Photography – With data recording – Magnetically on film or film cassette
Patent
1997-07-02
1999-11-23
Metjahic, Safet
Photography
With data recording
Magnetically on film or film cassette
396409, G03B 1724
Patent
active
059915501
ABSTRACT:
A camera has a control device (MCU) for controlling magnetic recording of photographing data in units of photographing frames stored upon photographing onto the corresponding photographing frames on the film upon film rewinding. The camera has a photographable frame number detection device for detecting the number of photographable frames of the film from an information device provided to a film cartridge, and a film counter device for incrementing the count number every time one frame is photographed. Also, the camera has a film end detection device for detecting the film end, and a comparison device for comparing the number of photographable frames detected by the photographable frame number detection device with the count number of the film counter device when the film end detection device detects the film end. Furthermore, the camera has an alarm display device (DSP) for producing an alarm indicating errors in magnetic recording when the comparison device detects a non-coincidence between the two values. With this arrangement, a problem posed upon magnetically recording the photographing data during film rewinding when the film counter has caused errors during film forwarding can be solved, and an alarm display can be performed for the photographer.
REFERENCES:
patent: 5453805 (1995-09-01), Itoh
patent: 5467156 (1995-11-01), Ezawa et al.
patent: 5596381 (1997-01-01), Murakami et al.
patent: 5617161 (1997-04-01), Serita et al
patent: 5701539 (1997-12-01), Amano
Kanzaki Masatoshi
Sasagaki Nobuaki
Dalakis Michael
Metjahic Safet
Nikon Corporation
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