Camera capable of properly operating when recovering from power

Details Camera capable of properly operating when recovering from power Camera capable of properly operating when recovering from power

1997-04-09

1999-09-14

Lee, Eddie C.

Photography

Battery insertion/removal/depletion responsive

396389, 396515, G03B 726, G03B 1902

Patent

active

059535474

ABSTRACT:
A camera uses a film cartridge, which has an information recording disk which is rotatable integrally with a cartridge spool shaft and represents information inherent to a film, and feeds the film leading end portion from the cartridge by using a driver. A data detector reads the film information from the disk of the cartridge loaded in the camera. A nonvolatile memory stores the film information read from the disk. When the cartridge is loaded into the camera, the camera feeds the film leading end portion from the cartridge, reads the film information, and writes the read information in the memory. Another camera uses a film having two perforations per frame. The moving amount of the film fed by a motor controller is detected by a film driven roller rotation detector. A perforation on the film is detected by the perforation detector. Prior to at least the driving operation of the motor controller, information indicating the film feeding operation is stored in an EEPROM. The overall operations of the camera are controlled by a CPU. When a power supply is interrupted during the film feeding operation, the CPU determines the position of the next frame to be photographed on the film based on the outputs from the EEPROM, the film driven roller rotation detector, and the perforation detector.

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patent: 5541681 (1996-07-01), Cocca et al.
patent: 5598236 (1997-01-01), Ueda et al.

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