JP3632674B2 - Radio correction clock and control method of radio correction clock - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a radio-controlled timepiece and a method for controlling a radio-controlled timepiece.
[0002]
[Background]
In recent years, radio-controlled timepieces that receive radio waves including time information (long wave standard radio waves) and automatically correct and display the time with the time information have come to be used. In particular, conventional radio-controlled timepieces have been centered on clocks (table clocks and wall clocks), but in recent years, they are also incorporated into portable watches (watches and the like).
By the way, the long wave standard radio waves serviced in Japan are the standard radio output stations of Otakado and Mt. (Eastern Japan) with a transmission frequency of 40 kHz and standard radio output stations of Mt. Hagane (West Japan) with a transmission frequency of 60 kHz. It is operated at different frequencies.
On the other hand, services are provided with standard radio waves at frequencies of 77.5 kHz in Germany, 60 kHz in the United Kingdom, and 60 kHz in the United States.
[0003]
The conventional radio-controlled timepiece is configured to receive only the standard radio waves of each country, that is, only one type of standard radio wave. However, in recent years, radio-controlled timepieces incorporating a multi-reception function capable of receiving standard radio waves from a plurality of countries and regions have 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, radio wave correction watches that can handle not only the conventional 40 kHz standard radio wave but also the 60 kHz standard radio wave are being commercialized. As the reception throughout the country is possible and the convenience is increasing, the interest of users is also improving.
[0004]
Furthermore, any radio-controlled timepiece that can handle 40, 60, and 77.5 kHz standard radio waves can be received not only in Japan, but also in the US and central Europe. The probability that the radio wave is unnecessary becomes very high, and a great advantage can be provided to the carrier of the radio-controlled watch.
[0005]
[Problems to be solved by the invention]
By the way, the most serious problem when developing a radio-controlled timepiece incorporating such a multi-reception function is the problem of energy consumption during reception. That is, the radio wave receiving operation consumes the most energy in driving the radio-controlled timepiece.
For this reason, a radio wave correction watch with a built-in multi-reception function performs reception processing of all standard radio waves that can be received when receiving standard radio waves, and receives radio waves with the best reception conditions, such as radio field strength. It is not preferable in terms of energy saving to make it possible to automatically select an appropriate standard radio wave.
In particular, if there are two types of standard radio waves that can be received, two reception operations are sufficient, so energy consumption at the time of reception is not so much. However, if three or more types of standard radio waves can be received, energy consumption In particular, a wristwatch driven by a battery or the like has a problem that the duration is shortened.
[0006]
On the other hand, it is also possible to select a country (Japan, Germany, USA, UK, etc.) or region (East Japan, West Japan, etc.) that the user will receive in advance and receive only the standard radio waves of the selected region. In some cases, the user must select a reception area, which is inferior in terms of operability.
[0007]
An object of the present invention is to receive a different type of standard radio wave and automatically adjust the time in each region, and can efficiently perform a reception operation to save energy and has high operability. And providing a control method thereof.
[0017]
[Means for Solving the Problems]
BookThe invention includes a time measuring means for inputting a reference signal from a reference signal source to measure the current time, a receiving means for receiving a standard radio wave including time information, and various standard radio waves having different frequency and time information formats. A reception selection means for selecting a reception frequency when receiving a standard radio wave of each standard radio wave output station to be output; a reception frequency switching means for switching the reception frequency of the reception means to a frequency selected by the reception selection means; and a standard A reception radio wave determination means for determining whether or not the reception of the 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 the time information included in the standard radio wave. Time correction means for correcting, and selection order storage means for storing the selection order of the frequencies, wherein the reception selection means is the first stored in the selection order storage means A first frequency selective receiving unit that selects a wave number to receive radio waves and a selection order stored in the selection order storage means when it is determined that radio wave reception by the first frequency selective receiving unit has failed. A frequency sequential selection reception unit that sequentially selects a reception frequency and receives a radio wave until reception of a standard radio wave is successful or all stored frequencies have been selected.The order of frequencies stored in the selection order storage means is set in the order in which the number of standard radio wave output stations of the frequencies is larger than the first frequency, and the selection order storage means is the first If the standard radio wave is successfully received at a frequency other than the frequency of, the frequency that has been successfully received is reset to the first frequency.It is characterized by this.
[0018]
According to the present invention, the reception selection unit selects the first frequency set in the selection order storage unit, and the reception frequency switching unit switches the frequency of the reception unit in response to the selection. If the radio-controlled timepiece is in an area where the standard radio wave of that frequency can be received, the standard radio wave is received by the receiving means, and the reception radio wave judging means determines whether or not the reception is successful. Since there are cases where standard radio waves of a plurality of reception target stations exist at the same frequency, the received radio wave determination means includes (A) whether radio waves having a predetermined electric field strength have been received, or (B) included in the standard radio waves. The received time information corresponds to the time information format of the standard radio wave of which reception target station. (C) As a result of analyzing the time information based on the format, the time information correctly specifies the current time. When all the conditions of NO are satisfied, it is determined that the standard radio wave has been successfully received. The determination of whether the time is correct is, for example, receiving a plurality of frames of standard radio waves that output time information (one frame) every minute, and the time information of each frame is data at intervals of one minute. It can be judged by whether or not.
Conversely, if any one of the above three conditions is not satisfied, it is determined that the reception of the standard radio wave has failed.
[0019]
Only when the radio wave reception is not successful at the first frequency, the second frequency is selected and the standard radio wave reception is attempted, and only when the radio wave reception is not successful at the second frequency, the third frequency is received. Other frequencies are sequentially selected only in the case of failure, such as when the standard frequency is selected and reception of the standard radio wave is attempted. For this reason, since it is not necessary to perform reception processing for all the reception target stations as in the prior art, energy consumption can be minimized and energy saving can be achieved.
Furthermore, since radio waves are received by switching the frequency, the radio waves of the reception target station that outputs the standard radio waves of the same frequency can be detected at a time. In other words, due to the nature of standard radio waves, each reception target station is installed in a different region, and even if the reception target stations have the same frequency, the radio waves that can be received at a certain point are those of one reception target station. It is. Therefore, the reception target station can be easily specified by performing reception at the frequency and analyzing the format of the time information when the radio wave is received.
For this reason, if there is a reception target station using standard radio waves of the same frequency, the number of frequencies that must be switched and received is smaller than the number of reception target stations. Therefore, the present inventionVsEven when detecting the radio waves of all the reception target stations serving as elephants, it can be performed with a small number of receptions, and energy saving can be promoted accordingly.
Also, ZhouSince the wave number is automatically selected, the user does not need to perform a time adjustment operation, and convenience can be improved. In addition, the first frequency is the previously received frequency.NumberBecause it is set, there is a high possibility that standard radio waves can be received at that frequency. In many cases, radio wave reception processing can be performed in a short time because radio waves are successfully received at the first frequency. Current consumption can be reduced.In particular, in Japan, the frequency of the standard radio wave is not changed unless it moves between East Japan and West Japan, and it does not change unless it moves between countries outside Japan. It is only during business trips and trips, and the frequency is very low. Therefore, in most cases, radio waves having the same frequency as the previous time may be received, and the processing efficiency can be improved accordingly.
Furthermore, the order of the frequencies stored in the selection order storage means is set in an order in which the number of standard radio wave output stations of the frequency is large among the frequencies other than the first frequency. If there are many output stations (reception target stations) that output the frequency, the probability of successful radio wave reception at that frequency increases, so if you cannot receive at the first, receive immediately at the second or third. There is a high possibility that it can be received, and radio waves can be received efficiently.
[0024]
hereBeforeThe received radio wave judging 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 receives the standard radio wave depending on whether or not the correct time information is obtained. It is preferable to determine success and failure.
[0025]
According to such a configuration, when analyzing the received radio wave in the received radio wave determination means, it is possible to narrow down the time information format of the target standard radio wave output station according to the selected reception target station and frequency. This 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, it is only necessary to analyze the time information based only on the time information format of that station, so that the analysis can be performed in a very short time.
[0036]
Here, in each invention, it is preferable to include a display means for displaying a reception target station that has successfully received the standard radio wave.
If such a display means is provided, the user can easily grasp which station (country) the currently displayed time is, and the convenience can be improved. Even if this display means is not available, it is usually necessary to refer to other clocks in the airport or the town, and to correctly display the current time in the country based on the timing of the sun, sunset, sunrise, etc. It can be judged.
[0037]
Radio correction watch according to the present inventionSystem ofThe method isA first frequency receiving step for receiving a standard radio wave having a preset first frequency from among reception frequencies corresponding to standard radio wave output stations that output various standard radio waves having different frequency and time information formats. When the reception of the standard radio wave fails in the first frequency reception process, the reception of the standard radio wave is successful, or the other frequencies in the preset order are selected until all the frequencies prepared in advance are selected. Other frequency receiving step for sequentially receiving standard radio waves, first frequency setting step for setting the frequency to the first frequency when the standard radio waves are successfully received in the other frequency receiving step, and first frequency receiving step Or a time correcting step of correcting the current time of the time measuring means for displaying the time based on the time information of the standard radio wave when the standard radio wave is successfully received in the other frequency receiving process; Comprising a sequence of preset frequency by the frequency reception process is set in the first large number order of the standard radio wave output station of that frequency in the frequency other than the frequencyIt is characterized by this.
According to this method for controlling a radio-controlled timepiece, the same effects as the radio-controlled timepiece can be achieved.
[0041]
DETAILED DESCRIPTION OF THE INVENTION
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) having 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 including a scale 6 indicating selectable reception target stations and a pointer 7 indicating the currently selected reception target station by pointing to the scale 6. It has been.
[0042]
FIG. 2 shows a circuit configuration of the radio-controlled timepiece 1.
The radio-controlled timepiece 1 includes an antenna 21 that receives a long-wave standard radio wave on which time information is superimposed, a receiving circuit 22 that functions as a receiving unit that processes the long-wave standard radio wave received by the antenna 21 and outputs the time information (time code). A data storage circuit 23 for storing time information output from the receiving circuit 22, a control circuit 24, a motor drive circuit 25 for controlling the driving of the stepping motor for driving the hands 2 and 3, and the hands of the hands 2 and 3. A hand position detection circuit 26 for detecting the position and a battery 27 as a power source for driving each circuit are provided.
[0043]
The antenna 21 is configured 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 composed of a tuning capacitor or the like, and is configured to receive a radio wave having a frequency set by the tuning circuit 221 by the antenna 21. The receiving circuit 22 includes an amplifying circuit, a bandpass filter, a demodulating circuit, a decoding circuit, and the like (not shown), extracts time information (time code) composed of digital data from the received radio wave and stores it in the data storage circuit 23.
[0044]
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 second, and is configured as one record in 60 seconds. That is, one frame is 60-bit data. The data items include the minute of the current time, the hour, the day of the current year from January 1, the year (the last two digits of the year), the day of the week, and “leap second”. The value of each item is configured by a combination of numerical values assigned every 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 seconds per minute), and “P1 to P5” indicate position markers whose positions are determined in advance. It is a signal. The signal indicating the marker is a signal having a pulse width of approximately 0.2 ms. In each item, a signal indicating ON (binary 1) is a signal having a pulse width of approximately 0.5 ms, and OFF (binary 0). ) Is a signal having a pulse width of about 0.8 ms.
In Japan, the long wave standard radio wave (JJY) is 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.
[0045]
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, there is no data 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. Further, 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.
[0046]
In the UK standard radio wave (MSF) time code format shown in FIG. 5, data items of year, month, day, day of the week, hour, minute, and minute synchronization code are set. Further, there is no data until the 17th second, and the presence / absence and position of each position marker P and marker M are different from JJY and DCF77 in FIGS.
Although not shown in the figure, the time code format of the American standard radio wave (WWVB) is also different from that of other countries, and depending on the format (data) of the received time information (time code) It can be discriminated.
[0047]
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 comparison circuit 54, a time correction control unit 55, a received radio wave determination unit 56, a reception frequency switching unit 57, a reception selection unit 60, and a selection order storage unit 70. The reception target station information storage means 80 is provided.
[0048]
The oscillation circuit 51 oscillates a reference oscillation source 50 such as a crystal resonator at a high frequency, and the frequency dividing circuit 52 divides the oscillation signal and outputs it as a predetermined reference signal (for example, a signal of 1 Hz). The time counter 53 counts this reference signal and measures the current time. Therefore, each of the circuits 51 and 52 and the counter 53 constitute the time measuring means of the present invention. Each time the counter 53 counts up, 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.
[0049]
The reception selection means 60 includes a first reception station selection reception unit 61 that selects the standard radio wave output station set as the first reception target station in the selection order storage means 70 and instructs the reception of the standard radio wave, A receiving station sequential selection receiving unit 62 that performs reception operation by sequentially selecting the receiving target stations according to the selection order stored in the selection order storage means 70 when the standard receiving radio wave cannot be received by the second receiving target station; ing.
The reception selection means 60 instructs the switching of the reception frequency by starting the reception circuit 22 and 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. .
[0050]
The selection order storage means 70 stores the order in which the reception selection means 60 selects each reception target station. In this embodiment, three types of orders are set as the selection order storage method.
In other words, the selection order storage means 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.
[0051]
As shown in FIG. 7, the user setting order storage unit 71 stores the reception target stations and the setting order corresponding to the user setting input. 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 behavior pattern and the like.
[0052]
In the distance order storage unit 72, as shown in FIG. 8, an order corresponding to the distance between countries is set. 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 viewpoint), and the like. Specifically, the setting order of each reception target station when starting from each reception target station is stored. This data is preset as an initial value, but this data can be changed by the user.
[0053]
In the history order storage unit 73, as shown in FIG. 9, each reception target station is set in the reception history of standard radio waves, specifically, in descending order of the number of receptions. For example, in the example of FIG. 9, the western Japan that received the previous radio wave is set first, and the second and lower are arranged in the order of the number of receptions “East Japan, USA, Germany, UK”.
[0054]
The reception selection 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 these storage units 71 to 73.
When the distance order storage unit 72 is selected, it is necessary to specify which reception target station is the starting point (first station). This specification may be specified by the user, but normally, the previous reception target station is the first station.
[0055]
Here, in the present embodiment, three types of orders (storage units 71 to 73) are configured to be selectable. However, it is configured so that only one or two can be selected and set. Also good.
In the following description of the present embodiment, an example will be described in which the distance order storage unit 72 is selected and East Japan (JJY, 40 kHz) is selected as the starting station.
[0056]
As shown in FIG. 10, the reception target station information storage means 80 stores at least the frequency of the standard radio wave at each reception target station and the code format of its time information.
[0057]
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). Further, manual forced reception can be performed by the user operating an external operation member such as a crown.
[0058]
The standard radio wave reception operation is executed based on the flowchart shown in FIG. That is, when the reception operation is started, the variable n representing the selection order is set to the initial value 1 (step 1, hereinafter, step is abbreviated as “S”). Subsequently, the first receiving station selecting / 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, East Japan is selected. The standard radio wave reception process is executed (S2).
Specifically, the first receiving station selecting / receiving unit 61 of the receiving selecting means 60 operates the receiving circuit 22 and receives the frequency information of the standard radio wave corresponding to the selected receiving target station as the receiving target station information storing means 80. , And based on the frequency information, the tuning circuit 221 is controlled via the reception frequency switching means 57 to switch the reception frequency and execute radio wave reception.
[0059]
And the 1st receiving station selection receiving part 61 determines whether the standard radio wave of the 1st receiving object station was able to be received (S3). Specifically, first, the electric field strength and reception sensitivity of the radio wave are detected in the receiving circuit 22, and the first receiving station selection receiving unit 61 determines whether or not a radio wave of a predetermined level or higher is received based on the detection result. When radio waves of a predetermined level or higher are 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 reception target station. It is determined whether they match and the time information is correct data, and the result is also notified to the first receiving station selection receiving unit 61.
Whether or not the data is correct may be determined based on whether, for example, a plurality of consecutive frames (one-minute data) each represent a time of one minute, as in the data determination in a normal radio-controlled timepiece.
Here, it is determined that the radio wave reception is successful (reception OK) only when it is determined that it matches the predetermined format and represents the correct time (S3). In other cases, that is, radio wave reception exceeding a predetermined level is received. If there is no radio wave reception but the data is different from the time code format of the first receiving target station, the format is correct, but there is an error in the time information actually received, It is determined as failure (reception NG) (S3).
[0060]
If the radio wave reception is successful at the first reception target station, the reception selection unit 60 stops the reception circuit 22 and ends the reception operation, and the time correction process (S10) by the time correction control unit 55 which is a time correction unit. ).
[0061]
On the other hand, when reception fails, the reception selection means 60 operates the receiving station sequential selection reception unit 62. Specifically, 1 is added to the variable n to obtain “n = 2” (S4), and “n> 5”, that is, only five reception target stations are set in this embodiment. It is determined whether the selection order is 5 or less (S5).
If n is 5 or less, the receiving station sequential selection receiving unit 62 is operated to select the nth receiving target station (the second receiving target station if n = 2) and receive the standard radio wave. This is executed by the same method as that for the first receiving target station (S6).
[0062]
Next, it is determined whether the reception at the nth reception target station has been successful (S7). This determination method is also the same as the determination process (S3) in the first reception target station. And when reception fails, the process of S4-S7 is repeated until reception is successful. That is, the selection of the third to fifth reception target stations and the radio wave reception process are repeated.
When radio wave reception is successful in any of the second to fifth reception target stations (S7), the reception target station that has successfully received the reception is set as the first reception target station (S8). When the distance order storage unit 72 is used, data of the reception target station starting point is selected.
[0063]
And the reception selection means 60 sets the display of the area indicator 8 to the updated 1st receiving object station by aligning the pointer 7 with the scale 6 of the 1st receiving object station (S9).
Furthermore, a time correction process is performed based on the time information of the received radio wave (S10). The time correction process may be performed in the same manner as a normal radio correction clock. For example, the time information determined to be correct by the received radio wave determination means 56 is compared with the current hand position information by the comparison circuit 54, and a pulse corresponding to the difference is output from the time correction control unit 55 to output the time counter 53. And the time correction may be performed by changing the position of the hands 2 and 3 of the display unit 28 by the motor drive circuit 25.
[0064]
If it is determined in S5 that “n> 5”, the standard radio waves could not be received even when the first to fifth reception target stations were sequentially switched. The receiving process is terminated without updating. In this case, the reception process may be performed again after a preset time, for example, two hours later, or the reception based on the regular schedule is skipped once and at the next periodic reception time (for example, one day later). What is necessary is just to make it receive.
The above processing is executed at the time of the periodic reception processing that is automatically performed, and at the time of the manual reception processing by the user operating the crown or the like.
[0065]
When the user setting order storage unit 71 is selected in the selection order storage unit 70, the above process may be performed in the set order. In this case, when the first reception target station is changed to the actually received target station (S8), the original first reception target station and the subsequent stations may be sequentially lowered.
Further, even when the history order storage unit 73 is selected, the above-described processing may be performed in the set order. In this case, when the first reception target station is changed to the actually received target station (S8), the second to fifth reception 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 a target station that has actually received radio waves, but the number of receptions including the reception is updated. , May be arranged in descending order. In other words, in the example of FIG. 9, even if the United States is received, the number of receptions is still higher in East Japan. The station that is initially received when receiving radio waves may be left in eastern Japan.
[0066]
According to such 1st Embodiment, there can exist the following effects.
(1) During the reception process of the standard radio wave, the first receiving station selection receiving unit 61 of the reception selection unit 60 selects the first reception target station set in the selection order storage unit 70 and receives the radio wave. At this time, only when reception of correct radio waves is not possible, the receiving station sequential selection receiving unit 62 selects and receives other receiving target stations, so that it is necessary to perform reception processing for all receiving target stations as in the past. Therefore, energy consumption can be minimized and energy saving can be achieved.
In particular, even when another receiving target station is selected by the receiving station sequential selection receiving unit 62, the second receiving target station is first selected and the standard radio wave is received, and the second receiving target station receives the radio wave. Only when it is not successful, the third reception target station is selected and the standard radio wave is tried to be received. Other reception target stations are selected sequentially only when they fail, so the radio wave reception is successful. The number of times of reception can be reduced, and further energy saving can be achieved.
[0067]
(2) As the first reception target station, a station that has been successfully received last time is set, and in normal use, there is a high possibility that the reception target station can receive the standard radio wave again. Since the reception of the radio wave at the first reception target station is successful, the radio wave reception process can be performed in a short time, and the current consumption can be reduced accordingly.
[0068]
(3) Since the selection order of other reception target stations by the receiving station sequential selection receiving unit 62 can be appropriately selected by the user from the three types of storage units 71 to 73 in which different setting methods are set, Each station to be received can be selected in the order that suits the user of the watch 1, and even if reception of radio waves fails first, there is a high possibility that radio waves can be received as early as second or third. Less.
[0069]
(4) In addition, if the user setting order storage unit 71 is used, the selection order can be set in accordance with the action pattern of the user of the watch 1, so that the standard radio wave can be received efficiently.
[0070]
(5) In addition, since the movement of the user is more likely when the distance is close, if the setting order is set in the order of distance using the distance order storage unit 72, it cannot be received first. Even in the case where the signal is received, there is a high possibility that it can be received immediately in the second to third times, and radio waves can be received efficiently. Further, since the distance order storage unit 72 is initially set with data, it can be easily used without the user inputting data as in the user setting order storage unit 71.
In addition, if the distance order storage unit 72 is selected as an initial mode and a predetermined starting point (for example, “East Japan”) is set therein, even if the radio-controlled timepiece 1 is used for the first time, forced reception is performed. If this operation is performed, this function can be used, so radio wave reception can be executed with a very simple operation, and the first receiving target station can be set.
[0071]
(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 watch 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's data input operation is unnecessary, and therefore, the user setting order storage unit 71 can be used very easily.
[0072]
(7) According to the present embodiment, since the reception target station is automatically selected, the user needs to select the reception target station and determine which reception target station has good reception conditions. It is possible to improve convenience. In particular, in Japan, both radio waves can be received in the middle area (Kyoto) of each receiving target station in east and west, but which radio wave is more suitable for reception depends on where the clock is located (mountain or building is Judgment is difficult because it depends on which side it is on. However, in this embodiment, since the reception target station is automatically selected, there is no need for the user to make a particular determination, and the user can easily use and install the mobile station and move with the user like a wristwatch. However, since the optimum station at the moving location is automatically selected, radio waves can be reliably received and the time can be adjusted.
[0073]
(8) Since the area indicator 8 for displaying the reception target station that has received the standard radio wave is provided, the user can easily grasp which station (country) the displayed time is. Can increase the sex.
[0074]
[Second Embodiment]
Next, the radio-controlled timepiece 1 of the 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 is omitted or simplified.
The present 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 means 60, and changes thereof Accordingly, the selection order storage means 70 is different from the first embodiment in that only the first station and the other station search order storage unit 75 are provided. To do.
[0075]
As shown in FIG. 13, the first station and other station search order storage unit 75 searches the station set as the first reception target station (Eastern Japan in FIG. 13) and other reception target stations (setting order 2). Is set.
The optimum station detection unit 63 searches for a reception target station according to this search order. That is, the radio waves of each station are received for a short time, and the reception conditions such as the electric field strength and reception sensitivity of the radio waves are obtained to detect the station with the best conditions. At this time, since it is only necessary to obtain the radio wave reception conditions, it is not necessary to search for each station having the same frequency. For this reason, in the first station and the other station search order storage unit 75, the reception target stations having the same reception frequency are set in the same order. As in the first embodiment, the order for each frequency may be set based on the user settings, the reception history, and the order of frequencies close to the frequency of the first reception target station, but in this embodiment, They are set in the order of the number of receiving target stations corresponding to each frequency.
The optimum station selection / reception unit 64 selects a station (frequency) optimized by the optimum station detection unit 63 and receives radio waves.
[0076]
Such reception processing in the second embodiment will be described based on the flowchart of FIG.
Similar to the first embodiment, when the reception process is started periodically or manually, the first receiving station selection receiving unit 61 of the reception selecting means 60 is driven, and the first station of the selection order storage means 70 and The first reception target station stored in the other station search order storage unit 75, that is, East Japan, is selected, and the standard radio wave reception process is executed (S21). The specific reception process is the same as that in the first embodiment.
[0077]
And it is determined similarly to 1st Embodiment whether the standard radio wave of the 1st receiving object station was able to be received (S22).
Here, when it is determined that the radio wave reception is successful (reception OK) (S3), the time correction process (S28) is executed.
On the other hand, when reception fails, the reception selection means 60 operates the optimal station detection unit 63. The optimal station detection unit 63 receives radio waves from stations other than the first reception target station for a short time, and detects optimal reception conditions (S23).
[0078]
Specifically, the optimum station detection unit 63 first performs radio wave reception by switching to the reception frequency (60 kHz) of Western Japan set in the second order via the reception frequency switching means 57, and the electric field strength and reception at that time Reception condition information such as sensitivity is received from the reception 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, radio waves having different frequencies are not set otherwise, but if they are set, reception conditions are obtained by sequentially switching the frequencies.
If a station other than the first reception target station has the same frequency as the first reception target station, it may be received again at that frequency, or the first reception process may not be performed again. You may use the receiving conditions at the time of performing the receiving process (S21) in a receiving station as it is.
Then, the optimum station detection unit 63 detects a station (frequency) having the optimum reception condition among them, and notifies the optimum station selection reception unit 64 (S23).
[0079]
The optimum station selection / reception unit 64 selects a station (frequency) having the detected optimum reception condition, and again performs radio wave reception processing at that reception frequency (S24). Then, it is determined whether or not radio wave reception at that frequency (optimum receiving station) has been successful (S25).
At this time, as in the first embodiment, it is also determined whether the time code format of the received data or the data is correct. For example, the following processing is performed. In other words, if there is only one station that outputs radio waves of the reception frequency, the determination may be made using the format of that station. On the other hand, when there are a plurality of stations such as 60 kHz, the time code format of each station is different as described above, so it is determined which station format is based on the received time information. The determination may be made based on the format.
[0080]
When radio wave reception at the optimum receiving station is successful (S25), the receiving target station that has succeeded in receiving is set as the first receiving target station (S26).
And the reception selection means 60 sets the display of the area indicator 8 to the updated 1st receiving object station by aligning the pointer | guide 7 with the scale 6 of a 1st receiving object station (S27). Furthermore, a time correction process is performed based on the time information of the received radio wave (S28). Note that the time correction processing method is the same as that in the first embodiment, and a description thereof will be omitted.
[0081]
On the other hand, if radio wave reception has failed even at the optimum receiving station (S25), the receiving process is terminated without performing time adjustment or updating the first receiving target station. Also in this case, the reception process may be performed again after a preset time, for example, two hours later, or reception based on a regular schedule is skipped once and the next periodic reception time (for example, one day later) It is sufficient to perform reception.
Each of the above-described processes S21 to S28 is executed during a radio wave receiving operation.
[0082]
Also in the second embodiment, the same operational effects as (1), (2), (7), and (8) of the first embodiment can be obtained.
(9) Furthermore, since the optimal station detector 63 detects a station (frequency) with good radio wave reception conditions and receives radio waves, it is most likely to succeed in radio wave reception, and has the best reception conditions. It is possible to detect a target receiving station in a short time. In other words, if it is only for confirmation of reception conditions, it can be received in a very short time compared to reception of time information, so it can receive all the radio waves from all stations other than the first reception target station. The reception process can be performed in a very short time. And, since only the reception target station with the best reception conditions actually receives the time information, even if the radio wave reception process for confirming the reception conditions is performed, the radio wave reception as a whole is short. Can succeed. Therefore, it is possible to eliminate the unnecessary long-time reception operation as in the prior art, and the effect of reducing current consumption can be further increased.
[0083]
(10) Since the optimum station detection unit 63 can confirm the reception condition for a reception target station of the same frequency by one reception, there are only three types of frequencies even if there are five reception target stations. In order to confirm the radio wave reception conditions of all the stations, it is sufficient to perform the radio wave reception up to three times, and accordingly, the radio wave reception time can be shortened and the current consumption can be further reduced.
[0084]
[Third Embodiment]
Next, the radio-controlled timepiece 1 according to the third embodiment will be described with reference to FIGS.
This embodiment is different from the second embodiment in that a first receiving station setting unit 65 is provided instead of the optimum station receiving unit of the receiving selection means 60, and as shown in FIG. Since the processing at the time of radio wave reception is different and the other configuration is the same as that of the second embodiment, description thereof is omitted.
[0085]
In the third embodiment, the standard radio wave is always received only by the first reception target station, and the first reception target station is received at regular intervals such as when the number of receptions at the first reception target station is performed a set number of times. Is used to select the optimum station for setting the.
Therefore, the first station and other station search order storage unit 75 of the selection order storage means 70 are the same as those in the second embodiment.
The first receiving station selection receiving unit 61 and the optimum station detecting unit 63 in the receiving selection means 60 are the same as those in the second embodiment, and in addition, a first receiving station setting unit 65 is provided. Other configurations are the same as those in the above embodiments.
[0086]
The reception 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 receiving station selection receiving unit 61 of the receiving selection means 60 is driven, and the first station and the others of the selection order storage means 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 standard radio wave reception process is executed (S31). The specific reception process is the same as that in the second embodiment.
[0087]
And it is determined similarly to 1st Embodiment whether the standard radio wave of the 1st receiving object station was able to be received (S32).
Here, when it is determined that the radio wave reception is successful (reception OK) (S32), the time adjustment process (S33) is executed, and the display of the area indicator 8 is set to the receiving station (first receiving target station) ( S34). In general, since reception at the same first reception target station continues, the actual instruction of the indicator 8 is not actually changed unless processing by the first station setting unit 68 described later is performed.
[0088]
After the processing, or when it is determined that the reception has failed in S32, it is determined whether the reception execution frequency at the first reception 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 5 (5 days), the following processing is performed every 5 days.
[0089]
If it is determined in S35 that the specified number of times has been performed, the optimum station detection unit 63 is activated, and in the same manner as in the second embodiment, the radio waves of stations other than the first reception target station are received for a short time to obtain the optimum reception. The station (frequency) of the condition is detected (S36).
[0090]
And the 1st receiving station setting part 65 determines whether there exists a receiving condition better than a 1st receiving station among the receiving conditions for each of these frequencies (S37).
If there is a good reception condition, the receiving station of the optimum condition is set as the first receiving target station in the first station and the other station search order storage unit 75 (S38).
Accordingly, in the next radio wave reception process, a station newly set as the first reception target station is selected and the reception process is executed (S31). At that time, if reception is successful, time correction processing (S33) is performed, and the area indicator is changed to the first reception target station (S34).
If the specified number of times has not been reached in S35, or if there are no stations with good reception conditions in S37, the first reception target station is not changed.
Each of the above processes S31 to S35 is executed at the time of radio wave reception operation, and S36 to S38 are performed at regular time intervals (for example, every 5 days).
[0091]
Also in such 3rd Embodiment, there can exist an effect similar to (1), (2), (7), (8), (10) of each said embodiment.
(11) Furthermore, since the optimal station detection unit 63 periodically detects a station (frequency) with good radio wave reception conditions and updates the first reception target station to a station with the optimal conditions, a more reliable time Information can be easily obtained. That is, in the first and second embodiments, when the first reception target station successfully receives radio waves, the first reception target station is not changed. For this reason, although the probability is low, there is a similar error in each received time information, and when it is determined that the reception is successful because it happens to be time information at 1 minute intervals, an accurate time cannot be obtained. there is a possibility. Such a state has a high probability of occurring particularly when receiving weak radio waves. In other words, the weak radio wave has a reduced signal-to-noise ratio and the margin of the signal with respect to dive noise, so that the error rate of the acquired time information is higher when a weak radio wave is received than when a strong radio wave is received. This is because it becomes higher. Therefore, even if the radio wave reception is successful, if it is possible to receive a stronger radio wave, it is preferable to receive the radio wave. In this embodiment, even if the first reception target station has successfully received a weak radio wave, the optimum reception target station is periodically detected and the first station is updated, so that it is strong. Radio waves can be received, the probability of reception can be improved, the error rate can be reduced, and accurate time information can be obtained with certainty.
[0092]
(12) In addition, since the optimal station detection and the setting of the first receiving station are not performed at every reception, but are performed when reception is performed several times, the current consumption can be further reduced. it can.
[0093]
[Fourth Embodiment]
Next, the radio-controlled timepiece 1 according to the fourth embodiment will be described with reference to FIGS.
The present embodiment is largely different from the first embodiment in that the selection is made in units of the reception target station, whereas the selection is made in units of the frequency of the standard radio wave. In other words, there are stations that output radio waves of the same frequency among the reception target stations, and because the time code format is different even for radio waves of the same frequency, each station can be identified by the received time information. Paying attention, the reception processing itself is performed in units of frequency.
[0094]
For this reason, the reception selection means 60 of this embodiment includes a first frequency selection reception unit 161 corresponding to the first reception station selection reception unit 61 of the first embodiment and a frequency sequential correspondence corresponding to the reception station sequential selection reception unit 62. A selective receiving unit 162 is provided.
In addition, the selection order storage means 70 is provided with a user setting order storage unit 171, an order storage unit by frequency 172, a history order storage unit 173, and a reception target station number order storage unit 174.
[0095]
The user setting order storage unit 171, the frequency order storage unit 172, the history order storage unit 173, and the reception target station number order storage unit 174 set the order after collecting the reception target stations by frequency. 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, the frequency 40 kHz (East Japan) is set to the first, 60 kHz (West Japan, USA, UK) is set to the second, and 77.5 kHz (Germany) is set to the third.
In the frequency-specific order storage unit 172, the second and subsequent orders are set in the order of frequencies that are close to the frequency that is currently set as the first (starting point), that is, in the order of frequencies that have a small difference from the starting point frequency. That is, in the example of FIG. 19, when 40 kHz (Eastern Japan) is the first, they are set in the order of 60 kHz and 77.5 kHz. Similarly, when 60 kHz is set as the first (starting point) and 77.5 kHz is set as the first (starting point), they are set in the order shown in FIG.
[0096]
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 highest number of times.
The reception target station number order storage unit 174 is arranged in the order of the number of reception target stations for each frequency. This is because, if the number of reception target stations is large, there is a high possibility that radio waves can be received when receiving at that frequency.
[0097]
The reception process in the fourth embodiment will be described based on the flowcharts of FIGS.
Similar to the first embodiment, when the reception process is started periodically or manually, the variable n indicating the selection order is set to the initial value 1 (S41). Next, the first frequency selection reception unit 161 selects the first frequency from any one of the storage units 171 to 174 selected in advance, and tunes via the reception frequency switching means 57 based on the frequency. The circuit 221 is controlled and radio wave reception is executed (S42). Here, the reception circuit 22 determines whether or not a predetermined reception condition such as electric field strength is satisfied (S43). If a radio wave satisfying the reception condition is received, the received radio wave determination means 56 sends the radio wave. It is determined which station is a reception target station and whether the received time information is correct (S44).
At this time, since the frequency is specified, the received radio wave determination means 56 can determine which station's radio wave by comparing the received information with the time code format of the reception target station that outputs the radio wave of that frequency. Whether or not the reception time is accurate may be determined by receiving a plurality of frames of data 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 reception target station (S46), and the same time correction processing as in each embodiment is performed (S47).
[0098]
On the other hand, when the radio wave reception conditions are poor in S43, or when it is determined that the reception is NG in S45, the frequency sequential selection reception 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 obtain “n = 2” (S51), and whether “n> 3”, 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).
If n is 3 or less, the frequency sequential selection receiving unit 162 selects the nth frequency (the second frequency if n = 2) from the selection order storage means 70, and receives the standard radio wave for the first time. This is executed in the same way as for the frequency (S53).
[0099]
Next, it is determined whether a predetermined reception condition is satisfied at the nth frequency (S54). Here, if the reception condition is not satisfied, the process from 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 process are repeated.
When a predetermined reception condition is satisfied at any one of the second to third frequencies (S54), the received radio wave determination means 56 indicates which reception target station the radio wave belongs to and the received time information is correct. (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 reception target station of the detected radio wave is set as the first reception target station (S57), and the display of the area indicator 8 is displayed on the reception station (first (S58) and time correction processing is performed (S59).
On the other hand, if it is determined in S56 that reception has failed, the process returns to S51 and the process is repeated.
[0100]
Also in such 4th Embodiment, there can exist the same effect as (1)-(4), (6)-(8) of the said 1st Embodiment.
(13) Furthermore, since radio wave reception is switched by selecting a frequency, reception of radio waves of all stations is performed as compared with the first embodiment in which the reception target station is selected, similarly to the effect of (10). Even when the conditions are confirmed, the number of times of reception can be reduced, and accordingly, the radio wave reception time can be shortened and current consumption can be further reduced.
(14) Further, in contrast to the first embodiment, when there are a plurality of reception target stations having the same frequency, it is necessary to determine which reception target station is the received radio wave. Since it is confirmation of the format of the information data, software processing may be performed, determination can be made in a very short time, and the burden on the watch 1 is not increased. In particular, in order to convert time information actually received into time data to be used for time correction, analysis based on the format is necessary. Therefore, analysis of received data is a necessary process anyway. As compared with the above, the number of receptions can be reduced, and energy saving can be promoted and the time duration of the timepiece 1 can be lengthened.
[0101]
It should be noted that the present invention is not limited to each embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.
[0102]
For example, in the fourth embodiment, the reception target station selection in the first embodiment is replaced with frequency selection. Similarly, the reception target station selection in the second and third embodiments may be replaced with frequency selection. Good.
That is, as shown in FIG. 24, the reception selection means 60 is provided with an optimal frequency detection unit 163 and an optimal frequency selection reception unit 164 in addition to the first frequency selection reception unit 161, and cannot receive radio waves at the first frequency. In this case, the optimum frequency detection unit 163 uses the first frequency & other frequency search order storage unit 175 to sequentially switch frequencies to detect the frequency at which the reception condition is optimum, and the optimum frequency selection reception unit 164 detects the frequency. The same control as that of the second embodiment may be performed by performing selection and reception.
[0103]
Further, as shown in FIG. 25, the reception selection means 60 is provided with an optimal frequency detection unit 163 and a first frequency setting unit 165 in addition to the first frequency selection reception unit 161, and cannot receive radio waves at the first frequency. In this case, the optimum frequency detector 163 uses the first frequency & other frequency search order storage unit 175 to sequentially switch the frequency to detect the frequency with the optimum reception condition, and the reception condition of the frequency is the first frequency. If it is better than the above case, the same control as in the third embodiment may be performed by updating the first frequency by the first frequency setting unit 165.
In each of these timepieces 1, the same operational effects as those of the second and third embodiments can be obtained, and the operational effects (13) and (14) of the fourth embodiment can also be achieved.
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 as long as the selection order is set for each frequency.
[0104]
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 optimal station detection performed at a predetermined interval of the third embodiment and the update of the first reception 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 operational effects of the respective embodiments can be achieved.
[0105]
The format of the area indicator 8 is not limited to the one using the pointer 7 as in the above-described embodiment, but the lamp indicating each area (reception target station) is turned on, or the name of the receiving station is displayed using the liquid crystal display unit. Other formats, such as, may be adopted. Further, the area indicator 8 is not necessarily required, and it is not necessary to provide only a lamp indicating the radio wave reception state or to display anything.
[0106]
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. In this case, which storage unit is provided? What is necessary is just to set suitably in implementation.
[0107]
The circuits and means in the control circuit 24 are not limited to those configured by hardware such as various logic elements, but a computer having a CPU (central processing unit), a memory (storage device), etc. The computer may be configured such that each unit is realized by incorporating a predetermined program or data (data stored in each storage unit) into the computer.
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 recorded in the memory such as communication means such as the Internet, CD-ROM, memory card or the like. It is only necessary to install via a medium and operate the CPU or the like with the installed program to realize 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 a device that reads these storage media is connected to the timepiece. 1 may be connected. Furthermore, a LAN cable, a telephone line or the like may be connected to the watch 1 to supply and install a program or the like by communication, or since the antenna 21 is provided, the program may be supplied and installed wirelessly. .
[0108]
If a 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 each invention can be realized only by changing the program. A control program to be selected can be selected and incorporated. In this case, since various radio-controlled timepieces 1 having different control formats can be manufactured only by changing the program, the parts can be shared, and the manufacturing cost when developing variations can be greatly reduced.
[0109]
The functions of the radio-controlled timepiece, that is, each configuration of the time measuring means, the receiving means, the time correcting means, etc. is not limited to that of the above-described embodiment, and each means of a conventionally known radio-controlled timepiece can be used.
In the above-described embodiment, five reception target stations can be selected. However, the number of selectable reception target stations and specific countries (regions) may be set as appropriate in implementation. Also in this case, since the contents of the selection order storage means 70 and the reception target station information storage means 80 need only be rewritten, the user can easily set the contents.
[0110]
The radio-controlled timepiece 1 of the present invention is not limited to an analog type timepiece, and may be a digital type timepiece or a timepiece having a pointer and a liquid crystal display unit. Furthermore, the radio wave correction watch 1 can be applied to various watches such as a portable watch such as a wrist watch or a pocket watch, and an installation type watch such as a wall clock or a table clock.
[0111]
[Other Embodiments of the Present Invention]
The control method of the radio-controlled timepiece according to the first aspect is the first preset from the reception frequencies corresponding to the standard radio wave output stations that output various standard radio waves having different frequency and time information formats. 1st frequency reception process to receive the standard radio wave of the frequency, and when the standard radio wave reception fails in the first frequency reception process, the standard radio wave reception is successful or all the prepared frequencies are selected Until the process is completed, the other frequency receiving process for sequentially receiving standard radio waves of other frequencies in a preset order, and when the standard radio wave is successfully received in the other frequency receiving process, the frequency is set to the first frequency. When the standard radio wave 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 time measuring means for displaying the time is indicated by the standard power A time correction step of correcting, based on the time information, characterized in that it comprises a.
[0112]
The control method of the radio-controlled timepiece according to the second aspect is the first preset from the reception frequencies corresponding to the standard radio wave output stations that output various standard radio waves having different frequency and time information formats. A first frequency receiving step for receiving a standard radio wave having a frequency of 1 and when receiving the standard radio wave in the first frequency receiving step fails to receive standard radio waves of other frequencies sequentially in a preset order. Optimal frequency detection process that detects the frequency with the best reception condition of radio waves, optimal frequency reception process that receives the standard radio wave of the frequency detected in the optimal frequency detection process, and reception of standard radio waves in the optimal frequency reception process When successful, the first frequency setting step for setting the frequency to the first frequency and the reception of the standard radio wave in the first frequency receiving step or the optimum frequency receiving step are performed. When the, characterized in that it comprises 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.
[0113]
The control method of the radio-controlled timepiece according to the third aspect is the first preset from among the reception frequencies corresponding to the standard radio wave output stations that output various standard radio waves having different frequency and time information formats. A first frequency receiving step for receiving a standard radio wave having a predetermined frequency and an optimum frequency detecting step for detecting a frequency with the best radio wave receiving conditions by sequentially receiving standard radio waves of other frequencies in a preset order. And when the reception condition of the frequency detected in the optimum frequency detection step is better than the first frequency, the first frequency setting step of setting the frequency to the first frequency, and the standard in the first frequency reception step A time correction step of correcting the current time of the time measuring means for displaying the time based on the time information of the standard radio wave when reception of the radio wave is successful.
[0114]
A control program for a radio-controlled timepiece according to a fourth aspect includes a time correction means for inputting a reference signal from a reference signal source to measure the current time, and a reception means for receiving a standard radio wave including time information. A computer incorporated in a watch, receiving selection means for selecting a reception target station from each standard radio wave output station that outputs various standard radio waves having different frequency and time information formats, and a reception frequency of the receiving means. The reception frequency switching means for switching to the frequency corresponding to the reception target station selected by the reception selection means, the reception radio wave determination means for determining whether or not the standard radio wave has been successfully received, and the standard radio wave has been successfully received. A time correcting means for correcting the current time of the time measuring means based on time information included in the standard radio wave when determined, and a selection order of the reception target stations. Functioning as a memorized selection order storage means, and the reception selection means, a first receiving station selection receiving section for selecting a first reception target station stored in the selection order storage means and receiving radio waves; When it is determined that reception of radio waves at the first receiving station selection receiving unit has failed, all reception target stations that have successfully received standard radio waves according to the selection order stored in the selection order storage means or have been stored. Until reception is completed, the receiving station sequentially selects and receives a radio wave and functions as a receiving station sequential selection receiving unit.
[0115]
A control program for a radio-controlled timepiece according to a fifth aspect of the invention includes a radio-frequency correction comprising: a time measuring unit that inputs a reference signal from a reference signal source to measure the current time; and a receiving unit that receives a standard radio wave including time information. A computer incorporated in a watch, receiving selection means for selecting a reception target station from each standard radio wave output station that outputs various standard radio waves having different frequency and time information formats, and a reception frequency of the receiving means. The reception frequency switching means for switching to the frequency corresponding to the reception target station selected by the reception selection means, the received radio wave determination means for determining whether or not the standard radio wave has been successfully received, and the successful reception of the standard radio wave Time determination means for correcting the current time of the time measuring means based on time information included in the standard radio wave when determined, and a selection order of the reception target stations A first receiving station selection receiving unit that functions as a stored selection order storage unit, and that receives the radio wave by selecting the first reception target station stored in the selection order storage unit; When it is determined that the reception of radio waves at 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 reception with the best radio wave reception conditions is performed. An optimum station detection unit that detects a target station, and an optimum station selection reception unit that receives a radio wave by selecting a reception target station detected by the optimum station detection unit.
[0116]
A control program for a radio-controlled timepiece according to a sixth aspect includes a time correction unit that inputs a reference signal from a reference signal source and counts the current time, and a reception unit that receives a standard radio wave including time information. A computer incorporated in a watch, receiving selection means for selecting a reception target station from each standard radio wave output station that outputs various standard radio waves having different frequency and time information formats, and a reception frequency of the receiving means. The reception frequency switching means for switching to the frequency corresponding to the reception target station selected by the reception selection means, the reception radio wave determination means for determining whether or not the standard radio wave has been successfully received, and the standard radio wave has been successfully received. Time determination means for correcting the current time of the time measuring means based on time information included in the standard radio wave when determined, and a selection order of the reception target stations A first receiving station selecting / receiving unit for functioning as a stored selection order storage unit and for receiving the radio wave by selecting the first receiving target station stored in the selection order storage unit; An optimum station detector that sequentially receives the standard radio waves of reception target stations other than the first reception target station and detects a reception target station with the best radio wave reception conditions, and a reception detected by the optimum station detection unit When the reception condition of the target station is better than that of the first reception target station, the reception target station is caused to function as a first reception station setting unit that sets the reception target station as the first reception target station of the selection order storage unit. Features.
[0117]
A control program for a radio-controlled timepiece according to a seventh aspect includes a time correction unit that inputs a reference signal from a reference signal source and counts the current time, and a reception unit that receives a standard radio wave including time information. A receiving selection means for selecting a receiving frequency when receiving a standard radio wave of each standard radio wave output station that outputs various standard radio waves having different frequency and time information formats from a computer incorporated in a watch; and the receiving means The reception frequency switching means for switching the reception frequency to the frequency selected by the reception selection means, the reception radio wave determination means for determining whether or not the standard radio wave has been successfully received, and the standard radio wave has been successfully received. The time adjustment means for correcting the current time of the time measuring means based on the time information included in the standard radio wave, and the frequency selection order are stored. A first frequency selection receiving unit that receives the radio wave by selecting the first frequency stored in the selection order storage unit, and the first frequency selection receiving unit. When it is determined that the radio wave reception at the receiving unit has failed, reception is successful until the standard radio wave is successfully received according to the selection order stored in the selection order storage means or all the stored frequencies are selected. It is characterized by functioning as a frequency sequential selection receiving unit that sequentially receives frequencies and receives radio waves.
[0118]
According to an eighth aspect of the present invention, there is provided a radio-controlled timepiece control program including a time measuring means for inputting a reference signal from a reference signal source to measure the current time, and a receiving means for receiving a standard radio wave including time information. A receiving selection means for selecting a receiving frequency when receiving a standard radio wave of each standard radio wave output station that outputs various standard radio waves having different frequency and time information formats from a computer incorporated in a watch; and the receiving means The reception frequency switching means for switching the reception frequency to the frequency selected by the reception selection means, the reception radio wave determination means for determining whether or not the standard radio wave has been successfully received, and the standard radio wave has been successfully received. The time adjustment means for correcting the current time of the time measuring means based on the time information included in the standard radio wave, and the frequency selection order are stored. A first frequency selection receiving unit that receives the radio wave by selecting the first frequency stored in the selection order storage unit, and the first frequency selection receiving unit. When it is determined that reception of radio waves by the receiving unit has failed, an optimal frequency detection unit that sequentially receives standard radio waves of frequencies other than the first frequency and detects a frequency with the best radio wave reception conditions; It is characterized by functioning as an optimum frequency selection receiving unit that selects a frequency detected by the optimum frequency detection unit and receives radio waves.
[0119]
A control program for a radio-controlled timepiece according to a ninth aspect includes a time correction unit that inputs a reference signal from a reference signal source and clocks the current time, and a reception unit that receives a standard radio wave including time information. A receiving selection means for selecting a receiving frequency when receiving a standard radio wave of each standard radio wave output station that outputs various standard radio waves having different frequency and time information formats from a computer incorporated in a watch; and the receiving means The reception frequency switching means for switching the reception frequency to the frequency selected by the reception selection means, the reception radio wave determination means for determining whether or not the standard radio wave has been successfully received, and the standard radio wave has been successfully received. The time adjustment means for correcting the current time of the time measuring means based on the time information included in the standard radio wave, and the frequency selection order are stored. And the reception selection means selects a first frequency stored in the selection order storage means and receives a radio wave, and a first frequency. The standard frequency of the other frequency is sequentially received, the optimum frequency detection unit for detecting the frequency with the best radio wave reception conditions, and the reception condition of the frequency detected by the optimum frequency detection unit is higher than the first frequency. When the frequency is good, it functions as a first frequency setting unit that sets the frequency to the first frequency of the selection order storage means.
[0120]
A recording medium according to a tenth aspect is a computer-readable recording medium that records a control program for a radio-controlled timepiece according to the fourth to ninth aspects.
[0121]
【The invention's effect】
As described above, according to the radio-controlled timepiece and the control method thereof of the present invention, different types of standard radio waves can be received and time can be automatically adjusted in each region, and reception operation can be performed efficiently and energy saving. And operability can be improved.
[Brief description of the drawings]
FIG. 1 is a front view showing a radio-controlled timepiece according to a first embodiment of the present invention.
FIG. 2 is a block diagram showing a configuration of a timepiece according to the first embodiment.
FIG. 3 is a time code format of a long wave standard radio wave (JJY).
FIG. 4 is a time code format of a long wave standard radio wave (DCF77).
FIG. 5 is a time code format of a long wave standard radio wave (MSF).
FIG. 6 is a block diagram illustrating a configuration of a control circuit according to the first embodiment.
FIG. 7 is a diagram illustrating a data structure of a user setting order storage unit according to the first embodiment.
FIG. 8 is a diagram illustrating a data structure of a distance order storage unit according to the first embodiment.
FIG. 9 is a diagram illustrating a data structure of a history order storage unit according to the first embodiment.
FIG. 10 is a diagram showing a data structure of a reception target station information storage unit of the first embodiment.
FIG. 11 is a flowchart showing the operation of the control circuit of the first embodiment.
FIG. 12 is a block diagram illustrating a configuration of a control circuit according to a second embodiment.
FIG. 13 is a diagram illustrating a data structure of a first station and other station search order storage unit of the second embodiment.
FIG. 14 is a flowchart showing the operation of the control circuit of the second embodiment.
FIG. 15 is a block diagram illustrating a configuration of a control circuit according to a third embodiment.
FIG. 16 is a flowchart showing the operation of the control circuit of the third embodiment.
FIG. 17 is a block diagram illustrating a configuration of a control circuit according to a fourth embodiment.
FIG. 18 is a diagram illustrating a data structure of a user setting order storage unit according to the fourth embodiment.
FIG. 19 is a diagram illustrating a data structure of an order storage unit by frequency according to the fourth embodiment.
FIG. 20 is a diagram illustrating a data structure of a history order storage unit according to the fourth embodiment.
FIG. 21 is a diagram illustrating a data structure of a reception target station number order storage unit according to the fourth embodiment;
FIG. 22 is a flowchart showing the operation of the control circuit of the fourth embodiment.
FIG. 23 is a flowchart showing the operation of the control circuit of the fourth embodiment.
FIG. 24 is a block diagram showing a configuration of a first modified example of the present invention.
FIG. 25 is a block diagram showing a configuration of a second modified example of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Radio wave correction clock, 2 ... Hour hand, 3 ... Minute hand, 5 ... Dial, 6 ... Scale, 7 ... Pointer, 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 division circuit, 53: Time counter, 54: Comparison circuit , 55 ... time correction control section, 56 ... received radio wave determination means, 57 ... reception frequency switching means, 60 ... reception selection means, 61 ... first reception station selection reception section, 62 ... reception station sequential selection reception section, 63 ... optimum Station detection unit, 64 ... Optimal station selection reception unit, 70 ... Selection order storage means, 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 Receiving means 161 ... first frequency selection receiving unit 162 ... frequency sequential selection receiving unit 163 ... optimum frequency detection unit 164 ... optimum frequency selection receiving unit 171 ... user setting order storage unit 172 ... order storage unit by frequency 173 ... History order storage unit, 174 ... Receiving target station number order storage unit, 175 ... First frequency & other frequency search order storage unit, 221 ... Tuning circuit.

Claims (4)

A time measuring means for inputting a reference signal from a reference signal source and measuring the current time;
A receiving means for receiving a standard radio wave including time information;
A reception selection means for selecting a reception frequency when receiving a standard radio wave of each standard radio wave output station that outputs various standard radio waves having different frequency and time information formats;
Reception frequency switching means for switching the reception frequency of the reception means to the frequency selected by the reception selection means;
A received radio wave judging means for judging whether or not the standard radio wave has been successfully received;
A time correcting means for correcting the current time of the time measuring means based on the time information included in the standard radio wave when it is determined that the standard radio wave has been successfully received;
Selection order storage means for storing the selection order of the frequency,
The reception selection unit is configured to select a first frequency stored in the selection order storage unit and receive a radio wave;
When it is determined that the reception of radio waves at the first frequency selective reception unit has failed, the standard radio waves are successfully received according to the selection order stored in the selection order storage means, or all the stored frequencies are selected. A frequency sequential selection receiving unit that sequentially selects a reception frequency and receives radio waves until it is finished,
The order of the frequencies stored in the selection order storage means is set in an order in which the number of standard radio wave output stations of the frequency is large among the frequencies other than the first frequency,
The radio-controlled timepiece according to claim 1, wherein when the standard radio wave is successfully received at a frequency other than the first frequency, the selection order storage unit resets the frequency that has been successfully received to the first frequency . The radio-controlled timepiece according to claim 1,
The reception signal evaluation unit analyzes the radio wave time information received on the basis of the time information format of each standard radio wave output station corresponding to the selected frequency, whether in standard radio correct time information is obtained A radio-controlled clock characterized by determining success or failure of reception. In the radio-controlled timepiece according to claim 1 or 2,
A radio-controlled timepiece comprising display means for displaying a reception target station that has successfully received a standard radio wave. First frequency reception step of performing at least one of reception of the first standard radio frequency set in advance from among the reception frequency corresponding to each standard radio wave output station for outputting the various different standard radio frequency and time information format When,
When the reception of the standard radio wave fails in the first frequency reception process, the standard radio waves of other frequencies in the preset order until the standard radio wave is successfully received or all the prepared frequencies are selected. The other frequency receiving process of sequentially receiving,
Upon successful reception of the standard radio wave at another frequency reception step, a first frequency setting step of setting the frequency to the first frequency,
Upon successful reception of the standard radio wave at the first frequency reception process or other frequency receiving step, Bei example a time correction step of correcting, based the current time of the clock means to time information of the standard radio to display time, the ,
An order of the frequency preset in the frequency receiving step is set in an order in which the number of standard radio wave output stations of the frequency is large among frequencies other than the first frequency . Control method.

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