Camera using secondary battery

Details Camera using secondary battery Camera using secondary battery

1997-12-02

1999-07-20

Perkey, W. B.

Photography

Battery insertion/removal/depletion responsive

396303, G03B 726

Patent

active

059266619

ABSTRACT:
In this invention, there is provided a camera using a secondary battery as a power source and including load means such as a flash device or motor driven by use of electric energy of the secondary battery, charging means having a charging control circuit for charging the secondary battery with electric energy supplied from an external power source provided on the exterior of the secondary battery, and a camera control circuit for "exclusively" driving and controlling the charging means and load means by use of an EEPROM as storage means, wherein the size of the camera is small, circuit protection can be attained, the precision of a specified voltage of a protection circuit on the secondary battery side is high, the design is simplified, and the manufacturing process and adjustment process can be simplified.

REFERENCES:
patent: 4260230 (1981-04-01), Suzuki

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