PT94100A - Conversor para a transformacao de um negativo fotografico de diapositivo ou cinematografico para televisao - Google Patents

Conversor para a transformacao de um negativo fotografico de diapositivo ou cinematografico para televisao

Info

Publication number
PT94100A
PT94100A PT94100A PT9410090A PT94100A PT 94100 A PT94100 A PT 94100A PT 94100 A PT94100 A PT 94100A PT 9410090 A PT9410090 A PT 9410090A PT 94100 A PT94100 A PT 94100A
Authority
PT
Portugal
Prior art keywords
cinematographic
television
transformation
converter
slot
Prior art date
Application number
PT94100A
Other languages
English (en)
Other versions
PT94100B (pt
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of PT94100A publication Critical patent/PT94100A/pt
Publication of PT94100B publication Critical patent/PT94100B/pt

Links

Classifications

    • 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
    • H04N5/253—Picture signal generating by scanning motion picture films or slide opaques, e.g. for telecine
    • 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
    • H04N5/16—Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level
    • H04N5/18—Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit
    • H04N5/185—Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit for the black level
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/11—Scanning of colour motion picture films, e.g. for telecine

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Picture Signal Circuits (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Color Television Image Signal Generators (AREA)
PT94100A 1989-05-25 1990-05-21 Conversor para a transformacao de um negativo fotografico de diapositivo ou cinematografico para televisao PT94100B (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8901307A NL8901307A (nl) 1989-05-25 1989-05-25 Omzetinrichting voor een foto-, dia- respektievelijk filmnegatief-televisie-omzetting.

Publications (2)

Publication Number Publication Date
PT94100A true PT94100A (pt) 1991-11-29
PT94100B PT94100B (pt) 1997-05-28

Family

ID=19854707

Family Applications (1)

Application Number Title Priority Date Filing Date
PT94100A PT94100B (pt) 1989-05-25 1990-05-21 Conversor para a transformacao de um negativo fotografico de diapositivo ou cinematografico para televisao

Country Status (6)

Country Link
US (1) US5053874A (pt)
EP (1) EP0400717B1 (pt)
JP (1) JPH0319581A (pt)
DE (1) DE69021271T2 (pt)
NL (1) NL8901307A (pt)
PT (1) PT94100B (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0455220B1 (en) * 1990-05-02 1999-11-03 Canon Kabushiki Kaisha Image sensing apparatus
US5247643A (en) * 1991-01-08 1993-09-21 Ast Research, Inc. Memory control circuit for optimizing copy back/line fill operation in a copy back cache system
KR930015722A (ko) * 1991-12-21 1993-07-24 이헌조 비데오 카메라의 음화 필름 촬영회로
EP1074144A1 (en) * 1998-04-23 2001-02-07 TV Photo Viewers, Inc. A device for viewing a photographic image through a television set

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952144A (en) * 1974-10-02 1976-04-20 Faxon Communications Corporation Methods and apparatus for automatic background and contrast control
FR2406922A1 (fr) * 1977-10-21 1979-05-18 Thomson Csf Dispositif d'expansion de contraste video et systeme comportant un tel dispositif
US4498105A (en) * 1982-05-27 1985-02-05 Rca Corporation Field-transfer CCD imagers with reference-black-level generation capability
JPS59193684A (ja) * 1983-04-19 1984-11-02 Fuji Photo Film Co Ltd ネガポジ反転装置
US4660091A (en) * 1985-09-16 1987-04-21 Eastman Kodak Company Exposure level correction for film-to-video conversion
JPH0797830B2 (ja) * 1986-04-08 1995-10-18 ソニー株式会社 ビデオカメラの黒レベル補正回路
JPS645569U (pt) * 1987-06-26 1989-01-12
JPH0828877B2 (ja) * 1988-07-18 1996-03-21 富士写真フイルム株式会社 自動白バランス調整方法及び装置
US4912558A (en) * 1988-12-27 1990-03-27 Eastman Kodak Company Optical image to video transfer system having enhanced resolution and contrast for dark areas of the image

Also Published As

Publication number Publication date
DE69021271T2 (de) 1996-04-04
US5053874A (en) 1991-10-01
JPH0319581A (ja) 1991-01-28
EP0400717B1 (en) 1995-08-02
NL8901307A (nl) 1990-12-17
EP0400717A1 (en) 1990-12-05
DE69021271D1 (de) 1995-09-07
PT94100B (pt) 1997-05-28

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Legal Events

Date Code Title Description
BB1A Laying open of patent application

Effective date: 19900526

FG3A Patent granted, date of granting

Effective date: 19970212

PD3A Change of proprietorship
MM3A Annulment or lapse

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 19990831