An electronic device and time piece are shown. The electronic device includes: a plurality of antenna devices; a plurality of motors; and antimagnetic plates, each fully or partially covering the motors and having cutouts at positions overlapping with the antenna devices.

A timepiece movement includes a second light emitting element, a second light receiving element, and a second wheel & pinion that drives a second hand and that has a first second wheel transmittable portion and a second second wheel transmittable portion through which light is transmittable, A control unit detects a position of the second wheel & pinion by causing the second light receiving element to receive the transmitted light emitted from the second light emitting element and transmitted through the first second wheel transmittable portion or the second second wheel transmittable portion, and a second detection wheel has a second detection wheel transmittable portion through which the transmitted light is transmittable. The control unit detects a transmitting time point at which the transmitted light is transmitted through the first second wheel transmittable portion or concurrently through the second second wheel transmittable portion and the second detection wheel transmittable portion. After the transmitting time point, when the second detection wheel transmittable portion is located at other positions except for a second detection position where the second detection wheel transmittable portion is located at the transmitting time point, the control unit causes the second light emitting element to stop light emitting.

A timepiece movement includes a second light emitting element, a second light receiving element, and a second wheel & pinion that drives a second hand and that has a first second wheel transmittable portion and a second second wheel transmittable portion through which light is transmittable, A control unit detects a position of the second wheel & pinion by causing the second light receiving element to receive the transmitted light emitted from the second light emitting element and transmitted through the first second wheel transmittable portion or the second second wheel transmittable portion, and a second detection wheel has a second detection wheel transmittable portion through which the transmitted light is transmittable. The control unit detects a transmitting time point at which the transmitted light is transmitted through the first second wheel transmittable portion or concurrently through the second second wheel transmittable portion and the second detection wheel transmittable portion. After the transmitting time point, when the second detection wheel transmittable portion is located at other positions except for a second detection position where the second detection wheel transmittable portion is located at the transmitting time point, the control unit causes the second light emitting element to stop light emitting.

An analog display device, including: a display; a processor; and an operation member, wherein the display changes a display content by the movable display performing the movement operation, the processor causes the movable display to perform a fast-forward movement operation and display a plurality of display contents in order in accordance with a first input operation, the processor stops the fast-forward movement operation in accordance with a second input operation, and when the processor causes the movable display to perform the fast-forward movement operation, the processor determines a fast-forward movement speed of the movable display in at least a part of switching between display contents which are adjacent to each other in an order of display to a high movement speed which is larger than an average movement speed of the movable display during a round of display of the plurality of display contents.

A sweep motion second function is added to an analog electronic timepiece. Angular velocity control of a stepping motor for a seconds hand in which a rotor is provided is executed. A stepping motor model calculates an equation of motion and a circuit equation regarding the stepping motor in real time. Sweep drive is executed with a sweep drive pulse width generated through performing a proportional integral of the difference between angular velocity set to (radians/second) and angular velocity of the stepping motor model. Correction of the load torque is executed using the rotor angle at the zero crossing of a back electromotive voltage generated across a coil of the stepping motor and the calculated angular velocity. A DC current is applied to coils disposed at bridges of a yoke and the detent torque of the stepping motor is reduced. Time lag is corrected using a GPS time signal.

A timepiece includes a pointer; an angular velocity sensor that is provided on the pointer and detects an angular velocity; and an azimuth detection processing unit that performs an azimuth detection process from a detection result of the angular velocity sensor.

A timepiece includes a pointer; an angular velocity sensor that is provided on the pointer and detects an angular velocity; and an azimuth detection processing unit that performs an azimuth detection process from a detection result of the angular velocity sensor.

A timepiece includes a case that is made of a conductive material, a bezel that is made of a nonconductive material, a patch antenna that is disposed inside the case and at the back side of the dial, and a bezel that is made of a ceramic.

A time correction system includes a timepiece, and an electronic device that corrects the time of the timepiece. The electronic device includes a display unit, a time data acquisition unit, a control unit that causes the display unit to display an instruction time of the electronic timepiece, based on the current time, and that calculates a time correction amount from a difference between the current time and the instruction time, and a light source that transmits the time correction amount to the electronic timepiece. The electronic timepiece includes an input unit that receives an operation input for correcting the time displayed by a display unit, a solar cell that receives the time correction amount from the electronic device, and a control circuit that corrects the time displayed by an indicating hand of the display unit, based on the time correction amount.

A movement includes a second light emitting element, a second light receiving element, a second wheel & pinion that drives a second hand and that has a first second wheel transmittable portion and a second second wheel transmittable portion through which light is transmittable. A control unit detects a position of the second wheel & pinion by causing the second light receiving element to receive the transmitted light emitted from the second light emitting element and transmitted through the first second wheel transmittable portion or the second second wheel transmittable portion. A second detection wheel has a second detection wheel transmittable portion through which the transmitted light is transmittable. The control unit detects a transmitting time point that the transmitted light is transmitted through the first second wheel transmittable portion or transmitted concurrently the second second wheel transmittable portion and the second detection wheel transmittable portion.