FR2320677A1 - TV cine film scanner for colour negatives - has optical filter to equalise red and green light transmission and variable amplifier for blue (NL080277) - Google Patents

TV cine film scanner for colour negatives - has optical filter to equalise red and green light transmission and variable amplifier for blue (NL080277)

Info

Publication number
FR2320677A1
FR2320677A1 FR7623948A FR7623948A FR2320677A1 FR 2320677 A1 FR2320677 A1 FR 2320677A1 FR 7623948 A FR7623948 A FR 7623948A FR 7623948 A FR7623948 A FR 7623948A FR 2320677 A1 FR2320677 A1 FR 2320677A1
Authority
FR
France
Prior art keywords
red
blue
optical filter
equalise
green light
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.)
Granted
Application number
FR7623948A
Other languages
French (fr)
Other versions
FR2320677B1 (en
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.)
RCA Corp
Original Assignee
RCA 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
Priority claimed from GB32843/75A external-priority patent/GB1552217A/en
Application filed by RCA Corp filed Critical RCA Corp
Publication of FR2320677A1 publication Critical patent/FR2320677A1/en
Application granted granted Critical
Publication of FR2320677B1 publication Critical patent/FR2320677B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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

Abstract

The television cine film scanner, for colour negatives, has an optical filter to equalise the transmission of the film for red and green light and to generate equal red and green video signals. The blue video signal is amplified to make it equal to the red and green video signals. The light source, film transport system, image sensor and the optical filter are all located in a line. The gain control circuit for the blue video signal is located with the red and green gain control circuits on the outputside of the image sensor. The film negative employed has greatest transmission for the red and least for the blue component of the light source.
FR7623948A 1975-08-06 1976-08-05 TV cine film scanner for colour negatives - has optical filter to equalise red and green light transmission and variable amplifier for blue (NL080277) Granted FR2320677A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB32843/75A GB1552217A (en) 1975-08-06 1975-08-06 Negative colour film mask correction
US05/661,615 US4009489A (en) 1975-08-06 1976-02-26 Negative color film mask correction

Publications (2)

Publication Number Publication Date
FR2320677A1 true FR2320677A1 (en) 1977-03-04
FR2320677B1 FR2320677B1 (en) 1980-07-25

Family

ID=26261590

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7623948A Granted FR2320677A1 (en) 1975-08-06 1976-08-05 TV cine film scanner for colour negatives - has optical filter to equalise red and green light transmission and variable amplifier for blue (NL080277)

Country Status (5)

Country Link
JP (1) JPS5221727A (en)
CA (1) CA1087293A (en)
DE (1) DE2635129C3 (en)
FR (1) FR2320677A1 (en)
NL (1) NL7608705A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5562438A (en) * 1978-11-02 1980-05-10 Olympus Optical Co Ltd Reversal image pickup apparatus
JPS58181381A (en) * 1982-04-16 1983-10-24 Hoya Corp Color negative picture inverting device
JPS6135088A (en) * 1985-03-06 1986-02-19 Fuji Color Hanbai Kk Magnetic recording device for color photo negative

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1308453A (en) * 1960-12-22 1962-11-03 Gevaert Photo Prod Nv Color correction system for color photographic reproduction

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3484546A (en) * 1966-04-25 1969-12-16 Iit Res Inst Color television camera with single scanning beam

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1308453A (en) * 1960-12-22 1962-11-03 Gevaert Photo Prod Nv Color correction system for color photographic reproduction

Also Published As

Publication number Publication date
FR2320677B1 (en) 1980-07-25
JPS5651714B2 (en) 1981-12-07
NL7608705A (en) 1977-02-08
CA1087293A (en) 1980-10-07
DE2635129C3 (en) 1982-12-30
JPS5221727A (en) 1977-02-18
DE2635129B2 (en) 1978-07-27
DE2635129A1 (en) 1977-02-10

Similar Documents

Publication Publication Date Title
US2607845A (en) Motion-picture photography and monitoring system for color television
US2606245A (en) Unsharp mask in electronic color correction
GB974140A (en) Colour television camera system
US2981791A (en) Printing timer for making color positives on film
US2566707A (en) Color television system
FR2320677A1 (en) TV cine film scanner for colour negatives - has optical filter to equalise red and green light transmission and variable amplifier for blue (NL080277)
US4009489A (en) Negative color film mask correction
US2850563A (en) Processes for the reproduction of images in color
GB1414169A (en) Photoelectric transducer
GB1398147A (en) Image reproduction apparatus
GB1262284A (en) Improvements relating to the reproduction of multicolor scenes and prints in multicolour television
GB907978A (en) Apparatus and method for the compression of color images
GB1217453A (en) Colour television camera
JPS54139333A (en) Color television receiver
US3461224A (en) Gamma correction circuit for field sequential color television
US4492987A (en) Processor for enhancing video signals for photographic reproduction
JPS5744385A (en) Signal processing circuit of color video camera
US2961483A (en) Printing timer
GB638937A (en) Improvements in or relating to television or like systems
GB787489A (en) Color-image-reproducing apparatus of the projection type
GB1316420A (en) Automatic signal registration in colour television cameras
JP2536476B2 (en) Black level correction circuit for video camera
GB1294149A (en) Video signal generating apparatus
GB1417181A (en) Colour television cameras
US2196130A (en) Cathode ray picture scanner

Legal Events

Date Code Title Description
ST Notification of lapse