Patent
1977-11-08
1980-03-11
Gellner, Michael L.
354 60L, G03B 1720
Patent
active
041925890
ABSTRACT:
An abnormal operation warning apparatus is disclosed which is capable of evaluating the photographic result for each photographing process of a camera. The warning apparatus includes a first voltage generator for producing a first voltage signal having a level corresponding to the film sensitivity set before photographing, and a second voltage generator for producing a second voltage signal having a level corresponding to the amount of light exposed on the film for each photographing process. The two voltage signal levels from the first and second voltage generators are compared by a comparator. The photographic effect is evaluated by a discriminator in response to the comparison result, thereby preventing any subsequent abnormal or undesirable photographic result.
REFERENCES:
patent: 2588368 (1952-03-01), Edgerton
patent: 3487757 (1970-01-01), Kiper
patent: 3581634 (1971-06-01), Ort
patent: 3592113 (1971-07-01), Wasielewski
patent: 3699857 (1972-10-01), Wagner et al.
patent: 3738237 (1973-06-01), Uchiyama et al.
patent: 3765006 (1973-10-01), Takahashi et al.
patent: 3913376 (1975-10-01), Scott
patent: 4041504 (1977-08-01), Iodvalkis et al.
patent: 4051491 (1977-09-01), Toyoda
patent: 4061431 (1977-12-01), Toyoda
patent: 4065777 (1977-12-01), Maitani et al.
Asahi Kogaku Kogyo Kabushiki Kaisha
Gellner Michael L.
Perkey William B.
LandOfFree
Abnormal operation warning apparatus for a camera does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Abnormal operation warning apparatus for a camera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Abnormal operation warning apparatus for a camera will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1998866