JP3361261B2 - Clock with time adjustment function - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timepiece having a time adjustment function.

[0002]

2. Description of the Related Art Conventionally, there is known a timepiece having a time adjustment function, which uses an hourly signal of an FM radio as a time timing signal and adjusts the time based on the time timing signal.

The configuration will be briefly described with reference to FIG.

In FIG. 1, a timepiece driver 101 has a crystal oscillator 102 that outputs a reference clock signal and an internal timepiece that measures time based on the reference clock.
Control circuit 103 including PU, ROM, RAM, etc.
The time display unit 104 includes a clock display driver 105 for displaying the time based on the clocked time of the internal clock in the control circuit 103. The FM radio receiving unit 106
An FM radio receiver 107, an hourly time signal detector 108 for detecting an hourly time signal from the received FM radio signal, and the like,
It is driven intermittently under the control of the timepiece driver 101.

The operation will be briefly described with reference to FIG.

In this example, the FM radio receiving unit 10
It is assumed that 6 is set to detect the hourly signal at 7 am once a day by the control of the timepiece driver 101.

When the time measured by the internal clock in the control circuit 103 is 15 seconds before 7:00 AM, that is, at 6:59:45 AM, the control circuit 103 supplies power to the FM radio receiving unit 106, and the FM radio receiving unit 106 is powered. Receiving unit 1
06 starts receiving the FM radio signal (step 6)
a, 6b). When the hour signal is detected by the hour signal detector 108, a correction (synchronization) signal is output to the timepiece driver 101, and the control circuit 103 corrects the time of the internal timepiece based on this signal and the FM radio receiving unit. The power supply to 106 is stopped (steps 6c, 6d, 6e). If it is 7:00:15 AM when the hourly report cannot be detected,
The time is not adjusted and the power supply to the FM radio receiving unit 106 is stopped (steps 6c, 6f, 6e).

[0008]

When detecting a time timing signal such as an hourly signal from radio waves as described above,
If noise occurs during the operation period of the receiving unit, erroneous detection occurs, and the time is wrong.

In particular, when the hourly signal is detected using a signal such as an FM radio signal in which voice and music are also transmitted, the voice or the like may cause erroneous detection.

In the conventional system, even if noise or the like is erroneously detected as a true time signal before the true time signal, the time of the internal clock is always corrected at the timing of the erroneous detection, and in some cases, the clock is corrected. There is a risk of falling into a state of rapid progress.

If the operating period of the receiving unit is extremely narrowed in order to avoid this erroneous detection, the next hour signal cannot be detected unless the time of the internal clock is almost accurate. That is, when the operating period of the receiving unit is short and the time of the internal clock is greatly deviated, the operating period of the receiving unit deviates from the hourly time and the hourly time cannot be detected. Therefore, accurate time input is required when manually setting the time at the start of operation of the internal clock. That is, in the case of the conventional one, a wristwatch or the like worn by the operator can be initially set, but the setting must be made while confirming the time on the telephone, for example, and the initial setting operation becomes troublesome. . Further, if the time cannot be adjusted for a long period of time due to the influence of the radio wave condition, etc., the operating period of the receiving unit may deviate from the hourly time depending on the degree to which the internal clock goes wrong.

Further, if the operating period of the receiving unit is made extremely long in order to avoid the above problem, it becomes susceptible to noise as described above, and further power for operating the receiving unit is required.

[0013]

According to the present invention , control means is provided.
However, when a plurality of time timing signals are detected during one power supply time to the receiving means, the reception result of the time timing signal by the receiving means is determined to be an erroneous detection. Even when this signal is detected as the time timing signal, the next power supply time width of the receiving means can be optimized.

When the control means detects a plurality of time timing signals during one power supply time to the receiving means, it lengthens the next power supply time width of the receiving means, so that the real time timing is caused by noise or the like. Even when a signal other than the signal is detected as the time timing signal, it is possible to prevent the operating period of the receiving unit from deviating from the hourly time.

Receiving means capable of receiving the time timing signal, and control means for intermittently supplying power to the receiving means.
And a time adjustment function timepiece having time adjustment means for adjusting the display time according to the time timing signal received by the reception means, a timer for starting the operation according to the detection timing of the time timing signal. And the time adjustment means is provided when the power is supplied once to the reception means.
If the above time timing signal is detected only once during the period, the above displayed time is corrected according to the content of the timer.
However, if the power is supplied to the receiving means once at a plurality of times,
When the clock timing signal is detected, the above display time is corrected
It does not, without time correction if there is a high possibility that erroneous detection can be prevented erroneous time correction.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present application comprises a receiving means capable of receiving a time timing signal, and a time adjusting means for adjusting the display time according to the time timing signal received by the receiving means. intermittently have line power supply to said receiving means, based on the reception result of the previous time timing signal by said receiving means, and a next that control means to control the power supply duration of said receiving means , The control means
Is a plurality of times during one power supply time to the receiving means.
When the time signal is detected,
It is assumed that the reception result of the timed timing signal is judged as a failure .

The invention according to claim 2 of the present application comprises receiving means capable of receiving a time timing signal, time adjusting means for adjusting the display time according to the time timing signal received by the receiving means, and intermittently. Power is supplied to the receiving means.
There, based on the reception result of the previous time timing signal by said receiving means, and a next that control means to control the power supply duration of said receiving means, said control means, said
Multiple time timings can be applied during one power supply time to the receiving means.
Next power supply to the receiving means when a ringing signal is detected
It is supposed to lengthen the time width .

The invention according to claim 3 of the present application comprises a receiving means capable of receiving a time timing signal and the receiving means intermittently.
In a timepiece with a time adjustment function , which comprises a control means for supplying power to the stage and a time adjustment means for adjusting the display time according to the time timing signal received by the receiving means,
A timer that starts operating in response to the detection timing of the time timing signal, said time correction means, the receiving
When the time timing signal is detected only once during the time when the power is supplied to the receiving means, the display time is corrected according to the timed content of the timer, and once the time is supplied to the receiving means.
Detect multiple time-timing signals during the power supply time of
If it does, the above display time is not corrected .

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below based on the embodiments shown in the drawings. In this example, the present invention is applied to a timepiece with a time adjustment function that detects an hourly signal included in an FM radio signal, specifically, an hourly signal at 7 am as a time timing signal and corrects the time.

( Reference Example ) In FIG. 1, reference numeral 1 is an FM radio receiving unit which constitutes a receiving means, and includes an antenna 11 and an antenna F.
The M radio receiver 12 and the hourly signal detector 13 are included. The FM radio receiver 12 and the hourly signal detector 13 are
It has the same configuration as that described in the conventional example. The timepiece drive unit 2 includes a crystal oscillator 21, a control circuit 22 that constitutes time adjustment means and control means, a timepiece display driver 23, and the like. The control circuit 22 includes a CPU, a ROM, a RAM, and the like, has an internal clock, and controls various operations. The crystal oscillator 21 and the clock display driver 23 have the same configuration as that described in the conventional example, the crystal oscillator 21 outputs the reference clock signal, and the clock display driver 23 controls the time display 3 to the control circuit 22. Display the time based on the clocked time of the internal clock inside.

In the reference example , the power supply time width to the FM radio receiving unit 1 is automatically changed based on the reception result of the previous hourly report. Specifically, the RI received in the RAM in the control circuit 22 is the reception result of the previous hourly report.
This is reflected in a variable called REKI, and the value of that value determines the time width of power supply to the next FM radio receiving unit 1. In the case of RIREKI = 0, the power supply time width to the FM radio receiving unit 1 is set to maximum AM 7 o'clock ± 1/2 minutes, and in the case of RIREKI = 1, maximum AM 7 o'clock ±
15 seconds 30 seconds, maximum AM7 when RIREKI = 2
The time is ± 5 seconds, which is 10 seconds. RIREK when starting operation
I = 0, the power supply time width to the FM radio receiving unit 1 is set to maximum AM 7 o'clock ± 1/2 minutes, and thereafter RIREKI is increased or decreased between 0 and 2 based on the reception result of the hourly signal, The power supply time width to the FM radio receiving unit 1 is controlled according to the value.

The operation will be described below with reference to FIG.

In the initial state, the value of the variable RIREKI provided in the control circuit 22 is set to 0 (step 2a).

In this state, that is, in the state of RIREKI = 0, the internal clock in the control circuit 22 is AM 6:59 0.
At 0 second, the control circuit 22 starts supplying power to the FM radio receiving unit 1 and starts detecting the hourly signal at 7 am (steps 2b, 2c, 2d).

In this case, RIREKI = 0, so FM
Maximum power supply to the radio receiving unit 1 is 7:00 AM
If the hour signal of AM7 is detected during this time, the control circuit 22 corrects the time of the internal clock in the control circuit 22 according to the detected hour signal of AM7, and the FM signal is received. The power supply to the radio receiving unit 1 is stopped (steps 2e, 2f, 2g, 2h, 2i, 2j, 2).
k, 2m). When the time of the internal clock in the control circuit 22 is corrected, the clock display driver 23 causes the time display unit 3 to display the corrected time of the internal clock in the control circuit 22 accordingly.

Thus, when RIREKI = 0, A
The power is supplied to the FM radio receiving unit 1 from M6: 59: 00 and the detection of the hourly signal is started, and the maximum AM is 7:01:00. During this time, if the hour signal at 7 am is detected, the time of the internal clock in the control circuit 22 is corrected and F
The power supply to the M radio receiving unit 1 is stopped.

When the hourly signal at 7:00 AM is detected and the time is corrected and the power supply to the FM radio receiving unit 1 is stopped (steps 2e, 2k, 2m), the control circuit 22 causes the AM to operate.
The reception result of the hourly report at 7:00 is judged to be successful, and the next FM
Processing for shortening the power supply time width to the radio receiving unit 1 by one step is performed. Specifically, if RIREKI is smaller than the maximum value 2, 1 is added to the value and RIRKI is added.
When EKI = 2, it remains at 2 (step 2n,
2p). The procedure then returns to step 2b.

In the case of RIREKI = 0, if the hour signal of AM7 is not detected by AM7: 01: 00 (step 2j), the power supply to the FM radio receiving unit 1 is stopped (step 2q).

When the power supply to the FM radio receiving unit 1 is stopped without detecting the hourly signal at 7:00 AM (step 2q), the control circuit 22 judges that the result of receiving the hourly signal at 7:00 AM is unsuccessful, and the next time. The processing for increasing the power supply time width to the FM radio receiving unit 1 by one step is performed. Specifically, if RIREKI is greater than the minimum value 0,
Subtract 1 from the value and keep 0 when RIREKI = 0 (steps 2r, 2s). Step 2 below
Return to b.

In step 2b, if RIREKI = 0 in step 2b as a result of the previous reception, the same operation as described above is performed.

In step 2b, if RIREKI = 1 as a result of the previous reception, power is supplied to the FM radio reception unit 1 from 6:59:45 AM to start detection of the hour signal, and the maximum AM7 is detected. Perform up to hour 00 minutes 15 seconds (steps 2b, 2c, 2t, 2u, 2d-2)
h). During this time, if the hourly signal at 7 am is detected, the process proceeds to step 2k, and the same operation is performed thereafter. Also,
If the hourly signal at 7:00 AM is not detected by 7:00:15 AM (Steps 2h and 2i), Step 2q
Then, the same operation as above is performed.

In step 2b, if RIREKI = 2 as a result of the previous reception, power is supplied to the FM radio reception unit 1 from 6:59:55 AM to start detection of the hour signal, and the maximum AM7 is detected. Perform until hour 00:05 (steps 2b, 2c, 2t, 2u, 2v, 2
d-2h). During this time, if the hourly signal at 7 am is detected, the process proceeds to step 2k, and the same operation as described above is performed. Further, when the hour signal of AM 7 is not detected by 7:00:05 AM (steps 2f and 2g), the process proceeds to step 2q, and the same operation as described above is performed.

As described above, when the previous hour signal of AM 7 is detected, it is determined that the internal clock in the control circuit 22 has been corrected to the correct time, and the value of the variable RIREKI is increased to increase the FM radio receiving unit. Shorten the next power supply time width of 1. Therefore, if the hourly signal is successfully received, FM
The time for which the radio receiving unit 1 receives the FM radio signal is shortened, and the influence of noise or the like that may enter during that time can be reduced. If the reception is successful, it is considered that the internal clock in the control circuit 22 has been corrected to the correct time. Therefore, even if the power supply time width of the next FM radio reception unit 1 is shortened, It will occur within that time range, and the hourly signal can be detected next time.

If the previous hourly report at 7 am could not be detected, the value of the variable RIREKI is reduced to FM.
Since the next power supply time width of the radio reception unit 1 is lengthened, it is possible to prevent the operation period of the next FM radio reception unit 1 from deviating from the actual AM 7 o'clock. That is, if the previous hour signal at 7 am could not be detected, it is conceivable that the clocked time of the internal clock in the control circuit 22 is incorrect, and the detection time must be set in order to reliably detect the hour signal at 7 am. It is something to lengthen. In the hourly time detection operation after the start of operation, the FM radio receiving unit 1
Since the power supply time width of the next time is lengthened, even if the initial setting time set in the internal clock in the control circuit 22 at the start of operation is slightly deviated, it is easy to detect the hourly signal at the next detection operation. Therefore, the initial time setting does not require so much accuracy, and the troublesome initial setting can be eliminated.

In this way, the next power supply time width of the FM radio receiving unit 1 can be controlled to an optimum state.

(Embodiment 1 ) Next, Embodiment 1 will be described with reference to FIG. Since the configuration of the first embodiment is the same as that of the reference example , the description thereof will be omitted.

Example 1 is an improved example of the reference example . Differs from the reference example <br/> is that the has stopped the operation of the FM radio receiver unit 1 when the reference example detects a positive time signal,
Included Example 1 during the time determined by the variable RIREKI described above, continues to operate the FM radio receiver unit 1, when detecting a plurality of times positive time signal during its operation, noise in the positive time signal that the detection That is, it is determined that the detection is performed and the detection operation is treated as a failure.

The operation will be described below with reference to FIG. 3 focusing on the difference from the reference example . Note that steps with the same reference numerals as in FIG. 2 are the same steps.

FM determined according to the value of RIREKI
At the time when the power supply to the radio receiving unit 1 starts,
The control circuit 22 has a variable DETE provided in its own RAM.
The value of CT is set to 0 and the power supply to the FM radio receiving unit 1 is started (steps 3a and 2d). The variable DE
TECT is for counting the number of times that the hourly signal at 7 am is detected.

FM determined according to the value of RIREKI
During the power supply time to the radio receiving unit 1, every time the hour signal of 7 am is detected, the time of the internal clock in the control circuit 22 is corrected and 1 is added to the value of DETECT (step 2e). 2k, 3b). Therefore, RI
When the hour signal at 7 am is not detected during the power supply time to the FM radio receiving unit 1 which is determined according to the value of REKI, DETECT = 0, and when detected only once, DETECT = 1, 2 DE if detected more than once
The value of TECT becomes 2 or more.

FM determined according to the value of RIREKI
When the power supply time to the radio receiving unit 1 ends,
The power supply to the FM radio receiving unit 1 is stopped (step 2q), and it is determined whether the value of DETECT is 1 (step 3c).

When the value of DETECT is 1 in step 3c, the control circuit 22 determines that the reception result of the hourly signal at 7:00 AM is successful, and the next power supply time width to the FM radio receiving unit 1 is 1 In order to shorten the number of steps, the processing after step 2n is performed.

If the value of DETECT is not 1 in step 3c, the control circuit 22 judges that the reception result of the hourly signal at 7 am is unsuccessful, and the next power supply time width to the FM radio receiving unit 1 is set to one step. In order to increase the length, the processing from step 2r is performed.

As described above, the second embodiment has the same effect as that of the first embodiment, and when a plurality of hourly signals are detected while the FM radio receiving unit 1 is operating, the detected hourly signals are detected. It is judged that reception has failed because noise is included in. Therefore, even in such a case, it is determined that the clock time of the internal clock in the control circuit 22 may be out of order, the power supply time width to the next FM radio reception unit 1 is lengthened, and the next FM radio reception unit 1 is extended. It is possible to prevent the operating period of the radio receiving unit 1 from deviating from the actual 7:00 AM.

( Second Embodiment) Next, a second embodiment will be described with reference to FIG. The basic configuration of the second embodiment is a reference example and an example.
Since the configuration is the same as that of 1, the description is omitted. In the second embodiment, the control circuit 22 has a timer inside.

The second embodiment is an improved example of the first embodiment, and a big difference from the first embodiment is that the time is corrected every time the hour signal is detected in the first embodiment, whereas the second embodiment is corrected. Each time the time signal is detected, the timer in the control circuit 22 is started,
The point is to correct the time based on the value of the timer when the reception result of the hourly information is judged to be successful by the value of the variable DETECT.

The operation will be described below with reference to FIG. 4 focusing on the difference from the first embodiment. It should be noted that steps having the same reference numerals as those in FIG. 3 are the same steps.

FM determined according to the value of RIREKI
At the time when the power supply to the radio receiving unit 1 starts,
Set the variable DETECT to 0 and FM radio receiving unit 1
After starting the power supply to the AM (steps 3a, 2d), AM
Each time the hour signal of 7 o'clock is detected, 1 is added to the value of DETECT and the timer in the control circuit 22 is started (steps 2e, 3b, 4a).

FM determined according to the value of RIREKI
When the power supply time to the radio receiving unit 1 ends,
The power supply to the FM radio receiving unit 1 is stopped (step 2q), and it is determined whether the value of DETECT is 1 (step 3c).

When the value of DETECT is 1 in step 3c, the control circuit 22 operates AM7 as in the second embodiment.
If the result of the hourly hourly report is judged to be successful, the previous step 4
The time of the internal clock in the control circuit 22 is corrected according to the value of the timer that started the time counting in a. Specifically, when the count value of the timer reaches 120 seconds, the time of the internal clock in the control circuit 22 is corrected to the content of AM 7:02:00.
That is, the value of the timer indicates the elapsed time from 7:00 AM, and the internal clock in the control circuit 22 is corrected according to the elapsed time.

As described above, the time is corrected only when the reception result of the hourly alarm at 7 am is successful, so that the inconvenience of erroneously correcting the internal clock in the control circuit 22 can be solved.

If the value of DETECT is not 1 in step 3c, the process proceeds to step 2r and the same operation as described above is performed.

In the above-mentioned first and second embodiments, the time display unit 3 is not limited to the timepiece which only displays, and may be the time display unit of equipment other than the timepiece equipped with the time display unit.

Further, in all of the above-described embodiments, the hour signal of AM 7 o'clock in the FM radio signal is used as the time timing signal, but the hour signal other than AM 7 o'clock may be used. The hourly report is not limited to the detection from the FM radio signal, and the hourly report obtained from the telephone line or the hourly report obtained from other radio waves may be used.

The time-timing signal is not limited to the hourly report from the radio, but may be any signal that indicates the time-timing of a telephone time information service or the like.

The frequency of detecting the time timing signal is not limited to once a day. For example, it may be detected a plurality of times within one day, or may be detected once in a few days.

Further, the information source for detecting the time timing signal is not limited to one system, and may be selectively detected from multiple systems, or a plurality of time timing signals may be simultaneously detected from the multiple systems. Alternatively, the detection of the time timing signal may be determined by the composite determination of the detection results. In such a case, particularly when the detection of the time-timing signal fails, the information source of the time-timing signal is switched to provide a more reliable system.

The power supply time width to the FM radio receiving unit 1 according to RIREKI is not limited to the above, and may be set so as to change stepwise according to the value of RIREKI.

Further, the number of RIREKI values and the number of steps of the power supply time width to the FM radio receiving unit 1 corresponding thereto are not limited to three steps, and can be appropriately changed. Further, in each of the above embodiments, the initial value of RIREKI is not limited to 0. For example, if it is set to a number smaller than 0, many successes are required until the power supply time width to the FM radio receiving unit 1 is reduced. , Will be a more reliable system.

The time adjustment timing in the second embodiment is not limited to +120 seconds on the hour, but when the power supply to the FM radio receiving unit 1 is within the maximum time width,
It suffices that the power supply is completed.

[0061]

According to the present invention, the next power supply time width of the receiving means can be controlled to an optimum state.

For example, if the reception result of the previous time timing signal is bad, it is considered to be an erroneous detection. Therefore, the next power supply time width of the receiving means is lengthened, and the operation period of the receiving unit deviates from the hourly time. Prevent it from getting lost.
In addition, if the reception result of the previous time timing signal is good, it is considered that accurate time adjustment was performed, so the next power supply time width of the receiving means is shortened to reduce the influence of noise.

When a plurality of time timing signals are detected during one power supply time to the receiving means, the reception result of the time timing signal by the receiving means is judged to be an erroneous detection.
Even when a signal other than the true time-timing signal is detected as the time-timing signal due to noise or the like, the next power supply time width of the receiving means can be optimized.

When a plurality of time-timing signals are detected during one power supply time to the receiving means, the next power-supply time width of the receiving means is lengthened. Therefore, signals other than the true time-timing signal are generated due to noise or the like. Even when is detected as a time timing signal, it is possible to prevent the operating period of the receiving unit from deviating from the hourly time.

When the time-timing signal is detected only once during the operation of the receiving means, the display time is corrected according to the timing content of the timer which starts the operation in accordance with the detection timing of the time-timing signal. If it is highly possible that the time has not been adjusted, it is possible to prevent incorrect time adjustment.

[Brief description of drawings]

FIG. 1 is a block circuit diagram showing a reference example of the present invention.

FIG. 2 is a flowchart for explaining the operation of FIG.

Flowchart for explaining the operation of an embodiment of the present invention; FIG.

FIG. 4 is a flowchart for explaining the operation of another embodiment of the present invention.

FIG. 5 is a block diagram showing a conventional timepiece with a time adjustment function.

FIG. 6 is a flowchart for explaining the operation of FIG.

[Explanation of symbols]

1 Receiving means 22 Time adjustment means, control means, timer

Claims (3)

(57) [Claims] 1. A receiving means capable of receiving a time timing signal, a time adjusting means for adjusting a display time according to the time timing signal received by the receiving means, and an electric power supply to the receiving means intermittently. There, based on the reception result of the previous time timing signal by said receiving means, and a next that control means to control the power supply duration of said receiving means, said control means 1 to the receiving means Time of power supply
When multiple time timing signals are detected during
The result of receiving the time timing signal by the means is determined to be a failure
A clock with a time adjustment function that is characterized by being 2. A receiving means capable of receiving a time timing signal, a time adjusting means for adjusting a display time according to the time timing signal received by the receiving means, and an electric power supply to the receiving means intermittently. There, based on the reception result of the previous time timing signal by said receiving means, and a next that control means to control the power supply duration of said receiving means, said control means 1 to the receiving means Time of power supply
When multiple time timing signals are detected during
A clock with a time correction function, characterized in that it extends the next power supply time width of the means . 3. Receiving means capable of receiving a time timing signal, and control means for intermittently supplying power to the receiving means.
And a time adjustment function timepiece having time adjustment means for adjusting the display time according to the time timing signal received by the reception means, a timer for starting the operation according to the detection timing of the time timing signal. And the time adjustment means is provided when the power is supplied once to the reception means.
If the above time timing signal is detected only once during the period, the above displayed time is corrected according to the content of the timer.
However, if the power is supplied to the receiving means once at a plurality of times,
When the clock timing signal is detected, the above display time is corrected
A clock with a time correction function characterized by not doing.