Electronic timepiece, movement, and motor control circuit
AssigneeSeiko Epson Corporation
InventorsReiko NAGAHAMA, Takashi KAWAGUCHI
Life of this patent
Estimating the term…
Abstract
An electronic timepiece enables driving by appropriate drive conditions even when the load on a motor changes. The electronic timepiece includes a motor having a coil; a driver that is controlled to an on state supplying drive current to the coil, and an off state not supplying the drive current; a driver controller configured to control the driver to the on state or the off state based on a control parameter and current value through the coil; and a control parameter setter configured to maintain or change the control parameter based on the on state or the off state control state of the driver controller.
Claims14
An electronic timepiece comprising:
- a motor having a coil;
- a driver that is controlled to an on state supplying drive current to the coil, and an off state not supplying the drive current;
- a driver controller configured to control the driver to the on state or the off state based on a control parameter and current value through the coil;
- and
- a control parameter setter configured to maintain or change the control parameter based on the on state or the off state control state of the driver controller.
A movement comprising:
- a motor having a coil;
- a driver that is controlled to an on state supplying drive current to the coil, and an off state not supplying the drive current;
- a driver controller configured to control the driver to the on state or the off state based on a control parameter and current value through the coil;
- and
- a control parameter setter configured to maintain or change the control parameter based on the on state or the off state control state of the driver controller.
A motor control circuit comprising:
- a driver that is controlled to an on state supplying drive current to a coil of a motor, and an off state not supplying the drive current;
- a driver controller configured to control the driver to the on state or the off state based on a control parameter and current value through the coil;
- and
- a control parameter setter configured to maintain or change the control parameter based on the on state or the off state control state of the driver controller.
Dependencies are inferred from the claim text.