Motor-drive controlling apparatus

A motor-drive controlling apparatus used in attachment with a still camera having a shutter releasing mechanism and film winding mechanism to permit alternatively a single frame photographing operation and a continuous photographing operation to be carried out with film charged therein, comprising:

• a motor circuit including a drive motor operatively coupled to and selectively driving said shutter releasing mechanism and said film winding mechanism;
• a shutter switch connected across said motor circuit and coupled to said shutter releasing mechanism so as to be actuated interlockingly with said shutter releasing mechanism;
• a motor-driven switch coupled to and actuated by said motor and connected across said motor circuit;
• at least one operating switch coupled to said motor circuit for starting the motor-drive controlling apparatus;
• a timer circuit operating in response to the operation of said at least one operating switch in association with the operation of said shutter switch, said timer circuit including means for changing its output condition when said timer circuit is successively operated longer than a length of time required from the end of operation of the shutter switch to the start of the next operation thereof;
• a control circuit coupled to said shutter switch and to said timer circuit and operating in response to the output condition of said timer circuit in association with the operation of the shutter switch for controlling the energization of said motor in association with the respective operations of the motor-driven switch and the shutter switch;
• and
• means for selecting a single frame photographing operation or a continuous photographing operation, said selecting means being connected to said timer circuit to cause the output condition thereof to be changed at once after the end of operation of said shutter switch when said single frame photographing operation is selected.

A motor-drive controlling apparatus used in attachment with a still camera having a shutter releasing mechanism and a film winding mechanism to permit alternatively a single frame photographing operation and a continuous photographing operation to be carried out with film charged therein, comprising:

• a motor circuit including a drive motor operatively coupled to and selectively driving said shutter releasing mechanism and said film winding mechanism;
• a shutter switch connected across said motor circuit and coupled to said shutter releasing mechanism so as to be actuated interlockingly with said shutter releasing mechanism;
• a motor-driven switch connected across said motor circuit;
• at least one operating switch coupled to said motor circuit for operating said motor-drive controlling apparatus;
• a first timer circuit connected to said operating switch and to said shutter switch, said first timer circuit being operative in response to the operation of said operating switch in association with the operation of said shutter switch and to change its output condition after a predetermined length of time;
• a second circuit coupled to said first timer circuit for setting a photographing interval between successive photographs in the continuous photographing operating mode, said second circuit being operative in response to an output of said first timer circuit;
• a third timer circuit connected to said second timer circuit and to said shutter switch and being operative in response to the output of the second timer circuit in association with the operation of said shutter switch and to change its output condition after a predetermined period of time;
• a control circuit connected to said third timer circuit and to said shutter switch and being operative in response to the output condition of said third timer circuit in association with the operation of said shutter switch for controlling the energization of said motor in association with the respective operations of said motor-driven switch and said shutter switch;
• and
• means for selecting said single frame photographing operation or said continuous photographing operation, said selecting means being connected to said third timer circuit and including means for changing the output condition of said third timer immediately after the operation of said shutter switch when said single frame photographing operation is selected.

A motor-drive controlling apparatus used in attachment with a still camera having a shutter releasing mechanism and a film winding mechanism to permit alternatively a single frame photographing operation and a continuous photographing operation to be carried out with film charged therein, comprising:

• a motor circuit including a drive motor operatively coupled to and selectively driving said shutter releasing mechanism and said film winding mechanism;
• a shutter switch connected across said motor circuit and including means for interlockingly coupling same to said shutter releasing mechanism so that said shutter switch is actuated simultaneously with said shutter releasing mechanism;
• a motor-driven switch connected across said motor circuit;
• at least one operating switch coupled to said motor circuit for operating the motor-drive controlling apparatus;
• a first timer circuit connected to said operating switch and to said shutter switch, said first timer circuit including means responsive to the operation of said operating switch in association with the operation of said shutter switch to render said first timer circuit operative to change its output condition a predetermined length of time after it has been rendered operative;
• a control circuit connected to said first timer circuit and to said shutter switch and being operative in response to the output condition of said first timer circuit in association with the operation of said shutter switch for controlling the energization of said motor in association with the respective operations of said motordriven switch and said shutter switch;
• a second timer circuit the output of which is connected to said first timer circuit for setting selectively a photographing interval in the continuous photographing operating mode, said second timer circuit being connected to said control circuit and being operative in response to the operation of said control circuit to control the operation of said first timer circuit in response to the output of said second timer circuit;
• and
• means for selecting said single photographing operation or said continuous photographing operation, said selecting means being connected to said first timer circuit to form a circuit for changing the output condition thereof immediately after the operation of said shutter switch when said single frame photographing operation is selected.