KR970008073A - Video playback device and image playback method of VRC with noise line removal - Google Patents

Video playback device and image playback method of VRC with noise line removal Download PDF

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Publication number
KR970008073A
KR970008073A KR1019950020337A KR19950020337A KR970008073A KR 970008073 A KR970008073 A KR 970008073A KR 1019950020337 A KR1019950020337 A KR 1019950020337A KR 19950020337 A KR19950020337 A KR 19950020337A KR 970008073 A KR970008073 A KR 970008073A
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KR
South Korea
Prior art keywords
image
signal
speed search
vcr
switch
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KR1019950020337A
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Korean (ko)
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KR0172484B1 (en
Inventor
배광우
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구자홍
Lg 전자 주식회사
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Priority to KR1019950020337A priority Critical patent/KR0172484B1/en
Publication of KR970008073A publication Critical patent/KR970008073A/en
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Publication of KR0172484B1 publication Critical patent/KR0172484B1/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/24—Signal processing not specific to the method of recording or reproducing; Circuits therefor for reducing noise
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers

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

Abstract

본 발명은 노이즈(Noise) 선 제거기능이 보강된 브이씨알(VCR)의 영상 재생장치와 영상 재생방법에 관한 것으로서, 특히VCR의 고속 탐색시 발생하는 노이즈 선을 제거하여 고속 탐색시에도 사용자에게 선명한 화질을 제공하는 노이즈 선 제거기능이 보강된 VCR의 영상 재생장치와 영상 재생방법에 관한 것이다.The present invention relates to an image reproducing apparatus and a video reproducing method of a VCR enhanced with a noise line removing function. In particular, the present invention provides a clear image to a user even in a high-speed search by removing a noise line generated during a high-speed search of a VCR. The present invention relates to a video reproducing apparatus and a video reproducing method of a VCR having an enhanced noise line elimination function for providing an image quality.

종래 VCR의 영상 재생장치는 고속 탐색시 헤드가 테이프상의 여러 트랙을 거치면서 검출된 영상을 그대로 화면에 출력함으로써, 화면상에 노이즈 선이 나타나게 되어 고속 탐색시의 화면상태가 선명하지 않게되는 문제점이 있다.The conventional VCR video reproducing apparatus outputs the detected image to the screen as the head passes through several tracks on the tape during the high-speed search, so that noise lines appear on the screen, so that the screen state during the high-speed search is not clear. have.

따라서, 상기 문제점을 해결하기 위한 본 발명은 고속 탐색시 헤드드럼의 회전속도를 N배속하고, 고속 탐색시 헤드에서 검출된 영상을 메모리에 일시 저장시켰다가 정상적으로 입력되는 수직 동기신호(Vsync)에 동기시켜 출력함으로써, VCR의고속 탐색시 발생하는 노이즈 선을 제거하여 고속 탐색시에도 사용자에게 선명한 화질을 제공하는 노이즈 선 제거기능이 보강된 VCR의 영상 재생장치와 영상 재생방법이다.Therefore, in order to solve the above problem, the present invention speeds up the rotational speed of the head drum by N times during the high-speed search, and temporarily stores the image detected by the head in the memory during the high-speed search and synchronizes it with the vertical synchronization signal Vsync normally input. A video playback device and a video playback method of a VCR with a noise line removal function for removing noise lines generated during a high-speed search of a VCR and providing a clear picture quality to a user even at a high-speed search.

Description

노이즈 선 제거기능이 보강된 브이씨알의 영상 재생장치와 영상 재생방법Video playback device and image playback method of VRC with noise line removal

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

제7도는 본 발명의 노이즈 선 제거기능이 보강된 영상 재생장치를 보인 블럭도, 제8도는 본 발명의 영상 재생장치의 동작과정을 보인 플로우챠트.7 is a block diagram showing an image reproducing apparatus for which the noise line removing function of the present invention is enhanced, and FIG. 8 is a flowchart showing an operation process of the image reproducing apparatus of the present invention.

Claims (2)

마이컴(26)의 제어에 따라 일정 속도로 회전하는 드럼 모터(20)와, 상기 드럼모터(20)의 회전에 따라 회전하여 테이프에 기록된 영상신호를 검출하여 영상처리부(22)로 공급하는 헤드 드럼(21)과, 상기 헤드 드럼(21)에서 출력된영상신호에서 휘도신호(Y)와 칼라신호(C)를 분리한 후 영상처리하는 영상처리부(22)와, 고속 탐색시 마이컴(26)에서 일정제어신호가 입력될 때 상기 영상처리부(22)에서 출력되는 휘도신호(Y)와 칼라신호(C)를 스위치(24)의 일측 입력단(A)으로 출력하는 메모리(23)와, 마이컴(26)의 제어신호에 따라 스위칭 동작하여 메모리(23) 또는 영상처리부(22)에서 출력되는 영상신호를 선택출력하는 스위치(24)와, 상기 스위치(24)에서 출력되는 영상신호를 화면출력하는 CPT(25)와, 상기 드럼모터(20)의 회전속도를 제어하고 외부입력되는 수직동시신호(Vsync)에 따라 메모리(23)와 스위치(24)의 동작을 제어하기 위한 제어신호를 출력하는 마이컴(26)으로 구성된 것을 특징으로 하는 노이즈 선 제거기능이 보강된 브이씨알의 영상 재생장치.A drum motor 20 that rotates at a constant speed under the control of the microcomputer 26, and a head that detects an image signal recorded on a tape by rotating according to the rotation of the drum motor 20, and supplies the image signal to the image processor 22. The drum 21, an image processor 22 for separating the luminance signal Y and the color signal C from the image signal output from the head drum 21, and then processing the image, and the microcomputer 26 during high-speed search. A memory 23 for outputting the luminance signal Y and the color signal C output from the image processor 22 to one input terminal A of the switch 24 when a predetermined control signal is inputted from the image processing unit 22, The switch 24 performs a switching operation according to the control signal of the control unit 26 to selectively output the image signal output from the memory 23 or the image processor 22, and the CPT outputs the image signal output from the switch 24. 25, and the vertical simultaneous signal (Vsync) to control the rotational speed of the drum motor 20 and externally input And a microcomputer (26) for outputting a control signal for controlling the operation of the memory (23) and the switch (24) according to the present invention. 정상속도 재생모드인가를 판단하는 단계와, 상기 판단결과 정상속도 재생모드이면 드럼 모터(20)가 정상속도로 회전하도록 제어하고 스위치(24)를 B단자로 절환시켜 영상 처리부(22)에서 출력되는 영상신호가 CPT(25)상에 화면출력되도록 하는 단계와, 고속 탐색모드인가를 판단하는 단계와, 상기 판단결과 N배속 탐색모드이면 드럼 모터(20)가 N배속 회전하도록 제어하고 스위치(24)를 A단자로 절환시키는 단계와, 상기 단계 이후 외부에서 수직 동기신호가 입력될 때마다 메모리(23)로 일정 제어신호를 출력하여 이때에 영상처리부(22)에서 N배속으로 영상처리되어 메모리(23)로 입력되는1필드의 영상신호가 CPT(25)상에 화면출력되도록 하는 단계로 진행되는 것을 특징으로 하는 노이즈 선 제거기능이 보강된 브이씨알의 영상 재생방법.Determining whether it is in the normal speed regeneration mode, and if the normal speed regeneration mode is determined, the drum motor 20 is rotated at the normal speed and the switch 24 is switched to the B terminal to be output from the image processor 22. Causing the image signal to be displayed on the CPT 25, determining whether to be in the high speed search mode, and if the determination result is the Nx speed search mode, the drum motor 20 is controlled to rotate N times and the switch 24 Is switched to terminal A, and a predetermined control signal is output to the memory 23 whenever a vertical synchronization signal is input from the outside after this step. And a video signal of one field input to the CPT 25 is outputted on the CPT 25. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950020337A 1995-07-11 1995-07-11 Method and device of video reproduction for vcr with function for removing noise bar KR0172484B1 (en)

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Application Number Priority Date Filing Date Title
KR1019950020337A KR0172484B1 (en) 1995-07-11 1995-07-11 Method and device of video reproduction for vcr with function for removing noise bar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950020337A KR0172484B1 (en) 1995-07-11 1995-07-11 Method and device of video reproduction for vcr with function for removing noise bar

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KR970008073A true KR970008073A (en) 1997-02-24
KR0172484B1 KR0172484B1 (en) 1999-04-15

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