GB721992A - Improvements in or relating to apparatus for scanning cinematograph film, for the purpose of generating or recording television signals - Google Patents

Improvements in or relating to apparatus for scanning cinematograph film, for the purpose of generating or recording television signals

Info

Publication number
GB721992A
GB721992A GB1310550A GB1310550A GB721992A GB 721992 A GB721992 A GB 721992A GB 1310550 A GB1310550 A GB 1310550A GB 1310550 A GB1310550 A GB 1310550A GB 721992 A GB721992 A GB 721992A
Authority
GB
United Kingdom
Prior art keywords
shaft
spring
relating
scanning
generating
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
GB1310550A
Inventor
Herbert Edward Holman
Frank Runcorn Trott
Lloyd Dyson Hadfield
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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 to GB118949A priority Critical patent/GB690482A/en
Priority to GB3232549A priority patent/GB690487A/en
Application filed by EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB1310550A priority patent/GB721992A/en
Publication of GB721992A publication Critical patent/GB721992A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/36Scanning of motion picture films, e.g. for telecine
    • H04N3/38Scanning of motion picture films, e.g. for telecine with continuously moving film
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/32Details specially adapted for motion-picture projection
    • G03B21/43Driving mechanisms
    • G03B21/44Mechanisms transmitting motion to film-strip feed; Mechanical linking of shutter and intermittent feed
    • G03B21/46Mechanisms transmitting motion to film-strip feed; Mechanical linking of shutter and intermittent feed affording adjustment for framing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Radiography Using Non-Light Waves (AREA)
  • Studio Devices (AREA)

Abstract

721,992. Kiriematograph apparatus. ELECTRIC & ' MUSICAL INDUSTRIES, Ltd. May 25, 1951 [May 25, 1950], No. 13105/50. Addition to 690,482, [Group XL (b)]. Class 97 (1). In apparatus in accordance with the parent Specification relative rotation of the two sprockets is detected by a spring constructed so that its electrical resistance is a function of its tension, e.g. a helical spring having a preload varying along its length so that the turns, separate in sequence with increasing tension. As shown, the film 2 is driven by sprockets 1 and 7 carried respectively on a shaft 4 and a hollow shaft 8 also carrying a disc 9 with a projecting pin 10 to which is secured one end of the special spring 11. The shaft 8 runs on an inner shaft 14 which carries a collar 13 with a projecting arm to which the other end of the spring is secured. A slip-ring connection 18 is provided to the collar 13. The shafts 4, 14 are both driven from a shaft 6 by worm gearing. Alternatively they may be coupled by cranks and connecting-rods.
GB1310550A 1950-05-25 1950-05-25 Improvements in or relating to apparatus for scanning cinematograph film, for the purpose of generating or recording television signals Expired GB721992A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB118949A GB690482A (en) 1950-05-25 1949-01-15 Improvements relating to apparatus for scanning cinematograph film for the purpose of generating or recording television signals
GB3232549A GB690487A (en) 1950-05-25 1949-01-15 Improvements relating to apparatus for controlling the time relationship between different occurrences, especially as applied to apparatus for scanning cinematograph film for the purpose of generating or recording television signals
GB1310550A GB721992A (en) 1950-05-25 1950-05-25 Improvements in or relating to apparatus for scanning cinematograph film, for the purpose of generating or recording television signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1310550A GB721992A (en) 1950-05-25 1950-05-25 Improvements in or relating to apparatus for scanning cinematograph film, for the purpose of generating or recording television signals

Publications (1)

Publication Number Publication Date
GB721992A true GB721992A (en) 1955-01-19

Family

ID=10016920

Family Applications (3)

Application Number Title Priority Date Filing Date
GB118949A Expired GB690482A (en) 1950-05-25 1949-01-15 Improvements relating to apparatus for scanning cinematograph film for the purpose of generating or recording television signals
GB3232549A Expired GB690487A (en) 1950-05-25 1949-01-15 Improvements relating to apparatus for controlling the time relationship between different occurrences, especially as applied to apparatus for scanning cinematograph film for the purpose of generating or recording television signals
GB1310550A Expired GB721992A (en) 1950-05-25 1950-05-25 Improvements in or relating to apparatus for scanning cinematograph film, for the purpose of generating or recording television signals

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB118949A Expired GB690482A (en) 1950-05-25 1949-01-15 Improvements relating to apparatus for scanning cinematograph film for the purpose of generating or recording television signals
GB3232549A Expired GB690487A (en) 1950-05-25 1949-01-15 Improvements relating to apparatus for controlling the time relationship between different occurrences, especially as applied to apparatus for scanning cinematograph film for the purpose of generating or recording television signals

Country Status (1)

Country Link
GB (3) GB690482A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2922841A (en) * 1953-08-17 1960-01-26 Motorola Inc Film scanning system
US3002423A (en) * 1956-04-26 1961-10-03 Bauer Eugen Gmbh Cinematographic projector
US3014090A (en) * 1959-03-03 1961-12-19 Wayne D Bartley Picture recording apparatus
CN108279548B (en) * 2017-01-06 2021-02-02 深圳光峰科技股份有限公司 Projection system

Also Published As

Publication number Publication date
GB690482A (en) 1953-04-22
GB690487A (en) 1953-04-22

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