KR970078448A - Video signal recording and reproducing apparatus - Google Patents

Video signal recording and reproducing apparatus Download PDF

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Publication number
KR970078448A
KR970078448A KR1019960016272A KR19960016272A KR970078448A KR 970078448 A KR970078448 A KR 970078448A KR 1019960016272 A KR1019960016272 A KR 1019960016272A KR 19960016272 A KR19960016272 A KR 19960016272A KR 970078448 A KR970078448 A KR 970078448A
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KR
South Korea
Prior art keywords
signal
video signal
recording
video
sync
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Application number
KR1019960016272A
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Korean (ko)
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KR100191207B1 (en
Inventor
김용모
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김광호
삼성전자 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.)
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Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019960016272A priority Critical patent/KR100191207B1/en
Publication of KR970078448A publication Critical patent/KR970078448A/en
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Publication of KR100191207B1 publication Critical patent/KR100191207B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H04N5/77—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters
    • 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

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

1. 청구범위 기재된 발명이 속한 기술분야1. TECHNICAL FIELD OF THE INVENTION

카메라로부터 촬상된 영상신호를 기록하거나 이 기록된 영상신호를 재생시에 영상신호로부터 동기신호를 추출하여 기록 및 재생하는 기술이다.A technique of recording a video signal picked up from a camera or extracting a sync signal from a video signal at the time of reproducing the recorded video signal and recording and reproducing the video signal.

2. 발명이 해결하고자 하는 기술적 과제2. Technical Problems to be Solved by the Invention

별도의 동기신호발생부가 없이 영상신호로부터 동기신호를 추출하여 영상신호의 기록 및 재생을 한다.A synchronizing signal is extracted from a video signal without a separate synchronizing signal generating section to record and reproduce the video signal.

3. 발명의 해결방법의 요지3. The point of the solution of the invention

영상신호의 기록 및 재생에 있어서, 카메라라부터 출력되는 영상신호로부터 동기신호를 분리하여 상기 분리된 동기신호중 수직동기신호를 기록을 위한 시작어드레스 및 종료어드레스로 이용하고, 복합동기신호나 수평 동기신호를 샘플링 클럭신호로 사용하여 아날로그 영상신호를 디지탈 신호로 변환하여 기록하고, 재생시에도 카메라를 구동시켜 카메라에서 출력되는 영상신호로부터 동기신호를 분리하고, 상기 분리된 수직동기신호 및 수평동기신호, 복합동기신호를 이용하여 기록되어 있는 디지탈 영상신호를 독출하여 아날로그 신호로 변환하여 재생하도록 한다.In the recording and reproduction of a video signal, a sync signal is separated from a video signal output from a camera and a vertical sync signal among the separated sync signals is used as a start address and an end address for recording, The analog video signal is converted into a digital signal for use as a sampling clock signal, and the analog video signal is converted into a digital signal for recording, and the camera is driven during reproduction to separate the synchronous signal from the video signal output from the camera, The digital video signal recorded by using the synchronizing signal is read and converted into an analog signal for reproduction.

4. 발명의 중요한 용도4. Important Uses of the Invention

영상신호 기록 및 재생장치.A video signal recording and reproducing apparatus.

Description

영상신호 기록 및 재생장치Video signal recording and reproducing apparatus

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제2도는 본 발명에 따른 영상신호 기록 및 재생장치의 블럭구성도.FIG. 2 is a block diagram of a video signal recording and reproducing apparatus according to the present invention; FIG.

Claims (1)

영상신호를 기록하기 위한 메모리를 구비한 영상신호 기록 및 재생장치에 있어서, 영상신호 기록 및 재생을 위한 어드레스 및 칩셀렉트신호, A/D인에이블,D/A인에이블신호를 각각 발생하며, 복합동기신호(C-Sync), 수평동기신호(H-Sync), 수직동기신호(V-Sync), 필드신호를 받아 영상신호의 기록 및 재생을 제어하는 제어수단과, 상기 제어수단의 제어에 의해 상기 메모리로부터 독출되는 디지탈 영상 신호를 상기 샘플링클럭신호에 의해 아날로그 영상신호를 변환하는 D/A변환수단과, 상기 제어수단으로부터 기록/재생신호(REC/PLAY SIGNAL)의 선택에 따라 카메라로부터 촬상되어 입력되는 영상신호나 상기 D/A변환수단으로부터 아날로그로 변환된 재생영상신호를 선택 절환하는 절환수단과, 카메라에서 입력된 영상신호로부터 복합동기신호, 수직동기신호, 수평동기신호, 필드신호등을 분리하는 동기신호 분리수단과, 상기 동기신호 분리수단으로부터 분리된 복합동기신호나 수평동기신호에 동기를 맞추어 샘플링클럭(fs)를 발생하는 샘플링클럭 발생수단과, 상기 샘플링클럭신호를 받아 어드레스를 증가시켜 제어수단으로 공급하고, 어드레스 시작신호를 유효 영상데이타 감지수단으로 인가하는 어드레스 발생수단과, 상기 어드레스 시작신호를 받아 유효영상신호의 시작과 끝을 감지하여 제어수단으로 인가하는 유효영상신호 감지수단과, 상기 유효영상신호 영역의 아날로그신호를 샘플링 클럭에 맞추어 디지탈 영상신호를 변환하는 A/D변환수단으로 구성함을 특징으로 하는 영상신호 기록 및 재생장치.A video signal recording and reproducing apparatus having a memory for recording a video signal, the video signal recording and reproducing apparatus comprising: an address generating circuit for generating an address and a chip select signal for recording and reproducing video signals, an A / D enable signal and a D / A enable signal, Control means for controlling recording and reproduction of a video signal in response to a synchronization signal (C-Sync), a horizontal synchronization signal (H-Sync), a vertical synchronization signal (V-Sync) and a field signal; D / A conversion means for converting an analog video signal read out from the memory into an analog video signal by the sampling clock signal; and a control means for picking up an image from the camera in accordance with the selection of the recording / reproducing signal (REC / PLAY SIGNAL) Switching means for switching an input video signal or a reproduced video signal converted from the D / A conversion means into an analog video signal, a multiplexing means for selecting, from the video signal input from the camera, A sampling clock generating means for generating a sampling clock signal fs in synchronization with a composite synchronizing signal and a horizontal synchronizing signal signal separated from the synchronizing signal separating means, An address generating means for generating a valid video signal based on the start address of the effective video signal, and supplying the address signal to the control means; And an A / D conversion means for converting a digital video signal by adjusting an analog signal of the effective video signal region to a sampling clock. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960016272A 1996-05-15 1996-05-15 Apparatus for recording and playing image signal KR100191207B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960016272A KR100191207B1 (en) 1996-05-15 1996-05-15 Apparatus for recording and playing image signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960016272A KR100191207B1 (en) 1996-05-15 1996-05-15 Apparatus for recording and playing image signal

Publications (2)

Publication Number Publication Date
KR970078448A true KR970078448A (en) 1997-12-12
KR100191207B1 KR100191207B1 (en) 1999-06-15

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KR1019960016272A KR100191207B1 (en) 1996-05-15 1996-05-15 Apparatus for recording and playing image signal

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7456903B2 (en) 2004-10-05 2008-11-25 Sanyo Electric Co., Ltd. Video signal processing circuit

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