Optics: motion pictures – With film carried control signals
Patent
1996-10-25
1998-01-20
Adams, Russell E.
Optics: motion pictures
With film carried control signals
352120, 352160, G03B 2150
Patent
active
057106169
ABSTRACT:
In a first guide unit the plural number of electrodes are provided facing the edge of a movie film containing a plurality of perforations formed along the longitudinal direction of the movie film, in a second guide unit a band shaped conducting material is provided facing the electrodes having the movie film between, and each stop position with respect to window holes is detected based on the amount of change of each electrostatic capacity changing depending on the displacement rate from each stop position of a plurality of condensers which are formed making each electrode and conducting material as a pole plate respectively and making the thickness of the movie film as the distance of pole plates. Therefore, a film position detection device, a film image display device and a movie film recording device capable of further improving the movie film position detection accuracy can be realized with the simple construction.
REFERENCES:
patent: 2868066 (1959-11-01), Argyle
patent: 3544207 (1970-12-01), John, Jr.
patent: 3622235 (1971-11-01), Yamada
patent: 3753612 (1973-08-01), Okey et al.
Inatome Kiyoshi
Saito Etsuro
Adams Russell E.
Frommer William S.
Sinderbrand Alvin
Sony Corportion
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