The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 27, 1994
Filed:
Apr. 28, 1993
John Galt, Glendale, CA (US);
James Pearman, Glendale, CA (US);
Sony Electronics, Inc., Park Ridge, NJ (US);
Abstract
A telecine system for converting motion picture film to video contains a pulldown mechanism and a rotating shutter. The telecine system creates a 3-2 film frame to video frame conversion. The pulldown mechanism transports the film and the rotating shutter exposes the film to a video camera. The pulldown mechanism contains a film aperture and a pin registration system. The film is transported over the film aperture during a pulldown period, and the pin registration system provides precise placement of the film frame over the film aperture. The pulldown periods occur during constant intervals. During a register period of the telecine system, the single film frame is held steady over the film aperture. A rotating shutter contains five apertures wherein each aperture is used to expose a film frame to the camera. The shutter exposes a diffused light source to the film frame such that a first single frame is exposed for three video fields after a first pulldown period, and a second single frame is exposed for two video fields after a second pulldown period for each rotation of the rotating shutter.