KR910006964A - 잡음저감회로 - Google Patents

잡음저감회로 Download PDF

Info

Publication number
KR910006964A
KR910006964A KR1019900012993A KR900012993A KR910006964A KR 910006964 A KR910006964 A KR 910006964A KR 1019900012993 A KR1019900012993 A KR 1019900012993A KR 900012993 A KR900012993 A KR 900012993A KR 910006964 A KR910006964 A KR 910006964A
Authority
KR
South Korea
Prior art keywords
circuit
noise reduction
output
video signal
calculator
Prior art date
Application number
KR1019900012993A
Other languages
English (en)
Inventor
에쓰로 사까모또
Original Assignee
오가 노리오
소니 가부시기가이샤
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 오가 노리오, 소니 가부시기가이샤 filed Critical 오가 노리오
Publication of KR910006964A publication Critical patent/KR910006964A/ko

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/911—Television signal processing therefor for the suppression of noise
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/923—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback using preemphasis of the signal before modulation and deemphasis of the signal after demodulation

Landscapes

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

Abstract

내용 없음

Description

잡음저감회로
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본원 발명의 일실시예를 도시한 잡음저감회로도.
제2도는 트랜스버설필터의 구체예를 도시한 회로도.
제3도는 제1도의 동작을 도시한 신호파형도.

Claims (2)

  1. 입력된 영상신호의 고역신호성분을 하이패스필터에 의해 추출하여 진폭제한을 행하는 제1의 회로와, 상기 영상신호의 수직방향의 상관성을 검출하는 제2의 회로와, 상기 제1의 회로의 출력과, 상기 하이패스필터의 출력에 의해 상기 제2의 회로의 출력신호에 무게를 둔 신호를 가산하는 제1의 연산기를 구비하고, 상기 제1의 연산기의 출력과 상기 입력된 영상신호의 감산을 행하는 제2의 연산기를 설치한 것을 특징으로 하는 잡음저감회로.
  2. 제1항에 있어서, 하이패스필터의 진폭제한기의 전달함수가 입력된 영상신호의 엠파시스량에 대응한 값으로 되어, 디엠파시스회로기능을 가진 것을 특징으로 하는 잡음저감회로.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900012993A 1989-09-27 1990-08-23 잡음저감회로 KR910006964A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1249030A JPH03112275A (ja) 1989-09-27 1989-09-27 雑音低減回路
JP89-249030 1989-09-27

Publications (1)

Publication Number Publication Date
KR910006964A true KR910006964A (ko) 1991-04-30

Family

ID=17186961

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900012993A KR910006964A (ko) 1989-09-27 1990-08-23 잡음저감회로

Country Status (5)

Country Link
US (1) US5105274A (ko)
EP (1) EP0420418B1 (ko)
JP (1) JPH03112275A (ko)
KR (1) KR910006964A (ko)
DE (1) DE69025250T2 (ko)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2548448B2 (ja) * 1990-10-05 1996-10-30 松下電器産業株式会社 多次元非線形信号処理装置
GB9301336D0 (en) * 1993-01-23 1993-03-17 Ark Geophysics Limited A method of noise reduction applicable to continuous-field and other data acquired along lines
US5841491A (en) * 1993-10-14 1998-11-24 Envision Medical Corp. Fiberscope enhancement system
KR19980703741A (ko) * 1996-02-05 1998-12-05 요트.게.아.롤페즈 영상 데이타 잡음 필터링 방법 및 장치
US6077273A (en) 1996-08-23 2000-06-20 Scimed Life Systems, Inc. Catheter support for stent delivery
EP1232649A1 (en) * 2000-03-24 2002-08-21 Koninklijke Philips Electronics N.V. Electronic circuit and method for enhancing an image
JP4151243B2 (ja) * 2001-07-26 2008-09-17 三菱電機株式会社 マルチパスノイズ除去方法および除去装置、ｆｍ受信機
JP4627940B2 (ja) 2001-09-11 2011-02-09 パナソニック株式会社 ノイズ低減装置、及びノイズ低減方法
KR100702238B1 (ko) * 2005-07-04 2007-04-03 삼성전자주식회사 영상처리장치 및 영상처리방법

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3875584A (en) * 1973-10-17 1975-04-01 Nasa Television noise reduction device
JPS5667975A (en) * 1979-11-07 1981-06-08 Hitachi Ltd Preparation method of displacement changer
US4400721A (en) * 1981-07-13 1983-08-23 Albert Macovski Transition system for color television receivers
US4463375A (en) * 1982-09-07 1984-07-31 The Board Of Trustees Of The Leland Standford Junior University Multiple-measurement noise-reducing system
CA1202413A (en) * 1983-04-07 1986-03-25 Shintaro Nakagaki Noise reduction circuit for a video signal
JPS60116290A (ja) * 1983-11-28 1985-06-22 Victor Co Of Japan Ltd 映像信号の雑音低減回路
KR890004220B1 (ko) * 1984-06-30 1989-10-27 마쯔시다덴기산교 가부시기가이샤 영상신호 처리장치
JPS6125377A (ja) * 1984-07-13 1986-02-04 Victor Co Of Japan Ltd ノイズリダクシヨン回路
US4703343A (en) * 1984-12-25 1987-10-27 Matsushita Electric Industrial Co., Ltd. Noise reduction feedback type comb filter
JPH0669215B2 (ja) * 1985-06-12 1994-08-31 株式会社日立製作所 テレビジヨン受像機の垂直輪郭強調回路
US4748498A (en) * 1985-11-19 1988-05-31 Matsushita Electric Industrial Co., Ltd. Luminance signal processing circuit with recursive filter for reducing noise while retaining a high vertical resolution
JPS6318811A (ja) * 1986-07-11 1988-01-26 Victor Co Of Japan Ltd 雑音低減回路
DE3783820T2 (de) * 1986-07-21 1993-08-26 Victor Company Of Japan Vorrichtung zum aufzeichnen und wiedergeben fuer ein videosignal.
US4849826A (en) * 1986-11-14 1989-07-18 Matsushita Electric Industrial Co., Ltd. Digital non-linear pre-emphasis/de-emphasis apparatus for eliminating noise components from video signals in a video signal processing system
US4831435A (en) * 1986-11-29 1989-05-16 Samsung Electronics Co., Ltd. Adaptive scanning line converting circuit for a television receiver
JPS63232578A (ja) * 1987-03-19 1988-09-28 Sony Corp ノイズ低減回路
JPS63233677A (ja) * 1987-03-20 1988-09-29 Sony Corp ノイズ低減回路
JPS63260276A (ja) * 1987-04-16 1988-10-27 Victor Co Of Japan Ltd 画質改善装置
JPS63268376A (ja) * 1987-04-27 1988-11-07 Hitachi Ltd テレビ信号処理回路
US4860105A (en) * 1987-05-22 1989-08-22 Victor Company Of Japan, Ltd. Noise Reducing circuit of a video signal
US4864404A (en) * 1987-05-22 1989-09-05 Victor Company Of Japan, Ltd. Noise reduction circuit of a video signal
JP2508442B2 (ja) * 1987-06-09 1996-06-19 ソニー株式会社 ノイズ除去回路

Also Published As

Publication number Publication date
DE69025250T2 (de) 1996-06-20
EP0420418B1 (en) 1996-02-07
JPH03112275A (ja) 1991-05-13
DE69025250D1 (de) 1996-03-21
EP0420418A3 (en) 1992-10-14
US5105274A (en) 1992-04-14
EP0420418A2 (en) 1991-04-03

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A201 Request for examination
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NORF Unpaid initial registration fee