An electronic timepiece includes: a barometric pressure sensor; a letter plate that has a “MEAS” letter indicating “measurement progress”; and a second display hand that displays that measurement of a barometric pressure is being executed by pointing a region in which the “MEAS” letter is disposed in a case in which the barometric pressure sensor performs measurement of the barometric pressure.

An embodiment of an electronic timepiece includes a cylindrical exterior case, a bezel and a windshield member. In the exterior case, a circuit board is housed. The bezel is formed of a metal material to be ring-shaped, includes an inward flange part that projects from an inner side surface toward a center of the ring-shaped bezel, is arranged on an outer upper side of the exterior case and is electrically connected with the circuit board. The windshield member is formed of a transparent dielectric substance, arranged in the bezel and supported by the inward flange part. The bezel is configured to resonate with a radio wave having a desired frequency by adjustment of at least one of (i) a relative permittivity of the dielectric substance and (ii) an area of an overlap region where the inward flange part and the windshield member overlap each other.

A system for time synchronization of a network element including a GNSS receiver operative to receive at least one signal from at least one but less than four GNSS satellites, a locator operative to supply a location of a network element including the GNSS receiver to the GNSS receiver and a time synchronization calculator operative to time synchronize the network element with the GNSS satellites based on the at least one signal and the location.

An electronic timepiece enables a simple construction, and an electronic device has the electronic timepiece. A wristwatch has a button or external operating member; a controller that sets the operating mode of the wristwatch based on an input operation of the button. Based on the continuous input time that the button is operated continuously, the controller changes the operating mode between a timekeeping mode that receives a satellite signal from one or more GPS satellites and adjusts the internal time information based on time information contained in the received satellite signal; and a positioning mode that receives satellite signals from three or more GPS satellites and adjusts the internal time information based on time information and positioning information contained in the received satellite signals.

An electronic timepiece enables a simple construction, and an electronic device has the electronic timepiece. A wristwatch has a button or external operating member; a controller that sets the operating mode of the wristwatch based on an input operation of the button. Based on the continuous input time that the button is operated continuously, the controller changes the operating mode between a timekeeping mode that receives a satellite signal from one or more GPS satellites and adjusts the internal time information based on time information contained in the received satellite signal; and a positioning mode that receives satellite signals from three or more GPS satellites and adjusts the internal time information based on time information and positioning information contained in the received satellite signals.

An electronic timepiece has an outside perimeter part disposed around a dial, hands, and a control unit. Further, 40 to 60 time zone indicators including time difference information representing the time difference between Coordinated Universal Time (UTC) and the standard time used in each time zone are on the outside perimeter part. The control unit indicates a specific time zone indicator with a hand.

An electronic timepiece has an outside perimeter part disposed around a dial, hands, and a control unit. Further, 40 to 60 time zone indicators including time difference information representing the time difference between Coordinated Universal Time (UTC) and the standard time used in each time zone are on the outside perimeter part. The control unit indicates a specific time zone indicator with a hand.

An electronic timepiece includes a magnetic sensor that serves as a magnetic detection unit, a GPS reception unit that serves as a reception unit receiving positional information of a current position, a time zone setting unit that sets a time zone, a specifying unit that specifies a declination angle based on the positional information of the current position, a decision unit that decides a direction of a due north based on an output of the magnetic sensor and a declination angle, and an azimuth display unit that displays the direction of the due north decided by the decision unit.

An electronic timepiece that has a plurality of operation modes and uses a secondary battery as a power supply includes a 2 o′clock side information display unit that displays a residual quantity of the secondary battery, a navigation start switch that receives a user manipulation, and a control unit that decides an execution operation mode to be executed by the electronic timepiece among the plurality of operation modes according to the user manipulation received by the navigation start switch and switches display of a residual quantity of a battery in the 2 o′clock side information display unit according to the execution operation mode.

A method for communication within a co-operative system is provided. The co-operative system comprises a plurality of communication units, which are adapted to execute a group of tasks repeatedly in a repetition cycle: acquire raw data from at least one raw data collector, process the raw data into an information package, and broadcast of the information package. The repetition cycle lasts a predetermined time period from a start of a repetition cycle, and the at least one raw data collector collects data from a global navigation satellite system (GNSS). The raw data from the GNSS comprises a global timing signal, to which said communication units synchronize. A timing of said execution of tasks is dependent of said global timing signal. An individual acquisition time for acquiring raw data from the raw data collectors is set for each of the plurality of communication units.