JP2003294460A - Guidance device, map making method, map making program having map making function, and computer-readable information recording medium recording map making program having map making function - Google Patents

Abstract

(57) [Summary] [Problem] To provide a guidance device, a map creation method, and a map creation function that can create map data that is not recorded in the map data but that accurately reflects a road that actually exists, and that is reflected. Provided is a computer-readable information recording medium that stores a map creation program having a map creation function. SOLUTION: A guidance device 1 for guiding a moving body along a road by using map data, wherein current position obtaining means 11h and 42 for obtaining a current position of the moving body, and the map data does not include the road. When the moving body moves along the supposed part, the fake means 43 for fake when the road actually exists in the movement trajectory of the moving body, and after reflecting the part imitated as the road on the map data. A guidance device 1 comprising: map creating means 44, 45, 46 for creating map data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide device for guiding a moving body along a road using map data, a map making method, a map making program having a map making function, and a map making program having a map making function. The present invention relates to a computer-readable information recording medium on which is recorded.

[0002]

2. Description of the Related Art Navigation devices have come into wide use in vehicles such as automobiles in recent years. Hereinafter, an automobile will be described as an example. This navigation device can accurately guide the automobile to the destination set on the map displayed on the display device. In the conventional navigation device, as this map, map data at several kinds of scales from a wide area map to a detailed map are held as vector data.
This map data is, for example, a DVD (Digital V
ersatile Disc: trade name) and CD (Com
It is provided to the navigation device in a state of being recorded on a medium such as pact disc (trade name).
The navigation device has a function of displaying its own position on a display unit based on map data whose scale is automatically or manually switched by a user's operation.

[0003]

However, the map data is produced by each vendor independently, and the specification is such that the user cannot add or change the map data. Therefore, when the user's car travels on the road created after the map data is created, it means that the vehicle passes through a part of the map data where there is no road. The map data of the recorded media provided by the vendor is mainly recorded in the urban areas, and in the urban areas, map data of each scale is prepared in detail. On the other hand, in areas other than urban areas, map data of each scale is not prepared as finely as in urban areas, so conventional navigation devices cannot display unit maps of detailed scale that can be displayed in urban areas, for example. .

An object of the present invention is to solve the above-mentioned problems and to produce a map data after reflection, which is not recorded in the map data but accurately reflects a road which actually exists, and a guide device. A method for producing a map, a map producing program having a map producing function, and a computer-readable information recording medium recording the map producing program having the map producing function.

[0005]

According to a first aspect of the present invention, there is provided a guide device for guiding a moving body along a road by using map data, the present position acquiring means for acquiring a current position of the moving body, and In the map data, when the mobile body moves to a portion where the road should not exist, a mimicking means that assumes that the road actually exists in the movement trajectory of the mobile body, and the portion that is imitated with the road is the map data. And a map creating unit that creates the map data after the reflection. According to the structure of claim 1,
When the mobile body moves in a portion where the road does not exist on the map displayed based on the map data, it is fake that the road actually exists in the movement trajectory of the mobile body. If this road actually exists, the fake part is reflected in the map data, and the reflected map data is created. In this way, for example, the newly opened road after the map data is created is reflected in the map data, and the map data after the reflection can be created as a result. Even in such a case, the map is presented to the mobile body based on the map data after the accurate reflection.

According to a second aspect of the present invention, in the configuration of the first aspect, the map creating means registers road data relating to a portion which is assumed to be the road in the map data as node link information, and the map after the reflection. It is characterized in that it is configured to generate data.

The invention of claim 3 relates to claim 1 or claim 2.
In any one of the above configurations, it is characterized by further comprising note information adding means for adding note information regarding an arbitrary point to the reflected map data. According to the configuration of claim 3, in addition to the operation of claim 1 or claim 2, since the annotation information can be added to the reflected map data that can accurately guide the moving body, The mobile body can easily move based on the annotation information.

The invention according to claim 4 is claim 1 or claim 2.
In any one of the above configurations, an attribute information adding unit for adding attribute information regarding an arbitrary point to the reflected map data is provided. According to the configuration of claim 4, in addition to the operation of claim 1 or claim 2, in the map data after reflection that can accurately guide the moving body,
Since the attribute information regarding an arbitrary point can be added, the moving body under guidance can easily move based on the attribute information regarding an arbitrary point.

The invention according to claim 5 is any one of claims 1 to 4.
In any one of the configurations, the map data is map data for each scale prepared for each scale, or
Rather than having data for each scale, one map data has map data indicating the scale type using flags such as display and non-display at each scale, and the pseudo-means tried to display it. When the map data of the scale corresponding to the map does not exist in the map data, the map data of another scale is used as a substitute, and the substitute portion of the map data of the other scale is reflected as a part assumed to be the road. Then, the map data after the reflection is created. According to the structure of claim 5, in addition to the operation of any one of claims 1 to 4, even when there is no map data of a reduced scale corresponding to the map to be displayed, another substitute With respect to map data of a reduced scale, it becomes possible to pretend that there is a road on the moving locus of the moving body.

The invention of claim 6 is the first to fifth aspects of the invention.
In any one of the above configurations, an identification member for visually distinguishing whether the displayed map information is a display based on the map data or a display based on the map data after the reflection is displayed. It is characterized by having a configuration. According to the configuration of claim 6, in addition to the operation of any one of claims 1 to 5, the displayed map is
Since it is possible to visually distinguish whether it is displayed based on the map data or based on the map data after reflection, it is possible to visually confirm that there is a change within the range of the displayed map. can do.

The invention of claim 7 is from claim 1 to claim 6.
In any one of the above configurations, when the pseudo means determines whether or not the road actually exists in the movement trajectory of the moving body, the movement from the start of the acquisition of the node trajectory of the current location of the moving body is started. By recognizing the movement trajectory of the body until it is connected to the next node as a collection of new node link information, it is assumed that the movement trajectory of the mobile body mimics the existence of the road. . According to the configuration of claim 7, in addition to the operation according to any one of claims 1 to 6, the moving body is allowed to move a portion which is considered to be a road which is actually present but not displayed on the map. When moving, it is possible to clarify the criteria for imitating that the road actually exists. For this reason, if this criterion is set appropriately, it is possible to accurately grasp the actual road that is not displayed on the map and reflect it on the reflected map data.

[0012] The invention of claim 8 is from claim 1 to claim 6.
In any one of the configurations, when the pseudo-means starts acquisition of the node locus of the current position of the moving body when determining whether the road actually exists in the moving locus of the moving body, By recognizing the movement trajectory of the mobile terminal to the next node after the movement of a certain time as a collection of new node link information, it is assumed that the movement path of the mobile body pretends that the road actually exists. Is characterized by.
According to the structure of claim 8, in addition to the operation of any one of claims 1 to 6, the moving body can move a portion which is considered to be a road which is actually present but not displayed on the map. When moving, it is possible to clarify the criteria for imitating that the road actually exists. For this reason, if this criterion is set appropriately, it is possible to accurately grasp the actual road that is not displayed on the map and reflect it on the reflected map data.

The invention of claim 9 relates to claim 7 to claim 8.
In any one of the above configurations, the dummy control means is configured to automatically or manually perform the process of assuming the movement trajectory of the moving body as the road. According to the structure of claim 9, in addition to the operation of any one of claims 7 to 8, when the mobile body moves on an existing road, which is not displayed on the map, the mobile body It is possible to reflect the existing road on the displayed map without being aware of it or consciously.

According to a tenth aspect of the present invention, in the configuration according to any one of the first to ninth aspects, the dummy means is a visual indicator indicating that the moving body is moving in a portion other than the road. It is characterized by displaying a typical display object. According to the configuration of claim 10, in addition to the operation of any one of claims 1 to 9, the moving body is currently passing.
It can be visually recognized that a road is imitated as a real road in a portion where the road does not exist on the map.

The above object is, in the invention of claim 11, a map making method for making map data for guiding a moving body along a road, wherein the present position for obtaining the present position of the moving body is obtained. Steps, a mimicking step of imitating that the road actually exists in the movement trajectory of the moving body when the moving body moves in a portion where the road should not exist in the map data, and a portion imitated as the road. Is created in the map data, and a map creating step of creating map data after the reflection is created. According to the configuration of claim 11, when the mobile body moves in a portion where the road does not exist on the map displayed based on the map data, it is fake that the road actually exists in the movement trajectory of the mobile body. If this road actually exists, the fake part is reflected in the map data, and the reflected map data is created. In this way, for example, the newly opened road after the map data is created is reflected in the map data, and the map data after the reflection can be created as a result. Even in such a case, the map is presented to the mobile body based on the map data after the accurate reflection.

According to a twelfth aspect of the present invention, in the configuration of the eleventh aspect, in the map creating step, road data relating to a portion which is assumed to be the road is registered in the map data as node link information, and the map after reflection is registered. It is characterized by creating data.

According to a thirteenth aspect of the present invention, in the configuration of the eleventh aspect or the twelfth aspect, there is provided a note information adding step of adding note information regarding an arbitrary point to the map data after the reflection. To do. This claim 1
According to the configuration of 3, the annotation information can be added to the reflected map data that can accurately guide the moving body in addition to the operation of claim 11 or 12, so that the moving body being guided Can be easily moved based on the annotation information.

According to a fourteenth aspect of the present invention, in the configuration of the eleventh aspect or the twelfth aspect, there is provided an attribute information adding step of adding attribute information regarding an arbitrary point to the reflected map data. To do. This claim 1
According to the configuration of 4, in addition to the operation of claim 11 or claim 12, attribute information regarding an arbitrary point can be added to the reflected map data that can accurately guide the moving body. The moving body being guided can easily move based on the attribute information about an arbitrary point.

According to a fifteenth aspect of the present invention, in the configuration according to any one of the eleventh to fourteenth aspects, the map data is
Rather than having map data for each scale prepared for each scale or data for each scale, one map data shows a scale type using flags such as display and non-display at each scale. In the pseudo step, when the map data of the scale corresponding to the map to be displayed does not exist in the map data, the map data of another scale is substituted, and the other scale is substituted. The map data after the reflection is created by reflecting the part assumed to be the road on the map data of 1. According to the configuration of claim 15, claim 11 to claim 1
In addition to any one of the actions of 4, even if there is no map data of the scale corresponding to the map to be displayed, there is a path on the moving locus of the moving body with respect to the map data of other substituted scales. It becomes possible to pretend when it exists.

According to a sixteenth aspect of the present invention, in any one of the eleventh to fifteenth aspects, the displayed map information is a display based on the map data or based on the reflected map data. It is characterized in that an identification member for visually distinguishing whether it is a display is displayed.
According to the configuration of this claim 16, in addition to the operation of any one of claims 11 to 15, whether the displayed map is displayed based on map data or based on the map data after reflection. Since it is possible to visually distinguish whether or not it is displayed, it is possible to visually recognize that there is a change within the range of the displayed map.

According to a seventeenth aspect of the present invention, in any one of the eleventh to sixteenth aspects, the determination step determines whether or not the road actually exists on the movement locus of the moving body. , The movement of the mobile body by recognizing the movement trajectory from the start of the acquisition of the node trajectory of the current location of the mobile body to the connection to the next node after the movement of the mobile body as a collection of new node link information. It is characterized by imitating if the road actually exists in the trajectory. This claim 1
According to the configuration of claim 7, in addition to the operation according to any one of claims 11 to 16, in the case where the moving body moves in a portion where it is considered that there is a road that actually exists but is not displayed on the map. In, it is possible to clarify the criteria for imitating that the road exists. For this reason, if this criterion is set appropriately, it is possible to accurately grasp the actual road that is not displayed on the map and reflect it on the reflected map data.

According to an eighteenth aspect of the present invention, in the configuration of any one of the eleventh to sixteenth aspects, in the dummy step, when it is determined whether or not the road actually exists on a movement locus of the moving body. , By recognizing the movement trajectory of the mobile terminal to the next node after the movement of the mobile terminal after a certain time has elapsed since the acquisition of the node trajectory of the current location of the mobile object is recognized as a collection of new node link information, The present invention is characterized by imitating that the road actually exists in the movement trajectory of the moving body. According to the structure of this claim 18, in addition to the operation of any one of claims 11 to 16, the moving body is allowed to move a portion which is considered to exist where there is a road which actually exists but is not displayed on the map. When moving, it is possible to clarify the criteria for imitating that the road actually exists. For this reason, if this criterion is set appropriately, it is possible to accurately grasp the actual road that is not displayed on the map and reflect it on the reflected map data.

According to a nineteenth aspect of the present invention, in the configuration according to any one of the seventeenth to eighteenth aspects, in the dummy step, a process of dummyly imitating the moving locus of the moving body with the road is performed automatically or manually. It is characterized in that According to the configuration of claim 19, claims 17 to 18
In addition to any one of the actions described above, when the mobile body moves on a real road that is not displayed on the map, the real road is being displayed without the mobile body consciously or consciously. Can be reflected on the map.

According to a twentieth aspect of the present invention, in the configuration according to any one of the eleventh to nineteenth aspects, in the pseudo step, the moving body is in a state of moving on a portion other than the road. It is characterized by displaying a typical display object. According to the structure of this claim 20, in addition to the operation of any one of claims 11 to 19, a road is present at a portion where the moving body is currently passing and where no road exists on the map. It can be visually confirmed that it is fake when it exists.

The above object is, in the invention of claim 21, a map creation program for exerting a function of creating map data for guiding a moving body along a road.
A current position acquisition unit that acquires the current position of the moving body, and a sham that assumes that the road actually exists in the movement trajectory of the moving body when the moving body moves to a portion where the road should not exist in the map data. It is achieved by means and a map creation program that functions as a map creation means for creating the reflected map data in which the portion imitated as the road is reflected in the map data. Claim 2
According to the configuration of 1, when the mobile body moves on a portion where there is no road on the map displayed based on the map data,
It is imitated when a road actually exists in the locus of movement of a moving body. If this road actually exists, the fake part is reflected in the map data, and the reflected map data is created. In this way, for example, the newly opened road after the map data is created is reflected in the map data, and the map data after the reflection can be created as a result. Even in such a case, the map is presented to the mobile body based on the map data after the accurate reflection.

The above object is, in the invention of claim 22, a computer-readable program storage medium recording a map creation program for exhibiting a function of creating map data for guiding a moving body along a road. And a current location acquisition means for acquiring the current location of the moving body,
In the map data, when the mobile body moves to a portion where the road should not exist, a pseudo-means that assumes that the road actually exists in the movement locus of the mobile body, and a portion imitated with the road are the map. The present invention is achieved by a computer-readable program storage medium characterized in that a map creation program for causing a function as a map creation means for creating reflected map data reflected in data is recorded. According to the configuration of claim 22, when the mobile body moves in a portion where the road does not exist on the map displayed based on the map data, it is fake that the road actually exists in the movement trajectory of the mobile body. If this road actually exists, the fake part is reflected in the map data, and the reflected map data is created. In this way, for example, the newly opened road after the map data is created is reflected in the map data, and the map data after the reflection can be created as a result. Even in such a case, the map is presented to the mobile body based on the map data after the accurate reflection.

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below with reference to the drawings. <First Embodiment> FIG. 1 is a block diagram showing a hardware configuration example of a navigation device 11 to which a guidance device according to a first embodiment of the present invention is applied.

The navigation device 11 has a function of guiding a moving body along a road using map data. This navigation device 11 is mounted on, for example, this mobile body, acquires the current location of this mobile body, and when the mobile body moves to a portion where a road should not exist in the map data, the road is traced on the moving trajectory of the mobile body. When it actually exists, it is simulated, and it has a function of creating the reflected map data that reflects the part that is simulated as a road in the map data. In the following description, an automobile is exemplified as the moving body.

The navigation device 11 includes a CPU 11
a, a RAM 11b, a ROM 11c, an operation unit 11d, a hard disk 11e, a display unit 11g, and a GPS signal receiving unit 11h. The CPU 11a is a central processing unit, uses the RAM 11b as a work area, and controls the ROM 11c and the like connected to the bus 55. This ROM11
c is a flash ROM which is a rewritable non-volatile memory, for example.

The RAM 11b has a function as a work area for executing a program. The operation unit 62 is
It is an operating means such as a mouse, a tablet device, and a keyboard for operating an object such as a button displayed on the screen of the display unit 11g.

The hard disk 11e has a function of reproducing the map data from a medium in which the map data is recorded as vector data under the control of the CPU 11a.
This medium is, for example, a DVD (Digital Ve
rsatile Disc: brand name) and CD (Comp
act Disc: trade name). Also, the ROM
11c stores correction data and complementary data for generating the reflected map data created as described above.
That is, the reflected map data is created by combining the map data with the correction data or the complementary data.
These correction data and complementary data will be described later.
Incidentally, instead of the hard disk 11e, for example, a data section of a medium capable of recording data is used as a substitute, and instead of overwriting, a change area is directly recorded in the data section of the medium provided with a dedicated recording area. It goes without saying that you can do so.

The correction data and the complementary data are recorded in the ROM 11c, instead of being recorded in the DVD-R (Digital Versati) as an example of the medium.
leDisc Recordable), DVD-RA
M (Digital Versatile Disc)
Random Access Memory), CD
-R (Compact Disc-Recordable
e), CD-RW (Compact Disc-ReW)
It is also possible to record the data in a writable).

The display unit 11g is a display unit having a function of displaying characters and figures, and is, for example, an LCD.
(Liquid Crystal Display) and EL (Electro Luminescence). GPS (Global Positioning)
System) signal receiving unit 11h uses GPS signals from satellites.
It has a function of receiving a signal and can grasp the current position based on the GPS signal.

FIG. 2 is a diagram showing an example of a screen displayed on the display unit 11g of FIG. On the display unit 11g, for example, a map displayed on the road 22 and a portion 23 other than the road is displayed. An automobile (not shown) equipped with the navigation device 11 is displayed on the map by the vehicle position icon 28 moving along the road 22. This vehicle position icon 28 is the GPS signal receiving section 11h of FIG.
It is displayed based on the GPS signal received by. Figure 2
The movement locus of the vehicle position icon 28 is displayed like a link 21 and the node 20 is set.
The cursor 25 is operated by the operation unit 11d in FIG.
It has a function of operating a display object (hereinafter referred to as “object”) on this screen.

Further, on this screen, note information adding means 2
7 and attribute information adding means 29 are provided. The note information adding means 27 has a function of adding note information as information to be noted regarding an arbitrary point to the map data or the reflected map data. Here, the annotation information is an icon such as a landmark. In this way, the map data after reflection that can accurately guide the car,
Since the attribute information regarding an arbitrary point can be added, the guided vehicle can easily move based on the attribute information regarding an arbitrary place.

Further, the attribute information adding means 29 has a function of adding note information about an arbitrary point to the map data or the reflected map data. In this way, attribute information about an arbitrary point can be added to the reflected map data that can accurately guide the vehicle, so that the guided vehicle can easily move based on the note information about the arbitrary place. it can.

A characteristic of the screen displayed on the display unit 11g is that the displayed map (map information) is displayed.
Is a configuration in which an identification member for visually distinguishing whether the display is based on the map data or the display based on the reflected map data is displayed. By doing so, it is possible to visually recognize that there is a change within the range of the displayed map. As the identification member, for example, when the entire display area is newly created, a character (icon) such as "new creation" is displayed on the screen, or the color of the entire screen is displayed instead of displaying the icon or the like. It may be displayed differently from the others. For example, in the case of a road, the color is changed as an example of the identification member,
It may be possible to visually identify by blinking or the like. Needless to say, a newly added note or the like may also be visually identified in the same manner.

FIG. 3 is a block diagram showing a configuration example of software operating in the navigation device 11 of FIG. The navigation device 11 includes the navigation software 41, a GPS signal reception control unit 42, a measurement map data correction unit 43, a movement locus storage unit 44, and a conversion engine 4.
5, correction / complementation engine 46, map database 47 and map editing software 48.

The GPS signal reception control section 42 has a function of receiving GPS signals from satellites and specifying the present location.
The navigation software 41, based on the position information from the GPS signal reception control unit 42 and the map data from the map database 47 or the map data after reflection,
It has the function of guiding to a set destination. The map database 47 manages a vector table 47a, a node link table 47b, an attribute information table 47c, and a note information table 47d.

The vector table 47a has various definitions (formats) depending on the way of thinking of each map vendor, and although it cannot be said which definition is general, it is roughly classified from vector data as map data. For example, it is composed of lines, surfaces, parts (landmarks, etc.) and notes. Further, the node link data may be included in the line referred to in this, or may have another table. Considering from FIG. 3, the vector table means a table which takes charge of general map drawing, for example.

The node link table 47b manages node link information for managing the nodes 20 and links 21 shown in FIG. This node link table 47b is
For example, it includes a node ID, a node starting point, a node ending point, a starting point connecting node ID, a final connecting node ID, and a display scale. The attribute information table 47c is, for example,
It has a function of managing the above attributes such as highways, one-way streets, no entry, toll roads, road widths (width [m] or large, medium, small, etc.), bridges, and the like. The annotation information table 47d includes, for example, natural terrain (mountain, river, sea, cape, altitude, cape, taki, etc.), roads (highway name, national road number, road name, main road name, etc.), transportation (train). , Monorail, etc.), entertainment facilities (ski resorts, golf courses, stadiums, famous places, hot springs, etc.), commercial facilities (department stores, supermarkets, banks, convenience stores, family restaurants, etc.) have the function of managing the above note information. .

The measurement map data correction unit 43 has a function of correcting the position information measured by the GPS signal reception control unit 42. The movement locus accumulating unit 44 has a function of accumulating a movement locus (self-position information) of a car that is being traced. Specifically, as shown in FIG.
For example, there is a newly existing road 52a other than the road 52, and when a vehicle equipped with the navigation device 11 travels as shown in FIGS.
As shown in, the movement locus storage unit 44 accumulates the movement loci.

The conversion engine 45 has a function of converting the traced position data such as longitude and latitude into road data (node link data). Correction / complementation engine 46
Has a function of correcting / complementing the node link data created by the conversion engine 45 by using the map data that has been repaired such as peripheral data and different scale data. here,
In the following explanation, "correction" means to correct the data that seems to have been acquired by mistake, and "complement" means
It means to supplement using existing data. It goes without saying that the terms “correction” and “complementation” may be treated together without being strictly distinguished.
The map editing software 48 has a function of editing the map data registered in the vector table 47a of the map database 47.

The configuration of the navigation device 11 is as described above. Next, an example of the map producing method will be described with reference to FIGS. FIG. 4 is a flowchart showing an example of the map creating method according to the first embodiment of the present invention. In step ST1, the GPS signal receiving section 11h of FIG. 1 as a position measuring device (current position acquisition means) such as GPS capable of identifying its own position in the user's car.
Assuming that a terminal (navigation device 11) equipped with is installed, map creation is started. The screen shown in FIG. 11 is displayed on the display unit 11g of the navigation device 11.

Next, at step ST2, the navigation device 11 stores the movement locus 51 shown in FIG. 12 as self position information (for example, latitude and longitude) at every set fixed time, and the movement locus accumulation shown in FIG. It is stored in the unit 44. When the navigation device 11 moves, its own position also moves, and thus the movement locus storage unit 44 stores movement locus information that is a continuous locus. This movement trajectory is
As shown in FIG. 13, the display unit 11g displays a plurality of dots at predetermined time intervals as a dotted line. However, that point does not have to match the number of measurements.

Although it depends on the measurement interval, if all the measurement points are displayed, the visibility becomes poor. Therefore, these points are thinned out and displayed. In this state, the movement locus is waiting for confirmation as shown in FIG. Whether the accumulated data is correct as a node link (road) and can be registered in the database is determined by an automatic confirmation mode and a manual confirmation mode.

Even in the automatic confirmation mode, it is confirmed if the user judges that it is confirmed (in the case of the manual confirmation priority design).
In addition, when a certain period of time elapses in either mode, for example, it is automatically determined as shown in FIG. This confirmation decision can be changed later.

Next, at step ST3, when it is automatically or manually determined that the accumulated data (movement locus information) is correct, the conversion engine 45 (position data-node link data conversion engine) determines as a road (node link). It is registered in the node link table 47b of the map database 47 as node link data. Next, in step ST4, if the map data already exists at the time of this registration, the map data (or the reflected map data that has already been reflected) is corrected using the node link data. The map making method is completed as described above.

Next, a method of recognizing a new node set will be described. As an example of a method of recognizing as a new node set, when using a currently existing map database (node link information) to move between an existing starting node and an existing terminating node, it becomes new node information, Recognized as a new node when connected to the terminating node.

At this time, it is not registered in the map database 47 until it is automatically or manually decided depending on the mode. From the point connected to this terminal node, GPS
If the signal receiving unit 11 is connected to the node again due to an error in the signal receiving unit 11 or the like, the portion from the first connection to the second connection is the correction target. In this case, the portion that is recognized as an error and is exceeded is automatically corrected.

On the contrary, when the node is not connected due to an error although it is originally connected (for example, even if it is invading an existing road) and is connected to the node after a while, the node closest contact point is changed. The distance is identified, and in the case of the specified value range, the candidate to be connected and the acquired locus become the new node candidate, and the latter becomes the correction target.

In this case, the node to be connected is registered in the database 47 in the automatic correction. As a result of being confirmed, the portion waiting for confirmation is displayed as a road on the display device. At this time, the road newly created from the trajectory is expressed in a different color so that the user can identify it as new data later, and the node link data created in the map database 47 is also used. Manage by setting up a column that can be understood that

Next, in step ST5, it is determined whether the detailed map data exists in the vector table 47a of the map database 47. Here, there are an automatic correction mode and a manual correction mode. In the automatic mode, for example, “NO” is always selected, but if the mode is changed midway, correction or the like is possible. Further, even in the case of manual operation, after a certain period of time, the same operation as in the automatic correction mode is performed. If the detailed map data exists, the process proceeds to step ST7. If the detailed scale map data does not exist, the process proceeds to step ST6 to project the map data of a wider area scale, thereby the map data of the range not moved. Can be manufactured.

In this projecting operation, the addition of a new node differs depending on whether the map data is vector data and whether the scale data has the vector data 47a or all scales as one vector data 47a. It is possible only with the difference between managing the flag indicating whether to display in either structure, or creating new node link data for a scale that does not exist. The information accumulated up to this point in the map database 47 is, for example, road information.

Next, in step ST7, it is determined whether or not the user wants additional correction to the map data. If the user does not want it, the process proceeds to step ST10, and if desired, the process proceeds to step ST8. In this step ST8, the user activates the map editing software 48,
At step ST9, predetermined data is added / corrected to the map data. Specifically, the map editing software 48 is used to display attribute information such as roads, note information, etc. in real time,
Alternatively, it is registered later (step ST10). As a result, it is possible to create more useful map data (step ST11).

When using newly created map data or map scale data, a visual display is provided so that the user can recognize that the data is newly created data. As a specific example, for example, a method of changing the color or blinking the color can be considered. )

<Node Correction Judgment> As the node correction judgment, basically, the distance may be compared with the connection point of the existing node to perform the correction. Further, the correction may be performed based on the time (measurement point = time) during which the object (river, pond, sea, etc.) that cannot be originally invaded is invaded.

FIG. 16 is a diagram showing an example of a locus 51g on which the navigation device 11 actually moves. It should be noted that FIGS. 17 to 20 thereafter show a locus as error data obtained in the situation of FIG. FIG. 17 is a diagram showing an example of a state in which the navigation device 11 jumps out of a position where the navigation device 11 actually moves, moves for a while, and then returns to a correct movement locus. In this case, the protruding portion (until the return beyond the connection node) is the correction target. If the correction target portion is not manually determined, the correction target portion is corrected and the actual movement locus is registered. On the actual display device, for example, a portion having a high correction priority and a portion having no higher correction priority are represented by different colors.

Next, FIG. 18 is a diagram showing an example of a state in which the vehicle makes a right turn before reaching the road, moves for a while, and then returns to a correct movement locus. In this case, the part that is moving without being connected is the correction target. Also in this case, if the confirmation is not performed manually, the correction target portion is corrected and the actual movement locus is registered.

FIG. 19 is a diagram showing an example of a state in which an object which seems to be impossible to enter is entered. The object that seems to be inaccessible is the river 54, for example. The map of FIG. 19 is close to that of FIG. 17, but the locus of movement has entered the river 54. In this case, it can be immediately identified as the correction target. In either case, it can be set how much the correction function should work from the actual position. As a matter of course, if the corrected portion is decided, it is registered in the database 47.

<Regarding Node Confirmation> There are two modes of node confirmation, an automatic confirmation mode and a manual confirmation mode, and in both modes, for example, the node is automatically confirmed after a certain period of time. The time until confirmation can be changed. 20 to 23 are diagrams each showing an example of a state in which a portion where no road (node) exists is continuously moving.

<Automatic Confirmation Mode> When the confirmation is automatic, when the connection is established with an existing node as shown in FIG. 20, the confirmation is waited as shown in FIG. In this description, the part waiting for confirmation means the part waiting for confirmation 52x in which a line connecting small arrays of “◯” is shown in the figure. When the vehicle continues to move as shown in FIG. 22, the portion shown in FIG. 20 is determined as a road and registered in the database 47, and the next existing node similarly waits for confirmation. In FIG. 23, when a certain time has elapsed, the confirmation waiting is similarly confirmed. After a while, the correction portion 52z is erased.

<Manual Confirmation Mode> On the other hand, when the confirmation is manual, the confirmation waits as shown in FIG. 21 when the existing node is connected as shown in FIG. If the user continues to move as shown in FIG. 22, the confirmation waiting portion 52x of FIG. 20 is confirmed as a road and registered in the database 47 according to a user's instruction, and the next existing node similarly waits for confirmation. After a while in FIG. 23, the confirmation waiting portion 52x is similarly confirmed by the user's instruction. After a while, the correction portion 52z is erased.

<Movement in an area where no node connection exists>
24 to 27 are diagrams each showing an example in the case of area movement in which no node connection exists. In this example, since no connection is made to the existing node, when a fixed time has elapsed in either the automatic confirmation mode or the manual confirmation mode, the process shown in FIGS.
As shown in 7, the movement locus is determined in order. In the case of the manual confirming mode, if a confirming instruction is given even if the time has not elapsed, the contents up to that point are confirmed.

<Simplification of node data> FIGS. 28 and 2
FIG. 9 is a diagram illustrating an example of a node data simplification method. 28 and 29 show the procedure of the node data simplification method at the time of registration in the database 47 or at the time of screen display, respectively. FIG. 28 shows before simplification, and FIG. 29 shows after simplification.

When all the data obtained by the locus acquisition is stored as node data or stored in the database 47, considering the ease of viewing on the screen display, the large amount of data, and the ease of later node editing, for example, Not preferable. Therefore, in this map making method, it is preferable to omit the part where it is determined that there is no problem even if the number of nodes is reduced, and display it on the screen or register it in the database. As this method, FIG.
When the traveling direction is almost constant as shown in FIG.
As shown in, the points between them are ignored, and the start point and the end point are regarded as one node link.

<Production of Lower Scale Map by Projecting Higher Scale Map> FIGS. 30 to 32 are views showing an example of a situation in which an upper scale map is projected to produce a lower scale map. Here, the upper map refers to a case where the scale is smaller than that of the lower map. For example, if a map with a scale of 1/25000 is the upper map, a map with a scale of 1 / 12,500 is a lower map. .

When the scale map data existing in the map database 47 does not exist in a certain area but the scale map data does not exist in the map database 47, the map of the upper scale shown in FIG. When the reduced scale map data exists, the map data for displaying the map as shown in FIG. 31 by projection is created as the map data of the lower scale.

Since the area where the map data of the upper scale is displayed is larger than the area where the map data of the lower scale is displayed, even if the area is projected on the lower scale displayed on the screen, it is originally displayed as the upper scale. Nothing may be displayed on the lower level map corresponding to the range. For this reason, the peripheral vertical / horizontal diagonally 8 sheets centering on the self position, and a total of 9 sheets including the self position are projected as lower scale data at once as shown in FIG. Further, when the user is going to move out of the projected data by moving with the lower scale, the three sheets in the traveling direction are similarly prepared as the lower scale data. By doing this, even if there is no map data of a certain scale, it is possible to supplement this and display the map.

According to the preferred embodiment of the present invention, it is possible to prepare the reflected map data which is not recorded in the map data but accurately reflects the actually existing road. Therefore, a vehicle equipped with the navigation device 11 can be guided more accurately.

The present invention is not limited to the above embodiment,
Various modifications can be made without departing from the scope of the claims. For example, each of the configurations of the above-described embodiments can be partially omitted or arbitrarily combined so as to be different from the above. For example, each configuration of the above-described embodiments may be partially omitted or may be arbitrarily combined so as to be different from the above.

The map making function program having the map making function described above is not limited to the form in which it is installed and operating in an electronic device such as a computer as described above, but may be, for example, a flexible disk or a CD (Compact Di).
sc: trade name, CD-R (Compact Disc)
-Recordable), CD-RW (Compac
t Disc-ReWriteable) or DVD
It may be stored in an information recording medium such as (Digital Versatile Disc) and distributed.

The map making program is recorded not only in the form stored in the information recording medium but also in an electronic device such as a computer connected to a transmission medium such as a network for performing data communication by wireless or wire. However, it may be downloaded to an electronic device such as a user's computer via a transmission medium such as a network.

[0074]

According to the present invention, a guiding device, a map making method, and a map making method that can make the reflected map data that is not recorded in the map data but accurately reflects the actually existing road. It is possible to provide a map creating program having a function and a computer-readable information recording medium recording the map creating program having a map creating function.

[Brief description of drawings]

FIG. 1 is a block diagram showing a hardware configuration example of a navigation device to which a guidance device according to a first embodiment of the present invention is applied.

FIG. 2 is a diagram showing an example of a screen displayed on the display unit of FIG.

FIG. 3 is a block diagram showing a configuration example of software operating in the navigation device of FIG.

FIG. 4 is a flowchart showing an example of a map creating method according to the first embodiment of the present invention.

5 is a diagram showing an example of a screen displayed on the display unit of FIG.

6 is a diagram showing an example of a screen displayed on the display unit of FIG.

7 is a diagram showing an example of a screen displayed on the display unit of FIG.

8 is a diagram showing an example of a screen displayed on the display unit of FIG.

9 is a diagram showing an example of a screen displayed on the display unit of FIG.

10 is a diagram showing an example of a screen displayed on the display unit of FIG.

11 is a diagram showing an example of a screen displayed on the display unit of FIG.

12 is a diagram showing an example of a screen displayed on the display unit of FIG.

FIG. 13 is a diagram showing an example of a screen displayed on the display unit of FIG.

FIG. 14 is a diagram showing an example of a screen displayed on the display unit of FIG. 1.

15 is a diagram showing an example of a screen displayed on the display unit of FIG.

16 is a diagram showing an example of a screen displayed on the display unit of FIG.

17 is a diagram showing an example of a screen displayed on the display unit of FIG.

FIG. 18 is a diagram showing an example of a screen displayed on the display unit of FIG. 1.

19 is a diagram showing an example of a screen displayed on the display unit of FIG.

20 is a diagram showing an example of a screen displayed on the display unit of FIG.

21 is a diagram showing an example of a screen displayed on the display unit of FIG.

22 is a diagram showing an example of a screen displayed on the display unit of FIG.

23 is a diagram showing an example of a screen displayed on the display unit of FIG.

24 is a diagram showing an example of a screen displayed on the display unit of FIG.

FIG. 25 is a diagram showing an example of a screen displayed on the display unit of FIG. 1.

26 is a diagram showing an example of a screen displayed on the display unit of FIG.

FIG. 27 is a diagram showing an example of a screen displayed on the display unit of FIG. 1.

28 is a diagram showing an example of a screen displayed on the display unit of FIG.

FIG. 29 is a diagram showing an example of a screen displayed on the display unit of FIG. 1.

30 is a diagram showing an example of a screen displayed on the display unit of FIG.

FIG. 31 is a diagram showing an example of a screen displayed on the display unit of FIG. 1.

32 is a diagram showing an example of a screen displayed on the display unit of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Navigation device, 11h ... GPS signal receiving part (current position acquisition means), 42 ... GPS signal reception control part (current position acquisition means), 43 ... Measurement map data correction part (simulation means), 44 ... Movement locus storage unit (map making means), 45 ... Conversion engine (map making means), 46 ... Correction / complementation engine (map making means)

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G09B 29/10 G09B 29/10 AF term (reference) 2C032 HB02 HB11 HB22 HC08 HC13 HC27 HD03 2F029 AA02 AB07 AC02 AC09 AC14 AC16 5B050 AA07 BA07 BA17 CA08 EA07 FA02 FA13 FA19 5H180 AA01 FF05 FF10 FF22 FF27 FF32

Claims (22)

[Claims] 1. A guide device for guiding a moving body along a road using map data, comprising: a current position acquisition means for acquiring the current position of the moving body; and a portion where the road should not exist in the map data. When the mobile body is moved, a pseudo-means for simulating that the road actually exists in the movement locus of the mobile body, and map data after reflection in which the portion imitated by the road is reflected in the map data is created. And a map producing means for performing the guide device. 2. The map creating means is configured to create road data after the reflection by registering road data related to a portion which is assumed to be the road as node link information in the map data. The guidance device according to claim 1. 3. The guide device according to claim 1, further comprising a note information adding unit that adds note information about an arbitrary point to the reflected map data. 4. The guide device according to claim 1, further comprising attribute information adding means for adding attribute information regarding an arbitrary point to the reflected map data. 5. The map data does not have map data for each scale prepared for each scale or data for each scale, but one map data shows or hides at each scale, etc. If the map data of the reduced scale corresponding to the map to be displayed does not exist in the map data, the simulated data has map data of other reduced scales. 5. The map data after the reflection is created by substituting for the map data of the other scale with the substituting in the above, and creating the map data after the reflection. The induction device according to any one of 4 above. 6. A configuration for displaying an identification member for visually distinguishing whether the displayed map information is a display based on the map data or a display based on the reflected map data. The guide device according to any one of claims 1 to 5, wherein: 7. The quasi-means, when determining whether or not the road actually exists in the movement trajectory of the moving body, starts from the acquisition of the node trajectory of the current location of the moving body, By recognizing the movement locus until connecting to the next node after movement as a collection of new node link information, it is configured to imitate if the road actually exists in the movement locus of the moving body. The guidance device according to any one of claims 1 to 6. 8. The quasi-means, when determining whether or not the road actually exists in the movement locus of the moving body, has a fixed time after starting acquisition of the node locus of the current location of the moving body. Is recognized as a collection of new node link information after the movement of the mobile terminal to the next node after movement of the mobile terminal, thereby simulating that the road actually exists in the movement trajectory of the mobile body. The guidance device according to any one of claims 1 to 7. 9. The method according to claim 7, wherein the quasi-means is configured to automatically or manually perform a process of simulating the movement trajectory of the moving body with the road. The described guiding device. 10. The mimicking means is configured to display a visual display object indicating that the moving body is moving in a portion other than the road. The guidance device according to claim 9. 11. A map creation method for creating map data for guiding a moving body along a road, comprising: a current position acquisition step of acquiring the current position of the moving body; and the road does not exist in the map data. When the moving body moves the supposed part, a mimicking step of imitating that the road actually exists in the movement trajectory of the moving body, and a map after reflection in which the part imitated by the road is reflected in the map data A map making step of making data. 12. The map creating step creates the reflected map data by registering road data relating to a portion which is assumed to be the road as node link information in the map data. The map making method described in. 13. The map creating method according to claim 11, further comprising a note information adding step of adding note information regarding an arbitrary point to the reflected map data. 14. The map creating method according to claim 11, further comprising an attribute information adding step of adding attribute information regarding an arbitrary point to the reflected map data. 15. The map data does not have map data for each scale prepared for each scale or data for each scale, but one map data shows or hides at each scale. If the map data of the scale corresponding to the map to be displayed does not exist in the map data, map data of another scale is included in the dummy step. 15. The map data after the reflection is created by substituting for the map data of the other scale with respect to the map data of the other reduced scale. The map making method described in Crab. 16. An identification member for visually distinguishing whether the displayed map information is a display based on the map data or a display based on the reflected map data is displayed. 16. The method for creating a map according to claim 11, further comprising: 17. In the dummy step, when determining whether or not the road actually exists in the movement trajectory of the moving body, the acquisition of the node trajectory of the current location of the moving body is started from the start of the movement of the moving body. The movement trajectory until the next node is connected after the movement is recognized as a collection of new node link information, thereby simulating that the road actually exists on the movement trajectory of the moving body. Item 17. The map producing method according to any one of Item 16. 18. In the dummy step, when determining whether or not the road actually exists in the movement trajectory of the moving body, a certain time has elapsed since the acquisition of the node trajectory of the current location of the moving body is started. Is recognized as a collection of new node link information by recognizing a movement trajectory of the mobile terminal to the next node after movement of the mobile terminal, thereby simulating that the road actually exists in the movement trajectory of the moving body. Item 18. The map producing method according to any one of items 11 to 17. 19. The method of claim 17 or 18, wherein in the impersonation step, a process of impersonating the movement trajectory of the moving body with the path is performed automatically or manually.
The method of making a map according to any one of 1. 20. The visual display object indicating that the moving body is moving in a portion other than the road is displayed in the dummy step.
20. The map producing method according to claim 19. 21. A map creation program for exhibiting a function of creating map data for guiding a mobile body along a road, comprising: a current location acquisition means for acquiring the current location of the mobile body; When the mobile body moves to a portion where a road should not exist, a quasi-means for simulating that the road actually exists in the movement trajectory of the mobile body, and a portion imitated by the road are reflected in the map data. A map creation program characterized by causing it to function as a map creation means for creating map data after reflection. 22. A computer-readable program storage medium storing a map creation program for exhibiting a function of creating map data for guiding a mobile object along a road, wherein the present location of the mobile object is acquired. A present location acquisition means, a mimicking means for imitating that the road actually exists in the movement trajectory of the moving body when the moving body moves in a portion where the road should not exist in the map data, and the road is imitated. A computer-readable program storage medium having recorded therein a map creation program that functions as a map creation means for creating the reflected map data in which the reflected portion is reflected in the map data.