JP2015055478A - Electronic watch and method of controlling display of electronic watch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic watch and a method of controlling display of the electronic watch capable of improving success ratio in reception of leap second information and improving user-friendliness.SOLUTION: In the electronic watch 1, in a case that a time measuring section 410 acquires time information and a leap second receiving condition that the leap second acquisition section 460 acquires the leap second information is satisfied, a time correction section 450 corrects internal time information using the time information acquired by the time measuring section 410. A display control section 480 controls a display unit 90 to display the time based on the internal time information corrected by the time correction section 450, using a pointer 12. When a display switch command is output before reception of the leap second information by the leap second acquisition section 460, the display control section 480 controls the display unit 90 to display leap second wait information representing that the electronic watch is in a state of leap second information reception waiting, using the pointer 12.

Description

  The present invention relates to an electronic timepiece that receives a satellite signal transmitted from a position information satellite and corrects a display time, and a display control method for the electronic timepiece.

When time correction is performed by receiving a satellite signal transmitted from a GPS (Global Positioning System) satellite, it is necessary to acquire leap second information and reflect it in the time correction (see, for example, Patent Document 1).
The electronic timepiece of Patent Document 1 starts reception processing of satellite signals at regular times every day to acquire time information, and when it is in the acquisition period of leap second information, acquires leap second information following acquisition of time information. doing. After the time information is acquired and before the leap second information is acquired, notification information for notifying that the leap second information is in a reception standby state is displayed on the display unit. According to this, it is possible to prompt the user to move to a place where satellite signals can be easily received, and the leap second information reception success rate can be improved.
Here, the notification information is displayed in a count-down manner, for example, by moving the second hand counterclockwise.

JP 2011-33381 A

  However, in the method of Patent Document 1, when the notification information is displayed, the second hand movement speed and the second hand movement direction are different from the time display, so that a user who is not particularly familiar with the operation method looks at the second hand. There is a risk of misjudging that it is out of order. This problem may also occur when the notification information is displayed using a minute hand or hour hand.

  An object of the present invention is to provide an electronic timepiece and an electronic timepiece display control method capable of improving the success rate of receiving leap second information and improving usability.

  An electronic timepiece of the present invention includes a display unit provided with a pointer for displaying time, an operation unit that detects an input operation and outputs a display switching command, a display control unit that controls the display unit, time information, and A receiving unit that receives a satellite signal including leap second information, a time measuring unit that measures internal time information, a time measuring unit that controls the receiving unit to acquire time information, and a control unit that controls the receiving unit. The leap second acquisition unit for acquiring second information, the time correction unit for correcting the internal time information with the time information acquired by the time measurement unit, and the internal time information with the leap second information acquired by the leap second acquisition unit. A leap second correcting unit to correct, and when the time measuring unit acquires time information, if the leap second receiving condition for the leap second acquiring unit to acquire leap second information is met, the time correcting unit Is the time information acquired by the timekeeping unit. The display control unit displays the time based on the internal time information corrected by the time correction unit on the display unit using the pointer, and the display switching command is output. When the leap second information is received by the leap second acquisition unit, the leap second standby information indicating that the leap second information is in a reception standby state is displayed on the display unit using the pointer. It is characterized by being displayed.

Here, the case where the leap second reception condition is satisfied includes the case where the leap second information is not stored in the electronic timepiece, and the case where the internal time information is a leap second reception period (for example, June 1) set every six months. 30 days, December 1st to 31st) and the leap second information has not been successfully received in that period.
According to the present invention, the time measurement unit acquires time information, and the time correction unit corrects the internal time information with this time information. When the leap second reception condition is satisfied, the leap second acquisition unit detects the reception timing of the leap second information based on the time information acquired by the time measurement unit, and controls the reception unit according to the reception timing. Get leap second information.
At this time, the display control unit causes the display unit to display the time based on the internal time information corrected by the time correction unit using a pointer. When the operation unit is operated and the display switching command is output, the leap second indicating that the leap second information reception standby state is started before reception of the leap second information by the leap second acquisition unit is started. The standby information is displayed on the display unit using the pointer.
Thus, when the user performs a display switching operation in the leap second information reception standby state, the leap second standby information is displayed on the display unit. For this reason, the user can know that the reception of leap second information will start soon by performing a display switching operation in the case of manual reception processing, for example, the electronic clock The success rate of leap second information reception can be improved by moving to a place where the reception environment is good or maintaining a stationary state.
On the other hand, when the user does not perform a display switching operation in the leap second information reception standby state, the time corrected based on the received time information continues to be displayed on the display unit. For this reason, when the reception process is performed regardless of the user's intention as in the case of the automatic reception process, the user normally does not perform the display switching operation. The corrected time continues to be displayed on the display unit. For this reason, the user can confirm the corrected time, and even a user who is not familiar with the operation method does not mistakenly determine that the user is out of order by looking at the guidelines. Therefore, usability can be improved.

In the electronic timepiece according to the aspect of the invention, it is preferable that the display control unit displays the acquisition result of the time information by the time measuring unit on the display unit when the leap second reception condition is satisfied.
According to the present invention, since the user can confirm the acquisition result of the time information, the user can determine whether or not the received time information is reflected in the time displayed on the display unit.

  In the electronic timepiece of the invention, when the display control unit accepts a reception result display command, the display unit displays the reception result of the time information by the time measuring unit without displaying the reception result of the leap second information. It is preferable to make it.

According to the present invention, the user can determine whether or not the time displayed on the display unit is a result of successful reception of time information by confirming the reception result.
In addition, although the reception result of leap second information is not displayed, since leap second information is normally updated once every several years, if leap second information can be obtained once in that period, leap second information will be displayed at other timings. Even if the reception of information fails, the displayed time is often accurate if the time information can be received. However, when the result of reception failure of leap second information is displayed as the reception result, the user may misunderstand that the display time is incorrect even though the time information is successfully received and the display time is accurate. is there.
On the other hand, according to the present invention, if reception of time information is successful, reception indicating that reception was successful even if reception of leap second information performed following reception of time information has failed. The result is displayed. For this reason, it is possible to prevent a user from misunderstanding that the display time is incorrect because the reception result indicating that the reception has failed is displayed even though the displayed time is correct.
In addition, what is necessary is just to comprise so that the display command of the said reception result may be output, for example when the operation part provided in the electronic timepiece is operated. In this case, the user can easily confirm the reception result by operating the operation unit when it is desired to confirm the reception result.

In the electronic timepiece according to the aspect of the invention, it is preferable that the leap second standby information is a remaining time until the reception timing of leap second information that can be detected when the time measurement unit acquires time information.
According to the present invention, the user can accurately know the reception timing of the leap second information, and can reliably move the electronic timepiece to the place where the reception environment of the satellite signal is good at the reception timing of the leap second information. it can.

  The present invention includes a display unit having a pointer for time display, an operation unit that detects an input operation and outputs a display switching command, a reception unit that receives a satellite signal including time information and leap second information, A display control method for an electronic timepiece having a timekeeping unit for timing internal time information, the time measuring step for obtaining time information by controlling the receiving unit, and leap second information for controlling the receiving unit. The leap second acquisition step to be acquired, the time correction step to correct the internal time information with the time information acquired at the time measurement step, and the internal time information to be corrected with the leap second information acquired at the leap second acquisition step. A second correcting step, and a display step for displaying information on the display unit. When time information is acquired in the time measuring step, leap second information is acquired in the leap second acquiring step. When the leap second reception condition is satisfied, the time correction step corrects the internal time information with the time information acquired in the time measurement step, and the display step corrects the internal time corrected by the time correction step. The time based on the information is displayed on the display unit using the pointer, and when the display switching command is output, if the leap second information reception by the leap second acquisition step is not started, the leap second Leap second standby information indicating that the information is in a reception standby state is displayed on the display unit using the pointer.

  Also in the present invention, the same operational effects as the electronic timepiece can be obtained. In other words, the user can know that leap second information will be received soon by performing a display switching operation, for example, in the case of manual reception processing. The success rate of leap second information reception can be improved by moving to a better environment or maintaining a stationary state. In addition, as in the case of automatic reception processing, when reception processing is performed regardless of the user's intention, the user does not normally perform display switching operation, so based on the received time information The corrected time continues to be displayed on the display unit. For this reason, the user can confirm the corrected time, and even a user who is not familiar with the operation method does not mistakenly determine that the user is out of order by looking at the guidelines. Therefore, usability can be improved.

It is a front view which shows the electronic timepiece of this invention. It is a schematic sectional drawing of an electronic timepiece. It is a block diagram which shows the structure of an electronic timepiece. It is a figure explaining the structure of a navigation message. FIG. 3 is a diagram for explaining a configuration of a subframe 1. It is a block diagram which shows the structure of a memory | storage device. It is a flowchart which shows the reception process in the timekeeping mode in 1st Embodiment. It is a flowchart which shows the reception process in the timekeeping mode in 1st Embodiment. It is a figure which shows an example of the display of a display apparatus. It is a flowchart which shows the reception process in the timekeeping mode in 2nd Embodiment. It is a flowchart which shows the reception process in the timekeeping mode in 2nd Embodiment. It is a front view which shows the electronic timepiece of other embodiment.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 is a front view of an electronic timepiece 1 according to the first embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view of the electronic timepiece 1.
As shown in FIG. 1, the electronic timepiece 1 acquires time information by receiving satellite signals from at least one GPS satellite 100 out of a plurality of GPS satellites 100 orbiting the earth over a predetermined orbit. The position information is calculated by receiving satellite signals from at least three GPS satellites 100. The GPS satellite 100 is an example of a position information satellite, and a plurality of GPS satellites 100 exist over the earth. Currently, about 30 GPS satellites 100 orbit.

[Electronic clock]
The electronic timepiece 1 is a wristwatch worn on a user's wrist, and includes a dial 11 and hands 12, and measures and displays time.
Most of the dial plate 11 is formed of a non-metallic material (for example, plastic or glass) that easily transmits light and microwaves in the 1.5 GHz band.
The pointer 12 is provided on the surface side of the dial 11. The pointer 12 includes a second hand 121, a minute hand 122, and an hour hand 123 that rotate about the rotary shaft 13, and is driven by a step motor through a gear.

[Operation section operation]
In the electronic timepiece 1, processing corresponding to a manual operation of the input device (operation unit) 70 having the crown 14 and the buttons 15 and 16 is executed. Specifically, when the crown 14 is operated, a manual correction process for correcting the display time according to the operation is performed. When the button 15 is pressed for a long time (for example, 3 seconds or more), a manual reception process (forced reception process) for receiving satellite signals is executed.

Further, when the button 16 is pressed, a switching process for switching the reception mode (time measurement mode, positioning mode) is executed.
The time measurement mode is a mode in which one or more GPS satellites 100 are captured to receive satellite signals, and time information is acquired from the received satellite signals.
The positioning mode is a mode in which three or more GPS satellites 100 are captured, satellite signals are received, and position information is acquired by performing positioning calculation based on the received satellite signals. In the positioning mode, the time information can usually be acquired simultaneously from the satellite signal. However, it is not necessary to acquire time information from the satellite signal in the positioning mode.

The setting of the reception mode by operating the button 16 is stored in the reception mode storage unit 660 of the storage device 60 described later. When the timekeeping mode is set, the second hand 121 moves to the “Time” position (5 second position). When the positioning mode is set, the second hand 121 is moved to the “Fix” position (10 Move to the second position). For this reason, the user can easily confirm the set reception mode.
Note that the reception mode is not limited to the one indicated by the second hand 121, and a pointer (mode hand) indicating the mode may be separately provided and displayed.

  Note that the reception mode may be fixed to the timekeeping mode or the positioning mode regardless of the mode set by the button 16 during the regular reception process described later, or the reception mode set by the button 16 during the regular reception process. You may control by. In this embodiment, as described later, the timed reception process is fixed to the timekeeping mode.

  When the button 15 is pressed for a short time (for example, less than 3 seconds), a result display process for displaying the result of the previous reception process is performed. That is, when the reception is successful in the positioning mode, the second hand 121 moves to the position “Fix” (10-second position), and when the reception is successful in the time-measurement mode, the second hand 121 is “Time” (the 5-second position). ) Position. In the case of reception failure, the second hand 121 moves to the “N” position (20-second position).

Further, when a leap second reception condition described later is satisfied, when the button 15 is pressed during reception waiting for leap second information, a display switching process for switching the display of the display device 90 described later is executed. Note that the display switching process may be executed by pressing the button 16 instead of the button 15.
[Structure of electronic watch]
As shown in FIG. 2, the electronic timepiece 1 includes an outer case 17 made of a metal such as stainless steel (SUS) or titanium. The exterior case 17 is formed in a substantially cylindrical shape. A surface glass 19 that covers the opening via a bezel 18 is attached to the opening on the surface side of the outer case 17. The bezel 18 is made of a non-metallic material such as ceramics in order to improve satellite signal reception performance. A back cover 20 is attached to the opening on the back side of the exterior case 17. Inside the outer case 17, a dial 11, a movement 21, a solar panel 22, a GPS antenna 23, a secondary battery 24, and the like are arranged.

  The movement 21 includes a drive mechanism 210 that drives the hands 12. The drive mechanism 210 includes a step motor, a wheel train 211, a drive circuit that drives the step motor, and the like. The step motor is composed of a motor coil 212, a stator, a rotor, and the like, and drives the pointer 12 via the train wheel 211 and the rotating shaft 13.

A circuit board 25 is disposed on the rear cover 20 side of the movement 21.
On the circuit board 25, the receiving device 30 that processes the satellite signal received by the GPS antenna 23, the control device 40 that performs various controls such as driving control of the receiving device 30 and the step motor, and the solar panel 22 generate electric power. A charging circuit 80 for charging power to the secondary battery 24 is attached. The receiving device 30 and the control device 40 are driven by electric power supplied from the secondary battery 24.

[solar panel]
The solar panel 22 is a photovoltaic element that performs photovoltaic generation that converts light energy into electrical energy. Although not shown, the solar panel 22 includes 7 to 8 solar cells, and these solar cells are connected in series and output.
As shown in FIG. 2, the solar panel 22 is supported by a solar panel support substrate 220. The solar panel support substrate 220 is a conductive substrate having a thickness dimension of, for example, 0.1 mm formed of a metal material such as BS (brass), SUS (stainless steel), or titanium alloy. As a result, the solar panel support substrate 220 functions as a part of the GPS antenna 23 with the same current distribution as that of the GPS antenna 23 arranged close to the solar panel support substrate 220.
The solar panel support substrate 220 is incorporated so as not to contact the outer case 17. That is, the solar panel support substrate 220 is arranged without the outer peripheral edge being separated from and contacting the inner peripheral surface of the exterior case 17.

  The dial plate 11 and the solar panel 22 are formed so that the outer peripheral diameters of the dial 11 and the inner peripheral diameter of the dial ring 140 are hidden by the dial ring 140, so that the solar panel support substrate 220 is visually recognized from the outside. It will never be done. Further, the outer dimensions of the solar panel support substrate 220 are larger than those of the solar panel 22 and the dial plate 11 and are expanded to the lower surface position of the GPS antenna 23.

[GPS antenna]
The GPS antenna 23 is a ring antenna including a ring-shaped dielectric base material 231 having a rectangular cross-sectional shape and having an antenna electrode 232 formed on the surface thereof.
The dielectric base material 231 shortens the wavelength of radio waves. For example, so-called micalex (εr = 6), which is ceramics mainly composed of alumina (εr = 8.5) or ceramics composed of mica, for example. 0.5 to 9.5), glass (εr = 5.4 to 9.9), diamond (εr = 5.68), and the like.

  The antenna electrode 232 is formed by printing a conductive metal element such as copper or silver on the surface of the dielectric substrate 231, or attaching a conductive metal plate such as silver or copper to the surface of the dielectric substrate 231. Are formed integrally with the dielectric base material 231 in a linear manner. The antenna electrode 232 may be formed by patterning the surface of the dielectric substrate 231 by electroless plating.

The connection pin 31 is in contact with the antenna electrode 232. The connection pin 31 is inserted into a substantially cylindrical connection base 32. The connection base 32 is connected to a printed wiring on the circuit board 25 and is erected.
The connection pin 31 and the connection base 32 are electrically connected to the receiving device 30 via printed wiring. The connection base 32 is provided with a biasing member such as a coil spring inside the cylinder, and biases the connection pin 31 inserted into the connection base 32 toward the antenna electrode 232 side. Thereby, the connection pin 31 is pressed against the feeding point of the antenna electrode 232, and the connection state between the connection pin 31 and the antenna electrode 232 is maintained even when, for example, an impact is applied to the electronic timepiece 1.

In this embodiment, the back cover 20 made of a conductive member also serves as a ground plate (reflecting plate) of the GPS antenna 23. The back cover 20 is electrically connected to a ground terminal 26 provided on the movement 21. The ground terminal 26 is connected to the ground potential of the receiving device 30 of the movement 21. For this reason, the back cover 20 is electrically connected to the ground potential of the receiving device 30 via the ground terminal 26, and a ground plate (reflective) that reflects radio waves incident from the surface glass 19 side toward the GPS antenna 23. Plate). Since the exterior case 17 of the conductive member that is in contact with the back cover 20 also has a ground potential, the exterior case 17 also functions as a ground plate.
Furthermore, since the back cover 20 and the outer case 17 are made of metal, in addition to functioning as a ground plate, the influence on the GPS antenna 23 when mounted on the user's arm can be avoided. That is, if the case is a plastic case, the resonance frequency of the GPS antenna 23 varies depending on the influence of the arm in the vicinity and when it is not worn, which is not preferable because of a performance difference. However, since the case is made of metal, the effect of the arm can be avoided by the shielding effect, and in this embodiment, there is almost no difference in antenna characteristics between when the sensor is mounted and when it is not mounted, and stable reception performance can be obtained. However, a plastic case can also be adopted.

[Secondary battery]
The secondary battery 24 is a power supply device for the electronic timepiece 1 and accumulates electric power generated by the solar panel 22.
In the electronic timepiece 1, the two electrodes of the solar panel 22 and the two electrodes of the secondary battery 24 can be electrically connected to each other by the two conductive coil springs 22A. The secondary battery 24 is charged by the photovoltaic power generation. In the present embodiment, a lithium ion secondary battery suitable for a portable device is used as the secondary battery 24. However, a lithium polymer battery or another secondary battery may be used. What is a secondary battery? Different power storage bodies (for example, capacitor elements) may be used.

[Circuit configuration of electronic watch]
FIG. 3 is a block diagram showing the configuration of the electronic timepiece 1. The electronic timepiece 1 includes a reception device 30 (reception unit), a control device 40, a timing device 50 (timer unit), a storage device 60, an input device 70 (operation unit), and a display device 90 (display unit).

[Receiver]
The receiving device 30 is a load driven by the electric power stored in the secondary battery 24, and receives a satellite signal transmitted from the GPS satellite 100 through the GPS antenna 23 when driven by the control device 40. Then, when the reception of the satellite signal is successful, the reception device 30 transmits information such as the acquired orbit information and GPS time information to the control device 40. On the other hand, when the reception of the satellite signal fails, the reception device 30 transmits information to that effect to the control device 40. Note that the configuration of the receiving device 30 is the same as the configuration of a known GPS receiving circuit, and a description thereof will be omitted.

[Navigation message]
FIG. 4A to FIG. 4C are diagrams for explaining the configuration of the navigation message included in the satellite signal received by the receiving device 30.
As shown in FIG. 4A, the navigation message is configured as data with a main frame of 1500 bits as a unit. The main frame is divided into five sub-frames 1 to 5 each having 300 bits. Data of one subframe is transmitted from each GPS satellite 100 in 6 seconds. Accordingly, data of one main frame is transmitted from each GPS satellite 100 in 30 seconds.

  As shown in FIG. 5, the subframe 1 includes satellite correction data including week number data (WN) and satellite health status (SVhealth). The week number data is information representing a week including the current GPS time information. The starting point of the GPS time information is January 6, 1980, 00:00:00 in UTC (Coordinated Universal Time), and the week starting on this day is the week number 0. Week number data is updated on a weekly basis.

  The satellite health state (SVhealth) is a code indicating whether or not there is an abnormality in the satellite, and by checking this code, it is possible to control so as not to use the signal of the satellite with the abnormality. Specifically, when the health satellite state is “0”, it indicates that the navigation message is normal, and when the health satellite state is “1”, it indicates that some or all of the navigation messages are abnormal.

Of the five sets of subframes, subframes 1 to 3 contain information unique to each satellite, so the same content is repeatedly transmitted each time. Specifically, it includes clock correction information and orbit information (ephemeris) of the transmitting satellite itself. On the other hand, subframes 4 and 5 include orbit information (almanac) and ionosphere correction information of all satellites, and these are divided into pages and accommodated in subframes because of the large number of data.
That is, the data transmitted in subframes 4 and 5 are each divided into pages 1 to 25, and the contents of different pages are sent in order for each frame. Since it takes 25 frames to transmit the contents of all pages, it takes 12 minutes and 30 seconds to receive all the information of the navigation message.

  Further, subframes 1 to 5 include, from the beginning, a TLM (Telemetry) word storing 30-bit TLM (Telemetry word) data and a HOW word storing 30-bit HOW (hand over word) data. It is.

  Therefore, TLM words and HOW words are transmitted from the GPS satellite 100 at intervals of 6 seconds, whereas satellite correction data such as week number data, ephemeris parameters, and almanac parameters are transmitted at intervals of 30 seconds.

  As shown in FIG. 4B, the TLM word includes preamble data, a TLM message, a reserved bit, and parity data.

  As shown in FIG. 4C, the HOW word includes GPS time information called TOW (Time of Week, also referred to as “Z count”). In the Z count data, the elapsed time from 0 o'clock every Sunday is displayed in seconds, and it returns to 0 at 0 o'clock on the next Sunday. That is, the Z count data is information in units of seconds indicated every week from the beginning of the week. This Z count data indicates GPS time information at which the first bit of the next subframe data is transmitted. For example, the Z count data of subframe 1 indicates GPS time information at which the first bit of subframe 2 is transmitted. The HOW word also includes 3-bit data (ID code) indicating the ID of the subframe.

The leap second information is stored in page 18 of subframe 4. That is, in the subframe 4 and page 18 of the satellite signal, “current leap second Δt _LS ”, “leap second update week WN _LSF ”, “leap second update date DN”, “ Each data of the leap second Δt _LSF after the update is stored.
The “leap second update week, leap second update date, and leap second after update” is information necessary for the next leap second update process. If it is decided to perform leap second update, these pieces of information are updated to new data about six months before the update date. The data remains as it is even after the leap second update. For this reason, “current leap second Δt _LS ” and “updated leap second Δt _LSF ” have the same value until the execution of the next leap second update is determined. Therefore, if Δt _LS and Δt _LSF are the same value, there is no plan to update, and if they are different values, it can be determined that there is a plan to update.

Furthermore, since the time information (Z count) is stored in all subframes, it can be received at intervals of 6 seconds.
Therefore, when the calendar is not set, such as after a system reset, it is necessary to receive subframe 1 transmitted every 30 seconds, acquire the week number and satellite health status, and grasp the date information. . In addition, in order to calculate UTC from the GPS time calculated from the week number and the Z count, subframe 4 and page 18 transmitted every 12.5 minutes are received and information on “current leap second” is obtained. There is a need to.

  On the other hand, after acquiring the week number and the current leap second, the elapsed time from the time when the week number was acquired can be counted, so the acquired week number and elapsed time can be counted without acquiring the week number again. , The current week number of the GPS satellite 100 is known. Accordingly, if only the Z count is acquired, the current GPS time can be acquired, and UTC can be obtained by correcting the current leap second information.

[Time measuring device]
The time measuring device 50 includes a crystal resonator driven by the electric power stored in the secondary battery 24, and updates time data using a reference signal based on an oscillation signal of the crystal resonator.
[Display device]
The display device 90 includes the pointer 12 and the dial 11 and displays the time.
[Input device]
When the button 15 is operated, the input device 70 detects this and outputs a display switching command for switching the display of the display device 90.

[Storage device]
As shown in FIG. 6, the storage device 60 includes a time data storage unit 600, a reception mode storage unit 660, a time zone data storage unit 670, and a scheduled reception time storage unit 680.

  The time data storage unit 600 stores reception time data 610, leap second update data 620, internal time data 630, clock display time data 640, and time zone data 650.

  The reception time data 610 stores time information (GPS time information) acquired from satellite signals. This reception time data 610 is normally updated every second by the time measuring device 50, and is corrected by the acquired time information (GPS time information) when a satellite signal is received.

  The leap second update data 620 stores at least current leap second data. In addition, when each data of “leap second update week, leap second update date, leap second after update” is acquired, these data are also stored in the leap second update data 620.

  The internal time data 630 stores internal time information. This internal time information is updated by the GPS time information stored in the reception time data 610 and the “current leap second” stored in the leap second update data 620. That is, UTC (Coordinated Universal Time) is stored in the internal time data 630. When the reception time data 610 is updated by the timing device 50, the internal time information is also updated.

  The clock display time data 640 stores time data obtained by adding the time zone data (time zone information, time difference information) of the time zone data 650 to the internal time information of the internal time data 630. The time zone data 650 is set by position information obtained when received in the positioning mode.

  The reception mode storage unit 660 stores the reception mode set by operating the button 16 as described above.

  The time zone data storage unit 670 stores location information (latitude, longitude) and time zone information (time difference information) in association with each other. For this reason, when the position information is acquired in the positioning mode, the control device 40 can acquire the time zone data based on the position information (latitude, longitude).

  The time zone data storage unit 670 may further store a city name and time zone data in association with each other. In this case, when the user selects a city name to know the local time by operating the input device 70, the control device 40 searches the time zone data storage unit 670 for the city name set by the user, Time zone data corresponding to the city name may be acquired and set in the time zone data 650.

  The scheduled reception time storage unit 680 stores the scheduled reception time for executing the scheduled reception process in the timing unit 410. As this scheduled reception time, the time when the forced reception was successful by operating the button 15 last time is stored.

[Control device]
The control device 40 is composed of a CPU that controls the electronic timepiece 1. The control device 40 includes a time measurement unit 410, a positioning unit 420, a time zone setting unit 430, a time zone correction unit 440, a time correction unit 450, a leap second acquisition unit 460, a leap second correction unit 470, A display control unit 480.

[Timekeeping section]
The time measurement unit 410 operates the reception device 30 to perform reception processing in the time measurement mode. In this embodiment, the reception process in the timekeeping mode is executed by the automatic reception process and the manual reception process.
There are two types of automatic reception processing: scheduled automatic reception processing and optical automatic reception processing. In other words, the time measuring unit 410 operates the receiving device 30 in the time measuring mode when the time display data 640 that is timed reaches the time reception time stored in the time reception time storage unit 680. The scheduled automatic reception process is performed.
In addition, the time measuring unit 410 operates the receiving device 30 to measure time when the generated voltage or generated current of the solar panel 22 exceeds the set value and it can be determined that the solar panel 22 is irradiated with sunlight outdoors. Performs automatic optical reception in mode. Note that the number of processes for operating the receiving device 30 in the power generation state of the solar panel 22 may be limited to once a day.
Further, when the user presses the button 15 of the input device 70 and performs a forced reception operation in a state in which the time measurement mode is set, the time measurement unit 410 operates the reception device 30 to perform the operation in the time measurement mode. Perform manual reception processing.
The time measuring unit 410 captures at least one GPS satellite 100 by the receiving device 30, receives a satellite signal transmitted from the GPS satellite 100, and acquires time information.

[Positioning part]
When the positioning unit 420 is set to the positioning mode and the user performs a forced reception operation by pressing the button 15 of the input device 70, the positioning unit 420 operates the reception device 30 to perform reception processing in the positioning mode. .
Note that the control device 40 performs the reception processing in the time measurement mode by the time measurement unit 410 and the positioning unit 420 according to the time during which the button 15 is pressed regardless of the reception mode stored in the reception mode storage unit 660. The reception process in the positioning mode by may be switched and executed. For example, the control device 40 performs reception processing in the timekeeping mode when the button 15 is pressed for the first set time (3 seconds or more and less than 6 seconds), and is pressed for the second set time (6 seconds or more). Alternatively, reception processing in the positioning mode may be performed.

  When the positioning unit 420 starts reception processing in the positioning mode, the receiving device 30 captures at least three, preferably four or more GPS satellites 100, and receives satellite signals transmitted from the respective GPS satellites 100. Calculate and acquire location information. The positioning unit 420 can also acquire time information at the same time when a satellite signal is received.

[Time zone setting section]
When the positioning unit 420 succeeds in acquiring the position information, the time zone setting unit 430 sets time zone data based on the acquired position information (latitude, longitude). Specifically, time zone data (time zone information, that is, time difference information) corresponding to the position information is selected and acquired from the time zone data storage unit 670 and stored in the time zone data 650.
For example, since Japan Standard Time (JST) is a time (UTC + 9) that is 9 hours ahead of UTC, when the location information acquired by the positioning unit 420 is Japan, the time zone setting unit 430 Time difference information (+9 hours) in Japan standard time is read from the data storage unit 670 and stored in the time zone data 650.

[Time zone correction section]
When the time zone setting unit 430 sets time zone information, the time zone correction unit 440 corrects the clock display time data 640 using the time zone data. Therefore, the clock display time data 640 is a time obtained by adding the time zone data to the internal time data 630 which is UTC.

[Time correction section]
When the time correction unit 450 succeeds in acquiring the time information in the reception process of the time measuring unit 410 or the positioning unit 420, the time correction unit 450 corrects the reception time data 610 with the acquired time information. For this reason, the internal time data 630 and the clock display time data 640 are also corrected.

[Leap second acquisition part]
The leap second acquisition unit 460 follows the acquisition of time information by the time measurement unit 410 or the positioning unit 420 when reception processing by the time measurement unit 410 or the positioning unit 420 is performed when the leap second reception condition is satisfied. The leap second information is acquired by operating the receiving device 30.
The case in which the leap second reception condition is satisfied is a case in which the leap second information is not stored in the leap second update data 620 and a date according to the internal time information stored in the internal time data 630 is a leap second reception period. In addition, this is a case where the leap second information has not been successfully received during that period.
In the present embodiment, the leap second reception period is set every six months. That is, at present, the update of leap seconds is at least every six months, and in recent years, it is about once a year to several years. The first priority date of the specific leap second update timing is the last day of December and June. Further, the leap second information includes information about the next leap second update date and the leap second after the update.
Therefore, if leap second information is received every six months (specifically, June and December), it can also be determined whether or not there is a leap second update schedule in the next six months.
Therefore, the leap second acquisition unit 460 has the date of the internal time information stored in the internal time data 630 from June 1 to 30 and from December 1 to 31, and the leap second in that period. If the information has not been successfully received, it is determined that the leap second reception condition is satisfied, and the leap second information acquisition process is performed.
Since the leap second reception period may be a half year before the leap second update date, it is not limited to June and December, but may be set every six months, such as July and January, August and February. That's fine.

Then, the leap second acquisition unit 460 acquires at least one GPS satellite 100 by the receiving device 30 and receives a satellite signal transmitted from the GPS satellite 100 to acquire leap second information. As described above, the leap second information is stored in the page 18 of the subframe 4 and transmitted at intervals of 12.5 minutes.
Here, the navigation message is managed on a weekly basis, and the transmission timing of leap second information is also determined. For this reason, the leap second acquisition unit 460 performs reception at the transmission timing of the leap second information based on the internal time data 630 timed by the time measuring device 50.
Note that when the leap second acquisition unit 460 operates the receiving device 30 to receive a satellite signal, the leap second acquisition unit 460 confirms the subframe or page of the satellite signal, and grasps the timing when the leap second information is transmitted next. Also good. In this case, if the time until the leap second information is transmitted is short (for example, less than 60 seconds), the leap second acquisition unit 460 continues the reception and acquires the leap second information. If the time until the leap second information is transmitted is long (for example, 60 seconds or longer), the leap second acquisition unit 460 temporarily stops the reception process and resumes reception in accordance with the transmission timing of the leap second information.

[Leap second correction part]
The leap second correction unit 470 corrects the leap second information stored in the leap second update data 620 using the leap second information acquired by the leap second acquisition unit 460.

[Display control unit]
The display control unit 480 causes the display device 90 to display the time indicated by the clock display time data 640. In other words, the display control unit 480 controls the drive mechanism 210 to move the hands 12 to display the time on the display device 90.
In addition, when the leap second acquisition unit 460 is on standby to receive leap second information, the display control unit 480 displays leap second standby information indicating that the leap second information is in a reception standby state. To display. That is, the display control unit 480 controls the drive mechanism 210 to move the second hand 121, and causes the display device 90 to display the remaining time until the leap second information reception start time in a countdown format with an interval of 1 minute.
Then, when a display switching command is output from the input device 70, the display control unit 480 switches between time display and leap second standby information display. Note that the display control unit 480 first displays the time.

Further, when the input device 70 is operated and the display command for the reception result is received, the display control unit 480 displays the reception result of the time information by the time measuring unit 410 without displaying the reception result of the leap second information. The display device 90 is displayed by moving the second hand 121 by controlling 210. That is, when the reception is successful, the second hand 121 is moved to the “Time” (5 second position) position, and when reception is unsuccessful, the second hand 121 is moved to the “N” position (20 second position).
That is, in the timekeeping mode, when receiving leap second information following reception of time information, if reception of time information is successful, reception is successful even if reception of leap second information fails. Then, the display control unit 480 moves the second hand 121 to “Time” (5 second position).

[Operation of control device]
7 and 8 are flowcharts showing a reception process in the timekeeping mode of the electronic timepiece 1 in the first embodiment.
The time measuring unit 410 measures the reception mode when a condition for starting automatic reception is met or when there is a reception operation in which the button 15 is pressed for a first set time (for example, 3 seconds or more and less than 6 seconds). The hour mode is set (SA11), and the reception process is started (SA12). As described above, the time measuring unit 410 determines that the condition for starting automatic reception is met when the scheduled reception time comes and when the generated voltage or current at the solar panel 22 exceeds a set value. .
That is, the time measuring unit 410 performs a search for operating the receiving device 30 to acquire the GPS satellite 100 and acquires at least one GPS satellite 100. Then, when the time measuring unit 410 captures the GPS satellite 100, the receiving device 30 starts receiving the satellite signal and acquires time information.

Next, the time measuring unit 410 determines whether the reception is successful (SA13). That is, when the time information is acquired, it is determined that the reception is successful when it is determined that the acquired time information is correct by comparing with the internal time.
When the time measuring unit 410 determines No in SA13, the time measurement unit 410 ends the reception process.

  When it is determined Yes in SA13, the time correction unit 450 corrects the internal time (SA14). That is, the time correction unit 450 corrects the reception time data 610 and the internal time data 630 based on the time information acquired by the time measurement unit 410. At this time, when the current leap second is stored in the leap second update data 620, the leap second correction unit 470 corrects the internal time data 630 with the stored current leap second. When the internal time data 630 is corrected, the clock display time data 640 is also corrected with the set time zone data 650.

Next, the display control unit 480 causes the display device 90 to display the current time (SA15). That is, the display control unit 480 causes the display device 90 to display the time indicated by the clock display time data 640. Specifically, the display control unit 480 controls the drive mechanism 210 and moves the hands 12 (second hand 121, minute hand 122, hour hand 123) to display the time.
For example, the display before the current time is displayed on the display device 90 is 3:00:00 as shown in FIG. 9A, and the clock display time data 640 is 9:30:00 in SA14. When the display is corrected, the display control unit 480 moves the pointer 12 to display 9:30:00 on the display device 90 as shown in FIG. 9B.
Thereby, the time corrected based on the received time information is displayed on the display device 90.

Next, the control device 40 determines whether the leap second reception condition is satisfied (SA16). That is, the control device 40 determines that the leap second information is not stored in the leap second update data 620, and that the date according to the internal time information stored in the internal time data 630 is from June 1 to 30th, December 1 If it is between day 31 and day 31 and the leap second information has not been successfully received during that period, it is determined Yes at SA16.
When it determines with No by SA16, the control apparatus 40 complete | finishes a reception process.

  When it is determined Yes in SA16, the leap second acquisition unit 460 determines whether it is time to transmit leap second information (leap second information reception start time) (SA17). The leap second acquisition unit 460 can grasp the leap second information reception start time based on the internal time data 630 timed by the time measuring device 50.

When it is determined No in SA17, the display control unit 480 determines whether a display switching command is output from the input device 70 (SA18).
When it is determined No in SA18, the leap second acquisition unit 460 returns the process to SA17.
That is, when there is no display switching command, the processes of SA17 and SA18 are repeatedly executed until the leap second information reception start time is reached, and the leap second acquisition unit 460 waits until the leap second information reception start time.
That is, as described above, leap second information is transmitted at 12.5 minute intervals. For this reason, when receiving leap second information continuously after starting reception at SA12, it is necessary to continue the reception process for a maximum of 12.5 minutes. In this case, the reception time becomes longer and the power consumption increases. On the other hand, in the present embodiment, the leap second acquisition unit 460 waits until the leap second information reception start time is reached, so that the time for the reception process can be shortened.
While the processes of SA17 and SA18 are repeatedly executed, the display control unit 480 continues to display the time indicated by the clock display time data 640 on the display device 90 using the second hand 121, the minute hand 122, and the hour hand 123. .

On the other hand, when it is determined Yes in SA18, the display control unit 480 switches the display of the display device 90 and causes the display device 90 to display leap second standby information (SA19).
The display of the leap second standby information in SA19 is specifically performed as follows. That is, the display control unit 480 controls the drive mechanism 210 to move the second hand 121 as shown in FIG. 9C, and the remaining time until the leap second information reception start time is determined as leap second standby information. The data is displayed on the display device 90 in a countdown format with an interval of 1 minute. At this time, the display control unit 480 continues to display the time using the minute hand 122 and the hour hand 123.

When the process of SA19 is executed, the leap second acquisition unit 460 returns the process to SA17.
That is, when the display switching command is output, the processes of SA17 to SA19 are repeatedly executed until the leap second information reception start time is reached, and the leap second acquisition unit 460 waits until the leap second information reception start time.
The display control unit 480 causes the display device 90 to display the leap second standby information while the processing of SA17 to SA19 is repeatedly executed.

When the leap second information reception start time is reached and it is determined Yes in SA17, the leap second acquisition unit 460 starts the leap second information reception process (SA20). The leap second acquisition unit 460 performs a search for operating the receiving device 30 to acquire the GPS satellite 100 and acquires at least one GPS satellite 100. Then, when the leap second acquisition unit 460 captures the GPS satellite 100, the reception device 30 receives the satellite signal and acquires the leap second information from the GPS satellite 100.
The leap second information reception start time is set in consideration of the search time for capturing the GPS satellite 100.
Here, if the display switching command is not output before the reception of the leap second information is started, the time indicated by the clock display time data 640 is continuously displayed on the display device 90.
On the other hand, when a display switching command is output before starting the reception of leap second information, in the display device 90, the second hand 121 finishes the countdown display and stops at the 0 second position.

Next, the leap second acquisition unit 460 determines whether leap second information has been received from the GPS satellite 100 (SA21).
When it is determined No in SA21, the leap second acquisition unit 460 determines whether a reception timeout has occurred (SA22). In the present embodiment, when 60 seconds or more have elapsed from the start of receiving leap second information (SA20), it is determined that a reception timeout has occurred.
Since it is less than 60 seconds from the start of leap second information reception, if it is determined No in SA22, the leap second acquisition unit 460 returns to SA21 and continues receiving leap second information.
On the other hand, if it is determined Yes in SA22 and it is determined that a reception timeout has occurred, the leap second acquisition unit 460 advances the process to SA24.

When it is determined Yes in SA21, the leap second correction unit 470 stores the leap second information acquired by the leap second acquisition unit 460 in the leap second update data 620 of the storage device 60.
Then, the leap second correcting unit 470 corrects the internal time data 630 using the current leap second of the leap second update data 620 (SA23). When the internal time data 630 is corrected, the clock display time data 640 is also corrected with the set time zone data 650.

After the processing of SA23 is performed and when it is determined Yes in SA22, the display control unit 480 displays the current time on the display device 90 (SA24). That is, the display control unit 480 causes the display device 90 to display the time indicated by the clock display time data 640. Specifically, the display control unit 480 controls the driving mechanism 210 and moves the hands 12 (second hand 121, minute hand 122, hour hand 123) as necessary, for example, as shown in FIG. 9D. Then, the time is displayed on the display device 90.
Thereby, after the process of SA23 is performed, the time corrected based on the received time information and leap second information is displayed on the display device 90. In addition, when it is determined Yes in SA22, the received time information and the time corrected based on the stored leap second information are displayed on the display device 90.

[Effects of First Embodiment]
According to this embodiment, the following operational effects can be obtained.
According to the electronic timepiece 1, when the user presses the button 15 in the leap second information reception standby state, the leap second standby information is displayed on the display device 90. For this reason, for example, in the case of manual reception processing, when the user presses the button 15, leap second standby information is displayed on the display device 90. For this reason, the user can know that the reception of leap second information will start soon, for example, moving the electronic timepiece 1 to a place where the satellite signal reception environment is good or maintaining the stationary state. Thus, the success rate of receiving leap second information can be improved.
On the other hand, when the user does not press the button 15 in the leap second information reception standby state, the time corrected based on the received time information continues to be displayed on the display device 90. For this reason, for example, when the reception process is performed regardless of the user's intention as in the case of the automatic reception process, the user does not normally press the button 15, and therefore based on the received time information. The corrected time continues to be displayed on the display device 90. For this reason, the user can confirm the corrected time, and even a user who is not familiar with the operation method does not mistakenly determine that the user is out of order by looking at the pointer 12. Therefore, usability can be improved.

When the display control unit 480 receives the reception result display command, the display control unit 480 does not display the reception result of the leap second information, but displays the reception result indicating whether or not the time measurement unit 410 has successfully received the time information. 90.
According to this, the user can determine whether or not the time displayed on the display device 90 is a result of successful reception of the time information by confirming the reception result.
In addition, although the reception result of leap second information is not displayed, since leap second information is normally updated once every several years, if leap second information can be obtained once in that period, leap second information will be displayed at other timings. Even if the reception of information fails, the displayed time is often accurate if the time information can be received. However, when the result of reception failure of leap second information is displayed as the reception result, the user may misunderstand that the display time is incorrect even though the time information is successfully received and the display time is accurate. is there.
On the other hand, according to the electronic timepiece 1, if reception of time information is successful, it indicates that reception is successful even if reception of leap second information performed following reception of time information has failed. The reception result is displayed. For this reason, it is possible to prevent a user from misunderstanding that the display time is incorrect because the reception result indicating that the reception has failed is displayed even though the displayed time is correct.
Since the reception result display command is output when the input device 70 is operated, the user can easily check the reception result by operating the input device 70 when the user wants to check the reception result. .

The leap second standby information is the remaining time until the reception timing of the leap second information.
According to this, the user can accurately know the reception timing of the leap second information, and can reliably move the electronic timepiece 1 to a place where the reception environment of the satellite signal is good at the reception timing of the leap second information. it can.

[Second Embodiment]
Next, 2nd Embodiment of this invention is described based on drawing.
The second embodiment is different from the first embodiment in that the display control unit 480 displays the reception result of the time information on the display device 90 in the reception process in the timekeeping mode. Other configurations are the same as those of the first embodiment.
10 and 11 are flowcharts showing reception processing in the timekeeping mode of the electronic timepiece according to the second embodiment.
As shown in FIGS. 10 and 11, the control device 40 performs the processes of SB11 to SB26. Here, the processing of SB11 to SB24 is the same processing as SA11 to SA24 in the first embodiment, and thus description thereof is omitted.

In the first embodiment, when the time measurement unit 410 fails to receive time information (No in SA13), the reception process is terminated.
On the other hand, in the second embodiment, when the time measuring unit 410 fails to receive time information (No in SB13), the display control unit 480 displays a reception result indicating that reception of time information has failed. It is displayed on the display device 90 (SB25).
Specifically, the display control unit 480 controls the drive mechanism 210 to move the second hand 121 to the “N” position (20-second position).
Thereafter, the display control unit 480 ends the reception process.

In the first embodiment, after the time correction unit 450 corrects the internal time (SA14), the display control unit 480 displays the current time on the display device 90 (SA15).
In contrast, in the second embodiment, after the time correction unit 450 corrects the internal time (SB14), the display control unit 480 displays a reception result indicating that the time information has been successfully received, on the display device 90. It is displayed (SB26).
Specifically, the display control unit 480 controls the drive mechanism 210 to move the second hand 121 to the position “Time” (5 second position).
Thereafter, the display control unit 480 displays the current time on the display device 90 (SB15).

[Effects of Second Embodiment]
According to such 2nd Embodiment, the same effect is obtained by the same structure and process as the said 1st Embodiment, and the following effects are obtained.
When the leap second reception condition is satisfied, the display control unit 480 causes the display device 90 to display the time information acquisition result by the time measuring unit 410 before the leap second acquisition unit 460 acquires the leap second information (SB26). .
As a result, the user can check the acquisition result of the time information, and therefore can determine whether or not the received time information is reflected in the time displayed on the display device 90.

[Other Embodiments]
In addition, this invention is not limited to the structure of each said embodiment, A various deformation | transformation implementation is possible within the range of the summary of this invention.
For example, in the above embodiment, in SA18 and SB18, the display control unit 480 continuously displays the time using the minute hand 122 and the hour hand 123 when displaying the leap second standby information on the display device 90. 122 and the hour hand 123 may be stopped and the time may not be displayed.
In the embodiment, in SA18 and SB18, the second hand 121 is used for displaying the leap second standby information, but the minute hand 122 and the hour hand 123 may be used. Further, a plurality of hands may be used like the second hand 121 and the minute hand 122. In this case, the countdown display may be performed every minute using the minute hand 122 until the minute before the leap second information reception start time, and thereafter the countdown display may be performed every second using the second hand 121.
In the embodiment, the reception mode is set to the time measurement mode in SA11 and SB11, but may be set to the positioning mode.
In the second embodiment, the display of the reception result of the SB 26 is performed before the leap second information is acquired. However, even if it is performed after the leap second information is received (determined as Yes in SB21). Good.

In the embodiment, after the display control unit 480 receives the display switching command once, when the input device 70 is operated and the display switching command is received again, the display control unit 480 displays the display on the display device 90. The leap second standby information may be switched to the time information.
In the embodiment, when a display switching command is output after the leap second reception start time, the display control unit 480 causes the display device 90 to display leap second reception information indicating that leap second information is being received. Also good. The leap second reception information is indicated by the second hand 121 indicating the 0 second position, for example.
In the above embodiment, when the display switching command is not output, the time indicated by the clock display time data 640 is continuously displayed on the display device 90 even after the leap second reception is started. It may be stopped and the pointer 12 may be stopped. In this case, the influence of noise accompanying movement of the hands 12 can be reduced, and the time information reception success rate can be improved.

In the embodiment described above, the electronic timepiece 1 has the time measurement mode and the positioning mode. However, in addition to this, the electronic timepiece 1 may have a leap second reception mode.
The leap second reception mode is a mode in which one or more GPS satellites 100 are captured, satellite signals are received, and leap second information transmitted at a predetermined interval (12.5 minutes in the case of GPS satellite signals) is acquired. It is. In the leap second reception mode, time information is simultaneously acquired from the satellite signal.
The leap second reception mode can be set by operating the button 16 as in the time measurement mode and the positioning mode. When the reception mode is set to the leap second reception mode, the second hand 121 moves to the “Leap (leap second)” position (55 second position).
When reception processing is performed in the leap second reception mode, the time measuring unit 410 acquires time information, and subsequently, the leap second acquisition unit 460 acquires leap second information.
At this time, the display control unit 480 causes the display device 90 to display the leap second standby information before the leap second acquisition unit 460 acquires the leap second information.
According to this, the user can know that the reception of the leap second information will start soon, for example, by moving the electronic timepiece 1 to a place where the reception environment of the satellite signal is good, The success rate of information reception can be improved.

As shown in FIG. 12, the electronic timepiece of the invention may include indicator hands 12A in addition to the hands 12, and the dial plate 11 may further include a scale 111 corresponding to the indicator hands 12A.
In this case, the indicator needle 12A indicates the reception mode. According to this, for example, even when the second hand 121 displays time information during the automatic reception process, the user is in the reception process by looking at the indicator hand 12A, and the reception mode is changed. I can confirm.

  In the above-described embodiment, the GPS satellite 100 has been described as an example of the position information satellite. However, as the position information satellite of the present invention, not only the GPS satellite 100 but also Galileo (EU), GLONASS (Russia), Hokuto (China), and the like. Other global navigation satellite systems (GNSS), geostationary satellites such as SBAS, and position information satellites that transmit satellite signals including time information such as quasi-zenith satellites may be used.

The electronic timepiece of the present invention is not limited to the one provided with the receiving device 30 that receives the satellite signal of the GPS satellite 100, but also an electronic timepiece having a device with high power consumption, such as a device for wireless communication with other electronic devices. Available.
In addition, the electronic timepiece is not limited to a wristwatch, and includes, for example, a mobile phone, a portable GPS receiver used for mountain climbing, and the like, and a device having a clock mechanism that is carried and used. Widely available.

  DESCRIPTION OF SYMBOLS 1 ... Electronic timepiece, 11 ... Dial, 12 ... Pointer, 30 ... Receiving device (reception part), 410 ... Time measuring part, 450 ... Time correction part, 460 ... Leap second acquisition part, 470 ... Leap second correction part, 480 ... Display control unit, 50 ... Timer (timer), 70 ... Input device (operation unit), 90 ... Display device (display).

Claims (5)

A display unit with a pointer for time display;
A display control unit for controlling the display unit;
An operation unit for detecting an input operation and outputting a display switching command;
A receiver for receiving satellite information including time information and leap second information;
A timekeeping section that keeps internal time information,
A time measuring unit for controlling the receiving unit to acquire time information;
A leap second acquisition unit for controlling the receiving unit to acquire leap second information;
A time correction unit for correcting the internal time information with the time information acquired by the time measurement unit;
A leap second correction unit that corrects the internal time information with the leap second information acquired by the leap second acquisition unit,
When the time measurement unit acquires time information, when the leap second acquisition condition is satisfied, the leap second acquisition unit acquires leap second information.
The time correction unit corrects the internal time information with the time information acquired by the time measurement unit,
The display control unit
The time based on the internal time information corrected by the time correction unit is displayed on the display unit using the pointer,
When the display switching command is output, if the leap second information is not yet received by the leap second acquisition unit, the leap second standby information indicating that the leap second information is in a reception standby state is displayed. An electronic timepiece characterized in that the electronic timepiece is displayed on the display unit. The electronic timepiece according to claim 1,
The electronic timepiece according to claim 1, wherein the display control unit displays the acquisition result of the time information by the time measuring unit on the display unit when the leap second reception condition is satisfied. The electronic timepiece according to claim 1 or 2,
The display control unit, when receiving a reception result display command, displays the reception result of the time information by the time measurement unit on the display unit without displaying the reception result of the leap second information. clock. The electronic timepiece according to any one of claims 1 to 3,
The leap second standby information is a remaining time until a reception timing of leap second information that can be detected when the time measuring unit acquires time information. A display unit with a pointer for time display;
An operation unit for detecting an input operation and outputting a display switching command;
A receiver for receiving satellite information including time information and leap second information;
A display control method for an electronic timepiece having a timekeeping unit for measuring internal time information,
A time measuring step of acquiring time information by controlling the receiving unit;
A leap second acquisition step of controlling the receiving unit to acquire leap second information;
A time correction step of correcting the internal time information with the time information acquired in the time measurement step;
A leap second correction step of correcting the internal time information with the leap second information acquired in the leap second acquisition step;
A display step of displaying information on the display unit,
When the time information is acquired in the time measurement step, when the leap second reception condition for acquiring the leap second information in the leap second acquisition step is satisfied,
The time correction step corrects the internal time information with the time information acquired in the time measurement step,
The display step includes
The time based on the internal time information corrected by the time correction step is displayed on the display unit using the pointer,
When the display switching command is output, the leap second standby information indicating that the leap second information is in a reception standby state before the reception of the leap second information by the leap second acquisition step is started. A display control method for an electronic timepiece, characterized in that the display is displayed on the display unit.

Images