JP2017036956A - Electronic timepiece and control method of electronic timepiece - Google Patents

Abstract

An electronic timepiece and an electronic timepiece control method capable of shortening a satellite search time without performing a capturing process of a non-existing satellite.
An electronic timepiece includes a receiving device that receives satellite signals, a display device that displays time, and a control device. The control device 300 instructs the reception device 121 to operate, and when there is an instruction from the reception instruction unit 310, the control device 300 selects a position information satellite in operation based on the operation information of the position information satellite. The selection unit 330 and the reception device 121 are controlled to search and acquire the position information satellite selected by the satellite selection unit 330 and receive the satellite signal, and the satellite signal received by the reception device 121. And a time correction unit 360 for correcting the internal time information based on the information.
[Selection] Figure 4

Description

  The present invention relates to an electronic timepiece that receives a satellite signal transmitted from a position information satellite such as a GPS satellite or a quasi-zenith satellite and corrects the time, and a method for controlling the electronic timepiece.

A satellite radio wave receiver that receives a quasi-zenith satellite in addition to a GPS satellite has been proposed (see Patent Document 1).
The quasi-zenith satellite system is a satellite system that uses a combination of quasi-zenith satellites arranged in multiple orbital planes (quasi-zenith orbits) so that one satellite can always be seen near the zenith in Japan. The orbit of the quasi-zenith satellite orbits the earth at the same period as the earth's rotation with an orbit inclination angle (orbit inclination from the equator plane).
Since this quasi-zenith satellite is always in the zenith direction in Japan, there is a high possibility that signals from the quasi-zenith satellite can be received even in places where GPS satellites are hidden by mountains or buildings and cannot be seen.

  The satellite radio wave receiver of Patent Document 1 includes a quasi-zenith satellite search means for searching for a quasi-zenith satellite, and a non-quasi-zenith satellite for searching for a non-quasi-zenith satellite after the quasi-zenith satellite search by the quasi-zenith satellite search means. A search means is provided. This satellite radio receiver always performs a search for a quasi-zenith satellite before a search for a non-quasi-zenith satellite (for example, a GPS satellite), so that the satellite's orbit information is not held and is started during a cold start. The time required for positioning is shortened.

  By the way, it is only a part of the revolution cycle that the quasi-zenith satellite can fly over high latitudes. For this reason, by arranging three or more satellites in orbit, one quasi-zenith satellite always stays above Japan. Therefore, the satellite radio wave receiver of Patent Document 1 is also premised on that three or more quasi-zenith satellites are arranged.

JP 2006-317225 A

However, only one quasi-zenith satellite is in test operation, and the remaining three are planned to be launched in the future. For this reason, although the number of quasi-zenith satellites that can be used varies depending on the time, this is not taken into account in the above-mentioned Patent Document 1. For this reason, in the satellite radio wave receiver of Patent Document 1, which presupposes that there are three or more quasi-zenith satellites, the search for three or more quasi-zenith satellites is performed first. There is a case. In this case, the reception of the non-quasi-zenith satellite is also delayed, and there is a problem that the search time for the satellite becomes longer and the reception time becomes significantly longer.
Such a problem is not limited to the quasi-zenith satellite, but is a problem common to various position information satellite systems to be maintained.

  An object of the present invention is to provide an electronic timepiece and a method for controlling the electronic timepiece that can shorten the search time of the satellite without performing the acquisition process of the nonexistent satellite.

  The electronic timepiece of the present invention includes a receiving device that receives a satellite signal transmitted from a position information satellite, a time display device that displays a time based on internal time information, and a control device, and the control device includes: A reception instructing unit for instructing operation of the receiving device, a satellite selecting unit for selecting a position information satellite in operation based on operation information of the position information satellite when instructed by the reception instruction unit, and the reception A receiving control unit that controls a device to search for and acquire a position information satellite selected by the satellite selection unit and receives a satellite signal; and based on information on the satellite signal received by the receiving device, And a time correction unit that corrects the time information.

  According to the present invention, the satellite selection unit selects a position information satellite in operation based on operation information of the position information satellite when receiving a satellite signal transmitted from the position information satellite. Then, the reception control unit controls the receiving device so as to search for and acquire the position information satellite selected by the satellite selection unit. For example, although it has been planned but not launched, the operation is started. There is no search for location information satellites. For this reason, the satellite search time can be shortened without performing the acquisition process of the nonexistent satellite. Therefore, in the electronic timepiece, the time until the reception result is obtained can be shortened, and the power consumption can be reduced.

In the electronic timepiece of the invention, it is preferable that the operation information includes at least one information of an operation start time, an operation stop time, and an operation abolition time of the position information satellite.
If the operation information includes information on the operation start time, the position information satellite can be excluded from the search target before the operation starts, and can be surely set as the search target after the operation starts. Further, if the operation information includes information on the operation stop time, it can be excluded from the search target while the operation of the position information satellite is stopped due to maintenance or the like. Further, if the operation information includes information on the operation abolition period, the position information satellite can be excluded from the search target after it is abolished due to the design life. Therefore, only the position information satellite in operation can be searched.

  The electronic timepiece of the present invention includes an operation information storage unit in which the operation information is stored, and the satellite selection unit stores the operation stored in the operation information storage unit when instructed by the reception instruction unit. It is preferable to select the position information satellite based on the information.

  If an operation information storage unit for storing operation information is provided, the operation information can be easily updated. For this reason, the latest operation information at the time of shipment of the electronic timepiece can be stored, and the operation information can be updated during maintenance of the electronic timepiece even after shipment. Therefore, even when the maintenance plan is changed in the middle, it is possible to easily update to the latest operation information and perform efficient reception control.

  In the electronic timepiece according to the aspect of the invention, it is preferable that the satellite selection unit selects the position information satellite from the operation information based on the internal time information when instructed by the reception instruction unit.

  According to the present invention, the satellite selection unit can select the position information satellite from the operation information based on the internal time information timed by the electronic timepiece, so that it can easily select the position information satellite that can be captured during the reception process. it can.

  In the electronic timepiece of the present invention, the electronic timepiece includes a reception time information storage unit in which the previous reception time information acquired in the previous reception process is stored, and when the satellite selection unit is instructed by the reception instruction unit, It is preferable to select the position information satellite from the operation information based on the previous reception time information.

  According to the present invention, the satellite selection unit can select a position information satellite from the operation information based on the previous reception time information stored in the reception time information storage unit. For this reason, even if the internal time information is largely deviated, the previous reception time information is used without referring to the internal time information, so that it is possible to select the position information satellite operated at the previous reception.

  In the electronic timepiece of the invention, the electronic timepiece includes an acquisition information storage unit that stores reception time information received within a predetermined period, and the satellite selection unit, when instructed by the reception instruction unit, Preferably, the position information satellite is selected from the operation information based on the reception time information stored in the operation information.

According to the present invention, the satellite selection unit can select a position information satellite from the operation information based on the reception time information stored in the acquired information storage unit. For this reason, even if the internal time information is greatly deviated, the reception time information is used without referring to the internal time information. You can choose.
Furthermore, the reception time information is reception time information received within a predetermined period, and is not limited to the previous reception time information. For example, even when the previous reception time information is incorrect information due to the influence of noise or the like. The correct date information can be grasped based on other reception time information of the predetermined period (for example, the past month). Therefore, it is possible to reliably select an operational position information satellite.

  In the electronic timepiece of the invention, it is preferable that the satellite selection unit also sets a search order of the selected position information satellites.

  For example, in the quasi-zenith satellite system, a quasi-zenith orbit satellite that orbits the quasi-zenith orbit and a geostationary orbit satellite that orbits the geostationary orbit will be operated. Therefore, if the satellite selection unit also sets the search order, searches for a quasi-zenith orbit satellite that has a high probability of being captured in the zenith direction first, and then searches for a geostationary orbit satellite, the time until the satellite can be acquired Can be shortened.

  In the electronic timepiece of the invention, the receiving device can receive a satellite signal transmitted from a GNSS satellite that is a position information satellite of a global satellite positioning system and an RNSS satellite that is a position information satellite of a regional satellite positioning system. Preferably, when the selected position information satellite includes an RNSS satellite, the satellite selection unit preferably sets the selected RNSS satellite as a priority for the position information satellite search order.

  According to the present invention, when the RNSS satellite is included, the RNSS satellite can be preferentially searched, so that the possibility that the RNSS satellite can be captured early is increased, and the RNSS satellite is not received or preferentially searched. Compared to the case where the position information satellite is not used, the position information satellite search process and the satellite signal reception process can be shortened.

  In the electronic timepiece according to the aspect of the invention, the receiving device includes a position information satellite that is a selection target in the satellite selection unit, and a position information satellite that is a search target without being selected in the satellite selection unit. It is preferable that the satellite signal to be transmitted can be received.

  According to the present invention, for example, when the position information satellite to be selected by the satellite selection unit is an RNSS satellite such as QZSS, and the position information satellite to be constantly searched is a GNSS satellite such as a GPS satellite. When there is no position information satellite to be selected by the satellite selection unit or when the selected position information satellite cannot be captured, the position information satellite to be constantly searched is searched and captured, and the satellite signal is acquired. Can be received. Therefore, satellite signals can be received even in areas where RNSS satellites cannot be received.

  In the electronic timepiece of the invention, it is preferable that the position information satellite to be selected by the satellite selection unit is a position information satellite of a specific regional satellite positioning system.

  According to the present invention, since the position information satellite to be selected by the satellite selection unit is a specific regional satellite positioning system, for example, QZSS, the position information satellite of the global satellite positioning system such as GPS is also selected. The number of position information satellites to be selected can be reduced as compared with the case of the target. Therefore, the operation information can be reduced, the storage capacity of the operation information storage unit for storing the operation information can be reduced, and the satellite can be selected efficiently.

  The present invention is a method for controlling an electronic timepiece, comprising: a receiving device that receives a satellite signal transmitted from a position information satellite; a time display device that displays time based on internal time information; and a control device. A step of instructing operation of the device, a step of selecting a position information satellite in operation based on operation information of the position information satellite when there is an instruction of operation of the reception device, and a control of the reception device. And searching for and acquiring the selected position information satellite and receiving a satellite signal, and correcting the internal time information based on the information of the satellite signal received by the receiving device. It is characterized by that.

  According to the present invention, since a position information satellite in operation is selected based on the operation information, and the selected position information satellite is searched and captured, the position information satellite that has not started operation is not searched. . For this reason, the satellite search time can be shortened without performing the acquisition process of the nonexistent satellite. Therefore, in the electronic timepiece, the time until the reception result is obtained can be shortened, and the power consumption can be reduced.

It is the schematic which shows the electronic timepiece which concerns on 1st Embodiment of this invention. It is a front view of the electronic timepiece in the first embodiment. It is sectional drawing of the electronic timepiece in 1st Embodiment. It is a control block diagram in a 1st embodiment. It is a data structure figure of the memory | storage device in 1st Embodiment. It is a flowchart which shows the time measurement reception process in 1st Embodiment. It is a data structure figure of the memory | storage device in 2nd Embodiment. It is a flowchart which shows the time measurement reception process in 2nd Embodiment. It is a flowchart which shows the time measurement reception process in 3rd Embodiment.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 is a schematic view showing an electronic timepiece 10 of the present embodiment.
The electronic timepiece 10 receives a satellite signal transmitted from at least one position information satellite among position information satellites orbiting the earth in a predetermined orbit to obtain time information, and preferably at least three, preferably Is configured to receive satellite signals transmitted from four position information satellites and calculate and acquire position information.

Here, the position information satellite includes a GNSS satellite which is a position information satellite of a global navigation satellite system (GNSS) and a position information satellite of a regional satellite positioning system (RNSS). There is a certain RNSS satellite.
Examples of the global satellite positioning system include GPS (United States), GLONASS (Russia), Galileo (European Community), and Beidou (China). In addition, regional satellite positioning systems include Quasi-Zenith Satellite System (QZSS: Japan), Indian Regional Navigational Satellite System (IRNSS), India, DORIS (Doppler Orbitography and Radio-positioning Integrated by Satellite), France. ), Beidou (China).
In this embodiment, GPS will be described as an example of GNSS, and a quasi-zenith satellite system will be described as an example of RNSS. Therefore, in the following embodiment, the GPS satellite 100 shown in FIG. 1 is an example of a GNSS satellite, and the quasi-zenith satellite 101 is an example of an RNSS satellite.

[Schematic configuration of electronic watch]
FIG. 2 is a front view of the electronic timepiece 10, and FIG. 3 is a schematic cross-sectional view of the electronic timepiece 10.
The electronic timepiece 10 is a wristwatch worn on a user's wrist, and includes an outer case 30, a cover glass 33, and a back cover 34 as shown in FIGS. The exterior case 30 is configured by fitting a bezel 32 made of ceramic to a cylindrical case 31 made of metal. An A button 51, a B button 52, and a crown 55 are provided on the side surface of the exterior case 30.

As shown in FIG. 3, the electronic timepiece 10 has an opening on the front surface side that is covered with a cover glass 33 through a bezel 32, and has an opening on the back surface side. Is closed by a back cover 34 made of metal.
Inside the outer case 30, the dial ring 40 attached to the inner periphery of the bezel 32, the light-transmitting dial plate 11, the pointer shaft 25 penetrating the dial plate 11, and the needle shaft 25 circulates around the needle shaft 25. Needles 21, 22, and 23, and a drive mechanism 140 are provided. The drive mechanism 140 drives the hands 21, 22, 23, 61, 71, 81, 82, 91 and the calendar wheel 16 shown in FIG.
The pointer shaft 25 is provided along a central axis that passes through the center of the exterior case 30 in plan view and extends in the front-back direction.

  The dial ring 40 is disposed along the outer periphery of the dial 11. The dial ring 40 includes a flat plate portion and an inclined portion disposed on the inner peripheral side of the flat plate portion. The dial ring 40 has a ring shape in plan view and a mortar shape in sectional view. A donut-shaped storage space is formed by the flat plate portion, the inclined portion, and the inner peripheral surface of the bezel 32 of the dial ring 40, and the ring-shaped antenna body 110 is stored in the storage space.

The dial 11 is a circular plate that displays the time inside the outer case 30 and is formed of a light-transmitting material such as plastic.
The pointers 21, 22, 23, 61, 71, 81, 82, 91 are disposed between the dial plate 11 and the cover glass 33 and inside the dial ring 40.
Between the dial plate 11 and the main plate 125, a solar panel 135 that performs photovoltaic power generation is provided. The solar panel 135 is a circular flat plate in which a plurality of solar cells (photovoltaic elements) that convert light energy into electric energy (electric power) are connected in series. The dial plate 11, the solar panel 135, and the base plate 125 are formed with holes through which the pointer shaft 25 and the pointer shafts (not shown) of the pointers 61, 71, 81, 82, 91 pass. In addition, the dial 11 and the solar panel 135 are formed with openings for the calendar small windows 15.

The drive mechanism 140 is attached to the ground plane 125 and is covered with the circuit board 120 from the back side. The drive mechanism 140 has a step motor and a wheel train, and the step motor drives each pointer by rotating the pointer shaft 25 and the like via the wheel train.
Specifically, the drive mechanism 140 includes first to sixth drive mechanisms. The first drive mechanism drives a pointer 22 (minute hand) and a pointer 23 (hour hand) indicating “minute” and “hour” at the first time (local time). Further, the hands 21, 61, 71, 81, 82, 91 shown in FIG. 2 are also driven by a similar drive mechanism (not shown). That is, the second driving mechanism drives the pointer 21 indicating “second” of the first time, the third driving mechanism drives the pointer 61 indicating the day of the week, and the fourth driving mechanism drives the pointer 71 indicating the mode and the like. The fifth drive mechanism drives the hands 81 (minutes) indicating “minute” and “hour” at the second time (home time), the hands 82 (hours), and the hands 91 indicating morning and afternoon at the second time. The sixth drive mechanism drives the calendar wheel 16 viewed from the calendar small window 15. Each of these first to sixth drive mechanisms has a step motor and a train wheel.

  The circuit board 120 includes a receiving device (GPS module) 121, a control device 300, and a storage device 200. The circuit board 120 and the antenna body 110 are connected using antenna connection pins 115. A circuit retainer 122 for covering these circuit components is provided on the back cover 34 side (back side) of the circuit board 120 provided with the receiving device 121, the control device 300, and the storage device 200. A secondary battery 130 such as a lithium ion battery is provided between the ground plate 125 and the back cover 34. The secondary battery 130 is charged with the power generated by the solar panel 135.

[Electronic watch display mechanism]
On the inner peripheral side of the dial ring 40 that surrounds the outer peripheral portion of the dial 11, a scale that divides the inner periphery into 60 divisions is shown as shown in FIG. 2. Using this scale, the hand 21 displays “second” of the first time at normal time, the hand 22 displays “minute” of the first time, and the hand 23 displays “hour” of the first time. Since the “second” of the first time is the same as the “second” of the second time described later, the user can grasp the “second” of the second time by checking the pointer 21.
The dial ring 40 has an alphabet “Y” at the 12-minute position and an alphabet “N” at the 18-minute position. The letters indicate reception (acquisition) results (Y: reception (acquisition) success, N: reception (acquisition) failure) of various information based on the satellite signal received from the GPS satellite 100. The pointer 21 indicates either “Y” or “N” and displays the reception result of the satellite signal. The reception result is displayed by pressing the A button 51 for less than 3 seconds.

  The pointer 61 is provided at a position in the 2 o'clock direction from the center of the dial 11. On the outer periphery of the rotation area of the pointer 61, the letters “S”, “M”, “T”, “W”, “T”, “F”, and “S” indicating the seventh day are written. The pointer 61 displays the day of the week by instructing one of “S” to “S”.

The pointer 71 is provided at a position in the 10 o'clock direction from the center of the dial 11. Hereinafter, the notation of the outer periphery of the rotation area of the pointer 71 will be described. The “n hour direction” (n is an arbitrary natural number) is the direction when the outer periphery of the rotation area is viewed from the pointer axis of the pointer 71. .
On the outer periphery of the range of rotation of the pointer 71 from the 6 o'clock direction to the 7 o'clock direction, an English letter “DST” and a symbol “•” are written. DST (daylight saving time) means daylight saving time. The pointer 71 indicates the setting of daylight saving time (DST: daylight saving time ON, ..: daylight saving time OFF) by indicating these letters and symbols.

  On the outer circumference of the range of rotation of the pointer 71 from the 8 o'clock direction to the 9 o'clock direction, a crescent sickle-shaped symbol 72 is formed along the circumference, with the base end in the 9 o'clock direction being thick and the tip in the 8 o'clock direction being thin. It is written. This symbol 72 is a power indicator of the secondary battery 130 (see FIG. 3), and the remaining battery level is displayed when the pointer 71 indicates a position corresponding to the remaining battery level. In addition, the pointer 71 indicates the remaining battery level by indicating the symbol 72 at normal times.

  An airplane-shaped symbol 73 is written on the outer periphery of the rotation area of the pointer 71 in the 10 o'clock direction. This symbol represents the airplane mode. When aircraft take off and landing, the reception of satellite signals is prohibited by the Aviation Law. The pointer 71 indicates that the in-flight mode is set and no reception is performed by designating the symbol 73.

  The number “1” and the symbol “4+” are written on the outer periphery of the rotation region of the pointer 71 from the 11 o'clock direction to the 12 o'clock direction. These numbers and symbols represent satellite signal reception modes. “1” receives GPS time information and the internal time is corrected (time measurement mode), “4+” receives GPS time information and orbit information, calculates position information that is the current position, This means that the time and time zone data described later are corrected (positioning mode).

The hands 81 and 82 are provided at a position in the 6 o'clock direction from the center of the dial 11. The hand 81 displays “minute” of the second time, and the hand 82 displays “hour” of the second time.
The pointer 91 is provided at a position in the 4 o'clock direction from the center of the dial 11 and displays the morning and afternoon of the second time.
The calendar small window 15 is provided in the opening part which opened the dial 11 in the rectangular shape, and the number printed on the calendar wheel 16 can be visually recognized from the opening part. This number represents the “day” of the date.

In the dial ring 40, time difference information 45 indicating a time difference from Coordinated Universal Time (UTC) is indicated by a numeral and a symbol other than a numeral along a scale on the inner peripheral side. The numerical time difference information 45 represents an integer time difference, and the symbol time difference information 45 represents a time difference other than an integer. The time difference between the first time displayed on the hands 21, 22 and 23 and UTC can be confirmed by the time difference information 45 indicated by the hand 21 by pressing the B button 52.
The bezel 32 provided around the dial ring 40 has city information 35 representing the representative city name of the time zone using the standard time corresponding to the time difference of the time difference information 45 written on the dial ring 40. Is also written in the time difference information 45. Here, the notation of the time difference information 45 and the city information 35 is referred to as a time zone display 46. In this embodiment, a time zone display 46 equal to the number of time zones used all over the world is shown.

[Internal structure of electronic watch]
FIG. 4 is a control block diagram of the electronic timepiece 10.
As shown in FIG. 4, the electronic timepiece 10 includes a control device 300 constituted by a CPU (Central Processing Unit), and a storage device (storage means) 200 constituted by a RAM (Random Access Memory) and a ROM (Read Only Memory). , Receiving device (GPS module) 121, timing device 150, input device 160, drive mechanism 140, and display device 141. Each of these devices transmits and receives data via a data bus.
The electronic timepiece 10 also includes a rechargeable secondary battery 130 (see FIG. 3) that serves as a power source. The secondary battery 130 is charged with electric power supplied from the solar panel 135 via the charging circuit 131. Furthermore, the electronic timepiece 10 may include a generated voltage detection circuit that detects the generated voltage of the solar panel 135.

[Input device]
The input device 160 includes a crown 55, an A button 51, and a B button 52 shown in FIG.
[Display device]
The display device 141 is a time display device of the present invention, and includes the dial plate 11, dial ring 40, bezel 32, hands 21, 22, 23, 61, 71, 81, 82, 91 shown in FIG. 2. The

[Receiver]
The receiving device 121 is connected to the antenna body 110, processes satellite signals received via the antenna body 110, and acquires GPS time information and position information. The antenna body 110 is a satellite transmitted from the GPS satellite 100 or the quasi-zenith satellite 101 (see FIG. 1) orbiting the earth over a predetermined orbit and passing through the cover glass 33 and the dial ring 40 shown in FIG. Receive signal radio waves.

  Although not shown, the receiving device 121 receives a satellite signal transmitted from the GPS satellite 100 or the quasi-zenith satellite 101 and converts it into a digital signal, and performs a correlation determination of the received signal. A BB unit (baseband unit) that demodulates the navigation message, and an information acquisition unit that acquires and outputs GPS time information and position information (positioning information) from the navigation message (satellite signal) demodulated by the BB unit; It has.

[Time measuring device]
The time measuring device 150 includes a crystal resonator driven by the electric power stored in the secondary battery 130, and updates time data using a reference signal based on an oscillation signal of the crystal resonator.

[Storage device]
As illustrated in FIG. 5, the storage device 200 includes a time data storage unit 210, a time zone data storage unit 220, and an operation information storage unit 250.
The time data storage unit 210 includes reception time data 211, leap second update data 212, internal time data 213, first display time data 214, second display time data 215, and first time zone data. 216 and second time zone data 217 are stored.
The reception time data 211 stores time information (GPS time) acquired from satellite signals. The reception time data 211 is normally updated every second by the timing device 150, and when the satellite signal is received, the acquired time information (GPS time) is stored.
The leap second update data 212 stores at least current leap second data. That is, in subframe 4 and page 18 of the satellite signal, “current leap second”, “leap second update week”, “leap second update date”, and “leap second after update” are included as data relating to leap seconds. Each data is included. Among these, in this embodiment, at least “current leap second” data is stored in the leap second update data 212.

  Internal time information is stored in the internal time data 213. This internal time information is updated by the GPS time stored in the reception time data 211 and the “current leap second” stored in the leap second update data 212. That is, the internal time data 213 stores UTC (Coordinated Universal Time). When the reception time data 211 is updated by the timing device 150, the internal time information is also updated.

The first display time data 214 stores time information obtained by adding the time zone data (time difference information) of the first time zone data 216 to the internal time information of the internal time data 213. The first time zone data 216 is set as time zone data obtained when the user manually selects or receives in the positioning mode. Here, the time information of the first display time data 214 corresponds to the first time displayed by the hands 21, 22, and 23.
The second display time data 215 stores time information obtained by adding the time zone data of the second time zone data 217 to the internal time information of the internal time data 213. The second time zone data 217 is set as time zone data obtained when the user manually selects. Here, the time information of the second display time data 215 corresponds to the second time displayed by the hands 81, 82, 91.

The time zone data storage unit 220 stores position information (latitude, longitude) and time zone data (time difference information) in association with each other. Therefore, when the position information is acquired in the positioning mode, the control device 300 can acquire time zone data based on the position information (latitude, longitude).
The time zone data storage unit 220 further stores a city name and time zone data in association with each other. Therefore, when the user selects a city name for which the local time is desired by operating the crown 55, the control device 300 searches the time zone data storage unit 220 for the city name set by the user and corresponds to the city name. Time zone data to be acquired is acquired and set in the first time zone data 216 or the second time zone data 217.

The operation information storage unit 250 stores operation information in which the relationship between the position information satellite in the position information satellite system and the operation start time is associated.
In this embodiment, as shown in Table 1, operation information of the quasi-zenith satellite system (QZSS) is stored.

As shown in Table 1, the operation information storage unit 250 stores the relationship between each satellite operated in the quasi-zenith satellite system and the operation start time. In Table 1, each satellite is indicated by a PRN number (Pseudo-Random Noise Code). In QZSS, PRN numbers 193 to 197 are quasi-zenith orbit satellites (QZO satellites), and PRN numbers 199 to 201 are geostationary orbit satellites (GEO satellites). Note that the PRN number 198 is a QZO satellite or a GEO satellite and is not yet determined.
Therefore, in the setting shown in Table 1, from January 2015 to December 2016, only one QZO satellite with a PRN number of 193 can be used. From January 2017 to December 2019, a total of four QZO satellites with PRN numbers 193, 194, and 195 and one GEO satellite with PRN numbers 199 are available. From January 2020 to December 2022, a total of five QZO satellites with PRN numbers of 193 to 196 and one GEO satellite with PRN numbers of 199 are available. From January 2023 to December 2025, seven QZO satellites with PRN numbers of 193 to 197 and two GEO satellites with PRN numbers of 199 and 200 can be used. Since January 2025, a total of 9 QZO satellites with PRN numbers of 193 to 197, 3 GEO satellites with PRN numbers of 199 to 201, and 9 satellites with PRN numbers of 198 (QZO or GEO satellites) A machine is available.

  Tables 1 to 9 set the search order. Therefore, in the setting shown in Table 1, the QZO satellite is preferentially searched, and the GEO satellite is searched after that.

[Control device]
The control device 300 includes a CPU that controls the electronic timepiece 10. As illustrated in FIG. 4, the control device 300 includes a reception instruction unit 310, a reception control unit 320, a satellite selection unit 330, a display control unit 350, and a time correction unit 360.

The reception instruction unit 310 includes an automatic reception instruction unit 311 and a manual reception instruction unit 315.
The automatic reception instruction unit 311 issues a reception instruction to the reception control unit 320 when the automatic reception condition of the satellite signal is satisfied. In this embodiment, when there is a reception instruction at the time of automatic reception, the reception control unit 320 performs reception processing in a time measurement mode in which at least one position information satellite is captured and a satellite signal is received.
As automatic reception conditions, when the internal time data 213 has reached a preset scheduled reception time (when the scheduled reception conditions are met) and when the generated voltage or generated current of the solar panel 135 exceeds a set value It is determined that there is a reception instruction in (when the outdoor determination condition is met). It should be noted that the number of times that it is determined that the automatic reception condition is satisfied in the power generation state of the solar panel 135 may be limited to once a day.

  The manual reception instruction unit 315 determines that there is a reception instruction when the user performs the forced reception operation by pressing the A button 51, and issues a reception instruction to the reception control unit 320. At this time, the manual reception instruction unit 315 switches the time measurement mode and the time measurement mode according to the time during which the A button 51 is pressed, and issues a reception instruction to the reception control unit 320. For example, when the A button 51 is pressed for 3 seconds or more and less than 6 seconds, the manual reception instruction unit 315 instructs the reception control unit 320 to perform reception processing in the timekeeping mode, and the A button 51 is pressed for 6 seconds or more. In this case, the reception control unit 320 is instructed to perform reception processing in the positioning mode.

  Upon receiving a reception instruction from the reception instruction unit 310, the reception control unit 320 selects a position information satellite to be searched by the satellite selection unit 330 and controls the reception device 121 to receive a satellite signal such as a search for the position information satellite. Perform control processing.

The satellite selection unit 330 confirms the current date with reference to the internal time data 213 according to the reception instruction from the reception instruction unit 310, and compares it with the operation start time of the operation information stored in the operation information storage unit 250. To do. Thereby, the satellite selection unit 330 specifies the latest operation start time corresponding to the current date, and sets the quasi-zenith satellite 101 to be searched and the search order at that time.
For example, if the current date is January 3, 2016, the latest applicable operation start time is in the range from January 2015 to December 2016, so the satellite selection unit 330 is set as a search target. A QZO satellite with a PRN number of 193 is selected.
If the current date is April 3, 2018, the latest applicable operation start time is in the range from January 2017 to December 2019. Therefore, the satellite selection unit 330 is selected as a search target. QZO satellites with PRN numbers 193 to 195 and 199 GEO satellites are selected. At this time, the search order is set in the order of PRN numbers 193, 194, 195, and 199. That is, the satellite selection unit 330 sets the search so that the QZO satellite is preferentially searched and then the GEO satellite having the PRN number of 199 is searched.
If the current date is after January 2025, select the QZO satellites with PRN numbers of 193 to 197, 198 satellites (QZO satellite or GEO satellite), and 199 to 201 GEO satellites as search targets. To do. At this time, the search order is set such that the PRN numbers are set in the order of 193 to 201, the QZO satellite is first searched first, and then the GEO satellite is searched.
Further, the satellite selection unit 330 sets the GPS satellite 100 to be searched after the selected quasi-zenith satellite 101. That is, the satellite selection unit 330 sets the search order so that the selected position information satellite is preferentially searched, and the GPS satellites 100 that are not selected are searched thereafter.

The reception control unit 320 controls the reception device 121 to search for a position information satellite in which the search target and search order are set by the satellite selection unit 330, and receives a signal from the captured satellite. At this time, if the reception instruction is the time measurement mode, that is, the reception instruction by the automatic reception instruction unit 311 and the reception in the time measurement mode by the manual reception instruction unit 315 when the A button 51 is pressed for 3 seconds or more and less than 6 seconds. When instructed, the receiver 121 captures at least one quasi-zenith satellite 101, receives a satellite signal transmitted from the quasi-zenith satellite 101, and acquires time information.
In addition, the reception control unit 320 searches the GPS satellite 100 when the quasi-zenith satellite 101 cannot be captured. For example, before January 2017, only one quasi-zenith satellite 101 was operated. The quasi-zenith satellite 101 is positioned over Japan for about 8 hours, and the quasi-zenith satellite 101 cannot be captured in other time zones. For this reason, the reception control unit 320 searches the GPS satellite 100 when the quasi-zenith satellite 101 cannot be captured.
When the reception control unit 320 captures the quasi-zenith satellite 101 or the GPS satellite 100 and successfully receives the satellite signal, the time correction unit 360 corrects the reception time data 211 with the acquired time information.

Further, when the reception instruction is the positioning mode, that is, when the A button 51 is pressed for 6 seconds or more and the reception instruction in the positioning mode is instructed by the manual reception instruction unit 315, the receiving device 121 receives the four position information satellites. Is received, and a satellite signal transmitted from the position information satellite is received to acquire time information.
At this time, the reception control unit 320 preferentially searches for the quasi-zenith satellite 101 selected by the satellite selection unit 330, and then searches for the GPS satellite 100. In addition, if it is after January 2023 when the quasi-zenith satellite 101 becomes a system of seven, positioning can be performed only by the quasi-zenith satellite 101, but before that, positioning cannot be performed only by the quasi-zenith satellite 101.
Accordingly, when the number of quasi-zenith satellites 101 selected from Table 1 by the satellite selection unit 330 is less than seven, the reception control unit 320 searches for the quasi-zenith satellite 101 with priority, but the GPS satellite 100 is also searched. There is a need to.
On the other hand, when there are seven or more quasi-zenith satellites 101 selected from Table 1 by the satellite selection unit 330, the quasi-zenith satellite 101 is searched first, and four or more quasi-zenith satellites 101 cannot be captured. In addition, the GPS satellite 100 may be searched.

The reception control unit 320 performs reception processing in the positioning mode, captures the four quasi-zenith satellites 101 or GPS satellites 100, receives satellite signals, acquires time information, and further calculates position information. get. If the reception control unit 320 succeeds in acquiring the position information, the reception control unit 320 acquires time zone data (time difference information) from the time zone data storage unit 220 based on the acquired position information (latitude, longitude), and the first time The zone data 216 is stored.
For example, since Japan Standard Time (JST) is a time (UTC + 9) that is 9 hours ahead of UTC, when the position information acquired in the positioning mode is Japan, the reception control unit 320 stores the time zone data. The time difference information (+9 hours) in Japan standard time is read from the unit 220 and stored in the first time zone data 216. Therefore, the first display time data 214 is a time obtained by adding the first time zone data 216 to the internal time data 213 which is UTC.

The display control unit 350 controls the display of the display device 141 by controlling the operation of the drive mechanism 140.
The time correction unit 360 corrects the reception time data 211 based on the time information acquired by receiving the satellite signal.
The details of the function of the control device 300 will be described in the processing of the control device 300 below.

Next, the reception processing in the timekeeping mode of the electronic timepiece 10 will be described with reference to the flowchart of FIG.
The reception instruction unit 310 of the control device 300 detects that the automatic reception condition is met, such as when the scheduled reception time is reached or the outdoor determination condition is met, and the reception in the timekeeping mode by the A button 51. When it is detected that an operation has been performed, the reception control unit 320 is instructed to perform reception processing in the timekeeping mode (S1).

When receiving the reception instruction, the reception control unit 320 reads the internal time data 213, that is, the current date from the storage device 200 (S2).
The satellite selection unit 330 reads the currently operating quasi-zenith satellite 101 from the operation information storage unit 250 based on the read current date (S3). The read quasi-zenith satellite 101 is a position information satellite (search satellite) to be searched with priority over the GPS satellite 100.
Next, the reception control unit 320 operates the reception device 121, performs priority satellite search processing for preferentially searching for the quasi-zenith satellite 101 selected by the satellite selection unit 330, and starts reception processing in the timekeeping mode. (S4).
When reception processing in the timekeeping mode is started, the receiving apparatus 121 captures at least one quasi-zenith satellite 101 among the selected quasi-zenith satellites 101, and transmits a satellite transmitted from the quasi-zenith satellite 101. Receive a signal to obtain time information. For example, when searching at the time when four aircrafts with PRN numbers of 193 to 195 and 199 are in operation, the reception control unit 320 searches in order from the satellites of 193 and receives satellite signals from the captured position information satellites. . Since the reception processing is performed in the timekeeping mode, a satellite signal is received when a position information satellite is captured even by one aircraft. For example, when a plurality of quasi-zenith satellites 101 are captured, if a plurality of reception channels of the receiving device 121 are set, the received satellite signals from the respective quasi-zenith satellites 101 are received by the respective reception channels. To do.
In addition, during the execution of the reception process, the display control unit 350 indicates that the reception process is being executed in the timekeeping mode by instructing the pointer 21 to indicate the 0-second position and instructing the pointer 71 to “1”. Let

Next, the reception control unit 320 determines whether the quasi-zenith satellite 101 has been captured and the satellite signal has been successfully received, that is, whether the time information has been successfully acquired (S5).
When the reception control unit 320 determines that the reception is successful (YES in S5), the time correction unit 360 stores the acquired time information in the reception time data 211. Thereby, the internal time data (internal clock information) 213 is corrected, and the first display time data 214 and the second display time data 215 are also corrected (S6).

Next, the display control unit 350 moves the hands based on the corrected first display time data 214 and second display time data 215 to correct the display time (S7).
Thus, the time measurement reception process ends. When the timekeeping reception process ends, the control device 300 returns to the normal time display mode for displaying the normal time.

On the other hand, if the reception control unit 320 determines that the reception has failed in S5 (NO in S5), it performs another satellite search, that is, a search process for the GPS satellite 100 (S10).
Next, the reception control unit 320 determines whether the quasi-zenith satellite 101 has been captured and the satellite signal has been successfully received, that is, whether the time information has been successfully acquired (S11).
When the reception control unit 320 determines that the reception is successful in S11 (YES in S11), the time correction unit 360 stores the acquired time information in the reception time data 211, as in the case where YES is determined in S5. Then, the internal time data 213, the first display time data 214, and the second display time data 215 are corrected (S6). Further, the display control unit 350 corrects the display time by moving the pointer based on the corrected first display time data 214 and second display time data 215 (S7).
Thus, the time measurement reception process ends. When the timekeeping reception process ends, the control device 300 returns to the normal time display mode for displaying the normal time.

If the reception control unit 320 determines that the reception has failed in S11 (NO in S11), the reception control unit 320 determines whether a timeout has occurred (S12). That is, the reception control unit 320 determines that a timeout has occurred when the elapsed time from the start of the priority satellite search process of S4 reaches a preset timeout time (for example, 2 minutes). If it is determined in S12 that the timeout has not occurred (NO in S12), the reception control unit 320 returns to the priority satellite search process in S4 and continues the process.
On the other hand, when it is determined that the time-out has occurred in S12 (YES in S12), the reception control unit 320 ends the time reception process, and the control device 300 displays the normal time when the time reception process ends. Return to time display mode.

[Effects of First Embodiment]
According to the electronic timepiece 10 of the present embodiment, when there is a reception instruction, based on the internal time, a position information satellite in operation is selected from the operation information storage unit 250, and the selected position information satellite is searched. Can be targeted. For example, if the QZSS quasi-zenith satellite is the search target, if the internal time is October 1, 2015, only the quasi-zenith satellite (MICHIBIKI) with the PRN number 193 is operated, so the reception control unit 320 selects only this quasi-zenith satellite as a search target, and does not search for another quasi-zenith satellite that is not in operation at that time. For this reason, the satellite search time can be shortened without performing the acquisition process of the nonexistent satellite. Therefore, in the electronic timepiece, the time until the reception result is obtained can be shortened and the power consumption can be reduced.

  Since the operation information storage unit 250 that stores the operation information is provided, the correspondence information between the position information satellite and the operation start time can be easily updated. Therefore, it is possible to update the operation information to the latest operation information at the time of shipment of the electronic timepiece 10 and to easily update the operation information during maintenance of the electronic timepiece 10 even after the shipment. Therefore, even when the maintenance plan is changed halfway, it is possible to easily update to the latest operation information and perform efficient reception control.

  Furthermore, since only the operation information of the quasi-zenith satellite system is stored in the operation information storage unit 250 and no GPS operation information is stored, the number of position information satellites to be selected can be reduced. Therefore, the operation information can be reduced, the storage capacity of the operation information storage unit 250 for storing the operation information can be reduced, and the satellite can be selected efficiently.

  When selecting the quasi-zenith satellite 101 from the operation information storage unit 250, the satellite selection unit 330 selects based on the internal time data 213 stored in the time data storage unit 210, and therefore determines the operation start time. Therefore, it is not necessary to use special data, and the present invention can be easily applied to the electronic timepiece 10 conventionally used.

The satellite selection unit 330 not only selects the quasi-zenith satellite 101 to be searched, but also sets the search order, so that the selected quasi-zenith satellite 101 can be searched efficiently. In particular, since the search order is set such that the quasi-zenith orbit satellite is searched first and then the geostationary orbit satellite is searched, a high-intensity satellite signal located in the zenith direction can be received efficiently.
Furthermore, since the satellite selection unit 330 searches the QZSS (RNSS) including the selected quasi-zenith satellite 101 in preference to the GPS (GNSS), the satellite selection unit 330 performs efficient reception in an area where QZSS can be received. be able to.

  Furthermore, when the reception control unit 320 cannot receive a signal from the quasi-zenith satellite 101, it searches the GPS satellite 100 as another satellite and captures the satellite signal. Can be received to correct the display time.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS. The electronic timepiece 10 of the second embodiment is different from the first embodiment in the configuration of the storage device 200A and part of the reception process. For this reason, only the points different from the first embodiment will be described.
That is, as illustrated in FIG. 7, the storage device 200 </ b> A of the second embodiment includes an acquisition information storage unit 260. The acquisition information storage unit 260 stores time information received in the past reception process. In the acquisition information storage unit 260 of the second embodiment, since the received time information is updated and stored, the previous reception time information is stored. Therefore, in the second embodiment, the acquisition information storage unit 260 is a reception time information storage unit in which the previous reception time information is stored.

  And in 2nd Embodiment, as shown in FIG. 8, if there exists a reception instruction | indication (S1), the reception control part 320 will read last reception time information from the acquisition information storage part 260 (S21). Then, the satellite selection unit 330 reads out the search target satellite from the operation information storage unit 250 based on the previous reception time information (S3). Thereafter, the same processes S4 to S12 as in the first embodiment are executed. Moreover, in 2nd Embodiment, the reception control part 320 memorize | stores reception time information in the acquisition information storage part 260, when reception is successful (it is YES at S5 or YES at S11) (S8). Therefore, the previous reception time information stored in the acquired information storage unit 260 is read in S21 when there is a next reception instruction.

[Effects of Second Embodiment]
According to such 2nd Embodiment, there can exist an effect similar to the said 1st Embodiment.
In addition, since the satellite selection unit 330 reads the search satellite from the operation information storage unit 250 and selects the quasi-zenith satellite 101 based on the previous reception time information instead of the internal time information, the internal time data 213 is temporarily large. Even in the case of misalignment, the position information satellite in operation can be correctly selected.
Further, if the acquisition information storage unit 260 that stores the previous reception time information is configured by a non-volatile memory, even if the electronic timepiece 10 is reset and the internal time information is initialized, the acquisition information storage unit 260 is appropriately based on the previous reception time information. Position information satellites can be selected, and the position information satellite in operation can be searched reliably.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIG. Note that the electronic timepiece 10 of the third embodiment includes the acquisition information storage unit 260 in the storage device 200 as in the second embodiment. The acquired information storage unit 260 stores time information received within a predetermined period.
As shown in FIG. 9, the electronic timepiece of the third embodiment performs a process (S31) of reading time information received within a predetermined period instead of the process of reading the previous reception time information (S21) of the second embodiment. The point to do is different.

Here, the predetermined period is appropriately set, and is, for example, one week or one month. The acquired information storage unit 260 stores all the time information received during the predetermined period. Therefore, when there are a plurality of reception time information, the reception control unit 320 reads out the time information (S31). Then, the satellite selecting unit 330 selects a position information satellite from the operation information using the reception time information within a predetermined period (S3). For example, in the case of QZSS, as shown in Table 1, if the year and month can be grasped, the quasi-zenith satellite 101 in operation can be selected. Accordingly, when there are a plurality of time information received in a predetermined period, the satellite selection unit 330 estimates the current year and month from the time information, and selects the quasi-zenith satellite 101 in operation from that year and month. do it.
Thereafter, the same processing (S4 to S12) as in the second embodiment is executed. In S8, the reception time information is stored in the acquisition information storage unit 260. At this time, instead of updating the data as in the second embodiment, all reception time information within a predetermined period may be stored.

[Effects of Third Embodiment]
According to such 3rd Embodiment, there can exist an effect similar to the said 2nd Embodiment.
According to the third embodiment, since the quasi-zenith satellite 101 to be searched can be selected based on time information received within a predetermined period, the search can be performed more accurately than in the second embodiment in which selection is made only from the previous reception time information. The target location information satellite can be selected. For example, when selecting only from the previous reception time information, there is a possibility that the quasi-zenith satellite 101 cannot be selected correctly if the previous reception time information is incorrect due to the influence of noise or the like. On the other hand, if reception time information within a predetermined period is used as in the present embodiment, determination can be made using a plurality of time information, and a position information satellite in operation can be correctly selected and searched.

[Other Embodiments]
The present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
For example, the operation information is not limited to the operation start time of the quasi-zenith satellite as in the above embodiment. The operation information preferably includes at least one information of operation start time, operation stop time, and operation abolition time of various position information satellites. The operation stop time is information indicating a time (period) during which a specific position information satellite cannot be temporarily used due to maintenance or the like. The operation abolition time is information indicating a time when a specific location information satellite is abolished due to a design life or the like and cannot be used. An example of operation information in the GPS satellite 100 is shown in Table 2.

Table 2 shows that the GPS satellite 100 with PRN number 10 was abolished at 7:00 on July 17, 2015, and the GPS satellite with PRN number 17 was between 1:00 and 7:00 on July 29, 2015. Operation information when the operation of the GPS satellite 100 with the PRN number 8 is started at 0:00 on October 31, 2015 when the operation is stopped by 100 is maintenance. That is, Table 2 includes operation information of the operation termination time of the PRN number 10 satellite, the operation stop time of the PRN number 17 satellite, and the operation start time of the PRN number 8 satellite. .
Specifically, after 0:00 on January 1, 2015, among the PRN numbers 1 to 32, the GPS satellite 100 having the PRN number 8 has not been operated. At 7:00 on July 17, 2015, the GPS satellite 100 with the PRN number 10 will be abolished. The operation of the GPS satellite 100 with the PRN number 17 is stopped at 1:00 on July 29, 2015, and the operation of the GPS satellite 100 with the PRN number 17 is resumed at 7:00 on July 29. At 00:00 on October 31, 2015, the operation of the GPS satellite 100 with the PRN number 8 is started.
As described above, by using the operation information in which the operation time is associated with the position information satellite operated at that time, only the GPS satellite 100 in operation can be selected as a search target. In Table 2, the search order is set in the order of PRN numbers 1 to 32. However, the search order can be changed by changing the order of the PRN numbers.

In each of the above embodiments, the operation information storage unit 250 is stored in the storage device 200. However, a process for selecting a position information satellite in operation may be incorporated in the reception control program of the reception device 121. However, if the operation information is stored in the operation information storage unit 250, the operation information can be easily updated.
In the embodiment, the operation information is stored in advance in the operation information storage unit 250. However, when the satellite signal includes the operation information, the position information satellite in operation by receiving the satellite signal. And the operation information in the operation information storage unit 250 may be updated by acquiring the information on the operation start schedule and the like. For example, in the case of QZSS, in the satellite signal transmitted from the quasi-zenith satellite currently in operation in QZSS, the PRN number of the quasi-zenith satellite that is currently in operation, the PRN number of the quasi-zenith satellite to be started next, and the start What is necessary is just to comprise so that the operation information memorize | stored in the operation information memory | storage part 250 can be updated by including the information of time and receiving these information.

  As shown in Table 1, the satellite selection unit 330 of the embodiment has set the search order of the selected position information satellites, but may select only the position information satellites to be searched. In this case, the search order may be set by the reception control unit 320 based on, for example, a past reception history, or may be searched in a fixed order.

  Although the time measurement reception process has been described in the embodiment, the same process may be performed during the positioning reception process. That is, the reception instruction unit 310 searches for the quasi-zenith satellite 101 selected by the satellite selection unit 330, further searches for GPS satellites, and if four satellites can be captured, receives those satellite signals and performs positioning calculation processing. Just do it.

In the embodiment, the quasi-zenith satellite selected by the satellite selection unit 330 is searched in preference to the GPS satellite. However, the location information satellite selected by the satellite selection unit 330 is a GPS satellite that is always a search target. It may be searched after the position information satellite.
Also, which satellite system is to be preferentially searched may be selected between the positioning reception process and the time measurement reception process. For example, during time measurement reception processing that can be processed with only one satellite signal, the quasi-zenith satellite 101 is preferentially searched, and during positioning reception processing that requires reception of four satellite signals, the GPS satellite 100 is prioritized. You may search.

In each of the embodiments described above, the electronic timepiece 10 includes the display device 141 including the dial plate 11 and hands, but the present invention is not limited to this. The electronic timepiece may include a time display device including a liquid crystal panel.
In this case, the electronic timepiece has only to have a time display function, and the time display device does not have to be a display device dedicated to time display. Examples of such an electronic timepiece include a pulse meter that is mounted on the user's arm and measures a pulse, and a GPS logger that is mounted on the user's arm and measures and accumulates the current position when the user is running. A list type device can be exemplified.

In the embodiment, the GPS and the quasi-zenith satellite system have been described as examples of the position information satellite system, but the present invention is not limited to this. For example, the position information satellite system may be another global public navigation satellite system (GNSS) such as Galileo (EU), GLONASS (Russia), Beidou (China), or a local satellite such as IRNSS (India). A positioning system (RNSS), a satellite-based augmentation system (SBAS), or the like may be used. At this time, the operation information storage unit 250 may store at least the operation information of the position information satellite system whose future operation plan is known.
When a plurality of RNSSs are configured to be received, the currently set time zone is read, the RNSS used in the time zone is set, and the operation information when the RNSS is set. The position information satellite to be specifically searched may be selected based on the above. In this case, it is possible to select an optimal satellite system in each time zone without selecting a useless satellite.

  DESCRIPTION OF SYMBOLS 10 ... Electronic clock, 51 ... A button, 52 ... B button, 55 ... Crown, 100 ... GPS satellite, 101 ... Quasi-zenith satellite, 110 ... Antenna body, 120 ... Circuit board, 121 ... Receiver, 130 ... Secondary battery , 135 ... solar panel, 140 ... drive mechanism, 141 ... display device, 150 ... timing device, 160 ... input device, 200, 200A ... storage device, 210 ... time data storage unit, 211 ... reception time data, 212 ... leap second Update data, 213, internal time data, 214, first display time data, 215, second display time data, 216, first time zone data, 217, second time zone data, 220, time zone data storage unit , 250 ... operation information storage unit, 260 ... acquisition information storage unit, 300 ... control device, 310 ... reception instruction unit, 311 ... automatic reception instruction unit 315 ... manual reception instruction unit, 320 ... reception control unit, 330 ... satellite selecting unit, 350 ... display controller, 360 ... time correction unit.

Claims (11)

A receiving device for receiving a satellite signal transmitted from a position information satellite;
A time display device for displaying the time based on the internal time information;
A control device,
The controller is
A reception instructing unit for instructing the operation of the receiving device;
A satellite selection unit that selects a location information satellite in operation based on operation information of the location information satellite when instructed by the reception instruction unit;
A reception control unit for controlling the receiving device, searching for and capturing the position information satellite selected by the satellite selection unit, and receiving a satellite signal;
A time correction unit for correcting the internal time information based on the information of the satellite signal received by the receiving device;
An electronic timepiece characterized by comprising: The electronic timepiece according to claim 1,
The operation information includes at least one information of an operation start time, an operation stop time, and an operation discontinuation time of the position information satellite. The electronic timepiece according to claim 1 or 2,
An operation information storage unit storing the operation information;
The electronic timepiece is characterized in that the satellite selection unit selects the position information satellite based on the operation information stored in the operation information storage unit when there is an instruction from the reception instruction unit. The electronic timepiece according to any one of claims 1 to 3,
The electronic timepiece, wherein the satellite selection unit selects the position information satellite from the operation information based on the internal time information when an instruction is given by the reception instruction unit. The electronic timepiece according to any one of claims 1 to 3,
A reception time information storage unit for storing the previous reception time information acquired in the previous reception process;
The electronic timepiece, wherein the satellite selection unit selects the position information satellite from the operation information based on the previous reception time information when there is an instruction from the reception instruction unit. The electronic timepiece according to any one of claims 1 to 3,
An acquisition information storage unit for storing reception time information received within a predetermined period;
The satellite selection unit selects the position information satellite from the operation information based on the reception time information stored in the acquired information storage unit when an instruction is given by the reception instruction unit. Electronic watch. The electronic timepiece according to any one of claims 1 to 6,
The electronic timepiece, wherein the satellite selection unit also sets a search order of the selected position information satellites. The electronic timepiece according to any one of claims 1 to 7,
The receiving device is configured to receive a satellite signal transmitted from a GNSS satellite that is a position information satellite of a global satellite positioning system and an RNSS satellite that is a position information satellite of a regional satellite positioning system;
The electronic timepiece is configured such that, when the selected position information satellite includes an RNSS satellite, the satellite selection unit sets the selected RNSS satellite to be prioritized as a position information satellite search order. The electronic timepiece according to any one of claims 1 to 8,
The receiving device receives a satellite signal transmitted from a position information satellite to be selected by the satellite selection unit and a position information satellite to be constantly searched without being selected by the satellite selection unit. An electronic timepiece characterized by being configured. The electronic timepiece according to claim 9,
The electronic timepiece characterized in that the position information satellite to be selected by the satellite selection unit is a position information satellite of a specific regional satellite positioning system. A receiving device for receiving a satellite signal transmitted from a position information satellite;
A time display device for displaying the time based on the internal time information;
A control method of an electronic timepiece having a control device,
Instructing the operation of the receiving device;
Selecting a position information satellite in operation based on operation information of the position information satellite when there is an instruction to operate the receiving device;
Controlling the receiving device to search for and acquire the selected position information satellite and receiving a satellite signal;
Correcting the internal time information based on the satellite signal information received by the receiving device;
A method for controlling an electronic timepiece, comprising:

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