JP2003042797A - Positional information display and its displaying method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a positional information display for collecting attendant information on a map in a specified region being set based on the current position and orientation of an information terminal and displaying the collected attendant information while reconfiguring into a display list showing the distance relation with the current position of the information terminal clearly. SOLUTION: When attendant information a-k exists on the periphery a current position 20, attendant information c, d, e, f and g is included in a specified region 23. When the distances from the current position 20 to attendant information c-g are compared and the attendant information c-g is arranged in the ascending order of the distance to the current position 20, the attendant information c-g is arranged in the order of c, d, g, e and f. The attendant information is displayed on the display screen of an information terminal 15 in that order. The display screen displays information on the map extremely close to the current position 20 as auxiliary information of current position and the attendant information is described in the form of a list so that it can be browsed easily.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a position information display device, a method thereof, and a program, and in particular, a map corresponding to the current position and the current direction of the information terminal using an information terminal equipped with a measuring device capable of acquiring azimuth information. The present invention relates to a position information display device, a method thereof, and a program for presenting the user and ancillary information in an easily understandable manner.

[0002]

2. Description of the Related Art FIG. 19 shows a system configuration example of a conventional car navigation device. In FIG. 19, the storage medium 4 recording the map and the supplementary information is read into the central processing unit 1 by the reading device 3. And the azimuth measuring device 5
The current position and the current direction are calculated by processing information from the various sensors (GPS, geomagnetic sensor, vehicle speed sensor, steering measuring device) owned by the position information calculation device 8. Next, the map and incidental information, the current position, and the current direction are processed by the collation device 9, and various information stored in the storage device 2 (initial information, travel route, destination position,
A navigation (abbreviated as “navi”) display screen 7 for navigation is generated by adding personal information, and is displayed on the navigation display device 6.

In a conventional car navigation device, a azimuth measuring device typified by GPS is used on a map displayed on a display screen so that, for example, the map and incidental information are displayed so that the traveling direction of the vehicle body is above the display screen. By displaying
It is easy for the user to intuitively grasp the surrounding geographical information by collating the current scenery in front of him with the current position and current direction displayed on the display screen of the car navigation device, and the map and incidental information. It is common to have the following functions. In recent years, using a mobile phone that can acquire location information, the operation of a service that can display the current position of the mobile phone and the latest map and incidental information acquired from the wireless public network by collating has begun. There is.

[0004]

However, in the conventional car navigation or position information service using a mobile phone, for example, as shown in FIG. 19, since the map and the supplementary information are displayed with the current position as the center, the user is not allowed to do so. The amount of information on the map that can be acquired at one time is limited by the size of the display screen. Therefore, in order to obtain information on the map that is in front of the current direction and is not displayed on the display screen, it is necessary to move the map or change the scale, which causes a problem of complicated operations.

The present invention has been made to solve the above-mentioned problems, and its object is to provide a map on a map in a specific area set based on the current position and current azimuth of an information terminal. (EN) Provided are a position information display device, a method, and a program for collecting supplementary information and reconstructing and displaying the supplementary information in a display list that clearly shows the distance relationship with the current position of a mobile terminal. Especially.

[0006]

According to the present invention, there is provided a positional information display device for displaying incidental information on a map on a display screen according to current azimuth information, wherein a specific area is defined from the current azimuth and the current position. And a list display unit for collating the map information including at least the supplementary information with the specific region and extracting and displaying the supplementary information included in the specific region. The position information display device is obtained.

Further, according to the present invention, there is provided a positional information display method for displaying incidental information on a map on a display screen in accordance with current azimuth information, and a specific area setting for setting a specific area from the current azimuth and the current position. Position information display comprising: a step of displaying map information including at least the supplementary information and the specific area, and extracting and displaying the supplementary information included in the specific area. A method is obtained.

Further, according to the present invention, there is provided a program for causing a computer to execute a position information display method for displaying incidental information on a map on a display screen in accordance with current azimuth information. A specific area setting process for setting a specific area from the current position, and a list display processing for collating map information including at least the additional information with the specific area and extracting and displaying the additional information included in the specific area A program characterized by comprising:

[0009]

Embodiments of the present invention will be described in detail with reference to the drawings. 1 is a system configuration diagram of the present invention, and the same portions as those in FIG. 19 are denoted by the same reference numerals. As shown in FIG. 1, the position information display device of the present invention uses an information terminal 15 having a display screen 16 that can be visually recognized by a user who uses the present invention, and uses the current position and the current azimuth of the information terminal 15. Get information.

The information terminal 15 has the central processing unit 1 as a core, the azimuth measuring device 5, the reading device 3 for reading the storage medium 4, the storage device 2, the mobile communication device 14, the input device 10, and the display. And a device 13. Direction measuring device 5
Is equipped with a position measurement sensor and a direction measurement sensor for measuring the current position and current azimuth of the information terminal 15. The information obtained from this sensor is processed by the position information calculation device 8.

The position information calculation device 8 analyzes the information obtained from the sensor and calculates the current position and current direction of the information terminal 15. The positioning sensor is a device that receives a signal capable of obtaining the latitude and longitude of the information terminal, such as GPS (Satellite Navigation System). The direction sensor is a device capable of obtaining direction information of north, south, east and west from the magnetic state of the surface of the earth, such as a geomagnetic sensor.

The reading device 3 reads the map and incidental information recorded in the storage medium 4. The read map and incidental information are processed by the collation device 9. The storage device 2 stores the destination position and personal information (home position, acquaintance's house position, work position, etc.) that have been input in advance, and by inputting these information to the matching device 9. , The frequently used information can be quickly reflected in the position information display system.

The mobile communication device 14 is used to download new additional information (difference information for map update, new incidental information) not recorded in the storage medium 4 from the wireless public network. This additional information is input to the collation device 9 and reflected in the position information display system. The current position and current direction calculated by the position information calculation device 8 are input to the matching device 9. The collation device 9 calculates the positional relationship of the incidental information corresponding to the azimuth of the information terminal 15.

The current position and current azimuth of the information terminal 15 calculated by the position information calculation device 8 are input to the specific area setting device 11. The specific area setting device 11 is an arithmetic device that sets a specific area. The specific area refers to a limited area on the map calculated in association with the current position and the current direction of the information terminal 15. For example, as shown in FIG. 3, the current position 20 and the current direction 21 of the user.
Considering the fan-shaped specific area 23 set from
When the value of 7 is θ, the specific area 23 is located at the current position 20.
Is a starting point and has a spread in the yawing direction of ± (θ / 2) with a straight line extending in the current direction 21 as the center line, and the area has the specific area radius 26 as the radius of the fan. The values of the opening angle 27 and the specific area radius 26 can be appropriately changed by the input device 10. Specific area radius 2 using the input device 10
6 and the method of changing the values of the opening angle 27 will be described.

For example, the input device provided in the information terminal 15 of FIG. 9 is a disk-shaped potentiometer 24 which measures the amount of rotation with the center of rotation 25 as the center of rotation. The potentiometer 24 has a clockwise (A) and a counterclockwise (B)
The information obtained by converting the physical rotation amount in each direction into an electric signal is input to the central processing unit 1 of the information terminal 15.

Input device 10 using potentiometer 24
As a method of changing the value of the opening angle 27 using, for example, when the potentiometer 24 is rotated clockwise (A) as shown in FIG. 10, the angle of the opening angle 27 is increased according to the rotation amount. To do. On the contrary, when the potentiometer 24 is rotated counterclockwise (B), depending on the rotation amount,
The angle of the opening angle 27 is reduced. The angle range in which the opening angle 27 can be changed is from 0 degree to 360 degrees.

Input device 10 with potentiometer 24
As a method of changing the value of the specific area radius 26 using
For example, as shown in FIG. 11, when the potentiometer 24 is rotated clockwise (C), the specific area radius 26 is increased according to the rotation amount. Conversely, potentiometer 2
When 4 is rotated counterclockwise (D), the radius 26 of the specific region is decreased according to the amount of rotation. The range in which the specific area radius 26 can be changed is from 0 m to an arbitrary distance.

Incidentally, in FIG. 10, the potentiometer 2
By the clockwise (A) and counterclockwise (B) rotations of 4,
The function of changing the value of the opening angle 27 and the clockwise (C) and counterclockwise (D) of the potentiometer 24 in FIG.
It is needless to say that the switching to the function of changing the value of the specific area radius 26 by the rotation of can be freely selected by an operation button or the like not shown.

In FIG. 1, the display list composing device 12 collates the positional relationship of the incidental information corresponding to the azimuth of the information terminal 15 obtained by the collating device 9 with the specific region 23 obtained by the specific region setting device 11. Thus, the supplementary information included in the specific area 23 is extracted, and the distance from the current position 20 to each supplementary information is calculated. The incidental information is displayed on the display screen 16 of the display device 13 according to the distance from the current position 20 to each incidental information.

For example, as shown in FIG. 3, the current position 20
When there are 11 pieces of supplementary information a to supplementary information k around the supplementary information, the supplementary information included in the specific area 23 is supplementary information c, supplementary information d, supplementary information e, and supplementary information. There are five items, f and incidental information g. By comparing the distances from the current position 20 to the additional information c to the additional information f, and arranging them in the order closer to the current position 20, the additional information c, the additional information d, the additional information g, the additional information e, and the additional information f are obtained. Become.

FIG. 4 is an example in which the supplementary information arranged in the order closer to the current position 20 is displayed on the display list 31. Information on the map that is extremely close to the current position 20 is displayed on the display screen 16 as current position supplementary information 30, and the display list 31 describes the supplementary information in a list format so that it can be easily viewed.
If there is additional information that cannot fit on the display screen, for example,
Using the slide menu 33 capable of changing the display position of the display list 31, the slide bar 32 is slid to switch the display to an arbitrary display position to browse the incidental information included in the specific area 23. To enable.

The above processing operation will be supplementarily described with reference to more specific examples. FIG. 5 shows a part of a vast map recorded in the storage medium 4 and incidental information (building name, address) associated with the map. For the purpose of this explanation, symbols are provided at the center of the map to clearly indicate the current position and current direction of the user. In FIG. 5, the user is facing northwest, and the area shaded with a fan-shaped diagonal line is the specified area. The position information display system of the present invention displays the incidental information on the display screen as shown in FIG. 6 by extracting the incidental information included in the specific area and calculating the distance from the current position to each incidental information. .

As shown in FIG. 7, when the user changes the current direction to the direction of south-southeast, the position information display system of the present invention resets the specific area from the current position and the current azimuth and displays the supplementary information included in the specific area. By re-extracting and calculating the distance from the current position to each incidental information, the incidental information is displayed again on the display screen as shown in FIG.

FIG. 2 is a flowchart showing the state transition (operation procedure) of the present invention. When the position information display system of the present invention is activated, first, the initialization work necessary for using the device such as the central processing unit 1 included in the information terminal 15 is performed (step S1). Next, the measurement of the current position and the current direction by the azimuth measuring device 5 is started (step S2), and the current position and the current azimuth are obtained (step S).
3). Further, the map and the incidental information are read from the information medium 4 (step S4), and the specific area is set from the obtained information (step S6).

Further, the initial information is read from the storage device (step S5), and the additional information is read from the mobile communication device (step S7). From the various map information (map, supplementary information, initial information, additional information) thus obtained and the specific region, various map information included in the specific region is extracted as supplementary information to be displayed on the display screen (step S8). ,
A display list is created (step S9). Then, the created display list and the current position supplementary information are displayed on the display screen (step S10). When the supplementary information included in the specific area is updated by updating the current position and the current azimuth or changing the specific area by operating the input device, the content is reflected on the display screen in real time ( Steps S11, S6, S8-S11). If there is no input from the input device (step S11), whether to end or return to step S2 is selected depending on whether the above process is continued (step S12).

Next, another embodiment of the present invention will be described with reference to FIG. In FIG. 12, consider a specific area 23 of a circle set from the current position 20 and the current direction 21 of the user. The specific area 23 is a specific area distance 2 from the current position 20.
A point on the current azimuth 21 at 8 is defined as a circle whose center is the center of the circle and whose radius is a specific area radius 26 from the center of the circle. The values of the specific area distance 28 and the specific area radius 26 are determined by the input device 1
It can be appropriately changed by setting 0.

Input device 10 with potentiometer 24
Using the specific area distance 28 and the specific area radius 2 of FIG.
A method of changing the value of 6 will be described. In FIG. 12, as a method of changing the value of the specific area distance 28 using the input device 10 by the potentiometer 24, for example, the potentiometer 24 shown in FIG. 9 is rotated clockwise (A).
When rotated to, the specific area distance 28
Increase. Conversely, when the potentiometer 24 is rotated counterclockwise (B), the specific area distance 28 is reduced according to the rotation amount. The range in which the specific area distance 28 can be changed is from 0 m to an arbitrary distance.

In FIG. 12, as a method of changing the value of the specific area radius 26 using the input device 10 by the potentiometer 24, for example, when the potentiometer 24 shown in FIG. 9 is rotated clockwise (A), the rotation thereof is performed. The specific area radius 26 is increased according to the amount. On the contrary, when the potentiometer 24 is rotated counterclockwise (B), the specific area radius 26 is decreased according to the rotation amount. The angle range in which the specific area radius 26 can be changed is from 0 degree to the specific area distance 2
Up to 8.

Referring to FIG. 12, for example, the current position 2
When eleven pieces of supplementary information a to supplementary information k exist around 0, the supplementary information included in the specific area 23 is supplementary information e, supplementary information f, supplementary information g, and supplementary information g. There are five pieces of information j and additional information k. Comparing the distances of the supplementary information e to supplementary information g and supplementary information j and supplementary information k from the current position 20, and arranging in order from the current position 20, supplementary information g, supplementary information e, supplementary information f, and supplementary information f The information is j and the additional information is k.

FIG. 13 shows a display list 31 of the additional information arranged in the order of closer to the current position 20 in the example of FIG.
It is an example displayed in. On the display screen 16, the current position 20
Information on the map very close to is displayed as the current position supplementary information 30, and the display list 31 is described in a list format so that the additional information can be easily viewed.

The above processing operation will be supplementarily described with a more specific example. FIG. 14 shows a part of a vast map recorded in the storage medium 4 and incidental information (building name, address) associated with the map. For the purpose of this explanation, symbols are provided at the center of the map to clearly indicate the current position and current direction of the user. In FIG. 14, the user is facing southwest, and the area shaded with a circle is the specified area. The position information display system of the present invention extracts the incidental information included in the specific area and calculates the distance from the current position to each incidental information, thereby displaying the incidental information on the display screen as shown in FIG. .

Further, another embodiment of the present invention will be described with reference to FIG. As shown in FIG. 16, when eleven pieces of supplementary information a to supplementary information k exist around the current position 20, the supplementary information included in the specific area 23 is supplementary information c and supplementary information. There are five items, d, incidental information e, incidental information f, and incidental information g. Each distance from the current position 20 to the incidental information c, the incidental information d, the incidental information e, the incidental information f, and the incidental information g is measured to obtain the distance Dc and the distance Dd.
, Distance De, distance Df, and distance Dg.

When these distances Dc to Dg are compared and arranged in the order closer to the current position 20, the additional information c, the additional information d, the additional information g, the additional information e, and the additional information f are obtained. Figure 1
7 is an example in which the additional information arranged in order from the current position 20 is displayed on the display list 31. In FIG.
The additional information is used to calculate the display position in the display area from the distance Dc to the distance Dg by the following equation 1.

(Display position of additional information) = (height of display area) × {(distance from current position on map to additional information) / (radius of specific area on map)} (Equation 1 ) For example, the display position Hc of the incidental information c is obtained by the following Expression 2.

Hc = Hi × {Dc / R} (Equation 2) where Hc: Display position of supplementary information Hi: Height of display area Dc: Distance from current position on map to supplementary information R: The radius of a specific area on the map. Therefore, as shown in FIG. 17, the display list 31 that clearly shows the distance relationship between the current position on the map and the incidental information is displayed on the display screen 16 of the information terminal 15.

Further, another embodiment of the present invention will be described with reference to FIG. 18, the same parts as those in FIG. 1 are designated by the same reference numerals. In FIG. 18, a position information display device including a display list constituent device 12 for extracting incidental information included in the specific area, and a search target input device 40, a comparison device 41, and an output device 42. 2 is a system configuration diagram of FIG.

The user inputs incidental information to be searched (hereinafter referred to as retrieval object incidental information) to the retrieval object input device 40 having a function of voice input or character input by voice or character. The search target input device 40 converts the search target incidental information into a character code that can be discriminated by the comparison device 41, and inputs the character code to the comparison device 40. The comparison device 41 compares the supplementary information extracted by the display list configuration device 12 with the character code that means the retrieval target supplementary information, and outputs the output device when the supplementary information includes the retrieval target supplementary information. Output to 42.

On the contrary, the comparison device 41 outputs the output device 42 when the supplementary information does not include the supplementary information to be searched.
Request to stop output. The output device 42 is the comparison device 41.
When the output request is received from the output device 42, the output device 42 outputs the output request. The output function is a function that clearly shows to the user that the search target incidental information is included in the specific area 23. For example, if the output device 42 is a small display capable of displaying characters, the search target incidental information is displayed. The fact that the information has been found is displayed to the user by displaying it on a small display, for example, “Search target found”.

When the output device 42 is, for example, a light emitting diode, the fact that the supplementary information to be searched is found is indicated to the user by emitting light. Further, the output device 42
However, for example, if it is a vibrating element, the fact that the supplementary information to be searched is found is generated by driving the vibrating element to clearly indicate to the user. Furthermore, when the output device 42 is, for example, a speaker, the output device 42 clearly indicates to the user that the supplementary information to be searched is found by reproducing the sound data.

In the embodiment of the present invention, the case where the current position and the current direction are measured using the direction measuring device 5 has been described. For example, when the current position can be obtained from the mobile communication device 14 or the position information Since it can be easily assumed to be realized by the conventional technology of estimating the current azimuth of the information terminal 15 from the history, the azimuth measuring device 5 including the GPS or the geomagnetic sensor is not necessarily required when using the conventional technology. . Therefore, the present invention is not limited to the provision of the azimuth measuring device 5 for measuring the current position and the current azimuth.

It is obvious that the operation of each of the above-described embodiments of the present invention may be stored as a program in a read-only recording medium such as a ROM in advance, and the program may be read by a computer and executed. Is.

[0042]

The first effect of the present invention is that the supplementary information on the map in front of the user can be searched easily and intuitively from the current position and the current azimuth of the portable terminal. . The reason is that only the supplementary information included in the specific area set from the current position and the current direction of the mobile terminal is automatically extracted and the extracted supplementary information is displayed in a list. This is because the size can be browsed easily and quickly.

The second effect of the present invention is that the supplementary information on the map around the user can be easily and intuitively retrieved from the current position and the current azimuth of the portable terminal. The reason is that the specific area is set from the current position and the current azimuth of the mobile terminal, so that the user holding the mobile terminal can easily change the specific area by changing the movement or direction.

A third effect of the present invention is that the positional relationship between the current location of the user and the supplementary information on the map around the user can be grasped easily and intuitively. . The reason is that, from the positional relationship between the user's current location and the incidental information, for example, the incidental information displayed on the display screen is displayed in the order closer to the user's present location.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the present invention.

FIG. 3 is a diagram showing an example of a specific area and an example of distribution of each incidental information according to the present invention.

FIG. 4 is a diagram showing a display example in the example of FIG.

5 is a diagram showing an example of a relationship between a specific area and map information in FIG.

FIG. 6 is a diagram showing a display example in the example of FIG.

7 is a diagram showing another example of the relationship between the specific area and the map information in FIG.

FIG. 8 is a diagram showing a display example in the example of FIG.

FIG. 9 is a diagram showing an example of an information terminal device including a potentiometer-type input device.

FIG. 10 is a diagram showing an example of operating a range of a specific region using a potentiometer-type input device.

FIG. 11 is a diagram showing an example of operating a specific area radius using a potentiometer-type input device.

FIG. 12 is another example showing the distribution of the specific area and each additional information.

13 is a diagram showing a display example in FIG.

FIG. 14 is a diagram showing an example of a relationship between a specific area and map information in FIG.

FIG. 15 is a diagram showing a display example in FIG.

FIG. 16 is a diagram showing an example of distribution of a specific area having a spread in the yaw direction and each piece of incidental information, which is an expanded example.

17 is a diagram showing a display example in FIG.

FIG. 18 is a system configuration diagram of another embodiment of the present invention.

FIG. 19 is a diagram showing an example of a conventional device.

FIG. 20 is a diagram showing a conventional display example.

[Explanation of symbols]

1 Central processing unit 2 storage devices 3 reader 4 storage media 5 Direction measuring device 6 Navi display device 7 Navi display screen 8 Position information calculation device 9 collation device 10 Input device 11 Specific area setting device 12 Display list components 13 Display 14 Mobile communication devices 15 Information terminal 16 Display screen 20 current position 21 Current direction 23 Specific area 24 Potentiometer 25 rotation center 26 Specific area radius 27 Open angle 28 Specific area distance 30 Current position supplement information 31 Display list 32 slide bar 33 Slide menu 40 Search target input device 41 Comparison device 42 Output device

Continued front page    F term (reference) 2C032 HB08 HB22 HC16 HC31                 2F029 AA02 AA07 AB01 AB07 AC02                       AC09 AC13                 5B075 ND20 PQ46 UU14

Claims (19)

[Claims] 1. A position information display device for displaying incidental information on a map on a display screen according to current azimuth information, and a specific region setting means for setting a specific region from the current azimuth and the current position, at least the above. A position information display device, comprising: a list display unit that collates map information including supplementary information with the specific area and extracts and displays the supplementary information included in the specific area. 2. The position information according to claim 1, wherein the specific area is a fan-shaped area having a spread in a yaw direction that matches a current azimuth and having a current position as a center of a fan arc. Display device. 3. The position information display device according to claim 2, further comprising an input unit capable of changing a range of the fan-shaped specific area. 4. The position information display device according to claim 1, wherein the list display unit displays the incidental information included in the specific area in order of increasing distance from the current position. . 5. The specific area is a circular area centered on a point located at a specific area distance from the current position on a straight line extending from the current position to the current azimuth as a starting point. 1. The position information display device according to 1. 6. The position information display device according to claim 5, further comprising an input unit capable of changing a range of the circular specific region. 7. The list display means sets and displays the drawing position of the incidental information on the display area according to the distance from the incidental information included in the specific area to the current position. Item 7. The position information display device according to any one of items 1 to 6. 8. The list display means explicitly displays the positional relationship between the current position and the additional information by displaying the additional information on the map that is extremely close to the current position on the display screen as the current position supplementary information. The position information display device according to any one of claims 1 to 7, characterized in that it is displayed. 9. A means for inputting desired supplementary information, a means for searching whether or not the desired supplementary information exists among a plurality of supplementary information included in the specific area, and the desired supplementary information An output unit that clearly indicates to the user when it exists, further comprising:
8. The position information display device according to any one of 8. 10. A position information display method for displaying incidental information on a map on a display screen according to current direction information, comprising a specific region setting step of setting a specific region from the current direction and current position. And a list display step of collating map information including at least the additional information with the specific area and extracting and displaying the additional information included in the specific area. . 11. The position information according to claim 10, wherein the specific area is a fan-shaped area having a spread in the yaw direction that matches the current azimuth and having the current position as the center of the fan arc. Display method. 12. The method according to claim 11, further comprising a step of changing a range of the specific area of the fan shape.
Location information display method described in. 13. The position information display method according to claim 10, wherein in the list display step, the incidental information included in the specific area is arranged and displayed in ascending order of distance from the current position. . 14. The specific area is a circular area centered on a point located at a specific area distance from the current position on a straight line extending from the current position to the current direction as a starting point. 10. The position information display method described in 10. 15. The method according to claim 14, further comprising a step of changing a range of the circular specific area.
Location information display method described in. 16. The list display step sets and displays the drawing position of the incidental information on the display area according to the distance from the incidental information included in the specific area to the current position. Item 16. A position information display method according to any one of items 10 to 15. 17. The list display step explicitly displays the positional relationship between the current position and the incidental information by displaying incidental information on a map extremely close to the present position on the display screen as supplementary information on the present position. The position information display method according to any one of claims 10 to 16, wherein the position information is displayed. 18. A step of inputting desired supplementary information, a step of searching whether the desired supplementary information exists among a plurality of supplementary information included in the specific area, and the desired supplementary information The position information display method according to any one of claims 10 to 17, further comprising an output step of clearly indicating to the user when the position information exists. 19. A program for causing a computer to execute a position information display method in which incidental information on a map is displayed on a display screen according to current direction information, which is a specific area from the current direction and current position. And a list display process for collating the map information including at least the supplementary information with the specific region and extracting and displaying the supplementary information included in the specific region. A program characterized by.