JP2004004136A - Control program for electric wave corrected clock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric wave corrected clock, for receiving various standard electric waves to automatically correct the time in each district, efficiently performing receiving operation to achieve energy-saving and having high operability. <P>SOLUTION: This electric wave corrected clock 1 includes: a receive select means 60 for selecting a receiving object station for a standard electric wave; a receiving frequency switching means 57 for switching a tuning circuit 221 to the frequency of the selected receiving object station; a received electric wave determination means 56 for determining a success in receiving the standard electric wave; a time correcting means 55 for correcting the current time according to the time information of the standard electric wave; and a select order storing means 70 for storing the select order of the receiving object stations. The receiving select means 60 includes: a first receiving station select receiving part 61 for selecting the first receiving object station to receive; and a receiving station sequential select receiving part 62 for sequentially selecting a receiving object station to receive the electric wave according to the select order stored in the select order storage means 70. <P>COPYRIGHT: (C)2004,JPO

Description

The present invention relates to a radio-controlled timepiece and a control method of the radio-controlled timepiece.

In recent years, a radio-controlled timepiece that receives a radio wave (a long-wave standard radio wave) including time information and automatically corrects and displays the time based on the time information has been used. In particular, conventional radio-controlled timepieces have mainly been clocks (table clocks and wall clocks), but have recently been incorporated in portable watches (watches and the like).
By the way, the long-wave standard radio wave serviced in Japan includes a standard radio wave output station of Otakadoyama (East Japan) with a transmission frequency of 40 kHz and a standard radio wave output station of Haganeyama (West Japan) with a transmission frequency of 60 kHz. It is operated at different frequencies.
On the other hand, overseas, services are provided using standard radio waves of frequencies of 77.5 kHz in Germany, 60 kHz in the United Kingdom, and 60 kHz in the United States.

The conventional radio-controlled timepiece is configured to be able to receive only standard radio waves of each country, that is, only one type of standard radio waves. However, in recent years, a radio-controlled timepiece incorporating a multi-reception function capable of receiving standard radio waves of a plurality of countries and regions has been commercialized.
For example, in Japan, with the start of operation of a standard radio wave output station with a transmission frequency of 60 kHz, a radio-controlled timepiece that can support not only a standard radio wave of 40 kHz but also a standard radio wave of 60 kHz is being commercialized. Since the reception becomes possible all over the country and convenience is increasing, the interest of users is also increasing.

Furthermore, a radio-controlled timepiece that can support 40, 60, and 77.5 kHz standard radio waves can be received not only in Japan, but also in the United States and central Europe, so that the time can be adjusted even when traveling overseas. The probability of unnecessary is greatly increased, and a great advantage can be provided to the carrier of the radio-controlled timepiece.

By the way, when developing a radio-controlled timepiece incorporating such a multi-reception function, the most problem is the problem of energy consumption during reception. That is, the most consuming energy in driving the radio-controlled timepiece is the radio wave receiving operation.
For this reason, a radio-controlled timepiece with a built-in multi-reception function performs reception processing of all receivable standard radio waves when receiving standard radio waves, and receives radio waves with the best reception conditions, such as electric field strength of radio waves. It is not preferable from the viewpoint of energy saving to make it possible to automatically select an appropriate standard radio wave.
In particular, if there are two types of receivable standard radio waves, the energy consumption at the time of reception is not so large because the reception operation is performed twice. However, when three or more types of standard radio waves can be received, the energy consumption is low. In particular, there is a problem that the duration is short in a wristwatch driven by a battery or the like.

On the other hand, a method in which the user selects a country (Japan, Germany, the United States, the United Kingdom, etc.) and a region (East Japan, West Japan, etc.) in advance and receives only the standard radio wave in the selected region is also conceivable. In this case, the user has to select a receiving area, and there is a problem that the operability is poor.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a radio-controlled timepiece that can receive a different type of standard radio wave and automatically correct the time in each region, can efficiently perform a receiving operation, can save energy, and has high operability. And a control method therefor.

According to a first aspect of the invention, there is provided a radio-controlled timepiece comprising: a time-measuring means for inputting a reference signal from a reference signal source to measure a current time; a receiving means for receiving a standard radio wave including time information; and at least one of a frequency and time information format A receiving selection unit that selects a receiving target station from among the standard radio wave output stations that output different standard radio waves, and a receiving frequency of the receiving unit to a frequency corresponding to the receiving target station selected by the receiving selecting unit. Receiving frequency switching means for switching, received radio wave determining means for determining whether or not the standard radio wave has been successfully received, and, when it is determined that the standard radio wave has been successfully received, based on time information included in the standard radio wave. Time correction means for correcting the current time of the clocking means, and selection order storage means for storing the selection order of the receiving target station, wherein the reception selection means stores A first receiving station selection receiving unit that selects the first receiving target station stored in the means and receives a radio wave, and when it is determined that the first radio receiving station selection receiving unit has failed in radio wave reception, A receiving station that sequentially selects the receiving target stations and receives a radio wave until the standard radio wave is successfully received according to the selecting order stored in the selecting order storage means or until all the stored receiving target stations have been selected. And a sequential selection receiving unit.

According to the present invention, the reception selecting means selects the first reception target station set in the selection order storage means, and the reception frequency switching means can receive the standard radio wave of the reception target station. Switch the frequency of the receiving means. For example, if the standard radio wave output station of "Otakadoyama" in eastern Japan is selected as the first reception target station, the reception frequency is set to 40 kHz and the reception of the radio wave is attempted.

If the radio-controlled timepiece is located in an area where a standard radio wave of 40 kHz can be received, the standard radio wave is received by the receiving means, and the received radio wave determining means determines whether or not the reception was successful. Successful reception of a radio wave is based on whether or not a radio wave of a predetermined electric field strength has been received and the time information included in the standard radio wave is analyzed based on the time information format of each standard radio wave, and the time information is converted to the current time. Is determined based on whether or not is specified correctly. More specifically, if a plurality of standard radio waves for outputting time information (one frame) every one minute for each minute are received, and the time information of each frame is data at one minute intervals, accurate It is determined that the standard radio wave has been successfully received.
Conversely, when the radio wave of the predetermined electric field strength cannot be received, or when the data of the received radio wave does not correspond to the time information format of the selected receiving target station, the time of each continuously received frame is further reduced. If the information is not at one-minute intervals, it is determined that the reception of the standard radio wave has failed.

Only when the radio wave reception is not successful at the first reception target station, the second reception target station is selected and reception of the standard radio wave is attempted, and the radio wave reception is successful at the second reception target station. Only when there is no other station to be received, the third station to be received is selected and the reception of the standard radio wave is attempted, and only when there is a failure, another station to be received is sequentially selected. For this reason, it is not necessary to perform reception processing of all reception target stations unlike the related art, so that energy consumption can be minimized and energy saving can be achieved.
Furthermore, since the selection of the receiving target station is automatically performed, the user does not need to perform the time correction operation, and the convenience can be improved.
In addition, since the first station to be received is set to the station that has been received last time, there is a high possibility that the station can receive the standard radio wave. Because of the success, the radio wave receiving process can be performed in a short time, and the current consumption can be reduced accordingly.
If the radio wave reception has failed at all the receiving target stations, the reception may be sequentially repeated from the first receiving target station after a predetermined time has elapsed. The predetermined time may be usually set to about two to three hours, but may be set to be performed 24 hours later, for example, when radio wave reception is scheduled once a day.

According to a second aspect of the invention, there is provided a radio-controlled timepiece comprising: a time-measuring means for inputting a reference signal from a reference signal source to measure a current time; a receiving means for receiving a standard radio wave including time information; and at least one of a frequency and time information format. A receiving selection unit that selects a receiving target station from among the standard radio wave output stations that output different standard radio waves, and a receiving frequency of the receiving unit to a frequency corresponding to the receiving target station selected by the receiving selecting unit. Receiving frequency switching means for switching, received radio wave determining means for determining whether or not the standard radio wave has been successfully received, and, when it is determined that the standard radio wave has been successfully received, based on time information included in the standard radio wave. Time correction means for correcting the current time of the clocking means, and selection order storage means for storing the selection order of the receiving target station, wherein the reception selection means stores A first receiving station selection receiving unit that selects the first receiving target station stored in the means and receives a radio wave, and when it is determined that the first radio receiving station selection receiving unit has failed in radio wave reception, An optimal station detecting unit for sequentially receiving standard radio waves of receiving target stations other than the first receiving target station and detecting a receiving target station having the best radio wave receiving condition, and a receiving station detected by the optimal station detecting unit. An optimal station selection receiving unit that selects a target station and receives radio waves.

In the present invention as well, the reception at the first reception target station is attempted in the same manner as the first invention, and only when the reception is not successful, the standard radio wave of the other reception target stations is received, The reception condition of the radio wave is detected. Note that the radio wave reception conditions are conditions (states) at the time of radio wave reception such as electric field strength and reception sensitivity of radio waves, and this detection is performed by a reception time (generally one minute) for acquiring actual time information. ) Can be performed in a very short time.
Then, since the radio wave is received by selecting the receiving target station having the best reception condition, there is little possibility that the reception of the standard radio wave fails, and the radio wave can be received efficiently. In particular, since the optimum receiving target station is first detected only based on the receiving conditions, the time required to find a receivable station can be shortened as compared with the first invention even when all the stations are received. And the current consumption can be reduced.
As in the first invention, the radio wave receiving process can be performed in a short time and the current consumption can be reduced by receiving the signal at the first receiving target station.
When a station having better reception conditions than the first reception target station is not found, or when radio reception fails even with a reception target station having good conditions, similarly to the first invention, after a predetermined time elapses, The reception may be sequentially repeated from the first reception target station.

According to a third aspect of the present invention, there is provided a clocking means for inputting a reference signal from a reference signal source to time the current time, a receiving means for receiving a standard radio wave including time information, and various standard devices different in at least one of a frequency and a time information format. Reception selection means for selecting a reception target station from among the standard radio wave output stations for outputting radio waves, and reception frequency switching for switching a reception frequency of the reception means to a frequency corresponding to the reception target station selected by the reception selection means Means, a received radio wave determining means for determining whether or not the standard radio wave has been successfully received, and, when it is determined that the standard radio wave has been successfully received, the time counting means based on time information contained in the standard radio wave. Time correction means for correcting the current time, and a selection order storage means for storing the selection order of the target stations, wherein the reception selection means is stored in the selection order storage means. The first receiving station selection receiving section for selecting the first receiving target station and receiving the radio wave, and sequentially receiving the standard radio waves of the receiving target stations other than the first receiving target station, and the radio wave receiving condition is An optimum station detection unit for detecting the best reception target station; and, when the reception conditions of the reception target station detected by the optimum station detection unit are better than the first reception target station, the reception target station is determined. A first receiving station setting section for setting the first receiving target station of the selection order storage means.

に お い て In the present invention, periodic radio wave reception is performed only at the first reception target station. On the other hand, apart from this periodic radio wave reception processing, radio waves are received from another receiving target station at regular intervals, at regular intervals, or the like, and the reception conditions of the radio waves are detected. If there is a station whose reception condition is better than that of the first station, the first reception target station in the selection order storage means is replaced with that station, and the next periodic radio wave reception is performed with the updated new one. It is performed at the th receiving target station.

According to the third aspect of the invention, the periodic radio wave reception is performed only by the first station, so that the processing can be performed in a short time, and the current consumption can be reduced accordingly. Further, the first station is replaced with the best station in the investigation of the reception conditions separately from the regular reception, so that the regular radio reception is usually performed by the station having the best reception conditions. Thus, the possibility of successful radio wave reception can be increased.
Further, the radio wave reception for investigating the reception condition may be a short reception process as in the second invention. Therefore, even when all the stations have been received, the time required for finding a receivable station is as short as possible. It can be shortened and the increase in current consumption can be suppressed.

According to a fourth aspect of the present invention, there is provided a clocking means for inputting a reference signal from a reference signal source to time the current time, a receiving means for receiving a standard radio wave including time information, and various standard devices different in at least one of a frequency and a time information format. A reception selection unit that selects a reception frequency when receiving a standard radio wave of each standard radio wave output station that outputs radio waves, and a reception frequency switching unit that switches a reception frequency of the reception unit to a frequency selected by the reception selection unit. Receiving radio wave determining means for determining whether or not the reception of the standard radio wave is successful; and, when it is determined that the reception of the standard radio wave is successful, the current time of the time counting means is determined based on time information included in the standard radio wave. A time correction means for correcting time; and a selection order storage means for storing the frequency selection order, wherein the reception selection means stores one of the frequencies stored in the selection order storage means. A first frequency selection receiver for selecting a frequency of the eye and receiving radio waves, and a selection order stored in the selection order storage means when it is determined that the first frequency selection receiver has failed to receive radio waves. A frequency sequential selection receiving unit for sequentially selecting a reception frequency and receiving a radio wave until the reception of the standard radio wave is successfully completed or all the stored frequencies have been selected. It is.

According to the present invention, the reception selection means selects the first frequency set in the selection order storage means, and the reception frequency switching means switches the frequency of the reception means in accordance with the selection. If the radio-controlled timepiece is located in an area where a standard radio wave of that frequency can be received, the standard radio wave is received by the receiving means, and the received radio wave determination means determines whether or not the reception was successful. Since there are cases where standard radio waves of a plurality of receiving target stations exist at the same frequency, the received radio wave determining means determines whether (A) a radio wave of a predetermined electric field strength has been received, The received time information corresponds to the time information format of the standard radio wave of the receiving target station, and (C) as a result of analyzing the time information based on the format, the time information correctly specifies the current time. If all of the conditions are satisfied, it is determined that the standard radio wave has been successfully received. The determination as to whether or not the time is correct is made, for example, by receiving a plurality of frames of a standard radio wave that outputs time information (one frame) every one minute, and when the time information of each frame is data of one minute interval. You can judge by whether it is.
Conversely, if at least one of the above three conditions is not satisfied, it is determined that the reception of the standard radio wave has failed.

Then, only when the radio wave reception at the first frequency is not successful, the second frequency is selected and the reception of the standard radio wave is attempted, and only when the radio wave reception at the second frequency is not successful, the third frequency is selected. In other words, another frequency is selected only in the case of failure, for example, when the frequency is selected and reception of the standard radio wave is attempted. For this reason, it is not necessary to perform reception processing of all reception target stations unlike the related art, so that energy consumption can be minimized and energy saving can be achieved.
Further, since the radio wave is received by switching the frequency, the radio wave of the receiving target station that outputs the standard radio wave of the same frequency can be detected at one time. That is, due to the nature of standard radio waves, each target station is located in a different area, and even if the radio waves of each target station have the same frequency, the radio waves that can be received at a certain point are the radio waves of one target station. It is. Therefore, by performing reception at that frequency and analyzing the format of the time information when a radio wave is received, the reception target station can be easily specified.
For this reason, if there is a target station that uses the standard radio wave of the same frequency, the number of frequencies that need to be switched and received is smaller than the number of target stations. Therefore, the present invention can be performed with a small number of receptions even when detecting radio waves of all target reception target stations as compared with the first to third inventions, and energy saving can be promoted accordingly.
Further, as in the first aspect, the frequency is automatically selected, so that the user does not need to perform the time adjustment operation, and the convenience can be improved. Further, since the first frequency is set to the frequency received last time, it is highly possible that the standard radio wave can be received at that frequency, and in many cases, the radio wave is successfully received at the first frequency. Therefore, the radio wave receiving process can be performed in a short time, and the current consumption can be reduced accordingly.

According to a fifth aspect of the present invention, there is provided a clocking means for inputting a reference signal from a reference signal source to time the current time, a receiving means for receiving a standard radio wave including time information, and various standard devices different in at least one of a frequency and a time information format. A reception selection unit that selects a reception frequency when receiving a standard radio wave of each standard radio wave output station that outputs radio waves, and a reception frequency switching unit that switches a reception frequency of the reception unit to a frequency selected by the reception selection unit. Receiving radio wave determining means for determining whether or not the reception of the standard radio wave is successful; and, when it is determined that the reception of the standard radio wave is successful, the current time of the time counting means is determined based on time information included in the standard radio wave. A time correction means for correcting time; and a selection order storage means for storing the frequency selection order, wherein the reception selection means stores one of the frequencies stored in the selection order storage means. A first frequency selection receiving unit that selects an eye frequency to receive a radio wave, and a standard radio wave of a frequency other than the first frequency when it is determined that the radio frequency reception by the first frequency selection receiving unit has failed. The optimum frequency detection unit that sequentially performs the reception of the radio wave, and detects the frequency with the best radio wave reception condition, and the optimum frequency selection reception unit that selects the frequency detected by the optimum frequency detection unit and receives the radio wave, It is characterized by having.

Also in the present invention, the reception at the first frequency is attempted in the same manner as the fourth invention, and only when the reception is not successful, the standard radio wave of another frequency is received. Similarly, the reception condition of the radio wave is detected.
Then, since the radio wave is received by selecting the frequency having the best reception condition, there is little possibility that the reception of the standard radio wave fails, and the radio wave can be received efficiently. In particular, since the optimum frequency is first detected only under the reception conditions, even when all the frequencies are received, there is a high possibility that the time until finding the receivable frequency can be shortened as compared with the fourth invention. This has the advantage that current consumption can be reduced.
In addition, by receiving at the first frequency, radio wave reception processing can be performed in a short time and current consumption can be reduced. Further, since the frequency is switched instead of the receiving target station, the number of receptions can be reduced, and energy can be saved. The points are the same as the fourth invention.
Note that, when a frequency having better reception conditions than the first frequency is not found, or when radio wave reception fails even at a frequency having good conditions, similarly to the first, second, and fourth inventions, after a predetermined time elapses, The reception may be sequentially repeated from the first reception target station.

According to a sixth aspect of the present invention, there is provided a clocking means for inputting a reference signal from a reference signal source to time the current time, a receiving means for receiving a standard radio wave including time information, and various standard devices different in at least one of a frequency and a time information format. A reception selection unit that selects a reception frequency when receiving a standard radio wave of each standard radio wave output station that outputs radio waves, and a reception frequency switching unit that switches a reception frequency of the reception unit to a frequency selected by the reception selection unit. Receiving radio wave determining means for determining whether or not the reception of the standard radio wave is successful; and, when it is determined that the reception of the standard radio wave is successful, the current time of the time counting means is determined based on time information included in the standard radio wave. A time correction means for correcting time; and a selection order storage means for storing the frequency selection order, wherein the reception selection means stores one of the frequencies stored in the selection order storage means. A first frequency selection receiving unit for selecting an eye frequency and receiving a radio wave, and an optimal frequency for sequentially receiving a standard radio wave of a frequency other than the first frequency and detecting a frequency having the best radio wave reception condition A detecting unit, and a first frequency setting unit configured to set the frequency as the first frequency of the selection order storage unit when the reception condition of the frequency detected by the optimum frequency detecting unit is better than the first frequency. And the following.

In the present invention, the periodic radio wave reception is performed only at the first frequency. On the other hand, apart from this periodic radio wave reception processing, radio waves of other frequencies are received at regular intervals, at regular intervals of radio waves, or the like, and the reception conditions of the radio waves are detected. If there is a frequency that is better than the first frequency under the reception condition, the first frequency in the selection order storage means is replaced with that frequency, and the next periodic radio wave reception is performed with the updated new first radio wave. Done on frequency.
According to the sixth aspect, the periodic radio wave reception is performed only at the first frequency, so that a short-time process is sufficient and the current consumption can be reduced accordingly. Further, since the first frequency is replaced with the best one in the investigation of the reception condition separately from the regular reception, the regular radio wave reception is usually performed at the frequency having the best reception condition. Thus, the possibility of successful radio wave reception can be increased.
In addition, the radio wave reception for investigating the reception condition may be a short reception process, as in the fifth invention. Therefore, even when all the frequencies are received, the time required to find a receivable frequency is equal to the time required for the reception. It can be shortened and the increase in current consumption can be suppressed.

Here, in the first to third aspects, the received radio wave determination means analyzes the time information of the received radio wave based on the time information format of each standard radio wave output station corresponding to the selected receiving target station, and corrects the time information. It is preferable that the success or failure of the reception of the standard radio wave is determined based on whether or not the time information is obtained.
Similarly, in the fourth to sixth inventions, the received radio wave determination means analyzes the time information of the received radio wave based on the time information format of each standard radio wave output station corresponding to the selected frequency, and obtains the correct time information. It is preferable that the success or failure of the reception of the standard radio wave is determined based on whether or not is obtained.

According to such a configuration, when the received radio wave is analyzed by the received radio wave determination means, the time information format of the target standard radio wave output station can be narrowed down by the selected receiving target station or frequency. It can be done quickly when analyzing in a format. For example, if there is only one standard radio wave output station corresponding to the selected frequency, the time information need only be analyzed based on the time information format of that station, so that the analysis can be performed in a very short time.

In the first and second inventions, when the standard radio wave is successfully received by a receiving target station other than the first receiving target station, the selection order storage means stores the successfully received receiving target station in the first receiving target station. It is preferable to reset to the receiving target station.
In the fifth and sixth inventions, when the standard radio wave is successfully received at a frequency other than the first frequency, the selection order storage means resets the frequency of the successful reception to the first frequency. Is preferred.

According to such a configuration, the first reception target station or frequency is always set to the station or frequency that was able to receive the standard radio wave last time, so that the possibility of reception at the first reception target station or frequency is high. That is, the standard radio wave can be efficiently received. In particular, the standard radio wave output stations and frequencies are not changed in Japan unless they move between East and West Japan, and are not changed unless they move between countries outside Japan. They do this only during business trips and trips, and very infrequently. Therefore, in most cases, it is sufficient to receive radio waves of the same station or the same frequency as the previous time, and the processing efficiency can be improved accordingly.

In the first to third inventions, the receiving target stations and their order set in the selection order storage means may be configured to be settable by a user.
In the fourth to sixth inventions, the frequency set in the selection order storage means and the order thereof may be configured to be settable by a user.

局 As described above, the target station and frequency of the standard radio wave are changed during a business trip or travel. Therefore, if each user can set the receiving station and the order of the frequency according to his / her business trip pattern, the standard radio wave can be efficiently received.

In the first to third inventions, the receiving target stations and their order set in the selection order storage means may be set based on past receiving history.
In the fourth to sixth inventions, the frequencies set in the selection order storage means and the order thereof may be set based on a past reception history.

(4) If the order of receiving stations and frequencies is set in descending order of the number of receptions in the past, it is possible to set according to the business trip pattern of each user and the like, and the standard radio wave can be received efficiently.

In the first to third inventions, the target stations set in the selection order storage means and their order may be set in the order of the target stations that are closer in distance from the first target station.

変 更 It is highly likely that the change of the target station will be close in terms of distance. For example, the eastern Japan standard radio wave is normally received, and if the eastern Japan standard radio wave cannot be received, there is a high possibility that the west Japan standard radio wave can be received. Similarly, when the reception of the standard radio wave of Germany is stopped but the reception of the standard radio wave of Germany is short, there is a high possibility that the radio wave of the UK can be received. Therefore, if the setting order is set in the order of the distance, if the first signal cannot be received, there is a high possibility that the second and third signals can be received immediately, and radio waves can be received efficiently.

In the fourth to sixth inventions, the order of the frequencies stored in the selection order storage means is set in the order of increasing the number of standard radio wave output stations of the frequencies other than the first frequency. May be.

If the number of output stations (reception target stations) that output that frequency is large, the probability of successful radio wave reception at that frequency is also high, and if reception is not possible at the first frequency, it can be immediately received at the second or third frequency. It is highly likely that radio waves can be received efficiently.

Here, in each invention, it is preferable to include a display means for displaying a receiving target station that has successfully received the standard time signal.
If such a display means is provided, the user can easily grasp which station (country) is currently displaying the time, and the convenience can be improved. Even if there is no display means, usually, the time of the country is correctly displayed by referring to other clocks in the airport or the town, or by the timing of the sun position, sunset, sunrise, etc. Can be determined.

A first control method for a radio-controlled timepiece according to the present invention is a method for controlling a first reception target station from among standard radio wave output stations that output various standard radio waves having at least one of different frequency and time information formats. A first station receiving step of receiving the standard radio wave, and, when the standard radio wave reception fails in the first station receiving step, either succeeds in the standard radio wave reception or selects all the previously prepared reception target stations. Until the end, the other station receiving step of sequentially receiving the standard radio waves of the other receiving stations in a preset order, and, when the standard radio wave is successfully received in the other station receiving step, the receiving station is designated as the first station. A first station setting step for setting the reception target station, and, when the standard radio wave is successfully received in the first station reception step or the other station reception step, the current time of the clock means for displaying the time is set to the time of the standard radio wave. Correct based on information A time correction step that is characterized in that comprises a.

In the second control method, a standard radio wave of a preset first receiving target station is received from among standard radio wave output stations that output various standard radio waves having at least one of different frequency and time information formats. The first station receiving step, and when the standard radio wave reception fails in the first receiving step, the standard radio waves of the other receiving target stations are sequentially received in a preset order, so that the radio wave receiving condition is the best. The optimum station detecting step for detecting the optimum receiving target station, the optimum station receiving step for receiving the standard radio wave of the receiving target station detected in the optimum station detecting step, and the standard radio wave was successfully received in the optimum station receiving step At this time, a time is displayed when a standard radio wave is successfully received in the first station setting step of setting the receiving target station as the first receiving target station and the first station receiving step or the optimum station receiving step. Before the current time of the timing means A time correction step of correcting, based on the standard radio wave time information and is characterized in that it comprises.

Further, in the third control method, a standard radio wave of a preset first reception target station is received from among standard radio wave output stations that output various standard radio waves different in at least one of a frequency and a time information format. A first station receiving step, an optimal station detecting step of sequentially receiving standard radio waves of other target stations in a preset order to detect a target station having the best radio wave receiving conditions, and an optimal station detecting step. A first station setting step of setting the receiving target station as the first receiving target station if the receiving condition of the receiving target station detected in the step is better than that of the first receiving target station; And a time correction step of correcting the current time of the clock means for displaying time based on the time information of the standard radio wave when the reception of the standard radio wave is successful in the step.

According to the control methods of the first to third radio-controlled timepieces, the same functions and effects as those of the first to third inventions can be obtained.

As described above, according to the radio-controlled timepiece and the method of controlling the same according to the present invention, it is possible to receive the standard radio waves of different types and automatically correct the time in each region, and perform the receiving operation efficiently to save energy. And operability can be improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 is a front view of a radio-controlled timepiece 1 according to the first embodiment. The radio-controlled timepiece 1 is a pointer-type timepiece (analog timepiece) provided with an hour hand 2, a minute hand 3, and a second hand (not shown). The dial 5 of the timepiece 1 is provided with an area indicator 8 comprising a scale 6 indicating a selectable reception target station and a pointer 7 pointing to the scale 6 to indicate the currently selected reception target station. Has been.

FIG. 2 shows a circuit configuration of the radio-controlled timepiece 1.
The radio-controlled timepiece 1 includes an antenna 21 for receiving a long-wave standard radio wave on which time information is superimposed, a receiving circuit 22 as a receiving means for processing the long-wave standard radio wave received by the antenna 21 and outputting the processed time information (time code). A data storage circuit 23 for storing the time information output from the receiving circuit 22, a control circuit 24, a motor drive circuit 25 for controlling the driving of a stepping motor for driving the hands 2 and 3, and the hands of the hands 2 and 3. A hand position detecting circuit 26 for detecting a position and a battery 27 as a power supply for driving each circuit are provided.

The antenna 21 is constituted by a ferrite antenna or the like in which a coil is wound around a ferrite rod.
The receiving circuit 22 includes a tuning circuit 221 including a tuning capacitor or the like, and is configured to receive a radio wave of a frequency set by the tuning circuit 221 via the antenna 21. The receiving circuit 22 includes an amplifying circuit, a band-pass filter, a demodulating circuit, a decoding circuit, and the like (not shown). The receiving circuit 22 extracts time information (time code) composed of digital data from a received radio wave and stores the time information in the data storage circuit 23.

Here, the time information (time code) is configured in accordance with a predetermined time information format (time code format) for each country.
That is, in the time code format of the Japanese standard radio wave (JJY) shown in FIG. 3, one signal is transmitted every one second, and one record is formed in 60 seconds. That is, one frame is 60-bit data. The data items include the minute and hour of the current time, the total day from January 1 of the current year, the year (last two digits of the Christian era), the day of the week, and “leap second”. The value of each item is constituted by a combination of numerical values assigned for each second, and ON / OFF of this combination is determined from the type of signal. In FIG. 3, “M” indicates a marker corresponding to the minute (0 second per minute), and “P1 to P5” indicate position markers, the positions of which are determined in advance. Signal. Note that the signal indicating the marker is a signal having a pulse width of about 0.2 ms. In each item, a signal representing ON (binary 1) is a signal having a pulse width of about 0.5 ms, and OFF (binary 0). ) Is a signal having a pulse width of about 0.8 ms.
Note that, in Japan, long-wave standard radio waves (JJY) are transmitted at 40 kHz (East Japan) and 60 kHz (West Japan) as described in the Background Art, but the time code format of each radio wave is the same.

On the other hand, in the time code format of the German standard radio wave (DCF77) shown in FIG. 4, data items of minute, hour, day, day of the week, month, and year are set. Further, no data exists until the 15th second, and therefore, the positions of the position markers P1, P2, P3 and the marker M are also different from JJY in FIG. Furthermore, before each time item, "R: use of spare antenna", "A1: notice of change of normal time and daylight saving time", "Z1, Z2: display of normal time and daylight saving time", "A2: display of leap second" , “S: start bit of time code” and the like are set.

In the time code format of the British standard radio wave (MSF) shown in FIG. 5, data items of year, month, day, day of the week, hour, minute, and minute synchronization code are set. Further, no data exists until the 17th second, and the presence / absence and position of each position marker P and marker M are different from those of JJY and DCF77 in FIGS.
Although not shown, the time code format of the U.S. standard radio wave (WWVB) is also different from that of other countries, and the format (data) of the received time information (time code) allows the standard radio wave to be output to any output station. Can be determined.

The time information stored in the data storage circuit 23 is processed by the control circuit 24. The configuration of the control circuit 24 is shown in the circuit diagram of FIG.
The control circuit 24 includes an oscillation circuit 51, a frequency dividing circuit 52, a time counter 53, a comparing circuit 54, a time correction control unit 55, a received radio wave determining unit 56, a received frequency switching unit 57, a receiving selecting unit 60, and a selecting order storing unit 70. , Receiving station information storage means 80.

The oscillation circuit 51 oscillates a reference oscillation source 50 such as a crystal oscillator at a high frequency, and the frequency dividing circuit 52 divides the frequency of the oscillation signal and outputs it as a predetermined reference signal (for example, a 1 Hz signal). The time counter 53 counts the reference signal and counts the current time. Therefore, these circuits 51 and 52 and the counter 53 constitute the time measuring means of the present invention. Each time the counter 53 counts up by one, a drive signal is output to the motor drive circuit 25 to drive the display unit 28 including the hands 2 and 3 and the stepping motor.
The positions of the hands 2 and 3 are detected by the hand position detection circuit 26 and output to the comparison circuit 54.

The reception selection means 60 selects a standard radio wave output station set as a first reception target station in the selection order storage means 70 and instructs reception of a standard radio wave, and a first reception station selection reception unit 61; A receiving station sequential selection receiving section 62 for sequentially selecting the receiving target stations in accordance with the selection order stored in the selection order storage means 70 and performing a receiving operation when the standard reception station cannot receive the standard time signal. ing.
The reception selection means 60 instructs the activation of the reception circuit 22 and the switching of the reception frequency by controlling the tuning circuit 221 via the reception frequency switching means 57 so that the standard radio wave of the selected reception target station can be received. .

The selection order storage means 70 stores the order in which the reception selection means 60 selects each receiving target station. In the present embodiment, three types of order are set as the storage method of the selection order.
That is, the selection order storage unit 70 is set with three types of storage units: a user setting order storage unit 71, a distance order storage unit 72, and a history order storage unit 73.

As shown in FIG. 7, the user setting order storage unit 71 stores reception target stations and their setting order in response to user setting inputs. In the example of FIG. 7, the first receiving target station is set to East Japan, the second is set to West Japan, the third is set to the United States, the fourth is set to the United Kingdom, and the fifth is set to Germany. These orders are usually set by the user according to his / her own behavior pattern and the like.

As shown in FIG. 8, the order according to the distance between countries is mainly set in the distance order storage unit 72. This setting order is set in consideration of not only the geographical distance but also the moving distance, the moving time (distance from a temporal point of view), and the like. Specifically, the setting order of each reception target station when each reception target station is set as a starting point is stored. This data is set in advance as an initial value, but the data can be changed by the user.

As shown in FIG. 9, the target stations are set in the history order storage unit 73 in the order of the reception history of the standard radio wave, specifically, in descending order of the number of receptions. For example, in the example of FIG. 9, the first is set to West Japan, which has received the previous radio wave, and the second and lower are arranged as “East Japan, USA, Germany, UK” in descending order of the number of receptions.

The reception selecting means 60 is configured to select a reception target station based on the data (order) of the storage units 71 to 73 selected by the user among the storage units 71 to 73.
When the distance order storage unit 72 is selected, it is necessary to further specify which receiving target station is to be the starting point (first station). This specification may be specified by the user, but usually, the previous target station is the first station.

Here, in the present embodiment, three types of order (storage units 71 to 73) are configured to be selectable. However, it is configured such that any one or only two can be selected and set. Is also good.
In the following description of the present embodiment, a case where the distance order storage unit 72 is selected and East Japan (JJY, 40 kHz) is selected as the originating station will be described as an example.

As shown in FIG. 10, the receiving station information storage means 80 stores at least the frequency of the standard radio wave at each receiving station and the code format of its time information.

Next, the operation of the radio-controlled timepiece 1 having such a configuration will be described.
The radio-controlled timepiece 1 automatically receives standard radio waves at predetermined intervals, for example, once a day, based on schedule setting information (not shown). In addition, the user can manually perform forced reception by operating an external operation member such as a crown.

The operation of receiving the standard radio wave is executed based on the flowchart shown in FIG. That is, when the receiving operation is started, the variable n indicating the selection order is set to the initial value 1 (step 1, hereinafter, step is abbreviated as “S”). Subsequently, the first receiving station selection receiving unit 61 of the receiving selecting unit 60 is operated, and the first receiving target station stored in the distance order storing unit 72 of the selection order storing unit 70, that is, the eastern Japan is selected. Then, the reception processing of the standard radio wave is executed (S2).
Specifically, the first receiving station selection receiving section 61 of the receiving selecting section 60 operates the receiving circuit 22 and stores the frequency information of the standard radio wave corresponding to the selected receiving target station in the receiving target station information storage section 80. , And controls the tuning circuit 221 via the reception frequency switching means 57 based on the frequency information to switch the reception frequency and execute radio wave reception.

Then, the first receiving station selection receiving unit 61 determines whether the standard radio wave of the first receiving target station has been successfully received (S3). Specifically, first, the electric field strength and the reception sensitivity of the radio wave are detected in the reception circuit 22, and the first reception station selection / reception unit 61 determines whether the radio wave of a predetermined level or more is received based on the detection result. When a radio wave of a predetermined level or more is received, the time information is stored in the data storage circuit 23. Therefore, the received radio wave determination means 56 converts the time information into the time code format of the first receiving target station. It is determined whether they match and whether the time information is correct data, and the result is also notified to the first receiving station selection receiving unit 61.
Whether the data is correct may be determined by, for example, determining whether or not a plurality of continuous frames (one minute of data) represent the time of one minute, as in the data determination of a normal radio-controlled timepiece.
Here, it is determined that the radio wave reception has succeeded (reception OK) only when it is determined that the radio wave reception conforms to the predetermined format and indicates the correct time (S3). In other cases, radio wave reception at a predetermined level or higher is performed. If there is no data, if the radio wave is received but the data is different from the time code format of the first receiving target station, or if the format is correct but the time information actually received is incorrect, It is determined as failure (reception failure) (S3).

If the radio wave reception is successful in the first receiving target station, the reception selecting means 60 stops the receiving circuit 22 to end the receiving operation, and the time correction processing by the time correction control unit 55 as the time correction means (S10). ).

On the other hand, if the reception has failed, the reception selecting means 60 operates the receiving station sequential selection receiving section 62. Specifically, 1 is added to the variable n to make “n = 2” (S4), and since “n> 5”, that is, in this embodiment, only five receiving target stations are set, It is determined whether the selection order is 5 or less (S5).
Then, if n is 5 or less, the receiving station sequential selection receiving section 62 is operated to select the n-th receiving target station (if n = 2, the second receiving target station) and to receive the standard radio wave. The process is performed in the same manner as in the first receiving target station (S6).

Next, it is determined whether the reception at the n-th reception target station is successful (S7). This determination method is the same as the determination processing (S3) in the first receiving target station. If the reception has failed, the processes in S4 to S7 are repeated until the reception is successful. That is, the selection of the third to fifth reception target stations and the radio wave reception processing are repeated.
Then, when the radio wave reception is successful in any of the second to fifth receiving target stations (S7), the receiving target station that succeeds in the reception is set as the first receiving target station (S8). When the distance order storage section 72 is used, the data of the reception target station starting point is selected.

Then, the reception selection means 60 sets the display of the area indicator 8 to the updated first reception target station by setting the pointer 7 to the scale 6 of the first reception target station (S9).
Further, a time correction process is performed based on the time information of the received radio wave (S10). The time adjustment process may be performed in the same manner as a normal radio-controlled timepiece. For example, the comparison circuit 54 compares the time information determined to be correct by the received radio wave determination means 56 with the current hand position information, and outputs a pulse corresponding to the difference from the time correction control section 55 to output the time counter 53 Can be adjusted by changing the values of the hands and the positions of the hands 2 and 3 on the display unit 28 by the motor drive circuit 25.

If it is determined in step S5 that "n>5", the standard radio wave could not be received even if the first to fifth receiving stations were sequentially switched. The receiving process is terminated without updating the data. In this case, the reception processing may be performed again after a preset time, for example, two hours, or the reception based on the regular schedule may be skipped once and the next regular reception time (for example, one day later) The reception may be performed.
The above processing is executed at the time of the periodic reception processing automatically performed and at the time of the manual reception processing by the user operating the crown or the like.

When the user setting order storage unit 71 is selected in the selection order storage unit 70, the processing may be performed in the set order. In this case, when the first receiving target station is changed to the actually receiving target station (S8), the first receiving target station and the subsequent stations may be sequentially moved down.
In addition, even when the history order storage unit 73 is selected, the processing may be performed in the set order. In this case, when the first receiving target station is changed to the actually receiving target station (S8), the second to fifth receiving target stations may be arranged in descending order of the number of receptions. On the other hand, when the history order storage unit 73 is selected, the first reception target station is not immediately changed to the target station that has actually received radio waves, but the number of receptions including the reception is updated. , May be arranged in descending order of the number of times. In other words, in the example of FIG. 9, even if the United States is received, the number of receptions is still larger in East Japan, so the display of the area indicator 8 is switched to the received United States (US). The station that first receives radio waves may be left in East Japan.

According to the first embodiment, the following effects can be obtained.
(1) During the reception processing of the standard radio wave, the first receiving station selection receiving section 61 of the reception selecting means 60 selects the first receiving target station set in the selection order storage means 70 and receives the radio wave. At this time, only when the correct radio wave reception cannot be performed, the other receiving target stations are selected and received by the receiving station sequential selection receiving unit 62, so that it is necessary to perform the receiving processing of all the receiving target stations as in the related art. Energy consumption can be minimized, and energy saving can be achieved.
In particular, also at the time of selecting another receiving target station by the receiving station sequential selection receiving unit 62, first, the second receiving target station is selected and reception of its standard wave is attempted, and the second receiving target station performs radio wave reception. Only when unsuccessful, the third reception target station is selected and the reception of the standard radio wave is attempted, so that only when the reception fails, another reception target station is sequentially selected, so that the radio wave reception is successful. , The number of receptions can be reduced, and further energy saving can be achieved.

(2) The first station to be received is set to the station that has succeeded in the previous reception, and in normal use, there is a high possibility that the receiving station will be able to receive the standard time signal again. Since the radio wave is successfully received by the second receiving target station, the radio wave receiving process can be performed in a short time, and the current consumption can be reduced accordingly.

(3) The user can appropriately select the order of selection of other reception target stations by the reception station sequential selection reception unit 62 from the three types of storage units 71 to 73 in which different settings are set. Each receiving target station can be selected in the order according to the user of the watch 1, and even if the first radio wave reception fails, there is a high possibility that the radio wave can be received as early as the second or third radio wave. Can be reduced.

(4) In addition, if the user setting order storage unit 71 is used, the selection order can be set according to the behavior pattern of the user of the timepiece 1, and the standard radio wave can be efficiently received.

(5) Also, since the movement of the user is more likely to occur when the distance is short, if the setting order is set in the order of short distance using the distance order storage unit 72, the first reception cannot be performed. Even in this case, there is a high possibility that the signal can be received immediately at the second or third position, and the radio wave can be received efficiently. Further, since data is set in the distance order storage section 72 by initial setting, the distance order storage section 72 can be easily used without the user inputting data as in the user setting order storage section 71.
If the distance order storage unit 72 is selected as the initial mode and a predetermined starting point (for example, "East Japan") is set therein, the forced reception is performed even when the radio-controlled timepiece 1 is used for the first time. If this operation is performed, this function can be used. Therefore, radio wave reception can be executed with a very simple operation, and the first reception target station can be set.

(6) Furthermore, if the history order storage unit 73 is used, the selection order can be automatically set in accordance with the behavior pattern of the user of the timepiece 1, so that the standard radio wave can be received efficiently. In addition, unlike the case where the user setting order storage unit 71 is used, the user does not need to perform data input operation, so that it can be used very easily.

(7) According to the present embodiment, the selection of the receiving target station is automatically performed, so that the user needs to determine the receiving target station and determine which radio wave of the receiving target station has good reception conditions. And the convenience can be improved. Particularly in Japan, both radio waves can be received in the middle area (Kyoto) of each target station in the east and west, but which radio wave is more suitable for reception depends on where the clock is located (mountain and building It is difficult to judge because it depends on which side it is on. However, in the present embodiment, since the receiving target station is automatically selected, there is no need for the user to make a special decision, the user can easily use and install the mobile station, and can move with the user like a wristwatch. Also, since the optimum station at the moving location is automatically selected, the radio wave can be reliably received and the time can be set.

(8) Since the local indicator 8 is provided to display the target station that has received the standard radio wave, the user can easily grasp which station (country) the displayed time is, which is convenient. Can be enhanced.

[Second embodiment]
Next, a radio-controlled timepiece 1 according to a second embodiment will be described with reference to FIGS.
In the following embodiments, the same or similar components as those in the above-described embodiments are denoted by the same reference numerals, and description thereof will be omitted or simplified.
This embodiment is different from the first embodiment in that an optimum station detection unit 63 and an optimum station selection reception unit 64 are provided instead of the reception station sequential selection reception unit 62 of the reception selection unit 60, The difference is that only the first station and the other station search order storage section 75 are provided in the selection order storage means 70 according to the above. The other configuration is the same as that of the first embodiment, and the description is omitted. I do.

As shown in FIG. 13, the first station and other station search order storage unit 75 stores the station (East Japan in FIG. 13) set as the first reception target station and the search order of other reception target stations (setting order 2). Number).
The optimum station detecting section 63 searches for a target station according to the search order. That is, the radio wave of each station is received for a short time, and the reception conditions such as the electric field strength and the reception sensitivity of the radio wave are obtained, and the station having the best condition is detected. At this time, since only the reception condition of the radio wave needs to be obtained, it is not necessary to separately search the stations having the same frequency. For this reason, in the first station and other station search order storage unit 75, the receiving target stations having the same reception frequency are set in the same order. In addition, the order for each frequency may be set based on the user setting, the reception history, and the order of frequencies closer to the frequency of the first reception target station as in the first embodiment. They are set in descending order of the number of receiving target stations corresponding to each frequency.
The optimal station selection receiving section 64 selects a station (frequency) that has been optimized by the optimal station detecting section 63 and receives a radio wave.

The receiving process in the second embodiment will be described with reference to the flowchart of FIG.
As in the first embodiment, when the reception processing is started periodically or manually, the first reception station selection reception unit 61 of the reception selection unit 60 is driven, and the first station and the first station of the selection order storage unit 70 are driven. The first reception target station stored in the other station search order storage unit 75, that is, East Japan, is selected, and the reception processing of the standard radio wave is executed (S21). The specific receiving process is the same as in the first embodiment.

Then, it is determined whether or not the standard radio wave of the first receiving target station has been received in the same manner as in the first embodiment (S22).
Here, when it is determined that the radio wave reception is successful (reception OK) (S3), a time correction process (S28) is executed.
On the other hand, if the reception has failed, the reception selecting means 60 activates the optimum station detection unit 63. The optimal station detection unit 63 receives radio waves of stations other than the first reception target station for a short time, and detects optimal reception conditions (S23).

More specifically, the optimum station detecting unit 63 first switches to the reception frequency (60 kHz) of West Japan set to the second rank via the reception frequency switching unit 57 to perform radio wave reception, and performs the electric field strength and reception at that time. Receiving condition information such as sensitivity is received from the receiving circuit 22 and stored.
Next, the reception condition information is obtained by switching to a German reception frequency (77.5 kHz) which is a reception frequency other than 60 kHz.
In the present embodiment, other radio waves of different frequencies are not set, but if they are set, the reception conditions are obtained by sequentially switching the frequency.
In the case where there is a station other than the first receiving target station having the same frequency as the first receiving target station, it may receive the signal again at that frequency, or may perform the first receiving without performing the receiving processing again. The receiving condition at the time of performing the receiving process (S21) at the receiving station may be used as it is.
Then, the optimum station detecting unit 63 detects a station (frequency) having the optimum receiving condition among them, and notifies the optimum station selecting / receiving unit 64 (S23).

The optimum station selection receiving unit 64 selects a station (frequency) under the detected optimum receiving condition, and performs a radio wave receiving process again at the received frequency (S24). Then, it is determined whether or not the radio wave reception at the frequency (the optimal receiving station) is successful (S25).
At this time, similarly to the first embodiment, it is determined whether the time code format or the data of the received data is correct. However, the processing is performed as follows, for example. That is, when there is only one station that outputs the radio wave of the reception frequency, the determination may be made using the format of the station. On the other hand, when there are a plurality of stations such as 60 kHz, as described above, since the time code formats of the respective stations are different from each other, it is determined which station format is based on the received time information. What is necessary is just to determine based on a format.

If the radio wave has been successfully received by the optimal receiving station (S25), the receiving target station that has successfully received the radio wave is set as the first receiving target station (S26).
Then, the reception selecting means 60 sets the display of the area indicator 8 to the updated first reception target station by setting the pointer 7 to the scale 6 of the first reception target station (S27). Further, a time correction process is performed based on the time information of the received radio wave (S28). Note that the method of the time adjustment process is the same as that of the first embodiment, and thus the description is omitted.

On the other hand, if the radio wave reception fails even at the optimal receiving station (S25), the receiving process ends without performing time correction or updating the first receiving target station. Also in this case, the reception processing may be performed again after a preset time, for example, two hours, or the reception based on the regular schedule may be skipped once and the next regular reception time (for example, one day later) It is sufficient to perform reception.
Each of the above processes S21 to S28 is executed at the time of the radio wave receiving operation.

In the second embodiment, the same operation and effect as (1), (2), (7), and (8) of the first embodiment can be obtained.
(9) Further, since the optimum station detecting section 63 detects a station (frequency) having a good radio wave reception condition and then performs radio wave reception, it is highly likely that radio wave reception will be successful, and the best reception condition is satisfied. Station can be detected in a short time. That is, if it is only for checking the reception condition, the reception can be performed in a very short time as compared with the reception of the time information. The receiving process can be performed in a very short time. Since only the target station having the best reception condition actually receives the time information, even if the radio wave reception process for confirming the reception condition is performed, the radio wave reception is generally completed in a short time. Can succeed. Therefore, unnecessary long-time receiving operation as in the related art can be eliminated, and the effect of reducing current consumption can be further increased.

(10) The optimum station detecting unit 63 can confirm the receiving condition in one reception for the receiving target station of the same frequency. Therefore, even if there are five receiving target stations, there are only three types of frequencies. It is sufficient to confirm the radio wave reception conditions of all the stations at most three times, and accordingly, the radio wave reception time can be reduced and the current consumption can be further reduced.

[Third embodiment]
Next, a radio-controlled timepiece 1 according to a third embodiment will be described with reference to FIGS.
The present embodiment differs from the second embodiment in that a first receiving station setting section 65 is provided instead of the optimal station receiving section of the reception selecting means 60, and as shown in FIG. The second embodiment is different from the second embodiment in the processing at the time of radio wave reception, and other configurations are the same as those of the second embodiment.

In the third embodiment, the standard radio wave is always received only at the first receiving target station, and the first receiving target station is set at regular intervals such as when the number of receptions at the first receiving target station is performed a set number of times. Is to select an optimal station for setting.
Therefore, the first station and other station search order storage unit 75 of the selection order storage unit 70 is the same as in the second embodiment.
The first receiving station selection receiving section 61 and the optimum station detecting section 63 in the receiving selecting means 60 are the same as those in the second embodiment, and a first receiving station setting section 65 is additionally provided. Other configurations are the same as those of the above embodiments.

A receiving process in the third embodiment having such a configuration will be described with reference to the flowchart of FIG.
As in the second embodiment, when the reception process is started periodically or manually, the first reception station selection reception unit 61 of the reception selection unit 60 is driven, and the first station and the other stations in the selection order storage unit 70 are driven. The first reception target station stored in the station search order storage unit 75, that is, East Japan, is selected, and the reception processing of the standard radio wave is executed (S31). The specific receiving process is the same as in the second embodiment.

Then, it is determined whether or not the standard radio wave of the first receiving target station has been received similarly to the first embodiment (S32).
Here, when it is determined that the radio wave reception is successful (reception OK) (S32), time correction processing (S33) is executed, and the display of the area indicator 8 is set to the receiving station (first receiving target station) ( S34). Normally, reception at the same first reception target station continues, so that the actual instruction of the indicator 8 is not actually changed unless the processing by the first station setting unit 68 described later is performed.

後 After the process, or when it is determined that the reception has failed in S32, it is determined whether the number of times of execution of reception at the first receiving target station has been performed a specified number of times (S35). For example, when reception is performed once a day and the specified number of times is set to five (five days), the following processing is performed every five days.

If it is determined in S35 that the operation has been performed the specified number of times, the optimum station detection unit 63 is operated, and similarly to the second embodiment, radio waves of stations other than the first reception target station are received for a short time, and the optimum reception is performed. The station (frequency) of the condition is detected (S36).

Then, the first receiving station setting unit 65 determines whether any of the receiving conditions for each frequency has better receiving conditions than the first receiving station (S37).
If there is one having good reception conditions, the receiving station with the optimum condition is set as the first receiving target station in the first station and other station search order storage unit 75 (S38).
Therefore, in the next radio wave reception processing, a station newly set as the first reception target station is selected and the reception processing is executed (S31). Then, at this time, if the reception is successful, a time adjustment process (S33) is performed, and the area indicator is changed to the first reception target station (S34).
If the number of times has not reached the specified number in S35, or if there is no station with good reception conditions in S37, the first reception target station is not changed.
The above processes S31 to S35 are respectively performed at the time of the radio wave reception operation, and S36 to S38 are performed at fixed time intervals (for example, every five days).

In the third embodiment, the same operation and effect as (1), (2), (7), (8), and (10) of each of the above embodiments can be obtained.
(11) Further, since the optimum station detecting section 63 periodically detects a station (frequency) having a good radio wave receiving condition and updates the first receiving target station to a station having the optimum condition, a more reliable time can be obtained. Information can be easily obtained. That is, in the first and second embodiments, when radio wave reception is successful at the first receiving target station, the first receiving target station is not changed. For this reason, although the probability is low, if there is a similar error in the received time information and it happens to be time information of one minute interval, if it is determined that the reception is successful, an accurate time cannot be obtained. there is a possibility. Such a state is particularly likely to occur when a weak radio wave is being received. In other words, since the S / N ratio of a weak radio wave is reduced or the signal margin for the dive noise is reduced, the error rate of the acquired time information is lower when a weak radio wave is received than when a strong radio wave is received. It is because it becomes high. Therefore, even if the radio wave is successfully received, if a stronger radio wave can be received, it is preferable to receive the radio wave. Then, in the present embodiment, even if the weak radio wave is successfully received at the first receiving target station, the optimum receiving target station is periodically detected and the first station is updated. Radio waves can be received, the probability of reception can be improved, the error rate can be reduced, and accurate time information can be reliably obtained.

(12) Further, since the detection of the optimum station and the setting of the first receiving station are not performed at every reception, but are performed at several times of reception, current consumption can be further reduced. it can.

[Fourth embodiment]
Next, a radio-controlled timepiece 1 according to a fourth embodiment will be described with reference to FIGS.
This embodiment is significantly different from the first embodiment in that selection is performed in units of reception target stations, whereas selection is performed in units of frequency of standard radio waves. In other words, some of the receiving target stations output radio waves of the same frequency, and even radio waves of the same frequency have different time code formats, so that each station can be identified based on the received time information. Paying attention, the receiving process itself is performed in units of frequency.

For this reason, the reception selection means 60 of the present embodiment includes a first frequency selection reception section 161 corresponding to the first reception station selection reception section 61 of the first embodiment and a frequency sequential reception section 161 corresponding to the reception station sequential selection reception section 62. A selection receiving unit 162 is provided.
The selection order storage unit 70 includes a user setting order storage unit 171, a frequency order storage unit 172, a history order storage unit 173, and a reception target station number order storage unit 174.

The user-set order storage unit 171, the order-by-frequency storage unit 172, the history order storage unit 173, and the number-of-received-stations order storage unit 174 are arranged in such a manner that the respective reception-target stations are grouped by frequency and the order is set. This is different from the first embodiment.
That is, in the user setting order storage unit 171, as shown in FIG. 18, the user sets the setting order for each reception frequency. In the example of FIG. 18, a frequency of 40 kHz (East Japan) is set as the first, a frequency of 60 kHz (West Japan, the United States and the United Kingdom) is set as the second, and a frequency of 77.5 kHz (Germany) is set as the third.
In the frequency-based order storage unit 172, the second and subsequent orders are set in the order of the frequency closest to the frequency currently set as the first (starting point), that is, the frequency with the smaller difference from the starting frequency. That is, in the example of FIG. 19, when 40 kHz (East Japan) is the first, the frequency is set in the order of 60 kHz and 77.5 kHz. Similarly, when 60 kHz is set as the first (starting point) and when 77.5 kHz is set as the first (starting point), they are set in the order shown in FIG.

As shown in FIG. 20, the history order storage unit 173 obtains the number of receptions for each frequency, and arranges them in the order of the number of receptions.
The number-of-received-stations order storage section 174 arranges the number of target stations for each frequency in descending order. This is because if the number of receiving stations is large, the possibility of receiving radio waves when receiving at that frequency increases.

The receiving process in the fourth embodiment will be described based on the flowcharts of FIGS.
As in the first embodiment, when the reception process is started periodically or manually, a variable n indicating the selection order is set to an initial value 1 (S41). Next, the first frequency selection receiving unit 161 selects the first frequency from any one of the pre-selected storage units 171 to 174, and tunes through the reception frequency switching unit 57 based on the selected frequency. The circuit 221 is controlled to execute radio wave reception (S42). Here, the reception circuit 22 determines whether a predetermined reception condition such as electric field strength is satisfied (S43). If a radio wave that satisfies the reception condition has been successfully received, the received radio wave determination means 56 determines that the radio wave is received. It is determined which receiving target station the received time information is and whether the received time information is correct (S44).
At this time, since the frequency is specified, the received radio wave determining means 56 can determine which radio wave is transmitted by comparing the received information with the time code format of the receiving target station that outputs the radio wave of that frequency. Whether or not the reception time is accurate may be determined by receiving data of a plurality of frames as in the first embodiment.
Here, if accurate time information can be received, it is determined that reception is OK (S45), the area indicator is changed to the receiving target station (S46), and the same time correction processing as in each embodiment is performed (S47).

On the other hand, when the reception condition of the radio wave is bad in S43 or when it is determined that the reception is NG in S45, the frequency sequential selection receiving unit 162 is executed, and the frequency sequential selection reception process (S50) is performed.
In the frequency sequential selection reception process, as shown in FIG. 23, first, 1 is added to the variable n to make “n = 2” (S51), and whether “n> 3” is satisfied, that is, in this embodiment, the reception frequency Since only three types are set, it is determined whether the selection order is 3 or less (S52).
Then, if n is 3 or less, the frequency sequential selection receiving section 162 selects the n-th frequency (the second frequency if n = 2) from the selection order storage means 70, and receives the standard radio wave in the first order. It is executed in the same manner as in the case of the frequency (S53).

Next, it is determined whether a predetermined reception condition is satisfied at the n-th frequency (S54). Here, if the reception condition is not satisfied, the processing of S51 to S54 is repeated until the condition is satisfied or n> 3. That is, the selection of the third frequency and the radio wave reception processing are repeated.
Then, if a predetermined receiving condition is satisfied at any of the second to third frequencies (S54), the received radio wave determining means 56 determines which receiving target station the radio wave belongs to and that the received time information is correct. Is determined (S55). The process here is the same as S44.
Here, if accurate time information can be received, it is determined that reception is OK (S56), the receiving target station of the detected radio wave is set as the first receiving target station (S57), and the display of the area indicator 8 is displayed on the receiving station (first terminal). (S59), and the time is adjusted (S59).
On the other hand, if it is determined in S56 that the reception has failed, the process returns to S51 to repeat the process.

In such a fourth embodiment, the same operation and effects as (1) to (4) and (6) to (8) of the first embodiment can be obtained.
(13) Further, since the radio wave reception is switched by selecting the frequency, the reception of the radio wave of all the stations can be performed as compared with the first embodiment in which the reception target station is selected and performed similarly to the effect (10). Even when the conditions are confirmed, the number of receptions can be reduced, and the radio wave reception time can be shortened accordingly, and the current consumption can be further reduced.
(14) In contrast to the first embodiment, when there are a plurality of receiving target stations of the same frequency, it is necessary to determine which receiving target station the received radio wave is. Since the format of the information data is confirmed, software-based processing is sufficient, the determination can be performed in a very short time, and the burden on the timepiece 1 does not increase. In particular, in order to convert the actually received time information into time data to be used for time correction, it is necessary to perform analysis based on the format. The number of receptions can be reduced without increasing the number of receptions, so that energy saving can be promoted and the duration of the timepiece 1 can be prolonged.

Note that the present invention is not limited to each embodiment, and modifications, improvements, etc. within a range that can achieve the object of the present invention are included in the present invention.

For example, in the fourth embodiment, the selection of the receiving target station in the first embodiment is replaced by the frequency selection, but similarly, the selection of the receiving target station in the second and third embodiments is replaced by the frequency selection. Good.
That is, as shown in FIG. 24, the reception selection means 60 is provided with an optimum frequency detection unit 163 and an optimum frequency selection reception unit 164 in addition to the first frequency selection reception unit 161, so that radio waves cannot be received at the first frequency. In this case, the optimum frequency detecting unit 163 uses the first frequency & other frequency search order storage unit 175 to sequentially switch frequencies to detect the frequency at which the receiving condition is optimal, and the optimal frequency selection receiving unit 164 detects the frequency. The same control as in the second embodiment may be performed by performing selection and reception of.

Further, as shown in FIG. 25, in addition to the first frequency selection receiving section 161, the reception selecting means 60 is provided with an optimum frequency detecting section 163 and a first frequency setting section 165 so that radio waves cannot be received at the first frequency. In this case, the optimal frequency detecting unit 163 uses the first frequency & other frequency search order storing unit 175 to sequentially switch frequencies to detect a frequency at which the receiving condition is optimal, and determines that the receiving condition of the frequency is the first frequency. In a case better than the above case, the same control as in the third embodiment may be performed by updating the first frequency in the first frequency setting unit 165.
In each of these timepieces 1, the same functions and effects as those of the second and third embodiments can be obtained, and the functions and effects (13) and (14) of the fourth embodiment can also be obtained.
Note that the first frequency & other frequency search order storage unit 175 may be the same as the first station and other station search order storage unit 75 since the selection order may be set for each frequency.

As the radio-controlled timepiece of the present invention, a combination of the controls of the above embodiments may be used. For example, in addition to the control of the first and second embodiments, the detection of the optimum station executed at a predetermined interval of the third embodiment and the update of the first receiving target station based on the detection may be performed. Similarly, when selecting a frequency, in addition to the control shown in the fourth embodiment and FIG. 24, the detection of the optimum frequency in FIG. 25 and the update of the first frequency based on the detection may be performed. According to such a configuration, the operation and effect of each embodiment can be achieved.

The format of the area indicator 8 is not limited to the one using the pointer 7 as in the above-described embodiment, and a lamp indicating each area (a target station) is turned on, and the name of the receiving station is displayed using a liquid crystal display unit. For example, another format such as the above may be adopted. Furthermore, the area indicator 8 is not necessarily required, and it is not necessary to provide only a lamp indicating a radio wave reception state or to provide an indicator for displaying anything.

In the first and fourth embodiments, three or four storage units are provided in the selection order storage unit 70, but it is sufficient that at least one storage unit is provided. What is necessary is just to set suitably in implementation.

The circuits and means in the control circuit 24 are not limited to those constituted by hardware such as various logic elements, but a computer having a CPU (Central Processing Unit), a memory (storage device), etc. And a computer may be configured to incorporate predetermined programs and data (data stored in each storage unit) to realize each unit.
For example, a CPU and a memory are arranged in the radio-controlled timepiece 1 so as to function as a computer, and a predetermined control program and data are stored in the memory in communication means such as the Internet, a CD-ROM, a memory card, or the like. What is necessary is just to install via a medium, operate | move a CPU etc. by this installed program, and implement | achieve each means, such as the reception radio wave determination means 56 and the reception selection means 60.
In order to install a predetermined program or the like in the radio-controlled timepiece 1, a memory card, a CD-ROM, or the like may be directly inserted into the timepiece 1 or an external device that reads these storage media may be used. 1 may be connected. Furthermore, a program or the like may be supplied and installed by communication by connecting a LAN cable, a telephone line, or the like to the timepiece 1, or the program may be supplied and installed wirelessly because of the provision of the antenna 21. .

If the control program or the like provided by such a recording medium or communication means such as the Internet is incorporated in the radio-controlled timepiece 1, the functions of the inventions described above can be realized only by changing the program. The control program to be executed can be selected and incorporated. In this case, various radio-controlled timepieces 1 having different control formats can be manufactured only by changing the program, so that parts can be used in common and the like, and the manufacturing cost when developing variations can be greatly reduced.

The functions of the radio-controlled timepiece, that is, the respective components such as the timekeeping means, the receiving means, and the time correction means are not limited to those of the above-described embodiment, and each means of the conventionally known radio-controlled timepiece can be used.
In the above-described embodiment, five receiving target stations are configured to be selectable. However, the number of selectable receiving target stations and specific countries (regions) may be set as appropriate for implementation. In this case as well, since the contents of the selection order storage means 70 and the reception target station information storage means 80 only need to be rewritten, the user can easily set them.

The radio-controlled timepiece 1 of the present invention is not limited to an analog timepiece, but may be a digital timepiece or a timepiece having a pointer and a liquid crystal display. Further, the radio-controlled timepiece 1 can be applied to various timepieces such as a portable timepiece such as a wristwatch and a pocket watch, and a stationary timepiece such as a wall clock and a table clock.

[Other embodiments of the present invention]
The control method for a radio-controlled timepiece according to the first aspect is a method for controlling a radio-controlled timepiece according to the first aspect, wherein a preset first frequency is selected from among reception frequencies corresponding to standard radio wave output stations that output various standard radio waves having at least one of different frequency and time information formats. A first frequency receiving step of receiving a standard radio wave having a frequency of, and when the standard frequency reception fails in the first frequency receiving step, the standard radio wave is successfully received or all the prepared frequencies are selected. Until the completion of the above, the other frequency receiving step of sequentially receiving the standard radio waves of other frequencies in a preset order, and when the standard radio wave is successfully received in the other frequency receiving step, the frequency is set to the first frequency. When a standard frequency signal is successfully received in the first frequency setting step to be set and the first frequency receiving step or the other frequency receiving step, the current time of the clock means for displaying time is set to the standard time. A time correction step of correcting, based on the time information, characterized in that it comprises a.

The control method of the radio-controlled timepiece according to the second aspect is a method of controlling the radio-controlled timepiece according to the first aspect, wherein at least one of the frequency and the time information format outputs various standard radio waves, and each of the standard radio wave output stations outputs a standard radio wave. A first frequency receiving step of receiving a standard radio wave of a frequency of the first frequency, and when the standard radio wave fails to be received in the first frequency receiving step, the standard radio waves of other frequencies are sequentially received in a preset order. Optimum frequency detection step to detect the frequency with the best radio wave reception condition, optimum frequency reception step to receive the standard radio wave of the frequency detected in the optimum frequency detection step, and reception of the standard radio wave in the optimum frequency reception step If successful, a first frequency setting step of setting the frequency to the first frequency, and a standard frequency reception in the first frequency receiving step or the optimal frequency receiving step. Upon success, characterized by comprising a time correction step of correcting, based the current time of the clock means to time information of the standard radio to display time, a.

The control method of the radio-controlled timepiece according to the third aspect is characterized in that a first preset frequency is selected from among reception frequencies corresponding to standard radio wave output stations that output various standard radio waves having at least one of different frequency and time information formats. A first frequency receiving step of receiving a standard radio wave of a frequency of a predetermined frequency, and an optimum frequency detecting step of sequentially receiving standard radio waves of another frequency in a preset order to detect a frequency having the best radio wave receiving condition A first frequency setting step of setting the frequency to the first frequency when a reception condition of the frequency detected in the optimum frequency detection step is better than the first frequency; A time correction step of correcting the current time of the clock means for displaying time based on the time information of the standard radio wave when the reception of the radio wave is successful. .

A control program for a radio-controlled timepiece according to a fourth aspect is a radio-controlled timepiece comprising: a timekeeping means for inputting a reference signal from a reference signal source to time the current time; and a receiving means for receiving a standard timepiece including time information. A computer incorporated in the watch, receiving selection means for selecting a receiving target station from among standard radio wave output stations that output various standard radio waves different in at least one of a frequency and a time information format, and a receiving frequency of the receiving means. A reception frequency switching unit that switches to a frequency corresponding to the reception target station selected by the reception selection unit, a reception radio wave determination unit that determines whether the reception of the standard radio wave is successful, and that the reception of the standard radio wave is successful. Time determining means for correcting the current time of the time measuring means based on time information contained in the standard radio wave when the determination is made, and a selection order of the receiving target station A first receiving station selection receiving unit that functions as stored selection order storage means and selects the first reception target station stored in the selection order storage means to receive a radio wave; When it is determined that the radio wave reception by the first receiving station selection receiving unit has failed, the standard radio wave is successfully received according to the selection order stored in the selection order storage means, or all of the stored target stations are stored. Until the selection of is completed, the receiving station is sequentially selected to function as a receiving station sequential selection receiving unit for receiving radio waves.

A control program for a radio-controlled timepiece according to a fifth aspect is a radio-controlled timepiece comprising: a timekeeping means for inputting a reference signal from a reference signal source to time the current time; and a receiving means for receiving a standard timepiece including time information. A computer incorporated in the watch, receiving selection means for selecting a receiving target station from among standard radio wave output stations that output various standard radio waves different in at least one of a frequency and a time information format, and a receiving frequency of the receiving means. A reception frequency switching unit that switches to a frequency corresponding to the reception target station selected by the reception selection unit, a reception radio wave determination unit that determines whether the reception of the standard radio wave is successful, and that the reception of the standard radio wave is successful. Time determining means for correcting the current time of the time measuring means based on the time information included in the standard time signal when the determination is made; and And a first receiving station selection receiving unit that selects the first receiving target station stored in the selecting order storage unit and receives a radio wave, while functioning as a selection order storage unit in which is stored. When it is determined that the radio wave reception by the first receiving station selection receiving unit has failed, the standard radio waves of the receiving target stations other than the first receiving target station are sequentially received, and the radio wave receiving condition is the best. It is characterized by functioning as an optimal station detecting section for detecting a receiving target station and an optimal station selecting receiving section for selecting a receiving target station detected by the optimal station detecting section and receiving radio waves.

A control program for a radio-controlled timepiece according to a sixth aspect is a radio-controlled timepiece comprising: a timekeeping means for inputting a reference signal from a reference signal source to time the current time; and a receiving means for receiving a standard timepiece including time information. A computer incorporated in the watch, receiving selection means for selecting a receiving target station from among standard radio wave output stations that output various standard radio waves different in at least one of a frequency and a time information format, and a receiving frequency of the receiving means. A reception frequency switching unit that switches to a frequency corresponding to the reception target station selected by the reception selection unit, a reception radio wave determination unit that determines whether the reception of the standard radio wave is successful, and that the reception of the standard radio wave is successful. Time determining means for correcting the current time of the time measuring means based on the time information included in the standard time signal when the determination is made; and And a first receiving station selection receiving unit that selects the first receiving target station stored in the selecting order storage unit and receives a radio wave, while functioning as a selection order storage unit in which is stored. 1. An optimal station detecting unit for sequentially receiving standard radio waves of receiving target stations other than the first receiving target station and detecting a receiving target station having the best radio wave receiving conditions, and an optimal station detecting unit When the receiving condition of the receiving target station is better than that of the first receiving target station, the receiving target station is caused to function as a first receiving station setting unit for setting the receiving target station as the first receiving target station of the selection order storage means. It is characterized by.

A control program for a radio-controlled timepiece according to a seventh aspect is a radio-controlled timepiece comprising: a timekeeping means for inputting a reference signal from a reference signal source to time the current time; and a receiving means for receiving a standard radio wave including time information. Receiving selection means for selecting a reception frequency for receiving a standard radio wave of each standard radio wave output station which outputs various standard radio waves different in at least one of a frequency and a time information format from a computer incorporated in the watch; and Receiving frequency switching means for switching the receiving frequency to the frequency selected by the reception selecting means, received radio wave determining means for determining whether or not the standard radio wave has been successfully received, and it is determined that the standard radio wave has been successfully received. At this time, the time correction means for correcting the current time of the clock means based on the time information contained in the standard radio wave, and the selection order of the frequency are described. A first frequency selection receiving unit that selects the first frequency stored in the selection order storage unit and receives a radio wave, while functioning as the selected selection order storage unit. When it is determined that the reception of the radio wave by the reception unit has failed, the reception is performed until the reception of the standard radio wave succeeds or the selection of all the stored frequencies is completed according to the selection order stored in the selection order storage unit. It is characterized in that it functions as a frequency sequential selection receiving unit for sequentially selecting frequencies and receiving radio waves.

A control program for a radio-controlled timepiece according to an eighth aspect is a radio-controlled timepiece comprising: a time-measuring means for inputting a reference signal from a reference signal source to time the current time; and a receiving means for receiving a standard radio wave including time information. Receiving selection means for selecting a reception frequency for receiving a standard radio wave of each standard radio wave output station which outputs various standard radio waves different in at least one of a frequency and a time information format from a computer incorporated in the watch; and Receiving frequency switching means for switching the receiving frequency to the frequency selected by the reception selecting means, received radio wave determining means for determining whether or not the standard radio wave has been successfully received, and it is determined that the standard radio wave has been successfully received. At this time, the time correction means for correcting the current time of the clock means based on the time information contained in the standard radio wave, and the order of selecting the frequency are described. A first frequency selection receiving unit that selects the first frequency stored in the selection order storage unit and receives a radio wave, while functioning as the selected selection order storage unit. When it is determined that the reception of the radio wave by the reception unit has failed, the standard frequency reception unit sequentially performs reception of a standard radio wave having a frequency other than the first frequency, and an optimum frequency detection unit that detects a frequency having the best radio wave reception condition. It is characterized in that it functions as an optimum frequency selection receiving section that selects a frequency detected by the optimum frequency detecting section and receives a radio wave.

A control program for a radio-controlled timepiece according to a ninth aspect includes a time correction means for inputting a reference signal from a reference signal source to time the current time, and a reception means for receiving a standard radio wave including time information. Receiving selection means for selecting a reception frequency for receiving a standard radio wave of each standard radio wave output station which outputs various standard radio waves different in at least one of a frequency and a time information format from a computer incorporated in the watch; and Receiving frequency switching means for switching the receiving frequency to the frequency selected by the reception selecting means, received radio wave determining means for determining whether or not the standard radio wave has been successfully received, and it is determined that the standard radio wave has been successfully received. At this time, the time correction means for correcting the current time of the clock means based on the time information contained in the standard radio wave, and the selection order of the frequency are described. A first frequency selection receiving unit that selects the first frequency stored in the selection order storage unit and receives a radio wave, and a first frequency selection receiving unit that selects the first frequency stored in the selection order storage unit. An optimal frequency detecting unit for sequentially receiving standard radio waves of frequencies other than the above and detecting a frequency having the best radio wave receiving condition, and a receiving condition of the frequency detected by the optimal frequency detecting unit being higher than that of the first frequency. When the frequency is good, the frequency is made to function as a first frequency setting unit for setting the frequency to the first frequency of the selection order storage means.

The recording medium according to the tenth aspect is a computer-readable recording medium storing the control program for the radio-controlled timepiece according to the fourth to ninth aspects.

FIG. 2 is a front view showing the radio-controlled timepiece according to the first embodiment of the present invention. It is a block diagram showing the composition of the timepiece of a 1st embodiment. This is a time code format of a long wave standard radio wave (JJY). This is a time code format of a long wave standard radio wave (DCF77). This is a time code format of a long wave standard time signal (MSF). FIG. 2 is a block diagram illustrating a configuration of a control circuit according to the first embodiment. FIG. 5 is a diagram illustrating a data structure of a user setting order storage unit according to the first embodiment. It is a figure showing the data structure of the distance order storage part of a 1st embodiment. FIG. 4 is a diagram illustrating a data structure of a history order storage unit according to the first embodiment. It is a figure showing the data structure of the receiving object station information storage means of a 1st embodiment. 5 is a flowchart illustrating an operation of the control circuit according to the first embodiment. FIG. 9 is a block diagram illustrating a configuration of a control circuit according to a second embodiment. It is a figure showing the data structure of the 1st station and other stations search order storage part of a 2nd embodiment. 9 is a flowchart illustrating the operation of the control circuit according to the second embodiment. FIG. 13 is a block diagram illustrating a configuration of a control circuit according to a third embodiment. 9 is a flowchart illustrating an operation of the control circuit according to the third embodiment. It is a block diagram showing the composition of the control circuit of a 4th embodiment. It is a figure showing the data structure of the user setting order storage part of a 4th embodiment. It is a figure showing the data structure of the order storage part according to frequency of a 4th embodiment. It is a figure showing the data structure of the history order storage part of a 4th embodiment. FIG. 14 is a diagram illustrating a data structure of a reception target station number order storage unit according to the fourth embodiment. 13 is a flowchart illustrating the operation of the control circuit according to the fourth embodiment. 13 is a flowchart illustrating the operation of the control circuit according to the fourth embodiment. FIG. 9 is a block diagram illustrating a configuration of a first modification of the present invention. FIG. 13 is a block diagram illustrating a configuration of a second modification of the present invention.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 ... Electric wave correction clock, 2 ... Hour hand, 3 ... Minute hand, 5 ... Dial, 6 ... Scale, 7 ... Hand, 8 ... Area indicator, 21 ... Antenna, 22 ... Receiving circuit, 23 ... Data storage circuit, 24 ... Control Circuit, 25: Motor drive circuit, 26: Needle position detection circuit, 27: Battery, 28: Display unit, 50: Reference oscillation source, 51: Oscillation circuit, 52: Frequency divider circuit, 53: Time counter, 54: Comparison circuit 55, a time correction control unit, 56, a received radio wave determination unit, 57, a reception frequency switching unit, 60, a reception selection unit, 61, a first reception station selection reception unit, 62, a reception station sequential selection reception unit, 63, optimal Station detection unit, 64: optimal station selection receiving unit, 70: selection order storage unit, 71: user setting order storage unit, 72: distance order storage unit, 73: history order storage unit, 75: first station and other stations Search order storage unit, 80 ... Reception target station information Storage means: 161: first frequency selection receiving section, 162: frequency sequential selection receiving section, 163: optimum frequency detecting section, 164: optimum frequency selection receiving section, 171: user setting order storage section, 172: frequency order storage section 173: history order storage unit, 174: reception target station number order storage unit, 175: first frequency & other frequency search order storage unit, 221: tuning circuit.

Claims (1)

A computer incorporated in a radio-controlled timepiece having a clock signal inputting a reference signal from a reference signal source and clocking the current time, and a receiving device receiving a standard radio wave including time information,
Reception selecting means for selecting a receiving target station from among standard radio wave output stations that output various standard radio waves in which at least one of the frequency and the time information format is different,
A reception frequency switching unit that switches a reception frequency of the reception unit to a frequency according to a reception target station selected by the reception selection unit,
Received radio wave determination means for determining whether the reception of the standard radio wave was successful,
Time correction means for correcting the current time of the clock means based on time information included in the standard radio wave when it is determined that the reception of the standard radio wave was successful,
The reception order selecting means stores the selection order of the reception target station stored therein, and the reception selection means selects the first reception target station stored in the selection order storage means and receives the radio wave. 1 receiving station selection receiving unit;
When it is determined that the radio wave reception by the first receiving station selection receiving unit has failed, the standard radio wave is successfully received according to the selection order stored in the selection order storage means, or all of the stored target stations are stored. A radio-controlled timepiece control program, wherein the radio-controlled timepiece is controlled to function as a receiving station sequential selection receiving unit for sequentially selecting a receiving target station and receiving a radio wave until the selection is completed.

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