DE3890402C2 - - Google Patents

Info

Publication number
DE3890402C2
DE3890402C2 DE3890402A DE3890402A DE3890402C2 DE 3890402 C2 DE3890402 C2 DE 3890402C2 DE 3890402 A DE3890402 A DE 3890402A DE 3890402 A DE3890402 A DE 3890402A DE 3890402 C2 DE3890402 C2 DE 3890402C2
Authority
DE
Germany
Prior art keywords
signal
delay
output signal
absolute value
output
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE3890402A
Other languages
German (de)
English (en)
Other versions
DE3890402T1 (de
Inventor
Tomonori Nagaokakayo Kyoto Jp Oohashi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Application granted granted Critical
Publication of DE3890402C2 publication Critical patent/DE3890402C2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • H04N5/142—Edging; Contouring
    • 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
    • H04N5/20—Circuitry for controlling amplitude response
    • H04N5/205—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic
    • H04N5/208—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Processing Of Color Television Signals (AREA)
DE3890402A 1987-05-25 1988-05-20 Expired - Fee Related DE3890402C2 (US06262066-20010717-C00315.png)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62127831A JPS63292777A (ja) 1987-05-25 1987-05-25 輪郭補正装置

Publications (1)

Publication Number Publication Date
DE3890402C2 true DE3890402C2 (US06262066-20010717-C00315.png) 1991-02-07

Family

ID=14969741

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3890402A Expired - Fee Related DE3890402C2 (US06262066-20010717-C00315.png) 1987-05-25 1988-05-20

Country Status (5)

Country Link
US (1) US4918528A (US06262066-20010717-C00315.png)
JP (1) JPS63292777A (US06262066-20010717-C00315.png)
DE (1) DE3890402C2 (US06262066-20010717-C00315.png)
GB (1) GB2213022B (US06262066-20010717-C00315.png)
WO (1) WO1988009592A1 (US06262066-20010717-C00315.png)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4311376A1 (de) * 1992-04-09 1993-12-16 Mitsubishi Electric Corp Signalformverfahren, Signalformereinrichtung und Einrichtung zum Korrigieren des Verlaufs des Chrominanzträgersignals
DE10114813C1 (de) * 2001-03-26 2002-10-31 Micronas Munich Gmbh Verfahren und Vorrichtung zur Versteilerung von Signalübergängen bei Fernsehbildern

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4991021A (en) * 1988-06-22 1991-02-05 Nec Corporation Digital video signal compensation circuit
JP2575476B2 (ja) * 1988-10-20 1997-01-22 富士写真フイルム株式会社 画像信号処理方法およびその装置
JPH02134984A (ja) * 1988-11-15 1990-05-23 Mitsubishi Electric Corp 搬送色信号の輪郭補正装置
KR930002906B1 (ko) * 1989-12-23 1993-04-15 삼성전자 주식회사 윤곽 보정회로
JPH046960A (ja) * 1990-04-24 1992-01-10 Matsushita Electric Ind Co Ltd 映像信号処理装置
JP2725451B2 (ja) * 1990-09-07 1998-03-11 日本電気株式会社 適応型ディジタル輪郭補償ノイズキャンセル回路
KR920008630B1 (ko) * 1990-09-28 1992-10-02 삼성전자 주식회사 수평윤곽 보상회로
JP3018494B2 (ja) * 1990-11-30 2000-03-13 ソニー株式会社 特殊効果装置
EP0514196B1 (en) * 1991-05-16 1997-12-29 Victor Company Of Japan, Ltd. Picture quality improving apparatus for compensating contour of images
KR960004134B1 (ko) * 1991-06-03 1996-03-26 삼성전자주식회사 임펄스 노이즈 제거방법 및 회로
JPH05100167A (ja) * 1991-10-08 1993-04-23 Nikon Corp 輪郭強調回路
US5546135A (en) * 1992-02-28 1996-08-13 Matsushita Electric Industrial Co., Ltd. Contour restoration apparatus
KR950003035B1 (ko) * 1992-04-17 1995-03-29 주식회사 금성사 영상신호의 천이영역 강조장치 및 방법
US5369446A (en) * 1992-04-30 1994-11-29 Thomson Consumer Electronics, Inc. Video signal processor employing edge replacement, preshoots and overshoots for transient enhancement
DE4214949A1 (de) * 1992-05-06 1993-11-11 Nokia Deutschland Gmbh Anordnung zur zeitlichen Detektion einer Signalflanke eines auf einer Übertragungsleitung übertragenen elektrischen Signals
US5309243A (en) * 1992-06-10 1994-05-03 Eastman Kodak Company Method and apparatus for extending the dynamic range of an electronic imaging system
KR950006053B1 (ko) * 1992-08-03 1995-06-07 주식회사금성사 영상신호의 천이영역 강조장치와 방법
DE4309351A1 (de) * 1993-03-23 1994-09-29 Nokia Deutschland Gmbh Eine Übertragungsanordnung einer bestimmten Übertragungsbandbreite mit einer nachgeschalteten Entzerreranordnung
EP0655711B1 (en) * 1993-11-30 2000-03-29 STMicroelectronics S.r.l. Filter working on image digital signals for video appliances
KR100213048B1 (ko) * 1995-09-29 1999-08-02 윤종용 아날로그와 디지탈 비디오 모드를 갖는 수신기와 그 수신방법
JPH09244609A (ja) * 1996-03-06 1997-09-19 Matsushita Electric Ind Co Ltd 映像表示装置
JP3418061B2 (ja) * 1996-05-29 2003-06-16 株式会社日立製作所 映像信号処理装置
DE69605106T2 (de) * 1996-07-09 2000-07-20 St Microelectronics Srl Schaltung zur Chrominanzübergangsverbesserung in Echtzeitvideoempfang
US5959693A (en) * 1997-05-07 1999-09-28 General Instrument Corporation Pixel adaptive noise reduction filter for digital video
JPH1117984A (ja) * 1997-06-26 1999-01-22 Sony Corp 画像処理装置
US5966506A (en) * 1997-06-26 1999-10-12 Eastman Kodak Company Method for printing electronically sharpened images
JPH1146313A (ja) * 1997-07-25 1999-02-16 Fujitsu General Ltd 輪郭強調回路
US6510242B1 (en) 1999-10-26 2003-01-21 Sharp Laboratories Of America, Inc. Color image enhancement during YCbCr to RGB color conversion
JP3743235B2 (ja) * 1999-10-30 2006-02-08 株式会社富士通ゼネラル 輪郭強調方法及び回路
US6867817B2 (en) * 2001-12-17 2005-03-15 Koninklijke Philips Electronics N.V. Natural luminance transient enhancement
JP4325388B2 (ja) * 2003-12-12 2009-09-02 ソニー株式会社 信号処理装置、画像表示装置および信号処理方法
JP4185468B2 (ja) * 2004-03-29 2008-11-26 富士フイルム株式会社 露光装置及び撮影画像の補正方法
US8107012B2 (en) * 2004-11-29 2012-01-31 Panasonic Corporation Image process apparatus and method for contour correction

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2836582C2 (US06262066-20010717-C00315.png) * 1977-09-02 1987-05-07 N.V. Philips' Gloeilampenfabrieken, Eindhoven, Nl
EP0263617A2 (en) * 1986-09-30 1988-04-13 AT&T Corp. Video signal enhancement by adaptive digital signal processing

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU562948A1 (ru) * 1972-01-10 1977-06-25 Центральный Научно-Исследовательский Институт Связи Апертурный корректор
JPS5416923A (en) * 1977-07-08 1979-02-07 Hitachi Ltd Picture quality improving device
US4677461A (en) * 1984-07-26 1987-06-30 Mitsubishi Denki Kabushiki Kaisha Contour detecting filter
EP0179594A1 (en) * 1984-10-23 1986-04-30 EMI Limited Video signal processing
US4706113A (en) * 1985-02-18 1987-11-10 Mitsubishi Denki Kabushiki Kaisha Contour detecting filter device using PAL samples of composite video signals without separation of luminance signals therefrom
US4758891A (en) * 1986-10-20 1988-07-19 North American Philips Consumer Electronics Corp. Method and apparatus for improving the rise and fall time of a video signal
JPS63287175A (ja) * 1987-05-19 1988-11-24 Victor Co Of Japan Ltd 輪郭補償回路
JPS63292776A (ja) * 1987-05-25 1988-11-30 Mitsubishi Electric Corp 輪郭補正装置
JPS63302675A (ja) * 1987-06-02 1988-12-09 Mitsubishi Electric Corp 輪郭補正装置
JPS6424681A (en) * 1987-07-21 1989-01-26 Mitsubishi Electric Corp Sharpness improving device for video signal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2836582C2 (US06262066-20010717-C00315.png) * 1977-09-02 1987-05-07 N.V. Philips' Gloeilampenfabrieken, Eindhoven, Nl
EP0263617A2 (en) * 1986-09-30 1988-04-13 AT&T Corp. Video signal enhancement by adaptive digital signal processing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4311376A1 (de) * 1992-04-09 1993-12-16 Mitsubishi Electric Corp Signalformverfahren, Signalformereinrichtung und Einrichtung zum Korrigieren des Verlaufs des Chrominanzträgersignals
DE10114813C1 (de) * 2001-03-26 2002-10-31 Micronas Munich Gmbh Verfahren und Vorrichtung zur Versteilerung von Signalübergängen bei Fernsehbildern

Also Published As

Publication number Publication date
JPH0514469B2 (US06262066-20010717-C00315.png) 1993-02-25
GB2213022A (en) 1989-08-02
GB2213022B (en) 1991-03-27
WO1988009592A1 (en) 1988-12-01
GB8901541D0 (en) 1989-05-04
JPS63292777A (ja) 1988-11-30
US4918528A (en) 1990-04-17

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee