JP6759597B2 - Electronic clock and control method of electronic clock - Google Patents

Description

The present invention relates to an electronic clock and a method for controlling the electronic clock.

Conventionally, an electronic clock capable of correcting a time difference by operating a button crown has been known (see, for example, Patent Document 1).
In the electronic clock of Patent Document 1, when the operation button is pressed, the second hand is moved to sequentially indicate the time difference display position of 3 seconds position, 5 seconds position, 8 seconds position, and so on, so that the time difference is +1 hour and the time difference is changed. The time difference display candidates are displayed in order, such as +2 hours, time difference +3 hours, and so on. The time difference and the time difference display position are stored in the time difference table. Then, when the operation button is pressed again, the electronic clock stops the second hand, stores the time difference corresponding to the time difference display position indicated by the second hand as the time difference set value, and displays the time based on the time difference set value. To do.

JP-A-2015-184106

However, since the time difference table cannot be rewritten in the electronic clock of Patent Document 1, a new time difference that is not included in the existing time difference is set in a country or region where the time difference is not set after the electronic clock is shipped. If this is done, or if the time difference in a given country or region is changed to a new time difference that is not included in the existing time difference, the new time difference cannot be reflected in the time difference table and the time cannot be adjusted with the new time difference. There is a problem. Further, when the existing time difference disappears, the non-existing time difference is displayed as a time difference display candidate, so that the non-existing time difference may be selected.

An object of the present invention is an electronic clock and a control method for an electronic clock that can correct the time with a new time difference when a new time difference occurs, and can avoid selecting a time difference that does not exist when the existing time difference disappears. Is to provide.

The electronic clock of the present invention has a display unit that displays the time, a rewritable storage unit that stores the time difference information, an operation unit that can perform a time difference selection operation for selecting the time difference information, and a time difference selection operation. , A manual time difference selection unit that selects one time difference information from the time difference information stored in the storage unit, a manual time difference correction unit that corrects the current time based on the selected time difference information, and the current time. It is characterized by including a display control unit for displaying on the display unit.

According to the present invention, when the time difference selection operation of the operation unit is performed, the manual time difference selection unit selects one time difference information from the time difference information stored in the storage unit in response to the time difference selection operation. Then, the manual time difference correction unit corrects the current time based on the selected time difference information. Then, the display control unit displays the current time on the display unit.
In the present invention, since the time difference information is stored in the rewritable storage unit, a new time difference that is not included in the existing time difference is set in a country or region where the time difference is not set after the electronic clock is shipped. In some cases, or when the time difference in a given country or region is changed to a new time difference that is not included in the existing time difference, the time difference information stored in the storage unit can be rewritten with the time difference information including the new time difference information. Yes, this allows you to correct the current time with a new time difference. Further, when the existing time difference disappears, the time difference information stored in the storage unit can be rewritten with the time difference information that does not include the lost time difference information, whereby it is possible to avoid selecting a time difference that does not exist. ..

It is preferable that the electronic clock of the present invention includes a pointer for displaying the time difference information, and the storage unit stores the time difference information and the designated position of the guideline corresponding to the time difference information.

According to the present invention, the guideline displays the time difference information by instructing the scale, for example, the designated position corresponding to the time difference information. According to this, when the user performs the time difference selection operation, the time difference information being selected can be confirmed, so that the time difference information can be easily selected.
Since the indicated position is stored in the rewritable storage unit, when a new time difference occurs, the time difference information and the indicated position stored in the storage unit are rewritten with the time difference information including the new time difference information and the indicated position. This allows new time difference information to be displayed. Further, when the existing time difference disappears, the time difference information and the indicated position stored in the storage unit can be rewritten with the time difference information and the indicated position that do not include the lost time difference information, whereby the time difference that does not exist can be rewritten. It can be avoided to be displayed.

In the electronic clock of the present invention, an index is assigned to the time difference information stored in the storage unit, and the time difference selection operation includes an up operation for selecting the time difference information having one larger index and the index. There is a down operation for selecting one smaller time difference information, and the manual time difference selection unit acquires the maximum value of the index, and when the time difference information with the maximum value of the index is selected, the up operation is performed. When detected, the time difference information having the minimum value of the index is selected, and when the down operation is detected when the time difference information having the minimum value is selected, the time difference information having the maximum value of the index is selected. Is preferable.

For example, the electronic clock has a selection table in which the time difference information selected when the up operation is performed and the time difference information selected when the down operation is performed are stored for each time difference information. When the manual time difference selection unit selects the time difference information according to this selection table, and when the time difference information in the storage unit is updated, it is necessary to update the selection table as well.
On the other hand, according to the present invention, even when the time difference information of the storage unit is updated, the updated time difference information can be selected in a predetermined order by acquiring the maximum value of the index. Therefore, since it is not necessary to have the selection table and it is not necessary to update the selection table, it is possible to easily update the time difference information in the electronic clock.

In the electronic clock of the present invention, a radio wave receiving unit capable of receiving a plurality of standard radio waves, a time information acquisition unit that acquires time information based on the standard radio waves, and a time for correcting the current time based on the time information. A correction unit is provided, the storage unit stores the time difference information and a standard radio wave corresponding to the time difference information, and the radio wave receiving unit receives a standard radio wave associated with the selected time difference information. It is preferable to perform the reception process.

According to the present invention, when the radio wave receiving unit receives a standard radio wave, the time information acquisition unit acquires time information based on the standard radio wave, and the time correction unit corrects the current time based on the acquired time information. To do.
The radio wave receiving unit performs reception processing for receiving the standard radio wave associated with the selected time difference information. Therefore, in the storage unit, by associating the time difference information with the standard radio wave that can be received in the area corresponding to the time difference information, the reception process for receiving the standard radio wave that cannot be received in the area is executed. Can be suppressed.
Here, changes are made to standard radio waves that can be received in areas corresponding to time difference information, such as new standard radio waves being set, the number of transmitting stations transmitting existing standard radio waves increasing, and the transmission area of standard radio waves expanding. Even if there is, the standard radio wave stored in the storage unit can be rewritten, so that the radio wave receiving unit can execute the reception process of receiving the standard radio wave reflecting the change.

In the electronic clock of the present invention, the storage unit stores time zone data including a region in which geographic information is divided and time difference information corresponding to the region, receives a satellite signal from a position information satellite, and receives the satellite signal. A satellite signal receiving unit that calculates and acquires position information based on a signal, and a positioning time difference selection unit that selects the time difference information corresponding to the area including the acquired position information from the time difference information of the time zone data. It is preferable to include a positioning time difference correction unit that corrects the current time based on the time difference information selected by the positioning time difference selection unit.

According to the present invention, when the satellite signal receiving unit receives the satellite signal and calculates and acquires the position information based on the satellite signal, the positioning time difference selection unit obtains the position information from the time difference information of the time zone data. Select the time difference information corresponding to the area containing. Then, the positioning time difference correction unit corrects the current time based on the selected time difference information.
According to the present invention, the electronic timepiece can automatically correct the current time with the time difference information corresponding to the current location by receiving the satellite signal without the user performing the time difference selection operation of the operation unit.
Here, in the present invention, since the time zone data is stored in the rewritable storage unit, the time difference is changed when the time difference is set in a country or region where the time difference is not set or in a predetermined country or region. Even if this is done, the time zone data stored in the storage unit can be rewritten, so the current time can be corrected with the time difference information that reflects these changes.

In the electronic clock of the present invention, the satellite signal receiving unit is configured to be able to receive the satellite signal from position information satellites of a plurality of satellite systems, and the storage unit corresponds to the time difference information and the time difference information. It is preferable that the type of the satellite system is stored and the satellite signal receiving unit performs a reception process of receiving the satellite signal from the position information satellite of the type of satellite system associated with the selected time difference information.

According to the present invention, the satellite signal receiving unit performs a reception process of receiving a satellite signal from a position information satellite of a type of satellite system associated with the selected time difference information. Therefore, in the storage unit, by associating the time difference information with the type of satellite system capable of receiving the satellite signal in the area corresponding to the time difference information, the position information satellite of the satellite system capable of receiving the satellite signal can be used as a satellite. The reception process for receiving the signal is executed. That is, in a time difference area where satellite signals can be received from the position information satellites of a plurality of types of satellite systems, it is possible to receive satellite signals from more position information satellites, so that the success probability of reception is improved or the reception is short. Efficient reception is possible, such as being able to receive at.
Here, even if a new satellite system is set up or the number of position information satellites of the existing satellite system increases and the type of satellite system that can receive satellite signals changes in the area corresponding to the time difference information, Since the type of satellite system stored in the storage unit can be rewritten, the satellite signal receiving unit can execute a reception process of receiving a satellite signal from the position information satellite of the type of satellite system in which the change is reflected.

In the electronic clock of the present invention, the time difference information and the daylight saving time information corresponding to the time difference information are stored in the daylight saving time switching unit for switching the setting of the daylight saving time to valid or invalid, and the manual time difference correction unit. , When the daylight saving time setting is valid, it is preferable to correct the current time based on the selected time difference information and the daylight saving time information associated with the selected time difference information.

According to the present invention, when the daylight saving time information associated with the time difference information is changed, the daylight saving time information stored in the storage unit can be rewritten, so that the current time is corrected by the daylight saving time information reflecting the change. it can.

The electronic clock of the present invention includes an input terminal to which time difference information is supplied from an external device, and a time difference rewriting unit that rewrites the time difference information stored in the storage unit with the time difference information supplied to the input terminal. Is preferable.

According to the present invention, the time difference information stored in the storage unit can be rewritten by supplying the time difference information from the external device to the input terminal. Therefore, for example, the electronic clock receives the time difference information by optical communication. As compared with the case of rewriting the time difference information stored in the storage unit with the time difference information, the time difference information can be rewritten at high speed, and the time required for rewriting can be shortened.

The electronic clock of the present invention includes a light receiving element and a detection circuit for detecting the output value of the light receiving element, and uses an optical receiving unit that receives time difference information by communication using light using the light receiving element, and the received time difference information. It is preferable to include a time difference rewriting unit that rewrites the time difference information stored in the storage unit.

According to the present invention, the time difference information stored in the storage unit can be rewritten by transmitting the time difference information to the electronic timepiece by optical communication from an external device. Therefore, for example, it is necessary to open the back cover of the electronic timepiece. There is no such thing, and rewriting work can be done easily.

The control method of the electronic clock of the present invention includes a display unit for displaying the time, a rewritable storage unit for storing the time difference information, and an operation unit capable of performing a time difference selection operation for selecting the time difference information. In the control method, a step of rewriting the time difference information stored in the storage unit and a step of selecting one time difference information from the time difference information stored in the storage unit in response to the time difference selection operation. It is characterized by including a step of correcting the current time based on the selected time difference information and a step of displaying the current time on the display unit.

According to the present invention, when a new time difference occurs after the electronic watch is shipped, the time difference information stored in the storage unit can be rewritten with the time difference information including the new time difference information, whereby the new time difference can be used at present. You can correct the time. Further, even if the existing time difference disappears, the time difference information stored in the storage unit can be rewritten with the time difference information that does not include the lost time difference information, thereby avoiding the selection of a time difference that does not exist. it can.

The front view of the electronic clock of 1st Embodiment which concerns on this invention. The cross-sectional view which shows the outline of the electronic clock in 1st Embodiment. The figure which shows the circuit structure of the electronic timepiece in 1st Embodiment. The figure which looked at the electronic timepiece in 1st Embodiment from the back cover side. The figure which shows the data structure of the RAM in 1st Embodiment. The figure which shows an example of the time zone setting data in 1st Embodiment. The figure which shows the change history of the time difference information. The figure which shows an example of the time zone setting data after the update in 1st Embodiment. The flowchart which shows the time difference information setting process in 1st Embodiment. The figure which shows the circuit structure of the electronic timepiece of the 2nd Embodiment which concerns on this invention. The figure which shows an example of the time zone setting data in 2nd Embodiment. The figure which shows an example of the time zone setting data after the update in 2nd Embodiment. The flowchart which shows the time adjustment processing in 2nd Embodiment. The figure which shows the communication system of the 3rd Embodiment which concerns on this invention. The figure explaining the communication method of the communication system in 3rd Embodiment. The front view of the electronic timepiece in the 3rd Embodiment. FIG. 5 is a cross-sectional view showing an outline of an electronic clock according to a third embodiment. The figure which shows the circuit structure of the electronic clock in 3rd Embodiment. The figure which shows the data structure of the storage device in 3rd Embodiment. The figure which shows an example of the time zone data in 3rd Embodiment. The figure for demonstrating the time zone data in 3rd Embodiment. The figure which shows the structure of the control circuit in 3rd Embodiment. The figure which shows the time zone setting data of the modification which concerns on this invention. The flowchart which shows the time difference information setting processing in the modification. The figure which shows the circuit structure of the electronic clock of another modification which concerns on this invention. The figure which shows the time zone setting data of still another modification which concerns on this invention.

[First Embodiment]
[Outline configuration of electronic clock]
FIG. 1 is a front view of the electronic clock 1, and FIG. 2 is a cross-sectional view showing an outline of the electronic clock 1.
As shown in FIGS. 1 and 2, the electronic clock 1 includes an outer case 30, a cover glass 33, and a back cover 34.
The outer case 30 has a cylindrical shape and is made of metal. As shown in FIG. 2, of the two openings of the outer case 30, the opening on the front surface side is closed by the cover glass 33, and the opening on the back surface side is closed by the back cover 34 made of metal. ing.
An A button 41, a B button 42, and a crown 43 are provided on the side surface of the outer case 30. The A button 41, the B button 42, and the crown 43 are examples of the operation unit of the present invention.

Inside the outer case 30, a dial ring 35, a dial 11, pointers 21, 22, 23, 24, 25, 26, 27, 28, a calendar car 20, each pointer and a calendar car 20 are driven. A drive mechanism 140 and the like are provided.

The dial ring 35 is formed in a ring shape.
The dial 11 is a circular plate material that displays the time inside the outer case 30, and each pointer 21 to 28 is provided between the dial 11 and the cover glass 33, and is arranged inside the dial ring 35.
The dial 11 and the main plate 125 are formed with holes through which the pointer shafts 29 of the pointers 21, 22, and 23 and the pointer shafts of the pointers 24, 25, 26, 27, and 28 (not shown) penetrate. Further, the dial 11 is formed with an opening of the calendar small window 15.

The drive mechanism 140 is attached to the main plate 125 and is covered with the circuit board 120 from the back cover side. The drive mechanism 140 has a step motor and a train wheel such as gears, and the step motor drives the pointers 21 to 28 and the calendar wheel 20 by rotating the pointer shaft through the wheel train.
Specifically, the drive mechanism 140 includes first to sixth drive mechanisms. The first drive mechanism drives the pointer 22 and the pointer 23, the second drive mechanism drives the pointer 21, the third drive mechanism drives the pointer 24, the fourth drive mechanism drives the pointer 25, and the fifth drive. The mechanism drives the pointers 26, 27, 28, and the sixth drive mechanism drives the calendar wheel 20.

The circuit board 120 includes a control device 100 on the front surface side. A circuit retainer 122 for covering the circuit board 120 is provided on the back cover side of the circuit board 120. Further, the battery 130 is provided between the main plate 125 and the back cover 34.

[Display mechanism of electronic clock]
The pointers 21, 22, and 23 are attached to a pointer shaft 29 provided at the center of the plane of the dial 11 along the front and back directions of the dial 11. The pointer shaft 29 is composed of three pointer shafts to which the pointers 21, 22, and 23 are attached.
As shown in FIG. 1, a scale for dividing the inner circumference into 60 is indicated on the inner circumference side of the dial ring 35 surrounding the outer peripheral portion of the dial 11. Using this scale, the pointer 21 displays the "second" of the first time (local time: for example, the local time when in a foreign country), the pointer 22 displays the "minute" of the first time, and the pointer 23 displays the "minute" of the first time. The "hour" of the first time is displayed. Since the "second" of the first time is the same as the "second" of the second time described later, the user can also grasp the "second" of the second time by checking the pointer 21.
The pointer 24 is attached to a pointer shaft provided at a position in the 2 o'clock direction from the center of the plane of the dial 11 to display the day of the week.

The pointer 25 is attached to a pointer shaft provided at a position in the 10 o'clock direction from the center of the plane of the dial 11.
The letters "DST" and the symbol "○" are written on the outer circumference of the rotation region of the pointer 25. DST (daylight saving time) means daylight saving time. The guideline 25 displays the daylight saving time (DST: daylight saving time ON, ◯: daylight saving time OFF) setting by instructing these letters and symbols.
Further, on the outer circumference of the rotation region of the pointer 25, a crescent sickle-shaped symbol 12 is written along the circumference. The symbol 12 is a power indicator of the battery 130, and the battery capacity is displayed when the pointer 25 indicates a position corresponding to the battery capacity.

The pointer 26 and the pointer 27 are attached to a pointer shaft provided at the same position in the 6 o'clock direction from the center of the plane of the dial 11. Guideline 26 displays the "minute" of the second time (home time: Japanese time when in a foreign country, for example), and guideline 27 displays the "hour" of the second time. The pointer 28 is attached to a pointer shaft provided at a position in the 4 o'clock direction from the center of the plane of the dial 11. Guideline 28 displays the morning and afternoon of the second time.
That is, the pointers 26, 27, 28, the above-mentioned guidelines 21, 22, 23, and the drive mechanism for driving these pointers are examples of the time display unit of the present invention. Moreover, the first time and the second time correspond to the present time of the present invention.

The calendar small window 15 is provided in an opening in which the dial 11 is opened in a rectangular shape, and the numbers printed on the calendar car 20 can be visually recognized from the opening. The calendar car 20 displays the "day" of the date corresponding to the first time by visually recognizing the numbers from the opening.

On the dial ring 35, along the scale on the inner peripheral side, a number indicating the time difference from Coordinated Universal Time (UTC) and a symbol 37 other than the number are written.
Further, in the outer case 30 provided around the dial ring 35, the city information 36 representing the representative city name using the standard time corresponding to the numbers and symbols 37 other than the numbers written on the dial ring 35. Is written together with numbers and symbols 37 other than numbers.
The guideline 21 displays the currently set time difference information and the selected time difference information by instructing numbers and symbols 37 other than numbers and city information 36. That is, the guideline 21 is an example of a guideline for displaying the time difference information of the present invention.

[Circuit configuration of electronic clock]
FIG. 3 is a diagram showing a circuit configuration of the electronic clock 1.
The electronic clock 1 includes a control device 100 composed of a CPU (Central Processing Unit), a battery 130 connected to the control device 100, an input device 40, and a motor coil 141 included in a drive mechanism 140. There is. Here, in the drive mechanism 140, each of the first to sixth drive mechanisms includes a motor coil, but FIG. 3 shows one motor coil as a representative.

The input device 40 includes an A button 41, a B button 42, a crown 43, and a switch circuit (not shown), and responds to pressing and releasing of the buttons 41 and 42 and pulling out, pushing, and rotating the crown 43. The operation signal is output to the control device 100.

The control device 100 includes a battery voltage detection circuit 51, a ROM (Read Only Memory) 52, a RAM (Random Access Memory) 53, a rewritable storage device 54, a coil drive circuit 55, and a control circuit 56. ..

Further, the control device 100 is connected to two input terminals 101 and 102 provided on the circuit board 120, and the data of the storage device 54 can be rewritten by supplying data to the input terminals 101 and 102 from an external device. It is configured.
FIG. 4 is a view of the electronic clock 1 as viewed from the back cover side. In FIG. 4, the back cover 34 and the outer case 30 are not shown. Further, only a part of the configuration of the drive mechanism 140 is shown in the figure.
As shown in FIG. 4, the input terminals 101 and 102 are provided on the back cover side of the circuit board 120. The output terminals of an external device can be brought into contact with the input terminals 101 and 102 with the back cover 34 of the electronic clock 1 open, and data is supplied from the output terminals to the input terminals 101 and 102. , The data of the storage device 54 can be rewritten.
Further, the circuit board 120 is provided with a plurality of terminals 103 in addition to the input terminals 101 and 102.

Returning to FIG. 3, the battery voltage detection circuit 51 detects the battery voltage of the battery 130 at intervals of, for example, 5 to 10 seconds, and outputs the detected value to the control circuit 56.
The coil drive circuit 55 is connected to terminals M1 and M2 of the motor coil 141. Then, under the control of the control circuit 56, a pulse is output to the motor coil 141 to drive the drive mechanism 140 and move each pointer.
The ROM 52 stores a program executed by the control circuit 56 and data used when the program is executed.

As shown in FIG. 5, the RAM 53 stores the internal time data 531, the first display time data 532, the second display time data 533, the first time difference data 534, and the second time difference data 535. Will be done.
The internal time is stored in the internal time data 531. In this embodiment, the internal time indicates UTC. This internal time is updated by the time measuring unit 561 described later in the control circuit 56.
The first display time data 532 stores the first display time obtained by adding the time difference of the time difference information of the first time difference data 534 to the internal time of the internal time data 531. Here, the first display time corresponds to the first time displayed by the pointers 21, 22, and 23.
The second display time data 533 stores the second display time obtained by adding the time difference of the time difference information of the second time difference data 535 to the internal time of the internal time data 531. Here, the second display time corresponds to the second time displayed by the pointers 21, 26, 27, 28.
The time difference information of the first time difference data 534 and the second time difference data 535 is set by the user operating the input device 40. This setting procedure will be described later.

The storage device 54 is composed of a rewritable non-volatile memory. Examples of such non-volatile memory include EEPROM (Electronically Erasable and Programmable Read Only Memory) and flash memory. The storage device 54 is an example of a rewritable storage unit of the present invention.
The time zone setting data 541 is stored in the storage device 54.

FIG. 6 is a diagram showing an example of time zone setting data 541.
In the time zone setting data 541, the indexed time difference information (time zone) and the hand position are stored in association with each other.
The index is a serial number and is indicated by an integer of 0 or more in the present embodiment.
The time difference information is information indicating the time difference from UTC. For example, "0" indicates that the time difference from UTC is 0 hours, "+1" indicates that the time difference from UTC is +1 hour, and "-1" indicates that the time difference from UTC is −. Indicates that it is one hour. In the time zone setting data 541 shown in FIG. 6, 40 time difference information is stored from -12 hours to +14 hours.
The hand position is information indicating the indicated position (second position) of the pointer 21 which is the second hand. For example, "0" indicates a 0 second position and "2" indicates a 2 second position.

Here, FIG. 7 is a diagram showing a change history of the time difference information (time zone). As shown in FIG. 7, there are cases where the time difference information in a predetermined area is changed (case of Libya to Turks and Caicos Islands) and cases where new time difference information is set (case of North Korea). In addition, the set time difference information may be lost. When new time difference information is set or when the set time difference information disappears, the number of time difference information increases or decreases.
As shown in FIG. 7, on August 15, 2015, new time difference information (+8.5 hours) was set for North Korea, so the number of time difference information up to that point was 40. It has increased by one from to 41.

As described above, when the time difference information is changed, it is necessary to update the time zone setting data 541 of the storage device 54 as well.
In the electronic clock 1, since the time zone setting data 541 is stored in the rewritable storage device 54, the changed time zone setting data is written to the time zone setting data 541 from the input terminals 101 and 102 by an external device. This allows the time zone setting data 541 to be updated.

The time zone setting data 541 shown in FIG. 6 above is the data before the time difference information is set for North Korea.
In the time zone setting data 541 of FIG. 6, the time difference information of the index "13" was +8 hours and the hand position was 17 seconds, and the time zone of the index "14" was +8.75 hours and the hand position was 18 seconds. ..
On the other hand, FIG. 8 is a diagram showing an example of time zone setting data 541 updated after the time difference information is set for North Korea.
In the time zone setting data 541 of FIG. 8, the number of time difference information is increased by one from 40 to 41, and the time difference information and the hand position associated with the indexes "14" to "39" before the update are the index ". It is associated with "15" to "40". Further, the hand position of the index "13" has been changed from 17 seconds to 16 seconds. The index "14" is associated with +8.5 hours, which is the time difference information of North Korea, and 17 seconds as the hand position.
That is, before the time zone setting data 541 is updated, the pointer 21 does not specify the 16-second position, but displays +8 hours by designating the 17-second position, and +8.75 hours by designating the 18-second position. However, after the update, +8 hours are displayed by specifying the 16-second position, +8.5 hours are displayed by specifying the 17-second position, and +8.75 by specifying the 18-second position. Display the time.

Returning to FIG. 3, the control circuit 56 functions as a time difference unit 561, a time difference selection unit 562, a time difference correction unit 563, a display control unit 564, and a time difference rewriting unit 565 by executing various programs stored in the ROM 52.
The timing unit 561 clocks the internal time by updating the internal time data 531 stored in the RAM 53 using a reference signal based on an oscillation signal of a crystal oscillator (not shown) included in the electronic clock 1.
The time difference selection unit 562 selects the time difference information according to the operation of the input device 40. The time difference selection unit 562 is an example of the manual time difference selection unit of the present invention.
The time difference correction unit 563 corrects the first display time and the second display time based on the time difference information selected by the time difference selection unit 562. The time difference correction unit 563 is an example of the manual time difference correction unit of the present invention.
The display control unit 564 controls the coil drive circuit 55 to display the time and the like on the pointers 21 to 28.
When the data for rewriting the storage device 54 is supplied to the input terminals 101 and 102, the time difference rewriting unit 565 rewrites all or only a part of the time zone setting data 541 of the storage device 54 with the supplied data. ..
The details of each functional unit of the control circuit 56 will be described in the following time difference information setting process.

[Time difference information setting process]
FIG. 9 is a flowchart showing a time difference information setting process executed by the electronic clock 1.
First, the process of setting the time difference information of the first time will be described.
The control circuit 56 determines whether or not the crown 43 is pulled to the first stage position (S11). If NO is determined in S11, the control circuit 56 repeatedly executes the process of S11.

If YES is determined in S11, the process proceeds to S12. In S12, the index number of the time difference information currently set in the first time data is set as the variable I. The display control unit 564 controls the movement of the pointer 21 which is the second hand, and causes the hand position associated with the index I to be indicated based on the time zone setting data 541.
Then, the control circuit 56 permits the input of the operation signal output from the input device 40 (S13).

Next, when the time difference selection unit 562 detects that the crown 43 has been rotated and the time difference selection operation has been performed based on the operation signal output from the input device 40, the rotation direction of the crown 43 is set to the clock. It is determined whether it is rotating or counterclockwise (S14).

When the rotation direction of the crown 43 is clockwise, the time difference selection unit 562 determines that the up operation for selecting the time difference information having the index number one larger has been performed, and adds 1 to the value of I (S15). ..
Next, the time difference selection unit 562 determines whether the value of I is a value obtained by adding 1 to the maximum value (S16). If NO is determined in S16, the time difference selection unit 562 advances the process to S21. The time difference selection unit 562 can obtain the maximum value of I by searching the maximum value from the number of each index in the time zone setting data 541. Alternatively, the storage device 54 may also store data indicating the maximum value of the index, and the time difference selection unit 562 may acquire the maximum value by reading the data.
If YES is determined in S16, the time difference selection unit 562 changes the value of I to 0 (S17), and proceeds to the process in S21.
That is, when the time difference selection unit 562 detects the up operation when the time difference information having the maximum index value is selected, the time difference selection unit 562 selects the time difference information having the minimum index value.

On the other hand, when the rotation direction of the crown 43 is counterclockwise, the time difference selection unit 562 determines that the down operation for selecting the time difference information whose index number is one smaller has been performed, and subtracts 1 from the value of I. (S18).
Next, the time difference selection unit 562 determines whether or not the value of I is -1 (S19). If NO is determined in S19, the time difference selection unit 562 advances the process to S21.
If YES is determined in S19, the time difference selection unit 562 changes the value of I to the maximum value (S20), and proceeds to the process in S21.
That is, when the time difference selection unit 562 detects the down operation when the time difference information having the minimum index value is selected, the time difference selection unit 562 selects the time difference information having the maximum index value.

In S21, the display control unit 564 controls the movement of the pointer 21 to indicate the needle position associated with the index I.
Then, the time difference correction unit 563 sets the time difference information associated with the index I in the first time difference data 534. As a result, the first display time data 532 stores the first display time in which the time difference of the time difference information of the first time difference data 534 is added to the internal time. That is, the first display time is corrected by the time difference information of the index I (S22). Then, the display control unit 564 controls the movement of the pointers 22 and 23 to display the hour and minute of the first display time.

Next, the time difference selection unit 562 determines whether or not the crown 43 is maintained at the one-stage position (S23). If YES is determined in S23, the time difference selection unit 562 returns the process to S14 and executes the processes of S14 to S23 again.
When NO is determined in S23, that is, when the crown 43 moves from the first stage position, the time difference information is set by the time difference information of the index I, and the control circuit 56 ends the time difference information setting process. When the time difference information setting process is completed, the display control unit 564 controls the movement of the pointer 21 to display the seconds of the first display time.

In the above description, the process of setting the time difference information of the first time has been described. However, by pressing the B button 42 while the crown 43 is pulled to the first step position, the time difference information of the second time is set. Processing can be performed. The time difference information setting process of the second time can also be performed by the same procedure as the time difference information setting process of the first time.

Further, in the present embodiment, the up operation and the down operation, which are the time difference selection operations, are performed by rotating the crown 43, but the present invention is not limited thereto. For example, the up operation may be performed by pressing the A button 41, and the down operation may be performed by pressing the B button 42.
Further, in the present embodiment, the display control unit 564 controls the movement of the pointers 22 and 23 each time the time difference selection operation is performed to display the hour and minute of the first display time, but the time difference information setting process is performed. After the end, the movement of the pointers 22 and 23 may be controlled at the same timing as the pointer 21.

[Action and effect of the first embodiment]
According to the electronic clock 1, after the shipment of the electronic clock 1, in a country or region where a time difference is not set, a new time difference that is not included in the existing time difference is set, or a time difference in a predetermined country or region is set. , When changed to a new time difference that is not included in the existing time difference, the time zone setting data 541 can be rewritten with the time zone setting data that includes the new time difference information, so that the current time can be corrected with the new time difference. .. Further, when the existing time difference disappears, the time zone setting data 541 can be rewritten with the time zone setting data that does not include the lost time difference information, whereby it is possible to avoid selecting a time difference that does not exist.

Since the guideline 21 displays the time difference information, the user can confirm the selected time difference information when performing the time difference selection operation, and can easily select the time difference information.
Further, when a new time difference occurs, the time zone setting data 541 can be rewritten with the new time zone information and the time zone setting data including the indicated position, whereby the new time difference information can be displayed. Further, when the existing time difference disappears, the time zone setting data 541 can be rewritten with the lost time difference information and the time zone setting data that does not include the indicated position, whereby the time difference information that does not exist is displayed. Can be avoided.
Further, by rewriting the time zone setting data 541 with the time zone setting data in which the instruction position corresponding to the existing time difference information is changed, the instruction position of the existing time difference information can be changed.

For example, with respect to each time difference information stored in the time zone setting data 541, the electronic clock has time difference information selected when an up operation is performed and time difference information selected when a down operation is performed. When the time difference selection unit 562 has a stored selection table and selects the time difference information according to the selection table, when the time zone setting data 541 is updated, it is necessary to update the selection table as well.
On the other hand, according to the electronic clock 1, even when the time zone setting data 541 is updated, the updated time difference information can be selected in a predetermined order by acquiring the maximum value of the index. Therefore, it is not necessary to have the selection table, and it is not necessary to update the selection table, so that the time difference information update work in the electronic clock 1 can be easily performed.
Further, according to this, since the program for selecting the time difference information does not need to be rewritten, it can be stored in the ROM 52.

Since the time zone setting data 541 can be rewritten by supplying the time difference information from the external device to the input terminals 101 and 102, for example, the electronic clock receives the time zone setting data by optical communication and sets the time zone. Compared with the case of rewriting the time zone setting data 541 with data, the time zone setting data 541 can be rewritten at a high speed, and the time required for rewriting can be shortened.

[Second Embodiment]
The electronic clock of the second embodiment is different from the electronic clock 1 of the first embodiment in that it receives radio waves and corrects the internal time based on the received radio waves. Other configurations are the same as those of the electronic clock 1. In the following description, the same reference numerals are given to the same configurations as the electronic clock 1, and the description thereof will be omitted.

FIG. 10 is a diagram showing a circuit configuration of the electronic clock 1A of the second embodiment.
The electronic clock 1A includes a radio wave receiving device 57 connected to the control device 100A. The radio wave receiving device 57 is an example of the radio wave receiving unit of the present invention.
Although not shown, the radio wave receiving device 57 is a general receiving device including a tuning circuit, an amplifier circuit, a bandpass filter, an envelope detection circuit, an AGC (Auto Gain Control) circuit, a binarization circuit, and the like.
The radio wave receiving device 57 is configured to be able to receive a plurality of standard radio waves. In this embodiment, the Japanese standard radio wave "JJY", the United States standard radio wave "WWVB", and the German standard radio wave "DCF77" can be received. In addition, it may be configured to be able to receive standard radio waves in other areas such as the standard radio wave "MSF" in the United Kingdom and the standard radio wave "BPC" in the People's Republic of China.

FIG. 11 is a diagram showing an example of time zone setting data 542 stored in the storage device 54.
Standard radio waves (JJY, WWVB, DCF77) are stored in the time zone setting data 542 in association with the time difference information. Here, the time difference information is associated with a standard radio wave that can receive radio waves in the area corresponding to the time difference information.

Here, the time zone setting data 542 is the time zone setting data 542 when the time difference information is changed as described above or when the standard radio wave that can receive the radio wave is changed in the area corresponding to the time difference information. Need to be updated.
In the electronic clock 1A, similarly to the electronic clock 1 of the first embodiment, the time zone setting data 542 is stored in the rewritable storage device 54, so that the input terminals 101 and 102 are changed by the external device. The time zone setting data can be written to the time zone setting data 542, whereby the time zone setting data 542 can be updated.

FIG. 12 is a diagram showing an example of the updated time zone setting data 542.
In the time zone setting data 542 of FIG. 12, the time difference information of +8.5 hours is added to the time zone setting data 542 of FIG. 11, and JJY is associated with the time difference information. If a new standard radio wave is set, or if the number of transmitting stations that transmit the existing standard radio wave increases and the transmission area of the standard radio wave expands, the standard radio wave associated with the existing time difference information will be used. Subject to change.

The control circuit 56A also functions as a reception control unit 566, a time information acquisition unit 567, and a time correction unit 568, in addition to the time measurement unit 561, the time difference selection unit 562, the time difference correction unit 563, the display control unit 564, and the time difference rewriting unit 565. To do.
The reception control unit 566 controls the radio wave receiving device 57 to execute a radio wave reception process for receiving radio waves.
The time information acquisition unit 567 acquires time information based on the received radio wave.
The time correction unit 568 corrects the internal time stored in the internal time data 531 based on the acquired time information. In the present embodiment, the internal time indicates the time of the current location.
The details of the functions of the reception control unit 566, the time information acquisition unit 567, and the time adjustment unit 568 will be described in the next time adjustment process.

[Time adjustment process]
FIG. 13 is a flowchart showing a time adjustment process executed by the electronic clock 1A.
In the reception control unit 566, the A button 41 is, for example, in a state where the crown 43 is in the 0-step position (a state in which the crown 43 is pushed inward toward the inside of the electronic watch 1A) based on the operation signal output from the input device 40. Detects whether or not the button has been pressed for 3 seconds or longer (S31). If YES is determined in S31, the reception control unit 566 advances the process to S33.

If NO is determined in S31, the reception control unit 566 determines whether or not the internal time is a preset time (fixed time) (S32). If YES is determined in S32, the reception control unit 566 advances the process to S33. On the other hand, if NO is determined in S32, the reception control unit 566 executes the process of S31 again.

In S33, the reception control unit 566 controls the radio wave receiving device 57 by selecting the standard radio wave associated with the index I of the time difference information currently set in the first time difference data based on the time zone setting data 542. Then, the reception process for receiving the selected standard radio wave is executed.
Then, the time information acquisition unit 567 acquires the time information based on the received radio wave.

Next, the time correction unit 568 determines whether or not the reception is successful by determining whether or not the time information has been acquired by the time information acquisition unit 567 (S34). This determination is repeated until the reception is successful or the reception process is executed until the preset timeout time elapses.
If YES is determined in S34, the time correction unit 568 updates the internal time data 531 based on the acquired time information to correct the internal time (S35). Specifically, the time difference with respect to UTC, which is the internal time, is first determined based on the received standard radio wave. For example, if the standard radio wave to be received is JJY, the time when JJY is transmitted is UTC + 9 hours, so that the time difference with respect to UTC can be determined to be +9 hours. Then, the internal time data 531 is updated at the time obtained by subtracting the time difference with respect to UTC from the received time information. After executing the above reception process, the time adjustment process ends.

[Action and effect of the second embodiment]
Also in this embodiment, the same action and effect can be obtained by the same configuration as in the first embodiment.
Further, according to the present embodiment, the radio wave receiving device 57 performs a reception process of receiving a standard radio wave associated with the selected time difference information. Therefore, in the time zone setting data 542, by associating the time difference information with a standard radio wave that can be received in the area corresponding to the time difference information, a reception process for receiving a standard radio wave that cannot be received in the area is executed. Can be suppressed.
Then, even if there is a change in the standard radio wave that can be received in the area corresponding to the time difference information, the standard radio wave stored in the time zone setting data 542 can be rewritten, so that the change is reflected in the radio wave receiving device 57. It is possible to execute a reception process for receiving the standard radio wave.

[Third Embodiment]
The electronic clock of the third embodiment receives a satellite signal from a position information satellite and corrects the internal time and time difference based on the received satellite signal, and receives data from an external device by optical communication. It is different from the electronic clocks 1 and 1A of the first and second embodiments. In the following description, the same reference numerals are given to the same configurations as those of the electronic clocks 1 and 1, and the description thereof will be omitted.

[Communication system configuration]
FIG. 14 is an external view showing an electronic clock 1B and a communication device 2 constituting the communication system 10 of the third embodiment.
As shown in FIG. 14, the communication system 10 includes an electronic clock 1B and a communication device 2 as an external device capable of transmitting and receiving signals between the electronic clock 1B.
The electronic clock 1B includes a solar cell 135 which is a light receiving element, which will be described in detail later.

The communication device 2 includes a base portion 71, a main body portion 72 extending upward from the base portion 71, and a pedestal portion 73 extending horizontally from the main body portion 72. Further, an arm portion 74 is provided on the upper surface 721 of the main body portion 72, and an illumination portion 741 is provided at the tip of the arm portion 74.
A coil 75 is built in the pedestal portion 73. Further, the lighting unit 741 has a built-in light emitting element 76. The light emitting element 76 is configured to include an LED (Light Emitting Diode).

Here, the electronic clock 1B is placed (set) on the pedestal portion 73 so that the back cover side faces the surface of the pedestal portion 73. At this time, since the pedestal portion 73 is cantilevered and supported by the main body portion 72, the back cover of the electronic watch 1B can be attached to the pedestal portion even if the band of the electronic watch 1B is a type that cannot be separated like a three-fold buckle type. It can be placed on the surface of 73. Therefore, the motor coil 141 of the electronic clock 1B and the coil 75 built in the pedestal portion 73 are arranged at close positions, and communication by electromagnetic coupling is possible.
Further, the illumination unit 741 is provided so that the light emitted from the light emitting element 76 enters the surface of the electronic clock 1B mounted on the pedestal unit 73 and is received by the solar cell 135.

The upper surface 721 of the main body 72 is provided with a communication button 771 for communicating the communication device 2 with the electronic clock 1B, and a lighting button 772 for lighting the light emitting element 76.
When the communication button 771 is pressed, the communication device 2 starts communication processing with the electronic clock 1B.
When the lighting button 772 is pressed, the communication device 2 continuously lights the light emitting element 76. As a result, the solar cell 135 of the electronic clock 1B set in the communication device 2 is continuously irradiated with light, and the secondary battery 130B included in the electronic clock 1B, which will be described later, is charged.
The operator of the communication device 2 may be a service provider related to the electronic clock 1B including a seller or a repairer, a user of the electronic clock 1B, or the like.

Although not shown, a storage medium such as a USB (Universal Serial Bus) memory, an SD memory card, a CD (Compact Disc), or a DVD (Digital Versatile Disk) is inserted into the main body 72 of the communication device 2. An insertion slot is provided. Further, the main body 72 is also provided with a connector that can be connected to the Internet or a PC (Personal Computer) via a cable. With these configurations, the communication device 2 acquires the data to be transmitted to the electronic clock 1B from the storage medium, the Internet, a PC, or the like.

[Outline of operation of communication system]
As shown in FIG. 15, in the communication system 10, when the electronic clock 1B outputs a pulse to the motor coil 141, a magnetic field is generated in the motor coil 141, and an electromagnetic coupling occurs with the coil 75 of the communication device 2. A current flows through the coil 75 due to a change in the magnetic field, and an induced electromotive voltage is generated. Utilizing this electromagnetic coupling, the electronic clock 1B has a "1" signal indicating a value of "1" of "1,0 (binary number)" or a "1" signal depending on whether or not a pulse is output to the motor coil 141. A "0" signal indicating a "0" value of "1,0" is transmitted. On the other hand, the communication device 2 receives the "1" signal or the "0" signal by detecting whether or not a voltage is generated in the coil 75. In this way, communication by electromagnetic coupling is performed between the communication device 2 and the electronic clock 1B.
Further, when the communication device 2 drives the light emitting element 76 to light up, light is incident on the solar cell 135 of the electronic clock 1B. Using this light, the communication device 2 transmits a "1" signal or a "0" signal depending on whether or not the light emitting element 76 is turned on. On the other hand, in the electronic clock 1B, the power generation voltage changes depending on whether or not light of a predetermined intensity is incident on the solar cell 135. Therefore, by detecting the power generation voltage, a "1" signal or a "0" signal can be generated. Can be received. In this way, optical communication is performed between the communication device 2 and the electronic clock 1B.

[Electronic clock configuration]
The electronic clock 1B receives satellite signals from at least one GPS satellite among a plurality of GPS (Global Positioning System) satellites orbiting the earth in a predetermined orbit to acquire time information, and at least 3 It is configured to receive satellite signals from two GPS satellites and calculate and acquire position information.

[Outline configuration of electronic clock]
FIG. 16 is a front view of the electronic clock 1B, and FIG. 17 is a cross-sectional view showing an outline of the electronic clock 1B. Here, only the configuration different from that of the electronic clock 1 of the first embodiment will be described, and the description of other configurations will be omitted.
In the electronic watch 1B, as shown in FIG. 17, the outer case 30B is configured by fitting a bezel 32 made of ceramic to the surface side of a cylindrical case 31 made of metal.
The dial ring 35B is made of plastic and has a ring shape in a plan view and a mortar shape in a cross-sectional view. A donut-shaped storage space is formed by the dial ring 35B and the inner peripheral surface of the bezel 32, and the ring-shaped antenna body 110 is housed in this storage space.

The dial 11B is made of a light-transmitting material such as plastic.
A solar cell 135 that generates photovoltaic power is provided between the dial 11B and the main plate 125.
The circuit board 120 includes a control device 100B and a GPS receiving device 58 on the back cover side. The circuit board 120 and the antenna body 110 are connected by using the antenna connection pin 115.
Further, in the present embodiment, a secondary battery 130B such as a lithium ion battery is used as the battery. The secondary battery 130B is charged with the electric power generated by the solar cell 135.

As shown in FIG. 16, the dial ring 35B has the alphabet "Y" at the 12-minute position and the alphabet "N" at the 18-minute position. The pointer 21 indicates either "Y" or "N" and displays the reception result of the satellite signal.
An airplane-shaped symbol 13 is written on the outer circumference of the rotation region of the pointer 25. This symbol represents airplane mode. The pointer 25 is set to the airplane mode by instructing the symbol 13, and indicates that reception is not performed.
Further, a number "1" and a symbol "4+" are written on the outer circumference of the rotation region of the pointer 25. These numbers and symbols represent the receiving mode of the satellite signal. "1" receives GPS time information and corrects the internal time (time measurement mode), "4+" receives GPS time information and orbit information, calculates the position information that is the current position, and internally It means that the time and the time difference are corrected (positioning mode).

[Circuit configuration of electronic clock]
FIG. 18 is a diagram showing a circuit configuration of the electronic clock 1B.
As shown in FIG. 18, the electronic clock 1B includes a GPS receiving device 58 connected to the control device 100B. Further, the control device 100B includes a diode 61, a charge control switch 62, and a voltage detection circuit 63.

The diode 61 is provided in the path for electrically connecting the solar cell 135 and the secondary battery 130B, and the secondary battery 130B is provided without interrupting the current (forward current) from the solar cell 135 to the secondary battery 130B. Cuts off the current (reverse current) from the solar cell 135 to the solar cell 135. The forward current flows only when the voltage of the solar cell 135 is higher than the voltage of the secondary battery 130B, that is, when charging. The diode 61 prevents current from flowing from the secondary battery 130B to the solar cell 135 when the voltage of the solar cell 135 becomes lower than that of the secondary battery 130B.
The charge control switch 62 connects and disconnects the current path from the solar cell 135 to the secondary battery 130B, and is provided in the switching path that electrically connects the solar cell 135 and the secondary battery 130B. It has an element. It connects when the switching element transitions from the off state to the on state, and disconnects when the switching element transitions from the on state to the off state.

The voltage detection circuit 63 operates based on a control signal that specifies the voltage detection timing, and sets the terminal voltage PVIN of the solar cell 135, that is, the output voltage of the solar cell 135 during the period when the charge control switch 62 is turned off. To detect. Then, the detected voltage is compared with a preset threshold value, and the comparison result is output to the control circuit 56B. Then, the control circuit 56B receives a signal using the light emitted to the solar cell 135 by determining the comparison result. Here, the voltage detection circuit 63 is an example of the detection circuit of the present invention, and the solar cell 135 and the voltage detection circuit 63, which are light receiving elements, are an example of the optical receiver of the present invention.
In the present embodiment, when communicating with the communication device 2, the coil drive circuit 55 transmits a signal by using the magnetic field generated by the motor coil 141 by controlling the pulse output to the motor coil 141.

The GPS receiving device 58 is connected to the antenna body 110 and processes the satellite signal received via the antenna body 110 to acquire GPS time information and position information. The antenna body 110 receives radio waves of satellite signals transmitted from GPS satellites and passed through the cover glass 33 and the dial ring 35B shown in FIG.
Although not shown, the GPS receiving device 58 has a correlation between an RF (Radio Frequency) unit that receives a satellite signal transmitted from a GPS satellite and converts it into a digital signal, and a received signal, similarly to a normal GPS device. The BB section (baseband section) that executes the judgment and demodulates the navigation message, and the navigation message (satellite signal) demodulated by the BB section are processed to acquire and output GPS time information and position information (positioning information). It is equipped with an information acquisition unit. The GPS receiving device 58 is an example of the satellite signal receiving unit of the present invention.

FIG. 19 is a diagram showing a configuration of data stored in the storage device 54 of the electronic clock 1B.
In the storage device 54, in addition to the time zone setting data 541, the system setting data 544 for driving the electronic clock 1B, the reception setting data 545, the time zone data 546 described later, and the version (version) of each data are stored in the storage device 54. The indicated version data 543 is stored in each predetermined address.
Since the storage device 54 is rewritable, the time zone setting data 541, the system setting data 544, the reception setting data 545, the time zone data 546, and the version data 543 can be updated.

In the system setting data 544, for example, parameters such as step rate information and step motor drive setting information are stored.
The reception setting data 545 stores parameters such as the automatic reception interval of the satellite signal in the reception process of the GPS receiving device 58 and the timeout time until the reception process is completed when the satellite signal cannot be captured.

FIG. 20 is a diagram showing an example of time zone data 546.
Area information and time difference information are associated with the time zone data 546.
As shown in FIG. 21, the area information is information indicating each area when the geographic information is divided into a plurality of areas. Each region is, for example, a rectangular region having a length of about 1000 to 2000 km in the east-west and north-south directions. As the area information, coordinate data for specifying each area is stored. That is, in the case of a rectangular area, for example, the area can be specified by the coordinates (longitude, latitude) on the upper left of the area and the coordinates (longitude, latitude) on the lower right of the area, so that the coordinates of these two points are It is remembered.
Therefore, when the position information is acquired in the positioning mode, the control circuit 56B can acquire the time difference information based on the position information (latitude, longitude).

Similar to the time zone setting data 541, the time zone data 546 needs to be updated when the time difference information is changed.
Therefore, in the electronic clock 1B, the time zone data 546 is stored in the rewritable storage device 54. Then, when the time difference information is changed, the changed time zone data can be written to the time zone data 546 by transmitting the changed time zone data from the communication device 2 to the electronic clock 1B. As a result, the time zone data 546 can be updated.

As shown in FIG. 22, the control circuit 56B includes a time measuring unit 561, a time difference selection unit 562, a time difference correction unit 563, a display control unit 564, a time difference rewriting unit 565, a time measuring unit 611, a positioning unit 612, and a time correction unit. It functions as a unit 613, a positioning time difference selection unit 614, a positioning time difference correction unit 615, and a communication processing unit 616.

The time measuring unit 611 can determine that the electronic clock 1B is exposed to sunlight outdoors when the automatic reception timing set at a predetermined interval is met or the amount of light emitted to the electronic clock 1B is equal to or greater than the predetermined amount of light. In this case, it is determined that the automatic reception condition is satisfied, and the GPS receiving device 58 is operated to perform reception processing in the time measurement mode. Further, when the A button 41 is pressed for 3 seconds or more and less than 6 seconds and the forced reception operation in the time measurement mode is performed, the time measurement unit 611 operates the GPS receiving device 58 to perform reception processing in the time measurement mode. .. When the reception process in the time measurement mode is performed, the GPS receiving device 58 acquires at least one GPS satellite, receives a satellite signal transmitted from the GPS satellite, and acquires time information.

When the A button 41 is pressed for 6 seconds or longer and the positioning mode forced reception operation is performed, the positioning unit 612 operates the GPS receiving device 58 to perform reception processing in the positioning mode. When the reception process is performed in the positioning mode, the GPS receiving device 58 captures at least three, preferably four or more GPS satellites, receives satellite signals transmitted from each GPS satellite, and calculates position information. To get. In addition, the GPS receiving device 58 can also acquire time information at the same time when the satellite signal is received.
In the present embodiment, when the above automatic reception condition is satisfied, the reception process is performed in the time measurement mode, but the reception process may be selected so as to be performed in the positioning mode.

The time correction unit 613 corrects the internal time by updating the internal time data 531 with the time information acquired by the reception processing of the time measurement mode or the positioning mode. That is, in this embodiment, the internal time indicates UTC.

The positioning time difference selection unit 614 selects the time difference information corresponding to the area including the position information acquired by the reception processing of the positioning mode from the time zone data 546 stored in the storage device 54.
The positioning time difference correction unit 615 sets the time difference information selected by the positioning time difference selection unit 614 in the first time difference data 534. As a result, the first display time data 532 stores the first display time in which the time difference of the time difference information of the first time difference data 534 is added to the internal time. As a result, the display control unit 564 controls the movement of the pointers 21, 22, and 23 to display the first display time.

The communication processing unit 616 executes a communication process for communicating with the communication device 2.
Specifically, the communication processing unit 616 controls the coil drive circuit 55 to output a pulse signal to the motor coil 141, thereby performing a transmission process of transmitting a signal to the communication device 2 by electromagnetic coupling.
Further, the communication processing unit 616 controls the voltage detection circuit 63 to detect the output voltage of the solar cell 135, thereby performing a reception process of receiving a signal by light transmitted from the communication device 2. That is, when the detected value of the output voltage is higher than the threshold value, it is determined that the "1" signal has been received, and when the detected value is equal to or less than the threshold value, it is determined that the "0" signal has been received.

In the present embodiment, when the time difference rewriting unit 565 receives the data for rewriting the storage device 54 by the communication processing, the time zone setting data 541 and the time zone data 546 of the storage device 54 are received data. , System setting data 544, reception setting data 545, and version data 543 are rewritten. The rewriting may be performed for all data at once, for each data unit, or for only a part of the data.

[Action and effect of the third embodiment]
Also in this embodiment, the same action and effect can be obtained by the same configuration as in the first embodiment.
Further, according to the present embodiment, even if the user does not perform the time difference selection operation of the operation unit, the current time can be automatically corrected by the time difference information corresponding to the current location by receiving the satellite signal.
Then, even if the time difference is set in a country or region where the time difference is not set, or even if the time difference is changed in a predetermined country or region, the time zone data 546 can be rewritten, so that these changes are reflected. You can correct the current time with the time difference information.

By transmitting the time difference information from the communication device 2 to the electronic clock 1B by optical communication, the time zone setting data 541 and the time zone data 546 can be rewritten, so that it is not necessary to open the back cover of the electronic clock 1B, for example. , Rewriting work can be done easily.

[Other Embodiments]
The present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the range in which the object of the present invention can be achieved are included in the present invention.

In the electronic clock of each of the above embodiments, the time difference information setting process may be used to display the time in which not only the time difference information but also the daylight saving time information is reflected.
In this case, the control circuit also functions as a daylight saving time switching unit that switches the daylight saving time setting according to the operation of the input device 40. Then, as shown in FIG. 23, the time zone setting data stores the daylight saving time (DST) information in association with the time difference information. Then, the electronic clock executes the time difference information setting process shown in FIG. 24. Since the processes of S11 to S23 are the same as the time difference information setting process of the first embodiment, the description thereof will be omitted.
After the first display time is corrected by the time difference information of the index I in S22, the time difference correction unit 563 determines whether or not the DST setting is valid (ON state) (S41). If NO (invalid) is determined in S41, the control circuit proceeds to S23 and determines whether or not the crown 43 is maintained at the one-stage position.
On the other hand, if YES is determined in S41, the time difference correction unit 563 selects the daylight saving time information associated with the index I from the time zone setting data, and converts the daylight saving time information into the first display time data 532. Add to the stored first display time. That is, the first display time is corrected by the daylight saving time of the index I (S42). Then, the display control unit 564 controls the movement of the pointers 22 and 23 to display the hour and minute of the first display time. Then, the control circuit advances the process to S23. The second display time can also be corrected based on the daylight saving time information in the same manner.
According to this configuration, when the daylight saving time information associated with the time difference information is changed, the daylight saving time information stored in the time zone setting data can be rewritten, so that the daylight saving time information reflecting the change can be used as the current time. Can be fixed.

In the electronic clock of each of the above embodiments, the pointer 21 displays the time difference information, but the present invention is not limited to this. For example, the time difference information may be displayed on another pointer.
Further, when the electronic clock is provided with a digital display device such as a liquid crystal display device, the time difference information may be displayed by the digital display device. In such a case, it is not necessary to store the hand position in the time zone setting data.

In the electronic clock of each of the above embodiments, the storage device 54 for storing the time zone setting data is provided in the control device, but the present invention is not limited thereto. For example, it may be externally attached to the control device.

In the electronic clock 1B of the third embodiment, the time zone data 546 is stored in the storage device 54 included in the control device 100B, but the present invention is not limited thereto.
For example, the time zone data 546 may be stored in the rewritable storage device 59 connected to the GPS receiving device 58, as shown in FIG. 25. Here, the storage device 59 is composed of a rewritable non-volatile memory, and the data can be directly rewritten by an external device without going through the control device 100B.
In this case, when the GPS receiving device 58 acquires the position information, the GPS receiving device 58 selects the time difference information corresponding to the acquired position information from the time zone data 546 stored in the storage device 59. Then, the selected time difference information is transmitted to the control device 100B.
The time zone setting data 541 may be stored in the storage device 54 included in the control device 100B, or may be stored in the storage device 59.

In the electronic clock 1B of the third embodiment and its modification, the satellite signal receiving unit is composed of a GPS receiving device, but the present invention is not limited thereto.
For example, the satellite signal receiving unit may receive a satellite signal from a position information satellite of a satellite system different from GPS.
For example, the Quasi-Zenith Satellites System (QZSS), which is a regional navigation satellite system (RNSS), the IRNSS (Indian Regional Navigational Satellite System) in India, and the DORIS (Doppler) in France. Orbitography and Radio-positioning Integrated by Satellite) or satellite signals may be received from position information satellites such as Beidou in China. In addition, satellite signals are transmitted from the position information satellites of GLONASS and Galileo, which are global navigation satellite systems (GNSS) other than GPS, and satellite-based augmentation system (SBAS). You may receive it.

Further, the satellite signal receiving unit may be configured to be able to receive satellite signals from the position information satellites of the plurality of types of satellite systems.
In this case, in the time zone setting data, as shown in FIG. 26, it is preferable to associate the type of satellite system with the time difference information.
According to this, when receiving the satellite signal, the satellite signal receiving unit refers to the time zone setting data, and the satellite of the type associated with the time difference information selected by the time difference selection unit 562 or the positioning time difference selection unit 614. The position information satellite of the system is extracted, and the satellite signal is received from the position information satellite.
According to this configuration, in the time zone setting data, by associating the time difference information with the type of satellite system capable of receiving the satellite signal in the area corresponding to the time difference information, the satellite system capable of receiving the satellite signal The reception process of receiving the satellite signal from the position information satellite is executed. That is, in a time difference area where satellite signals can be received from the position information satellites of a plurality of types of satellite systems, it is possible to receive satellite signals from more position information satellites, so that the success probability of reception is improved or the reception is short. Efficient reception is possible, such as being able to receive at.
And even if a new satellite system is set up or the number of position information satellites of the existing satellite system increases and the type of satellite system that can receive satellite signals changes in the area corresponding to the time difference information, the time Since the type of satellite system stored in the zone setting data can be rewritten, the satellite signal receiving unit can execute a reception process of receiving a satellite signal from the position information satellite of the type of satellite system to which the change is reflected.

In a time difference area where satellite signals can be received from the position information satellites of multiple types of satellite systems, it is possible to simultaneously search for the position information satellites of multiple types of satellite systems and execute reception processing, but the current consumption is reduced. In order to reduce the number, it is preferable to search for position information satellites by selecting a plurality of satellite systems in order. In this case, the type and number of position information satellites or position information satellites that succeeded in receiving satellite signals that were captured during the previous reception are stored in the storage device, and the types and number of position information satellites stored in the storage device are stored. Based on this, it is preferable to set the order in which the position information satellites are searched.
For example, if the reception area is the same as the previous time, there is a possibility that the type of position information satellite that was successfully captured or signal received at the time of the previous reception can be searched for earlier. Is high. In addition, if multiple types of position information satellites were successfully captured or signal reception was successful last time, the type of position information satellites with the largest number of acquisitions and receptions can be searched first to obtain the type of position information satellites. Is likely to be captured early. If the search process for satellites is terminated when the required number of satellites are acquired, the search process for other position information satellites can be eliminated and the current consumption can be reduced.

If the storage device does not store the type of position information satellite that was successfully captured or received the signal at the time of the previous reception, the type of position information satellite that consumes the least current when the receiving device is operating is in order. It is preferable to search for.
By searching for a type of position information satellite with low current consumption first, there is a high possibility that the current consumption until a predetermined number of satellites are acquired can be suppressed. For example, it is assumed that the current consumption during satellite search increases in the order of GPS, GLONASS, and Beidou due to the difference in frequency. In this case, if you search in the order of GPS, GLONASS, Beidou, for example, if the sky is open and you can capture various satellites, the first GNSS search, that is, the GPS satellite search is sufficient for the number of satellites. May be able to capture. Therefore, if the search process for satellites is terminated when the required number of satellites are acquired, it is not necessary to perform the search process for GLONASS satellites and Beidou satellites, which consume more current, and the current consumption can be reduced.

The electronic clock 1B of the third embodiment receives data from the communication device 2 by the optical receiving unit, but the present invention is not limited to this. For example, data may be received by electromagnetic induction using a motor coil 141, or data may be received by a communication method such as electromagnetic induction, NFC (Near Field Communication), or Bluetooth (registered trademark) by providing a dedicated coil. Good.

In each of the above embodiments, the time zone setting data is updated by supplying data from an external device to the electronic clock, but the present invention is not limited to this. For example, the time zone setting data may be manually updated in response to the operation of the buttons 41 and 42.

In each of the above embodiments, when the time difference is changed, the electronic clock displays the changed time difference information only by changing the indicated position of the pointer 21 for displaying the time difference information. Not limited to this. For example, after exchanging the dial ring or bezel with the changed number or a symbol 37 other than the number or the city information 36, the pointer 21 may instruct the changed designated position.

The second embodiment and the third embodiment may be combined to form an electronic clock capable of receiving standard radio waves and satellite signals.

1,1A, 1B ... Electronic clock, 100, 100A, 100B ... Control device, 101, 102 ... Input terminal, 130 ... Battery, 130B ... Secondary battery, 135 ... Solar battery (light receiving element), 140 ... Drive mechanism, 141 ... Motor coil, 2 ... Communication device (external device), 21 ... Pointer, 40 ... Input device, 41 ... A button (operation unit), 42 ... B button (operation unit), 43 ... Crown (operation unit), 51 ... Battery voltage detection circuit, 52 ... ROM, 53 ... RAM, 331 ... Internal time data, 532 ... First display time data, 533 ... Second display time data, 534 ... First time difference data, 535 ... Second time difference Data, 54 ... Storage device (storage unit), 541,542 ... Time zone setting data, 546 ... Time zone data, 55 ... Coil drive circuit, 56, 56A, 56B ... Control circuit, 561 ... Time measurement unit, 562 ... Time difference selection Unit, 563 ... Time difference correction unit, 564 ... Display control unit, 565 ... Time difference rewriting unit, 566 ... Reception control unit, 567 ... Time information acquisition unit, 568 ... Time correction unit, 57 ... Radio receiving device (radio receiving unit), 58 ... GPS receiving device (satellite signal receiving unit), 611 ... Time measuring unit, 612 ... Positioning unit, 613 ... Time correction unit, 614 ... Positioning time difference selection unit, 615 ... Positioning time difference correction unit, 616 ... Communication processing unit, 63 … Voltage detection circuit (detection circuit).

Claims (9)

A display unit that displays the time and
An operation unit that allows time difference selection operation and
A rewritable storage unit that includes a plurality of time difference information indicating the time difference from the reference time and stores the time zone setting data referred to during the time difference selection operation.
A manual time difference selection unit that selects one of the time difference information from the plurality of time difference information stored in the storage unit in response to the time difference selection operation.
A manual time difference correction unit that corrects the current time based on the selected time difference information,
A display control unit that displays the current time on the display unit ,
A radio wave receiver that can receive multiple standard radio waves and
A time information acquisition unit that acquires time information based on the standard radio waves,
A time correction unit that corrects the current time based on the time information is provided.
The time difference information and the type of the standard radio wave corresponding to the time difference information are stored in the storage unit.
The radio wave receiving unit is an electronic timepiece that performs reception processing for receiving the standard radio wave of the type associated with the selected time difference information . A display unit that displays the time and
An operation unit that allows time difference selection operation and
The time zone setting data that includes a plurality of time difference information indicating the time difference from the reference time and is referred to at the time difference selection operation, the area where the geographic information is divided, and the time zone data including the time difference information corresponding to the area. Rewritable storage unit that stores
A manual time difference selection unit that selects one of the time difference information from the plurality of time difference information stored in the storage unit in response to the time difference selection operation.
A manual time difference correction unit that corrects the current time based on the selected time difference information,
A display control unit that displays the current time on the display unit,
A satellite signal receiving unit that receives satellite signals from position information satellites and calculates and acquires position information based on the satellite signals.
A positioning time difference selection unit that selects the time difference information corresponding to the area including the acquired position information from the time difference information of the time zone data.
A positioning time difference correction unit that corrects the current time based on the time difference information selected by the positioning time difference selection unit is provided .
The satellite signal receiving unit is configured to be able to receive the satellite signal from the position information satellite of a plurality of satellite systems.
The time difference information and the type of the satellite system corresponding to the time difference information are stored in the storage unit.
The satellite signal receiving unit is an electronic clock that performs reception processing for receiving the satellite signal from the position information satellite of the satellite system of the type associated with the selected time difference information . In the electronic clock according to claim 1 or 2 .
Equipped with a guideline for displaying the time difference information
An electronic clock characterized in that the plurality of time difference information and the designated position of the pointer corresponding to the time difference information are stored in the storage unit. In the electronic clock according to any one of claims 1 to 3 .
The plurality of time difference information and the index corresponding to the time difference information are stored in the storage unit.
The time difference selection operation includes an up operation for selecting the time difference information having the index one larger and a down operation for selecting the time difference information having the index one smaller.
The manual time difference selection unit is
When the up operation is detected when the time difference information having the maximum value of the index is selected, the time difference information having the minimum value of the index is selected.
An electronic clock characterized in that when the down operation is detected when the time difference information having the minimum value of the index is selected, the time difference information having the maximum value of the index is selected. In the electronic clock according to any one of claims 1 to 4 .
Equipped with a daylight saving time switching unit that enables or disables the daylight saving time setting
The time difference information and the daylight saving time information corresponding to the time difference information are stored in the storage unit.
When the daylight saving time setting is enabled, the manual time difference correction unit corrects the current time based on the selected time difference information and the summer time information associated with the selected time difference information. An electronic clock characterized by daylight saving time. In the electronic clock according to any one of claims 1 to 5 .
An input terminal to which the time difference information is supplied from an external device,
An electronic timepiece including a time difference rewriting unit that rewrites the time difference information stored in the storage unit with the time difference information supplied to the input terminal. In the electronic clock according to any one of claims 1 to 6 .
An optical receiver that includes a light receiving element and a detection circuit that detects the output value of the light receiving element, and receives the time difference information by communication using light using the light receiving element.
An electronic timepiece including a time difference rewriting unit that rewrites the time difference information stored in the storage unit with the received time difference information. A display unit that displays the time and
An operation unit that allows time difference selection operation and
A rewritable storage unit that includes a plurality of time difference information indicating a time difference from the reference time and a type of standard radio wave corresponding to the time difference information and stores time zone setting data referred to during the time difference selection operation.
A control method for an electronic clock including a radio wave receiver capable of receiving a plurality of standard radio waves .
A step of rewriting the time difference information stored in the storage unit, and
A step of selecting one of the time difference information from the plurality of time difference information stored in the storage unit in response to the time difference selection operation.
Steps to correct the current time based on the selected time difference information,
The step of displaying the current time on the display unit and
A step of performing reception processing for receiving the standard radio wave of the type associated with the selected time difference information, and
A method for controlling an electronic clock, which comprises a step of correcting the current time based on time information acquired from the received standard radio wave . A display unit that displays the time and
An operation unit that allows time difference selection operation and
And time zone setting data referenced type satellite systems corresponding to a plurality of time difference information and the time difference information indicating the difference between the reference time at the Nde containing time difference selection operation, corresponding to the divided region and the region geographic information A rewritable storage unit that stores time zone data including the time difference information
It is a control method of an electronic clock including a satellite signal receiving unit capable of receiving satellite signals from position information satellites of a plurality of satellite systems .
A step of rewriting the time difference information stored in the storage unit, and
A step of selecting one of the time difference information from the plurality of time difference information stored in the storage unit in response to the time difference selection operation.
Steps to correct the current time based on the selected time difference information,
The step of displaying the current time on the display unit and
A step of performing reception processing for receiving the satellite signal from the position information satellite of the satellite system of the type associated with the selected time difference information, and
A step of calculating and acquiring position information based on the satellite signal received in the reception process, and
From the time difference information of the time zone data stored in the storage unit, the time difference information corresponding to the area including the acquired position information is selected, and the current time difference information is selected based on the selected time difference information. With a step to correct the time
A method of controlling an electronic clock, which is characterized in that.

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