A watch with annual calendar setting, the watch including at least one setting member configured to displace an hour hand and/or a minute hand, at least one detecting member configured to detect the date change, and at least one central processing unit configured to deduce the set date, to actuate the motor and to implement the annual calendar setting method.

A watch with annual calendar setting, the watch including at least one setting member configured to displace an hour hand and/or a minute hand, at least one detecting member configured to detect the date change, and at least one central processing unit configured to deduce the set date, to actuate the motor and to implement the annual calendar setting method.

An electronic timepiece that drives a function indicator and a calendar wheel with a single motor, and can return the function indicator to the reference position when the position of the function indicator shifts due to an external disturbance. The electronic timepiece has a function indicator for displaying information other than time; a driver that drives the function indicator; a display member that is driven in conjunction with the function indicator to display information based on time; an indicator position detector configured to detect the function indicator at an indicator position detection position; and a controller that controls the driver and the indicator position detector to execute a function indicator position detection process.

An electronic timepiece that drives a function indicator and a calendar wheel with a single motor, and can return the function indicator to the reference position when the position of the function indicator shifts due to an external disturbance. The electronic timepiece has a function indicator for displaying information other than time; a driver that drives the function indicator; a display member that is driven in conjunction with the function indicator to display information based on time; an indicator position detector configured to detect the function indicator at an indicator position detection position; and a controller that controls the driver and the indicator position detector to execute a function indicator position detection process.

A hand position identification device includes a rotation detection unit that detects a rotation state of a rotor by using an induced voltage generated in a motor for rotating a hand, a storage unit that stores a timing information piece relating to a timing at which the induced voltage exceeds a predetermined threshold, and a control unit that compares a first timing information piece stored in the storage unit and obtained in a case where the hand is located at a first position, with a second timing information piece obtained in a case where the hand is located at a second position, and that identifies the second position as an identified position in a case where a difference between the first timing information piece and the second timing information piece is equal to or more than a predetermined amount.

A hand position identification device includes a rotation detection unit that detects a rotation state of a rotor by using an induced voltage generated in a motor for rotating a hand, a storage unit that stores a timing information piece relating to a timing at which the induced voltage exceeds a predetermined threshold, and a control unit that compares a first timing information piece stored in the storage unit and obtained in a case where the hand is located at a first position, with a second timing information piece obtained in a case where the hand is located at a second position, and that identifies the second position as an identified position in a case where a difference between the first timing information piece and the second timing information piece is equal to or more than a predetermined amount.

A hand position control device includes a mode switching unit that is capable of switching between a normal hand movement mode and a manual hand position setting mode and a control unit that sets a pulse width of a driving pulse to be output to a coil of a motor that rotates a hand and sets a manual pulse width of the driving pulse in the manual hand position setting mode to be larger than a normal pulse width of the driving pulse in the normal hand movement mode.

A hand position control device includes a mode switching unit that is capable of switching between a normal hand movement mode and a manual hand position setting mode and a control unit that sets a pulse width of a driving pulse to be output to a coil of a motor that rotates a hand and sets a manual pulse width of the driving pulse in the manual hand position setting mode to be larger than a normal pulse width of the driving pulse in the normal hand movement mode.

A mechanical movement timepiece assembly with a mechanical oscillator is formed by a resonator of the balance-hairspring type, and a device for regulating the oscillation frequency thereof using an auxiliary oscillator equipped with a quartz resonator. The regulating device includes a sensor, suitable for detecting the passage of the resonator via the neutral position thereof, a measuring device suitable for measuring, on the basis of position signals supplied by the sensor, a time drift of the mechanical oscillator relative to the auxiliary oscillator, and a device for applying to the resonator mechanical braking pulses when a certain time drift is observed. For this purpose, the resonator has a braking surface which extends over at least a certain sector having a certain length along the oscillation axis and against which a braking member may press in order to momentarily brake the resonator.

A mechanical movement timepiece assembly with a mechanical oscillator is formed by a resonator of the balance-hairspring type, and a device for regulating the oscillation frequency thereof using an auxiliary oscillator equipped with a quartz resonator. The regulating device includes a sensor, suitable for detecting the passage of the resonator via the neutral position thereof, a measuring device suitable for measuring, on the basis of position signals supplied by the sensor, a time drift of the mechanical oscillator relative to the auxiliary oscillator, and a device for applying to the resonator mechanical braking pulses when a certain time drift is observed. For this purpose, the resonator has a braking surface which extends over at least a certain sector having a certain length along the oscillation axis and against which a braking member may press in order to momentarily brake the resonator.