JP6582620B2 - Electronic clock and local time position setting method - Google Patents

Description

  The present invention relates to an electronic timepiece capable of displaying the world time and a local time position setting method.

  2. Description of the Related Art Conventionally, there is an electronic timepiece having a world clock function for performing display at the same time or by switching a plurality of local times or UTC times. It is possible to display the local time of your residence and the local time of your travel destination or business partner, such as a traveler who travels around the world for business or tourism, or a person who makes transactions or meetings with other parts of the world. By doing this, you can get the local time you need smoothly.

  In an electronic timepiece having such a world clock function, conventionally, position information is acquired by receiving radio waves from positioning satellites, and according to the acquired position information, the time zone of the current position and the daylight saving time implementation area are obtained. There is a technology that automatically changes the local time display. Such an automatic change can be set as to whether or not it is possible by a user operation.

  In addition, electronic timepieces include radio timepieces that maintain the accuracy of counting date and time by acquiring time and date information by receiving radio waves from the outside periodically or under predetermined conditions. Japanese Patent Application Laid-Open No. 2004-260260 discloses a technique for maintaining more stable accuracy by using a plurality of types of radio waves such as standard radio waves in which date and time information is transmitted in a long wavelength band and radio waves from positioning satellites. Among these, the standard radio wave has a reception area. Therefore, there is a technique for switching the standard radio wave to be received according to the position information when the position information is acquired as described above.

JP 2002-71854 A

  However, among users who use such a world clock function, there are users who are particular about specific date and time information such as UTC date and time, not the local time of the current position. However, there is a problem that the local time setting is not flexible if the current position is not simply reflected in the world clock function as in the prior art.

  An object of the present invention is to provide an electronic timepiece and a local time position setting method capable of performing local time setting more flexibly while respecting settings related to specific date and time information.

In order to achieve the above object, the present invention provides:
A time counting means for counting the current date and time;
A local time setting means for setting one point of the world as a main setting for calculating local time, and setting a number of points in the world as a world clock setting within a predetermined number,
Local time calculation means for converting the time and date counted by the time measuring means, respectively, to local time of the world point set as the main setting and the world clock setting by the local time setting means;
Position information acquisition means for acquiring the current position ;
With
The local time setting means is:
When new position information is acquired by the position information acquisition means, if a specific point predetermined as a main setting is selected, the position acquired by the position information acquisition means is set to the world clock setting. Add or replace as one, and when the specific point is not selected as the main setting, determine the position acquired by the position information acquisition means as the main setting ,
The position information acquisition means stops acquisition of the current position when the specific point is set in both the main setting and the world clock setting.
This is an electronic timepiece.

  According to the present invention, there is an effect that the local time setting can be performed more flexibly while respecting the setting related to the specific date and time information.

It is a block diagram which shows the function structure of the electronic timepiece of embodiment of this invention. It is a figure which shows the example of the setting content of the home clock and world clock which are memorize | stored in RAM. It is a flowchart which shows the control procedure of a local time information acquisition process. It is a flowchart which shows the control procedure of a home clock manual setting process. It is a flowchart which shows the control procedure of a world clock manual setting process.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a functional configuration of the electronic timepiece 1 of the present embodiment.
The electronic timepiece 1 is a portable electronic timepiece having a world clock function, for example, an electronic wristwatch.
The electronic timepiece 1 includes a CPU (Central Processing Unit) 41 (local time setting means, local time calculation means, position acquisition control means, date and time acquisition means, display control means), ROM (Read Only Memory) 42, RAM (Random Access Memory) 43, a plurality of hands 44, a stepping motor 45, a drive circuit 46, an operation unit 47 as an operation receiving means, an oscillation circuit 48, a frequency dividing circuit 49, and a time measuring circuit 50 as a time measuring means. A long wave receiving unit 51 and an antenna A1, a satellite radio wave reception processing unit 52 and an antenna A2, a UART 53 (Universal Asynchronous Receiver / Transmitter), a power supply unit 54, and the like.

  The CPU 41 performs various arithmetic processes and controls the overall operation of the electronic timepiece 1. Further, the CPU 41 sends a signal to the timing circuit 50 based on the date / time data acquired from the satellite radio wave reception processing unit 52 or the date / time data decoded based on the signal input from the long wave receiving unit 51. The date and time data held is corrected, and the date and time at the set home position (home clock; HT) and the date and time at the world clock position (world clock; WT) are counted.

  The ROM 42 stores various programs and initial setting data for the electronic timepiece 1 to perform various operations. The programs stored in the ROM 42 include home city and world city date and time counting, display control, standard wave reception timing and reception target station control by the long wave reception unit 51, and reception target by the satellite radio wave reception processing unit 52. And a program 421 for controlling various control operations such as reception timing control. The initial setting data includes the world city that can be set and selected as the home city and the world clock city by the user with the electronic clock 1 of the present embodiment, the time zone to which the city belongs, and daylight saving time (DST). The city setting information 422 in which rules and settings related to the standard radio wave reception target station are stored in a list, and the reception frequencies and transmission formats of all standard radio wave transmission stations (long wavelength radio wave transmission stations) that can be received by the electronic timepiece 1 A standard radio wave list 423 in which such information is stored as a list is included.

  The RAM 43 provides a working memory space to the CPU 41 and stores various temporary data and setting data that can be overwritten. The RAM 43 includes an HT / WT setting storage unit 431 and a standard radio wave reception setting 432.

  The HT / WT setting storage unit 431 sets the home city position, city, time zone, and daylight saving time rules as the setting related to the home position (main setting), and the setting related to the world clock position (world clock setting). The set position, city, time zone, and daylight saving time implementation rule of the world city are stored. With reference to these pieces of information, the current date and time counted by the timing circuit 50 is converted to local time in the home city and the world clock city, and used and displayed.

  The standard radio wave reception setting 432 stores the setting of a reception target station when the long wave reception unit 51 receives standard radio waves from a standard radio wave transmission station that transmits date and time information in a long wavelength band. The setting stored in the standard radio wave reception setting 432 is specific information for specifying the reception target station selected and set by the city setting information 422 or the local time setting storage unit 521. By referring to the standard radio wave list 423 based on the specific information, reception frequency, format information for decoding, and the like can be acquired.

Here, the pointer 44 is a pointer used for time display including an hour hand, a minute hand, and a second hand, and is rotatably provided on the dial. The stepping motor 45 is for rotating these pointers 44 via a gear train mechanism that is a gear train. A stepping motor 45 is rotated at a predetermined angle according to the input of a drive voltage pulse from the drive circuit 46, for example, 180 degrees. The rotor rotates. The drive circuit 46 outputs a drive voltage pulse having a predetermined voltage and pulse width to the stepping motor 45 based on a control signal from the CPU 41 to drive the stepping motor 45. Here, for example, a guideline for displaying the date and time (local time) of the home city (home position) and a guideline for displaying the date and time (local time) of the world clock city (world clock position) are provided separately. Each of them can be rotated by a corresponding stepping motor 45.
The pointer 44, the stepping motor 45, and the drive circuit 46 constitute display means.

  The operation unit 47 includes a plurality of keys and buttons. When these keys and buttons are operated, the operation content is converted into an electric signal and output to the CPU 41 as an input signal. The operation unit 47 may include a crown or a touch sensor.

  The oscillation circuit 48 generates and outputs an oscillation signal having a predetermined frequency, for example, 32 kHz. The oscillation circuit 48 is not particularly limited, and includes, for example, a crystal oscillator.

  The frequency dividing circuit 49 divides the oscillation signal generated by the oscillation circuit 48 to generate and output a necessary frequency signal. The frequency dividing circuit 49 can output signals having different frequencies by appropriately switching the frequency dividing ratio according to a control signal from the CPU 41.

  The timer circuit 50 counts the predetermined frequency signal input from the frequency divider circuit 49, and counts the current date and time by adding to the initial set date and time. The date and time to be counted are not particularly limited, but are, for example, a UTC date and time or a count value that can be converted into the UTC date and time by the CPU 41. The date and time counted by the timer circuit 50 is a signal from the CPU 41 and is rewritten and corrected based on date and time data acquired from radio waves received from positioning satellites or standard radio waves.

The long wave receiver 51 demodulates the time code signal from the standard radio wave received using the antenna A1 that receives radio waves in the long wavelength band. The standard radio wave is an amplitude-modulated wave (AM wave) in a long wavelength band, and is not particularly limited in the long wave receiving unit 51 of the present embodiment, but for example, demodulation is performed by a superheterodyne method. The long wave receiving unit 51 is configured to be supplied with power from the power supply unit 54 only when receiving a standard radio wave according to a control signal from the CPU 41. The tuning frequency by the antenna A1 can be changed by adjusting the setting of a tuning circuit (not shown) in the long wave receiving unit 51.
The long wave receiving unit 51 and the antenna A1 constitute a long wave receiving unit.

The satellite radio wave reception processing unit 52 receives a transmission radio wave from a positioning satellite, for example, a GPS satellite related to the GPS (Global Positioning System) in the United States, using the antenna A2 that can receive a transmission radio wave of L1 band (1.57542 GHz). And a control unit that demodulates and decodes the navigation message and outputs date / time information and position information. In the satellite radio wave reception processing unit 52, the control unit can convert the acquired GPS satellite date and time (GPS date and time) into UTC date and output. In addition, the satellite radio wave reception processing unit 52 has a local time setting storage unit 521. When a positioning operation is performed in which the control unit calculates the current position from the received data by the receiving unit, the control unit further sets the local time setting. The CPU 41 obtains the time zone to which the current position acquired with reference to the storage unit 521 and the daylight saving time enforcement rule at the current position are obtained, further converts the UTC date and time to local time, and setting information related to the standard radio wave reception target station. Output to.
In response to a control signal from the CPU 41, the satellite radio wave reception processing unit 52 is supplied with power from the power source unit 54 only during a period during which radio wave reception from the positioning satellite, calculation processing related to date acquisition and positioning, and various setting operations are performed. .
The satellite radio wave reception processing unit 52, the antenna A2, and the operation unit 47 constitute position information acquisition means.
The satellite radio wave reception processing unit 52 and the antenna A2 constitute a satellite radio wave reception unit and a positioning unit.

  The UART 53 performs parallel / serial conversion of data input / output between the satellite radio wave reception processing unit 52 and the CPU 41 to appropriately transmit / receive data.

  The power supply unit 54 supplies power necessary for the operation of each unit of the electronic timepiece 1. The power supply unit 54 includes, for example, a battery of a button type primary battery, and this battery is provided so as to be attachable / detachable. While this battery can supply electric power according to the operation load by the satellite radio wave reception processing unit 52, it is continuously and stable for a long time under the use of low power consumption mainly related to the clocking operation and date display operation. It is preferable to use a small and lightweight device that can be operated in a practical manner.

  FIG. 2 is a diagram illustrating the contents stored in the home clock and the world clock stored in the RAM 43 in the electronic timepiece 1 of the present embodiment.

In the electronic timepiece 1, settings relating to the home timepiece (HT) and the world timepiece (WT) are stored in the HT / WT setting storage unit 431. The contents stored in the HT / WT setting storage unit 431 include latitude / longitude information indicating each setting position (home position, world clock position) of HT and WT, and city information (home city, world clock city) corresponding to the latitude / longitude respectively. ), Time difference information from UTC date and time in the time zone to which these home position (city) and world clock position (city) belong, and information related to shift time from standard time when daylight saving time is in effect. This may also include information related to the daylight saving time implementation period. Further, at least one of the latitude / longitude information and the city information may be set.
The CPU 41 converts the UTC date and time output from the timing circuit 50 into local time based on these settings, and stores and updates the converted date and time in the RAM 43 as needed.

  For example, as shown in FIG. 2A, north latitude 35.7 degrees and east longitude 139.7 degrees are set as the home position, and Tokyo is selected as the home city corresponding thereto. Further, +9.0 hours are set as the time difference of the time zone to which the home position belongs, and a shift time +0.0 hours indicating non-implementation of daylight saving time is set. On the other hand, 37.8 degrees north latitude and 122.4 degrees west longitude are set as the world clock position, and San Francisco is selected as the world clock city according to this. In addition, -8.0 hours are set as the time difference of the time zone to which the world clock position belongs, and the shift time +1.0 hours during daylight saving time is set.

  As standard radio wave reception setting 432, JJY60 (registered trademark: JJY), which is a Japanese standard radio station that can be received in Tokyo, which is the home city, is set.

  On the other hand, as shown in FIG. 2B, in the electronic timepiece 1 of the present embodiment, information indicating the home position (home city) and the world clock position (world clock city) is not an actual latitude / longitude or city, It is possible to select UTC (Coordinated Universal Time) (information indicating a specific point). Here, UTC is set as information indicating the home position and home city. In this case, as the standard radio wave reception setting 432, JJY60, which is a standard radio wave transmission station that can be received in Tokyo set as a world clock city, is set.

Next, the local time setting operation in the electronic timepiece 1 of the present embodiment will be described.
In the electronic timepiece 1 of the present embodiment, the home city (for example, a representative city in the sales area of the electronic timepiece 1) and the world time city (for example, UTC) are set in advance. When positioning is performed by receiving radio waves from a positioning satellite, the latitude and longitude of the home position and / or the world clock position latitude and longitude are set and the corresponding city is selected, and the city is manually selected by the user. When the setting is selected, the home city or the world clock city is updated according to the setting mode. Then, with the update of the latitude / longitude information and the city information, the setting related to the time difference and daylight saving time enforcement rules are changed.

  FIG. 3 is a flowchart showing a control procedure by the CPU 41 of the local time information acquisition process executed by the electronic timepiece 1 of the present embodiment. This local time information acquisition processing is performed when a predetermined condition, for example, when an execution command is input by the user, when the position of the user (electronic timepiece 1) is significantly changed by an unillustrated sensor or the like, It is automatically activated at a timing set in advance (for example, once a day).

  When the local time information acquisition process is started, the CPU 41 determines whether or not both HT and WT are UTC times (step S101). The CPU 41 refers to the HT / WT setting storage unit 431 to determine whether or not both the setting information indicating the home city (home position) and the world clock city (world clock position) is UTC. When it is determined that at least one is not UTC (“NO” in step S101), the CPU 41 activates the satellite radio wave reception processing unit 52 and transmits a positioning request (step S102). The CPU 41 waits for a response from the satellite radio wave reception processing unit 52 and acquires the positioning result and the current date / time information.

  CPU41 discriminate | determines whether acquisition of the date was successful (step S103). If it is determined that the process has not been successful (“NO” in step S103), the CPU 41 ends the position information acquisition process. When it is determined that the operation has succeeded (“YES” in step S103), the CPU 41 determines whether or not the positioning has been successful (step S104). If it is determined that the positioning has not been successful ("NO" in step S104), the processing of the CPU 41 proceeds to step S108.

  If it is determined that the positioning is successful (“YES” in step S104), the CPU 41 determines whether UTC is set as information indicating the home city (step S105). If it is determined that UTC is set (“YES” in step S105), the CPU 41 sets the acquired current position as the world clock position (step S106). In addition, the CPU 41 performs local time setting related to the world clock (WT) according to the time zone to which the current position belongs and the daylight saving time enforcement rule obtained from the satellite radio wave reception processing unit 52 and stores them in the HT / WT setting storage unit 431. Let Then, the process of the CPU 41 proceeds to step S107.

  When it is determined that the information indicating the home city does not indicate UTC (“NO” in step S105), the CPU 41 sets the acquired current position as the home position (step S116). Further, the CPU 41 performs local time setting related to the home clock (HT) according to the time zone to which the current position belongs and the daylight saving time enforcement rule obtained together from the satellite radio wave reception processing unit 52, and stores them in the HT / WT setting storage unit 431. Let Then, the process of the CPU 41 proceeds to step S107.

  In step S107, the CPU 41 sets a standard radio wave transmission station to be received based on the acquired current position, and stores it as the standard radio wave reception setting 432 (step S107). When the setting information is received from the satellite radio wave reception processing unit 52, the CPU 41 can store the setting information as the standard radio wave reception setting 432 using this setting as it is. Then, the process of the CPU 41 proceeds to step S108.

  When the process proceeds to step S108, the CPU 41 corrects the date and time of the timing circuit 50 based on the acquired current date and time (UTC date and time), and the corrected date and time of the timing circuit 50 and the set HT setting and WT setting. The date and time to be counted as the home clock and the world clock is corrected based on (step S108). Then, the CPU 41 ends the local time information acquisition process.

  On the other hand, if it is determined in step S101 that both HT and WT are UTC times ("YES" in step S101), the CPU 41 activates the satellite radio wave reception processing unit 52, A request to obtain only information is made (step S122). The CPU 41 waits for a response from the satellite radio wave reception processing unit 52 and acquires date and time information.

  CPU41 discriminate | determines whether acquisition of date information was successful (step S123). If it is determined that the process has succeeded (“YES” in step S123), the process of the CPU 41 proceeds to step S108. If it is determined that it has not succeeded (failed) (“NO” in step S123), the CPU 41 ends the local time information acquisition process.

FIG. 4 is a flowchart showing a control procedure by the CPU 41 of the HT manual setting process executed by the electronic timepiece of this embodiment.
This HT manual setting process is started when a shift to the home city setting mode is detected by an input operation to the operation unit 47 by the user.

  When the HT manual setting process is started, the CPU 41 determines whether or not the user has confirmed the setting (step S201). When it is determined that the confirming operation has not been performed (“NO” in step S201), the CPU 41 repeats the process of step S201.

  If it is determined that the confirming operation has been performed (“YES” in step S201), the CPU 41 acquires information on the set home city, refers to the city setting information 422, and sets the time corresponding to the home city. Get zone information and daylight saving time enforcement rules. The CPU 41 causes the HT / WT setting storage unit 431 to store information related to the time difference between these home cities and their time zones and the daylight saving time implementation rules (step S202).

  CPU41 discriminate | determines whether the setting information which shows the updated home city is UTC (step S203). If it is determined that it is not UTC (“NO” in step S203), the CPU 41 sets a standard radio wave transmission station having a reception area including the set home city and stores it in the standard radio wave reception setting 432 (step S203). S225). Then, the CPU 41 ends the HT manual setting process.

  If it is determined that the home city setting information indicates UTC (“YES” in step S203), the CPU 41 determines whether or not the world clock city setting information indicates UTC (step S204). ). If it is determined that the setting information of the world clock city does not indicate UTC (“NO” in step S204), the CPU 41 refers to the city setting information 422 and has a standard radio wave having a reception area including the world clock city. A transmission station is set and stored in the standard radio wave reception setting 432 (step S215). Then, the CPU 41 ends the HT manual setting process.

  If it is determined that the setting information of the world clock city indicates UTC (“YES” in step S204), the CPU 41 sets the standard radio wave transmission station to be received to “none” (step S205). . Then, the CPU 41 ends the HT manual setting process.

FIG. 5 is a flowchart showing a control procedure by the CPU 41 of the WT manual setting process executed by the electronic timepiece of this embodiment.
This WT manual setting process is started when a transition to the setting mode of the world clock city is detected by an input operation to the operation unit 47 by the user.

  When the WT manual setting process is started, the CPU 41 determines whether or not the user has confirmed the setting (step S301). When it is determined that the confirming operation has not been performed (“NO” in step S301), the CPU 41 repeats the process of step S301.

  If it is determined that the confirming operation has been performed (“YES” in step S301), the CPU 41 acquires information on the set world clock city and refers to the city setting information 422 to correspond to the world clock city. Get time zone information and daylight saving time enforcement rules. The CPU 41 causes the HT / WT setting storage unit 431 to store information related to the time difference between these world clock cities and their time zones and the daylight saving time enforcement rules (step S302).

  CPU41 discriminate | determines whether the setting information of a home city has shown UTC (step S303). If it is determined that it is not UTC (“NO” in step S303), the CPU 41 ends the WT manual setting process as it is. Thereby, the setting of the standard radio wave transmission station corresponding to the currently set home city is maintained.

  If it is determined that the home city setting information indicates UTC (“YES” in step S303), the CPU 41 determines whether or not the updated world clock city setting information indicates UTC. (Step S304). When it is determined that the setting information of the world clock city does not indicate UTC (“NO” in step S304), the CPU 41 refers to the city setting information 422 and transmits the standard radio wave including the world clock city in the reception area. A station is set and stored in the standard radio wave reception setting 432 (step S315). Then, the CPU 41 ends the WT manual setting process.

  When it is determined that the setting information of the world clock city indicates UTC (“YES” in step S304), the CPU 41 sets the standard radio wave transmission station to be received to “none” (step S305). . Then, the CPU 41 ends the WT manual setting process.

As described above, the electronic timepiece 1 according to the present embodiment includes the timer circuit 50 that counts the current date and time, the CPU 41, the satellite radio wave reception processing unit 52 for obtaining position information, and the operation unit 47.
The CPU 41 operates as a local time setting means that determines one point of the world as a setting related to the home position for calculation of local time and determines a point of the world within a predetermined number (here, one) as the world clock city setting. In addition, it operates as a local time calculation means for converting the date and time counted by the time measuring circuit 50 respectively to the local time of the world point set as the setting related to the home position and the setting related to the world clock position.
In addition, when the new location information is acquired, the CPU 41 as the local time setting means, when a specific point predetermined as a setting related to the home location is selected, the world clock city according to the acquired location. The setting is updated, and when the specific point is not selected as the setting related to the home position, the home position (home city) is determined based on the acquired position.
Therefore, if a specific setting that the user does not want to change is made for the home position (home city), the setting of the world clock city (world clock position) is changed and the current position is counted as a sub and used. By doing so, it is possible to display more flexibly reflecting the current position while respecting the user's intention.

  Further, the information indicating the specific point includes UTC date and time. Therefore, it is possible to display a date and time (time) that does not correspond to a specific position and used for a specific purpose, and the world clock city can be displayed according to the current position acquired while giving priority to such date and time. Since (world clock position) is updated, it is possible to maintain the use and display of the UTC date and time with respect to user settings while performing display according to the current position acquired more flexibly.

  Also, as a position information acquisition means, it receives radio waves from positioning satellites such as GPS satellites, and as a positioning means, it performs demodulation, decoding and arithmetic processing based on the received radio waves, and calculates the current position. A processing unit 52 and an antenna A2 are provided. Therefore, as long as the sky field of view is more than necessary, the correct location information can be obtained anywhere in the world, and the current location can be determined while respecting the user's home city settings such as UTC time display settings. It is possible to flexibly set the world clock position in consideration.

Further, the CPU 41 as the position acquisition control unit causes the satellite radio wave reception processing unit 52 and the antenna A2 as the satellite radio wave reception unit to receive radio waves and acquire the current position, and the satellite radio wave reception processing unit 52 The acquisition of the current position is stopped when UTC is indicated in any of the setting related to the position and the setting information related to the world clock position. Accordingly, when the user does not want to change to the local time according to the current position for either the home position or the world clock, new position information is not acquired by the satellite radio wave reception processing unit 52 and the antenna A2. As a result, it is possible to prevent the acquisition operation of meaningless current position information and to improve the power consumption efficiency.
When a plurality of world clock settings are possible, it can be determined so that only one world clock position (world clock city) corresponding to the current position is considered. Alternatively, it may be determined whether or not one predetermined world clock position is UTC.

In addition, a long wave receiving unit 51 and an antenna A1 for receiving radio waves from a long wavelength band standard radio wave transmitting station for transmitting date and time information are provided, and the CPU 41 decodes the date and time information received by the long wave receiving unit 51 and the antenna A1. It operates as a date and time acquisition means for acquisition.
If the information indicating a specific point (UTC date and time) is determined as the setting related to the home position, the CPU 41 serving as the local time setting means sets one point determined in advance in the world clock city setting as the reception range. The standard radio wave transmission station is the reception target.
Therefore, when the home position (home city) is different from the current position, it is difficult to receive standard radio waves by referring to the home position, and appropriate standard radio wave setting is performed to maintain accurate date and time information. Reduces unnecessary power consumption caused by failure to receive standard radio waves.

The CPU 41 serving as a local time setting means includes an operation unit 47 that accepts an operation by the user. When the setting related to the home position is changed to one indicating a specific point (UTC) by the operation unit 47, the world clock city A standard radio wave transmission station in which one predetermined point in the setting is set as the reception range is set as the reception target, and the setting related to the home position by the operation unit 47 indicates a specific point (UTC) to a point other than the specific point ( When it is changed to (normal position information other than UTC), a standard radio wave transmission station in which a point related to the setting related to the home position is defined as a reception range is set as a reception target.
Thereby, according to the change of the setting regarding the home position (that is, the home city) by the user operation, the standard radio wave reception target station can be appropriately set according to the current position, and reception and time correction can be performed. .

In addition, it comprises a pointer 44, a stepping motor 45 and a drive circuit 46 as display means for simultaneously displaying the local time at the point related to the setting relating to the home position and the local time at at least one of the points related to the world clock city setting, The CPU 41 operates as display control means for controlling the display contents of these display means. When the setting related to the home position or the setting related to the world clock position is changed, the CPU 41 as the display control means causes the display means to display the local time of the point related to the changed setting.
As described above, in the electronic timepiece 1, by changing the local time to be displayed promptly according to the change of the home city (home position) and the world clock city (world clock position), the user can obtain the necessary time information without stress. Can be known.

  Further, in the electronic timepiece 1 having the timekeeping circuit 50 and having the world clock function, the local time setting when the position information is acquired is changed by the above-described method, so that the user's intention is respected and more flexible. The date and time to be counted and displayed can be set.

The present invention is not limited to the above-described embodiment, and various modifications can be made.
For example, in the above embodiment, the home position and the home city are not updated when UTC is set. However, even when a normal position or city is selected, Or when the setting is preset as a position that is not changed according to the positioning result, or when it is possible to perform a setting indicating that the user does not want to change the setting of the home position and home city. Alternatively, the settings of the world clock position and the world clock city may be updated.

  In the above embodiment, the position information is acquired based on the radio wave from the positioning satellite and the user operation. However, the position information is acquired from other methods, for example, a mobile phone or a smartphone via short-range wireless communication. Information may be acquired. As position information acquired from a mobile phone, a smart phone, or the like, for example, information such as latitude and longitude information or a city name may be used.

  In the above embodiment, an analog electronic timepiece that performs display using a hand has been described as an example, but a digital electronic timepiece using a digital display screen may be used. Further, in the case of user setting, an example of selecting from predetermined cities has been described, but latitude and longitude may be input manually.

  In the above embodiment, only one point is selected, counted, and displayed as the world clock, but a plurality of points may be set. In this case, display of a plurality of points may be possible at the same time, or may be sequentially switched according to a user operation. In addition, the information on each point may be temporarily displayed only when requested by a user operation, or a city name or the like may be always displayed.

  Further, when a plurality of world clock positions (world clock cities) can be set, the one corresponding to the current position can be identified, and the standard radio wave reception target station is selected according to the current position. Can be done. These multiple world clock positions may be assigned numbers, priorities, etc., and can be changed by specifying the numbers according to user operations, etc., or when positioning is performed The highest one may be changed.

  In the above embodiment, the positioning operation is stopped when UTC is set at both the home position and the world clock position. However, the positioning operation is performed only for the standard radio wave reception setting. You may let them.

In the above embodiment, the local time setting storage unit 521 of the satellite radio wave reception processing unit 52 and the city setting information 422 of the ROM 42 are held separately, but may be held in the same memory. All the setting processes may be performed by one CPU (CPU 41 or the like).
In addition, specific details such as the configuration and control contents shown in the above embodiment can be changed as appropriate without departing from the spirit of the present invention.

Although several embodiments of the present invention have been described, the scope of the present invention is not limited to the above-described embodiments, and includes the scope of the invention described in the claims and equivalents thereof. .
The invention described in the scope of claims attached to the application of this application will be added below. The item numbers of the claims described in the appendix are as set forth in the claims attached to the application of this application.

[Appendix]
<Claim 1>
A time counting means for counting the current date and time;
A local time setting means for setting one point of the world as a main setting for calculating local time, and setting a number of points in the world as a world clock setting within a predetermined number,
Local time calculation means for converting the time and date counted by the time measuring means, respectively, to local time of the world point set as the main setting and the world clock setting by the local time setting means;
Position information acquisition means;
With
The local time setting means is:
When new position information is acquired by the position information acquisition means, if a specific point predetermined as a main setting is selected, the position acquired by the position information acquisition means is set to the world clock setting. An electronic timepiece characterized in that the position acquired by the position information acquisition means is determined as the main setting when addition or replacement is performed as one and the specific point is not selected as the main setting.
<Claim 2>
2. The electronic timepiece according to claim 1, wherein the information indicating the specific point includes UTC date and time.
<Claim 3>
The position information acquisition means includes
Satellite radio wave receiving means for receiving radio waves from positioning satellites;
Positioning means for calculating the current position based on the radio wave received by the satellite radio wave receiving means;
The electronic timepiece according to claim 1, further comprising:
<Claim 4>
Position acquisition control means for receiving radio waves by the satellite radio wave reception means and acquiring the current position by the positioning means,
The position acquisition control means is
The electronic timepiece according to claim 3, wherein when the specific point is set in both the main setting and the world clock setting, acquisition of the current position is stopped.
<Claim 5>
A long wave receiving means for receiving radio waves from a long wavelength radio wave transmitting station that transmits date and time information;
Date and time acquisition means for decoding and acquiring date and time information received by the long wave receiving means;
With
The local time setting means is:
When the specific point is defined as the main setting, a long wavelength radio wave transmission station in which one predetermined point in the world clock setting is defined as a reception range is a reception target. The electronic timepiece according to any one of claims 1 to 4.
<Claim 6>
Comprising an operation accepting means for accepting an operation by a user;
When the main setting is changed to the specific point by the operation accepting unit, the local time setting unit is a long wavelength radio wave in which one point predetermined in the world clock setting is defined as a reception range. When the transmission station is a reception target, and the main setting is changed from the specific point to a point other than the specific point by the operation reception unit, the long wavelength in which the point related to the main setting is defined as a reception range The electronic timepiece according to claim 5, wherein a radio wave transmission station is a reception target.
<Claim 7>
Display means for simultaneously displaying the local time at the point related to the main setting and the local time at at least one of the points related to the world clock setting;
Display control means for controlling the display content of the display means;
With
The display control means includes
7. When the main information or the world clock setting is changed by the position information acquisition means, the local time of the point related to the changed setting is displayed by the display means. The electronic timepiece described in any one of the above.
<Claim 8>
A local time position setting method for setting a local time calculation position in an electronic timepiece having a time measuring means,
A local time setting step in which one point of the world is set as a main setting for calculation of local time, and the number of points in the world within a predetermined number is set as a world clock setting;
A local time calculating step for converting the local time of the world point set as the main setting and the world clock setting in the local time setting step, respectively, the date and time counted by the time measuring means;
Location information acquisition step,
Including
The local time setting step includes:
When new position information is acquired in the position information acquisition step, when a specific point predetermined as a main setting is selected, the position acquired in the position information acquisition step is set to the world clock setting. A local time position characterized in that the position acquired in the position information acquisition step is determined as the main setting when addition or replacement is performed as one and the specific point is not selected as the main setting. Setting method.

1 Electronic clock 41 CPU
42 ROM
421 Program 422 City setting information 423 Standard radio wave list 43 RAM
431 HT / WT setting storage unit 432 Standard radio wave reception setting 44 Pointer 45 Stepping motor 46 Driving circuit 47 Operation unit 48 Oscillation circuit 49 Dividing circuit 50 Time counting circuit 51 Long wave receiving unit 52 Satellite radio wave reception processing unit 521 Local time setting storage unit 53 UART
54 Power Supply A1 Antenna A2 Antenna

Claims (9)

A time counting means for counting the current date and time;
A local time setting means for setting one point of the world as a main setting for calculating local time, and setting a number of points in the world as a world clock setting within a predetermined number,
Local time calculation means for converting the time and date counted by the time measuring means, respectively, to local time of the world point set as the main setting and the world clock setting by the local time setting means;
Position information acquisition means for acquiring the current position ;
With
The local time setting means is:
When new position information is acquired by the position information acquisition means, if a specific point predetermined as a main setting is selected, the position acquired by the position information acquisition means is set to the world clock setting. Add or replace as one, and when the specific point is not selected as the main setting, determine the position acquired by the position information acquisition means as the main setting ,
The position information acquisition means stops acquisition of the current position when the specific point is set in both the main setting and the world clock setting.
An electronic timepiece characterized by that. A time counting means for counting the current date and time;
A local time setting means for setting one point of the world as a main setting for calculating local time, and setting a number of points in the world as a world clock setting within a predetermined number,
Local time calculation means for converting the time and date counted by the time measuring means, respectively, to local time of the world point set as the main setting and the world clock setting by the local time setting means;
Position information acquisition means;
A long wave receiving means for receiving radio waves from a long wavelength radio wave transmitting station that transmits date and time information;
Comprising an operation accepting means for accepting an operation by a user;
With
The local time setting means is:
When new position information is acquired by the position information acquisition means, if a specific point predetermined as a main setting is selected, the position acquired by the position information acquisition means is set to the world clock setting. Add or replace as one, and when the specific point is not selected as the main setting, determine the position acquired by the position information acquisition means as the main setting,
In addition, when the main setting is changed to the specific point by the operation accepting unit, a long wavelength radio wave transmitting station in which one predetermined point in the world clock setting is defined as a reception range is received. When the main setting is changed from the specific point to a point other than the specific point by the operation receiving means, a long wavelength radio wave transmission station in which the point related to the main setting is defined as a reception range is received. set to target,
An electronic timepiece characterized by that. 3. The electronic timepiece according to claim 1, wherein the information indicating the specific point includes a UTC date and time. The position information acquisition means includes
Satellite radio wave receiving means for receiving radio waves from positioning satellites;
Positioning means for calculating the current position based on the radio wave received by the satellite radio wave receiving means;
The electronic timepiece according to claim 1, further comprising: Ru includes a position acquisition control means for acquiring the current position by the positioning means by receiving radio waves by the satellite radio receiving means,
The electronic timepiece according to claim 4 . Includes the date and time acquisition means to acquire the time information received by the person the long-wave receiving means deciphered by,
The local time setting means is:
When the specific point is determined as the main setting, a long wavelength radio wave transmission station in which one predetermined point in the world clock setting is defined as a reception range is a reception target.
The electronic timepiece according to claim 2 . Display means for simultaneously displaying the local time at the point related to the main setting and the local time at at least one of the points related to the world clock setting;
Display control means for controlling the display content of the display means;
With
The display control means includes
7. When the main information or the world clock setting is changed by the position information acquisition means, the local time of the point related to the changed setting is displayed by the display means. The electronic timepiece described in any one of the above. A local time position setting method for setting a local time calculation position in an electronic timepiece having a time measuring means,
A local time setting step in which one point of the world is set as a main setting for calculation of local time, and the number of points in the world within a predetermined number is set as a world clock setting;
A local time calculating step for converting the local time of the world point set as the main setting and the world clock setting in the local time setting step, respectively, the date and time counted by the time measuring means;
A location information acquisition step for acquiring the current location ;
Including
The local time setting step includes:
When new position information is acquired in the position information acquisition step, when a specific point predetermined as a main setting is selected, the position acquired in the position information acquisition step is set to the world clock setting. Add or replace as one, and when the specific point is not selected as the main setting, the position acquired in the position information acquisition step is determined as the main setting,
The location information acquisition step includes:
When the specific point is set in both the main setting and the world clock setting, the acquisition of the current position is stopped.
A local time location setting method. A local time position setting method for setting a local time calculation position in an electronic timepiece having a time measuring means,
A local time setting step in which one point of the world is set as a main setting for calculation of local time, and the number of points in the world within a predetermined number is set as a world clock setting;
A local time calculating step for converting the local time of the world point set as the main setting and the world clock setting in the local time setting step, respectively, the date and time counted by the time measuring means;
Location information acquisition step,
Long wave reception step for receiving radio waves from a long wavelength radio wave transmission station that transmits date and time information,
An operation accepting step for accepting an operation by a user;
Including
The local time setting step includes:
When new position information is acquired in the position information acquisition step, when a specific point predetermined as a main setting is selected, the position acquired in the position information acquisition step is set to the world clock setting. Add or replace as one, and when the specific point is not selected as the main setting, the position acquired in the position information acquisition step is determined as the main setting,
In addition, when the main setting is changed to the specific point by the operation accepting step, a long wavelength radio wave transmission station in which one predetermined point in the world clock setting is set as a reception range is to be received. When the main setting is changed from the specific point to a point other than the specific point by the operation receiving step, a long wavelength radio wave transmission station in which the point related to the main setting is defined as a reception range is received. set to target,
A local time location setting method.

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