The vertical coupling/uncoupling device includes a switching member and a control member, the latter being arranged to pivot about an axis of rotation to be able to be driven in rotation step-by-step successively into a plurality of distinct angular positions. The control member and the switching member respectively include a first magnetic structure and a second magnetic structure arranged to exhibit a magnet interaction therebetween. These first and second magnetic structures are arranged such that, depending on the angular position of the control member, a first magnetic force or a second magnetic force is produced, these first and second magnetic forces being oriented along said axis of rotation but in opposite directions. The switching member is subjected to an alternate movement between its first and second stable axial positions when the second magnetic structure is driven in rotation step-by-step in said given direction of rotation.

An electronic watch includes a driver controlled to be in an ON state in which a drive current is supplied to a coil of a motor and an OFF state in which the drive current is not supplied to the coil, a target current value setter configured to set a target current value in accordance with a drive voltage for driving the motor, and a driver controller configured to compare a detected current value of a current flowing to the coil with the target current value, control the driver to be in the ON state or the OFF state in accordance with a result of the comparison, and switch polarity of the drive current when detecting that an ON time, which is a duration of the ON state of the driver, meets a predetermined condition or an OFF time, which is a duration of the OFF state of the driver, meets a predetermined condition.

An example relates to a method for accessing data of a first domain that is driven by a first clock via a second clock, comprising at least one of the following: accessing the data of the first domain via the second clock during a time when the first clock is in a first logical state. An edge indicating a transition from a second logical state to the first logical is used to access data via the first clock, or accessing the data of the first domain via the second clock at edges of the first clock that are synchronized with edges of the second clock.

The vertical coupling/uncoupling device includes a switching member and a control member, the latter being arranged to pivot about an axis of rotation to be able to be driven in rotation step-by-step successively into a plurality of distinct angular positions. The control member and the switching member respectively include a first magnetic structure and a second magnetic structure arranged to exhibit a magnet interaction therebetween. These first and second magnetic structures are arranged such that, depending on the angular position of the control member, a first magnetic force or a second magnetic force is produced, these first and second magnetic forces being oriented along said axis of rotation but in opposite directions. The switching member is subjected to an alternate movement between its first and second stable axial positions when the second magnetic structure is driven in rotation step-by-step in said given direction of rotation.

A timepiece includes a first display including a hand, a second display, a solar panel provided at a position having a possibility that external light is blocked by the hand that is displaying time, and at least one processor that controls an operation mode of the first display and the second display. The at least one processor switches the operation mode between a first mode in which the hand of the first display displays the time and a second mode in which the hand is evacuated to a predetermined evacuation position that makes the external light that is blocked by the hand less as compared to in the first mode and the second display displays the time.