JP2017173180A - Azimuth display device, azimuth display method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To always stably display a pointer even when a display range of the pointer pointing an azimuth is limited.SOLUTION: An azimuth display device comprises: display systems 36, 49, 50 and 26A for displaying a pointer 26A pointing an azimuth; a ROM 37 for storing an azimuth and a display position of the pointer 26A in association with each other; measurement systems 51, 52 and 41 for measuring a current azimuth; and a CPU 31 for acquiring a display position of the pointer 26A from the ROM 37 on the basis of the measurement result and determining the same, and if the determined display position of the pointer 26A is any end portion in an angular range, holding information indicating the side of the end portion while if a display position of the pointer 26A to be determined thereafter from the measurement result is any end portion in the angular range again, redetermining which one of the end portions in the angular range is a display position of the pointer 26A on the basis of held contents.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an azimuth display device, an azimuth display method, and a program.

  2. Description of the Related Art Conventionally, electronic devices including an azimuth meter, such as wristwatches, have been generally commercialized. (For example, Patent Document 1)

Japanese Patent Laid-Open No. 11-183658

  In an analog wristwatch with a compass function, when using the compass as a compass, for example, when using the second hand as a compass, move the second hand to point to the true north direction obtained by compass measurement. The measured azimuth can be displayed.

  By the way, consider a wristwatch equipped with a needle-type azimuth meter with a limited directional pointer range. For example, if there is a needle-type compass that has a fan-shaped pointer range with a central angle of 120 ° and whose central 60 ° angle direction is the 12 o'clock direction on the surface of the analog wristwatch, the direction pointer range Is -60 ° (azimuth 300 °) to 60 ° (azimuth 60 °).

  When the true north direction obtained by the azimuth measurement is within the above-mentioned pointer range -60 ° to 60 °, the needle may be moved so that the true north direction is pointed within the range. When the azimuth angle is out of the range −60 ° to 60 ° and the off azimuth angle is 180 ° to 300 °, −60 ° (azimuth 300 °), and the off azimuth angle is 60 ° to 180 °. If there is, the general display method is to move the needle to a position of 60 ° to indicate that the true north direction is out of the pointer range.

  However, when the amount of the azimuth angle deviating is substantially equal on the left and right sides, that is, when the true north azimuth is close to the 6 o'clock direction (azimuth 180 °) of the analog type clock face, It is conceivable that the needle position reciprocates between the −60 ° position and the 60 ° position and is unstable due to fluctuations in the arm of the user wearing the arm and vibrations of the vehicle on which the user is riding.

  In this case, not only the display position of the needle is not stable and difficult to read, but also the power consumption of the motor that drives the needle is large, and therefore it is required to suppress the unnecessary swing of the needle.

  The present invention has been made in view of the above circumstances, and the object of the present invention is to always display the needle in a stable state even when the display range of the needle indicating the azimuth is limited. An object is to provide a possible azimuth display device, a azimuth display method, and a program.

  One aspect of the present invention is a measuring means for measuring a current azimuth, a display means for displaying the azimuth by a reciprocating operation of a pointer, and a storage means for storing a correspondence relationship between the azimuth and the display position of the pointer as a table. And a position determining means for obtaining and determining the display position of the pointer on the display means from the table of the storage means based on the measurement result of the measuring means, and the position of the pointer determined by the position determining means. Table changing means for changing the table of the storage means when the display position is an end of the display means.

  According to the present invention, even when the display range of the needle indicating the azimuth is limited, it is possible to always display the needle in a stable state.

1A shows a plan configuration of a wristwatch according to an embodiment of the present invention, FIG. 1A is a plan view mainly showing a configuration of a dial, and FIG. 1B shows a configuration of an orientation display unit of FIG. The top view shown in detail. The figure which shows the correspondence table of the notation in the azimuth | direction display part which concerns on the same embodiment, the pointer position of 60 azimuth | direction conversion, and the azimuth | direction angle in a 360 degree azimuth | direction. The block diagram which shows the function structure of the electronic circuit in the wristwatch which concerns on the embodiment. The flowchart which shows the processing content in the north direction measurement mode by CPU which concerns on the same embodiment. 5 is a flowchart showing the contents of a subroutine of processing for calculating and moving the target position of the azimuth hand of FIG. 4 according to the embodiment. The figure which shows the example of the azimuth | direction display using the disk needle | hook concerning other embodiment of this invention.

Hereinafter, an embodiment in which the present invention is applied to an analog wristwatch will be described in detail with reference to the drawings.
FIG. 1A is a plan view mainly showing the configuration of the dial face of the analog wristwatch 10. In the figure, a bezel 12 is attached to the upper outer periphery of a watch case 11 constituting the watch body.

  Further, a crown 13 and two pushbutton switches 14 and 15 are attached to the outer periphery of the wristwatch 10 with the crown 13 interposed therebetween. At the time of measurement by an azimuth meter function to be described later, for example, the function is activated by operating the push button switch 14.

  Furthermore, the wristwatch case 11 is provided with a band attaching portion 16 for attaching a wristwatch band (not shown) in the 12 o'clock direction and the 6 o'clock direction of the wristwatch.

  A dial 21 is provided inside the watch case 11. On the dial 21, an hour hand 22, a minute hand 23, and a second hand 24 are coaxially mounted, and each hand is individually pivotably attached to display the current time and the like. Further, in the 3 o'clock direction of the dial 21, there is provided a date display section 25 for displaying the date on a part of the disk board below the dial 21 by a rectangular opening, and in the 6 o'clock direction of the dial 21, a fan is provided. A shape orientation display unit 26 is provided.

  FIG. 1B shows the azimuth display unit 26 (display means) in an enlarged manner. As shown in the figure, the azimuth hand 26 </ b> A rotates within a fan-shaped limited range of 60 ° on the left and right sides of the notation “0” of the dial 21 on the 12 o'clock direction and a central angle of 120 ° Provided to be free. The azimuth hand 26 </ b> A reciprocates in the fan-shaped range having a total central angle of 120 ° to represent the azimuth.

  FIG. 2 is a diagram showing a correspondence relationship table of the notation in the azimuth display unit 26, the pointer position converted to 60 azimuths (pointer display position), and the azimuth angle in the 360 ° azimuth.

  The notation in the azimuth display unit 26 indicates a numerical value when true north is located in the center, that is, the 12 o'clock direction of the dial 21, following the 360 ° azimuth. 300 "is written. That is, in a state in which the azimuth hand 26A points to the left end of the azimuth display unit 26, the true north direction is the left end of the azimuth display unit 26 or is located further left than the left end. Show.

  On the right end (end) of the azimuth display unit 26, “60 →” is written. That is, in a state in which the azimuth hand 26A points to the right end of the azimuth display unit 26, the true north direction is the right end of the azimuth display unit 26 or is located further to the right than the right end. Show.

  In the present embodiment, the case where the azimuth hand 26A indicates the azimuth in 6 ° steps (angle steps) as in the case of the second hand of a general analog quartz watch will be described as an example. A case where display is performed in 60 directions will be described.

  For example, when the azimuth hand 26A indicates “0” in 60 azimuths on the azimuth display 26 exactly equal to the 12 o'clock direction of the dial 21, “0 °” in 360 ° azimuth is the center. Since it is a representative value, as shown in the figure, the true north azimuth is in the range of “357 °” to “2 °” over 360 ° azimuth and 3 ° before and after that. In the present embodiment, the minimum unit of azimuth is “1 °”, and the decimal part is rounded down. When the measured azimuth is “2.6 °”, it is treated as “2 °”, and when it is “3.2 °”, it is treated as “3 °”. As a modification, the first decimal place may be rounded off and the minimum unit of the angle may be “1 °”.

Next, FIG. 3 shows a functional configuration of the electronic circuit in the wristwatch 10. In the figure, 31 is a CPU that controls the operation of the entire wristwatch 10. A clock circuit 32, drivers 33 to 36, a ROM 37, a RAM 38, a switch unit 39, a timer unit 40, and an interface 41 are connected to the CPU 31 via the bus B.
The CPU 31 also operates as the calculation means 31A, the position determination means 31B, the table change means 31C, and the time interval control means 31D.

  The driver 33 drives the motor 42 and transmits the rotation of the motor 42 to the second hand 24 through the wheel train 43, thereby moving the second hand 24 to an arbitrary position.

  The driver 34 drives the motor 44 and transmits the rotation of the motor 44 to the hour hand 22 and the minute hand 23 via the train wheel 45, thereby moving the hour hand 22 and the minute hand 23 to arbitrary positions.

  The driver 35 drives the motor 46 and transmits the rotation of the motor 46 to the date indicator 48 via the train wheel 47, thereby displaying an arbitrary date on the date display unit 25 by the date indicator 48.

  The driver 36 moves the azimuth hand 26A to an arbitrary position on the azimuth display unit 26 by driving the motor 49 and transmitting the rotation of the motor 49 via the train wheel 50 to the azimuth hand 26A. Let

  The ROM 37 (storage means) is composed of a nonvolatile memory, for example, a flash ROM, and stores data such as an operation program for operating the CPU 31 and fixed parameters.

  The RAM 38 is composed of, for example, an SRAM, and functions as a work memory when the CPU 31 executes operation control.

  The switch unit 39 includes the crown 13 and pushbutton switches 14 and 15, and sends an operation signal generated by a user operation of the wristwatch 10 to the CPU 31.

  The timer unit 40 performs a counting operation of two types of time-measured values “timer 1” and “timer 2” at the time of azimuth measurement. The timer 1 counts, for example, 30 [seconds] for continuously executing the mode during the operation of the azimuth measurement mode. The timer 2 counts a time interval for repeatedly measuring the azimuth, for example, 1 [second] or 3 [second] in the azimuth measurement mode.

  The interface 41 connects the triaxial geomagnetic sensor 51 and the triaxial acceleration sensor 52, operates these sensors under the control of the CPU 31, digitizes the obtained detection signals, and sends them to the CPU 31.

  The triaxial geomagnetic sensor 51 is a magnetic sensor using a Hall element or a magnetic impedance element, and detects a value used for calculating the orientation of magnetic north from the geomagnetism.

  The triaxial acceleration sensor 52 is a semiconductor sensor such as a capacitance type or a piezoresistive type, detects acceleration in three axial directions orthogonal to each other, and extracts the gravitational acceleration direction from the detected contents, and at that time, The position of the wristwatch 10 can be detected.

Next, the operation of the above embodiment will be described.
The operations shown below are basically executed after the CPU 31 develops and stores the operation program, fixed data, and the like read from the ROM 37 in the RAM 38.

  FIG. 4 shows the processing contents in the mode for measuring the north direction, which is executed by the CPU 31 when the push button switch 14 is operated by the user of the wristwatch 10. Initially, the CPU 31 causes the driver 36 to move the azimuth hand 26 </ b> A to the center “0” position on the azimuth display unit 26 via the motor 49 and the train wheel 50 (step S <b> 101).

  Next, the CPU 31 sets an initial value “30 [seconds]” for measuring the timing until the time-out of the azimuth measurement operation is set in the timer 1 of the time interval timer unit 40, and sets the time interval when performing continuous azimuth measurement in the timer 2. An initial value “1 [second]” is set (step S102).

  At the same time, the CPU 31 resets the count values of the timer 1 and the timer 2 of the timer unit 40 to “0”, and starts the count operation (step S103). At this time, the count operation is started until the timer 1 reaches 30 [seconds] and the timer 2 reaches 1 [seconds].

  The CPU 31 again determines whether or not the count value of the timer 1 of the timer unit 40 has exceeded 30 [seconds] (step S104).

  When it is determined that the count value of the timer 1 of the timer unit 40 does not exceed 30 [seconds] and it has not yet reached the time for ending the continuous operation of the azimuth measurement mode (No in step S104), the CPU 31 Next, it is determined whether or not the count value of the timer 2 of the timer unit 40 has exceeded the measurement interval set at that time, here 1 [second] (step S105).

  Here, when it is determined that the count value of the timer 2 of the timer unit 40 does not exceed the time of the measurement interval and the measurement timing has not yet come (No in step S105), the CPU 31 again starts from step S104. Return to processing.

  In this way, the processes of steps S104 and S105 are repeatedly executed, and it is determined that the count value of timer 1 has exceeded 30 [seconds] and the duration of the azimuth measurement mode has been reached, or the count value of timer 2 is equal to the measurement interval. Wait until the time has passed and it is determined that it is time to perform the measurement.

  If it is determined in step S105 that the timer 2 count value of the timer unit 40 has exceeded the measurement interval and the timing for measurement has been reached (Yes in step S105), the CPU 31 first resets the timer 2 count value. After setting to “0”, the count operation is started (step S106).

  Next, the CPU 31 causes the triaxial geomagnetic sensor 51 to detect the geomagnetism according to the orientation of the wristwatch 10 at that time via the interface 41 (step S107).

  Subsequently, the CPU 31 causes the three-axis acceleration sensor 52 to detect the posture of the wristwatch 10 through the interface 41, particularly the inclination angle of the plane including the dial 21 with respect to the horizontal plane (step S108).

  In this way, the correction calculation is executed at the inclination angle obtained by the triaxial acceleration sensor 52 with respect to the magnetic north direction calculated from the geomagnetism obtained by the triaxial geomagnetic sensor 51, thereby calculating an accurate azimuth angle of magnetic north (step). S109).

  Next, the CPU 31 calculates the calculated azimuth angle of magnetic north as a true north angle (360 ° azimuth) by declination correction calculation (step S110) (calculation means 31A). Based on the calculated true north angle (360 ° azimuth), the CPU 31 calculates the true north target angle as a true north angle (60 azimuth), which is the basis for display with the azimuth hand 26A of the azimuth display unit 26 ( Position determining means 31B).

  Next, the CPU 31 moves the direction hand 26A on the direction display unit 26 via the driver 36, the motor 49, and the train wheel 50 based on the calculated true north angle (60 directions) (step S111).

FIG. 5 is a flowchart showing the detailed processing contents of the CPU 31 regarding the movement of the azimuth needle 26A. Initially, the CPU 31 converts the true north angle (360 ° azimuth) into a true north angle (60 azimuth) for display on the azimuth display unit 26 (step S301).
At the time of the conversion, the CPU 31 calculates the true north angle (360 ° azimuth) n ₃₆₀ by the following equation using a remainder calculation.
n ₆₀ = mod ((n ₃₆₀ +3) / 6,60)
(However, n ₃₆₀ : True north angle (360 ° azimuth)
To convert to true north angle (60 azimuth) n ₆₀ .

  Instead of this arithmetic expression, the true north angle (360 ° azimuth) may be directly converted to the true north angle (60 azimuth) by a lookup table stored in the ROM 37.

  The true north angle (60 azimuths) obtained here corresponds to one of whether the pointer position in the 60 azimuth is “50” or more, or whether the pointer position in the 60 azimuth is “10” or less. Whether or not the true north angle (60 azimuths) can be directly displayed on the azimuth display unit 26 with the limited display range is determined (step S302).

  Here, whether the true north angle (60 azimuths) is equal to or greater than the pointer position “50” in 60 azimuths or less than the pointer position “10” in 60 azimuths, the true north angle is directly on the azimuth display unit 26. When it is determined that it can be displayed (Yes in step S302), the CPU 31 sets the true north angle (60 azimuth) calculated in step S301 as a target position (pointer position in FIG. 3) as it is (step S303).

  The CPU 31 further updates and sets “1 [seconds]” as the time interval in the timer 2 of the time interval timer unit 40 (step S304) (time interval control means 31C), and the subroutine of FIG. Then, the process returns to the process of FIG. 4, and also in FIG. 4, the series of processes of steps S <b> 104 to S <b> 112 is finished and the process returns to step S <b> 104.

  5, when the true north angle (60 azimuths) is smaller than the pointer position “50” in 60 azimuths and larger than the pointer position “10” in 60 azimuths, the true north angle (60 (Azimuth) cannot be directly displayed on the orientation display unit 26 (No in step S302). At this time, the CPU 31 next determines whether or not the display position of the azimuth hand 26A on the azimuth display unit 26 at that time is the pointer position “10” (end) in 60 azimuths (step S305).

  This is because the series of processes in steps S104 to S112 has already been executed at least once, and the true north angle (60 azimuths) cannot be directly displayed on the azimuth display unit 26 in the previous process. This is a process for determining whether or not the azimuth hand 26A is displayed at the pointer position “10” in the 60 azimuths at the right end of the range.

  When it is determined that the display position of the azimuth hand 26A is not the pointer position “10” in 60 azimuths and is not displayed at the right end of the azimuth display unit 26 in the previous process (No in step S305), the CPU 31 Next, it is determined whether or not the display position of the azimuth hand 26A on the azimuth display unit 26 at that time is the pointer position “50” (end) in 60 azimuths (step S306).

  This is because the series of processes in steps S104 to S112 has already been executed at least once, and the true north angle (60 azimuths) cannot be directly displayed on the azimuth display unit 26 in the previous process. This is a process for determining whether or not the azimuth hand 26A is displayed at the pointer position “50” in the 60 azimuths at the left end of the range.

  If it is determined that the display position of the azimuth hand 26A is not the pointer position “50” in 60 azimuths and is not displayed on the left end of the azimuth display unit 26 in the previous process (No in step S306), the CPU 31 Next, it is determined whether the true north angle (60 azimuths) is smaller than the pointer position “30” in 60 azimuths (step S307). The pointer position “30” in 60 azimuths is a pointer position corresponding to the true south angle facing the original true north angle (60 azimuth) “0”.

  When it is determined that the true north angle (60 azimuths) is smaller than the pointer position “30” (“10” to “29”) in the 60 azimuths, the CPU 31 sets “10” indicating the right end of the azimuth display unit 26 to the target position. Setting is performed (step S308). Here, the angle step corresponding to the pointer position “10” has true north angles (60 azimuths) of “10” to “29”.

  Here, the CPU 31 further updates and sets “3 [seconds]” longer than “1 [seconds]” as the time interval in the timer 2 of the time interval timer unit 40 (step S309). 4 is finished and the process returns to the process of FIG. 4, and also in FIG. 4, the series of processes of the steps S <b> 104 to S <b> 112 is finished and the process returns to the process from the step S <b> 104.

  If it is determined in step S307 in FIG. 5 that the true north angle (60 azimuths) is greater than or equal to the pointer position “30” (“30” to “50”) in 60 azimuths, the CPU 31 displays the azimuth at the target position. “50” indicating the left end of the unit 26 is set (step S310). Here, the angle step corresponding to the pointer position “50” has true north angles (60 azimuths) of “30” to “50”.

  Here, the CPU 31 further updates and sets “3 [seconds]” longer than “1 [seconds]” as the time interval in the timer 2 of the time interval timer unit 40 (step S309). 4 is finished and the process returns to the process of FIG. 4, and also in FIG. 4, the series of processes of the steps S <b> 104 to S <b> 112 is finished and the process returns to the process from the step S <b> 104.

Furthermore, when it is determined in step S305 of FIG. 5 that the display position of the azimuth hand 26A is the pointer position “10” in 60 azimuths and is displayed at the right end of the azimuth display unit 26 in the previous processing (in step S305). Next, the CPU 31 determines whether the true north angle (60 azimuths) is smaller than the pointer position “35” in the 60 azimuths (“10” to “34”) (step S311). The pointer position “35” in 60 azimuths is a fixed amount “5” on the side of the pointer position “50” from the pointer position corresponding to the true south angle facing the original true north angle (60 azimuth) “0”. "Is a pointer position shifted (expanded) by". "
Here, the CPU 31 sets the angle step corresponding to the pointer position “10” as a true north angle (60 azimuth) “10” to “34”, and sets the angle step corresponding to the pointer position “50” to the true north angle (60 Orientation) The correspondence table is changed as a range of “35” to “50” (table changing means 31D).

  If it is determined that the true north angle (60 azimuth) is smaller than the pointer position “35” in the 60 azimuth, the CPU 31 sets “10” indicating the right end of the azimuth display unit 26 as the target position (step S308).

  If it is determined in step S311 that the true north angle (60 azimuths) is greater than or equal to the pointer position “35” in 60 azimuths, the CPU 31 sets “50” indicating the left end of the azimuth display unit 26 as the target position ( Step S310).

  After the processing in step S308 or step S310, "3 [seconds]" is updated and set as the time interval in the timer 2 of the time interval timer unit 40 (step S309), and the subroutine in FIG. In addition to returning to the process of step 4, the series of processes of steps S104 to S112 is finished in FIG. 4 and the process returns to step S104.

5, when it is determined that the display position of the azimuth hand 26A is the pointer position “50” in 60 azimuths and is displayed at the left end of the azimuth display unit 26 in the previous process (in step S306 of FIG. 5). Next, the CPU 31 determines whether or not the true north angle (60 azimuths) is equal to or greater than the pointer position “25” in the 60 azimuths (step S312). The pointer position “35” in 60 azimuths is a fixed amount “5” on the side of the pointer position “10” from the pointer position corresponding to the true south angle facing the original true north angle (60 azimuth) “0”. "Is a pointer position shifted by". "
Here, the CPU 31 sets the angle step corresponding to the pointer position “10” as a true north angle (60 azimuth) “10” to “24”, and sets the angle step corresponding to the pointer position “50” to the true north angle (60 Orientation) The correspondence table is changed as a range of “25” to “50” (table changing means 31D).

  If it is determined that the true north angle (60 azimuths) is equal to or greater than the pointer position “25” in 60 azimuths, the CPU 31 sets “50” indicating the left end of the azimuth display unit 26 as the target position (step S310). .

  If it is determined in step S312 that the true north angle (60 azimuth) is smaller than the pointer position “25” in the 60 azimuth, the CPU 31 sets “10” indicating the right end of the azimuth display unit 26 as the target position (step S312). S308).

  After the processing of step S310 or step S308, the timer 2 of the time interval timer unit 40 is updated and set to “3 [seconds]” as the time interval (step S309), and the subroutine of FIG. In addition to returning to the process of step 4, the series of processes of steps S104 to S112 is finished in FIG. 4 and the process returns to step S104.

  As described above, when the processing of steps S104 to S112 is repeatedly executed and “10” indicating the right end of the azimuth display unit 26 is set as the target position and the azimuth hand 26A is displayed, the following processing is performed. A pointer position that is shifted by a certain amount from the pointer position corresponding to the true south angle to the opposite pointer position “50” side is set as a reference. That is, the angle step corresponding to the pointer position “10” indicating the end is expanded.

  Similarly, when “50” indicating the left end of the azimuth display unit 26 is set as the target position and the azimuth hand 26A is displayed, the pointer position opposite to the pointer position corresponding to the true south angle in the next processing. The pointer position shifted by a certain amount to the “10” side is set as a reference. That is, the angle step corresponding to the pointer position “50” indicating the end is expanded.

  As described above, when the azimuth hand 26A is displayed at the left and right ends of the display range of the azimuth display unit 26 at the time of the previous processing, when it is determined that the display range of the azimuth display unit 26 is next out, It is determined whether the pointer position is shifted (expanded) by a certain amount in the opposite direction to be displayed on which end, so that the display position of the azimuth hand 26A is swung to the left and right carelessly. Can be suppressed.

  Further, when the azimuth hand 26A is once displayed at the left and right ends of the display range of the azimuth display unit 26, the time interval until the next measurement of the siege is displayed within the display range. Since the value is set to be longer than the time interval in this case, it is possible to further reduce the power consumption associated with the large movement of the azimuth hand 26A.

  When it is determined in step S104 of FIG. 4 that the count value of the timer 1 of the timer unit 40 has exceeded 30 [seconds] and the time to end the continuation operation in the azimuth measurement mode has been reached (Yes in step S104), the CPU 31 The process of FIG. 4 is completed as described above, and then the process returns to a state of waiting for the push button switch 14 to be operated again.

  As described above in detail, according to the present embodiment, even when the display range of the needle indicating the azimuth is limited, it is possible to always display the needle in a stable state.

  In the above embodiment, since the measurement result of 360 ° azimuth of true north is converted into the information of 60 azimuth, the processing such as the determination of the display range is performed, so that the calculation amount in the CPU 31 can be reduced. Can contribute to the reduction of power consumption.

  In the above-described embodiment, an example in which the needle-type azimuth needle 26A is moved within the display range of the azimuth display unit 26 has been described. However, the present invention is not limited to this example. The present invention can also be applied to a configuration in which a so-called disc needle describing a needle shape or the like is used, and the rotation and display range of the disc needle are relatively limited. Such a configuration example will be briefly described as another embodiment of the present invention.

  FIG. 6A is a diagram showing a configuration example of the first disk needle DK1 and an orientation display window WD1 which is an opening provided in the dial 21. The center axis DA1 of the disk needle DK1 coincides with the center position of the fan-shaped orientation display window WD1. Here, an arrow MK1 indicating the direction of true north (N) as shown in the figure is shown on a part of the disk needle DK1.

  On the other hand, the dial 21 corresponding to the outer periphery of the azimuth display window WD1 is centered on the numerical value “0” in the 12 o'clock direction and has a scale of 10 ° and “300”, “330”, “30” corresponding to the 360 ° azimuth. "60" is described.

  When the rotation range is limited so that the arrow MK1 of the disc needle DK1 rotates within the range of “300” to “60” of the dial 21, the same control as in the above embodiment can be applied. .

  FIG. 6B is a diagram showing a configuration example of the second disk needle DK2 and an orientation display window WD2 that is an opening provided in the dial 21. In order to avoid the center axis DA2 of the disk needle DK2, the center position of the azimuth display window WD2 has a deformed sector shape that moves to the outer peripheral side. Here, the disk hand DK2 is divided into three parts, ie, an azimuth display area A1, a mode display area A2, and a day of the week display area A3.

  In the azimuth display area A1 of the disk needle DK2, a scale in units of 10 ° and numerical values “300” “330” “0” “30” “60” in 30 ° steps are described so as to correspond to the 360 ° azimuth. ing.

  On the other hand, an arrow MK2 is described at the center position in the 12 o'clock direction of the dial 21 corresponding to the center position of the outer periphery of the orientation display window WD2.

  Since the second disk needle DK2 is used for the operation mode display and the day of the week display in addition to the azimuth display, any one of the outer peripheral ranges of the azimuth display area A1 is indicated by an arrow MK2 during the azimuth display function operation. Since the rotation range is limited so as to be in the position, control similar to the above embodiment can be applied.

  In the present embodiment, an example has been described in which the CPU 31 performs the calculation based on the value acquired from the triaxial geomagnetic sensor 51 and the detection result of the triaxial acceleration sensor 52 as the azimuth measuring means. However, the present invention is not limited to this. For example, the sensor unit including the triaxial geomagnetic sensor 51 and the triaxial acceleration sensor 52 may further include a CPU, and the CPU 31 may acquire the true north angle (360 ° azimuth) calculated by the CPU in the sensor unit.

  The CPU 31 may be a single CPU, or may be configured by a plurality of CPUs and perform the same function.

  As described above, when the display range is limited by the relative relationship with the azimuth display window (WD1, WD2) regardless of whether or not the rotation operation of the disc needle (DK1, DK2) is limited, the above-described embodiment The same control as that can be performed.

  In addition, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention in the implementation stage. Further, the functions executed in the above-described embodiments may be combined as appropriate as possible. The above-described embodiment includes various stages, and various inventions can be extracted by an appropriate combination of a plurality of disclosed constituent elements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, if the effect is obtained, a configuration from which the constituent requirements are deleted can be extracted as an invention.

Hereinafter, the invention described in the scope of claims of the present application will be appended.
[Claim 1]
A measuring means for measuring the current orientation;
Display means for displaying the azimuth by reciprocating movement of the pointer;
Storage means for storing a correspondence relationship between the azimuth and the display position of the pointer as a table;
Position determining means for acquiring and determining the display position of the pointer on the display means from the table of the storage means based on the measurement result of the measuring means;
Table changing means for changing the table of the storage means when the display position of the pointer determined by the position determining means is an end of the display means;
An orientation display device comprising:
[Claim 2]
The storage means stores the azimuth divided into a plurality of predetermined angle steps and the display position of the pointer in association with each other,
The position determining means specifies the predetermined angle step including the azimuth measured by the measuring means, and displays the pointer display position associated with the specified angle step on the display means. Determine as position
The azimuth display device according to claim 1.
[Claim 3]
Time interval control means for controlling a time interval until the current direction is measured by the measuring means next, depending on whether or not the display position of the pointer determined by the position determining means is an end of the display means. The azimuth display device according to claim 1, further comprising:
[Claim 4]
The table changing means, when the display position of the pointer determined by the position determining means is an end of the display means, the correspondence between the azimuth divided into the predetermined angle steps and the display position of the pointer The azimuth display device according to claim 2, wherein:
[Claim 5]
The table changing means has the display where the display position of the pointer is one end of the display means when the display position of the pointer determined by the position determining means is one end of the display means. 5. The azimuth display device according to claim 2, wherein the predetermined angle step corresponding to the position is changed so as to be expanded.
[Claim 6]
An azimuth in an apparatus including a measurement unit that measures the current azimuth, a display unit that displays the azimuth by a reciprocating movement of the pointer, and a storage unit that stores a correspondence relationship between the azimuth and the display position of the pointer as a table Display method,
A position determination step of acquiring and determining the display position of the pointer on the display unit from the table of the storage unit based on the measurement result in the measurement unit;
A table changing step of changing the table of the storage unit when the display position of the pointer determined in the position determining step is an end of the display unit;
An orientation display method characterized by comprising:
[Claim 7]
A device including a measurement unit that measures the current azimuth, a display unit that displays the azimuth by a reciprocating movement of the pointer, and a storage unit that stores a correspondence relationship between the azimuth and the display position of the pointer as a table is built in. A program executed by a computer, wherein the computer is
Position determining means for acquiring and determining the display position of the pointer on the display unit from the table of the storage unit based on the measurement result in the measurement unit; and
Table changing means for changing the table of the storage section when the display position of the pointer determined by the position determining means is an end of the display section;
A program characterized by functioning as

10 ... watch,
11 ... watch case,
12 ... bezel,
13 ... Crown,
14, 15 ... pushbutton switch,
16: Band mounting part,
21 ... Dial,
22 ... hour hand,
23 ... minute hand,
24 ... second hand,
25 ... Date display section,
26: Direction display section,
26A ... compass needle,
31 ... CPU,
31A: Calculation means,
31B: Position determining means,
31C: Time interval control means,
31D ... Table changing means,
32 ... Timer circuit,
33-36 ... driver,
37 ... ROM,
38 ... RAM,
39 ... Switch part,
40: Timer section,
41 ... Interface,
42, 44, 46, 49 ... motor,
43, 45, 47, 50 ... train wheel,
48 ...
51 ... 3-axis geomagnetic sensor,
52 ... 3-axis acceleration sensor,
A1 ... Direction display area,
A2: Mode display area,
A3: Day of the week display area,
B ... Bus DA1, DA2 ... Disc needle shaft,
DK1, DK2 ... Disc needle,
MK1, MK2 ... arrows,
WD1, WD2 ... Direction display window.

Claims (7)

A measuring means for measuring the current orientation;
Display means for displaying the azimuth by reciprocating movement of the pointer;
Storage means for storing a correspondence relationship between the azimuth and the display position of the pointer as a table;
Position determining means for acquiring and determining the display position of the pointer on the display means from the table of the storage means based on the measurement result of the measuring means;
Table changing means for changing the table of the storage means when the display position of the pointer determined by the position determining means is an end of the display means;
An orientation display device comprising: The storage means stores the azimuth divided into a plurality of predetermined angle steps and the display position of the pointer in association with each other,
The position determining means specifies the predetermined angle step including the azimuth measured by the measuring means, and displays the pointer display position associated with the specified angle step on the display means. The direction display device according to claim 1, wherein the direction display device is determined as a position.   Time interval control means for controlling a time interval until the current direction is measured by the measuring means next, depending on whether or not the display position of the pointer determined by the position determining means is an end of the display means. The azimuth display device according to claim 1, further comprising:   The table changing means, when the display position of the pointer determined by the position determining means is an end of the display means, the correspondence between the azimuth divided into the predetermined angle steps and the display position of the pointer The azimuth display device according to claim 2, wherein:   The table changing means has the display where the display position of the pointer is one end of the display means when the display position of the pointer determined by the position determining means is one end of the display means. 5. The azimuth display device according to claim 2, wherein the predetermined angle step corresponding to the position is changed so as to be expanded. An azimuth in an apparatus including a measurement unit that measures the current azimuth, a display unit that displays the azimuth by a reciprocating movement of the pointer, and a storage unit that stores a correspondence relationship between the azimuth and the display position of the pointer as a table Display method,
A position determination step of acquiring and determining the display position of the pointer on the display unit from the table of the storage unit based on the measurement result in the measurement unit;
A table changing step of changing the table of the storage unit when the display position of the pointer determined in the position determining step is an end of the display unit;
An orientation display method characterized by comprising: A device including a measurement unit that measures the current azimuth, a display unit that displays the azimuth by a reciprocating movement of the pointer, and a storage unit that stores a correspondence relationship between the azimuth and the display position of the pointer as a table is built in. A program executed by a computer, wherein the computer is
Position determining means for obtaining and determining the display position of the pointer on the display section from the table of the storage section based on the measurement result of the measuring section, and the display position of the pointer determined by the position determining means Table changing means for changing the table of the storage unit when the display is an end of the display unit,
A program characterized by functioning as