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WO1990007842A3 - Compensation des pertes et defauts dans des appareils de telecinema - Google Patents

Compensation des pertes et defauts dans des appareils de telecinema Download PDF

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Publication number
WO1990007842A3
WO1990007842A3 PCT/GB1989/001539 GB8901539W WO9007842A3 WO 1990007842 A3 WO1990007842 A3 WO 1990007842A3 GB 8901539 W GB8901539 W GB 8901539W WO 9007842 A3 WO9007842 A3 WO 9007842A3
Authority
WO
WIPO (PCT)
Prior art keywords
area
losses
multiplier
screen
video data
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.)
Ceased
Application number
PCT/GB1989/001539
Other languages
English (en)
Other versions
WO1990007842A2 (fr
Inventor
Terrence William Mead
Trevor Malcolm Osborne
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.)
Rank Cintel Ltd
Original Assignee
Rank Cintel Ltd
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
Priority claimed from GB888830205A external-priority patent/GB8830205D0/en
Application filed by Rank Cintel Ltd filed Critical Rank Cintel Ltd
Priority to JP90501135A priority Critical patent/JPH04506133A/ja
Priority to US07/720,449 priority patent/US5327247A/en
Priority to DE1990900303 priority patent/DE449875T1/de
Publication of WO1990007842A2 publication Critical patent/WO1990007842A2/fr
Publication of WO1990007842A3 publication Critical patent/WO1990007842A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/20—Prevention of damage to cathode-ray tubes in the event of failure of scanning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/257—Picture signal generators using flying-spot scanners
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • H04N17/002—Diagnosis, testing or measuring for television systems or their details for television cameras

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Details Of Television Scanning (AREA)
  • Studio Devices (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

Le signal que produit un appareil de télécinéma souffre de pertes et de défauts dus à des différences, en réponse à la lumière incidente des différentes zones de l'écarn balayé, qui peuvent provenir de rémanence d'images sur l'écran, de défauts et de saletés dans le système, de différences dans la taille des particules de phosphore, de particules manquantes et de pertes dans le système optique interne de l'appareil. On divise la zone de balayage en une carte de correction et on établit pour chaque zone un facteur de correction à partir de la réponse de cette zone à l'illumination incidente. La où un défaut est détecté, on lui substitue des données vidéo en provenance d'une zone adjacente. Les facteurs de correction sont enregistrés dans une mémoire à accès sélectif de consultation (50) et les données de sortie sont fournies à un multiplicateur (53) où elles sont multipliées avec les données vidéo. On peut supprimer l'apport des entrées de données vidéo au multiplicateur (53) pour charger dans ledit multiplicateur un signal d'essai. On peut réduire les rémanences d'images aux extrémités des lignes vidéo en réduisant l'intensité et/ou le temps d'arrêt du point de balayage sur toute zone de l'écran se trouvant à proximité de la fin de la ligne.
PCT/GB1989/001539 1988-12-23 1989-12-22 Compensation des pertes et defauts dans des appareils de telecinema Ceased WO1990007842A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP90501135A JPH04506133A (ja) 1988-12-23 1989-12-22 テレシネ装置中の損失および欠陥の補償
US07/720,449 US5327247A (en) 1988-12-23 1989-12-22 Compensation of losses and defects in telecine devices
DE1990900303 DE449875T1 (de) 1988-12-23 1989-12-22 Ausgleich von verlusten und fehlern bei telekinovorrichtungen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8830205.4 1988-12-23
GB888830205A GB8830205D0 (en) 1988-12-23 1988-12-23 Improvements in and relating to telecine machines
GB898913924A GB8913924D0 (en) 1988-12-23 1989-06-16 Improvements in and relating to telecine machines
GB8913924.0 1989-06-16

Publications (2)

Publication Number Publication Date
WO1990007842A2 WO1990007842A2 (fr) 1990-07-12
WO1990007842A3 true WO1990007842A3 (fr) 1990-09-07

Family

ID=26294779

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1989/001539 Ceased WO1990007842A2 (fr) 1988-12-23 1989-12-22 Compensation des pertes et defauts dans des appareils de telecinema

Country Status (6)

Country Link
US (1) US5327247A (fr)
EP (1) EP0449875B1 (fr)
JP (1) JPH04506133A (fr)
DE (2) DE68927389T2 (fr)
GB (1) GB2229885B (fr)
WO (1) WO1990007842A2 (fr)

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CA2069332A1 (fr) * 1990-09-17 1992-03-18 Patrick A. Cosgrove Etalonnage de l'equilibrage des scenes dans un numeriseur
EP0744869B1 (fr) * 1990-12-28 2000-03-22 Canon Kabushiki Kaisha Appareil de traitement d'image
KR930006700A (ko) * 1991-09-09 1993-04-21 강진구 Uhf rf 콘버터의 테스트 패턴 출력 시스템
US5680172A (en) * 1992-01-21 1997-10-21 Video Post & Transfer, Inc. Consecutive frame scanning of cinematographic film
GB2264019B (en) * 1992-01-21 1995-05-03 Rank Cintel Ltd Cathode ray tube burn compensation
GB2267406B (en) * 1992-05-20 1995-08-23 Rank Cintel Ltd Film scanners
US6075887A (en) * 1993-04-09 2000-06-13 Pandora International Ltd. High definition color modification
US5526040A (en) * 1993-06-30 1996-06-11 Eastman Kodak Company Signal processing apparatus for a photographic film scanner
JP3360922B2 (ja) * 1994-04-11 2003-01-07 株式会社日立製作所 動画像通信システム及びその画像復元装置並びにその画像復元方法
JP3628359B2 (ja) * 1994-10-19 2005-03-09 株式会社日立製作所 データ転送方法、データ送信装置、データ受信装置およびビデオメールシステム
US20010002851A1 (en) * 1995-04-14 2001-06-07 Takao Shimada Multimedia data processing system in network
GB2304932A (en) * 1995-09-06 1997-03-26 Kodak Ltd Determining correct exposure of film for telecines
US6072603A (en) * 1996-02-26 2000-06-06 Eastman Kodak Company Multiple output CCD image block balancing
JP3830574B2 (ja) * 1996-04-10 2006-10-04 松下電器産業株式会社 欠陥補正装置及びこれを用いた固体撮像装置
US5793418A (en) * 1996-08-28 1998-08-11 Eastman Kodak Company Shading correction on a CRT telecine
JP3822723B2 (ja) * 1997-08-29 2006-09-20 富士写真フイルム株式会社 画像処理装置
US6035072A (en) * 1997-12-08 2000-03-07 Read; Robert Lee Mapping defects or dirt dynamically affecting an image acquisition device
JP2002094896A (ja) * 2000-09-13 2002-03-29 Sony Corp 陰極線管および輝度制御方法
JP2003348336A (ja) * 2002-05-24 2003-12-05 Canon Inc 画像処理方法及び装置
DE10309325A1 (de) * 2003-03-04 2004-09-16 Bts Media Solutions Gmbh Einrichtung zur Kompensation von Fluktuationen einer Lichtquelle und Filmabtaster
US20050152616A1 (en) * 2004-01-09 2005-07-14 Bailey James R. Method and apparatus for automatic scanner defect detection
US8326037B1 (en) 2005-11-23 2012-12-04 Matrox Electronic Systems, Ltd. Methods and apparatus for locating an object in an image
US7280398B1 (en) * 2006-08-31 2007-10-09 Micron Technology, Inc. System and memory for sequential multi-plane page memory operations
US7834886B2 (en) * 2007-07-18 2010-11-16 Ross Video Limited Methods and apparatus for dynamic correction of data for non-uniformity
GB2479414B (en) * 2010-04-09 2015-11-11 Snell Ltd Repairing scratch impairments to an image
CN117528066B (zh) * 2024-01-05 2024-03-22 浙江双元科技股份有限公司 一种线阵相机测试系统和方法

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EP0264726A2 (fr) * 1986-10-20 1988-04-27 The Grass Valley Group, Inc. Mémoire de transformation d'image
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Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB771509A (en) * 1954-04-02 1957-04-03 Standard Telephones Cables Ltd Control circuit for cathode ray tube
GB771454A (en) * 1954-06-14 1957-04-03 Mullard Radio Valve Co Ltd Improvements in or relating to protection circuits for cathode ray tubes and the like
US3902011A (en) * 1969-11-12 1975-08-26 Meldreth Electronics Limited Image analysing
US3663750A (en) * 1971-03-16 1972-05-16 Motorola Inc Automatic beam blanking circuit for an electronic video player
US3821468A (en) * 1972-03-22 1974-06-28 Sarkes Tarzian Digital special effects generator
US3919473A (en) * 1974-01-02 1975-11-11 Corning Glass Works Signal correction system
US4227215A (en) * 1977-03-21 1980-10-07 Rca Corporation Television picture positioning apparatus
US4218711A (en) * 1978-05-12 1980-08-19 Nippon Electric Company, Ltd. Special effect device for electronically accomplishing a gradual scene shift
US4343021A (en) * 1979-08-21 1982-08-03 Ball Corporation Image sensor sensitivity variation compensator
US4314281A (en) * 1979-10-12 1982-02-02 Xerox Corporation Shading compensation for scanning apparatus
GB2115640A (en) * 1982-02-18 1983-09-07 Rca Corp Compatible wide-screen color television system
US4570181A (en) * 1982-02-18 1986-02-11 Fuji Electric Company, Ltd. Characteristic extracting apparatus
EP0264726A2 (fr) * 1986-10-20 1988-04-27 The Grass Valley Group, Inc. Mémoire de transformation d'image
US4772941A (en) * 1987-10-15 1988-09-20 Eastman Kodak Company Video display system
US4780755A (en) * 1987-10-26 1988-10-25 Tektronix, Inc. Frame buffer self-test

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Title
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Elektronik, Vol. 38, No. 2, 20 January 1989, (Munich, DE), A. MOORWOOD: "Alle Steuerfunktionen Integriert", pages 98-104 see page 101, paragraph: "Refresh" *
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Also Published As

Publication number Publication date
GB2229885A (en) 1990-10-03
GB2229885B (en) 1993-07-28
WO1990007842A2 (fr) 1990-07-12
JPH04506133A (ja) 1992-10-22
EP0449875B1 (fr) 1993-06-09
DE68927389T2 (de) 1997-04-24
US5327247A (en) 1994-07-05
DE68907064D1 (de) 1993-07-15
EP0449875A1 (fr) 1991-10-09
DE68907064T2 (de) 1993-12-23
GB8929016D0 (en) 1990-02-28
DE68927389D1 (de) 1996-11-28

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