Device for judging an unexposed frame of a film

Details Device for judging an unexposed frame of a film Device for judging an unexposed frame of a film

1996-06-06

1998-03-10

Lee, Eddie C.

Photography

Exposure data from film itself

396319, 396389, 396390, G03B 1902, G03B 1724

Patent

active

057272409

ABSTRACT:
A judging device for judging an unexposed frame of a film having a magnetic recording portion recordable with a magnetic signal, includes: a magnetic header for scanning the magnetic recording portion; a divider for dividing the magnetic recording portion into a plurality of blocks; a first judger for judging whether blocks bear a magnetic signal block by block; and a second judger for judging whether the frame corresponding to the magnetic recording portion has been exposed.

REFERENCES:
patent: 5017326 (1991-05-01), Wash et al.
patent: 5032854 (1991-07-01), Smart et al.
patent: 5281987 (1994-01-01), Nagata
patent: 5325138 (1994-06-01), Nagata
patent: 5416545 (1995-05-01), Izukawa
patent: 5432570 (1995-07-01), Ueda et al.
patent: 5477289 (1995-12-01), Smart
patent: 5617161 (1997-04-01), Serita et al.

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