GB538013A - Improvements in and relating to electro-optical reproduction of colour photographs - Google Patents

Improvements in and relating to electro-optical reproduction of colour photographs

Info

Publication number
GB538013A
GB538013A GB27668/39A GB2766839A GB538013A GB 538013 A GB538013 A GB 538013A GB 27668/39 A GB27668/39 A GB 27668/39A GB 2766839 A GB2766839 A GB 2766839A GB 538013 A GB538013 A GB 538013A
Authority
GB
United Kingdom
Prior art keywords
electro
relating
amplifiers
intensity
spectral components
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
Application number
GB27668/39A
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.)
Kodak Ltd
Original Assignee
Kodak 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
Application filed by Kodak Ltd filed Critical Kodak Ltd
Publication of GB538013A publication Critical patent/GB538013A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • H04N1/6016—Conversion to subtractive colour signals
    • H04N1/6022—Generating a fourth subtractive colour signal, e.g. under colour removal, black masking

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Fax Reproducing Arrangements (AREA)
  • Color Television Systems (AREA)
  • Color Television Image Signal Generators (AREA)
  • Recording Measured Values (AREA)

Abstract

538,013 Copying coloured photographs. KODAK, Ltd. Oct. 11, 1939, No. 27668. Convention date Nov. 19, 1938. Addition to 488,835. [A Specification was laid open to inspection under Sect. 91 of the Acts, April 12, 1940.] [Class 40 (iii)] A coloured photograph 10 is scanned by light from a source 13, the beam being split at 15, the multiple beams passing through colour filters 17B, 17G, 17R to cells 18B, 18G, 18R which control light values 21B, 21G, 21R recording on a monopack film 11. The intensity of at least one of the spectral components is altered in accordance with the intensity of at least one other of the spectral components, e.g. by connections between the amplifiers of the three reproducing circuits. One or more of the amplifiers may be of the exponential type described in Specification 538,012.
GB27668/39A 1937-01-16 1939-10-11 Improvements in and relating to electro-optical reproduction of colour photographs Expired GB538013A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US120964A US2253086A (en) 1937-01-16 1937-01-16 Color photography
US234422A US2249522A (en) 1937-01-16 1938-10-11 Electric circuit for color correction
US241433A US2231669A (en) 1937-01-16 1938-11-19 Color correction

Publications (1)

Publication Number Publication Date
GB538013A true GB538013A (en) 1941-07-17

Family

ID=27382548

Family Applications (4)

Application Number Title Priority Date Filing Date
GB1477/38A Expired GB488835A (en) 1937-01-16 1938-01-17 Production of photographic colour separation records
GB27667/39A Expired GB538012A (en) 1937-01-16 1939-10-11 Electro-optical systems for the transmission and reproduction of multi-coloured originals such as coloured photographs
GB27668/39A Expired GB538013A (en) 1937-01-16 1939-10-11 Improvements in and relating to electro-optical reproduction of colour photographs
GB8034/41A Expired GB552367A (en) 1937-01-16 1941-06-26 Improvements in electro-optical systems for the transmission and reproduction of multi-coloured originals such as coloured photographs

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB1477/38A Expired GB488835A (en) 1937-01-16 1938-01-17 Production of photographic colour separation records
GB27667/39A Expired GB538012A (en) 1937-01-16 1939-10-11 Electro-optical systems for the transmission and reproduction of multi-coloured originals such as coloured photographs

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB8034/41A Expired GB552367A (en) 1937-01-16 1941-06-26 Improvements in electro-optical systems for the transmission and reproduction of multi-coloured originals such as coloured photographs

Country Status (4)

Country Link
US (3) US2253086A (en)
DE (1) DE697490C (en)
FR (2) FR834838A (en)
GB (4) GB488835A (en)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2509038A (en) * 1942-08-21 1950-05-23 Rca Corp Television system
US2423769A (en) * 1942-08-21 1947-07-08 Rca Corp Color television system
US2434561A (en) * 1944-07-08 1948-01-13 Interchem Corp Color facsimile
US2566277A (en) * 1946-05-10 1951-08-28 Eastman Kodak Co Method for making color prints
US2521954A (en) * 1946-05-10 1950-09-12 Eastman Kodak Co Apparatus for making color prints
US2566264A (en) * 1946-05-10 1951-08-28 Eastman Kodak Co Method of making color prints
US2571697A (en) * 1946-06-20 1951-10-16 Eastman Kodak Co Method for correcting photographic color prints
US2560567A (en) * 1946-10-09 1951-07-17 Norman R Gunderson Apparatus and method for use in color reproduction
FR955904A (en) * 1946-12-05 1950-01-20
GB640001A (en) * 1947-02-24 1950-07-12 Nell William Yelland Improvements relating to the production of multi-colour printing surfaces
US2566693A (en) * 1947-09-13 1951-09-04 Rca Corp Color television system
US2567240A (en) * 1947-10-29 1951-09-11 Miehle Printing Press & Mfg Color facsimile system
US2605348A (en) * 1948-03-10 1952-07-29 Time Inc Color separation negative
US2606245A (en) * 1948-03-10 1952-08-05 Time Inc Unsharp mask in electronic color correction
US2529975A (en) * 1948-03-11 1950-11-14 Eastman Kodak Co Method of making color prints from color transparencies
US2657254A (en) * 1950-05-20 1953-10-27 Bell Telephone Labor Inc Color television system
US2630485A (en) * 1950-09-11 1953-03-03 Color Television Inc Color television apparatus
US2691696A (en) * 1950-10-27 1954-10-12 Eastman Kodak Co Electrooptical unsharp masking in color reproduction
US2727940A (en) * 1951-06-12 1955-12-20 Time Inc Electronic masking method and apparatus
US2748190A (en) * 1951-09-15 1956-05-29 Eastman Kodak Co Black printers and electrooptical methods of making them
US2879326A (en) * 1952-08-27 1959-03-24 Eastman Kodak Co Black printer for electro-optical reproduction
US2766319A (en) * 1952-09-16 1956-10-09 Time Inc Method of and apparatus for making a black printer for four-color reproduction
US2808453A (en) * 1953-06-01 1957-10-01 Rca Corp Color correction systems
BE530710A (en) * 1953-07-30
US2848528A (en) * 1953-07-30 1958-08-19 Rca Corp Color-correction system
US2863938A (en) * 1954-06-16 1958-12-09 Technicolor Motion Picture Printing timer
CH330517A (en) * 1954-08-16 1958-06-15 Edgar Gretener Ag Dr Method of making a subtractive color film
GB791676A (en) * 1954-09-29 1958-03-12 Edgar Gretener Method for processing a subtractive motion picture film
DE1268957B (en) * 1957-09-24 1968-05-22 Hunter Penrose Ltd Device for the production of electronically corrected negative color separations
GB857654A (en) * 1958-07-18 1961-01-04 Crosfield J F Ltd Improvements in or relating to colour reproduction systems
US3274883A (en) * 1961-03-15 1966-09-27 Ibm Optical angular orientation measuring system
US3801197A (en) * 1971-04-30 1974-04-02 Canon Kk Color electrophotographic copying apparatus capable of color balance adjustment
US3763308A (en) * 1971-10-20 1973-10-02 Fuji Photo Film Co Ltd Image reproducing system
US4858507A (en) * 1983-04-20 1989-08-22 Esselte Pendaflex Corporation Mat board cutter with adjustable cutter-carrying body

Also Published As

Publication number Publication date
US2253086A (en) 1941-08-19
GB488835A (en) 1938-07-14
GB552367A (en) 1943-04-05
US2249522A (en) 1941-07-15
US2231669A (en) 1941-02-11
GB538012A (en) 1941-07-17
FR834838A (en) 1938-12-02
FR51365E (en) 1942-06-09
DE697490C (en) 1940-10-16

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