JP3863294B2 - ノイズ低減信号処理回路および映像表示装置 - Google Patents

ノイズ低減信号処理回路および映像表示装置 Download PDF

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Publication number
JP3863294B2
JP3863294B2 JP18712798A JP18712798A JP3863294B2 JP 3863294 B2 JP3863294 B2 JP 3863294B2 JP 18712798 A JP18712798 A JP 18712798A JP 18712798 A JP18712798 A JP 18712798A JP 3863294 B2 JP3863294 B2 JP 3863294B2
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Japan
Prior art keywords
signal
noise reduction
video signal
circuit
minimum value
Prior art date
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JP18712798A
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English (en)
Japanese (ja)
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JP2000022992A (ja
JP2000022992A5 (enExample
Inventor
勝信 木村
孝明 的野
春樹 高田
辰雄 永田
雅人 杉山
康隆 都留
幸一 須藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Hitachi Industry and Control Solutions Co Ltd
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Hitachi Ltd
Hitachi Advanced Digital Inc
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Publication date
Application filed by Hitachi Ltd, Hitachi Advanced Digital Inc filed Critical Hitachi Ltd
Priority to JP18712798A priority Critical patent/JP3863294B2/ja
Priority to US09/345,489 priority patent/US6195132B1/en
Priority to EP99305196A priority patent/EP0969658B1/en
Priority to DE69933090T priority patent/DE69933090T2/de
Publication of JP2000022992A publication Critical patent/JP2000022992A/ja
Publication of JP2000022992A5 publication Critical patent/JP2000022992A5/ja
Application granted granted Critical
Publication of JP3863294B2 publication Critical patent/JP3863294B2/ja
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Expired - Fee Related legal-status Critical Current

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    • 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

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Image Processing (AREA)
JP18712798A 1998-07-02 1998-07-02 ノイズ低減信号処理回路および映像表示装置 Expired - Fee Related JP3863294B2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP18712798A JP3863294B2 (ja) 1998-07-02 1998-07-02 ノイズ低減信号処理回路および映像表示装置
US09/345,489 US6195132B1 (en) 1998-07-02 1999-07-01 Noise reduction signal processing circuit and display apparatus
EP99305196A EP0969658B1 (en) 1998-07-02 1999-07-01 Noise reduction signal processing circuit and display apparatus
DE69933090T DE69933090T2 (de) 1998-07-02 1999-07-01 Signalverarbeitungsschaltung zur Rauschunterdrückung und Anzeigegerät

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18712798A JP3863294B2 (ja) 1998-07-02 1998-07-02 ノイズ低減信号処理回路および映像表示装置

Publications (3)

Publication Number Publication Date
JP2000022992A JP2000022992A (ja) 2000-01-21
JP2000022992A5 JP2000022992A5 (enExample) 2004-10-14
JP3863294B2 true JP3863294B2 (ja) 2006-12-27

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Family Applications (1)

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JP18712798A Expired - Fee Related JP3863294B2 (ja) 1998-07-02 1998-07-02 ノイズ低減信号処理回路および映像表示装置

Country Status (4)

Country Link
US (1) US6195132B1 (enExample)
EP (1) EP0969658B1 (enExample)
JP (1) JP3863294B2 (enExample)
DE (1) DE69933090T2 (enExample)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001045336A (ja) * 1999-07-29 2001-02-16 Matsushita Electric Ind Co Ltd ノイズ検出装置、ノイズ検出方法、信号処理装置および信号処理方法
GB2361133B (en) 2000-04-07 2004-04-14 Snell & Wilcox Ltd Video signal processing
DE10146582A1 (de) * 2001-09-21 2003-04-24 Micronas Munich Gmbh Vorrichtung und Verfahren zur Teilbandzerlegung von Bildsignalen
KR100396557B1 (ko) * 2001-10-11 2003-09-02 삼성전자주식회사 영상 신호의 노이즈 감쇄 방법 및 그 장치
KR100429804B1 (ko) * 2001-12-29 2004-05-03 삼성전자주식회사 적응적 영상 노이즈 감쇄 장치 및 그 방법
US7092584B2 (en) 2002-01-04 2006-08-15 Time Warner Entertainment Company Lp Registration of separations
US6947607B2 (en) 2002-01-04 2005-09-20 Warner Bros. Entertainment Inc. Reduction of differential resolution of separations
JP4550502B2 (ja) * 2003-07-16 2010-09-22 三星電子株式会社 並列構造のｎｔｓｃ除去フィルタ及びフィルタリング方法
US7274828B2 (en) * 2003-09-11 2007-09-25 Samsung Electronics Co., Ltd. Method and apparatus for detecting and processing noisy edges in image detail enhancement
US7570831B2 (en) * 2004-04-29 2009-08-04 Hewlett-Packard Development Company, L.P. System and method for estimating image noise
JP4551873B2 (ja) * 2006-02-07 2010-09-29 Ｏｋｉセミコンダクタ株式会社 雑音量測定装置
JP4470901B2 (ja) * 2006-03-31 2010-06-02 ソニー株式会社 撮像装置、高周波成分検出回路、高周波成分検出方法及びコンピュータプログラム
JP4863767B2 (ja) * 2006-05-22 2012-01-25 ソニー株式会社 映像信号処理装置及び画像表示装置
TWI343206B (en) * 2006-10-12 2011-06-01 Novatek Microelectronics Corp Noise estimator device of a video decoder and related method
JP2009212587A (ja) * 2008-02-29 2009-09-17 Toshiba Corp フィルタ回路、これを用いた受信機及びフィルタリング方法
TWI387335B (zh) * 2008-05-26 2013-02-21 Novatek Microelectronics Corp 信號調節電路及其視訊裝置
US8687124B2 (en) 2010-02-15 2014-04-01 Sharp Kabushiki Kaisha Signal processing device, integrated circuit, control program, and computer readable recording medium
WO2011102046A1 (ja) * 2010-02-18 2011-08-25 シャープ株式会社 画像処理システム及び表示装置
US8687125B2 (en) 2010-05-18 2014-04-01 Sharp Kabushiki Kaisha Image processing system and display device for carrying out subtraction or addition of a pixel value of a target pixel in accordance with a value equivalent to a noise quantity
WO2012060290A1 (ja) * 2010-11-02 2012-05-10 シャープ株式会社 画像処理装置、画像処理方法及び表示装置
JP2014150296A (ja) * 2011-05-25 2014-08-21 Sharp Corp 画像処理装置及び画像処理方法
JP6059451B2 (ja) * 2011-06-23 2017-01-11 ローム株式会社 発光体駆動装置及びこれを用いた照明機器
JP6064462B2 (ja) * 2012-09-07 2017-01-25 シャープ株式会社 ノイズ低減装置、プロセッサ、映像表示装置、ノイズ低減方法およびプログラム
US9241128B2 (en) 2013-02-14 2016-01-19 Warner Bros. Entertainment Inc. Video conversion technology
WO2017120234A1 (en) * 2016-01-05 2017-07-13 The Trustees Of Dartmouth College Fast amplitude detector and automatic gain control

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4562470A (en) * 1983-04-07 1985-12-31 Centre De Recherche Industrielle Du Quebec Electrical noise reducer for T.V. signals
JP2508442B2 (ja) * 1987-06-09 1996-06-19 ソニー株式会社 ノイズ除去回路
US5257109A (en) * 1990-07-02 1993-10-26 Akai Electric Co., Ltd. Magnetic recording and reproducing apparatus
DE4137404C2 (de) * 1991-11-14 1997-07-10 Philips Broadcast Television S Verfahren zur Reduktion von Rauschen
JP3006290B2 (ja) * 1992-06-25 2000-02-07 松下電器産業株式会社 ノイズ低減装置
US6097847A (en) * 1993-05-31 2000-08-01 Nec Corporation Method of and apparatus for calculating sharpness of image and apparatus for sharpening image
DE4319342C2 (de) * 1993-06-11 1999-05-20 Philips Patentverwaltung Verfahren zur Reduktion von Störungen
TW297202B (enExample) * 1993-10-13 1997-02-01 Rca Thomson Licensing Corp
EP0660595B1 (en) * 1993-12-20 2000-03-15 Matsushita Electric Industrial Co., Ltd. A noise reducer
US5574512A (en) * 1994-08-15 1996-11-12 Thomson Consumer Electronics, Inc. Motion adaptive video noise reduction system
KR0160690B1 (ko) * 1995-04-29 1999-01-15 김광호 영상신호 부호화/복호화장치에 있어서 블럭킹 효과 제거회로
GB2305054B (en) * 1995-08-29 2000-03-22 British Broadcasting Corp Blemish concealment in video signals

Also Published As

Publication number Publication date
JP2000022992A (ja) 2000-01-21
DE69933090T2 (de) 2007-04-05
DE69933090D1 (de) 2006-10-19
US6195132B1 (en) 2001-02-27
EP0969658A1 (en) 2000-01-05
EP0969658B1 (en) 2006-09-06

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