Document Type and Number:
Japanese Patent JPS5014331
Kind Code:
A
Abstract:
A process for treating amateur motion picture film with magnetic sound track, to enable the film to be cut and spliced, and apparatus for carrying out the process. In the sound track, the sounds which relate to a particular scene or frame of the image track are not recorded alongside of the frame to which they relate, but are recorded in a position offset longitudinally from the frame to which they relate, either ahead of or behind such frame. According to the process of the present invention, the sound track is re-recorded in a position longitudinally displaced from its original position so that each portion of the sound track is opposite (alongside of) the particular frame or scene to which it relates. The film can then be cut and spliced or otherwise edited in the same way that ordinary silent motion picture film is edited. When editing is completed, the sound track is re-recorded again on the film, in the proper longitudinally displaced position (with respect to each frame) so that when it is projected in a conventional amateur projector, the sound will be properly synchronized with the pictures. Apparatus according to the invention includes rollers for guiding the film in a long loop, and a sound pick-up head, erasing head, and recording head acting on the film in this loop and spaced longitudinally from each other in the direction of film travel.
Application Number:
JP4385674A
Publication Date:
February 14, 1975
Filing Date:
April 18, 1974
Export Citation:
International Classes:
G03B31/02; G03D15/00; G03B31/00; G03D15/04; G11B27/06; (IPC1-7): G03B31/02