KR940023172A - Video Signal Sampling Circuit - Google Patents

Video Signal Sampling Circuit Download PDF

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Publication number
KR940023172A
KR940023172A KR1019930004615A KR930004615A KR940023172A KR 940023172 A KR940023172 A KR 940023172A KR 1019930004615 A KR1019930004615 A KR 1019930004615A KR 930004615 A KR930004615 A KR 930004615A KR 940023172 A KR940023172 A KR 940023172A
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KR
South Korea
Prior art keywords
signal
sampling
video signal
sampled
outputting
Prior art date
Application number
KR1019930004615A
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Korean (ko)
Inventor
유성모
Original Assignee
이헌조
주식회사 금 성 사
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 이헌조, 주식회사 금 성 사 filed Critical 이헌조
Priority to KR1019930004615A priority Critical patent/KR940023172A/en
Publication of KR940023172A publication Critical patent/KR940023172A/en

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  • Processing Of Color Television Signals (AREA)
  • Color Television Systems (AREA)

Abstract

본 발명은 비디오신호의 샘플링회로에 관한 것으로, 종래에는 비디오신호를 샘플링하는 스위치를 구동시키는 클럭펄스부분이 샘플링하고자하는 신호와 연관성이 적어 샘플링할 부분을 정확히 결정할수 없는 문제점이 있었다.The present invention relates to a sampling circuit for a video signal. In the related art, a clock pulse portion for driving a switch for sampling a video signal has a low correlation with a signal to be sampled, so that a portion to be sampled cannot be accurately determined.

따라서 종래의 문제점을 해결하기 위하여 본 발명은 엔티에스씨(NTSC) 방식과 팔(PAL) 방식에 관계없이 샘플링할 비디오신호의 크기와 필요한 위치를 저항 및 콘덴서의 시정수를 이용하여 결정할수 있도록 함으로써 성능신뢰성 검사에 큰 효과를 준다.Therefore, in order to solve the conventional problem, the present invention allows the size and required position of a video signal to be sampled to be determined using a time constant of a resistor and a capacitor regardless of NTSC and PAL methods. It has a big effect on performance reliability test.

Description

비디오신호의 샘플링회로Video Signal Sampling Circuit

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

제3도는 본 발명 비디오신호의 샘플링회로에 대한 블럭구성도, 제4도는 제3도에 대한 상세회로도, 제5도는 제3도에 있어서, 각부의 입출력 파형도.3 is a block diagram of a sampling circuit of a video signal of the present invention, FIG. 4 is a detailed circuit diagram of FIG. 3, and FIG. 5 is a block diagram of input and output waveforms of FIG.

Claims (2)

신호입력단을 통해 비디오신호를 입력하면 그 비디오신호로 부터 각종신호를 분리하여 수직동기신호만을 출력하는 동기신호발생부(11), 상기 동기신호발생부(11)로 부터 발생하는 동기신호를 클럭으로 압력받아 화면의 1프레임에 해당하는 1주기의 구형파를 출력하는 주기펄스발생부(12), 상기 주기펄스발생부(12)로 부터 발생하는 펄스 출력에 따라 구형파의 듀티(DUTY) 및 폭을 조절하여 샘플링 하는 크기를 결정하는 샘플링결정부(13)와, 신호입력단으로 부터 샘플링할 신호가 입력되면 상기 샘플링결정부(13)의 출력신호에 따라 스위칭하여 샘플링을 행하는 스위치부(14)와, 상기 스위치부(14)를 통해 샘플링된 신호를 출력에 맞도록 적당한 레벨로 증폭하여 출력하는 증폭부(15)로 구성됨을 특징으로 하는 비디오신호의 샘플링 회로.When a video signal is input through the signal input terminal, a synchronization signal generator 11 for outputting only a vertical synchronization signal by separating various signals from the video signal and a synchronization signal generated from the synchronization signal generator 11 as a clock. Periodic pulse generator 12 for outputting a square wave of one cycle corresponding to one frame of the screen under pressure, the duty (duty) and width of the square wave is adjusted according to the pulse output generated from the periodic pulse generator 12 A sampling decision unit 13 for determining a sampling size by switching the sampling signal, a switch unit 14 for performing sampling by switching according to an output signal of the sampling determination unit 13 when a signal to be sampled is input from the signal input terminal; And amplifying section (15) for amplifying and outputting a signal sampled through the switch section (14) to an appropriate level to match the output. 제1항에 있어서, 주기펄스발생부(12)는 디플립플롭을 이용하여 펄스를 발생하도록 함을 특징으로 하는 비디오신호의 샘플링회로.2. The sampling circuit of a video signal according to claim 1, wherein the periodic pulse generator (12) generates a pulse by using a flip-flop. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930004615A 1993-03-24 1993-03-24 Video Signal Sampling Circuit KR940023172A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930004615A KR940023172A (en) 1993-03-24 1993-03-24 Video Signal Sampling Circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930004615A KR940023172A (en) 1993-03-24 1993-03-24 Video Signal Sampling Circuit

Publications (1)

Publication Number Publication Date
KR940023172A true KR940023172A (en) 1994-10-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930004615A KR940023172A (en) 1993-03-24 1993-03-24 Video Signal Sampling Circuit

Country Status (1)

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KR (1) KR940023172A (en)

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