JP6868461B2 - Mobile terminals, programs, temperature compensation systems, and electronic watches - Google Patents

Description

The present invention relates to mobile terminals, programs, temperature compensation systems, and electronic watches.

Conventionally, an electronic clock that measures time based on the oscillation frequency of a crystal oscillator has been known. The crystal unit has a characteristic that the oscillation frequency fluctuates depending on the temperature of the usage environment. If the oscillation frequency of the crystal oscillator fluctuates, the electronic clock will shift in pace. For example, Patent Document 1 discloses a technique for performing temperature compensation according to a rate shift due to a temperature characteristic of a crystal unit.

Japanese Unexamined Patent Publication No. 2015-082815

It is desired to improve the accuracy of temperature compensation according to the usage environment of the electronic clock. However, the amount of information that can be stored in the electronic timepiece is limited, and there is a limit to the control that improves the accuracy of temperature compensation in the electronic timepiece.

The present invention has been made in view of such circumstances, and an object of the present invention is to improve the accuracy of temperature compensation without increasing the amount of information stored in the electronic timepiece.

The invention disclosed in the present application in order to solve the above problems has various aspects, and the outline of typical ones of these aspects is as follows.

(1) A temperature acquisition unit capable of communicating with an electronic clock including an oscillator or an oscillator and acquiring the temperature of the operating environment of the electronic clock measured by the temperature measurement unit included in the electronic clock, and the oscillator or the oscillator or A temperature compensation condition storage unit that stores temperature compensation conditions according to the temperature characteristics of the oscillator, and a switching unit that switches the temperature compensation conditions used for temperature compensation based on the temperature tendency of the usage environment acquired by the temperature acquisition unit. And, including mobile terminals.

(2) In (1), in the temperature compensation condition storage unit, the temperature of the usage environment and the correction value of the rate of the electronic clock are associated with each other, and a plurality of the temperature compensations in which the temperature sections are dense are different from each other. The condition is stored, and the switching unit switches to the temperature compensation condition in which the temperature tendency of the usage environment acquired by the temperature acquisition unit corresponds to the region where the temperature section is dense, among the plurality of temperature compensation conditions. Mobile terminal.

(3) In (1) or (2), the rate deviation amount acquisition unit that acquires the rate deviation amount of the electronic clock, the temperature tendency of the usage environment acquired by the temperature acquisition unit, and the rate deviation amount acquisition. The temperature compensation condition storage unit further includes a generation unit that generates a temperature compensation condition based on the step deviation amount acquired by the unit, and the temperature compensation condition storage unit stores the temperature compensation condition generated by the generation unit. ..

(4) In (1), the temperature of the usage environment and the correction value of the rate of the electronic clock are set so that the temperature section corresponding to the temperature tendency of the usage environment acquired by the temperature acquisition unit is a dense region. A mobile terminal further having a generation unit that generates a temperature compensation condition associated with the above based on a function of the temperature of the usage environment and the correction value of the rate of the electronic clock.

(5) In (3) or (4), the generation unit two-dimensionally plots the temperature of the usage environment acquired by the temperature acquisition unit and the rate deviation amount acquired by the rate deviation acquisition unit. , A mobile terminal that generates the temperature compensation condition based on the two-dimensionally plotted data.

(6) In any of (3) to (5), the generator is a portable terminal that generates the temperature compensation condition according to a function indicating the temperature characteristic of the oscillator or the oscillator acquired in advance.

(7) In (3), the step deviation amount acquisition unit acquires the step deviation amount based on the time deviation of the internal time of the electronic clock with respect to the reference time of the mobile terminal and the period in which the time deviation occurs. Mobile terminal.

(8) In (7), the step deviation amount acquisition unit is a mobile terminal that acquires the step deviation amount when the cumulative time deviation reaches a predetermined amount.

(9) In any one of (1) to (8), the temperature tendency of the usage environment is a portable terminal which is an average value of the maximum temperature and the minimum temperature acquired by the temperature acquisition unit.

(10) In any of (1) to (8), the tendency of the temperature in the usage environment is the average value, the median value, or the mode value of the temperature acquired by the temperature acquisition unit.

(11) A program for causing a computer to function as a mobile terminal according to any one of (1) to (10).

(12) The electronic clock includes an electronic clock including an oscillator or an oscillator and a portable terminal capable of communicating with the electronic clock, and the electronic clock has a temperature measuring unit for measuring the temperature of the operating environment of the electronic clock. The portable terminal has a temperature acquisition unit that acquires the temperature of the operating environment of the electronic clock measured by the temperature measurement unit, and a temperature compensation condition storage unit that stores temperature compensation conditions according to the temperature characteristics of the oscillator or oscillator. A temperature compensation system including a switching unit for switching the temperature compensation conditions used for temperature compensation based on the temperature tendency of the operating environment acquired by the temperature acquisition unit.

(13) In (12), the electronic clock is a temperature compensation system having a temperature compensation circuit that performs temperature compensation based on the temperature compensation conditions switched by the switching unit.

(14) An electronic clock that includes an oscillator or oscillator and can be communicated and connected to a mobile terminal, depending on the temperature acquisition unit that acquires the temperature of the operating environment of the electronic clock and the temperature characteristics of the oscillator or oscillator. An electron having a temperature compensation circuit that performs temperature compensation using the temperature compensation condition that is switched based on the temperature tendency of the usage environment acquired by the temperature acquisition unit in the mobile terminal. clock.

(15) In (14), the temperature notification unit that notifies the mobile terminal of the temperature of the usage environment acquired by the temperature acquisition unit, and the temperature of the usage environment notified by the temperature notification unit in the mobile terminal. An electronic clock having a temperature compensation condition acquisition unit that acquires the temperature compensation condition switched based on the tendency of the mobile terminal.

According to the aspects (1) to (15) of the present invention, the accuracy of temperature compensation can be improved without increasing the amount of information stored in the electronic timepiece.

It is a top view which shows an example of the appearance of an electronic timepiece. It is a block diagram which shows an example of the whole structure of the temperature compensation system which concerns on 1st Embodiment. It is a figure which shows an example of the temperature characteristic of a crystal oscillator. It is a figure which shows an example of the compensation condition for low temperature. It is a figure which shows an example of the compensation condition for medium temperature. It is a figure which shows an example of the compensation condition for high temperature. It is a figure which shows an example of the temperature characteristic of a crystal oscillator. It is a figure which shows an example of a relative temperature compensation condition. It is a figure which shows an example of the compensation condition for low temperature. It is a figure which shows an example of the compensation condition for medium temperature. It is a figure which shows an example of the compensation condition for high temperature. It is a figure for demonstrating the tendency of the temperature of the use environment, and the acquisition of the step deviation amount in 2nd Embodiment. It is a figure which shows the holding temperature characteristic and the actual temperature characteristic of the crystal oscillator in 2nd Embodiment. It is a figure explaining the adjustment of the holding temperature characteristic in 2nd Embodiment. It is a figure explaining the adjustment of the holding temperature characteristic in 2nd Embodiment. It is a figure explaining the adjustment of the holding temperature characteristic in 2nd Embodiment. It is a figure explaining the adjustment of the holding temperature characteristic in 2nd Embodiment. It is a figure explaining the adjustment of the holding temperature characteristic in 2nd Embodiment. It is a figure explaining the adjustment of the holding temperature characteristic in 2nd Embodiment. It is a figure explaining the adjustment of the holding temperature characteristic in 2nd Embodiment. It is a figure which shows the holding temperature characteristic and the actual temperature characteristic of the crystal oscillator in the modification of 2nd Embodiment.

Hereinafter, the temperature compensation system 100 according to the first embodiment of the present invention will be described with reference to the drawings. First, with reference to FIG. 1, an outline of the configuration of the electronic clock 1 included in the temperature compensation system 100 according to the first embodiment will be described. FIG. 1 is a plan view showing an example of the appearance of the electronic clock.

The electronic clock 1 has the appearance of a so-called analog wristwatch, and is connected to the mobile terminal 20 (see FIG. 2) by short-range wireless communication. The standard for short-range wireless communication is not particularly limited and may be any known standard, but in the first embodiment, BLE (Bluetooth (registered trademark) Low Energy) is used.

The electronic clock 1 has a crown 2 used for setting the time of the time hand and using a function, and a push button 3. The electronic clock 1 has a dial 4 in a body which is an exterior. On the dial 4, a connection processing display (ACT in FIG. 1) 8 indicating that the electronic clock 1 is performing a process of establishing a communication connection with the mobile terminal 20 and a communication connection with the mobile terminal 20 are displayed. A link loss display (LL in FIG. 1) 9 indicating that the user has been disconnected, an e-mail reception display (MAIL in FIG. 1) 10 notifying that the mobile terminal 20 has received an e-mail, and a mobile terminal. 20 has an incoming call display (CALL in FIG. 1) 11 for notifying that there is an incoming call. The electronic clock 1 notifies the user of each information by pointing to any of the connection processing display 8, the link loss display 9, the e-mail reception display 10, and the telephone incoming call display 11 with the second hand 7.

The electronic clock 1 has a plurality of pointers driven by a stepping motor 36 (see FIG. 2). Specifically, the electronic clock 1 has an hour hand 5, a minute hand 6, and a second hand 7 as pointers. The electronic clock 1 may have a guideline other than these. It is preferable that the electronic clock 1 is provided with a windshield made of a transparent material such as glass so as to cover the dial 4. Further, on the opposite side of the windshield, the back cover may be attached to the body.

The design of the electronic clock 1 shown in FIG. 1 is an example. For example, the body may be square instead of round, and the presence, number, and arrangement of the crown 2 and the push button 3 are arbitrary.

The overall configuration of the temperature compensation system 100 according to the first embodiment will be described with reference to FIG. FIG. 2 is a block diagram showing an example of the overall configuration of the temperature compensation system according to the first embodiment.

The temperature compensation system 100 includes an electronic clock 1 and a mobile terminal 20. The mobile terminal 20 is an electronic device that can be carried by the user, and is, for example, a smartphone. The mobile terminal 20 has a communication unit (not shown) including an antenna, and the communication unit transmits and receives radio waves and the like used for short-range wireless communication.

As shown in FIG. 2, the electronic clock 1 includes an oscillation circuit 31, a frequency dividing circuit 32, a counter 33, a control unit 34, a motor drive circuit 35, a stepping motor 36, a time display unit 37, and a temperature. It has a measuring unit 38, a temperature compensation circuit 39, a crystal oscillator 40, and a temperature recording unit 41. Further, the electronic clock 1 has a communication unit (not shown) including an antenna, and the communication unit transmits and receives radio waves and the like used for short-range wireless communication.

The oscillation circuit 31 is connected to the crystal oscillator 40. The crystal oscillator 40 originally has characteristics, and for example, it is preferable to use one having an oscillation frequency of 32,768 Hz. The oscillation circuit 31 outputs a signal corresponding to the oscillation of the crystal oscillator 40. This signal is converted into a clock signal by the frequency dividing circuit 32. Further, the counter 33 counts the number of clock signals. Then, the control unit 34 outputs a drive signal to the motor drive circuit 35 according to the count number of the clock signals counted by the counter 33. The motor drive circuit 35 drives the stepping motor 36 based on the drive signal. When the stepping motor 36 is driven, the time display unit 37 displays the time. Specifically, the time display unit 37 displays the time by the hour hand 5, the minute hand 6, and the second hand 7 described above.

Here, the oscillation frequency of the crystal oscillator 40 is temperature-dependent, and the oscillation frequency fluctuates depending on the temperature of the environment in which the electronic clock 1 is used. If the oscillation frequency fluctuates, the rate of the electronic clock 1 will shift. In order to correct the rate deviation caused by the temperature characteristics of the crystal unit 40, it is necessary to perform so-called temperature compensation according to the temperature of the environment in which the electronic clock 1 is used. The step rate indicates the degree of advancement or delay of the time in a certain period.

In this embodiment, an example using the crystal oscillator 40 will be described, but the present invention is not limited to this, and another oscillator or oscillator having a temperature characteristic may be used. For example, a MEMS (Micro Electro Mechanical Systems) oscillator, a ceramic oscillator, or the like may be used as the oscillator.

The temperature measuring unit 38 measures the temperature of the operating environment of the electronic clock 1. The temperature recording unit 41 records the temperature measured by the temperature measuring unit 38.

The temperature compensation circuit 39 stores the temperature compensation conditions according to the temperature characteristics of the crystal unit 40. The operation of the temperature compensation circuit 39 is controlled by the control unit 34, and the temperature compensation is performed based on the temperature compensation conditions and the temperature of the operating environment of the electronic clock 1 measured by the temperature measurement unit 38. Specifically, at least one of the oscillation frequency of the oscillation circuit 31 and the division ratio of the frequency division circuit 32 is corrected based on the temperature compensation condition and the temperature of the operating environment of the electronic clock 1 measured by the temperature measurement unit 38. By doing so, the rate deviation that occurs based on the temperature characteristics of the crystal oscillator 40 is corrected.

FIG. 3 is a diagram showing an example of the temperature characteristics of the crystal unit. The temperature characteristics of the crystal unit 40 can be predicted in advance, and can be represented by a function showing a quadratic curve. It is preferable to use a tuning fork type crystal unit as a crystal unit having a temperature characteristic that can be represented by a function showing a quadratic curve. In FIG. 3, the horizontal axis represents the temperature (° C.) and the vertical axis represents the rate deviation (ppm [parts per million]). In the first embodiment, as shown in FIG. 3, the crystal oscillator 40 has a characteristic that the step deviation is the smallest at room temperature (about 25 ° C.) and the step deviation is large when the temperature is higher or lower than the room temperature. Is used.

On the other hand, as shown in FIG. 2, the mobile terminal 20 has a GPS (Global Positioning System) receiving unit 21, a reference time generating unit 22, and a step deviation amount acquisition unit 23.

The mobile terminal 20 receives satellite radio waves transmitted from GPS satellites by a GPS receiving unit 21 including an antenna. GPS is a kind of satellite positioning system, and is realized by a plurality of GPS satellites orbiting the earth. Each of these GPS satellites is equipped with a high-precision atomic clock, and periodically transmits satellite signals including time information measured by the atomic clock. The mobile terminal 20 generates a reference time by the reference time generation unit 22 based on the radio waves received from the GPS satellites. The mobile terminal 20 is not limited to receiving satellite radio waves from GPS satellites. For example, the mobile terminal 20 may receive radio waves including time information transmitted from a base station of a mobile phone company or the like.

Further, the mobile terminal 20 transmits the information regarding the reference time generated by the reference time generation unit 22 to the electronic clock 1 by short-range wireless communication. As a result, the internal time of the electronic clock 1 is synchronized with the reference time and is kept accurate. At this time, after the clock signal for timing the reference time of the mobile terminal 20 is generated, the clock signal for timing the internal time of the electronic clock 1 generated at the nearest timing may be synchronized with the clock signal for timing the reference time. If the electronic clock 1 has a step difference, the difference between the internal time of the electronic clock 1 and the reference time becomes large unless the electronic clock 1 and the mobile terminal 20 are connected to each other for a long time by short-range wireless communication.

The amount of correction of the internal time when the internal time is synchronized with the reference time by the communication connection between the mobile terminal 20 and the electronic clock 1 is the amount of time lag of the internal time. The rate deviation amount acquisition unit 23 acquires the rate deviation amount of the electronic clock 1. Specifically, the step deviation amount acquisition unit 23 acquires the step deviation amount based on the time deviation amount (correction amount) of the internal time and the period in which the time deviation occurs.

Here, as described above, in the electronic timepiece 1, temperature compensation is performed based on the temperature compensation conditions. The amount of information that can be stored in the electronic clock 1 is limited, and it is difficult to store highly accurate temperature compensation conditions that can widely respond to the temperature trends of the usage environment.

Therefore, in the temperature compensation system 100 according to the first embodiment, as shown in FIG. 2, the mobile terminal 20 further includes a temperature acquisition unit 24, a temperature compensation condition storage unit 25, and a switching unit 26. The temperature acquisition unit 24, the temperature compensation condition storage unit 25, and the switching unit 26 may be stored when the application is installed in the memory or the like provided in the mobile terminal 20. The operation of the installed application may be controlled by a CPU (Central Processing Unit) included in the mobile terminal 20.
(~ 0047: B-2)

The temperature compensation condition storage unit 25 stores a plurality of temperature compensation conditions according to the temperature characteristics of the crystal unit 40. In the first embodiment, an example in which the temperature compensation condition storage unit 25 stores the three temperature compensation conditions shown in FIGS. 4 to 6 will be described. FIG. 4 is a diagram showing an example of compensation conditions for low temperature. FIG. 5 is a diagram showing an example of compensation conditions for medium temperature. FIG. 6 is a diagram showing an example of compensation conditions for high temperature. Each temperature compensation condition consists of a table in which the temperature and the correction value of the rate are associated with each other. For example, in FIG. 4, when the temperature of the usage environment of the electronic clock 1 is 0 ° C., the step correction value corresponding to the step deviation amount of the crystal oscillator 40 is set to 615 ppm, and when the temperature is 30 ° C., the step correction value is set. It is shown to be 15 ppm. Each of FIGS. 4 to 6 is a temperature compensation condition for the crystal unit 40 having the temperature characteristics shown in FIG. 3, and shows a temperature compensation condition that can be handled in an environment of 0 ° C. to 50 ° C.

Here, if a large amount of information is provided in the temperature compensation condition, the accuracy of the temperature compensation becomes high, but the amount of information that can be stored in the electronic clock 1 is limited. For example, if temperature compensation is performed based on a temperature compensation condition in which correction values at each temperature from 0 ° C. to 50 ° C. are associated with each 1 ° C., highly accurate temperature compensation can be performed. It is difficult to store it in the electronic clock 1. Therefore, in the first embodiment, the temperature compensation can be performed by using the temperature compensation conditions suitable for the temperature of the usage environment of the electronic clock 1 without increasing the amount of information stored in the electronic clock 1. did.

As shown in FIG. 4, under the low temperature compensation condition, the temperature interval between 9 ° C. and 21 ° C. was set as a dense region. That is, in the region of 9 ° C. to 21 ° C., the accuracy of temperature compensation was increased, and in the other regions, the accuracy of temperature compensation was coarsened.

As shown in FIG. 5, under the compensation conditions for medium temperature, the temperature interval between 19 ° C. and 31 ° C. was set as a dense region. That is, in the region of 19 ° C. to 31 ° C., the accuracy of temperature compensation was increased, and in the other regions, the accuracy of temperature compensation was coarsened.

As shown in FIG. 6, under the high temperature compensation condition, the temperature interval between 29 ° C. and 41 ° C. was set as a dense region. That is, in the region of 29 ° C. to 41 ° C., the accuracy of temperature compensation was increased, and in the other regions, the accuracy of temperature compensation was coarsened.

The temperature acquisition unit 24 acquires the temperature of the operating environment of the electronic clock 1 measured by the temperature measurement unit 38 of the electronic clock 1 by short-range wireless communication. The temperature acquisition unit 24 may directly acquire the temperature of the operating environment from the temperature measuring unit 38, or may acquire the temperature of the operating environment once recorded in the temperature recording unit 41. The electronic clock 1 may include a temperature notification unit that notifies the mobile terminal 20 of the temperature of the usage environment measured by the temperature measurement unit 38. In the first embodiment, the temperature acquisition unit 24 acquires the median temperature of the operating environment of the electronic clock 1 measured a plurality of times by the temperature measuring unit 38 as a tendency of the temperature under the operating environment.

When the median temperature acquired by the temperature acquisition unit 24 is 20 ° C. or lower, the switching unit 26 may select the low temperature compensation condition shown in FIG. Further, when the median temperature acquired by the temperature acquisition unit 24 is larger than 20 ° C. and smaller than 30 ° C., the switching unit 26 may select the medium temperature compensation condition shown in FIG. Further, when the median temperature acquired by the temperature acquisition unit 24 is 30 ° C. or higher, the switching unit 26 may select the high temperature compensation condition shown in FIG. The temperature tendency of the environment in which the electronic clock 1 is used is not limited to the median value, and may be an average value or a mode value.

The mobile terminal 20 transmits the temperature compensation condition selected by the switching unit 26 to the temperature compensation circuit 39 of the electronic watch 1 by short-range wireless communication. The electronic clock 1 may include a temperature compensation condition acquisition unit that acquires the temperature compensation condition selected by the switching unit 26. Then, the temperature compensation circuit 39 stores the temperature compensation conditions transmitted from the mobile terminal 20, and performs temperature compensation using the temperature compensation conditions. When the usage environment changes, that is, when the median temperature of the electronic clock 1 acquired by the temperature acquisition unit 24 changes, the temperature compensation condition transmitted by the switching unit 26 to the electronic clock 1 is switched accordingly. It is good.

As described above, in the first embodiment, the mobile terminal 20 selects the temperature compensation condition suitable for the usage environment of the electronic watch 1, and the temperature compensation circuit 39 of the electronic watch 1 uses the selected temperature compensation condition. Performs temperature compensation. With such a configuration, it is possible to perform highly accurate temperature compensation according to the usage environment of the crystal oscillator 40 without increasing the amount of information stored in the electronic clock 1. Further, in the first embodiment, since the amount of information on the temperature compensation condition can be reduced, it is possible to suppress an increase in the amount of communication when the temperature compensation condition is transmitted from the mobile terminal 20 to the electronic watch 1 by short-range wireless communication. .. When the temperature compensation condition is transmitted from the mobile terminal 20 to the electronic watch 1 and the temperature compensation circuit 39 acquires the temperature compensation condition, the temperature recording unit 41 may erase the recorded temperature data. After that, the temperature recording unit 41 newly records the temperature of the operating environment measured by the temperature measuring unit 38, and the mobile terminal 20 may perform an operation of selecting the optimum temperature compensation condition based on the temperature of the operating environment.

In the first embodiment, an example in which the temperature compensation condition storage unit 25 stores three temperature compensation conditions and the switching unit 26 selects one of them has been described, but the present invention is not limited to this. .. For example, the temperature compensation condition storage unit 25 may store one high-resolution table including all the association data between the temperature and the correction value included in the tables shown in FIGS. 4 to 6. Then, even if the generation unit 27 shown in FIG. 2 extracts a part of the association data and generates the temperature compensation condition based on the temperature tendency of the usage environment of the electronic clock 1 acquired by the temperature acquisition unit 24. Good. Specifically, for example, if the median temperature acquired by the temperature acquisition unit 24 is 38 ° C., the generation unit 27 may generate a temperature compensation condition in which the temperature section near 38 ° C. is a dense region. Then, when the temperature compensation condition storage unit 25 stores the temperature compensation condition generated by the generation unit 27 and the temperature compensation condition transmitted by the switching unit 26 to the electronic clock 1 is switched to the temperature compensation condition generated by the generation unit 27. Good. With such a configuration, it is possible to perform more accurate temperature compensation according to the temperature environment without increasing the amount of information stored in the electronic timepiece 1.

Further, in FIGS. 4 to 6, an example in which the temperature compensation condition storage unit 25 stores the temperature compensation condition in which the temperature of the usage environment and the correction value are discretely associated with each other has been described, but the present invention is not limited to this. Absent. For example, information in which the relationship between the temperature of the usage environment and the correction value is continuously associated as a quadratic function is stored in advance in the mobile terminal 20, and the generation unit 27 measures the temperature of the usage environment measured by the temperature measurement unit 38. Based on the temperature tendency, a temperature compensation condition in which the temperature of the usage environment and the correction value are discretely associated with each other may be generated from the quadratic function. Specifically, it is preferable to generate a temperature compensation condition such that the temperature tendency of the usage environment corresponds to a region where the temperature interval is dense. By storing the information for generating the temperature compensation condition as a quadratic function, it is possible to select the temperature compensation condition with higher accuracy according to the usage environment.

Further, a modified example of the first embodiment will be described with reference to FIGS. 7 to 11. The same reference numerals are used for the same configurations as those described in the first embodiment, and the description thereof will be omitted.

FIG. 7 is a diagram showing an example of the temperature characteristics of the crystal unit. FIG. 8 is a diagram showing an example of relative temperature compensation conditions. FIG. 9 is a diagram showing an example of compensation conditions for low temperature. FIG. 10 is a diagram showing an example of compensation conditions for medium temperature. FIG. 11 is a diagram showing an example of compensation conditions for high temperature.

Also in the modified example, as shown in FIG. 7, a crystal oscillator 40 having a characteristic that the step deviation is the smallest at room temperature (about 25 ° C.) and the step deviation is large when the temperature is higher or lower than the room temperature is used. .. On the other hand, in the modified example, the temperature range of the operating environment that can be handled is wider than that of the first embodiment shown in FIG. Specifically, in the first embodiment, the temperature range of the applicable operating environment is set to 0 ° C. to 50 ° C., but in the modified example, as shown in FIG. 7, the temperature of the applicable operating environment is set. The range of the temperature was -15 ° C to 65 ° C.

In the modified example, the temperature compensation condition storage unit 25 stores the relative temperature compensation condition shown in FIG. As shown in FIG. 8, the relative temperature compensation condition comprises a table in which the relative temperature (° C.) with respect to the median temperature of the operating environment of the electronic clock 1 and the correction value (ppm) of the rate are associated with each other. In the modified example, the generation unit 27 generates the temperature compensation condition based on the median temperature of the operating environment of the electronic clock 1 and the relative temperature compensation condition.

In the relative temperature compensation condition, the number of relative temperature data was fixed, and the low temperature correction value, the medium temperature correction value, and the high temperature correction value were associated with the relative temperature. Then, as shown in FIG. 8, when the relative temperature was −6 ° C. to 6 ° C., the temperature interval was made dense. Then, the higher or lower the relative temperature, the sparser the temperature interval. As described above, in the modified example, the relative temperature compensation condition is set so that the accuracy of the temperature compensation becomes high at the temperature relatively close to the median. The relative temperature range was −30 ° C. to 30 ° C.

FIG. 9 shows the low temperature compensation conditions generated by the generation unit 27 when the median temperature acquired by the temperature acquisition unit 24 is 15 ° C. (low temperature). Under the low temperature compensation condition, the temperature interval at 9 ° C. to 21 ° C. corresponding to the deviation from the median value of 15 ° C. of −6 ° C. to 6 ° C. is a dense region. That is, the accuracy of temperature compensation is high in the region of 9 ° C. to 21 ° C., and the accuracy of temperature compensation is coarse in other regions. Under the low temperature compensation condition where the median value is 15 ° C., the temperature range of the operating environment that can be used is −15 ° C. to 45 ° C.

FIG. 10 shows the compensation conditions for medium temperature generated by the generation unit 27 when the median temperature acquired by the temperature acquisition unit 24 is 25 ° C. (medium temperature). Under the medium temperature compensation condition, the temperature interval at 19 ° C. to 31 ° C. corresponding to the deviation from the median 25 ° C. of −6 ° C. to 6 ° C. is a dense region. That is, the accuracy of temperature compensation is high in the region of 19 ° C. to 31 ° C., and the accuracy of temperature compensation is coarse in other regions. Under the medium temperature compensation condition where the median value is 25 ° C., the temperature range of the operating environment that can be handled is −5 ° C. to 55 ° C.

FIG. 11 shows the high temperature compensation condition generated by the generation unit 27 when the median temperature acquired by the temperature acquisition unit 24 is 35 ° C. (high temperature). Under the high temperature compensation condition, the temperature interval at 29 ° C. to 41 ° C. corresponding to the deviation from the median 35 ° C. of −6 ° C. to 6 ° C. is a dense region. That is, the accuracy of temperature compensation is high in the region of 29 ° C. to 41 ° C., and the accuracy of temperature compensation is coarse in other regions. Under the high temperature compensation condition where the median value is 35 ° C., the temperature range of the operating environment that can be supported is 5 ° C. to 65 ° C.

In the modified example, when the median temperature acquired by the temperature acquisition unit 24 is 20 ° C. or less, the temperature at which the generation unit 27 generates the low temperature compensation condition shown in FIG. 9 and the switching unit 26 transmits the temperature to the electronic watch 1. As the compensation condition, the low temperature compensation condition shown in FIG. 9 may be selected. When the median temperature acquired by the temperature acquisition unit 24 is greater than 20 ° C. and smaller than 30 ° C., the generation unit 27 generates the medium temperature compensation condition shown in FIG. 10, and the switching unit 26 transmits the temperature to the electronic watch 1. As the temperature compensation condition, the medium temperature compensation condition shown in FIG. 10 may be selected. When the median temperature acquired by the temperature acquisition unit 24 is 30 ° C. or higher, the generation unit 27 generates the high temperature compensation condition shown in FIG. 11, and the switching unit 26 transmits the temperature compensation condition to the electronic watch 1. The high temperature compensation condition shown in FIG. 11 may be selected.

As described above, in the modified example, since the number and the value of the relative temperature are fixed, the value stored in the electronic clock 1 is only the median value and the correction amount at each relative temperature. The amount of information stored in the temperature condition storage unit 25 can be reduced as compared with the configuration of. Therefore, it is possible to widen the temperature range of the operating environment that can be handled without increasing the amount of information. Further, one high-resolution table including all the association data between the temperature and the correction value included in the tables shown in FIGS. 8 to 11 may be stored. Then, even if the generation unit 27 shown in FIG. 2 extracts a part of the association data and generates the temperature compensation condition based on the temperature tendency of the usage environment of the electronic clock 1 acquired by the temperature acquisition unit 24. Good.

In the first embodiment and its modifications, the electronic watch 1 may store a plurality of temperature compensation conditions transmitted from the mobile terminal 20. With such a configuration, even if the communication connection between the electronic watch 1 and the mobile terminal 20 is not performed for a long period of time, the temperature compensation condition used by the electronic watch 1 can be switched according to the temperature of the usage environment. Good. Although the amount of information that can be stored in the electronic clock 1 is limited, the electronic clock 1 can store a plurality of temperature compensation conditions by using the temperature compensation conditions with a small amount of information described in the first embodiment and its modification. It will be possible to keep it.

Next, the second embodiment will be described with reference to FIG. FIG. 12 is a diagram for explaining the tendency of the temperature in the usage environment and the acquisition of the step deviation amount in the second embodiment. Since the overall configuration of the temperature compensation system 100 according to the second embodiment is the same as that of the first embodiment described with reference to FIG. 2, the description thereof will be omitted by using the same reference numerals for the same configuration.

The temperature acquisition unit 24 acquires the temperature of the operating environment of the electronic clock 1. Further, the step deviation amount acquisition unit 23 acquires the time deviation amount at the time when the temperature of the usage environment of the electronic clock 1 is acquired. FIG. 12 shows an example in which the time lag amount is acquired a plurality of times until the cumulative time lag amount reaches 5 seconds. As shown in FIG. 12, due to the advance / lag of the internal clock of the clock itself and the jitter of the time synchronization accuracy of the mobile terminal 20, the time seen from the mobile terminal 20 side repeatedly advances and decreases, and the time gradually increases. The amount of deviation increases. The step deviation amount acquisition unit 23 acquires the step deviation amount based on the cumulative time deviation amount and the period required to reach the cumulative time deviation amount. The internal time of the electronic clock 1 is adjusted each time it is connected to the mobile terminal 20, and the mobile terminal 20 accumulates and stores the amount of time lag at that time. If the temperature compensation has already been performed before the time deviation amount is acquired, it is advisable to subtract the already corrected correction amount to acquire the step deviation amount. Further, in FIG. 12, the minimum temperature acquired by the temperature acquisition unit 24 is 24 ° C., the maximum temperature is 29 ° C., and the average temperature is 26. An example of the case where the temperature was 5 ° C. is shown.

In the second embodiment, the step deviation amount acquired by the step deviation amount acquisition unit 23 is estimated to be the step deviation amount (correction value) when the temperature of the usage environment of the electronic timepiece 1 is 26.5 ° C.

Although the average value of the minimum temperature and the maximum temperature is used as the average temperature here, the average temperature is not limited to this, and any temperature tendency of the operating environment of the electronic clock 1 may be used. For example, the average value of all the temperatures acquired by the temperature acquisition unit 24 may be used. Further, the temperature is not limited to the average temperature, and the median value or the mode value of all the temperatures acquired by the temperature acquisition unit 24 may be used.

In the second embodiment, the accuracy of the temperature compensation condition is improved based on the temperature tendency of the usage environment of the electronic clock 1 and the estimated correction value. Specifically, the currently estimated temperature characteristics of the crystal oscillator 40 are adjusted (corrected) with respect to the actual temperature characteristics of the crystal oscillator 40. Hereinafter, the currently estimated temperature characteristic of the crystal unit 40 will be referred to as a holding temperature characteristic. The generation unit 27 generates a new holding temperature characteristic in which the holding temperature characteristic is modified, and a temperature compensation condition according to the modified holding temperature characteristic, based on the temperature tendency of the usage environment and the amount of step deviation. The temperature compensation condition can be represented by a line-symmetrical quadratic curve with the horizontal axis as the axis of symmetry with respect to the quadratic curve showing the holding temperature characteristic. The generated temperature compensation condition is stored in the temperature compensation condition storage unit 25. Then, the switching unit 26 may select the latest temperature compensation condition with the highest accuracy. Further, the temperature compensation condition selected by the switching unit 26 may be transmitted from the mobile terminal 20 to the electronic watch 1 by short-range wireless communication.

Hereinafter, with reference to FIGS. 13 to 20, it will be described how the holding temperature characteristic approaches the actual temperature characteristic of the crystal oscillator 40 by performing the adjustment a plurality of times. FIG. 13 is a diagram showing the holding temperature characteristic and the actual temperature characteristic of the crystal unit in the second embodiment. 14 to 20 are views for explaining the integration of the holding temperature characteristics in the second embodiment.

In FIG. 13, the quadratic curve T1 shows the holding temperature characteristic, and the quadratic curve R shows the actual temperature characteristic of the crystal unit 40. The oscillation frequency of the crystal oscillator 40 fluctuates according to the temperature of the usage environment. The tendency of the oscillation frequency that fluctuates according to the temperature of the usage environment is predicted in advance, and the temperature compensation conditions are set, but the accuracy of the prediction of the temperature characteristic R of the crystal oscillator 40 at the time of manufacturing is limited. In addition, the temperature characteristic R of the crystal oscillator 40 may fluctuate when the electronic clock 1 is repaired. Therefore, the preset temperature compensation conditions may deviate from the actual temperature characteristics of the crystal unit 40. If the actual temperature characteristics of the crystal unit 40 and the temperature compensation conditions deviate from each other, it is not possible to perform highly accurate temperature compensation. FIG. 13 shows a state in which the actual temperature characteristic R of the crystal unit 40 and the preset holding temperature characteristic T1 deviate from each other.

In the second embodiment, an example will be described in which a function representing the actual temperature characteristics of the crystal unit 40 is known in advance. That is, the actual temperature characteristic of the crystal transducer 40 is y = f (x) = −a × (x−c) ² + b (when the temperature is c, the step deviation is the smallest and the value is d). When expressed by a quadratic function, the holding temperature characteristic is y = f (x) = −a × (x−d) ² + e (at temperature d, the step deviation is the smallest and its value is e). It is expressed by the following function.

In FIGS. 14 to 20, the maximum temperature acquired by the temperature acquisition unit 24 is indicated by “Max”, the minimum temperature is indicated by “Min”, and the average temperature of the maximum temperature and the minimum temperature is indicated by “Tgt”. Further, points A shown in FIGS. 14 to 20 indicate the amount of step deviation at the average temperature acquired by the temperature acquisition unit 24, which was described with reference to FIG.

In the second embodiment, the holding temperature characteristic is modified according to the point A, and the modification is performed a plurality of times to gradually bring the holding temperature characteristic closer to the actual temperature characteristic of the crystal unit 40. Specifically, in the second embodiment, the holding temperature characteristic is moved by a predetermined amount on the normal L of the holding temperature characteristic passing through the point A. Here, the vector of the moving direction (correction direction) was defined as V, and the absolute value of the value αV obtained by multiplying the vector V by an appropriate coefficient α (0 <α <1) was defined as the moving amount (correction amount).

The holding temperature characteristic T2 shown in FIG. 14 is obtained by moving the holding temperature characteristic T1 by a predetermined amount on the normal line L of the holding temperature characteristic T1 passing through the point A. By repeating such movement, the holding temperature characteristic is corrected so as to approach the actual temperature characteristic of the crystal unit 40.

The holding temperature characteristic T3 shown in FIG. 15 is obtained by moving the holding temperature characteristic T2 by a predetermined amount on the normal line L of the holding temperature characteristic T2 passing through the point A. The holding temperature characteristic T4 shown in FIG. 16 is obtained by moving the holding temperature characteristic T3 by a predetermined amount on the normal line L of the holding temperature characteristic T3 passing through the point A. The holding temperature characteristic T5 shown in FIG. 17 is obtained by moving the holding temperature characteristic T4 by a predetermined amount on the normal line L of the holding temperature characteristic T4 passing through the point A. The holding temperature characteristic T6 shown in FIG. 18 is obtained by moving the holding temperature characteristic T5 by a predetermined amount on the normal line L of the holding temperature characteristic T5 passing through the point A. The holding temperature characteristic T7 shown in FIG. 19 is obtained by moving the holding temperature characteristic T6 by a predetermined amount on the normal line L of the temperature compensation condition T6 passing through the point A. The holding temperature characteristic T8 shown in FIG. 20 is obtained by moving the holding temperature characteristic T7 by a predetermined amount on the normal line L of the holding temperature characteristic T7 passing through the point A.

As described above, the holding temperature characteristic is close to the actual temperature characteristic of the crystal oscillator 40 by repeatedly correcting the holding temperature characteristic according to the step deviation amount at the average temperature acquired by the temperature acquisition unit 24. It becomes. By performing temperature compensation using the temperature compensation conditions based on the holding temperature characteristics modified in this way, it is possible to perform highly accurate temperature compensation according to the actual temperature characteristics of the crystal unit 40. The correction amount and correction direction of the holding temperature characteristics described here are examples, and are not limited to these. The correction amount and correction direction of the holding temperature characteristic may be set based on the temperature tendency of the usage environment acquired by the temperature acquisition unit 24 and the rate deviation amount acquired by the rate deviation amount acquisition unit 23. ..

In the second embodiment, the accuracy of the temperature compensation condition is optimized as the electronic clock 1 is continuously used. As a result, highly accurate temperature compensation can be performed regardless of the accuracy of predicting the temperature characteristics of the crystal unit 40 before the product is shipped. Further, it is possible to perform highly accurate temperature compensation even if the manufacturer or the like predicts the temperature characteristics of the crystal oscillator 40 in advance before shipping the electronic watch 1 and does not generate the temperature compensation conditions corresponding to the temperature characteristics. You will be able to do it. Therefore, the burden on the manufacturer or the like before shipment is reduced, and it is possible to ship a new product or the like whose temperature characteristics of the crystal oscillator are unknown at an early stage.

In the second embodiment, when the electronic clock 1 is used for a certain period of time, the user may be notified of the monthly difference of the current electronic clock 1. Further, when the number of communication connections between the electronic watch 1 and the mobile terminal 20 is small and the accuracy of temperature compensation is not sufficient, it is preferable to configure the configuration to notify the user to connect. The notifications may be displayed on a display included in the mobile terminal 20 or the electronic clock 1, for example, so that the user can confirm them.

Further, in the second embodiment, the case where the quadratic function representing the actual temperature characteristic of the crystal oscillator 40 is known in advance has been described, but the present invention is not limited to this. That is, even when the shape of the curve representing the actual temperature characteristic of the crystal unit 40 is not known in advance, the holding temperature characteristic may be generated from the measured temperature and the amount of step deviation. Hereinafter, a modified example of the second embodiment will be specifically described with reference to FIG. 21.

FIG. 21 is a diagram showing the holding temperature characteristic and the actual temperature characteristic of the crystal unit in the modified example of the second embodiment.

For example, a plurality of measurement data regarding the amount of step deviation at the average temperature acquired by the temperature acquisition unit 24, which was described with reference to FIG. 12, are acquired, and the generation unit 27 two-dimensionally plots the measurement data and plots the plurality of points. It is advisable to estimate and generate a curve representing the holding temperature characteristics by connecting the above. FIG. 21 shows an example in which six measurement data are acquired and they are connected to generate a curve representing the holding temperature characteristic T.

Alternatively, on the assumption that the actual temperature characteristic R of the crystal transducer 40 can be represented by a predetermined Nth-order polynomial (N is a natural number of 1 or more) such as a quadratic polynomial or a cubic polynomial, the same as above. It is preferable to acquire a plurality of measurement data, and the generation unit 27 plots the measurement data in two dimensions and performs regression analysis to generate the holding temperature characteristic T. Examples of the oscillator or oscillator having a temperature characteristic that can be represented by a cubic polynomial include an AT-cut type crystal oscillator and the like, and an oscillator or oscillator having a temperature characteristic that can be represented by a first-order polynomial. For example, there is a ceramic oscillator (for example, Ceralock (registered trademark)) and the like. Regression analysis may be performed after weighting each of the plurality of acquired measurement data. For example, when the difference between the maximum value and the minimum value of the temperature when the average value of the temperature is acquired is more than a certain value, the weight of the measured data may be lowered or it may not be used as invalid data. Further, for example, it is not necessary to lower the weight of the acquired data having an old acquisition date or use it as invalid data.

After generating the curve related to the holding temperature characteristic T in this way, the holding temperature characteristic T is adjusted to the actual temperature characteristic R of the crystal oscillator 40 in the same manner as described with reference to FIGS. 13 to 20. However, the accuracy of the temperature compensation at the beginning of the use of the electronic clock 1 is not sufficient, but the temperature compensation with high accuracy can be performed by continuing the use.

The modification of the holding temperature characteristic described in the second embodiment may be performed in combination with the first embodiment. That is, a plurality of temperature compensation conditions are stored in the temperature compensation condition storage unit 25, and the switching unit 26 selects, and further selects, the temperature compensation condition suitable for the temperature of the operating environment among the plurality of temperature compensation conditions. It is advisable to adjust the holding temperature characteristics corresponding to the temperature compensation conditions to the actual temperature characteristics of the crystal oscillator 40. This makes it possible to perform more accurate temperature compensation.

Further, the generation of the holding temperature characteristic described in the modified example of the second embodiment may be performed in combination with the first embodiment. That is, the generation unit 27 plots the measurement data in two dimensions, generates a quadratic function representing the holding temperature characteristic, and the temperature tendency of the usage environment measured by the temperature measurement unit 38 based on the quadratic function is the temperature. It is advisable to generate temperature compensation conditions that correspond to regions with dense sections.

In the above embodiment, an example in which the mobile terminal 20 generates the temperature compensation condition has been described, but the present invention is not limited to this, and the mobile terminal 20 stores a database for storing the temperature compensation condition via the network. The configuration may be such that the server is accessed and the temperature compensation conditions are acquired from the database. In that case, for example, the generation unit provided in the server managed by the manufacturer or the like deviates from each of the electronic clocks 1 provided with the crystal oscillator 40 having the same temperature characteristics used by a plurality of users in the temperature and rate of the usage environment. It is advisable to acquire the data regarding the temperature compensation condition and generate the temperature compensation condition based on the acquired data. Specifically, it is preferable to generate the temperature compensation condition by performing regression analysis or the like based on the data acquired from each of the electronic clocks 1 used by the plurality of users. Then, the generated temperature compensation condition may be distributed to each mobile terminal 20 capable of communicating with each electronic clock 1 used by the plurality of users, and stored in the temperature compensation condition storage unit 25 of the mobile terminal 20. .. This makes it possible to generate accurate temperature compensation conditions even when the temperature characteristics of the crystal unit 40 cannot be predicted in advance, such as in a new product. Further, it is possible to provide accurate temperature compensation conditions even to a user whose connection frequency between the electronic watch 1 and the mobile terminal 20 is low.

Further, based on the data acquired from each of the electronic clocks 1 used by the plurality of users, the information in which the relationship between the temperature of the usage environment and the correction value is continuously associated as a quadratic function is acquired, and the generation unit 27 However, based on the tendency of the temperature of the usage environment measured by the temperature measuring unit 38, the temperature compensation condition in which the temperature of the usage environment and the correction value are discretely associated with each other may be generated from the quadratic function. Specifically, it is preferable to generate a temperature compensation condition such that the temperature tendency of the usage environment corresponds to a region where the temperature interval is dense. As a result, it is possible to perform highly accurate temperature compensation according to the usage environment of the crystal oscillator 40 without increasing the amount of information stored in the electronic clock 1.

Although the embodiment according to the present invention has been described above, the specific configuration shown in this embodiment is shown as an example, and it is not intended to limit the technical scope of the present invention to this. Those skilled in the art may appropriately modify these disclosed embodiments, and it should be understood that the technical scope of the invention disclosed herein also includes such modifications.

1 Electronic clock, 2 Crown, 3 Push button, 4 Dial, 5 hour hand, 6 minute hand, 7 second hand, 8 connection processing display, 9 link loss display, 10 email reception display, 11 incoming call display, 20 mobile terminal, 21 GPS receiver, 22 reference time generator, 24 temperature acquisition unit, 25 temperature compensation condition storage unit, 26 switching unit, 27 generator unit, 31 oscillator circuit, 32 frequency division circuit, 33 counter, 34 control unit, 35 motor drive circuit , 36 Stepping motor, 37 Time display unit, 38 Temperature measurement unit, 39 Temperature compensation circuit, 40 Crystal oscillator, 41 Temperature recording unit.

Claims (14)

It can be connected to an electronic clock including an oscillator or oscillator by communication.
A temperature acquisition unit that acquires the temperature of the usage environment of the electronic clock measured by the temperature measurement unit included in the electronic clock, and a temperature acquisition unit.
A temperature compensation condition storage unit that stores temperature compensation conditions according to the temperature characteristics of the oscillator or oscillator, and a temperature compensation condition storage unit.
A switching unit that switches the temperature compensation condition used for temperature compensation performed by the temperature compensation circuit provided in the electronic clock based on the temperature tendency of the usage environment acquired by the temperature acquisition unit.
Mobile terminals including. The temperature compensation condition storage unit stores a plurality of the temperature compensation conditions in which the temperature of the usage environment and the correction value of the rate of the electronic clock are associated with each other and the regions having dense temperature sections are different from each other.
The switching unit according to claim 1, wherein the temperature tendency of the usage environment acquired by the temperature acquisition unit is switched to a temperature compensation condition corresponding to a region where the temperature section is dense, among the plurality of temperature compensation conditions. Mobile terminal. A step deviation amount acquisition unit that acquires the step deviation amount of the electronic clock, and a step deviation amount acquisition unit.
A generation unit that generates a temperature compensation condition based on the temperature tendency of the usage environment acquired by the temperature acquisition unit and the rate deviation amount acquired by the rate deviation amount acquisition unit.
Including
The mobile terminal according to claim 1 or 2, wherein the temperature compensation condition storage unit stores the temperature compensation condition generated by the generation unit. A temperature compensation condition in which the temperature of the usage environment and the correction value of the rate of the electronic clock are associated with each other so that the temperature interval corresponding to the temperature tendency of the usage environment acquired by the temperature acquisition unit is a dense region. The mobile terminal according to claim 1, further comprising a generation unit that generates the temperature based on the function of the temperature of the usage environment and the correction value of the rate of the electronic clock. The generation unit two-dimensionally plots the temperature of the usage environment acquired by the temperature acquisition unit and the rate deviation amount acquired by the rate deviation acquisition unit, and the temperature is based on the two-dimensionally plotted data. The mobile terminal according to claim 3, which generates compensation conditions. The mobile terminal according to any one of claims 3 to 5, wherein the generation unit generates the temperature compensation condition according to a function indicating the temperature characteristic of the oscillator or the oscillator acquired in advance. The mobile phone according to claim 3, wherein the step deviation amount acquisition unit acquires the step deviation amount based on the time deviation of the internal time of the electronic watch with respect to the reference time of the mobile terminal and the period in which the time deviation occurs. Terminal. The mobile terminal according to claim 7, wherein the step deviation amount acquisition unit acquires the step deviation amount when the cumulative time deviation reaches a predetermined amount. The mobile terminal according to any one of claims 1 to 8, wherein the temperature tendency of the usage environment is an average value of the maximum temperature and the minimum temperature acquired by the temperature acquisition unit. The mobile terminal according to any one of claims 1 to 8, wherein the temperature tendency of the usage environment is the average value, the median value, or the mode value of the temperature acquired by the temperature acquisition unit. A program for causing a computer to function as a mobile terminal according to any one of claims 1 to 10. An electronic clock including an oscillator or an oscillator and a mobile terminal capable of communicating with the electronic clock are included.
The electronic clock has a temperature measuring unit that measures the temperature of the environment in which the electronic clock is used.
The mobile terminal
A temperature acquisition unit that acquires the temperature of the operating environment of the electronic watch measured by the temperature measurement unit, and a temperature acquisition unit.
A temperature compensation condition storage unit that stores temperature compensation conditions according to the temperature characteristics of the oscillator or oscillator, and a temperature compensation condition storage unit.
A switching unit that switches the temperature compensation conditions used for temperature compensation based on the temperature tendency of the usage environment acquired by the temperature acquisition unit.
Have,
The electronic clock has a temperature compensation circuit that performs temperature compensation based on the temperature compensation conditions switched by the switching unit.
Temperature compensation system. An electronic clock that includes an oscillator or oscillator and can be connected to a mobile terminal by communication.
A temperature acquisition unit that acquires the temperature of the environment in which the electronic clock is used, and
Temperature compensation conditions according to the temperature characteristics of the oscillator or oscillator, using the temperature compensation conditions switched based on the temperature tendency of the usage environment acquired by the temperature acquisition unit in the mobile terminal. The temperature compensation circuit that performs compensation and
Electronic clock with. A temperature notification unit that notifies the mobile terminal of the temperature of the usage environment acquired by the temperature acquisition unit, and
The temperature compensation condition acquisition unit that acquires the temperature compensation condition switched based on the temperature tendency of the usage environment notified by the temperature notification unit in the mobile terminal from the mobile terminal, and the temperature compensation condition acquisition unit.
The electronic clock according to claim 13.

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