak signal of TV

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