JP2009229106A - Satellite signal receiving device, and method of controlling satellite signal receiving device - Google Patents

Abstract

To provide a satellite signal receiving apparatus capable of easily and surely selecting a positioning mode and a time adjustment mode and performing a receiving process when a user performs a manual operation.
A satellite signal receiving apparatus includes a reception control unit 51 that controls the operation of a receiving unit, a display control unit 54 that controls display of a display unit, and an operation detection unit 57 that detects an operation of an external operation member. Prepare. The operation detection means 57 detects each operation of time display mode selection operation, positioning display mode selection operation, and reception operation by an external operation member. The display control means 54 is set to a time display mode for displaying time information when a time display mode selection operation is detected, and a positioning display mode for displaying positioning information when a positioning display mode selection operation is detected. Set to The reception control means 51 controls the receiving unit in the time correction mode when a receiving operation is detected in the time display mode, and controls the receiving unit in the positioning mode when a receiving operation is detected in the positioning display mode.
[Selection] Figure 5

Description

  The present invention relates to a satellite signal receiving apparatus that receives a signal from a position information satellite such as a GPS satellite and a control method for the satellite signal receiving apparatus.

In the GPS (Global Positioning System) system, which is a system for positioning its own position, a GPS satellite having an orbit around the earth is used, and positioning for positioning the current position of a receiver that receives signals from this satellite. The device has been put into practical use.
The GPS satellite is equipped with an atomic clock. For this reason, the GPS satellite has extremely accurate time information (GPS time, satellite time information).
For this reason, there has been proposed an electronic device that receives a signal (navigation message) from a GPS satellite, acquires time information, and corrects the display time using the time information (see Patent Document 1).

In the electronic device disclosed in Patent Document 1, positioning is performed by receiving signals from three or more GPS satellites, and the time zone of the positioning point (current position) is obtained. And the local time of a positioning point is calculated and displayed from the time difference based on this time zone and the reference time of the built-in clock.
The electronic device disclosed in Patent Document 1 performs the time calculation based on the positioning process, for example, once a day, for example, so that even when the movement across the time zone is performed, the electronic device can move. The accompanying time difference correction can be performed automatically.

  When the time zone is set, only satellite signals from one GPS satellite are received, and TOW (Time of Week, GPS time, included in the satellite signal, every week from the beginning of the week) It is also known that the time can be corrected if a signal can be acquired (for example, see Patent Document 2).

JP 9-297191 A Japanese Patent Laid-Open No. 10-82875

  However, as described in Patent Document 1, the positioning process must acquire orbit information from three or more GPS satellites, and the reception process takes time, which increases power consumption. For this reason, in particular, when the battery capacity cannot be increased so much due to the influence of the size, such as a wristwatch, there is a problem that the duration is shortened and the usability is reduced when the power consumption is increased.

For this reason, positioning processing is performed as much as possible without performing the positioning process. Normally, as shown in Patent Document 2, a satellite signal from one GPS satellite is received and time correction is performed, so that the correct time can be displayed and consumed. It is conceivable that power can also be reduced.
For example, a positioning process is required to correct the time when moving across time zones. In other words, only when moving to an area with a different time zone on an overseas business trip or overseas trip, etc., positioning is performed in `` positioning mode '', positioning information of latitude and longitude is obtained, the time zone is obtained from this positioning information, and the time zone is Based on this, it is possible to obtain a time difference with respect to UTC (Coordinated Universal Time) and correct the time. In the positioning mode, highly accurate time information (GPS time) can be acquired simultaneously with positioning, and UTC can be obtained by adding a predetermined UTC offset, so that time correction can be performed simultaneously.
On the other hand, if you are not moving across time zones, it is necessary to perform positioning processing only at the beginning of moving to that time zone and adjust the time zone to that region. The “correction mode” can be performed to receive only time information and correct the time.

  As described above, in order to eliminate wasteful reception processing and reduce power consumption, the user can manually switch between the reception operation in the positioning mode and the reception operation in the time correction mode. desirable.

However, when switching between these two reception modes by manual operation, in particular, in a small device such as a wristwatch, a dedicated external operation member cannot be provided for each reception mode. Must be used for operation.
For this reason, the operation of each reception mode becomes complicated, and it becomes difficult for the user to grasp the operation of each reception mode, so that there is a problem that an erroneous operation is performed.

  The present invention relates to a satellite signal receiving device and a control of the satellite signal receiving device capable of easily and surely selecting a positioning mode and a time correction mode and performing reception processing when a user performs manual reception. It aims to provide a method.

  A satellite signal receiving device of the present invention is a satellite signal receiving device including a receiving unit that receives a satellite signal transmitted from a position information satellite, a display unit that displays time information and positioning information, and an external operation member. A reception control means for controlling the operation of the receiving section; a display control means for controlling the display of the display means; and an operation detection means for detecting an operation of the external operation member. The operation member is configured to be capable of detecting at least a time display mode selection operation, a positioning display mode selection operation, and a reception operation, and the display control means detects the time display mode selection operation by the operation detection means. In the case where the time display mode is set, the time display mode for displaying time information on the display means is set. When the operation detection means detects the selection operation of the positioning display mode, In the positioning display mode for displaying the positioning information on the display means, the reception control means, when the reception information is detected by the operation detection means in a state where the time information is displayed on the display means, When the receiving unit is controlled in a time adjustment mode in which the satellite signal is received and time adjustment processing is performed and positioning information is displayed on the display unit, and a reception operation is detected by the operation detection unit Is characterized in that the receiving unit is controlled in a positioning mode in which the satellite signal is received and a positioning process is performed.

According to the present invention, the display on the display means can be switched to the time display mode or the positioning display mode by the display control means. When a reception operation is performed, the display process corresponds to the display mode displayed on the display means. If the time display mode is set, the reception process is performed in the time correction mode and the positioning display mode is set. If so, reception processing is performed in the positioning mode. For this reason, if the user confirms the display mode on the display means, when the reception operation is performed, the user can easily determine in which mode the reception process is performed. For this reason, the convenience for the user can be improved, and the user can easily and reliably perform the reception operation in the desired reception mode.
Therefore, the user can perform reception processing in the positioning mode with high power consumption only when necessary, and when performing time correction, can reliably perform reception processing in the time correction mode with low power consumption. . For this reason, it is not intended to receive the time correction mode, but it will not accidentally operate to receive the positioning mode, and it will not waste power due to an incorrect operation. In the satellite signal receiving apparatus, the duration can be increased and the convenience can be improved.

  In the satellite signal receiving device of the present invention, when the display control unit is set to the time display mode, the display unit displays at least one type of information of year / month / day / day / hour / minute / second as time information. When the positioning display mode is set, it is preferable that the display means displays a map and information indicating a position on the map as positioning information, or displays latitude and longitude as positioning information.

  According to the present invention, it is possible to determine that the time display mode is displayed when information about the time is displayed, and it is possible to determine the positioning display mode when information about the positioning is displayed. The user can grasp the display mode with certainty. In particular, if the display means displays a map and information indicating the position on the map, the user can more easily understand that the positioning information is displayed.

  In the satellite signal receiving apparatus according to the present invention, the display means includes a pointer capable of changing the indicated position, and the display control means, when the time display mode is set, displays the year displayed on the display means. The time information is displayed by designating the scale indicating at least one type of information on Monday, Sunday, hour, minute and second with the hands, and when the positioning display mode is set, the map is displayed on the display means. It is preferable that the positioning information is displayed by indicating the position with the pointer, or the positioning information is displayed by indicating the scale indicating the latitude and longitude displayed on the display means with the pointer.

According to the present invention as described above, the user can surely determine whether the time display mode or the positioning display mode is present by checking the indication of the pointer.
In addition, since time information and positioning information are displayed in accordance with the directions of the pointer, it is possible to provide a satellite signal receiving device that is excellent in design and visibility and has a high-class feeling.

  In the satellite signal receiving apparatus of the present invention, the display means includes a first display unit and a second display unit, the first display unit includes a first pointer and a first dial, and the second display unit includes The first dial is divided into a first area and a second area, and a scale indicating either year / month / day / day / hour / minute / second is formed in the first area. In the second area, a scale indicating latitude or longitude is formed, and the second dial is formed with a scale indicating either year / month / day / day / hour / second and a scale indicating longitude or latitude. When the time display mode is set, the display control means moves the first hand of the first sub-clock and indicates a scale indicating one of the current year, month, day, day, hour, minute, second, Move the second hand of the second small clock and indicate the scale indicating either the current day of the month, Sunday, hour, minute or second. When the positioning display mode is set, the first hand of the first small clock is moved, the scale indicating the latitude or longitude of the obtained positioning information is indicated, and the second hand of the second small clock is moved. It is preferable to indicate a scale indicating the longitude or latitude of the positioning information.

In the present invention, since the latitude and longitude can be displayed by the two display units, the positioning information can be displayed only with the pointer without providing an electrical display such as a liquid crystal. For this reason, for example, each display unit can be provided as a small clock, and a clock with excellent design can be configured by using the satellite signal receiving device of the present invention.
Each display unit can indicate not only the positioning information but also the time and day of the week. Note that the time displayed on the second dial plate is not particularly limited, and one that displays any of hour, minute, second, day, and month can be employed. Therefore, the second display unit can be used as a 24-hour hand, for example.

In the satellite signal receiving device of the present invention, it is preferable that a map is displayed on the second area and the second dial of the first dial.
According to such a configuration, the user can easily grasp the second area where the map is displayed and the area where the positioning information is displayed on the second dial, and the current display mode is also ensured. And can be easily judged.

In the satellite signal receiving device of the present invention, it is preferable that the first dial and the second dial are constituted by a memory-type display device, and the display control means is configured to be able to rewrite the map and the scale. .
According to such a structure, since the display of each 1st dial plate and a 2nd dial plate can be changed, the scale and map suitable for the information to display can be displayed, and it can make it easy for a user to grasp | ascertain information.
Furthermore, if the display device is configured by a memory display device such as an EPD (electrophoretic display), power consumption can be reduced, and the duration time can be extended even in a wristwatch or the like. In particular, the map and scale do not need to be rewritten frequently, so that power consumption can be further reduced.

  In the satellite signal receiving apparatus of the present invention, the display means displays a map in part, and a scale or arrangement for indicating at least one type of time information of year, month, sunday, hour, minute, second in an area outside the map. When the display control means is set to the time display mode, the display control means moves the hands to indicate a scale of the time information or an array table. When the positioning display mode is set, it is preferable to move the pointer based on the acquired positioning information to indicate a specific position on the map.

  At this time, when the time display mode is set, the display control unit moves the hands and scales or arranges the time information at an intersection of at least two hands or a tip of the hands. When the positioning display mode is set, it is preferable to move the pointer and indicate a specific position on the map at the intersection of at least two pointers.

According to the present invention as described above, by providing a plurality of pointers, it is possible to instruct each part of the map developed two-dimensionally, for example, by crossing the pointers at the intersections. For this reason, positioning information can be instruct | indicated by the position on a map, and the user can grasp | ascertain positioning information easily.
As for time information, for example, when dates are two-dimensionally arranged like a calendar, the date can be indicated at the intersection of each pointer, and in this case, the time information can be easily grasped. .
Furthermore, if a plurality of scales are instructed by a plurality of hands, a plurality of types of time information can be instructed by each hand. For this reason, for example, time information such as month and day or day and day of the week can be instructed at the same time, and convenience can be improved.

  In the present invention, it is preferable that the display means is composed of a memory-type display device, and the display control means is configured to be able to rewrite a map and time information displayed on the display means.

According to such a structure, since the display of a display means can be changed, the scale and map suitable for the information to display can be displayed, and it can make it easy for a user to grasp information.
Furthermore, if the display device is configured by a memory display device such as an EPD (electrophoretic display), power consumption can be reduced, and the duration time can be extended even in a wristwatch or the like. In particular, time information such as maps and year / month / day does not need to be rewritten frequently, so that power consumption can be further reduced.

  In the satellite signal receiving device of the present invention, the display means includes a pointer, a positioning information display area for displaying positioning information, and a time information display area for displaying at least one type of time information of year / month / day / day / hour / hour / second. The positioning information display area displays map information indicating a time zone, the time information display area displays a scale for indicating the time information, and the display control means includes the time display When the mode is set, the pointer is moved to the time information display area to indicate the scale, and when the positioning display mode is set, the pointer is moved to the positioning information display area. It is preferable to indicate a time zone on the map.

  Also in this invention, it can be easily grasped whether it is a time display mode or a positioning display mode by the position of the pointer. In addition, since the time zone corresponding to the latitude and longitude of the current location, which is the positioning information, is indicated on the map by the pointer, the user can easily grasp the time zone, and the convenience can be improved.

  In the satellite signal receiving device of the present invention, the display means includes a display device capable of rewriting the display, a positioning information display area for displaying positioning information, and at least one type of time of year / month / day / day / hour / hour / second. A time information display area for displaying information, and when the time display mode is set, the display control means displays that the time information display area is selected, and the time information When time information is displayed in the display area and the positioning display mode is set, it is displayed that the positioning information display area is selected, and the positioning information is displayed in the positioning information display area. Is preferred.

According to the present invention, since the display of the display means can be changed, it is possible to make the display suitable for the information for displaying the positioning information display area and the time information display area, and it is easy for the user to grasp the information.
For example, when positioning information is displayed, numerical values of latitude and longitude can be displayed, or a map can be displayed and a mark indicating its position can be displayed. Can be displayed easily.
Similarly, when displaying time information, various types of time information such as year, month, sunday, hour, minute, and second can be displayed as appropriate, and a display that is easy for the user to grasp can be performed.

In the satellite signal receiving device of the present invention, when the time display mode is set, the display control means sets the time information display area as a normal display, and the positioning information display area is reversed from a normal display. By displaying in reverse, it is displayed that the time information display area is selected, and when the positioning display mode is set, the positioning information display area is set as normal display, and the time information display area is It is preferable to display that the positioning information display area is selected by using a reversed display that is reversed from the normal display.
According to the present invention, it is possible to grasp which one of the time display mode and the positioning display mode is selected according to the display state of the positioning information display area and the time information display area, so that the user can grasp the display mode easily and surely. it can.

In the satellite signal receiving apparatus of the present invention, the display means includes a movable pointer, and the display control means moves the pointer to display a time information display area when the time display mode is set. By instructing, it is displayed that the time information display area is selected, and when the positioning display mode is set, the positioning information display area is indicated by moving the pointer to indicate the positioning information display area. It is preferable to display that the information display area is selected.
According to the present invention, it is possible to grasp which one of the time display mode and the positioning display mode is selected according to the indication position of the pointer, so that the user can easily and reliably grasp the display mode.

A satellite signal receiving apparatus control method according to the present invention includes a receiving unit that receives a satellite signal transmitted from a position information satellite, a display unit that displays time information and positioning information, and an external operation member. And an operation detection step for detecting an operation of the external operation member, and a time for displaying time information on the display means when a time display mode selection operation is detected in the operation detection step. When the display mode is selected and the positioning display mode selection operation is detected, a display mode setting step for setting the positioning display mode to display the positioning information on the display means, and the time information is displayed on the display means. When the reception operation is detected in the operation detection step, the reception unit is controlled in a time adjustment mode in which the satellite signal is received and time adjustment processing is performed. A reception control step of controlling the receiving unit in a positioning mode for receiving the satellite signal and performing a positioning process when a receiving operation is detected in the operation detecting step while positioning information is displayed on the display means. And.
According to the present invention, it is possible to achieve the same effects as the satellite signal receiving apparatus.

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
The embodiments described below are preferred specific examples of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention is particularly limited in the following description. Unless otherwise stated, the present invention is not limited to these embodiments.

  FIG. 1 is a schematic view showing a wristwatch 1 with a GPS time correction device (hereinafter referred to as “GPS wristwatch 1”) as a timekeeping device with a time correction device according to the present invention, and FIG. 2 is a front view of the GPS wristwatch 1. It is. FIG. 3 is a schematic cross-sectional view of the GPS wristwatch 1, and FIG. 4 is a schematic diagram showing the main hardware configuration of the GPS wristwatch 1.

As shown in FIG. 2, the GPS wristwatch 1 includes a time display unit including a dial 2 and hands 3. The pointer 3 includes an hour hand 131, a minute hand 132, and a second hand 133.
The dial 2 is formed with a scale for indicating the time according to the hands 3 as in a general timepiece.
Further, as will be described later, the dial 2 is also provided with a scale for displaying the reception state level and the reception result by the second hand 133. In this embodiment, “Y” is set at the 10-second scale position, “N” at the 20-second scale position, “L” at the 40-second scale position, and “H” at the 50-second scale position. ing. “Y” is an abbreviation of “Yes”, “N” is “No”, “L” is “Low”, and “H” is “High”.
For this reason, in the present embodiment, the reception status display device that displays the reception status of the satellite signal includes the second hand 133 and the dial 2.

The time display unit is provided with small clocks 4 and 5 as two display units. The first small timepiece 4 that is the first display unit is arranged in the 10 o'clock direction of the dial 2 with respect to the rotation axis of the pointer 3. The second small timepiece 5 as the second display unit is arranged in the 6 o'clock direction of the dial 2 with respect to the rotation axis of the pointer 3.
Further, the GPS wristwatch 1 is provided with an A button 6, a B button 7 and a crown 8 as external operation members.

The first small timepiece 4 includes a first hand 141 and a first dial 142 on which a scale indicated by the first hand 141 is formed.
The second small timepiece 5 includes a second pointer 151 and a second dial 152 on which a scale indicated by the second pointer 151 is formed.

  The first dial 142 is divided into a first area 143 and a second area 144. That is, the first dial 142 is formed in a circular shape, and a vertical line passing through the center thereof, that is, a straight line along the direction connecting the 0 o'clock and 6 o'clock of the dial 2, It is divided into a right side of the first dial 142 and a 9 o'clock side of the dial 2 (the left side of the first dial 142).

The first area 143 is provided on the divided right side of the first dial 142 (3 o'clock side of the dial 2), and has a scale indicating the day of the week. In this embodiment, as shown in FIG. 2, “M” indicating Monday, “T” indicating Tuesday, “W” indicating Wednesday, and “Thursday” in the counterclockwise direction from the lower side of the first region 143. Scales of “T”, “F” indicating Friday, “S” indicating Saturday, and “S” indicating Sunday are formed. The day of the week may be easily determined by setting “S” on Saturday to blue and “S” on Sunday to red.
For this reason, in the first small timepiece 4, a time information display area is constituted by the first area 143.

The second region 144 is provided on the divided left side of the first dial 142 (9 o'clock side of the dial 2), and a scale indicating latitude is formed. In the present embodiment, as shown in FIG. 2, a scale of latitude “0” is set at the 9 o'clock position of the first dial 142, and the 12 o'clock position of the first dial 142 from the position (the boundary of each region) A scale of 0 to 90 degrees north latitude is set clockwise to (line), and a scale of 0 to 90 degrees south latitude is set counterclockwise to the 6 o'clock position of the first dial 142 (boundary line of each area). .
For this reason, in the first small clock 4, a positioning information display area is configured by the second area 144. Further, a map is displayed in the second area 144 so that it can be easily understood that the second area 144 is a positioning information display area. In particular, a latitude line is displayed on the map of the second area 144, and it can be easily grasped that the latitude information of the positioning information is displayed in the second area 144.
This map is provided to clearly indicate that the second area 144 is a positioning information display area, and the scale position of the latitude does not match the latitude of the displayed map. Also good.

The second dial 152 has a circumferential scale 153 formed thereon. The scale 153 is used both as a scale for a 24-hour hand and a scale indicating longitude. That is, a scale indicating longitude is described on the outer peripheral side of the scale 153, and a scale for a 24-hour hand is described on the inner peripheral side.
The scale indicating the longitude is set to a scale of 0 degree longitude at the 12 o'clock position of the second dial 152 (upper side in FIG. 2), and from the 12 o'clock position of the second dial 152 to the 6 o'clock position through A scale of 0 to 180 degrees west longitude is set until clockwise, and a scale of 0 to 180 degrees east longitude is set counterclockwise from the 12 o'clock position to the 6 o'clock position of the second dial 152. .
As for the scale for the 24-hour hand, the scale at 0 o'clock (24 o'clock) is set at the 12 o'clock position of the second dial 152, and the scale at 1-23 o'clock is set clockwise.

In the second dial 152, the scale indicating the time and the scale indicating the longitude are arranged concentrically, so that the positioning information display area and the time information display area are not separated in the second dial 152 and are integrated. It has become.
Further, in order to clearly indicate that longitude information is displayed among the positioning information, the second dial plate 152 displays a map with meridians displayed radially with the North Pole as the center.
The maps and scales displayed on the first dial plate 142 and the second dial plate 152 are formed by printing or the like.

Each of the small clocks 4 and 5 is switched between the time display mode and the positioning display mode by the display control unit 54 as will be described later.
When the time display mode is set, the first hand 141 of the first small clock 4 moves to the position indicating the day of the week in the internal time information in the first area 143. Further, the second hand 151 of the second small timepiece 5 uses the scale 153 as the scale of the 24-hour hand and moves to a position indicating the hour of the internal time information.
On the other hand, when the positioning display mode is set, the first pointer 141 of the first small clock 4 moves in the second region 144 to a position indicating the current latitude, which is the acquired positioning information. Further, the second pointer 151 of the second small clock 5 moves to a position indicating the current longitude that is the acquired positioning information.

The pointer 3 includes an hour hand 131, a minute hand 132, and a second hand 133, and is driven via a gear by a step motor (mechanical driving means) described later.
The first pointer 141 and the second pointer 151 are driven by gears by independent step motors.

The GPS wristwatch 1 receives satellite signals from a plurality of GPS satellites 15 orbiting the earth over a predetermined orbit to obtain the current position, acquire satellite time information, and obtain internal time information. It is configured so that it can be modified.
The GPS satellite 15 is an example of the position information satellite in the present invention, and a plurality of GPS satellites 15 exist above the earth. Currently, about 30 GPS satellites 15 orbit.

[Internal configuration of GPS wristwatch]
Next, the internal configuration of the GPS wristwatch 1 will be described.
As shown in FIG. 3, the GPS wristwatch 1 includes an exterior case 17 made of a metal such as SUS or titanium.
The exterior case 17 is formed in a substantially cylindrical shape, and a surface glass 160 is attached to the opening on the surface side of the exterior case 17 via the bezel 16. A back cover 26 is attached to the opening on the back side of the outer case 17. The back cover 26 is made of metal and formed in a ring shape, and a back glass 23 is attached to an opening at the center thereof.

Inside the exterior case 17, a step motor for driving the pointer 3, a step motor for driving the first pointer 141, a step motor for driving the second pointer 151, the GPS antenna 11, the battery 24, and the like are arranged.
A step motor for driving the hands 3 is a general one used for a timepiece including a motor coil 19, a stator (not shown), a rotor, and the like. This step motor drives the pointer 3 via a gear. Similarly, a step motor for driving the hands 141 and 151 is also a general one, and drives the hands 141 and 151 via gears.

The GPS antenna 11 is a patch antenna that receives satellite signals from a plurality of GPS satellites 15 orbiting the earth over a predetermined orbit. The GPS antenna 11 is arranged on the surface (back side) opposite to the time display surface of the dial 2 and is configured to receive radio waves that have passed through the front glass 160 and the dial 2.
For this reason, the dial 2 and the surface glass 160 are made of a material that transmits radio waves that are satellite signals transmitted from GPS satellites. For example, the dial 2 is made of plastic. The bezel 16 is made of ceramics in order to improve the reception performance of the satellite signal.

  The plane position of the GPS antenna 11 (the position in the direction along the surface of the dial 2) is from 12:00 to 1 o'clock with respect to the rotation axis of the pointer 3 on the dial 2, as shown in FIG. Has been placed. The GPS antenna 11 does not overlap with the second hand 133 when the second hand 133 moves to each position of 0, 10, 20, 40, 50 seconds in order to indicate a reception state level or the like during reception. Placed in position. That is, the size and arrangement position of the GPS antenna 11 and the position for instructing the reception state level by the second hand 133 are set so that the second hand 133 does not affect reception at the GPS antenna 11.

A circuit board 25 is disposed on the back cover side of the GPS antenna 11, and a battery 24 is disposed on the back cover side of the circuit board 25.
The circuit board 25 has various circuit elements (IC and the like) such as a receiving circuit 18 for processing a signal received by the GPS antenna 11 and a control unit 20 for controlling a step motor for driving the pointer 3 as will be described later. Is attached. The receiving circuit 18 and the control unit 20 are driven by power supplied from the battery 24.

The battery 24 is a secondary battery such as a lithium ion battery. And the magnetic sheet 21 is arrange | positioned under the battery 24 (back cover side), and the coil 22 for charging is arrange | positioned through the magnetic sheet 21. As shown in FIG. Therefore, the battery 24 can be charged with electric power from an external charger by electromagnetic induction by the charging coil 22. Further, the magnetic sheet 21 can bypass the magnetic field. For this reason, the magnetic sheet 21 can reduce the influence of the battery 24 and can perform energy transmission efficiently. And the back glass 23 is arrange | positioned in the center part of the back cover 26 for electric power transfer.
The GPS wristwatch 1 is configured as described above.

[Circuit configuration of GPS wristwatch]
Next, the circuit configuration of the GPS wristwatch 1 will be described. As shown in FIG. 4, the GPS wristwatch 1 includes a time display device 45, a GPS device 40, and a time correction device 44, and has a configuration that also functions as a computer. As shown in FIG. 4, the time display device 45 and the GPS device 40 and the time adjustment device 44 partially overlap.

Hereinafter, each configuration shown in FIG. 4 will be described.
[Configuration of GPS device]
As shown in FIG. 4, the GPS wristwatch 1 includes a GPS device 40 that receives and processes satellite signals transmitted from the GPS satellite 15.
The GPS device 40 includes a GPS antenna 11, a filter (SAW) 31, and a receiving circuit 18. The filter (SAW) 31 is a band-pass filter and extracts a 1.5 GHz satellite signal. Therefore, the GPS device 40 constitutes the receiving unit of the present invention.

The receiving circuit 18 processes the satellite signal extracted by the filter, and includes an RF unit (Radio Frequency) 27 and a baseband unit 30.
The RF unit 27 includes a PLL circuit 34, an IF filter 35, a VCO (Voltage Controlled Oscillator) 41, an ADC (A / D converter) 42, a mixer 46, an LNA (Low Noise Amplifier) 47, an IF amplifier 48, and the like. .

The satellite signal extracted by the filter 31 is amplified by the LNA 47, mixed with the signal of the VCO 41 by the mixer 46, and down-converted to IF (Intermediate Frequency).
The IF mixed by the mixer 46 passes through an IF amplifier 48 and an IF filter 35 and is converted into a digital signal by an ADC (A / D converter) 42.

The baseband unit 30 includes a DSP (Digital Signal Processor) 39, a CPU (Central Processing Unit) 36, an SRAM (Static Random Access Memory) 37, and an RTC (Real Time Clock) 38. The baseband unit 30 is also connected with a crystal oscillation circuit with temperature compensation circuit (TCXO) 32, a flash memory 33, and the like.
The baseband unit 30 receives a digital signal from the ADC 42 of the RF unit 27, calculates a satellite signal based on the control signal, and can acquire satellite time information and positioning information.

The clock signal for the PLL circuit 34 is generated from a crystal oscillation circuit (TCXO) 32 with a temperature compensation circuit.
The RTC 38 generates time information on the receiver side in order to process satellite signals. The RTC 38 is incremented by the reference clock output from the TCXO 32.

[Configuration of time correction device]
The time adjustment device 44 includes the reception circuit 18, the control unit 20, and the drive circuit 43. The time correction device 44 constitutes a time information correction unit of the present invention.
The control unit 20 includes a storage unit 20 </ b> A and an oscillation circuit 20 </ b> B, and controls driving of the hands 3 by the GPS device 40 and the drive circuit 43. That is, the control unit 20 can control the reception operation of the GPS device 40 by sending a control signal to the reception circuit 18.
The storage unit 20A stores time data (satellite time information) obtained by the baseband unit 30 of the receiving circuit 18, positioning data, and reception results in each reception mode.

[Configuration of time display device]
The time display device 45 includes a control unit 20, a storage unit 20A, an oscillation circuit 20B, a crystal resonator 202, a drive circuit 43, a pointer 3, pointers 141, 151, and the like.
The storage unit 20A stores internal time information as current time information. The control unit 20 counts up the time data stored in the storage unit 20 </ b> A with a reference signal having a 1-second cycle, and simultaneously controls the display time of the hands 3. A reference signal having a period of 1 second is generated by dividing the oscillation frequency of the crystal resonator 202 by the oscillation circuit 20B.
In addition, when the satellite time information obtained by the baseband unit 30 is stored in the storage unit 20A and the internal time information is updated, the control unit 20 is corrected to the current time information indicated by the hands 3. A difference from the internal time information is calculated, and the stepping motor is driven by the drive circuit 43 so that the hands 3 move by the time difference, and the hands 3 are controlled to indicate the corrected time.

Further, the drive circuit 43 is configured to drive the step motors of the first pointer 141 and the second pointer 151.
In FIG. 4, an EPD driving circuit 49 may be provided as a configuration included in the time adjustment device 44 and the time display device 45. In particular, when the dials 142 and 152 of the first small clock 4 and the second small clock 5 are configured by an EPD display device as in the second embodiment described later, the EPD drive circuit 49 displays the EPD. Drive control of the device. Therefore, in the present embodiment, as in the second embodiment, the circuit configuration can be used even when the EPD display device is provided. However, when incorporated in the GPS wristwatch 1 that does not include the EPD display device, naturally this circuit configuration is used. A circuit that does not include the EPD driving circuit 49 may be used.

The GPS wristwatch 1 having such a configuration is driven by electric power supplied from a rechargeable secondary battery 24.
That is, the charging coil 22 charges the secondary battery 24 with power through the charging control circuit 28. The secondary battery 24 supplies driving power to the time adjustment device 44 and the like via the regulator 29.
As described above, the timepiece mechanism in the present embodiment is a so-called electronic timepiece.

[System configuration of satellite signal receiver]
Next, the system configuration of the satellite signal receiving apparatus of the present invention will be described with reference to FIG. FIG. 5 is a functional block realized mainly by a program executed in the control unit 20.
That is, the control unit 20 includes reception control means 51, reception state determination means 52, reception state display control means 53, display control means 54, positioning calculation means 55, information time correction means 56, and operation detection means 57.

The reception control means 51 controls reception processing using the GPS device 40 as will be described later. The reception state determination unit 52 performs processing for determining the reception state level. The reception state display control means 53 performs display control of the reception state level. The display control means 54 performs display control in each of the small clocks 4 and 5, specifically, drive control of the hands 141 and 151. The positioning calculation means 55 performs a positioning calculation process for acquiring orbit information from the received satellite signal and calculating the current position of the GPS wristwatch 1. The information time correction means 56 performs processing for acquiring time information from the received satellite signal and correcting the time of the GPS wristwatch 1. The operation detection means 57 detects the operation of the A button 6, the B button 7 and the crown 8 which are external operation members.
The processing contents of these means will be described in detail in the following description of the receiving operation.

Next, the operation of the GPS wristwatch 1 will be described with reference to the operation explanatory diagram of FIG. 6 and the flowchart of FIG.
First, at the start of operation such as when the GPS wristwatch 1 is turned on, the display control means 54 sets “time display mode” as an initial setting of the display mode (ST1).
Next, the operation detection means 57 starts an operation detection process for detecting whether or not the user has pressed the A button 6 and the B button 7 (ST2).

  Then, the operation detection means 57 determines whether or not there has been a display mode switching operation (ST3), whether or not there has been a reception operation (ST4), and whether or not there has been a reception result display operation (ST5). I do. That is, the operation detection means 57 performs the determination of ST4 when it is determined “No” in ST3, and performs the determination of ST5 when it is determined “No” also in ST4. If “No” is also determined in ST5, the display control means 54 determines whether or not to end the control (ST6). Here, the case where the control is terminated is a case where the battery voltage of the GPS wristwatch 1 is lowered or the power is turned off. Therefore, in the normal use state, it is determined as “No” in ST6, and the operation detection means 57 continues the operation detection process for the buttons 6 and 7 in ST3, ST4, and ST5.

[Display mode switching operation]
When it is detected in ST3 that the display mode switching operation has been performed, the display control means 54 performs display mode switching processing for the small clocks 4 and 5 (ST7). In the present embodiment, as shown in FIG. 6, the display mode switching operation is performed by the user pressing the B button 7.
Therefore, as shown in FIG. 6, when the user presses the B button 7, the display control means 54 displays the display of each of the small clocks 4 and 5 in the time display mode shown in FIG. Switch to the positioning display mode shown in B). The display mode is switched every time the B button 7 is pressed. That is, the display control means 54 switches the display of the small clocks 4 and 5 to the “positioning display mode” when the B button 7 is pressed in the “time display mode”, and the B button when in the “positioning display mode”. When 7 is pressed, the display of the small clocks 4 and 5 is switched to the “time display mode”.

In the time display mode, the display control unit 54 moves the first hand 141 to the scale position indicating the current day of the week in the first area 143. Moreover, the display control means 54 moves the 2nd pointer 151 to the scale position which shows the present time.
For example, in FIG. 6A, the first pointer 141 indicates a scale indicating “Saturday”, and the second pointer 151 indicates a scale indicating “10 o'clock”.

In the positioning display mode, the display control unit 54 refers to the positioning information acquired in the previous positioning reception process and stored in the storage unit 20A, moves the first pointer 141 to a position corresponding to the latitude, The second pointer 151 is moved to a position corresponding to the longitude.
For example, FIG. 6B shows a case in which positioning information such as 35.69 degrees north latitude and 139.70 degrees east longitude is stored. The latitude is indicated by the first pointer 141, and the longitude is indicated by the second pointer 151. Have been instructed.

[Receive operation]
When it is detected in ST4 that a reception operation has been performed, the reception control means 51 performs reception control. In the present embodiment, it is determined that the receiving operation has been performed when the A button 6 is pressed for a predetermined operation, specifically, for 3 seconds or longer.
The reception control means 51 confirms the current display mode. That is, the reception control means 51 checks whether or not it is currently in the time display mode (ST8).

[Positioning mode reception processing]
Here, when the current display mode is the positioning display mode, the reception control means 51 performs positioning mode reception processing (ST9).
The positioning mode reception process is the same as the positioning reception process in a general GPS device. That is, the reception control unit 51 activates the GPS device 40, searches for the GPS satellites 15, and confirms whether three or more GPS satellites 15 can be captured. When three or more GPS satellites 15 can be captured, the reception control means 51 acquires ephemeris data necessary for the positioning process from the satellite signals from each GPS satellite 15 and performs the positioning process.

Here, GPS satellite signals will be described with reference to FIGS.
As shown in FIG. 8A, a signal is transmitted from each GPS satellite 15 in units of one frame data (30 seconds). This 1-frame data has 5 subframe data (1 subframe data is 6 seconds). Each subframe data has 10 words (1 word is 0.6 seconds).

The head word of each subframe data is a TLM word storing TLM (Telemetry word) data. As shown in FIG. 8B, preamble data is stored at the head of the TLM word. ing.
The word following the TLM is a HOW word in which HOW (hand over word) data is stored, and at the top of the word is the GPS time information (satellite) of TOW (Time of Week, also referred to as “Z count”). Time information) is stored.
The GPS time information displays the elapsed time from 0 o'clock every Sunday in seconds, and returns to 0 at 0 o'clock on the next Sunday. In other words, the GPS time information is information in seconds indicated every week from the beginning of the week, and the elapsed time is a number expressed in units of 1.5 seconds, and is also referred to as Z count or Z count data. The GPS device 40 is a clue to know the current time.

Further, the word data of the subframe 1 shown in FIG. 8A includes satellite correction data and the like. The satellite correction data includes week number data (WN), that is, calendar data, a word (WORD3) in which satellite health condition information (SVhealth) data is stored, and the like.
The week number data is information representing a week including the current GPS time information. That is, the starting point of the GPS time information is January 6, 1980, 00:00:00 in UTC (Universal Coordinated Time), and the week starting on this day is the week number 0. And the receiving side is the structure which can acquire GPS time information by acquiring the data of a week number and elapsed time (second).
The week number data is data that is updated on a weekly basis.
Therefore, if the week number data is once acquired on the receiving side and the elapsed time from the time when the week number data was acquired is counted, it is acquired without acquiring the week number data again. The current week number data of the GPS satellite is known from the week number data and the elapsed time. Therefore, if the Z count data is acquired, the current GPS time can be roughly estimated. For this reason, in general, by setting only the Z count data, it is possible to reduce the reception operation time on the receiving side, thereby reducing power consumption.

  Also, depending on the situation, the acquired week number data may be erased, or the elapsed time from the time acquired from the week number data may deviate, or a certain period may elapse after the week number data is acquired. If the week number data is also received from the satellite signal from the GPS satellite 15 again, the receiving side will be notified from the newly received week number data and the Z count data. The GPS time can be acquired.

As shown in FIG. 8A, the navigation message included in the signal from the GPS satellite is data having frame data (main frame configuration) of 50 bps and a total number of 1500 bits as the main frame.
The main frame data is divided into five subframe data of 300 bits (300 bits).
One frame data corresponds to 30 seconds. Accordingly, one of the subframe data is data corresponding to 6 seconds. As described above, the first two words of each subframe data include ZLM (TOW) data of TLM word and HOW word. The Z count data starts from subframe 1 and is every 6 seconds for each subframe data. That is, subframe 1 to subframe 5 have Z count (TOW) data of TLM words and HOW words. The Z count (TOW) data is time information of the next subframe data. For example, the Z count data of subframe 1 is the time data of subframe 2.

As shown in FIG. 8, the navigation message, which is a satellite signal from the GPS satellite 15, includes preamble data, HOW word TOW, subframe data, for example, satellite correction data including week number data and satellite health data. Ephemeris (detailed orbit information for each GPS satellite 15), almanac (general orbit information of all GPS satellites 15), and UTC data (such as global agreement time information). More specifically, the subframe data of the navigation message is from subframe 1 to subframe 5, and the frame data is composed of these five subframe data as one unit. The subframe data is composed of 1 to 10 word data as described above.
Therefore, HOW data, that is, Z count is transmitted every 6 seconds, whereas week number data (WN) and ephemeris are transmitted every 30 seconds.

Since the signal from the GPS satellite 15 is transmitted as described above, the GPS reception in the present embodiment is to make the phase synchronization with the C / A code from each GPS satellite 15.
That is, in order to acquire such frame data of the GPS satellite 15, the receiving side GPS device 40 needs to synchronize with the signal of the GPS satellite 15.
In this case, a C / A code (1023 chip (1 ms)) is used particularly for synchronization in units of 1 ms. This C / A code (1023 chip (1 ms)) is different for each of a plurality of GPS satellites 15 orbiting the earth and is unique.
Therefore, when a satellite signal of a specific GPS satellite 15 is received, it is received by generating a C / A code unique to any GPS satellite 15 from the GPS device 40 as a receiving unit and performing phase synchronization. Be able to.
When synchronized with the C / A code (1023 chip (1 ms)), the TLM word preamble data and HOW word of the subframe data can be received, and the Z count data of the HOW word can be acquired. The GPS device 40 can also acquire week number information (WN) data and satellite health condition information (SVhealth) data after acquiring the Z count (TOW) data of the TLM word and the HOW word.

  Then, it is possible to determine whether or not the acquired Z count data is reliable by performing a parity check. That is, it is possible to confirm correctness with the parity data after the TOW data of the HOW word. If an error is confirmed by the parity check, the Z count data can be regarded as having some abnormality and not used for time correction.

As described above, the frame data in FIG. 8 is an example of a frame information unit, and the subframe data is an example of a subframe data information unit, which is an example of a specific unit of a satellite signal. The Z count (TOW) data is an example of satellite time information of the position information satellite (GPS satellite 15). The week number information (WN) data is an example of week number information that is count information of elapsed time from the starting point of the satellite time information. The Z count data, week number (WN) data, TLM word, HOW word, etc. are examples of satellite signal information. The satellite health status (SVhealth) data is an example of location information satellite health information indicating the satellite status of the location information satellite.
The navigation message which is the satellite signal of the GPS satellite 15 is configured as described above.

  When the ephemeris acquisition process ends in the reception control means 51, the positioning calculation means 55 performs positioning calculation for obtaining its own position based on the ephemeris data of at least three GPS satellites 15. And the reception control means 51 will complete | finish a positioning reception process, if positioning calculation is completed.

[Time correction mode reception processing]
On the other hand, when the current display mode is the time adjustment mode, the reception control means 51 performs reception processing in the time adjustment mode (ST10).
The reception process in the time correction mode is the same as the reception process in the positioning mode except that it is only necessary to acquire the Z count data of one satellite.
That is, the reception control means 51 activates the GPS device 40, searches for the GPS satellite 15, and confirms whether at least one GPS satellite 15 can be captured. If one or more GPS satellites 15 can be captured, the reception control means 51 acquires the Z count data necessary for time correction processing from the GPS satellites 15 in the satellite signal.
When the reception control means 51 can acquire the Z count data, the reception process is terminated.

[Display reception status]
While the positioning reception process ST9 and the time reception process ST10 are being performed, the GPS wristwatch 1 shifts to the reception display mode as shown in FIG. In this reception display mode, the reception state determination unit 52 determines the reception state based on the SNR and the like of the received satellite signal, and the reception state display control unit 53 determines based on the reception state determined by the reception state determination unit 52. The second hand 133 is moved and displayed.
That is, when the reception state display control means 53 determines that the reception level is low based on the signal strength (SNR) of the reception signal, etc., the reception state display control means 53 moves the second hand 133 to indicate “L” at the 8 o'clock position of the dial 2. , Display that the reception level is low.
When the reception state display control means 53 determines that the reception level is high based on the signal strength (SNR) of the reception signal, etc., the reception state display control means 53 moves the second hand 133 to indicate “H” at the 10 o'clock position of the dial 2. , Display that the reception level is high.

[Time correction processing]
When each reception process of the positioning reception process ST9 and the time reception process ST10 is completed and the reception is successful, the information time correction unit 56 stores the internal time stored in the storage unit 20A based on the received Z count information. The data is corrected (ST11). Since the Z count data is acquired not only in the time reception process ST10 but also in the positioning reception process ST9, the internal time data correction process is performed as in the positioning reception process ST9.

At this time, the information time correction means 56 adds the UTC offset (currently +14 seconds) and the time difference to the received GPS time (Z count), and calculates the current time reflecting the time difference.
That is, if the GPS time is corrected with the UTC offset, UTC (Coordinated Universal Time) is obtained, and if the time difference from UTC is added, the current time (local time) at the current location can be calculated.

When the positioning information of the current location is obtained in the positioning reception process ST9, the time difference is referred to a database indicating the relationship between the positioning information stored in the storage unit 20A and the time difference and corresponds to the acquired positioning information. Is stored in the storage unit 20A as the time difference of the current location.
On the other hand, when the time information is acquired in the time reception process ST10, the current time of the current location is calculated using the time difference stored in the storage unit 20A when the previous positioning reception process ST9 was performed.

[Display correction]
When the reception processes ST9 and ST10 are completed and the time correction process ST11 is performed, the display control means 54 corrects the display of the hands 3 and the small clocks 4 and 5 (ST12).
At this time, in the time display mode, the display control unit 54 corrects the display time by the hands 3 based on the current time calculated by the information time correction unit 56 and starts normal hand movement. Next, the first hand 141 and the second hand 151 are moved based on the corrected time information.
On the other hand, in the positioning display mode, the display control means 54 corrects the display time by the pointer 3 based on the current time calculated by the information time correction means 56, and starts normal hand movement. Next, the first pointer 141 and the second pointer 151 are moved based on the acquired positioning information.

[Receiving result display operation]
When it is detected in ST5 that a reception result display operation has been performed, the reception state display control means 53 displays the previous reception result using the second hand 133 (ST13). In the present embodiment, it is determined that the reception result display operation has been performed when the A button 6 is pressed for 3 seconds or less.
Here, the reception control unit 51 stores, in the storage unit 20A, result data indicating whether the reception is successful or unsuccessful for each mode when each reception process is performed in the positioning mode and the time adjustment mode.

  For this reason, the reception state display control means 53 reads the reception result data in the time correction mode stored in the storage unit 20A when the reception result display mode is entered while the time display mode is selected. When the reception is successful, the second hand 133 is moved to the “Yes” position (10-second position), and when reception is unsuccessful, the second hand 133 is moved to the “No” position (20-second position).

  On the other hand, when the reception state display control means 53 shifts to the reception result display mode in the state where the positioning display mode is selected, the reception state display control means 53 reads the reception result data of the positioning mode stored in the storage unit 20A, and when reception is successful. Moves the second hand 133 to the “Yes” position (10-second position), and in the event of reception failure, moves the second hand 133 to the “No” position (20-second position).

When the A button 6 is pressed once in these reception result display states, the original normal display state is restored.
In addition, after shifting to the reception result display state, it may be set to automatically return to the original normal display state when a predetermined time, for example, 5 seconds elapses.
Furthermore, in the present embodiment, the normal display state is restored after the reception process ends, but control may be performed so as to immediately shift to the reception result display mode after the reception process ends.

According to this embodiment, there are the following effects.
(1) When the user performs a reception operation, time reception processing is performed if the small clocks 4 and 5 are set to the time display mode, and positioning reception processing is performed if the small clocks 4 and 5 are set to the positioning display mode. Therefore, the user indicates which of the small clocks 4 and 5, particularly the first pointer 141 of the small clock 4 indicates the first area (time information display area) 143 or the second area (positioning information display area). By simply confirming, it is possible to easily determine in which mode the reception processing is performed.
For this reason, the convenience for the user can be improved, and the user can easily and reliably perform the reception operation in the desired reception mode.

(2) Since the user does not make a mistake in the selection of the reception mode, the positioning reception process that consumes power can be reliably performed only when necessary. For this reason, there is no intention to perform time reception processing, and positioning reception processing will not be performed by mistake, and power consumption will not be wasted due to erroneous operation. In the apparatus, the duration can be increased and the convenience can be improved.

(3) Furthermore, on the first dial 142, the first area 143 displays English letters indicating the day of the week, and the second area 144 displays a map. It is a display area, and it can be easily grasped that the second area 144 is a positioning information display area.
In addition, a map with latitude lines is displayed in the second area 144 of the first small clock 4, and a map with radial meridians with the North Pole as the zenith is displayed in the second small clock 5. Therefore, the user can easily grasp that the latitude information is displayed on the first small clock 4 and the longitude information is displayed on the second small clock 5.
For this reason, the GPS wristwatch 1 can be easily grasped and has good operability.

(4) Since the reception state level and the reception result are displayed using the second hand 133, a special mechanism or display for displaying the reception state level can be omitted. For this reason, the number of parts of the GPS wristwatch 1 can be reduced, the cost can be reduced, the design of the watch can be simplified, and the design can be improved.

(5) Since the A button 6 and the B button 7 are provided, the display mode switching operation is performed by pressing the B button 7, and the reception operation is performed by pressing the A button 6. In this respect, the operability can be improved.

[Second Embodiment]
FIG. 9 shows a second embodiment of the present invention. In the following embodiments, the same or similar configurations as those of the above-described embodiments are denoted by the same reference numerals, and description thereof is omitted or simplified.

  In the second embodiment, the first dial 142 and the second dial 152 of each of the small clocks 4 and 5 are configured by a display panel capable of displaying characters and images. As this display panel, a general liquid crystal display panel can be used, but in this embodiment, an EPD (Electrophoretic Display) used for electronic paper or the like is used. If a display device with a memory property such as EPD that does not require or requires very little power to maintain display is used, it is effective in reducing power consumption. The EPD is driven and controlled by the EPD driving circuit 49 shown in FIG.

And in 2nd Embodiment, since the 1st dial plate 142 and the 2nd dial plate 152 are comprised by display panels, such as EPD, the scale and map display of time information and positioning information can be changed. For this reason, an appropriate display according to the information to be displayed can be performed.
For example, in the first embodiment, since the day area scale is formed in the first area 143, only day information can be displayed, but the contents of the scale are instructed to indicate other time information, for example, the date. It is also possible to switch to the display of other time information by setting the scale for this purpose.
Similarly, a scale at 24:00 is formed in the second region 144, but the scale can also be switched to display of other time information by setting the scale to indicate year, month, sunday and the like.

Moreover, in 2nd Embodiment, the map and scale of the 1st area | region 143 and the 2nd area | region 144 can also be changed into the thing according to the acquired positioning information. For example, if the obtained positioning information is the United States, it is easier for the user to understand the current position by changing the map of the first region 143 to a map that displays the American continent. Furthermore, if the latitude scale and the actual map position are displayed so as to match, the current position can be more easily understood.
Similarly, when the current position is also located in the southern hemisphere, the map of the second region 144 can be more easily grasped by displaying the map in the southern hemisphere centered on the South Pole.

  According to the second embodiment, since the display of each of the first dial plate 142 and the second dial plate 152 can be changed in addition to the function and effect of the embodiment, a scale or map suitable for the information to be displayed can be obtained. It can be displayed, making it easier for users to understand the information.

[Third Embodiment]
FIG. 10 shows a third embodiment of the present invention.
In the third embodiment, a map 81 is written on a dial of a clock (not shown), and rotary hands 82 and 83 are arranged along the upper edge. The map 81 is a world map, and an existing projection can be used as appropriate. The map 81 is not limited to the mirror projection centering on Japan, and other projections may be used.
The map 81 may be fixedly formed on the surface of the dial by means such as engraving or printing, or may be displayed on a display device such as an EPD.

  The hands 82 and 83 have rotating shafts 82A and 83A, and can be rotated along the surface of the dial plate using these as axes. These hands 82 and 83 are driven by a step motor and a gear train for driving the hands 82 and 83 in the same manner as a normal hour / minute / second hand, and are driven and controlled by the display control means 54 as in the first embodiment. .

  The dial has a scale for displaying time information in a different area from the map 81. In the present embodiment, a scale 85 that indicates the month from January to December is provided as a scale that is indicated by the pointer 82, and a scale 86 that indicates the days from 1 to 31 is provided as a scale that is indicated by the pointer 83. Is provided.

In the third embodiment, when the time display mode is selected, the display control unit 54 refers to the current date information, moves the pointer 82 to a position indicating the current month on the scale 85, and displays the current date on the scale 86. The pointer 83 is moved to a position for indicating the day of the day.
On the other hand, when the positioning display mode is selected, the display control means 54 refers to the stored positioning information, and the intersections of the hands 82 and 83 are positioned on the map 81 as shown by the one-dot chain line in FIG. The hands 82 and 83 are moved so as to indicate the latitude and longitude points of the information.

  Accordingly, since the positions of the hands 82 and 83 are different between the time display mode and the positioning display mode, the user can easily grasp the current display mode. When the operation detecting means 57 detects that the reception operation has been performed, the reception processing is performed in the time correction mode in the time display mode, as in the first embodiment, and the positioning display is performed. When the mode is selected, the reception process is performed in the positioning mode.

Also in such 3rd Embodiment, there can exist an effect similar to the said 1st Embodiment.
Furthermore, since the position on the map 81 can be instructed at the intersection of the hands 82 and 83 when instructing the positioning information, the current location can be easily determined even when the numerical values of latitude and longitude are indicated on the scale. I can grasp it.

[Fourth Embodiment]
FIG. 11 shows a fourth embodiment of the present invention.
The fourth embodiment is different from the third embodiment in that calendar information 87 is displayed above the map 81 and the current date is indicated at the intersection of the hands 82 and 83 in the time display mode.
Further, since the calendar information 87 is changed every month, at least the area where the calendar information 87 is displayed is configured by a display device such as an EPD. Therefore, although not shown in FIG. 11, year and month information may be displayed together with the calendar information 87.

  Also in the fourth embodiment, it is possible to easily grasp whether the time display mode or the positioning display mode is selected based on the positions of the hands 82 and 83. Therefore, the same operational effects as those of the above embodiments can be obtained.

[Fifth Embodiment]
FIG. 12 shows a fifth embodiment of the present invention.
The GPS wristwatch 1 of the fifth embodiment includes a pointer 91 provided coaxially with the hour hand 131, the minute hand 132, and the second hand 133. The pointer 91 is driven independently of the other pointers 131 to 133 through a step motor and a wheel train by the drive control of the display control means 54.

The upper half area of the dial 2 of the GPS wristwatch 1 is a time information display area 92, and the lower half area is a positioning information display area 93.
In the time information display area 92, alphabets indicating days of the week are displayed as scales 94 indicating at least one type of time information of year, month, day, hour, minute, and second. The scale 94 is arranged in an arc shape with the rotation axis of the pointer 91 as the center so that it can be indicated by the pointer 91.

In the positioning information display area 93, a map 95 indicating the time zone is displayed. The map 95 displays a line that divides the time zone radially from the rotation axis of the pointer 91. Each line is displayed at intervals where the crossing angle is 7.5 degrees, and each time zone is displayed in an area sandwiched between two lines.
That is, the time zones of UTC + 1 to UTC + 12 are divided and displayed by lines displayed in the area from 6 o'clock to 3 o'clock in the dial plate 2.
Further, the time zones of UTC ± 0 to UTC-11 are divided and displayed by the lines displayed in the area from 6 o'clock to 9 o'clock on the dial.
Each line corresponds to a latitude line indicating east longitude and west longitude. The map 95 is also described so that each area on the map substantially matches the time zone.

Also in the fifth embodiment, when the time display mode is set, the display control means 54 moves the hands 91 to the time information display area 92 and instructs the scale 94 according to the current day of the week.
When the positioning display mode is set, the display control unit 54 moves the pointer 91 to the positioning information display area 93, confirms the time difference corresponding to the stored positioning information, and according to the time difference. A time zone on the map 95 is indicated by a guideline 91.

Also in the fifth embodiment, whether the time display mode or the positioning display mode is selected can be easily grasped based on the position of the pointer 91. Therefore, the same operational effects as those of the above embodiments can be obtained.
Further, since the time zone corresponding to the current location is indicated on the map by the guide 91 as the positioning information, the user can easily grasp the time zone and the convenience can be improved.

[Sixth Embodiment]
FIG. 13 shows a sixth embodiment of the present invention.
In the sixth embodiment, similarly to the second embodiment, the first dial plate 142 and the second dial plate 152 are configured by a display device such as an EPD.

In the first area 143 and the second area 144 of the first dial 142, information is displayed using the point that the first dial 142 is configured by a display device. Note that the display control means 54 controls the display devices of the first dial plate 142 and the second dial plate 152 together with the control of the first pointer 141 and the second pointer 151.
For example, the first area 143, which is the time information display area on the first dial 142, does not indicate the scale with the first pointer 141 as in the above-described embodiment, but is at least one of year, month, day, day, hour, minute, and second. One piece of information is displayed directly with numbers and letters. In FIG. 13, a number “10” indicating October as month information and a character “Mon” indicating Monday as day information are displayed.
Therefore, when the time display mode is set, the first pointer 141 is moved to the first area 143 side by the display control means 54 to indicate that the current time display mode is selected. Since no scale is formed, the time information is not instructed directly by the first hand 141.
Further, when the date is changed and the month information or the day information is changed, the display control unit 54 controls the display device to change the information displayed in the first area 143.

The second area 144, which is the positioning information display area on the first dial 142, also has no scale displayed, and the map displayed by the display control means 54 can be changed. For this reason, for example, by displaying a latitude line on the map displayed in the second region 144, changing the scale of the map as appropriate, and indicating the latitude line indicating the latitude of the positioning information at the tip of the first pointer 141, The latitude information may be intuitively grasped without instructing the scale.
At this time, with reference to the longitude of the positioning information, the map display may be changed so that the position of the longitude is displayed near the tip of the first pointer 141. If comprised in this way, there exists an advantage which can roughly grasp | ascertain a present location only by the indication position of the 1st pointer | guide 141 in the 2nd area | region 144. FIG.

Furthermore, the second dial plate 152 is provided with a fan-shaped time information display area 155 occupying an area of ¼ and a positioning information display area 156 composed of other portions.
In the time information display area 155, at least one information of year / month / day / day / hour / second is directly displayed in numbers or characters. In FIG. 13, a number “31” indicating the 31st day, which is the day information, is displayed.
In the positioning information display area 156, a map centered on the North Pole is displayed as in the first embodiment.

The display of these time information display area 155 and positioning information display area 156 may be changed according to the information to be displayed.
For example, when the positioning information indicates a point in the southern hemisphere, the map displayed in the positioning information display area 156 may be changed to one centered on the South Pole. In FIG. 13, the time information display area 155 is provided in the range of 0 to 90 degrees west longitude. However, when the longitude of the positioning information is in the range of 0 to 90 degrees west longitude, What is necessary is just to change a display area to another part and to display a map in the range of 0 to 90 degrees west longitude.
Further, the map scale may be changed by referring to the latitude information so that the position where the positioning is indicated is indicated at the tip portion indicated by the second pointer 151 in the positioning information display area 156. Also in this case, there is an advantage that the present location can be roughly grasped only by the indicated position of the second pointer 151 in the positioning information display area 156.

Also in the sixth embodiment, whether the time display mode or the positioning display mode can be easily determined from the positions of the first hand 141 and the second hand 151. Therefore, the same operational effects as those of the above embodiments can be obtained.
Furthermore, since the first dial plate 142 and the second dial plate 152 are configured by a display device such as EPD, the displayed map and time information can be changed as appropriate. For this reason, the display suitable for the display of each information can be performed and the user can grasp | ascertain information easily.

[Seventh Embodiment]
FIG. 14 shows a seventh embodiment of the present invention.
In the first embodiment, a scale is formed around the first dial 142 and the second dial 152 in the dial 2, but the seventh embodiment is configured without providing a scale on the dial 2 side. It is a thing.
In this case, since the time information display area and the positioning information display area can be set only by the first dial 142 and the second dial 152, when using a dial on which a map or scale is displayed by printing or the like, In addition, when changing the display of each area, it is only necessary to replace the dials 142 and 152, and the dial 2 can be used together, so there is an advantage that versatility can be improved.

  If the display of each display area can be changed by exchanging the dials 142 and 152, for example, a map corresponding to the country in which the GPS wristwatch 1 is sold, or time information displayed on the small clocks 4 and 5 is displayed. The GPS wristwatch 1 with various variations can be manufactured simply by changing the control contents of the dials 142 and 152 and the display control means 54.

Also in the seventh embodiment, whether the time display mode or the positioning display mode can be easily grasped based on the positions of the first hand 141 and the second hand 151. Therefore, the same operational effects as those of the above embodiments can be obtained.
Further, by exchanging the first dial plate 142 and the second dial plate 152, various variations of the GPS wristwatch 1 can be manufactured, and the GPS wristwatch 1 according to the needs of the user can be provided at low cost.

[Modification]
The present invention is not limited to the above embodiments.
For example, the hands 141, 151, 82, 83, 91 for instructing the time display mode or the positioning display mode are not limited to actual mechanical hands, but the time information display area and the positioning information display area are EPD or the like. In the case of a display device, a pointer based on an image displayed on the display device may be used.
In addition, when the positioning information display area is configured by a display device, a map is displayed in the positioning information display area, and a mark is displayed at a position corresponding to the acquired positioning information, so that the positioning information can be intuitively displayed. It may be displayed so that it can be grasped.

  Furthermore, when the time information display area and the positioning information display area are configured by a display device such as an EPD, the means for selecting each display area and displaying the mode is not limited to that according to the instruction of the pointer. The selected display area may be normal display (positive), and the non-selected display area may be reversed display (negative). In addition, the display area that is not selected may not be displayed itself, but may be controlled to display only the selected display area, or the selected display area may be controlled to blink. In short, various display effects may be used to perform control so that the user can grasp which of the display areas is selected.

  In each of the embodiments using the small clocks 4 and 5, the latitude is displayed on the first small clock 4 and the longitude is displayed on the second small clock 5. On the contrary, the longitude is displayed on the first small clock 4. And the latitude may be displayed on the second small clock 5.

  Further, in each of the embodiments using the small clocks 4 and 5, the setting state of the time display mode or the positioning display mode is displayed on one of the first small clocks 4 and 5, and the other of the first small clocks 4 and 5 is displayed. 2 may be used to display a reception level during reception processing, a progress rate of reception processing, a reception result, and the like.

  Moreover, although the above-mentioned embodiment demonstrated the GPS satellite as an example of a position information satellite, not only a GPS satellite but a Galileo (EU), GLONASS (Russia), Hokuto (China) as a position information satellite of this invention. Other global navigation satellite systems (GNSS), etc., or position information satellites that transmit satellite signals including time information such as geostationary satellites such as SBAS and quasi-zenith satellites may be used.

  The satellite signal receiving apparatus of the present invention is not limited to the wristwatch 1 and may be applied to various watches such as a pocket watch, a mobile phone, a digital camera, various portable information terminals, a navigation system, and the like.

It is the schematic which shows the wristwatch with GPS of 1st Embodiment. It is a front view of the wristwatch with GPS of FIG. It is a schematic sectional drawing of the wristwatch with GPS of FIG. It is a block diagram which shows the main hardware structures etc. inside the GPS wristwatch of FIG. It is a block diagram which shows the structure of the control part of 1st Embodiment. It is explanatory drawing explaining the mode switching operation by button operation of 1st Embodiment, and the display switching state of receiving operation. It is a flowchart which shows operation | movement of the control part of 1st Embodiment. It is explanatory drawing for demonstrating the structure of a GPS satellite signal. It is a schematic sectional drawing of the wristwatch with GPS of 2nd Embodiment. It is a figure which shows the time information display area and positioning information display area of 3rd Embodiment. It is a figure which shows the time information display area and positioning information display area of 4th Embodiment. It is a front view of the wristwatch with GPS of 5th Embodiment. It is a figure which shows the dial part of the wristwatch with GPS of 6th Embodiment. It is a figure which shows the 1st dial plate of 7th Embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... GPS wristwatch, 2 ... Dial, 3 ... Hand, 4 ... 1st small clock, 5 ... 2nd small clock, 6 ... A button, 7 ... B button, 11 ... GPS antenna, 20 ... Control part, 20A ... Storage unit, 40 ... GPS device, 44 ... Time adjustment device, 45 ... Time display device, 51 ... Reception control means, 52 ... Reception state determination means, 53 ... Reception state display control means, 54 ... Display control means, 55 ... Positioning calculation means 56 ... Information time correction means 57 ... Operation detection means 81 ... Maps 82, 83 ... Hands, 85, 86 ... Scale, 87 ... Calendar information, 91 ... Hands, 92 ... Time information display area, 93 ... positioning information display area, 94 ... scale, 95 ... map, 133 ... second hand, 141 ... first pointer, 142 ... first dial, 143 ... first area, 144 ... second area, 151 ... second pointer, 152 ... second dial, 153 ... scale, 1 5 ... time information display area, 156 ... positioning information display area.

Claims (14)

A satellite signal receiving device comprising a receiving unit for receiving a satellite signal transmitted from a position information satellite, a display means for displaying time information and positioning information, and an external operation member,
Reception control means for controlling the operation of the receiving unit;
Display control means for controlling display of the display means;
An operation detecting means for detecting an operation of the external operation member,
The operation detection means is configured to detect at least an operation of selecting a time display mode, a selection operation of a positioning display mode, and a receiving operation on an external operation member,
The display control means includes
When a selection operation of the time display mode is detected by the operation detection means, the time display mode for displaying time information on the display means is set,
When a selection operation of the positioning display mode is detected by the operation detecting means, the positioning display mode for displaying positioning information on the display means is set,
The reception control means includes
When the reception information is detected by the operation detection means while the time information is displayed on the display means, the receiving unit is controlled in a time adjustment mode in which the satellite signal is received and time adjustment processing is performed. And
When receiving operation is detected by the operation detecting means while the positioning information is displayed on the display means, the receiving unit is controlled in a positioning mode in which the satellite signal is received and a positioning process is performed. A satellite signal receiving device. The satellite signal receiving device according to claim 1,
The display control means includes
When the time display mode is set, the display means displays at least one type of information such as year, month, Sunday, hour, minute, and second as time information,
When the positioning display mode is set, the display means displays a map and information indicating a position on the map as positioning information, or displays latitude and longitude as positioning information. Signal receiving device. The satellite signal receiving device according to claim 2,
The display means includes a pointer that can change the indicated position,
The display control means includes
When the time display mode is set, the time information is displayed by indicating the scale with at least one kind of information of the year, month, day, day, hour, minute, and second displayed on the display means,
When the positioning display mode is set, the positioning information is displayed by indicating the position on the map displayed on the display means with the pointer, or the latitude and longitude displayed on the display means are displayed. Positioning information is displayed by indicating a scale to be indicated with the pointer. A satellite signal receiving device. In the satellite signal receiving device according to any one of claims 1 to 3,
The display means includes a first display unit and a second display unit,
The first display unit includes a first pointer and a first dial,
The second display unit includes a second pointer and a second dial,
The first dial is divided into a first area and a second area, a scale indicating either year / month / day / day / hour / second is formed in the first area, and latitude or longitude is indicated in the second area. A scale is formed,
In the second dial, a scale indicating any one of year, month, Sunday, hour, minute and second and a scale indicating longitude or latitude are doubled,
The display control means includes
When the time display mode is set, the first hand of the first small clock is moved to indicate a scale indicating one of the current year, month, day, day, hour, minute, and second time of the second small clock. Move the pointer to indicate a scale indicating one of the current year, month, day, hour, minute,
When the positioning display mode is set, the first hand of the first small clock is moved, the scale indicating the latitude or longitude of the obtained positioning information is indicated, and the second hand of the second small clock is moved. Then, the satellite signal receiving apparatus is characterized by indicating a scale indicating the longitude or latitude of the positioning information. The satellite signal receiving device according to claim 4, wherein
A map is displayed in the second area and the second dial of the first dial. The satellite signal receiving device according to claim 5,
The first dial and the second dial are constituted by a memory display device,
The satellite signal receiving device, wherein the display control means is configured to be able to rewrite the map and scale. In the satellite signal receiving device according to claim 1 or 2,
The display means is a display board on which a map is displayed in part, and a scale or an array table for indicating at least one type of time information of year / month / day / hour / hour / second in an area outside the map; With multiple guidelines,
The display control means includes
If the time display mode is set, move the hands to indicate the time information scale or sequence table,
When the positioning display mode is set, the satellite signal receiving apparatus is characterized in that the pointer is moved based on the acquired positioning information to indicate a specific position on the map. The satellite signal receiving device according to claim 7,
The display control means includes
If the time display mode is set, move the hands to indicate the time information scale or arrangement table at the intersection of at least two hands or the tip of the hands,
When the positioning display mode is set, the satellite signal receiving apparatus is characterized in that the specific position on the map is indicated at an intersection of at least two pointers by moving the pointer. The satellite signal receiving device according to claim 7 or 8,
The display means includes a memory display device,
The satellite signal receiving apparatus, wherein the display control means is configured to be able to rewrite a map and time information displayed on the display means. In the satellite signal receiving device according to claim 1 or 2,
The display means includes a pointer, a positioning information display area for displaying positioning information, and a time information display area for displaying at least one type of time information of year, month, sunday, hour, minute, second,
In the positioning information display area, map information indicating a time zone is displayed,
In the time information display area, a scale for indicating the time information is displayed,
The display control means includes
If the time display mode is set, move the hands to the time information display area to indicate the scale,
When the positioning display mode is set, the satellite signal receiving apparatus is characterized in that the pointer is moved to the positioning information display area to indicate a time zone on the map. In the satellite signal receiving device according to claim 1 or 2,
The display means is composed of a display device whose display can be rewritten, a positioning information display area for displaying positioning information, and a time information display area for displaying at least one type of time information of year, month, sunday, hour, minute and second. With
The display control means includes
When the time display mode is set, it is displayed that the time information display area is selected, and the time information is displayed in the time information display area,
When the positioning display mode is set, the satellite information receiving apparatus displays that the positioning information display area is selected and displays positioning information in the positioning information display area. The satellite signal receiver according to claim 11, wherein
The display control means includes
When the time display mode is set, the time information display area is selected as a normal display, and the time information display area is selected as an inverted display reversed from the normal display. To show that
When the positioning display mode is set, the positioning information display area is selected by setting the positioning information display area as normal display and the time information display area as reversed display reversed from the normal display. A satellite signal receiving device, characterized in that The satellite signal receiver according to claim 11, wherein
The display means includes a movable pointer,
The display control means includes
If the time display mode is set, the time information display area is selected by moving the hands and indicating the time information display area,
When the positioning display mode is set, the satellite information reception is characterized in that the positioning information display area is selected by moving the pointer and indicating the positioning information display area. apparatus. A control method for a satellite signal receiving apparatus comprising: a receiving unit that receives a satellite signal transmitted from a position information satellite; a display unit that displays time information and positioning information; and an external operation member.
An operation detection step of detecting an operation of the external operation member;
In the operation detection step, when a time display mode selection operation is detected, the display unit is set to a time display mode for displaying time information, and when a positioning display mode selection operation is detected, the display is performed. A display mode setting step for setting a positioning display mode for displaying positioning information by means;
When a receiving operation is detected in the operation detecting step while the time information is displayed on the display means, the receiving unit is controlled in a time adjusting mode in which the satellite signal is received and time adjusting processing is performed. When the receiving operation is detected in the operation detecting step while the positioning information is displayed on the display means, the receiving unit controls the receiving unit in a positioning mode in which the satellite signal is received and the positioning process is performed. Control process;
A control method for a satellite signal receiving device.

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