Motor drive apparatus
AssigneeCanon Kabushiki Kaisha
InventorsYoshitaka Watanabe, Tomonori Iwashita
Life of this patent
Estimating the term…
Abstract
A motor drive apparatus constructed to be not only attachable to cameras having mechanical coupling parts of two different types which are ordinarily not interchangeable. A change-over switch inserted in the mode signal transmission line of the motor drive apparatus closes when the apparatus is attached to a camera of the former type and opens when it is attached to a camera of the latter type.
Claims14
A motor drive apparatus to be coupled with a camera for winding film, comprising:
- (a) a winding signal terminal;
- (b) a grounding terminal;
- (c) a mode signal terminal;
- (d) a mode signal line connected to said mode signal terminal;
- and
- (e) switching means inserted in said mode signal line connected to said mode signal terminal, said means to render said mode signal line ineffective when the motor drive apparatus is attached to a camera having a mechanical coupling member of a type different from that of the apparatus.
A motor drive apparatus to be coupled with a camera for film winding, comprising:
- (a) a signal terminal arranged to be connected to the electrical ground of the camera when the motor drive apparatus is attached to the camera;
- (b) a signal line connected to said signal terminal;
- and
- (c) change-over means connected to said signal line, said change-over means being arranged to selectively bring said signal line into an effective state or into an ineffective state thereof according to the type of camera to which the motor drive apparatus is attached.
A motor drive apparatus configured for coupling to first and second associated cameras, the second associated camera having a greater number of terminals interfacing the second associated camera with said motor drive apparatus than said first associated camera, comprising:
- switching means in said motor drive apparatus, said switching means including means to position said switching means in a first position when said motor drive apparatus is coupled to the first associated camera and to a second position when said motor drive apparatus is coupled to said second associated camera.
Dependencies are inferred from the claim text.