KR900005422A - Image Signal Noise Reduction Circuit in Video Signal Player - Google Patents

Image Signal Noise Reduction Circuit in Video Signal Player Download PDF

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Publication number
KR900005422A
KR900005422A KR1019880012629A KR880012629A KR900005422A KR 900005422 A KR900005422 A KR 900005422A KR 1019880012629 A KR1019880012629 A KR 1019880012629A KR 880012629 A KR880012629 A KR 880012629A KR 900005422 A KR900005422 A KR 900005422A
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KR
South Korea
Prior art keywords
signal
low
frequency
color
luminance
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KR1019880012629A
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Korean (ko)
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KR950007309B1 (en
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윤종경
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안시환
삼성전자 주식회사
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Priority to KR1019880012629A priority Critical patent/KR950007309B1/en
Publication of KR900005422A publication Critical patent/KR900005422A/en
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Publication of KR950007309B1 publication Critical patent/KR950007309B1/en

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    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/24Signal processing not specific to the method of recording or reproducing; Circuits therefor for reducing noise

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

내용 없음No content

Description

영상신호 재생기에서 영상신호 잡음제거회로Image Signal Noise Reduction Circuit in Video Signal Player

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

제4도는 본 발명에 따른 영상녹화 재생기의 기록회로.4 is a recording circuit of a video recording and playback player according to the present invention.

제5도는 본 발명에 따른 영상녹화 재생기의 재생회로.5 is a playback circuit of a video recording and playback player according to the present invention.

Claims (1)

영상신호 재생기의 기록회로 및 재생회로에 있어서, 상기 영상신호 재생기의 기록회로 입력단자(80)를 통한 소정 영상신호를 입력하여 휘도신호 및 칼러신호를 분리하는 휘도 및 칼러신호 분리부(30)와, 상기 휘도 및 칼러신호 분리부(30)에서 분리된 휘도신호를 충실하게 재생하는 휘도신호 프로세서 회로부(35)와, 상기 휘도신호프로세서 회로부(35)의 휘도신호를 주파수 변조하는 주파수변조부(40)와, 상기 주파수변조부(40)에서 주파수 변조된 휘도신호를 밴드필터링하는 밴드필터부(45)와, 상기 휘도 및 칼러신호 분리부(30)에서 분리된 칼러신호를 저역 변환하는 제1저역변환부(50)와, 상기 휘도 및 칼러 신호 분리부(30)에서 분리된 칼러신호를 저역변환하는 제2저역변환부(55)와, 상기 제2저역변환부(55)에서 저역변환된 칼러신호를 주파수 변조하는 주파수 변조부(60)와, 상기 밴드패스필터(45)를 통한 휘도신호, 상기 제1저역변환부(50)를 통한 칼러신호 및 상기 주파수변조부(60)를 통한 주파수 변조된 칼러신호를 혼합하여 앰프(70)및 헤드(75)를 통해 소정 테이프에 기록하는 신호혼합부(65)와, 상기 헤드(75)를 통해 추출한 소정 영상신호를 증폭하는 앰프(95)와, 상기 앰프(95)를 통한 소정 영상신호를 저역필터링하는 제1저역 필터부(100)와, 상기 제1저역필터부(100)를 통한 영상신호를 고역필터링하여 휘도신호를 추출하는 제1고역필터부(105)와, 상기 제1고역필터부(105)에서 추출된 휘도신호를 정확하게 복조하는 휘도신호 복조부(110)와, 상기 제1저역필터부(100)를 통한 영상신호를 다시한번 저역필터링하여 칼러신호를 추출하는 제2저역필터부(120)와, 상기 제2저역필터부(120)에서 추출된 칼러신호를 저역변환하는 칼러신호 저역변환부(125)와, 상기 앰프(95)를 통한 영상신호를 고역필터링하여 주파수 변조된 칼러신호를 추출하는 제2고역필터부(135)와, 상기 제2고역필터부(135)를 통한 주파수 변조된 칼러신호를 정확하게 복조하는 칼러신호 주파수 변조 복조부(140)와, 상기 칼러신호 주파수 변조 복조부(140)에서 주파수 변조방식으로 복조된 칼러신호를 소정 밴드폭으로 필터링 재생하는 밴드패스 필터부(145)와, 상기 저역변환 칼러재생부(125)와 상기 밴드패스필터부(145)를 각각 통한 저역변환된 칼러신호와 소정 밴드폭으로 필터링된 주파수변조 칼러신호를 스위칭 통과시키는 스위치(130)와, 상기 휘도신호 복조부(110)를 통한 휘도신호와 상기 스위치(130)를 통한 저역변환 칼러신호를 혼합하거나 상기 휘도신호 복조부(110)를 통한 휘도신호가 상기스위치(130)를 통한 주파수변환 칼러신호를 혼합하여 출력단자(150)를 통해 소정의 시스템으로 출력하는 신호혼합부(115)로 구성됨을 특징으로 하는 영상신호 재생기에서 영상신호 잡음제거회로.A recording and reproducing circuit of a video signal reproducing apparatus, comprising: a luminance and color signal separating section 30 for inputting a predetermined video signal through the recording circuit input terminal 80 of the video signal reproducing unit to separate the luminance signal and the color signal; A luminance signal processor circuit 35 for faithfully reproducing the luminance signal separated by the luminance and color signal separator 30, and a frequency modulator 40 for frequency-modulating the luminance signal of the luminance signal processor circuit 35. ), A band filter unit 45 for band-filtering the luminance signal frequency-modulated by the frequency modulator 40, and a first low pass for low-frequency conversion of the color signal separated by the luminance and color signal separation unit 30. A second low-pass converter 55 for low-converting the color signal separated by the converter 50, the luminance and the color signal separator 30, and a color low-converted by the second low-pass converter 55. Frequency to frequency modulate the signal Amplifying unit 60, the luminance signal through the band pass filter 45, the color signal through the first low-pass converter 50 and the frequency-modulated color signal through the frequency modulator 60, the amplifier 70 and a signal mixing unit 65 for recording to a predetermined tape through the head 75, an amplifier 95 for amplifying a predetermined video signal extracted through the head 75, and through the amplifier 95 A first low pass filter unit 100 for low-pass filtering a predetermined video signal, a first high pass filter 105 for extracting a luminance signal by high pass filtering the video signal through the first low pass filter unit 100, and A luminance signal demodulation unit 110 for accurately demodulating the luminance signal extracted by the first high pass filter unit 105 and a low pass filtering of the image signal through the first low pass filter unit 100 are extracted to extract the color signal. A second low pass filter 120 and a knife for low-pass converting the color signal extracted by the second low pass filter 120 A second high pass filter 135 and a second high pass filter 135 for high frequency filtering the image signal through the amplifier 95 to extract a frequency modulated color signal; A band pass for filtering and reproducing the color signal frequency modulated demodulator 140 for accurately demodulating the frequency modulated color signal through the color signal demodulated by the color signal frequency modulated demodulator 140 at a predetermined bandwidth. A switch for switching the low-pass color signal and the frequency-modulated color signal filtered to a predetermined bandwidth through the filter unit 145, the low-pass conversion color reproduction unit 125, and the band pass filter unit 145, respectively; 130 and the brightness signal through the brightness signal demodulator 110 and the low-frequency conversion color signal through the switch 130 or the brightness signal through the brightness signal demodulator 110 may be used to control the switch 130. Frequency A color conversion signal by mixing an output terminal a video signal noise reduction in a video signal player, characterized by consisting of a signal mixing unit 115 to output a predetermined system via a 150 circuit. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019880012629A 1988-09-29 1988-09-29 Image noise removing circuit of image recording & reproducing system KR950007309B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019880012629A KR950007309B1 (en) 1988-09-29 1988-09-29 Image noise removing circuit of image recording & reproducing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019880012629A KR950007309B1 (en) 1988-09-29 1988-09-29 Image noise removing circuit of image recording & reproducing system

Publications (2)

Publication Number Publication Date
KR900005422A true KR900005422A (en) 1990-04-14
KR950007309B1 KR950007309B1 (en) 1995-07-07

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Application Number Title Priority Date Filing Date
KR1019880012629A KR950007309B1 (en) 1988-09-29 1988-09-29 Image noise removing circuit of image recording & reproducing system

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KR (1) KR950007309B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100821939B1 (en) * 2006-12-22 2008-04-15 연세대학교 산학협력단 Apparatus and method for image noise reduction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100821939B1 (en) * 2006-12-22 2008-04-15 연세대학교 산학협력단 Apparatus and method for image noise reduction

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Publication number Publication date
KR950007309B1 (en) 1995-07-07

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