FILM INDICATOR IN FILM-PULLING PATH OF PHOTOCAMERA Russian patent published in 1995 - IPC

FIELD: photography. SUBSTANCE: film indicator includes nine frame control units with encoders 1-9, nine coincidence circuits 10-18, eight electron keys 19-26, five decoders 27- 31, three storages 32-34, indication unit 35, two photoelectric sensors 36 and 37, two amplifiers-formers 38 and 39, delay circuit 40, comparator 41, photocamera control console 42, electron switch 43, counter 44, frequency divider 45, commutator 46, power amplifier 47, motor 48 for film rewinding, exposure unit 49. EFFECT: expanded application range. 1 dwg, 1 tbl