A time information receiver that receives a standard radio wave containing a time code and analyzes the time code based on a demodulated signal of the standard radio wave includes a falling edge cycle measurement part that measures a falling edge cycle of the demodulated signal over a measurement period set in advance and counts an occurrence in which the falling edge cycle is determined to coincide with any of 400 ms, 700 ms, 1300 ms, and 1600 ms, a low level width measurement part that measures a low level width over the measurement period whenever the falling edge cycle of the demodulated signal occurs and counts an occurrence in which the measured low level width is greater than or equal to a predetermined threshold greater than 300 ms but smaller than 500 ms.

A time information receiver that receives a standard radio wave containing a time code and analyzes the time code based on a demodulated signal of the standard radio wave includes a falling edge cycle measurement part that measures a falling edge cycle of the demodulated signal over a measurement period set in advance and counts an occurrence in which the falling edge cycle is determined to coincide with any of 400 ms, 700 ms, 1300 ms, and 1600 ms, a low level width measurement part that measures a low level width over the measurement period whenever the falling edge cycle of the demodulated signal occurs and counts an occurrence in which the measured low level width is greater than or equal to a predetermined threshold greater than 300 ms but smaller than 500 ms.

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 RF clocked device can include a signal processor operable to receive an RF signal having an RF signal frequency and output a clock signal having a clock frequency based on the RF signal frequency. The RF clocked device can also include a clock operable to receive, and operate, using the clock signal. The clock can output at least one of a time and a date. In addition, a clock system can include an RF clocked device. The RF clocked device can include a signal processor operable to receive an RF signal having an RF signal frequency and output a clock signal having a clock frequency based on the RF signal frequency. The RF clocked device can also include a clock operable to receive, and operate, using the clock signal. The clock can output at least one of a time and a date. The clock system can also include a client device operable to receive timing information from the RF clocked device.

The electronic timepiece has a receiver that receives standard time signals; a detector that samples the received signal and detects the signal level; a calculator that computes, based on the detected signal level, the total signal width of a first level signal in 1-second, and the continuous time of the second level signal; and a code evaluator that determines the code transmitted in the signal based on the calculated total. The signal contains a first code and a second code in which the total signal width of the first level signal in 1 second is the same; the first code is a code that transmits the first level signal in 1 second; the second code is a code that transmits two first level signals separated by a second level signal in 1 second.

The electronic timepiece has a receiver that receives standard time signals; a detector that samples the received signal and detects the signal level; a calculator that computes, based on the detected signal level, the total signal width of a first level signal in 1-second, and the continuous time of the second level signal; and a code evaluator that determines the code transmitted in the signal based on the calculated total. The signal contains a first code and a second code in which the total signal width of the first level signal in 1 second is the same; the first code is a code that transmits the first level signal in 1 second; the second code is a code that transmits two first level signals separated by a second level signal in 1 second.

An RF clocked device can include a signal processor operable to receive an RF signal having an RF signal frequency and output a clock signal having a clock frequency based on the RF signal frequency. The RF clocked device can also include a clock operable to receive, and operate, using the clock signal. The clock can output at least one of a time and a date. In addition, a clock system can include an RF clocked device. The RF clocked device can include a signal processor operable to receive an RF signal having an RF signal frequency and output a clock signal having a clock frequency based on the RF signal frequency. The RF clocked device can also include a clock operable to receive, and operate, using the clock signal. The clock can output at least one of a time and a date. The clock system can also include a client device operable to receive timing information from the RF clocked device.

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.

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 includes a date indicator that is an analog display member, a date indicator motor that drives the date indicator, a display position storage that is a nonvolatile memory that stores position information on the date indicator, a receiver that is a time information acquirer that externally acquires time information, and a control section that outputs a drive signal to the date indicator motor and stores the position information on the date indicator in the display position storage whenever the date indicator motor activated with the drive signal drives the date indicator.