Stepping motor drive control device for an electronic apparatus
AssigneeRicoh Company, Ltd.
InventorHideto Miyazaki
Life of this patent
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Abstract
In a copier or similar electronic apparatus including a stepping motor, a device for controlling the drive of the motor loads control data for acceleration, constant-speed drive and deceleration stored in a ROM (Read Only Memory) or a RAM (Random Access Memory). The device controls the motor via a motor driver with the control data. This successfully reduces the load on a CPU (Central Processing Unit) due to the acceleration, constant-speed drive and deceleration of the motor, thereby implementing high-speed and accurate drive of the motor.
Claims9
A device for controlling drive of a stepping motor for driving a movable section of an electronic apparatus, said device comprising:
- motor drive means for driving the stepping motor;
- a microprocessor for controlling said motor drive means;
- store means for storing control data to be used during acceleration, constant-speed drive and deceleration of the stepping motor;
- and
- motor control means for loading said control data stored in said store means to said motor drive means without the intermediary of said microprocessor, and controlling the stepping motor via said motor drive means with said control data.
An electronic apparatus having a movable section, comprising:
- a stepping motor for driving said movable section;
- and
- a control device for controlling drive of said stepping motor;
- said control device comprising:
- motor drive means for driving the stepping motor;
- a microprocessor for controlling said motor drive means;
- store means for storing control data to be used during acceleration, constant-speed drive and deceleration of the stepping motor;
- and
- motor control means for loading said control data stored in said store means without the intermediary of said microprocessor, and controlling the stepping motor via said motor drive means with said control data.
Dependencies are inferred from the claim text.