JP2006090770A - Time data receiving device, time data receiving control program, and method for controlling time data receiving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To more reliably correct time data on a regular basis.
When any hour from 0 o'clock to 23 o'clock is reached, time data is received three times at 1 minute intervals (S103), and whether or not the alignment of the time data received three times is OK. Is determined (S104). If it is OK, the reception status data is stored in the area corresponding to the current hour in the reception status storage table (S106). If the consistency judgment is NG, the time data is received once more (S107), the consistency is judged (S108), and if it is not OK, the reception is repeated 6 times (S109). If the consistency determination in S108 is OK, the process in S106 is executed in the same manner. Based on the reception status data, the order of the correct hour that can be received is given (S114). The first to third times are stored in M1 to M3 of the reception time setting table (S115), the standard time radio wave is received at the times M1 to M3, and the time data is corrected.
[Selection] Figure 4

Description

  The present invention relates to a time data receiving device, a time data receiving control program, and a method for controlling the time data receiving device.

Today, in each country, standard time radio waves including time data are transmitted, and so-called radio clocks that receive standard time radio waves including such time data and thereby correct the current time data are put to practical use. It has become. The radio timepiece receives a standard time radio wave via a built-in antenna at predetermined time intervals, corrects the current time by amplifying and modulating the time data. However, it is not preferable to always receive the standard time radio wave because of the relationship with the battery life, and since there is no need to always adjust the time, the standard time radio wave is received and the time is corrected a predetermined number of times a day. At this time, since it is preferable to receive in the night with little noise, for example, reception of the standard time radio wave and time correction are performed at 2 am and 4 am (see, for example, Patent Document 1).
JP 9-43368 A

  However, which time zone is the time zone with the least noise is not uniquely determined, and differs depending on the environment in which the radio clock is present, and the time zone with the least noise is not always the night. Therefore, if the reception time of the standard time radio wave is fixed, depending on the environment in which the radio clock is present, it may not be possible to transmit the standard time radio signal over a long period of time. It becomes difficult to demonstrate.

  The present invention has been made in view of such a conventional problem, and provides a time data receiving device, a time data receiving control program, and a time data receiving device control method capable of correcting time data more reliably and on a regular basis. The purpose is to provide.

  In order to solve the above-mentioned problem, the time data receiving apparatus according to the first aspect of the present invention is a time measuring means for generating current time data, and receiving the radio wave including the time data to obtain the time data. And a detection means for detecting a reception state of radio waves including time data of the reception means at a plurality of times, and a predetermined number of good reception states among the plurality of times based on a predetermined condition. Setting means for setting the time as the time correction time, and when the reception means receives the radio wave at a predetermined number of times set by the setting means, and when the time data is obtained, based on the time data, Time correction means for correcting current time data of the time measuring means.

  That is, in such a time data receiving device, the time correction time is not fixedly set, but the reception state of the radio wave including the time data of the receiving means at a plurality of times is detected, and predetermined conditions are set. Based on the above, a predetermined number of times with a good reception state detected from a plurality of times is set as the time correction time. Therefore, a predetermined number of times with good reception states are variably set as the time correction time according to the environment where the time data receiving apparatus exists. Then, the radio wave is received at the variably set time correction time, and the current time data of the time measuring means is corrected based on the obtained time data.

  In the time data receiving device according to the second aspect of the present invention, a determination means for determining whether or not there is a time at which time data cannot be obtained among the predetermined number of times, and this determination When the means determines that there is a time at which the time data cannot be obtained, a correction means for setting a time when the reception state is good next as the time correction time is provided. Therefore, when there is a time at which time data cannot be obtained, a radio wave including time data is more reliably received at the time adjustment time by setting the time with the next best reception state as the time adjustment time. be able to.

  Further, in the time data receiving device according to the third aspect of the invention, the setting means makes the receiving means receive radio waves at the plurality of times, and determines the priority ranking of the reception state at each time And a selection means for selecting a predetermined number of times having a high priority from the plurality of times based on the determination result of the determination means. Accordingly, it is possible to set a predetermined number of times with a good reception state with accuracy as a time adjustment time from among a plurality of times.

  Further, in the time data receiving device according to the invention of claim 4, the plurality of times are each on the hour. Therefore, a predetermined number of times can be set as the time adjustment time from 24 times that are equally divided in one day, so that the time reception environment (24-hour reception environment) of the time data reception device is the most suitable. A predetermined number of times with good reception can be set as the time adjustment time

  In the time data receiving apparatus according to the fifth aspect of the invention, the determining means determines whether or not there is a time during which the time data cannot be obtained within a predetermined period. Therefore, it is possible to quickly determine whether or not there is a time at which the time data cannot be obtained under the time limit condition.

  According to a sixth aspect of the present invention, there is provided a time data reception control program, comprising: a time measuring means for generating current time data; and a receiving means for receiving radio waves including the time data and obtaining the time data. A computer having a time data receiving device is configured to detect a reception state of a radio wave including time data of the reception unit at a plurality of times and a reception state from the plurality of times based on a predetermined condition. A setting means for setting a predetermined number of times with good time as the time correction time, and when the reception means receives the radio wave at the predetermined number of times set by the setting means, and the time data is obtained. Based on the time data, it functions as time correction means for correcting the current time data of the time measuring means. Therefore, when the computer executes processing according to this program, the same effects as those of the first aspect of the invention can be obtained.

  Further, in the time data reception control program according to the invention of claim 7, further, a discriminating means for discriminating whether or not there is a time at which time data cannot be obtained among the predetermined number of times, and this When it is determined by the determination means that there is a time at which the time data cannot be obtained, it is made to function as a correction means for setting a time when the reception state is good next as the time correction time. Therefore, when the computer executes processing according to this program, the same effects as those of the invention of claim 2 are obtained.

  In addition, in the control method of the time data receiving device according to the invention described in claim 8, the time measuring means for generating the current time data, and the receiving means for receiving the radio wave including the time data and obtaining the time data A method for controlling a time data receiving apparatus comprising: a detecting step for detecting a reception state of radio waves including time data of the receiving means at a plurality of times; and a plurality of times based on a predetermined condition. A setting step for setting a predetermined number of times with good reception conditions as the time adjustment time, and causing the receiving means to receive the radio wave at the predetermined number of times set by the setting step, thereby obtaining the time data. And a time correction step of correcting the current time data of the time measuring means based on the time data. Therefore, by performing the processing according to the described steps, the same effects as those of the first aspect of the invention can be obtained.

  Further, in the control method of the time data receiving device according to the invention of claim 9, a determination step for determining whether or not there is a time at which time data cannot be obtained among the predetermined number of times; Then, in this determination step, when it is determined that there is a time at which the time data cannot be obtained, a correction step of setting a time when the reception state is good next as the time correction time is included. Therefore, by performing the processing according to the described steps, the same effects as those of the second aspect of the invention can be achieved.

  As described above, according to the first, sixth, and eighth aspects of the invention, a predetermined number of times with good reception conditions are variably set as the time adjustment time according to the environment in which the time data receiving apparatus exists. The radio wave is received at the variably set time correction time, and the current time data of the time measuring means can be corrected based on the obtained time data. Therefore, no matter what time reception environment the time data reception device exists in, it is possible to receive radio waves including time data at the time adjustment time, and to correct time data more reliably. Is possible.

  According to the second, seventh, and ninth aspects of the invention, if there is a time at which time data cannot be obtained, the time with the next best reception state is set as the time correction time. In addition, it is possible to receive radio waves including time data at the time correction time, thereby making it possible to make time corrections more reliably.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a circuit configuration of a radio timepiece according to an embodiment of the present invention. As shown in the figure, this circuit is configured with the CPU 1 as the center, and the CPU 1 controls each unit by operating based on a program stored in the ROM 2. The RAM 3 is provided with a work area used when the CPU 1 operates and a table for storing various data as will be described later.

  The antenna 4 receives long-wave standard time radio waves each having a different frequency for each transmitting station that has amplitude-modulated time data in a predetermined format transmitted from a transmitting station provided at a predetermined place, and an electric signal corresponding to this This is a circuit section for sending to the receiving circuit 5. The receiving circuit 5 selects and receives a signal having a specific frequency from the electric signal from the antenna 4 in accordance with an instruction from the CPU 1, obtains time data from the signal, and sends it to the CPU 1.

  The oscillation circuit 6 is a circuit unit that constantly sends a clock signal having a constant frequency. When the frequency dividing circuit 7 counts the clock signal from the oscillation circuit 6 and the count value becomes a value corresponding to 1 second, it sends a 1 second signal to the clock counting circuit 8 and receives a preset signal from the CPU 1. , A circuit unit whose count value is reset to a predetermined value. The clock counting circuit 8 counts the 1 second signal from the frequency dividing circuit 7, and obtains current time data, that is, current date data, current day of the week data, current time data, current minute data, and current second data. This is a circuit that gives this to the CPU 1 and corrects the counted current time data with the time data from the CPU 1.

  The switch unit 9 includes a switch for setting a mode, which will be described later in a flowchart, and other switches, and an operation signal for each switch is sent to the CPU 1. The display unit 10 displays the data from the CPU 1, that is, the current time and various data by the clock counting circuit 8.

The RAM 3 is provided with a reception status storage table 31 shown in FIG. 2 and a reception time setting table 32 shown in FIG. 3 together with the work area. The reception status storage table 31 shown in FIG. 2 includes a reception time storage area 31a, a reception status data storage area 31b, a rank storage area 31c, and a reception availability storage area 31d. The reception time storage area 31a stores in advance the reception times for each hour from 0 o'clock to 23:00, and the reception status data storage area 31b stores the reception status for the first day, 2 An area for storing the reception status of the day is provided. Here, the reception status data is the following value when a standard time radio wave including time data of the predetermined format is received a plurality of times at 1 minute intervals.
If reception is successful in 3 minutes, reception status data = 0
If reception is successful in 4 minutes, reception status data = 1
If reception is successful in 5 minutes, reception status data = 2
If reception is successful in 6 minutes, reception status data = 3
If reception is unsuccessful, reception status data = 4
Further, the rank storage area 31c stores the rank in the order of good reception status based on the reception status data, and the reception availability storage area 31d stores either the reception enabled code “◯” or the reception disabled code “×”. Is done.

  The reception time setting table 32 shown in FIG. 3 is provided with a reception time storage area 32a and a reception failure consecutive number storage area 32b corresponding to the memory numbers M1, M2, and M3. The reception time storage area 32a stores a reception time that is a better reception situation, and the reception failure continuous count storage area 32b stores the number of consecutive reception failures at the reception time.

  In the present embodiment having the above configuration, when the user operates the switch unit 9 to set the reception status detection mode, the CPU 1 executes the processing shown in the flowchart of FIG. 4 based on the program stored in the ROM 2. To do. That is, it is determined whether or not any hour from 0 o'clock to 23 o'clock has been reached (step S101). When the hour comes, the reception circuit 5 is controlled to start reception of the standard time radio wave (step S102), and time data is received three times at 1 minute intervals (step S103). Next, it is determined whether or not the matching of the time data received three times at 1 minute intervals is OK (whether there is consistency) (step S104). As the consistency determination in step S104, for example, the value of each digit of the time data included in the received standard time radio wave is a value that actually exists, or three time data received at 1-minute intervals. It is determined whether or not there is a shift by 1 minute.

  Then, if the consistency determination in step S104 is OK and reception is successful, in the reception status storage table 31 shown in FIG. 2, the receivable code is stored in the reception availability storage area 31d corresponding to the current hour. “◯” is stored (step S105). Further, in the reception status data storage area 31b corresponding to the current hour in the reception status storage table 31, if the current reception is the first day, the first day area, if the second reception, the second day area. The reception status data is stored (step S106). At this time, if the reception is successful in 3 minutes as described above, the reception status data = 0, and if the process proceeds from step S104 → S105 → S106, the reception is successful in 3 minutes. “0” is stored in the reception status data storage area 31b.

  On the other hand, if the consistency determination in step S104 is not OK, the time data is received once more after one minute from the previous reception (step S107), and the consistency of three data among the received time data. It is determined whether or not is OK (step S108). The consistency determination in step S108 is also performed in the same manner as the consistency determination in step S104 described above.

  If the consistency determination in step S108 is not OK, it is determined whether or not the time data has been received a total of six times including the three receptions in step S103 (step S109). If it has not been received twice, the processing from step S107 is executed again. As a result, if the consistency judgment in step S108 is OK, the receivable code “◯” is stored in the reception availability storage area 31d corresponding to the current hour in the reception status storage table 31, as described above. In addition, in the reception status data storage area 31b, the reception status data is stored in the first day area if the current reception is the first day, and in the second day area if the current reception is the second day. (Step S106). In this case, since reception is successful in any of 4 minutes, 5 minutes, and 6 minutes, any of “1”, “2”, and “3” is stored in the reception status data storage area 31b as reception status data. Will be.

  However, if the consistency judgment is not OK even if the time data is received six times in total (step S109; YES), in the reception status storage table 31, the reception availability storage area 31d corresponding to the current hour is stored. In the reception status data storage area 31b, if the current reception is the first day, the first day area is stored in the reception status data storage area 31b, and the second day is the second day. The reception status data is stored in the area (step S111). In this case, since the reception is unsuccessful, “4” is stored in the reception status data storage area 31b as the reception status data as illustrated in the column “23:00” in FIG. The reception impossible code “×” is stored in 31d.

  In step S112 following step S111 and step S106, the receiving circuit 5 is controlled to stop receiving time data. Further, it is determined whether or not reception for two days has been completed since the first reception in step S102 (step S113), and the processes of steps S101 to S112 are repeated until reception for two days is completed. Therefore, in the present embodiment, reception of time data is performed 3 to 6 times at 1 minute intervals every two hours for 2 days, and it corresponds to all of 0 to 23:00 as shown in FIG. Then, the reception status data “0” to “4” are stored in “1st day” and “2nd day” of the reception availability storage area 31d, and the reception availability code “◯” is stored in the reception availability storage area 31d. Alternatively, the reception impossible code “×” is stored.

  After that, the order of the correct hour that can be received based on the reception status data is given (step S114). That is, in the reception status storage table 31 shown in FIG. 2, the reception status data at “3 o'clock” is “0” on both the first and second days, and the value of the reception status data is the best. The rank “1” is stored. Since the next best reception status data value is “0”, “1”, “2 o'clock”, the rank “2” is stored in the rank storage area 31c, and the rank 1 is set in the same manner. Remember ~ 7. If the values of the reception / reception status data are the same, the one with the earlier time may be given the higher rank.

  Further, the first to third times are stored in M1 to M3 of the reception time setting table 32 (step S115). Therefore, in the case of the example shown in FIG. 2, the first to third times are “3 o'clock”, “2 o'clock”, and “4 o'clock”. Therefore, as shown in FIG. , “2 o'clock” is stored in M2, and “4 o'clock” is stored in M3.

  When the user operates the switch unit 9 to cancel the reception status detection mode and return to the normal mode, the CPU 1 executes the process shown in the flowchart of FIG. 5 based on the program stored in the ROM 2. That is, it is determined whether or not the time stored in M1 to M3 has been reached (step S201). If any of the times is reached, the reception circuit 5 is controlled to receive the standard time radio wave (step S201). S202). Next, it is determined whether or not the reception is successful based on whether or not the time data is obtained by this reception (step S203). If the reception is successful, the current time counted by the clock counting circuit 8 is corrected according to the time indicated by the time data (step S204), and the reception corresponding to the MI received this time in the reception time setting table. The unsuccessful consecutive number storage area 32b is reset and the unsuccessful consecutive number is set to “0” (step S205).

  If the reception is unsuccessful as a result of the determination in step S203, the value of the reception failure continuous number storage area 32b corresponding to the MI received this time in the reception time setting table is incremented, +1 "(step S206). Next, it is determined whether or not the number of unsuccessful times, which is the value of the continuous reception failure number storage area 32b, exceeds a specific number (step S207). However, when the number of unsuccessful times exceeds a specific number, the next best reception status is stored in the MI based on the rank stored in the rank storage area 31c (step S208).

  That is, as shown in FIG. 3, the number of consecutive unsuccessful times for M3 “4 o'clock” is “3”, and the specific number in step S207 is unsuccessful for two days (predetermined period). Is “2” indicating “3> 2”, the determination in step S207 is YES. At this time, since the times 1 to 3 are stored in the reception time setting table 32, the next best reception status in the reception status storage table 31 shown in FIG. "1 o'clock". Therefore, instead of “4 o'clock” stored in M3 shown in FIG. 3A, the reception time storage area 32a of M3 is rewritten to “1 o'clock” as shown in FIG. In the reception time setting table, the reception failure continuous number storage area 32b corresponding to the MI rewritten in step S208 is reset, and the number of consecutive failures is set to “0” (step S209).

  Therefore, every time the number of unsuccessful receptions of time data reaches a specific number, M1 to M3 store the time when the reception status is good next, and each day of M1 to M3 including the new time 3 Times of standard time radio waves are received and the time is corrected.

  In the present embodiment, in the reception status detection mode process shown in FIG. 4, the time is not adjusted based on the received time data, but the determination in step S104 is YES and there is consistency. In this case, the time may be adjusted with the received time data. As a result, the time can be corrected even during the two days when the reception status detection mode is set.

It is a block circuit diagram showing an embodiment of the present invention. It is a conceptual diagram of the reception condition storage table provided in RAM. It is a conceptual diagram of the reception time setting table provided in RAM. It is a flowchart which shows the process sequence at the time of reception condition detection mode. It is a flowchart which shows the process sequence at the time of normal mode.

Explanation of symbols

1 CPU
2 ROM
3 RAM
4 antenna 5 receiving circuit 8 clock counting circuit 9 switch unit 10 display unit 31 reception status storage table 31a reception time storage region 31b reception status data storage region 31c rank storage region 31d reception availability storage region 32 reception time setting table 32a reception time storage region 32b Number of consecutive reception failures

Claims (9)

A timekeeping means for generating current time data;
Receiving means for receiving radio waves including time data and obtaining the time data;
Detecting means for detecting a reception state of radio waves including time data of the receiving means at a plurality of times;
Based on a predetermined condition, a setting means for setting a predetermined number of times having a good reception state as the time correction time from the plurality of times,
A time correction that corrects the current time data of the time measuring means based on the time data when the receiving means receives the radio wave at the predetermined number of times set by the setting means and the time data is obtained. Means,
A time data receiving device comprising: And determining means for determining whether or not there is a time at which time data cannot be obtained among the predetermined number of times;
The correction means for setting a time when the reception state is good next as the time correction time when the determination means determines that there is a time at which the time data cannot be obtained. The time data receiving device according to 1. The setting means is configured to cause the receiving means to receive radio waves at the plurality of times, and to determine a ranking of reception status at each time;
3. The time data receiving apparatus according to claim 1, further comprising: a selecting unit that selects a predetermined number of times with high priority from the plurality of times based on a determination result of the determining unit.   4. The time data receiving apparatus according to claim 1, wherein the plurality of times are each on the hour.   3. The time data receiving apparatus according to claim 2, wherein the determination unit determines whether there is a time when the time data cannot be obtained within a predetermined period. A computer having a time data receiving device comprising time measuring means for generating current time data and receiving means for receiving radio waves including the time data and obtaining the time data;
Detecting means for detecting a reception state of radio waves including time data of the receiving means at a plurality of times;
Based on a predetermined condition, a setting means for setting a predetermined number of times having a good reception state as the time correction time from the plurality of times,
A time correction that corrects the current time data of the time measuring means based on the time data when the receiving means receives the radio wave at the predetermined number of times set by the setting means and the time data is obtained. A time data reception control program that functions as means. And determining means for determining whether or not there is a time at which time data cannot be obtained among the predetermined number of times;
2. When the determination unit determines that there is a time at which the time data cannot be obtained, the determination unit functions as a correction unit that sets a time when the reception state is good next as the time correction time. 6. The time data reception control program according to 6. A control method of a time data receiving device comprising a time measuring means for generating current time data and a receiving means for receiving radio waves including the time data and obtaining the time data,
A detection step of detecting a reception state of radio waves including time data of the receiving means at a plurality of times;
A setting step of setting a predetermined number of times in a good reception state as a time correction time from the plurality of times based on a predetermined condition;
A time correction that corrects the current time data of the time measuring means based on the time data when the receiving means receives the radio wave at the predetermined number of times set in the setting step and the time data is obtained. And a time data receiving device control method. And a determination step of determining whether or not there is a time for which time data cannot be obtained among the predetermined number of times;
And a correction step of setting a time when the reception state is good next as the time correction time when it is determined that there is a time at which the time data cannot be obtained. 8. A method for controlling a time data receiving device according to 8.

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