KR970057629A - Image signal discrimination device of PDTV - Google Patents

Image signal discrimination device of PDTV Download PDF

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Publication number
KR970057629A
KR970057629A KR1019950055668A KR19950055668A KR970057629A KR 970057629 A KR970057629 A KR 970057629A KR 1019950055668 A KR1019950055668 A KR 1019950055668A KR 19950055668 A KR19950055668 A KR 19950055668A KR 970057629 A KR970057629 A KR 970057629A
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KR
South Korea
Prior art keywords
video signal
signal
clock
pll
counter
Prior art date
Application number
KR1019950055668A
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Korean (ko)
Inventor
박준석
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.)
Filing date
Publication date
Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019950055668A priority Critical patent/KR970057629A/en
Publication of KR970057629A publication Critical patent/KR970057629A/en

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Abstract

본 발명은 피디피 티브이(P에 TV)의 영상신호 판별장치에 관한 것으로, NTSC 방식의 영상신호와 PAL/SEMCAM 방식의 영상신호의 차이점 중의 하나인 수평등기신화의 주파수를 이용하여 영상신호의 방식을 판별하는데, 카운터로 제공되는 기준클럭의 로우레벨기간 동안 PLL로부터 출력되는 컬럭의 객수가 카운터에서 계수되어, 설정된 소정갯수가 계수되면 NTSC 방식의 영상신호라는 판별신호가 D플립플롭으로부터 출력되므로서, NTSC 및 PAL/SECAM 방식에 따른 영상신호를 판별할 수 있으므로, 수명포지션과 수직포지션을 NTSC 및 PAL/SECAM 방식에 따른 영상신호에 적합하게 설정할 수 있도록 한 것이다The present invention relates to a video signal discrimination apparatus of PD TV, which uses one of the differences between NTSC video signal and PAL / SEMCAM video signal. In the low level period of the reference clock provided to the counter, the number of clocks outputted from the PLL is counted in the counter. It is possible to discriminate the video signal according to NTSC and PAL / SECAM method, so that it is possible to set the life position and vertical position to the video signal according to NTSC and PAL / SECAM method.

Description

피디피 티브이(PDP TV)의 영상신호 판별장치Image signal discrimination device of PDTV

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

제1도는 본 발명의 바람직한 실시예에 따른 피디피 티브이(PDP TV)의 영상신호의 판별장치의 개략적인 블록구성도1 is a schematic block diagram of an apparatus for discriminating an image signal of a PDP TV according to a preferred embodiment of the present invention.

제2도는 본 발명에 따라 영상신호를 판별하는 동작과정을 설명하기 위한 도면2 is a view for explaining the operation of determining the image signal in accordance with the present invention

Claims (1)

방송국으로부터 전송되는 영상신호의 방식을 판별하는 PDP TV장치에 있어서, 상기 영상신호 중에 포함 되어 있는 수평동기신호를 분리하기 위한 동기분리수단(100); 상기 동기분리수단(110)에서 분리된 수평동기신호와 분주수단을 통해 분주된 클럭의 위상차에 따른 DC값에 의거하여 위상이 동기되는 클럭을 발생하는 PLL(120); 상기 PLL(120)로부터 출력되는 크럭을 소정주파수를 갖는 클럭으로 분주시키기 위한 상기 분주수단(130);외부로부터 제공되는 기준클럭 내에서 상기 PLL(120)을 통해 동기되어 발생되는 클럭갯수를 계수하여 그에 따른 카운트신호를 발생하는 카운터(140); 외부로부터의 뮤트신호에 의거하여 리셋되며, 상기 카운터(140)로부터의 카운트신호에 의거하여 그에 상응하는 상기 영상신호에 대한 판병신호를 출력하는 D플립플롭(150)으로 구성된 것을 특징으로 하는 피디피 티브이(PDP TV)의 영상신호 판별장치.A PDP TV apparatus for determining a method of a video signal transmitted from a broadcasting station, comprising: sync separating means (100) for separating horizontal sync signals included in the video signal; A PLL (120) for generating a clock whose phase is synchronized based on a horizontal synchronization signal separated by the synchronization separating means (110) and a DC value according to the phase difference between the clock divided by the dividing means; The dividing means 130 for dividing the clock output from the PLL 120 into a clock having a predetermined frequency; counting the number of clocks generated in synchronization with the PLL 120 in a reference clock provided from the outside; A counter 140 for generating a count signal accordingly; PD flip-flop 150, which is reset based on a mute signal from the outside, and outputs a decision signal for the video signal corresponding to the count signal from the counter 140. Image signal discrimination apparatus of TV (PDP TV). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950055668A 1995-12-23 1995-12-23 Image signal discrimination device of PDTV KR970057629A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950055668A KR970057629A (en) 1995-12-23 1995-12-23 Image signal discrimination device of PDTV

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950055668A KR970057629A (en) 1995-12-23 1995-12-23 Image signal discrimination device of PDTV

Publications (1)

Publication Number Publication Date
KR970057629A true KR970057629A (en) 1997-07-31

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ID=66616988

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950055668A KR970057629A (en) 1995-12-23 1995-12-23 Image signal discrimination device of PDTV

Country Status (1)

Country Link
KR (1) KR970057629A (en)

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