JP3163809B2 - Map display device and map display method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a map display
And map display methods .

[0002]

2. Description of the Related Art Conventionally, a navigation system using a GPS (Global Position System) has been known. The navigation system includes a CD-ROM storing map data, a screen for displaying the map data, a receiving device for receiving position information signals from a plurality of artificial satellites, and the like. Then, while calling and displaying desired map data on the screen, the current position is calculated from the positions of the plurality of artificial satellites and the position where the position information signal from the artificial satellite is received, and the calculated position is calculated. It is displayed on the map on the screen.

[0003]

However, in such a navigation system, the existence of an artificial satellite is indispensable, so that not only the whole system is enlarged, but also the communication function is indispensable. The size of the device itself is also large, and the current position cannot be easily detected.
In addition, the time zone cannot be used depending on the position of the artificial satellite, so that the current position cannot be detected in a timely and simple manner.

[0004] The present invention has such has been made in view of the conventional problems, the system as a whole is a itself small course that apparatus, a map display device that can be used in a timely and convenient And a map display method .

[0005]

In order to solve the above-mentioned problems, a map display device according to the present invention comprises a map display means for displaying a map , and a user interface on a map displayed on the map display means.
Setting means for setting a plurality of target points that the user can see ;
Coordinate data acquisition means for acquiring respective coordinate data on the map of the plurality of target points set by the setting means, and measuring respective directions to the plurality of target points set by the setting means as seen from the user. ,
Azimuth data obtaining means for obtaining azimuth data, coordinate data of the target point obtained by the coordinate data obtaining means, and associating the azimuth data of the target point obtained by the azimuth data obtaining means, Storage means for storing for each of a plurality of target points set by the setting means, and current position obtaining means for obtaining a current position of the user based on the coordinate data and direction data of the plurality of target points stored in the storage means And this current position acquisition means
The current position of the user obtained by
And display control means for identifying and displaying the information.
According to another aspect of the present invention, there is provided a map display method comprising: a map display step of displaying a map ; and a user visually checking the map displayed by the map display step means.
A setting step of setting a plurality of possible target points, a coordinate data obtaining step of obtaining respective coordinate data on the map of the target points set in the setting step, and a setting step viewed from a user . Measuring the respective azimuths to a plurality of set target points, an azimuth data obtaining step of obtaining azimuth data, the coordinate data of the target point obtained in the coordinate data obtaining step, and the azimuth data obtaining step Storing a plurality of target points set in the setting step in association with the azimuth data of the target points acquired in the above-mentioned setting step; and coordinates of the plurality of target points stored in the storing step. Yu on the basis of the data and the azimuth data
And the current position acquiring step of acquiring the current position of Heather, this
Of the user acquired in the current location acquisition step of
The position is identified in the map displayed in the map display step.
And a display control step of performing a separate display .

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. In this embodiment, the present invention is applied to a wristwatch. As shown in FIG. 1, a dot matrix type LCD (Liquid Crystal Display) is provided on the upper surface of a wristwatch main body 1.
Is provided, and a rotating bezel 3 is provided around the periphery of the display unit 2. Although not shown, azimuth values indicating azimuth angles of 0 ° to 360 ° are printed on the rotating bezel 3 together with the scale.

A mode switch button 4, a setting mode switch button 5, and a set button 6
A, 6B and 6C are provided. The mode switching button 4 is operated when switching between the normal clock mode and the map mode, and the setting mode switching button 5 is operated when switching between the map movement mode, the position input mode, and the azimuth input mode.

The set buttons 6A and 6B are used for moving the map display when the target map is displayed in the map moving mode and for moving the cursor, the position, and the position in the position input mode. Operated when setting the value of azimuth. The set button 6C is used to store the display coordinate data where the cursor is located in the position input mode in the storage areas L and M, which will be described later, and in the azimuth mode, to store the azimuth data at 12:00 in the azimuth data storage area R, which will be described later. It is operated when storing in S.

FIG. 2 is a block diagram showing a circuit configuration of the wristwatch. In FIG. 2, an oscillation circuit 8 is a circuit for generating a clock signal of a fundamental frequency, and outputs the generated clock signal to a frequency dividing circuit 9. . The frequency dividing circuit 9 divides the frequency of the input clock signal to output a timing signal T for controlling each unit, generates a 1 Hz clock signal, and outputs it to the time counting circuit 10. The time counting circuit 10 calculates the year,
A counter of month, day, hour, minute, and second is provided, and the time signal of 1 Hz is measured to obtain current time data of year, month, day, hour, minute, and second. apparatus)
11 is output. The switch unit 12 includes the mode switching button 4, the setting mode switching button 5, and the set button 6 described above.
A to 6C, and the operation signal of each of the buttons 3 to is C
It is input to PU11.

The CPU 11 operates in accordance with a micro program stored in a built-in ROM 13 to display the display unit 2.
Is a central processing unit that executes a display process for, and a process of writing and reading data to and from the built-in RAM 14. The display unit 2 is configured by a dot matrix type LCD as described above, and each display element is driven by a display signal from the CPU 11 to display a time, a map, a cursor, a position, and the like.

The RAM 14 is obtained by calculating position data storage areas L and M for storing coordinate data of two target points on the map, and azimuth data storage areas R and S for storing azimuth data of the two target points. A current position data storage area W for storing current position data on a map, a work area Z for other calculations, and the like are provided.

The azimuth detecting unit 16 is composed of a magnetic azimuth sensor and an azimuth detecting circuit for detecting the horizontal component of the terrestrial magnetism with a small magnetic sensor coil and obtaining the azimuth from the analog output voltage, and outputs the detected north azimuth data. Based on this, the azimuth of the 12 o'clock direction of the wristwatch is calculated and output to the CPU 11. Further, the map information storage unit 15 stores map data for each divided area.

In the above configuration, when the user carrying the timepiece according to this embodiment detects the current position on a map, two target points A and B which can be visually observed at a certain point are arbitrarily determined. Keep it. Next, the map mode is set by operating the mode switching button 4 and the moving mode of the map data is operated by operating the setting mode switching button 5. Each time the buttons 6A and 6B are operated in this mode, the map information storage unit is operated. From 15, successive different map data are sequentially read out and switched and displayed on the display unit 2.

In this case, the button 6A functions to move the map data left and right, and the button 6B functions to move the map data up and down. As a result, FIG. 3
As shown in the figure, a map including the points A and B is displayed, and at this time, a cursor X is always blinking at the center.

In this state, the setting mode switching button 5 is operated to enter the position and orientation input mode. Further, by operating the buttons 6A and 6B, the cursor X displayed on the display unit 2 is moved right and left (button 6A) and up and down (button 6B) so that the cursor becomes the target point A on the map of the display unit 2. Press the set button 6C. Thereby, the target point A is set as the first point and the target point A on the map is set.
Are stored in the storage area L of the RAM 14. Similarly, when the cursor is moved to the target point B on the map and the rotating bezel 3 is operated by the set button 6C, the coordinate data of the point B is stored in the position data storage area M. With these operations, the setting of the position data of the target points A and B, which are the first and second points, ends.

Next, the azimuth input mode is set by the changeover button 5, and the set button 6C is pressed in accordance with the direction of the actual target point A which is watching the 12 o'clock direction of the wristwatch. Thereby, the azimuth data of the target point A is set and stored in the storage area R. Similarly, this time, the set button 6C is operated in accordance with the target point B in which the 12 o'clock direction of the wrist watch is viewed. With this operation, the azimuth data of the target point B is stored in the storage area S.

On the other hand, the CPU 11 executes processing corresponding to button operation in each of these modes. When the set button 6C is operated in the azimuth input mode, the operation is performed according to the flowchart shown in FIG. That is, in the first operation of the set button 6C in the azimuth input mode, the azimuth data of the target point A which is the first point is stored as in step S1, and in the second operation, the azimuth data is the second point in step S2. The direction indicating the position of the target point B is stored, and the process proceeds to steps S3 and S4.

In step S3, the current position is calculated. For example, the coordinate data of the first point is (x1, y).
1) If the azimuth data is θ1, and the coordinate data of the second point is (x2, y2), the azimuth data is θ2, a straight line y along the azimuth passing through the first point is y = tan θ1 × x− tan θ1 × x1 + y1 A straight line y passing through the second point is represented by y = tan θ2 × x−tan θ2 × x2 + y2. Therefore, x at the intersection of these straight lines y, y
Is

[0019]

(Equation 1)

From the obtained x, y = tan θ1 × x−tan θ1 × x1 + y1. After the coordinates (x, y) of the current position are obtained in this way, in the next step S4, the map shown on the display unit 2 is displayed. A mark M is displayed at the position of the above coordinates as shown in FIG. Thus, the current position on the map is indicated by the mark M, and the user can recognize the point where he or she is currently located by visually recognizing the mark M on the map.

In this embodiment, the current position is calculated from the positions and orientations of the first point and the second point. However, the current position is calculated based on the positions and orientations of a plurality of points. By calculating, it is possible to increase the calculation accuracy of the current position.

The azimuth detecting unit 16 is a magnetic azimuth sensor, but may be a hall compass using two Hall elements.

FIGS. 5 to 13 show a second embodiment of the present invention. As shown in FIG. 5, on the upper surface of the wristwatch main body 21, a display section 22 constituted by a dot matrix LCD is provided, and a recall button 23 is provided. A mode switching button 24, a setting button 25, an up button 26A, and a down button 26B are provided around the wristwatch body 21.

The mode switching button 24 is a clock mode,
Stride setting mode, stroke detection mode, navigation mode,
And is operated when switching to the return setting mode.
Clock → Step setting → Stroke detection → Navigate →
It switches repeatedly in the order of the return setting. The setting button 25 is operated when switching between setting / resetting of each numerical value and inputting start / stop of stroke detection. Further, the up button 26A and the down button 26B are operated when inputting a numerical value and switching between straight / random in the return mode, and the recall button 23 is operated when displaying the measured and stored data on the display unit 22. Is done.

FIG. 6 is a block diagram showing a circuit configuration of the present embodiment. In FIG. 6, an oscillation circuit 28 is a circuit for generating a clock signal of a fundamental frequency, and outputs the generated clock signal to a frequency dividing circuit 29. I do. The frequency dividing circuit 29 divides the frequency of the input clock signal, generates a clock signal of 1 Hz, and outputs it to the time counting circuit 30. The time counting circuit 30
Has a counter for hours, minutes, and seconds, measures the clock signal of 1 Hz, obtains time data of hours, minutes, and seconds, and outputs the time data to the CPU 31.

The switch section 32 comprises the recall button 23, the mode switching button 24, the setting button 25, the up button 26A, and the down button 26B. The operation signals of the buttons 23 to 26A and 26B are input to the CPU 31. .

The CPU 31 operates according to the microprogram stored in the built-in ROM 33.
2 is a central processing unit that executes a display process for the device 2 and a process of writing and reading data to and from the built-in RAM 34. Further, the display unit 22 drives each display element by a display signal from the CPU 31, Display distance, direction, etc. As shown in FIG. 7, the RAM 34 includes various storage registers. The clock register 34A stores the time data from the time counting circuit 10, and the step count register 34B detects the time data by the step detection unit 35 described later. A value obtained by counting the number of steps is stored.

The azimuth register 34C stores azimuth data detected by an azimuth detecting unit 36 described later.
The stride length register 34D stores the value of the length of the stride length of the user input in advance by operating the up button 26A or the down button 26B. The register 34E stores the azimuth data and the linear distance data of the departure point to the destination. Are stored. Further, a plurality of azimuth and distance data are stored in the data register 34F.
Stores the azimuth and distance until the azimuth changes.

FIG. 8 shows a detailed storage area of the data register 34F, which is composed of a large number of areas 40a, 40b, 40c... Comprising an azimuth data storage area and a distance data storage area.

The step number detecting section 35 is a circuit provided with, for example, an acceleration sensor to detect a vibration of the body at every walking and output the vibration as a step number signal. The azimuth detecting unit 36 is constituted by a magnetic azimuth sensor of a type in which a horizontal component of the terrestrial magnetism is detected by a magnetic sensor coil made of a small high-permeability alloy, and the azimuth in the 12:00 direction is obtained from the analog output voltage. Also,
The warning generation unit 17 is a sound generation circuit that generates a warning sound in accordance with an instruction from the CPU 31. FIG. 9 shows a display example of the display unit 22, in which display areas 22a, 22b, and 22c for displaying a stride, a distance, and a direction are provided. Also, a display area 22d for displaying time is provided.

Next, the operation of this embodiment according to the above configuration will be described with reference to the flowcharts of FIGS. FIG. 10 is a general flowchart showing the CP
U11 determines whether or not a mode has been selected by operating the mode switching button 24 in step SA1, and according to the mode set by operating the mode switching button 4, a clock (step SA2), a stride setting (step SA3), Stroke detection (step SA4), stroke setting (step SA4)
5), a process corresponding to each mode of the return setting (step SA6) is executed. In the case of the stroke setting processing of step SA5 and the return setting processing of step SA6, subsequently, the navigation processing of step SA7 is executed. The clock process (step SA2) is a process of storing the current time of the time counting circuit 10 of FIG. 6 in the clock register 34A shown in FIG. 7, and displaying the current time data on the display unit 22.

The process of detecting the stroke in step SA4 is performed in such a manner that, when the vehicle moves from the start position to the stop point, the movement is not a linear movement, and the vehicle may bend at various places. This is a process of measuring and storing the distance, the distance, and the azimuth of the straight line moved from the start point. Prior to performing the stroke detection processing in step SA4, first, in step SA3.
, The user sets the length of his / her own stride in the stride register 34A. A wristwatch has a traveling direction of 1
Keep at 2 o'clock. Next, the operation of the mode switching button 4 advances to the stroke detection processing of step SA4.

FIG. 11 is a flowchart showing the details of the stroke detection processing in step SA4. The CPU 31 starts the operation in accordance with the flowchart shown in FIG. 11. First, in step SB1, it is determined whether or not the setting button 25 has been pressed. If it is determined that the setting button 25 has not been pressed, the standby state is maintained.
The second and subsequent processes are started. That is, in step SB2, the azimuth data is measured based on the output signal from the azimuth detecting unit 36 and stored in the register 34C.
In step SB4, the distance data = the number of steps × the stride is calculated using the number of steps in the register 34B and the stride data previously stored in the register 34D, and is stored in the register 34G.

Then, the process proceeds to Step SB5, where the azimuth data based on the output signal from the azimuth detecting unit 16 and the register 3
It is compared with the azimuth data stored in 4C to determine whether or not the azimuth has changed. In this case, for example, it is determined that there is no change in the azimuth if the change is smaller than a predetermined azimuth angle, for example, 10 °, and that there is a change if the change is 10 ° or more. Step S
In step B5, when there is no change in direction, step SB
The process proceeds to step S6, where the measured orientation is stored in the register 34G, and the process returns to step SB2 via step SB7.

Thereafter, by repeating steps SB2 to SB7, if the direction of movement is straight without any change in direction, the step count data is stored in the register 34B and the direction and distance data are stored in the register 34G.

When the azimuth of the traveling direction changes,
This is detected in step SB5 and the next step SB8
Then, the azimuth and distance to the point, that is, the azimuth data and the distance data stored in the register 34G are stored in the register 3G.
It is stored in the first area 40a of 4F.

In the next step SB9, the azimuth and the linear distance from the departure point to that point are calculated, and
In step SB10, the step count register 34B is reset. Then, the azimuth data newly detected in step SB6 is set in the register 34G, and thereafter, steps SB2 to SB7 are repeated through step SB7, whereby the number of steps in the changed direction is stored in the register 34B, and the azimuth data and the distance data are stored in the register 34B. Each is stored in the register 34G.

If there is a change in direction, step S
The process proceeds from B5 to step SB8 to store the azimuth and the distance from the point at which the azimuth was changed last time to the point in the storage area 40b next to the register 34F.

Then, in the next step SB9, the azimuth and the linear distance from the departure point to the point are calculated,
At step SB10, which is stored in E, the step count register 34B is reset. In this way, register 34
F stores the azimuth data and distance data between the changed points, and the register 34E stores the azimuth and the linear distance from the departure point. Then, when the destination is reached and the setting button 25 is operated, YES is detected in step SB7, and the process of stroke detection shown in FIG. 11 ends.

The data stored in the registers 34F and 34E can be sequentially switched and displayed on the display unit 22 by operating the recall switch. As a result, it is possible to know the route from the departure point to the destination.

When the vehicle returns from the departure point to the destination as described above and then returns to the departure point via the same route, or the direction and distance of the traveling route are set in advance, and this setting is performed. The case of moving according to the set direction and distance will be described. In the case of returning to the departure place through the same route, when the return setting mode is selected by operating the mode switching button 24, the CPU 11
The return setting process of step SA6 is executed.

FIG. 12 is a detailed flowchart of the return setting process. That is, either straight or random is set according to the operation of the up button 26A or the down button 26B (step SC1). Next, it is determined whether or not the set mode is straight (step SC2). If straight is set, 180 ° is added to the azimuth from the departure point stored in the register 34E and the register 34E is added. (Step SC3). The direction of the departure point can be known by displaying the data of the register 34E on the display unit 22.

On the other hand, if random is set in step SC1, the azimuth and distance of the register 34G, which are measured and stored in the above-described stroke detection mode, are fetched in the opposite direction each time the azimuth changes (step SC4). , 180 ° is added to the taken-out azimuth, and the register 34G
(Step SC5). Therefore, the directions and distances taken out, added, and reset in steps SC4 and SC5 are sequentially displayed on the display unit 2, so that the direction from the destination to the starting point and the distance every time the direction changes are changed. You can know.

Clock (step SA2), step setting (step SA3), stroke detection (step SA4), stroke setting (step SA5), return setting (step SA6)
The processing corresponding to each mode is executed. Step SA5
In the case of the stroke setting process and the return setting process of step SA6, the navigation process of step SA7 is subsequently executed. The clock processing (step SA2) is performed by using the clock register 34 shown in FIG.
After storing the current time data in A, the current time data is displayed on the display unit 22.

When traveling along a preset route,
The route data is set in the process of setting the route in step SA5. That is, in the process of setting the stroke in step SA5, the azimuth data and the straight-line distance data from the departure point to the destination can be preset in the register 34E by operating the up button 26A and the down button 26B. Further, the areas 40a, 40a of the register 34F of FIG.
At b and 40c, azimuth data each time the azimuth from the departure point to the destination changes and distance data therebetween can be set and stored in advance.

When the navigation mode is selected by operating the switching button 4, the navigation can be executed in step SA6. This navigation is performed according to the flowchart shown in detail in FIG. First, in step SD1, it is determined whether or not the setting button 25 has been pressed. When the setting button 25 has not been pressed, the standby state is maintained, and at the time when the setting button 25 is pressed, the determination processing after step SD2 is started.

In step SD2, the azimuth is measured based on the output signal from the azimuth detecting section 16, and in the next step SD3, the number of steps is counted based on the output signal from the step number detecting section 15, and in the next step SD4, the number of steps is stored in advance. Using the obtained stride length, distance = number of steps × step length is calculated and stored in the register 34G. Subsequently, in step SD5, the first direction previously stored in the register 34F,
It is determined whether or not the azimuth measured in step SD2 does not match. If the azimuth does not match, the warning generator 17 is operated in step SD6 to generate a warning sound. If the two positions do not match, it is determined whether or not the actual distance calculated in step SD4 is equal to or longer than the distance previously stored in the register 34F.

If the distance is not longer than the distance stored in advance, that is, if the azimuths match and the point to which this azimuth should be changed has not yet been reached, step SD9
To determine whether or not the setting button has been pressed, and press the setting button 5
Until is pressed, the determination processing from step SD2 to step SD9 is repeated.

When it is detected in step SD7 that the vehicle has reached the point at which the direction is to be changed, step SD7 is performed.
Then, the flow advances to step SD8 to specify the next direction and distance stored in the register 34F. Further, after resetting the step counter, the warning generation unit 17 is operated to generate a warning sound, and the determination processing of steps SD2 to SD9 is repeated until the setting button 5 is pressed.

Therefore, when the flow chart shown in FIG. 13 is executed, when the user has walked in a direction different from the direction stored in the register 34F, and when the vehicle has advanced more than the distance for each direction previously stored in the register 34F, A warning sound is generated. Therefore, it is possible to recognize that the user is walking with an azimuth and a distance different from the direction of the destination by generating the warning sound, and to appropriately navigate to the destination.

As described above, in the above embodiment, the walking direction from the starting point and the distance calculated based on the number of steps and the step length are sequentially stored, so that the starting point of the pedestrian and the destination are stored. The process up to and without the complexity
It can be detected accurately.

Further, since the stored distance for each direction is read in the reverse direction and the reverse direction of the direction is calculated, data for returning from the destination to the starting point can be obtained. Further, since the straight-line distance to the starting point is calculated, data of the shortest distance and the azimuth when returning from the destination to the starting point can be obtained. In addition, by displaying these distances and directions, it is possible to walk while checking the distance from the starting point to the destination, the path when returning from the destination to the starting point, the shortest distance and its direction, and easily. You can reach your destination or return to your starting point.

Further, when the heading does not match with the direction stored in advance or when the user walks for a distance longer than the distance stored in advance, a warning is issued. By recognizing that the user is walking in an azimuth and a distance different from the direction, the user can properly navigate to the destination.

[0054]

As described above, a map according to the present invention is provided.
With display devices and map display methods, it is possible to know the current position extremely quickly without the need for satellites or communication devices.
Not only can, and has an effect of mobile can be miniaturized.

[Brief description of the drawings]

FIG. 1 is an external view of a wristwatch showing one embodiment of the present invention.

FIG. 2 is a circuit block diagram of the embodiment.

FIG. 3 is a display state diagram of a display unit of the embodiment.

FIG. 4 is a flowchart showing the operation of the embodiment.

FIG. 5 is an external view of a wristwatch showing another embodiment of the present invention.

FIG. 6 is a circuit block diagram of another embodiment.

FIG. 7 is a diagram showing a configuration of a RAM according to another embodiment.

FIG. 8 is a diagram showing a more detailed configuration of the RAM.

FIG. 9 is a display state diagram of a display unit of another embodiment.

FIG. 10 is a flowchart showing the overall operation of the other embodiment.

FIG. 11 is a flowchart of a stroke detection process in the other embodiment.

FIG. 12 is a flowchart of a return setting process in the other embodiment.

FIG. 13 is a flowchart of a navigation process according to the other embodiment.

[Explanation of symbols]

 2 display unit 3 rotating bezel 4 mode switching button 11 CPU 14 RAM 15 map information storage unit 16 direction detection unit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G08G 1/0969 G01C 21/00 G09B 29/10

Claims (5)

(57) [Claims] 1. A map display means for displaying a map , and a user visually checks a map displayed on the map display means.
Setting means for setting a plurality of target points that can be set; coordinate data obtaining means for obtaining respective coordinate data on the map of the target points set by the setting means; and setting by the setting means viewed from the user Azimuth data acquisition means for measuring the respective azimuths to the obtained target points and acquiring the azimuth data; the coordinate data of the target points acquired by the coordinate data acquisition means; and the azimuth data acquisition means. A storage unit that associates the azimuth data of the target point with each other and stores for each of the plurality of target points set by the setting unit; and a coordinate data and an azimuth data of the plurality of target points stored in the storage unit. users acquired current position acquisition unit, by the current position acquisition means for acquiring a current position of the user on the basis Current of
A map display device comprising: display control means for displaying the current position on the map . (2) The car displayed on the map displayed on the map display means
Further comprising cursor display means for displaying the sol; The setting means is displayed by the cursor display means.
The desired cursor can be moved by moving the cursor
2. The land according to claim 1, wherein a plurality of points are set.
Figure display device. 3. A map display apparatus according to claim 1 or 2, wherein the further comprising a map moving means for scrolling the map displayed on the map display means. 4. A map display device according to claim 1 , wherein the map display device has a shape that can be worn on an arm and portable. 5. A map display step for displaying a map , and a user interface on a map displayed by the map display step means.
A setting step of setting a plurality of target points that can be visually observed by the user; a coordinate data obtaining step of obtaining respective coordinate data on the map of the target points set in the setting step; Measuring the respective azimuths to the plurality of target points set in the step, azimuth data obtaining step of obtaining azimuth data, coordinate data of the target point obtained in the coordinate data obtaining step, and the azimuth data A storage step of storing, for each of the plurality of target points, set in the setting step in association with the azimuth data of the target point obtained in the obtaining step, and a plurality of targets stored in the storage step a current position acquisition step of acquiring a current location of the user based on the point coordinate data and direction data, the current Acquired by the position acquiring step the user of the current
The location is displayed on the map displayed in the map display step.
A display control step of performing identification display .