Driving device, stepping motor driving method, program, and electronic timepiece
AssigneeCasio Computer Co., Ltd.
InventorHiroyuki Hosobuchi
Life of this patent
Estimating the term…
Abstract
A driving device includes a stepping motor having a rotor, a coil for rotating the rotor, and a processor that drives the stepping motor. The processor generates a driving pulse for rotating the rotor of the stepping motor to a prescribed position, and outputs the driving pulse to the coil; and generates a rotation assistance pulse for rotating the rotor of the stepping motor at a prescribed speed, and outputs the rotation assistance pulse to the coil, after outputting the driving pulse but before EMF is produced by the rotation of the rotor of the stepping motor caused by the driving pulse.
Claims10
A driving device, comprising:
- a stepping motor including a rotor and a coil to rotate the rotor;
- and
- a processor that drives the stepping motor,
- wherein the processor:
- generates a driving pulse for rotating the rotor of the stepping motor to a prescribed position, and outputs the driving pulse to the coil;
- and
- after outputting the driving pulse but before said driving pulse causes electromotive force to be generated by the rotation of the rotor of the stepping motor, generates a rotation assistance pulse for rotating the rotor of the stepping motor at a prescribed speed.
A method of driving a stepping motor, comprising:
- outputting a driving pulse that rotates a rotor of the stepping motor to a prescribed position;
- and
- after outputting the driving pulse but before said driving pulse causes electromotive force to be generated by the rotation of the rotor of the stepping motor, outputting a rotation assistance pulse for rotating the rotor of the stepping motor at a prescribed speed.
A non-transitory storage medium having stored therein instructions executable by a processor serving as a driving device that drives a stepping motor, the instructions causing the processor to perform the following:
- outputting a driving pulse that rotates a rotor of the stepping motor to a prescribed position;
- and
- after outputting the driving pulse but before said driving pulse causes electromotive force to be generated by the rotation of the rotor of the stepping motor, outputting a rotation assistance pulse for rotating the rotor of the stepping motor at a prescribed speed.
Dependencies are inferred from the claim text.