JP2000266876A - Clock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate clock error correction by obtaining an optimum setting value of a clock error correcting part, automatically setting the optimum setting value and correcting the clock error. SOLUTION: When a desired setting time is set, a clock error correction value is calculated by a microcomputer 1. That is, the time difference between the time shown by the clock device and the setting desired time at the time the desired setting time is set is calculated, the time interval from the time stored in a set time register 10 to the desired setting time is calculated and the calculated time difference is divided by the calculated time. Then, the sign of the division result is reversed and displayed by ppm. The obtained time error correction value is set in a time error correction register 8 by the computer 1 and the content of the set time register 10 is preserved in a previous time setting execution time memory 11 for preparing for next time setting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clock device having a clock error correction function.

[0002]

2. Description of the Related Art Conventionally, a timepiece device configured as shown in FIG. 6 is known. In the timepiece device, in a normal mode, which is a normal mode, date and time information is continuously read from the time counter 505 by the microcomputer 501 and displayed on the display device 502.

When setting the time, the operator first presses the button 503 in the normal mode to instruct the microcomputer 501 to change the mode. Then, the mode is switched from the normal mode to the time setting mode by the microcomputer 501, and a time setting icon is displayed on the display device 502 by the microcomputer 501 to inform the operator that the time setting mode has been entered. Further, the microcomputer 501 displays a cursor for prompting the user to input a time on the display device 502, so that the operator can input the date and time from the keyboard 504.

In this time setting mode, when information is input from the keyboard 504 by the operator, the input information is transferred to the set time register 510 by the microcomputer 501.

[0005] When the button 503 is pressed again by the operator (at the time when the time of the keyboard input arrives),
The microcomputer 501 is instructed to execute time setting, a command is issued to the time setting unit 509 by the microcomputer 501 having received the instruction, and the information in the set time register 510 is counted by the time setting unit 509 receiving the command. The time is set in the time counter of the unit 505, and the time is set.

A timepiece having a function of adjusting ± 30 seconds is also known. Switching to the ± 30 second adjustment mode by the timepiece device is performed by the microcomputer 501 when the button 503 is pressed twice consecutively by the operator in the normal mode, and is switched by the operator in the time setting mode. When the button 503 is pressed once, the operation is performed by the microcomputer 501.

In the adjustment mode for ± 30 seconds (for example,
(Along with the time signal, that is, at the moment when the second value of the time is 0)
When the button 503 is further pressed by the operator, the time is set by the ± 30 second adjusting unit 513 of the time setting unit 509, and the second value of the time counting unit 505 is set to 0.

Further, in addition to the above-described functions, a clock device having an error correction function of increasing or decreasing the clocking speed of the clock device based on the value set in the clock error correction register 508 of the clock error correction unit 507. Is also known.

[0009]

However, it is difficult for a general user to determine the value to be set in the clock error correction register 508, and this error correction function cannot often be used.

[0010] Such error correction is performed by the time counter 505.
It is known that a trimmer capacitor is connected to the crystal oscillator 506 of (1) and the trimming capacitor is adjusted to perform the adjustment. However, in adjusting this trimmer capacitor,
Since the trimmer is rotated depending on the feeling, it is difficult for a general user to rotate the trimmer to correct the error.

An object of the present invention is to provide a timepiece device which can solve the above-mentioned problems and can easily correct a clock error.

[0012]

According to a first aspect of the present invention, there is provided a time counting means, a set time storing means for storing a time set in the clock device, and an input means for inputting a desired setting time. Setting desired time storage means for storing the desired setting time input by the input means; time setting means for setting the desired setting time stored by the desired setting time storage means to the clock device; A clock device comprising: a register for storing a value; and a clock error correction unit that corrects a count value of the time counter unit every predetermined number of seconds based on a clock error correction value stored in the register. When the desired setting time is set by the time setting means, the desired setting time, the time stored by the setting time storage means, and the desired setting time set by the time setting means are set. From the time indicated by the clock device, the ratio of the advance / delay of the clock device between the time set in the clock device at the time of the previous time setting and the time set in the clock device at the time of the current time setting is calculated. Calculating means for inverting the sign of the obtained ratio value, and a value obtained by converting a unit of the ratio calculated by the calculating means into a unit of a value stored in the register and a value stored in the register. A clock error correction value storage means for storing the clock error correction value obtained by the addition means in the register; and a setting desired time when the desired setting time is set. Setting desired time storing means for storing the desired time in the set time storing means.

According to the first aspect, the calculating means calculates a time difference between the time indicated by the clock device at the time when the desired setting time is set by the time setting means and the desired setting time, and stores the time difference in the set time storing means. The time from the calculated time to the desired setting time is calculated, the calculated time difference is divided by the calculated time, and the sign of the division result can be inverted.

In the first aspect, the time counting means includes an oscillating means having a predetermined frequency, a counting means for counting a clock from the oscillating means, and a second for counting up to seconds in response to a carry of the counting means. Counting means, minute counting means for counting up to minutes in response to carry of second counting means, and hour counting means for counting up to hours in response to carry of minute counting means. Can be.

According to a fourth aspect of the present invention, there is provided a time counting means, a time storage means for storing a time set in the timepiece device at the time of setting the time, a register for storing a clock error correction value, and a store in the register. A clock error correction unit that corrects the count value of the time counter unit every predetermined number of seconds based on the clock error correction value that has been set; and, when an adjustment instruction is given, when the second digit is within a predetermined range, the second Resetting the digit, when the value is out of the predetermined range, resetting the second digit, and adjusting means for increasing the minute digit by 1, at the time when the adjustment is performed by the adjusting means, The adjusted time, the time stored by the set time storage means,
The advance of the timepiece device from the time indicated by the timepiece device at the time of adjustment by the adjustment means to the time set in the timepiece device at the time of the previous time setting to the time set in the timepiece device at the time of the adjustment Calculating means for inverting the sign of the ratio value obtained by calculating the delay ratio;
Adding means for adding the value obtained by converting the unit of the ratio calculated by the calculating means into the unit of the value stored in the register and the value stored in the register; and Clock error correction value storing means for storing the obtained clock error correction value in the register; andadjustment time storing means for storing the time adjusted at the time of adjustment by the adjusting means in the set time storage means. It is characterized by.

According to a fourth aspect of the present invention, the calculating means calculates a time difference between a time indicated by the timepiece device at the time of adjustment by the adjusting means and a time adjusted by the adjusting means and set on the timepiece device.
Calculating the time from the time stored in the set time storage means to the time set in the timepiece device after being adjusted, dividing the calculated time difference by the calculated time, and inverting the sign of the division result. Features.

According to a sixth aspect of the present invention, there is provided a time counting means, a time setting means for setting a time in the clock device based on current time data read from a network time server, and a time set in the clock device at the time of time setting. , A register for storing a clock error correction value, and a clock for correcting the count value of the time counting unit every predetermined number of seconds based on the clock error correction value stored in the register. In the clock device having the error correction unit, at the time when the time is set in the clock device by the time setting unit, the set time, the time stored by the set time storage unit, and the time setting time The time between the time indicated by the timepiece and the time set on the timepiece when the previous time was set to the time set on the timepiece when the current time was set Calculating means for inverting the sign of the ratio value obtained by calculating the advance / delay ratio of the measuring device; and converting the unit of the ratio calculated by the calculating means into the unit of the value stored in the register. Adding means for adding the obtained value and the value stored in the register;
A clock error correction value storing means for storing the clock error correction value obtained by the adding means in the register; and a set time for storing the set time in the set time storage means when the time is set by the time setting means. Storage means.

In the present invention, the calculating means calculates a time difference between the time indicated by the clock device at the time when the time is set by the time setting means and the time set by the time setting means, and stores the time difference in the set time storing means. The time from the calculated time to the time set by the time setting means is calculated, the calculated time difference is divided by the calculated time, and the sign of the division result can be inverted.

The invention according to claim 8 is a time counting means, a time storage means for storing the time set in the clock device at the time of setting the time, a register for storing a clock error correction value, and a register for storing the clock error correction value. A clock error correction unit for correcting the count value of the time counting unit every predetermined number of seconds based on the clock error correction value, a reading unit for reading current time data from a network time server, and a reading unit for reading the current time data. When the second of the time based on the current time data is 0 second and the second digit is within a predetermined range,
Resetting the second digit and, if the second digit is out of the predetermined range, resetting the second digit and adjusting the minute digit by 1. From the time adjusted, the time stored by the set time storage means, and the time indicated by the timepiece at the time when the adjustment is performed by the adjustment means, the time is set in the timepiece at the previous time setting. Calculating means for calculating the rate of advance / delay of the timepiece device from the time to the time set in the timepiece device at the time of the adjustment, and inverting the sign of the value of the ratio obtained, and the ratio calculated by the calculating means Adding means for adding a value obtained by converting the unit of the above to the unit of the value stored in the register and the value stored in the register A clock error correction value storing means for storing the clock error correction value obtained by the adding means in the register; and an adjusting time storing means for storing the time adjusted by the adjusting means at the time of adjustment in the set time storing means. And characterized in that:

According to a seventh aspect of the present invention, the calculating means calculates a time difference between the time indicated by the timepiece device at the time when the adjusting means adjusts the time and the time adjusted by the adjusting means and set on the timepiece device.
It is possible to calculate the time from the time stored in the set time storage means to the time adjusted and set in the timepiece device, divide the calculated time difference by the calculated time, and invert the sign of the division result. it can.

According to a first aspect of the present invention, a timer means for counting an elapsed time since the value is stored in the register, and when the elapsed time counted by the timer means exceeds a predetermined time, the value is stored in the register. When the time is set by the time setting means, and the elapsed time measured by the time measuring means does not exceed a predetermined time, the advance / delay by the calculating means is performed. And control means for prohibiting the calculation of the ratio and setting the value of the fixed value storage means in a register.

According to a fourth aspect of the present invention, a timer means for counting an elapsed time after the value is stored in the register, and when the elapsed time counted by the timer means exceeds a predetermined time, the value is stored in the register. A determination value storage unit for storing a value as a determination value; and a ratio of advance / delay by the calculation unit when the elapsed time measured by the timer unit does not exceed a predetermined time when adjustment is performed by the adjustment unit. And a control means for prohibiting the calculation of, and setting the value of the determined value storage means in a register.

In claim 1 or 4, the comparison means for comparing the addition result by the addition means with a predetermined maximum value, and the result of comparison by the comparison means, if the addition result is less than the maximum value, And setting means for setting the maximum value in the register when the addition result is equal to or more than the maximum value.

[0024]

Embodiments of the present invention will be described below in detail with reference to the drawings.

<First Embodiment> FIG. 1 shows a first embodiment of the present invention.
An embodiment will be described. In FIG. 1, reference numeral 1 denotes a microcomputer having a ROM 101 and a RAM 102, a control program stored in the ROM 101, and the RAM 102 used as a work area.

Reference numeral 5 denotes a time counting unit, which has a crystal oscillator using a crystal oscillator 6 and a clock counter. The clock counter has a pulse counter, a time counter, and a calendar counter. The time counter includes a second counter, a minute counter, and an hour counter. The calendar counter includes a day of the week counter, a day counter, a month counter, and a year counter.

When the oscillation frequency of the crystal oscillator is 32768 Hz, for example, the pulse counter outputs a carry signal when 32768 pulses from the crystal oscillator are counted, and the second counter outputs a carry signal from the pulse counter. Outputs a carry signal when is counted 60 times,
The minute counter outputs a carry signal when the carry signal from the second counter is counted 60 times, so that the carry signal from the lower counter is sequentially counted by the upper counter, and time data is generated. Is done. The time counting unit 5 can slightly increase or decrease the clocking speed based on the value of the clock error correction register 8.

Reference numeral 7 denotes a clock error correction unit which corrects the count value of the time counter 5 every 30 seconds based on a clock error correction value stored in a clock error correction register 8 (writable and readable). Is what you do. The clock error correction unit 7 updates the value obtained by subtracting the value (either positive or negative) of the clock error correction register 8 from the carry value (normally 32768) of the pulse counter every 30 seconds. As a carry value.

Reference numeral 9 denotes a time setting unit having a set time register 10 for setting a time. The set time register 10 stores a desired set time input from the keyboard 4. When the button 3 is pressed, the time setting unit 9 stores the desired setting time of the setting time register 10 in the clock counter of the time counting unit 5 in accordance with a command issued from the microcomputer 1 in response to the pressing of the button 3. Overwrite. Reference numeral 11 denotes a previous time setting execution time storage unit, and the time set by the time setting unit 9;
That is, the value of the set time register 10 of the time setting unit 9 is stored.

Reference numeral 2 denotes a display device for displaying a time, an operation mode of the present system, and the like. Reference numeral 3 denotes a button for setting an operation mode, giving an instruction to start execution of various commands, and inputting time data. Reference numeral 4 denotes a keyboard for inputting information such as desired setting time and date. In the present embodiment,
To improve operability, a button 3 and a keyboard 4 are provided.

If the time is, for example, April 25, 1998,
When the time is 19:28:30 on Saturday, the user operates the keyboard 4 to store 1998, 04, 25, 6 (a value obtained by encoding Saturday), 19 in the set time register 10 of the time setting unit 9. , 28, 30 are written. The correspondence between the day of the week and numerical values is Sunday = 0, Monday = 1, Tuesday = 2,
Wednesday = 3, Thursday = 4, Friday = 5, Saturday = 6. Thereafter, when the user operates the button 3 or the keyboard 4 to perform a predetermined instruction, a time setting command is transmitted in synchronization with the instruction, and the value of the set time register 10 (1998,
04, 25, 6, 19, 28, 30) are set corresponding to the year counter, the month counter, the day counter, the day counter, the hour counter, the minute counter, and the second counter, and the time is set.

The timepiece apparatus is normally in a normal mode state. In the normal mode, the microcomputer 1 continuously reads the date and time information from the time counter 5 and displays the read information in the display device 2 as in the conventional example.
To be displayed. In this normal mode state, the button 3 is pressed and the microcomputer 1
By instructing to change the mode, the mode can be shifted to the time setting mode.

FIG. 2 is a flowchart showing an example of the control program stored in the ROM 101 of FIG. In the default normal mode, date and time information is continuously read from the clock counter of the time counter 5 by the microcomputer 1, and the read date and time information is displayed on the display device 2.

In this normal mode, when the operator presses the button 3 to instruct the microcomputer 1 to change the mode, the microcomputer 1 switches the mode from the normal mode to the time setting mode. Then, in order to inform the operator that the time setting mode has been entered, a time setting icon is displayed on the display device 2 and a cursor prompting the time input is displayed, and the date and time can be input from the keyboard 4. (S201).

Once the keyboard 4 is operated by the operator (S202), the set time and the like can be input from the keyboard 4 and the input can be changed until the button 3 is pressed again by the operator. (S203). The input of the second button 3 causes the microcomputer 1 to issue a time setting command.

When the button 3 is pressed by the operator (for example, in accordance with a time signal) and the microcomputer 1 is instructed to start the time setting operation (S203), the time of the clock counter of the time counting unit 5 is set. The data is read by the microcomputer 1 and temporarily saved in an internal memory (S204).

Thereafter, the microcomputer 1 transfers the set time information input in S202 to the set time register 10 (S205). Next, the microcomputer 1 issues a time setting command to the time setting unit 9.

Upon receiving the time setting command, the time setting unit 9 overwrites the time set in the set time register 10 on the clock counter of the time counting unit 5 and executes the time setting (S206). Therefore, the time information of the clock counter of the time counting unit 5 is deleted. (Therefore, it is saved in S204.) Thus, the time setting process is completed. Thereafter, the process proceeds to a process of calculating and setting a clock error correction value. Then, the correction value τ [ppm] of the clock error is calculated by the microcomputer 1 using the following equation:

[0039]

Τ = − ((Tc−Tn) / (Tnx−Tpx)) × 10 ⁶ (1) (S207).

Here, Tc is the time indicated by the clock device immediately before the desired time is set, and is the time temporarily saved in the memory or the like by the microcomputer 1 in S204.

Tn is the desired setting time, which is the time set in the setting time register 10.

Tnx is the current time setting execution time, and
It is essentially the same as the desired setting time Tn.

Tpx is the previous time setting execution time,
This is the time stored in the previous time setting execution time storage unit 11.

The numerator of the formula (1), that is, (Tc-T
n) indicates how much time is delayed (when the calculated value is a negative value) or advanced (when the calculated value is positive) between the previous time setting and the current time setting. Represents. The denominator of equation (1), that is, (Tnx−Tp
x) indicates how much time has elapsed between the previous time setting and the current time setting. Therefore, equation (1) represents the error rate (error per unit time) from the previous time setting to the current time setting of the clock counter of the time counter 5, and this rate is 10 Multiply by ⁶ to express the correction value of the clock error in ppm.
In order to correct the error of the above, the sign is inverted.

Then, the correction value obtained from the equation (1) is set in the clock error correction register 8 by the microcomputer 1 (S208), and the contents of the set time register 10 are changed in preparation for the next time setting. The time is stored in the previous time setting execution time storage unit 11 (S209), and when the time setting operation is completed, the microcomputer 1 returns the mode of the timepiece device to the normal mode.

Then, the correction value obtained from the equation (1) is
Clock error correction register 8 by microcomputer 1
Is set to (S208). The correction value obtained from the equation (1) is obtained from the ratio of the error between the previous time setting and the current time setting of the time counter 5, and the temperature of the clock device and the secular change of the parts used. Since this is the latest information including such factors as the above, it can be said that this is the optimal correction value for this timepiece device at this time.

This optimum correction value is to be performed for the current state of the clock device, that is, for the current setting value of the clock error correction register 8. That is, the previously calculated optimum correction value is converted into a unit of the set value of the clock error correction register 8 and added to the current value of the clock error correction register 8.

Correcting the error of the time counter 5 means canceling the error. In the present embodiment, when the second digit becomes 30, the count value of one second is changed by the value of the clock error correction register 8. The pulse counter of the time counter 5 carries out a carry once every 32768 times, that is, counts up to a second counter. In the correction of the clock error based on the value of the clock error correction register 8,
For example, when 1 is set in the clock error correction register 8,
One pulse is added once every 30 seconds, and in 30 seconds, 1 / (32768 × 30) = 0.00010001
The time can be advanced by 7 = 1.017 [ppm (parts per million)].

For example, when +5 is set in the clock error correction register 8, a correction to advance by 5 ppm (= 5 × 1.017) can be applied. For example, when -7 is set in the clock error correction register 8, 7 ppm (= 7 × 1.017)
A delay can be applied.

Since the amount of the set value of the clock error correction register 8 per unit is defined as 1 ppm, the calculated optimum correction value may be added to the current set value of the clock error correction register 8 as it is.

The new set value is the optimum set value of the clock error correction register 8 in the current state of the clock device, and is automatically set.

For example, the last time, 1 on November 1, 1997
After setting the time at 2: 00: 00: 00, December 1997
The time is set at 12: 00: 00: 00 on the first day of the month, and the time indicated by the clock device at the time when the time is set this time is 12:00:26 on December 1, 1997. Then, at Tc, 1997/12/01 12:00:
26 is substituted into Tn, 1997/12/01 1
2: 00: 0 is substituted for Tnx, 1997/12
/ 01 12:00: 00 is substituted, and Tpx is 19
97/11/01 12:00:00 will be substituted. Then, the correction value τ of the clock error is

[0053]

Τ = − (26/2592000) × 10 ⁶ = −10.03

From this calculation result, it can be seen that this timepiece device has advanced 26 seconds during one month, that is, during 2592000 seconds. That is, it has advanced at a rate of about 10 ppm.

When calculating the correction value, the equation (1) is used.
When a value obtained by rounding off the decimal part of the result calculated in the above is set in the clock error correction register 8, the minimum unit of the correction value that can be set in the clock error correction register 8 (this embodiment) In the embodiment, as described above, less than 1/2 of 1 ppm), that is, ± 0.5 ppm
The following errors can be obtained, and ultra-high accuracy correction can be performed. Thus, the correction operation is completed.

As described above, the optimum setting value of the clock error correction unit 7 is obtained, the optimum setting value is automatically set, and the clock error is corrected. Occasionally, it is only necessary to set the time, and it is no longer necessary to perform the clock error correction adjustment which is difficult and time-consuming, such as adjusting while measuring the frequency of the clock crystal oscillator in an environment where the ambient temperature is controlled.

Also, the user does not need to perform similarly difficult clock error correction, and the optimum correction is automatically performed every time the time is adjusted. That is, it is possible to realize an inexpensive and highly accurate timepiece device despite simple operations.

<Second Embodiment> FIG. 3 shows a second embodiment of the present invention.
An embodiment will be described. This embodiment differs from the first embodiment in the configuration of the time setting unit. That is, the time setting unit 309 of the present embodiment has a ± 30 second adjusting unit 313 in addition to the set time register 10.
The ± 30 second adjustment section 313 may be independent.

The timepiece device of the present embodiment is normally in a normal mode. In the normal mode, when the button 3 is pressed, the time setting mode is entered. It enters the adjustment mode for ± 30 seconds.

In the ± 30 seconds adjustment mode, when the button 3 is pressed by the operator at the time when the second digit has just become 0, the time set in the time counting unit 5 is changed by the microcomputer 1. The read time is read and the read time is temporarily saved in an internal memory or the like. Then, the ± 30 second adjusting section 31 of the time setting section 9
3, the microcomputer 1 issues an adjust command for ± 30 seconds.

The ± 30-second adjusting unit 13 receiving the ± 30-second adjusting command sets the second counter of the time counting unit 5 when the second digit at the time when the button 3 is pressed is in the range of 0 to 29. And set it to 0 seconds, while
If the second digit at the time when the button 3 is pressed is within the range of 30 to 59, the second counter of the time counter 5 is reset to 0 seconds and the count value of the minute counter is increased by one. Let it.

The present embodiment differs from the first embodiment in the method of calculating the value stored in the clock error correction register 8 in the clock error correction register. That is, in the present embodiment, the time difference between the time indicated by the clock device at the time when the adjustment is performed by the ± 30 second adjustment unit 313 and the time adjusted by the ± 30 second adjustment unit 313 and set in the clock device is calculated. At the same time, the time from the time stored in the previous time setting execution time storage unit 11 to the time adjusted by the adjusting unit 313 and set to the timepiece device is calculated, and the calculated time difference is calculated. Divided by the given time, invert the sign of the division result,
Multiplied by 10 ⁶ , the obtained value is added to the value stored in the clock error correction register 8, and the obtained clock error correction value is stored in the clock error correction register 8.
The time adjusted at the time of the adjustment by the adjustment unit 313 is stored in the previous time setting execution time storage unit 11.

Therefore, within a range where the clock error does not exceed ± 30 seconds, the clock error is corrected periodically (in the present embodiment, since the accuracy after the error correction is ± 0.5 ppm or less, once a year). Times is sufficient), for example, button 3 according to the time signal
The adjustment can be performed only by the simple operation of. That is, the adjustment can be performed by pressing the button 3 three times.

<Third Embodiment> FIG. 4 shows a third embodiment of the present invention.
An embodiment will be described. The present embodiment differs from the first embodiment in the time setting method. That is,
In the present embodiment, the microcomputer 1 automatically connects to the Internet via the communication unit 414 at appropriate intervals, and stores the current time data from the network time server 415 on the Internet in the set time register of the time setting unit 9. 10 and the current time of the set time register 10 is overwritten on the clock counter of the time counting unit 5.

In the present embodiment, the clock error correction value is calculated and stored in the clock error correction register 8 simultaneously with the time setting, essentially in the same manner as in the first embodiment. Therefore, neither the manufacturer nor the user of the product performs time setting, clock error correction operation, and the like, and the clock device can always be used with the highest accuracy in accordance with the usage environment of the operator.

For example, as described in the first embodiment, if it is assumed that the accuracy is maintained at ± 0.5 ppm or less and the monthly difference is ± 1.8 seconds or less, the network time server 415 is accessed to If the period for performing the adjustment is set to about three days (the clock error is 0.13 seconds or less, and the difference cannot be identified by looking at the time displayed on the display device by a human), the clock device operates normally. As long as you continue, you can create a watch that will not go forever.

The time setting register 1 of the clock setting unit 9
When the current time data is transferred to 0 and the time is adjusted, the process can be executed at any number of seconds, so that a series of processes of time adjustment and clock error correction can be executed instantaneously.

<Fourth Embodiment> FIG. 5 shows a fourth embodiment of the present invention.
An embodiment will be described. This embodiment is different from the second embodiment in the adjustment method. That is, in the present embodiment, the microcomputer 1 automatically connects to the Internet via the communication unit 414 at appropriate intervals and refers to the current time data from the network time server 415 on the Internet. During the time (up to one minute), the second digit of the time data is monitored, and at the moment when the second digit is 0, essentially as in the second embodiment,
The adjustment is performed by the adjustment unit 13 for ± 30 seconds.

In the present embodiment, a clock error correction value is calculated and stored in the clock error correction register 8 at the same time as the adjustment by the ± 30 second adjustment unit 13, essentially in the same manner as in the second embodiment. I did it. Therefore, neither the manufacturer nor the user of the product performs time setting, clock error correction operation, and the like, and the clock device can always be used with the highest accuracy in accordance with the usage environment of the operator.

<Fifth Embodiment> In the first and second embodiments, since these operations are manually performed by a human,
Erroneous operation or setting error sometimes occurred. In such a case, the correction value is calculated under the condition at that time, and a random value having no basis is stored in the clock error correction register 8. In such a case, the operator notices an erroneous operation or a setting error, or an error increases even when the operator does not notice. Therefore, the time setting operation or the adjusting operation is performed again in a short period of time.

Therefore, in the present embodiment, the elapsed time from when the value is stored in the clock error correction register 8 of the clock error correction unit 7 is measured, and when the measured elapsed time exceeds a predetermined time. The value stored in the clock error correction register 8 is stored in the RAM 102 of the microcomputer 1 as a final value.

When 1296000 seconds (15 days) is adopted as the predetermined time, the clock error becomes ± 0.5 ppm or less when the optimum correction value is set. Therefore, an error of ± 0.65 seconds or less occurs in 15 days. Since the clock error is 1 second or less even after 15 days, the user is usually unlikely to perform time adjustment or adjustment. That is, resetting within 15 days from the previous setting or adjustment can be regarded as that the optimum error correction value has not been set for some reason.

If the next time adjustment operation or adjustment operation is not performed within 15 days after the previous time adjustment operation or adjustment operation, the clock error correction value set simultaneously with the previous time adjustment operation or adjustment execution Can be regarded as appropriately set without erroneous operation or operation error, and the clock error correction value set at that time is stored in the RAM 102 as the fixed clock error correction value.
If the next time adjustment operation or adjustment operation is performed within 15 days, the previous time adjustment operation or adjustment operation has an erroneous operation or an operation error, and the optimal clock error correction value is set. Assuming that the clock error correction value has not been calculated, the current clock error correction value is not calculated, and the value previously stored in the RAM 102 is set in the clock error correction register 8 instead of the optimum clock error correction value. Strictly speaking, the correction value in this case is not the optimum setting value at that time, but since it is the previous optimum setting value, it is considerably close to the optimum setting value at that time. Therefore, it is possible to prevent the clock error correction value from being erroneously set due to an erroneous operation, an operation error, or the like in time adjustment, operation, or adjustment operation.

<Sixth Embodiment> Even if an erroneous operation or setting error is made during a time setting operation or an adjustment operation, the operator may notice the error or increase the error even if the operator does not notice it. There is a high possibility that the time setting operation and the adjusting operation will be performed again, but in the worst case, they may be used as they are.

Normally, the secular change in the timepiece does not occur suddenly and greatly, but gradually and gradually over a long period of time. Even if the temperature changes, there is no significant change in a period of about one month. That is, the clock error hardly changes suddenly.

In this embodiment, the microcomputer 1 compares the calculated clock error correction value with a predetermined maximum value (for example, 20 ppm in absolute value).
As a result of the comparison, if the clock error correction value is less than the maximum value, the clock error correction value is added and set in the clock error correction register 8, and if the clock error correction value is equal to or greater than the maximum value, The value (that is, +20 ppm or -20 ppm) is added and set in the clock error correction register.

Therefore, if the magnitude of the calculated clock error correction value is within the range from -20 ppm to +20 ppm at the time of time setting or adjustment, the calculated clock error correction value is stored in the clock error correction register 8. And added to the current value of the clock error correction register 8. On the other hand, the magnitude of the calculated clock error correction value is -20 ppm
In the following cases, -20 ppm is used. In the case of +20 ppm or more, +20 ppm is used.
20 ppm is converted into the unit of the clock error correction register 8 and added to the current value of the clock error correction register 8.

Therefore, the clock error is extremely large even if the user continues to use the watch as a result of an erroneous operation or setting error during the time setting or adjustment (in the present embodiment, the difference in month is 52 seconds or more. Usually, there is the above error.) It will not be corrected, but will be corrected at the appropriate time setting or adjustment thereafter.

In addition to the incorrect operation or setting error, for example, the time is set for the first time after the manufacture of the clock device, the one used in the warm region is brought to the cold region, and the time is set three years after the previous time setting. If the absolute value requires a correction exceeding 20 ppm when performing the adjustment, the clock error correction at that time cannot be completely corrected. However, the clock error correction is continued within the range of 20 ppm at the time of the subsequent time setting or adjustment, and is finally completely corrected. For example, if a correction of 50 ppm is actually required, the first correction requires 20 ppm and the second correction requires 20 ppm.
It will be corrected to 10 ppm in the third correction and 10 ppm in the third correction, and will be completely corrected in the third correction, and will be accurate each time the time adjustment is performed.

[0080]

As described above, according to the present invention,
With the configuration described above, the clock error can be easily corrected.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a flowchart illustrating an example of a control program stored in a ROM 101 of FIG. 1;

FIG. 3 is a block diagram showing a second embodiment of the present invention.

FIG. 4 is a block diagram showing a third embodiment of the present invention.

FIG. 5 is a block diagram showing a fourth embodiment of the present invention.

FIG. 6 is a block diagram showing a configuration of a conventional timepiece device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Microcomputer 2 Display device 3 Button 4 Keyboard 5 Time counter 6 Crystal oscillator 7 Clock error correction unit 8 Clock error correction register 9 Time setting unit 10 Setting time register 11 Previous time setting execution time storage unit 13 ± 30 second adjustment unit 14 Communication unit

Claims (12)

[Claims] 1. A time counting means, a set time storage means for storing a time set in the clock device, an input means for inputting a desired setting time, and a setting request input by the input means Setting desired time storage means for storing time, time setting means for setting the desired setting time stored in the setting desired time storage means in the clock device, a register for storing a clock error correction value, and the register A clock error correction unit that corrects the count value of the time counting unit every time a predetermined number of seconds elapses based on the clock error correction value stored in the clock device. At the time, the desired setting time, the time stored by the setting time storage means, the time indicated by the timepiece device at the time of setting the desired setting time by the time setting means, etc. The sign of the value of the ratio obtained by calculating the rate of advance / delay of the timepiece device between the time set on the timepiece device at the time of the previous time setting and the time set on the timepiece device at the current time setting is represented by Calculating means for inverting, and adding means for adding a value obtained by converting a unit of the ratio calculated by the calculating means into a unit of a value stored in the register and a value stored in the register Clock error correction value storing means for storing the clock error correction value obtained by the adding means in the register; and storing the desired setting time in the setting time storage means at the time when the desired setting time is set. A timepiece device comprising: a set desired time storage means. 2. The method according to claim 1, wherein the calculating means calculates a time difference between the time indicated by the timepiece apparatus at the time when the desired time is set by the time setting means and the desired time, and the setting means includes: A timepiece device comprising: calculating a time from a time stored in a time storage means to the desired setting time; dividing the calculated time difference by the calculated time; and inverting a sign of the division result. 3. The time counting means according to claim 1, wherein said time counting means comprises: oscillating means having a predetermined frequency; counting means for counting a clock from said oscillating means; Second counting means for counting up, minute counting means for counting up to minutes in response to carry of the second counting means, and counting up to hours in response to carry of the minute counting means A timepiece device comprising an hour counting means. 4. A time counting means, a time storage means for storing a time set in the clock device at the time of setting a time, a register for storing a clock error correction value, and a clock error stored in the register. A clock error correction unit that corrects the count value of the time counting unit every time a predetermined number of seconds elapses based on the correction value; and when an adjustment instruction is given, if the second digit is within a predetermined range, the second digit is reset. An adjusting means for resetting the second digit and increasing the minute digit by 1 when the second digit is out of the predetermined range; and From the time stored by the set time storage means and the time indicated by the clock device at the time of adjustment by the adjustment means, Calculating means for calculating the rate of advance / delay of the timepiece device from the time set in the timepiece device at a regular time to the time set in the timepiece device at the time of the adjustment, and inverting the sign of the ratio value obtained; Adding means for adding a value obtained by converting a unit of the ratio calculated by the calculating means into a unit of a value stored in the register and a value stored in the register; and Clock error correction value storage means for storing the obtained clock error correction value in the register; andadjustment time storage means for storing the time adjusted at the time of adjustment by the adjustment means in the set time storage means. A clock device characterized by the above-mentioned. 5. The calculating means according to claim 4, wherein the calculating means calculates a time difference between a time indicated by the timepiece device at the time of adjustment by the adjusting means and a time adjusted by the adjusting means and set in the timepiece device. Calculating and calculating the time from the time stored in the set time storage means to the time adjusted and set in the timepiece apparatus, dividing the calculated time difference by the calculated time, and dividing A clock device for inverting the sign of a result. 6. A time counting means, a time setting means for setting a time in the clock device based on current time data read from a network time server, and a time storage for storing a time set in the clock device at the time of setting the time. Means, a register for storing a clock error correction value, and clock error correction means for correcting the count value of the time counting means every predetermined number of seconds based on the clock error correction value stored in the register. The time setting unit sets the time in the clock device by the time setting unit, the set time, the time stored by the set time storage unit, and the time set by the clock device. The advance of the timepiece device from the time to the time set on the timepiece device at the time of the current time setting and the time set on the timepiece device at the time of the previous time setting Calculating means for inverting the sign of the ratio value obtained by calculating the ratio, and a value obtained by converting the unit of the ratio calculated by the calculating means into the unit of the value stored in the register Adding means for adding the clock error correction value obtained by the adding means to the register, and a clock error correction value storing means for storing the clock error correction value obtained by the adding means to the register; and setting the time by the time setting means. And a set time storing means for storing the set time in the set time storage means at the set time. 7. The method according to claim 6, wherein the calculating means calculates a time difference between a time indicated by the timepiece device at the time when the time is set by the time setting means and a time set by the time setting means. Calculating the time from the time stored in the set time storage means to the set time by the time setting means, dividing the calculated time difference by the calculated time, and inverting the sign of the division result. Clock device to do. 8. Time counting means, time storage means for storing the time set in the timepiece device at the time of time setting, a register for storing a clock error correction value, and a clock error stored in the register. A clock error correction means for correcting the count value of the time counting means every time a predetermined number of seconds has elapsed based on the correction value; a reading means for reading current time data from a network time server; and a current time data read by the reading means. At the time when the second based on the time is 0 second, when the second digit is within a predetermined range, the second digit is reset, and when the second digit is outside the predetermined range, the second digit is reset, A timepiece device having an adjusting means for increasing a minute digit by one, wherein at the time of adjustment by the adjusting means, the adjusted time and the setting From the time stored by the time storage means and the time indicated by the timepiece device at the time of adjustment by the adjustment means, the time is set in the timepiece device at the time of the adjustment from the time set in the timepiece device at the previous time setting. Calculating means for calculating the rate of advance / delay of the timepiece device up to the time, inverting the sign of the value of the rate obtained, and the unit of the rate calculated by the calculating means stored in the register Adding means for adding a value obtained by converting to the unit of the above and a value stored in the register; and a clock error correction value storing means for storing the clock error correction value obtained by the adding means in the register. Adjusting time storing means for storing the time adjusted at the time of adjustment by the adjusting means in the set time storing means. Watch device according to claim. 9. The time calculating device according to claim 7, wherein the calculating unit calculates a time difference between a time indicated by the timepiece device at the time of adjustment by the adjusting device and a time adjusted by the adjusting device and set in the timepiece device. Calculating and calculating the time from the time stored in the set time storage means to the time adjusted and set in the timepiece apparatus, dividing the calculated time difference by the calculated time, and dividing A clock device for inverting the sign of a result. 10. The timer according to claim 1, wherein: a timer means for counting an elapsed time from when a value is stored in the register; and when the elapsed time counted by the timer means exceeds a predetermined time, A fixed value storage means for storing the value stored in the memory as a fixed value; and, when the time setting is performed by the time setting means, the elapsed time measured by the clock means does not exceed a predetermined time. And a control means for prohibiting the calculation means from calculating the advance / delay ratio and setting the value of the fixed value storage means in the register. 11. The timer according to claim 4, wherein: a timer means for counting an elapsed time from when a value is stored in the register; and when the elapsed time counted by the timer means exceeds a predetermined time, Fixed value storage means for storing the value stored in the storage means as a fixed value, when the adjustment is performed by the adjustment means,
If the elapsed time measured by the clocking means does not exceed a predetermined time, control is performed to prohibit the calculation means from calculating the advance / delay ratio and to set the value of the confirmed value storage means in the register. And a clock device. 12. The comparing device according to claim 1, wherein the comparing unit compares the addition result by the adding unit with a predetermined maximum value, and the comparison result by the comparing unit is smaller than the maximum value. In such a case, the addition result is stored in the register, and if the addition result is equal to or greater than the maximum value,
Setting means for setting the maximum value in the register.