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:
Jun. 10, 1980
Filed:
Apr. 26, 1977
Yoshio Ozaki, Tokyo, JP;
Shuichi Ohta, Fujimi, JP;
Sony Corporation, Tokyo, JP;
Abstract
A telecine projector includes film supply and take-up means; a film constant-speed drive means for advancing the film at an arbitrary predetermined constant speed past a magnetic transducer; a shutter for intermittently illuminating the film at a predetermined constant rate; intermittent film advancing means for advancing the film past the shutter; a film slack detecting means for detecting whether slack in the film between the film advancing means and the film constant drive means exceeds a predetermined amount; and control means for controlling the advancing operation of the film advancing means in accordance with the output of the film slack detecting means. The film can be intermittently advanced in accordance with a film running speed which is arbitrarily predetermined while the shutter operates at the video field frequency. Fast motion reproduction and slow motion reproduction are possible. A guide is provided to prevent the film slack detecting means from falsely indicating an excess of slack upon the occurrence of a splice in the film.