Title:
切り替え可能なかき落としフィルム映写装置
Document Type and Number:
Japanese Patent JP4030584
Kind Code:
B2
Abstract:
A switchable pulldown film projection system comprising a film transport system for transporting film through a projector. The film transport system has a plurality of sprockets with teeth for engaging perforations on the film, and a pair of motors that rotate the sprockets and move the film in a frame-by-frame manner past an aperture in the projector. The motors are controlled by an electronic controller that changes the rotational output of the motors based on a signal related to the format of the film in terms of the number of perforations spanned by each frame on the film. The controller enables the system to switch between a variety of different film formats, on the same projector and on the same strip of film, without substantially interrupting or delaying operation of the projector.
More Like This:
| JPH09222670 | FILM PROCESSOR |
| JPH0675299 | DISK TYPE FILM FEEDING DEVICE |
Inventors:
Goodhill, Dean Kay.
Beards, Don Pee.
Beards, Don Pee.
Application Number:
JP52857097A
Publication Date:
January 09, 2008
Filing Date:
February 03, 1997
Export Citation:
Assignee:
Goodhill, Dean Kay.
International Classes:
G03B21/44; G03B1/24; G03B21/48
Domestic Patent References:
| JP49070626A | ||||
| JP52132726A | ||||
| JP53024632U | ||||
| JP4507298A |
Foreign References:
| US4360254 |
Attorney, Agent or Firm:
Nobuyuki Kaneda
Ishibashi Masayuki
Katsuhiro Ito
Ishibashi Masayuki
Katsuhiro Ito