GB691472A - Improvements in or relating to the synchronisation of photographic film and sound records - Google Patents

Improvements in or relating to the synchronisation of photographic film and sound records

Info

Publication number
GB691472A
GB691472A GB3089249A GB3089249A GB691472A GB 691472 A GB691472 A GB 691472A GB 3089249 A GB3089249 A GB 3089249A GB 3089249 A GB3089249 A GB 3089249A GB 691472 A GB691472 A GB 691472A
Authority
GB
United Kingdom
Prior art keywords
indicia
tape
spaced
synchronisation
shutter
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
GB3089249A
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.)
Brush Development Co
Original Assignee
Brush Development Co
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 Brush Development Co filed Critical Brush Development Co
Priority to GB3089249A priority Critical patent/GB691472A/en
Publication of GB691472A publication Critical patent/GB691472A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B31/00—Associated working of cameras or projectors with sound-recording or sound-reproducing means
    • G03B31/04—Associated working of cameras or projectors with sound-recording or sound-reproducing means in which sound track is not on, but is synchronised with, a moving-picture film

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Developing Apparatuses (AREA)

Abstract

691,472. Combined sound and picture apparatus. THERMIONIC PRODUCTS, Ltd. (Brush Development Co.). Dec. 1, 1949. No. 30892/49. Class 40 (ii). To synchronise the working of moving picture apparatus and magnetic sounc reproducing apparatus, flickering light frorr the shutter 17 is reflected from the screer 20 and a mirror 40 onto the magnetic tape 36 which has spaced indicia. The indicia are so spaced that, due to the stroboscopi( effect of the flickering shutter light, they appear stationary when the two appara tuses are working synchronously. The speec of the tape is adjusted by a control knob 35 or alternatively the speed of the film drive motor 7 is varied, until the indicia appeal stationary. In a modification the indicia may be on the drive mechanism for the tape, e.g. the capstan 33. Specificatior 628,898 is referred to.
GB3089249A 1949-12-01 1949-12-01 Improvements in or relating to the synchronisation of photographic film and sound records Expired GB691472A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3089249A GB691472A (en) 1949-12-01 1949-12-01 Improvements in or relating to the synchronisation of photographic film and sound records

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3089249A GB691472A (en) 1949-12-01 1949-12-01 Improvements in or relating to the synchronisation of photographic film and sound records

Publications (1)

Publication Number Publication Date
GB691472A true GB691472A (en) 1953-05-13

Family

ID=10314748

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3089249A Expired GB691472A (en) 1949-12-01 1949-12-01 Improvements in or relating to the synchronisation of photographic film and sound records

Country Status (1)

Country Link
GB (1) GB691472A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3591265A (en) * 1968-04-18 1971-07-06 Frank B Shropshire Audio-visual projection device
FR2318439A1 (en) * 1975-07-15 1977-02-11 Agfa Gevaert Ag MAGNETIC STRIP WITH MARKS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3591265A (en) * 1968-04-18 1971-07-06 Frank B Shropshire Audio-visual projection device
FR2318439A1 (en) * 1975-07-15 1977-02-11 Agfa Gevaert Ag MAGNETIC STRIP WITH MARKS

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