JP2018159679A - Electronic watch - Google Patents

Abstract

An object of the present invention is to reliably guide a user that a summer time is being implemented in a display target area without placing a burden on the user.
In a radio-controlled timepiece that displays a time measured based on a received radio wave, if the display target area to be displayed is different from the display target area set immediately before, the transition by the user Transition to SMT setting mode without operation. Accordingly, it is possible to reliably guide the user that the daylight saving time is being implemented in the display target area without placing a burden on the user.
[Selection] Figure 1

Description

  The present invention relates to an electronic timepiece that displays a time measured based on time information.

  Conventionally, a radio wave including time information transmitted from a standard radio wave or a GPS (Global Positioning System) satellite is received, and the time in the set time zone is measured based on the received radio wave and the time is displayed. There is a radio-controlled clock to play. In such radio-controlled timepieces, for example, the daylight saving time that is one hour ahead of the standard time can be displayed in countries and regions that have introduced the daylight saving time (SMT) system. There was a thing.

  Specifically, in the past, for example, in a radio-controlled timepiece that measures time based on a long-wave standard radio wave, it relates to daylight saving time such as time information included in the standard radio wave or additional information indicating whether summer time is being implemented. There has been a technique in which daylight saving time is automatically displayed using information without any user operation (see, for example, Patent Document 1 below).

  Moreover, in the radio-controlled timepiece that measures the time based on the radio wave transmitted from the GPS satellite, the radio-controlled timepiece itself does not store information on daylight saving time for each country or region. By performing a predetermined operation such as operating a push button, the summer time setting for displaying the summer time is switched ON / OFF.

  In addition, in radio-controlled timepieces that measure time based on radio waves transmitted from GPS satellites, after positioning in countries and regions where daylight saving time is implemented, the user can operate daylight saving time by operating the crown or push button. When the setting mode is set and the daylight saving time setting is turned on, the daylight saving time in the time zone to which the position where the positioning is performed belongs is displayed.

JP 2001-235568 A

  However, if the conventional technology described above is in an environment where it is not possible to receive a standard radio wave including information related to daylight saving time, it is unclear whether to apply the daylight saving time setting in the corresponding time zone. There was a problem that it was not possible to switch to the setting.

  In addition, radio waves transmitted from GPS satellites do not contain information about daylight saving time, and in the case of radio-controlled timepieces that measure time based on the radio waves, whether to apply daylight saving time settings only by receiving radio waves Was unknown, so there was a problem that it was not possible to automatically switch to summer time setting.

  In this way, if the radio-controlled timepiece is in an environment where it cannot receive information on daylight saving time from the outside, or if it is not equipped with a configuration that automatically sets daylight saving time based on the received radio waves, the time that is incorrect for the user May continue to be displayed. Until the user notices that the daylight saving time is being implemented, there is a possibility that the user may use the watch in a time-shifted state, which is inconvenient.

  In the radio-controlled timepiece that measures the time based on the radio wave transmitted from the GPS satellite, the above-described problems can be solved by adopting a configuration in which information regarding summer time is stored in the memory for each position information of the radio-controlled timepiece. Since the amount of information to be stored increases and the processing becomes complicated, it is particularly difficult to mount such a memory on a small and low power consumption watch.

  In order to eliminate the above-described problems caused by the prior art, the present invention provides an electronic timepiece that can reliably guide the user that daylight saving time is being implemented in the time display target area without placing a burden on the user. The purpose is to provide.

  In order to solve the above-described problems and achieve the object, an electronic timepiece according to the present invention includes a time measuring means for measuring an internal time, a display means for displaying the internal time measured by the time measuring means, and a time by the display means. Area setting means for setting a display target area to be displayed, and summer time that is added to the internal time when the display target area set by the area setting means is different from the display target area set immediately before Mode transition means for shifting to an SMT setting mode for setting an added value.

  In the electronic timepiece according to the present invention as set forth in the invention described above, the mode shifting means shifts to the SMT setting mode when an operation for changing the display target area is accepted.

  The electronic timepiece according to the present invention further comprises positioning means for receiving satellite radio waves and performing positioning based on the satellite radio waves in the above invention, and the display target area is set based on a positioning result by the positioning means. It is characterized by being.

  Further, in the electronic timepiece according to the present invention, in the above invention, when the mode transition unit is at least a predetermined distance away from a display target area set immediately before based on a positioning result by the positioning unit, It shifts to SMT setting mode, It is characterized by the above-mentioned.

  In the electronic timepiece according to the present invention as set forth in the invention described above, the mode shifting means does not shift to a mode different from the SMT setting mode until the operation in the SMT setting mode is completed. .

  The electronic timepiece according to the present invention further includes storage means for storing a feasible period during which daylight saving time may occur in the above invention, wherein the mode transition means has an internal time measured by the time measuring means, If it is included in the available period stored in the storage unit, the mode is shifted to the SMT setting mode.

  In the electronic timepiece according to the invention, in the above invention, the storage unit stores a plurality of executable periods for each region, and the mode transition unit stores a plurality of executable periods stored in the storage unit. A feasible period corresponding to the display target area is selected from the above, and when the internal time measured by the time measuring means is included in the selected feasible period, the mode is shifted to the SMT setting mode.

  The electronic timepiece according to the present invention is characterized in that, in the above-described invention, the electronic timepiece includes notification means for notifying that the mode has been shifted to the SMT setting mode for a predetermined time after the mode is shifted to the SMT setting mode.

  The electronic timepiece according to the present invention is the electronic timepiece according to the above invention, wherein the display unit is based on a predetermined SMT setting value when a predetermined time has elapsed since the mode transition unit shifted to the SMT setting mode. The daylight saving time is displayed.

  In the electronic timepiece according to the present invention, in the above invention, the notification unit does not accept a daylight saving time display operation until a predetermined time elapses after the mode shift unit shifts to the SMT setting mode. And notifying that the display operation is not accepted.

  According to the electronic timepiece of the present invention, there is an effect that it is possible to reliably guide the user that the daylight saving time is being implemented in the area where the time is to be displayed without placing a burden on the user.

It is explanatory drawing which shows the external appearance of the radio-controlled timepiece of embodiment concerning this invention. It is explanatory drawing which shows the hardware constitutions of the radio-controlled timepiece of embodiment concerning this invention. It is explanatory drawing (the 1) which shows the example of a display of a radio wave correction timepiece. It is explanatory drawing (the 2) which shows the example of a display of a radio wave correction timepiece. It is explanatory drawing (the 3) which shows the example of a display of a radio wave correction timepiece. It is explanatory drawing (the 4) which shows the example of a display of a radio wave correction timepiece. It is explanatory drawing (the 5) which shows the example of a display of a radio wave correction timepiece. It is a flowchart which shows an example of the process sequence of the radio-controlled timepiece of embodiment concerning this invention. It is explanatory drawing which shows the external appearance of the radio wave correction timepiece of another embodiment concerning this invention. It is explanatory drawing (the 1) which shows the example of a display of a liquid crystal panel. It is explanatory drawing (the 2) which shows the example of a display of a liquid crystal panel. It is explanatory drawing (the 3) which shows the example of a display of a liquid crystal panel.

  Exemplary embodiments of a radio-controlled timepiece for realizing an electronic timepiece according to the invention will be described below in detail with reference to the accompanying drawings.

(Configuration of radio-controlled watch)
First, the configuration of the radio-controlled timepiece according to the embodiment of the present invention will be described. FIG. 1 is an explanatory view showing the appearance of a radio-controlled timepiece according to an embodiment of the present invention. As shown in FIG. 1, the radio-controlled timepiece 100 includes a case (outer case) 101 that forms an exterior, and includes an antenna and a receiver that can receive radio waves including time information inside the case 101. Based on the time information of the data, the first drive unit can be driven to display an accurate time. The received radio wave includes a high-frequency signal such as a GPS satellite radio wave, a standard radio wave, or Bluetooth (registered trademark), and an antenna capable of receiving each radio wave can be appropriately selected and arranged. In the following embodiments, description will be made on the assumption that the antenna has an antenna capable of receiving GPS satellite radio waves.

  The case 101 is formed using, for example, a conductive member such as metal or a non-conductive member such as ceramics or resin, and has a substantially cylindrical shape with both ends opened.

  The opening on one end side of the case 101 is closed by a windshield 102 formed in a substantially disc shape using a transparent glass material or the like. The opening on the other end side of the case 101 is closed by a back cover member (not shown). Similar to the case 101, the back cover member is formed using a conductive member or a non-conductive member.

  The peripheral edge of the windshield 102 is supported by a bezel 103 having a ring shape with an inner diameter substantially the same as the diameter of the windshield 102. The bezel 103 is laminated on the case 101 with its outer peripheral edge being along the outer peripheral edge of the case 101. The bezel 103 may be provided so as to be rotatable relative to the case 101. Like the case 101, the bezel 103 can be formed using a conductive member or a non-conductive member.

  On the side surface of the case 101, an operation unit 104 including a crown 104a and various push buttons 104b is provided. The crown 104a can be pulled out one or two steps in a direction protruding from the side surface of the case 101. The state in which the crown 104a is not pulled out in the direction protruding from the side surface is defined as zero-step pulling. The crown 104a is provided so as to be rotatable around an axis, and the time displayed by the radio-controlled timepiece 100 can be adjusted by rotating. The push button 104b receives various operations by the user, and outputs a signal corresponding to the operation content to the control unit (see reference numeral 203 in FIG. 2) according to the received operation.

  A dial plate 105 is provided inside the case 101. The dial plate 105 is provided with a pointer (time indicator hand) 106, an index (index) 107, and the like. The pointer 106 is pivotally supported at the center of the dial plate 105 and is provided so as to be rotatable about the axis.

  Specifically, the pointer 106 can be realized by an hour hand 106a, a minute hand 106b, a second hand 106c, and the like, for example. The pointer 106 may be realized only by the hour hand 106a and the minute hand 106b without including the second hand 106c. The pointer 106 is connected to a driving mechanism including a pointer wheel, a stepping motor, a wheel train that connects the pointer wheel and the stepping motor, and the like connected to the pointer 106.

  The stepping motor coupled to the pointer 106 performs a forward (rightward) or reverse (counterclockwise) rotation operation according to the drive pulse output from the motor drive circuit. The drive mechanism transmits the rotation of the stepping motor to the pointer 106 via a train wheel or a pointer wheel, thereby rotating the pointer 106 in a predetermined direction corresponding to the rotation direction of the stepping motor.

  In the drive mechanism, there may be one stepping motor or a plurality of stepping motors. For example, each of the hands 106 such as the hour hand 106a, the minute hand 106b, and the second hand 106c can be independently driven by using the same number of stepping motors as the hands 106. Further, the number of stepping motors and the train wheel does not have to match the number of hands 106. For example, the hour hand 106a and the minute hand 106b may be driven by a first stepping motor, and the second hand 106c may be driven by a second stepping motor.

  The index 107 is arranged on a circumference centering on the rotation axis of the pointer 106, and indicates a position pointed by the pointer 106, that is, a time. The index 107 can be realized by, for example, letters, numbers, symbols, and the like. In the radio-controlled timepiece 100, the index 107, the hands 106, the driving mechanism, and the like on the dial plate 105 constitute a first driving unit (see reference numeral 204 in FIG. 2) for displaying time.

  The dial plate 105 is provided with a marker 110 for displaying a reception state of radio waves (satellite signals) transmitted from GPS satellites by the receiving unit. The marker 110 is, for example, a character such as “RX” indicating that a radio wave transmitted from a GPS satellite is being received, or “OK” or “NO” indicating success or failure of reception processing of a radio wave transmitted from a GPS satellite. This can be realized by a column and a symbol indicating each position indicated by the character string.

  For example, when the radio-controlled timepiece 100 indicates that the reception performed immediately before is successful, a specific hand 106 such as the second hand 106c is moved in response to a predetermined operation on the radio-controlled timepiece 100, and “OK” is displayed. Point to. Further, “NO” is indicated to indicate that the reception performed immediately before has failed.

  The dial plate 105 is provided with an annular dial ring 108 along the outer periphery of the dial plate 105. The look-back ring 108 is provided with a stamp 109 (hereinafter referred to as “city display”) for instructing information on the city and the time difference. The city display 109 is configured by arranging a plurality of city names or area names in the order based on the time zone. A signed numeric value of the time zone may be stamped instead of a plurality of city names or area names. The display target area in the present invention corresponds to a city name, an area name, or a time zone.

  The time zone can be specified based on UTC (Coordinated Universal Time). UTC is a universal standard time, and always represents an accurate time based on the international atomic time recorded by a cesium atomic clock. UTC represents time adjusted in leap seconds to correct the difference between international atomic time and the time based on the rotation of the earth (Universal Time).

  The city display 109 is based on the time difference between the time and UTC in the city or area specified by each city name or each area name that constitutes the city display 109, and the city or area having a smaller time difference indicates 12 o'clock in the clockwise direction. It is arranged so as to be located at a position close to the position (the upper side in the drawing in FIG. 1). The city display 109 represents a time difference of 24 hours per lap. The city display 109 indicates, for example, that there is a 12-hour time difference between the city displayed at the 12 o'clock position (LON: London) and the city displayed at the 6 o'clock position (AKL: Auckland). .

  By selecting one of a plurality of city names or region names constituting the city display 109, a display target region that is a target of time display by the first drive unit can be set. .

  The time zone is divided in consideration of the difference in longitude that causes a time difference of 4 minutes if it changes once, the spread in the longitude direction of the country or region, the location of the city, etc. In regions belonging to the same time zone Are the same standard time. The standard time in each time zone is expressed based on the time difference with respect to the reference time by UTC. The standard time can be measured based on time information included in radio waves transmitted from GPS satellites, for example.

  The time zone can be set, for example, by selecting a city or region. Specifically, the city or region selection operation is performed, for example, with a city name or a region name set as a time zone among a plurality of city names or region names indicated by the city display 109 in a state where the crown 104a is pulled down by one stage. This can be realized by a series of operations of setting the second hand 106c and operating the push button 104b in this state.

  Further, the time zone can be set based on the position information of the radio-controlled timepiece 100. The position information of the radio wave correction clock 100 indicates the current position of the radio wave correction clock 100. The current position of the radio-controlled timepiece 100 can be specified by positioning based on radio waves transmitted from a plurality of GPS satellites. Positioning is performed by calculating the distance from each of the four GPS satellites and calculating the position where each distance intersects. When the radio-controlled timepiece 100 performs positioning based on radio waves transmitted from GPS satellites, it sets a time zone based on the positioning results.

  Said 1st drive part displays the time in the time zone set based on selection operation with respect to the operation part 104, or a positioning result.

  The radio-controlled timepiece 100 of the present embodiment can set an addition value (summer time addition value) according to the applicability of daylight saving time in addition to the time difference according to the above time zone. The dial plate 105 is provided with a small window 111 for setting or confirming daylight saving time information. The small window 111 includes a functional needle 112 and a plurality of guide marks 113.

  The functional needle 112 is connected to the stepping motor via a predetermined train wheel, and rotates by the rotation of the stepping motor transmitted via the predetermined train wheel, and points to the initial position or one of the guide marks 113.

  In the radio-controlled timepiece 100, a second driving unit (see reference numeral 206 in FIG. 2) is configured by a small window 111, a predetermined wheel train, a stepping motor, and the like.

  The guidance mark 113 indicates the setting state of daylight saving time. For example, as shown in FIG. 1, “OFF” of the guidance mark 113a indicating that daylight saving time is not set (the daylight saving time function is OFF), the setting value of daylight saving time ( Hereinafter, “0.5” of the guide mark 113b indicating that the SMT set value is 0.5 hours (30 minutes), “1.0” of the guide mark 113c indicating that the SMT set value is 1 hour, It can be set to “SMT” of the guidance mark 113d indicating that it is a daylight saving time setting mode (hereinafter referred to as SMT setting mode). Here, OFF is equivalent to the SMT setting value being 0 hours.

  The SMT setting mode is shifted when the time zone set based on the selection operation on the operation unit 104 or the positioning result is different from the time zone set immediately before, that is, when the city is changed. When transitioning to the SMT setting mode, the function hand 112 points to the “SMT” guide mark 113d.

  The daylight saving time is set by operating the function hand 112 with the crown 104a and instructing one of the guide marks 113a to 113c indicating the set values “OFF”, “0.5”, and “1.0”, and then pushing the function hand 112. It is determined by pressing the button 104b. As described above, the SMT setting value can be arbitrarily selected and set by the user operating the operation unit 104 or the like in a state where the SMT setting mode is set.

  Specifically, when the function hand 112 points to the guide mark 113b of “0.5”, the SMT set value for 0.5 hour is set. At this time, the first drive unit displays the summer time obtained by adding 0.5 hours to the standard time in the time zone after the city change. Further, when the function hand 112 points to the “1.0” guide mark 113c, an SMT set value of 1.0 hour is set. At this time, the first drive unit displays summer time obtained by adding “1.0 hour” to the standard time in the time zone after the city change. Further, when the function hand 112 points to the “OFF” guide mark 113a, the SMT function is OFF, and therefore 0 hours is set as the set value. At this time, the first drive unit displays the standard time in the time zone after the city change. As described above, the first drive unit displays the summer time obtained by adding the SMT set value to the standard time. In the present embodiment, the summer time addition value according to the present invention is realized by the SMT setting value added to the standard time.

  Here, when the functional hand 112 is not in the SMT setting mode, the functional hand 112 is positioned at an initial position where none of the guide marks 113 is indicated. The initial position of the functional hand 112 can be, for example, a position indicating the 12 o'clock direction in FIG. In addition, a guide mark indicating that it is not in the SMT setting mode may be provided separately, and if it is not in the SMT setting mode, the second drive unit may be controlled so that the function hand 112 points to this guide mark.

(Hardware configuration of radio-controlled clock 100)
Next, a hardware configuration of the radio-controlled timepiece 100 according to the embodiment of the present invention will be described. FIG. 2 is an explanatory diagram showing a hardware configuration of the radio-controlled timepiece 100 according to the embodiment of the present invention. As shown in FIG. 2, the hardware of the radio-controlled timepiece 100 according to the embodiment of the present invention includes an operation unit 104, an antenna 201, a reception unit 202, a control unit 203, a first drive unit 204, A summer time setting unit (hereinafter referred to as an SMT setting unit) 205 and a second driving unit 206 are included.

  For example, in the case of the radio-controlled timepiece 100 that receives radio waves transmitted from GPS satellites, the antenna 201 can be realized by a patch antenna that receives radio waves having a frequency of about 1.6 GHz that are transmitted from GPS satellites. The antenna 201 is provided inside the case 101 and on the back side of the dial plate 105.

  Each GPS satellite orbits the earth orbit, is equipped with a high-precision atomic clock, and periodically transmits radio waves including time information measured by the atomic clock. Each GPS satellite repeatedly transmits navigation data with a total of 25 frames (pages) as one set. Each frame includes a signal for 30 seconds, and the GPS satellite transmits a signal of 25 frames in a cycle of 12.5 minutes.

  Further, each frame is composed of five subframes. Since one frame is 30 seconds, one subframe corresponds to a signal for 6 seconds. One subframe is composed of 10 words and includes information of 30 bits per word and 300 bits per subframe.

  The head word (first word) of each subframe is called a TLM (TeLeMetric word), and the head portion (that is, the head portion of the entire subframe) includes a preamble indicating the start position of the subframe. . Further, the second word (second word) of each subframe is referred to as HOW (Hand Over Word), and TOW (Time Of Week) information and WN (Week Number) information are included in the head portion thereof. .

  The TOW information is time information indicating the GPS time (that is, Time Of Week) starting from the beginning of the week (Sunday 0:00 am), and specifically indicates the total seconds from the beginning of the week. The total seconds from the beginning of the week indicated by the TOW information are reset to 0:00 (Coordinated Universal Time) UTC at 0: 00.00.00.

  The WN information indicates a week number (ie, WN: Week Number) to which the time represented by the TOW information belongs, and is counted up once a week every Sunday at 0:00 am. The WN information is stored in the first subframe of each frame in the satellite signal transmitted from the GPS satellite and transmitted from the GPS satellite. The radio-controlled timepiece 100 can obtain the GPS time measured by the GPS satellites based on time information such as TOW information and WN information obtained from satellite signals received from one or a plurality of GPS satellites.

  The GPS time obtained from TOW information and WN information is an integer number of seconds generated by the accumulation of leap seconds, which are seconds that are added to or deleted from Coordinated Universal Time UTC to adjust the difference from Coordinated Universal Time. There is a gap. The satellite signal transmitted by the GPS satellite also includes LS (Leap Second) information, which is a leap second correction value used to correct this deviation. Specifically, the LS information is stored in the fourth subframe of the frame on the 18th page in the navigation data.

  The radio-controlled timepiece 100 receives the LS information, and corrects the GPS time based on the LS information, thereby acquiring time information based on the coordinated universal time. The fourth subframe of the frame on the 18th page includes not only LS information but also information indicating the next leap second update scheduled date and time. The radio-controlled timepiece 100 may receive information related to the leap second update scheduled date and time together with the LS information.

  The receiving unit 202 can be realized by a high frequency circuit (RF circuit), a decoding circuit, or the like. The high-frequency circuit is an integrated circuit that operates at a high frequency, and amplifies and detects an analog signal based on the radio wave received by the antenna 201 and converts the analog signal into a baseband signal. The decoding circuit is an integrated circuit that performs baseband processing, decodes the baseband signal output from the high-frequency circuit, generates a bit string indicating the content of the data based on the radio wave received from the GPS satellite, and Output. In this embodiment, the radio wave receiving means according to the present invention can be realized by the antenna 201 and the receiving unit 202.

  The control unit 203 is realized by a microcomputer including a memory including a CPU, a ROM (Read Only Memory), a RAM (Random Access Memory), an RTC (Real Time Clock), a motor driving circuit, and the like. Can do. Specifically, for example, a non-volatile memory such as a MONOS (Metal Oxide Nitride Oxide Silicon) type memory can be used as the memory.

  The CPU performs various types of information processing according to various control programs stored in the ROM while writing data to be processed by the CPU using the RAM as a work memory, and for each part of the radio-controlled timepiece 100 such as a motor drive circuit. To output a drive signal. The RTC outputs a clock signal used for measuring the internal time of the radio-controlled timepiece 100 to the CPU.

  The control unit 203 drives the first drive unit and controls the time zone (city display 109) stamped on the dial ring 108 so as to be selectable by the second hand 106c. Then, the time zone selected by the operation unit 104 is set as a display target area, and the internal time is measured based on the clock signal output by the RTC and the set time zone. This internal time corresponds to the standard time in the time zone. The control unit 203, the first drive unit, the turning ring 108, and the operation unit 104 can realize an example of the area setting unit in the present invention.

  In addition, the control unit 203 drives the radio wave reception means (antenna 201 and reception unit 202), and updates the internal time to an accurate standard time based on time information included in satellite radio waves, standard radio waves, and the like. The timing of driving the radio wave receiving means is configured to be performed when a forced reception operation is performed according to the operation unit 104 or when a time (or period) of automatic measurement performed periodically is reached. be able to.

  In addition, the control unit 203 performs positioning based on radio waves transmitted from GPS satellites and specifies the current position of the radio-controlled timepiece 100. The control unit 203 receives radio wave reception means (the antenna 201 and the reception unit 202) when a forced reception operation for positioning is performed on the operation unit 104 or when the timing of automatic positioning that is performed periodically is reached. Drive and perform positioning. In this embodiment, the positioning means according to the present invention can be realized by the control unit 203. By the control unit 203 and the positioning means, another example of the area setting means in the present invention can be realized.

  Further, the control unit 203 measures the summer time obtained by adding “0.5 hour” or “1.0 hour” to the internal time (standard time) according to the set SMT set value. Then, the control unit 203 outputs a drive signal corresponding to the internal time to the first drive unit 204. When the set SMT set value is “OFF (0 hour)”, that is, when summer time is not set, the control unit 203 measures the standard time as the internal time with respect to the first drive unit 204. A drive signal for displaying is output. On the other hand, when the set SMT set value is “0.5 hours” or “1.0 hour”, the control unit 203 outputs a drive signal for displaying summer time to the first drive unit 204. In this embodiment, the time measuring means according to the present invention can be realized by the control unit 203.

  The first drive unit 204 is controlled by the control unit 203 and displays the standard time or summer time according to the drive signal output from the control unit 203. Specifically, the first driving unit 204 drives the stepping motor in accordance with the driving signal output from the control unit 203, and displays the standard time or summer time by rotating the pointer 106 connected to the stepping motor. To do. In this embodiment, the first drive unit 204 can realize the display means according to the present invention.

  The second drive unit 206 is controlled by the control unit 203 and displays whether or not it is in the SMT setting mode and the SMT setting value. Specifically, the second drive unit 206 drives the stepping motor according to the drive signal output from the control unit 203, and rotates the functional needle 112 connected to the stepping motor to thereby guide the marks 113a to 113d. Or a portion other than the guide mark 113 is displayed to indicate the state related to the SMT setting of the radio-controlled timepiece 100.

  The SMT setting unit 205 stores ON / OFF control of the daylight saving function and a specific SMT setting value, and outputs the result to the control unit 203 as necessary. The SMT setting unit 205 can be realized by a microcomputer that includes a CPU, a memory, and the like. The microcomputer that realizes the SMT setting unit 205 may be realized by the same microcomputer as the microcomputer that realizes the control unit 203, or may be a part of the control unit 203. The SMT setting value set in the SMT setting mode is stored in the setting value storage unit 205a. The set value storage unit 205a corresponds to a storage unit according to the present invention, and can be realized by a memory included in the microcomputer.

  Further, the SMT setting unit 205 can determine whether or not to shift to the SMT setting mode in accordance with the change of the display target area, and can output the result to the control unit 203. For example, when the display target area is set and the set display target area is different from the display target area set immediately before, that is, when the display target area is changed, the SMT setting mode is set. (Hereinafter referred to as automatic migration). At this time, the SMT setting unit 205 outputs the function hand 112 to the control unit 203 so that the second driving unit 206 instructs the guide mark 113d of “SMT”. Thereby, it is possible to notify the user that the operation mode of the radio-controlled timepiece 100 has shifted to the SMT setting mode, and a state in which the user does not know the implementation can be avoided.

  Specifically, when a time zone (including city or region name) selection operation for the operation unit 104 is accepted, or when positioning based on radio waves transmitted from GPS satellites is performed, the time zone to be newly set It is determined whether or not is different from the time zone set immediately before. If the newly set time zone is different from the time zone set immediately before, the mode shifts to the SMT setting mode. Moreover, when the city setting by manual operation is performed and it changes to a city different from the city set immediately before, you may make it transfer to SMT setting mode.

  Even if the newly set time zone is the same as the time zone set immediately before, the position information based on the positioning is constant from the previous positioning position or the reference position according to the set time zone. When there is the above moving distance, the mode may be shifted to the SMT setting mode.

  Further, calendar information can be further used to determine whether or not to automatically shift. The calendar information includes a daylight saving time implementation period or a period in which there is a possibility of implementation. If there is a time zone change and a daylight saving time implementation period or a period in which the implementation is possible, the SMT setting mode. It can be set as the structure which transfers to. The calendar information can be realized by a memory provided in the microcomputer.

  In this way, for example, even if the time zone after the change is an area where the summer time system is introduced in the summer, the internal time at the time of changing the time zone is not included in the implementation period of the summer time system (for example, In winter, spring, autumn, winter, etc.), it is possible not to enter the SMT setting mode.

  Furthermore, there may be a plurality of pieces of calendar information corresponding to the position information or city information obtained by positioning. For example, the sunshine hours (season) differ depending on whether the position information or city information belongs to the northern hemisphere or the southern hemisphere. Therefore, by storing the calendar information in which the period for applying summer time is different between the case where it is located in the Northern Hemisphere and the Southern Hemisphere, and using the corresponding calendar information according to the acquired location information or the set city information, It is possible to appropriately shift to the SMT setting mode.

  Further, the SMT setting unit 205 may determine that the SMT setting mode has been selected by operating the operation unit 104 and shift to the SMT setting mode (referred to as transition or manual transition). In the case of manual transition, the user needs a series of operations of performing a selection operation for pulling out the crown 104a by one stage and setting it to the SMT setting mode, and then performing a transition operation for operating a predetermined push button 104b. For this reason, when such a series of operations are performed, it can be determined that the user is consciously performing an operation related to the setting of daylight saving time.

  When shifting to the SMT setting mode by the automatic transition with respect to the manual transition, the user automatically switches to the SMT setting mode without going through the dedicated operation as described above. It is assumed that an operation different from the operation of the SMT setting is performed without noticing that is set. In order to avoid a malfunction due to such a situation, when shifting to the SMT setting mode by automatic transition, other operations other than the operation related to the SMT setting mode may be prohibited. As a result, when the radio-controlled timepiece 100 shifts to the SMT setting mode by automatic transition, the radio-controlled timepiece 100 does not shift to a mode different from the SMT setting mode until an operation for shifting to the SMT setting mode is accepted. Thus, it is possible to prevent the radio-controlled timepiece 100 from performing an operation that is not assumed by the user or malfunctioning due to the operation.

  Further, when the SMT setting unit 205 does not accept the transition operation until a predetermined time has elapsed since the transition to the SMT setting mode, the SMT setting unit 205 transitions from the SMT setting mode to the normal operation mode without any user operation. May be. The normal operation mode can be, for example, a time display mode when the crown 104a is pulled down to zero (the crown is not pulled) and the push button 104b is not operated. When shifting from the SMT setting mode to the normal operation mode, if the SMT setting operation is not accepted before the predetermined time elapses, the SMT setting value is set without the user's operation. It may be. In this case, the SMT setting value that is automatically set is determined in advance. In addition, when a predetermined time has passed without being determined, although an SMT setting operation has been performed, an SMT setting value corresponding to the guide mark 113 pointed to by the functional hand 112 immediately before shifting to the normal mode is set. You may do it.

  If the SMT setting unit 205 does not accept an SMT setting operation before a predetermined time elapses after shifting to the SMT setting mode, the SMT setting unit 205 may notify that the operation is not accepted. Specifically, by continuously pointing the guide mark 113d with the function hand 112, it is possible to notify that the SMT setting operation is not accepted. In this case, the notification means according to the present invention can be realized by the SMT setting unit 205 and the second driving unit 206.

  Alternatively, after a predetermined time has elapsed, the function hand 112 is returned to the initial position, and the hand movement of a specific pointer 106 such as the second hand 106c is changed every few seconds or reversely rotated to change the hand movement from the normal hand movement. By doing so, it may be notified that the setting operation of the SMT set value is not accepted. In this case, a specific pointer 106 such as the SMT setting unit 205 and the second hand 106c and a driving mechanism for moving the specific pointer 106 correspond to the notification means of the present invention.

  Alternatively, the user can be notified by sound or light using a buzzer or a light emitting element. In this case, the SMT setting unit 205, the buzzer, and the light emitting element correspond to the notification unit of the present invention.

  Thus, by notifying that the setting operation of the SMT setting value is not accepted, the user can be prompted to select whether or not to perform the SMT setting. Thereby, the time which a user desires can be displayed reliably.

  For the above-mentioned predetermined time, the time setting can be changed according to the type of operation immediately before the automatic transition. When the city information (including the time zone) is changed by the user's operation, the user operates while looking at the dial 105, so that the function hand 112 may be driven to be in the SMT setting mode. Is expensive. On the other hand, when the time zone is changed due to positioning reception, especially in the case of automatic positioning performed at a fixed time, there is a high possibility that the user does not notice the positioning itself. By making the predetermined time when shifting to the SMT setting mode by positioning longer than the predetermined time when shifting to the SMT setting mode in accordance with the operation of the user, the user notices that the user is in the SMT setting mode. It is possible to appropriately perform the SMT setting.

  In this embodiment, the SMT setting unit 205 can realize the mode transition means according to the present invention.

  As described above, the radio-controlled timepiece 100 shifts to the SMT setting mode without manual operation based on the time zone (including city information) and the positioning result, in addition to the specification to shift directly to the SMT setting mode by manual operation. Since it has a configuration, it is possible to easily shift to the SMT setting mode and to prevent the user from forgetting to set the SMT.

(Display example)
Next, a display example of the radio-controlled timepiece 100 according to the embodiment of the present invention will be described. 3A to 3E are explanatory diagrams illustrating display examples of the radio-controlled timepiece 100. FIG. 3A to 3E, positioning is performed based on the received radio wave, and the time zone specified based on the positioning result is a daylight saving time implementation area, and time is measured based on the received radio wave. Is displayed when the standard time is during the daylight saving time system implementation period in the target area.

  As shown in FIG. 3A, in a state before receiving the radio wave, the pointer 106 displays the time measured based on the previously received radio wave. In a state before receiving radio waves, the functional hand 112 of the small window 111 points to an initial position where no guide mark 113 is pointed.

  When the radio-controlled timepiece 100 receives the timed positioning reception or the forced positioning reception by the user's operation, the control circuit 203 moves the second hand 106c of the pointer 106 as shown in FIG. Point to “RX”. While receiving the radio wave, the function hand 112 of the small window 111 remains at the initial position.

  If the reception of the radio wave is successful (completed) and the time zone is different from the time zone before reception (for example, the time difference is +1 hour), the SMT setting unit 205 determines that the time zone has been changed to a different time zone, and the control circuit 203 The standard time is measured based on the time information included in the received radio wave, and the mode shifts to the SMT setting mode. As shown in FIG. 3C, the second hand 106c shows an “OK” marker 110 indicating that reception has been successful. In addition, the hour hand 106a and the minute hand 106b are moved, and a standard time (acquisition time) measured based on time information included in the received radio wave is displayed. Furthermore, the function hand 112 is driven, and a guide mark 113d indicating the SMT setting mode is indicated. In the state shown in FIG. 3C, the SMT set value can be selected and set by operating the operation unit 104 (rotation of the crown 104a or depression of the push button 104b).

  When an arbitrary SMT set value is selected by operating the operation unit 104, the radio-controlled timepiece 100 starts measuring summer time based on the SMT set value. The control circuit 203 displays the time obtained by adding the SMT set value to the standard time as daylight saving time in response to the guide mark 113 indicated by the function hand 112 by operating the operation unit 104. In FIG. 3, since the guide mark 113c with the function hand 112 of “1.0” is instructed, the control circuit 203 uses the time obtained by adding 1.0 hour of the SMT set value to the standard time as daylight saving time 106a. The minute hand 106b is moved to display the current time. At this time, the second hand 106c remains in a state indicating "OK" in the marker 110.

  Thereafter, as shown in FIG. 3E, when the SMT set value is set (determined) by the operation unit 104, in addition to the hour hand 106a and the minute hand 106b, the second hand 106c is also timed in consideration of the SMT set value with respect to the standard time. While moving the hand according to the time, the function hand 112 of the small window 111 is returned to the initial position.

  In the above description, the marker 110 indicating the reception status is arranged on the dial 105 and the second hand 106c points to the description. However, the marker 110 is placed on the small window 111 in the same manner as the guide mark 113 indicating the SMT setting value. It is good also as a structure which arrange | positions and the function hand 112 shows a reception condition. At this time, after successful positioning reception, the function hand 112 may indicate that the marker 110 is OK for a predetermined time and then indicate the guide mark 113d to indicate that the mode has shifted to the SMT setting mode. Alternatively, a plurality of functional needles 112 may be prepared, and the second driving unit 206 may drive each functional needle independently to give an instruction.

  In the above description, the change of the time zone by positioning has been described as an example. However, for example, when the city display 109 is selected by operating the operation unit 104, a city different from the current city information is selected. Sometimes, it can be configured to indicate “SMT” of the guide mark 113d indicating that the function hand 112 has shifted to the SMT setting mode.

(Processing procedure of radio wave correction watch 100)
Next, the processing procedure of the radio-controlled timepiece 100 according to the embodiment of the present invention will be described. FIG. 4 is a flowchart showing an example of a processing procedure of the radio-controlled timepiece 100 according to the embodiment of the present invention.

  In the flowchart of FIG. 4, first, the process waits until the time zone is changed (step S401). As described above, the time zone is changed when a time zone different from the previous time zone is set by operation of the operation unit 104 or positioning reception, or the position information and time zone by positioning reception are the same time zone. The reference position is a distance that is more than a predetermined distance. If there is no change in the time zone, it waits until there is a change (step S401: No).

  If the time zone has been changed (step S401: Yes), it is determined whether or not the current time is the daylight saving time application period (step S402). Whether or not it is a daylight saving time application period is determined by comparing the internal time measured by the control circuit 203 with calendar information having information related to the daylight saving time application period (including applicability) stored in the memory. Is done. That is, if the current time is not the daylight saving time application period (step S402: No), the SMT set value is set to OFF (0 hours) (step S413), and the process ends. If the current time is the daylight saving time application period (step S402: Yes), the process proceeds to the SMT setting mode (step S403). If the information regarding the daylight saving time application period is not stored in the memory, step S402 may be omitted.

  Then, operation processing in modes other than the SMT setting mode is prohibited (step S404). In step S404, for example, by invalidating the signal output from the operation unit 104 to the control unit 203, operation processing in modes other than the SMT setting mode is prohibited. By not accepting an operation process other than the SMT setting mode, the user can easily notice that the SMT setting mode is set.

  Next, the time since the transition to the SMT setting mode is counted, and it is determined whether a predetermined elapsed time has passed (step S405). If it is determined in step S405 that the predetermined elapsed time has not passed (step S405: No), it is determined whether or not an SMT set value has been selected by operating the operation unit 104 (step S406).

  If no SMT set value is selected in step S406 (step S406: No), the process returns to step S405. When the SMT set value is selected (step S406: Yes), the selected SMT set value is added to the standard time, and the control circuit 203 drives the first drive unit 204, and the SMT set value is set at this standard time. The time when is added is displayed (step S407).

  Next, it is determined whether or not an SMT set value has been determined (step S408). It is determined whether a determination operation has been performed by operating the operation unit 104 with respect to the SMT setting value selected in step S406. If there is a determination operation (step S408: Yes), the function hand 112 is moved to the initial position. Thus, the SMT setting mode is ended (step S409), and a series of processes is ended.

  On the other hand, when the SMT set value has not been determined (step S408: No), the process returns to step S405. That is, while the SMT set value is selected, the time at the SMT set value instructed to be selected is displayed simultaneously with the selection.

  In step S405, when the predetermined time has elapsed (step S405: Yes), the predetermined SMT setting value is set and the SMT setting mode is ended. As for the predetermined SMT setting value, when the setting value stored in the memory or the like is used in advance, and the SMT setting value is not determined, the SMT setting value that is selected immediately before the predetermined time elapses. Is used as a predetermined SMT set value. Which one is set as the predetermined SMT setting value can be determined by the following step S410.

  First, it is determined whether or not an operation by the operation unit 104 has been performed until a predetermined time has elapsed (step S410). Whether or not the operation has been performed is, for example, whether the functional hand 112 remains the guide mark 113d “SMT”, “OFF” of the guide mark 113a indicating the SMT set value, “0.5” of the guide mark 113b, It can be determined by indicating any one of “1.0” of the guidance mark 113c.

  If there is an operation by the operation unit 104 until the predetermined time has elapsed (step S410: Yes), the setting value of the guidance mark indicated by the functional hand 112 after the predetermined time has elapsed (last) is set to the SMT setting value. (Step S411), the process proceeds to step S409 to end the SMT setting mode. That is, a value obtained by adding the value indicated by the function hand 112 after a predetermined time has been added to the standard time as a predetermined SMT set value is displayed as the current time.

  In step S410, when there is no operation by the operation unit 104 until the predetermined time elapses (step S410: No), a predetermined SMT setting value set in advance is set (step S412), and the process proceeds to step S409. Transition is made and the SMT setting mode is terminated. Here, the predetermined SMT set value can be set to, for example, one of OFF, 0.5 hour, and 1.0 hour. The standard time corresponding to the zone is displayed as the current time, and when 1.0 hour is set, the summer time obtained by adding 1 hour to the standard time is displayed as the current time. The predetermined SMT setting value set in advance may be configured to be set in advance by the user. At this time, the fact that the operation unit 104 has not been operated means that the user may not be aware of the SMT setting mode, and therefore means for notifying the user that the SMT setting value has been automatically determined is provided. It is good also as a structure which informs.

  In the above-described embodiment, the example in which the SMT setting mode for daylight saving time is set when the time zone is changed has been described, but instead of daylight saving time, the winter time is returned (delayed) by a predetermined time with respect to the standard time. Alternatively, a mode for setting time called winter time may be set.

  In each of the above-described embodiments, the example in which the second driving unit 206 is realized by the small window 111 has been described. However, the second driving unit 206 is not limited to displaying the target using a needle such as the small window 111. For example, the second drive unit 206 may be realized by a liquid crystal panel that digitally displays the operation mode.

  FIG. 5 is an explanatory view showing the appearance of a radio-controlled timepiece 600 according to another embodiment of the present invention. As shown in FIG. 5, a radio wave correction timepiece 600 according to another embodiment includes a liquid crystal panel 601 instead of the small window 111 of the radio wave correction timepiece 100 according to the embodiment.

  The liquid crystal panel 601 includes a glass substrate, a liquid crystal material, a backlight, and the like. The liquid crystal material is sandwiched between a pair of glass substrates while being filled between the transparent electrodes. An alignment film for aligning liquid crystal molecules in a certain direction is provided between the liquid crystal material and the transparent electrode. The liquid crystal panel 601 is drive-controlled by the control unit 203 and digitally displays an operation mode based on a drive signal from the control unit 203.

(Display example of the liquid crystal panel 601)
6A to 6C are explanatory diagrams illustrating display examples of the liquid crystal panel 601. FIG. The liquid crystal panel 601 has different display contents depending on whether or not the SMT setting mode is set. Specifically, when the SMT set value is “0 hour”, the liquid crystal panel 601 displays “SMT OFF” as shown in FIG. 6A.

  Further, the liquid crystal panel 601 displays the SMT setting value as shown in FIG. 6B or 6C according to the set SMT setting value. Specifically, for example, in a state where the daylight saving time that is 0.5 hours (30 minutes) earlier than the standard time is set, the liquid crystal panel 601 displays “SMT 0.5” as shown in FIG. 6B. . Specifically, for example, in a state where the summer time that is 1.0 hour earlier than the standard time is displayed, the liquid crystal panel 601 displays “SMT 1.0” as shown in FIG. 6C.

  The period for performing display as shown in FIGS. 6A to 6C on the liquid crystal panel 601 may be limited to a predetermined time. Accordingly, for example, even when the liquid crystal panel 601 is used to guide a plurality of pieces of information other than information related to summer time, a situation where the liquid crystal panel 601 is used only for notification of summer time is avoided, and the liquid crystal panel 601 can be used efficiently.

  In each of the above-described embodiments, an example has been described in which the first driving unit 204 for displaying time is realized by the index 107, the hands 106, the driving mechanism, and the like on the dial plate 105. The radio-controlled timepiece 100 according to the embodiment of the present invention is not limited to this. For example, the first driving unit 204 may be realized by a liquid crystal panel 601 that digitally displays the time instead of the first driving unit 204 that displays the time by the hands 106. Also, the city display 109 is provided on the look-back ring 108 and instructed by the pointer 106, but the city information may be displayed on the liquid crystal panel 601 and selected and set by operating the operation unit 104.

  In the above-described embodiment, the radio wave correction watch that receives radio waves transmitted from GPS satellites has been described. However, the present invention is not limited to this. Instead of or in addition to the radio wave transmitted from the GPS satellite, a radio wave correction clock that receives an external radio wave such as a standard radio wave or Bluetooth (registered trademark) may be used. Also, an electronic timepiece that does not use external radio wave reception (without an antenna) may be used. Even with such a radio-controlled timepiece or electronic timepiece, if the time zone or city is changed manually by the user, daylight saving time is implemented by shifting to the SMT setting mode (or Possible).

  As described above, the electronic timepiece according to the present invention is useful for an electronic timepiece that displays time measured based on received radio waves, and is particularly suitable for an electronic timepiece that displays time for each display target area.

DESCRIPTION OF SYMBOLS 100 Radio wave correction clock 104 Operation part 104a Crown 104b Push button 105 Dial 106 Pointer 106a Hour hand 106b Minute hand 106c Second hand 109 City display 110 Marker 111 Small window 112 Function hand 113 (113a-113d) Guide mark 201 Antenna 202 Receiving part 203 Control part 204 First drive unit 205 SMT setting unit 206 Second drive unit 601 Liquid crystal panel

Claims (10)

A time measuring means for measuring the internal time;
Display means for displaying the internal time measured by the time measuring means;
Area setting means for setting a display target area to be a target of time display by the display means;
When the display target area set by the area setting means is different from the display target area set immediately before, a mode shift means for shifting to an SMT setting mode for setting a summer time addition value to be added to the internal time; An electronic timepiece characterized by comprising: 2. The electronic timepiece according to claim 1, wherein the mode shift unit shifts to the SMT setting mode when an operation for changing the display target area is received. It has positioning means that receives satellite radio waves and performs positioning based on the satellite radio waves,
The electronic timepiece according to claim 1, wherein the display target area is set based on a positioning result obtained by the positioning unit. The mode transition means shifts to the SMT setting mode when the positioning position based on the positioning result by the positioning means is more than a predetermined distance from the display target area set immediately before. The electronic watch described. The electronic timepiece according to any one of claims 1 to 4, wherein the mode transition means does not shift to a mode different from the SMT setting mode until the operation in the SMT setting mode is completed. . Comprising storage means for storing a feasible period during which daylight saving time may occur,
The mode shift means shifts to the SMT setting mode when the internal time measured by the time measuring means is included in an executable period stored by the storage means. One electronic clock described in one. The storage means stores a plurality of feasible periods for each region,
The mode transition means selects a feasible period according to the display target area from a plurality of feasible periods stored in the storage means, and the internal time measured by the time measuring means is included in the selected feasible period The electronic timepiece according to claim 6, wherein the electronic timepiece shifts to the SMT setting mode. The electronic timepiece according to any one of claims 1 to 7, further comprising notification means for notifying that a transition has been made to the SMT setting mode for a predetermined time after the transition to the SMT setting mode. The said display means displays summer time based on the setting value of predetermined | prescribed SMT, when predetermined time passes after shifting to the said SMT setting mode by the said mode transfer means. The electronic timepiece described in any one of the above. The notification means notifies that the display operation is not accepted when the daylight saving time display operation is not received before a predetermined time elapses after the mode transition means shifts to the SMT setting mode. The electronic timepiece according to claim 8 or 9.

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