1994-03-09
1996-09-17
Gray, David M.
354286, G03B 726
Patent
active
055573657
ABSTRACT:
This invention relates to a battery check circuit of a camera which mounts, e.g., an interchangeable lens. In this invention, the number of motors in the interchangeable lens is informed to the camera via a communication, and a battery check level according to the number of motors is automatically set, thereby performing a high-precision battery check operation.
REFERENCES:
patent: 4897807 (1990-01-01), Ohsawa
patent: 4958175 (1990-09-01), Asakura et al.
patent: 5107290 (1992-04-01), Ohsawa
Canon Kabushiki Kaisha
Gray David M.
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