An electronic timepiece includes a measured time display region, a reception state display region, and one indicating hand that indicates the measured time display region and the reception state display region. In addition, a scale indicating measured time measured by using a time measurement function is disposed in the measured time display region, and a scale indicating a reception state of a satellite signal is disposed in the reception state display region. The one indicating hand indicates the scale in the measured time display region when the time measurement function is executed, and indicates the scale in the reception state display region when the reception function is executed.

An electronic timepiece includes a measured time display region, a reception state display region, and one indicating hand that indicates the measured time display region and the reception state display region. In addition, a scale indicating measured time measured by using a time measurement function is disposed in the measured time display region, and a scale indicating a reception state of a satellite signal is disposed in the reception state display region. The one indicating hand indicates the scale in the measured time display region when the time measurement function is executed, and indicates the scale in the reception state display region when the reception function is executed.

A thin electronic timepiece can receive satellite signals and standard time signals. An electronic timepiece has a planar antenna for receiving satellite signals, a bar antenna for receiving standard time signals, a time display unit with a plurality of hands, a plurality of motors for driving the hands, a battery, and a timepiece case. In a plan view of the electronic timepiece, the planar antenna, bar antenna, and battery are disposed to positions not mutually superimposed; the plural motors are disposed inside the timepiece case at positions not superimposed in plan view with the planar antenna and bar antenna; and at least one of the plural motors is disposed superimposed in plan view with the battery inside the timepiece case.

An electronic timepiece including: an operating unit which performs an operation including at least one of transmission, reception and generation of electromagnetic waves of a predetermined strength or more; a display unit which displays information; a reception unit which receives a predetermined operation for switching a display content by the display unit between display contents according to a plurality of functions; an output control unit which sets the display content to be a basic display according to a predetermined basic function when the reception unit continuously receives the predetermined operation for a first predetermined time; and a setting unit which switches on/off of the operation of the operating unit between an operation allowed state and an operation prohibited state when the reception unit continuously receives the predetermined operation for a second predetermined time longer than the first predetermined time.

An electronic timepiece including: an operating unit which performs an operation including at least one of transmission, reception and generation of electromagnetic waves of a predetermined strength or more; a display unit which displays information; a reception unit which receives a predetermined operation for switching a display content by the display unit between display contents according to a plurality of functions; an output control unit which sets the display content to be a basic display according to a predetermined basic function when the reception unit continuously receives the predetermined operation for a first predetermined time; and a setting unit which switches on/off of the operation of the operating unit between an operation allowed state and an operation prohibited state when the reception unit continuously receives the predetermined operation for a second predetermined time longer than the first predetermined time.

Example embodiments relate to GNSS time synchronization in redundant systems. A redundant system configured with two subsystems may initially synchronize clocks from both subsystems to GNSS time from a GNSS receiver. The synchronization of the first subsystem's clock may involve using a first communication link that enables communication between the first subsystem and the GNSS receiver while the synchronization of the second subsystem's clock may involve using both the first communication link and a second communication link that enables communication between the subsystems. The redundant system may then synchronize the first subsystem's clock to the second subsystem's clock while the second subsystem's clock is still synchronized to GNSS time from the GNSS receiver based on timepulses traversing a pair of wires that connect the subsystems and the GNSS receiver.

Example embodiments relate to GNSS time synchronization in redundant systems. A redundant system configured with two subsystems may initially synchronize clocks from both subsystems to GNSS time from a GNSS receiver. The synchronization of the first subsystem's clock may involve using a first communication link that enables communication between the first subsystem and the GNSS receiver while the synchronization of the second subsystem's clock may involve using both the first communication link and a second communication link that enables communication between the subsystems. The redundant system may then synchronize the first subsystem's clock to the second subsystem's clock while the second subsystem's clock is still synchronized to GNSS time from the GNSS receiver based on timepulses traversing a pair of wires that connect the subsystems and the GNSS receiver.

An electronic timepiece includes a receiver that executes reception process to capture a position information satellite transmitting leap second information and receive a satellite signal transmitted from the captured position information satellite and a controller that acquires the leap second information on the basis of the satellite signal received by the receiver, in which the controller determines whether or not to stop the reception processing on the basis of a type of the satellite signal receivable from the position information satellite captured by the receiver.

An electronic timepiece includes a receiver that executes reception process to capture a position information satellite transmitting leap second information and receive a satellite signal transmitted from the captured position information satellite and a controller that acquires the leap second information on the basis of the satellite signal received by the receiver, in which the controller determines whether or not to stop the reception processing on the basis of a type of the satellite signal receivable from the position information satellite captured by the receiver.

Apparatuses, methods, and systems for estimating a propagation time between a first node and a second node of a wireless network are disclosed. One method includes determining a first time propagation delay between the first node and the second node based on location of the second node and the kinematic information of a third node, receiving, by the second node, a packet from the first node containing a timestamp representing a transmit time of the packet from the first node, determining a second time propagation delay between the first node and the second node based upon the difference between the reception time of the packet, and the first time stamp included within the packet, transmitting, by a second node a TX packet after a holding delay based on the first propagation delay and the second propagation delay.