JP2007163165A - Map information updating device for moving body, navigation device, and map information updating system for moving body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To set quickly the essential optimum route to a destination or a passing spot. <P>SOLUTION: When determined that a control circuit is deviated from a domain where its existence is allowed (S1), if the newest data of a map block exists (S3:Yes), map information of the map block is acquired from a server to update the information (S4), and map information of a map block determined to be necessary to be updated is updated successively relative to a map block B around the updated map block (S5-S7). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a moving body map information updating device, a navigation device, and a moving body map information updating system for performing update processing of map information for a moving body.

  For example, a navigation device for a moving body detects a current position by a position detector, and compares the current position with map information to identify the current position of the moving body. However, for example, when a new road is created after the map information is created, for example, when the moving body moves on a road that is not included in the map information, the navigation device misrecognizes that the road is moving on another road or the like. There is. Therefore, in order to solve such a problem, a map information update technique for a moving body is provided. This mobile object map information update technology determines whether or not map information has been updated according to the moving state. If there is an update of map information, it performs a process of updating the map information for the mobile object, and then This technique uses updated map information (see, for example, Patent Documents 1 to 4).

  For example, according to the technique disclosed in Patent Document 1, when the map information is updated at the distribution center for the mesh including the current position of the vehicle and the mesh around the mesh, and the map information is updated, The latest map information is received and the running state is specified using the map information. Further, for example, according to the technique disclosed in Patent Document 2, the map version information is compared, and the route search is performed using the maps of the latest version of the server and the latest version of the vehicle-mounted device.

In addition, there is also provided a technique for acquiring the updated map information along the guide route from the outside by transmitting the block information of the map information along the guide route and the old and new identification information to the outside (for example, patents) Reference 4). According to the technique described in Patent Document 4, since the map information close to the current position of the moving object is preferentially acquired from the updated map information along the guiding route, the moving object becomes the guiding route. It is possible to preferentially provide updated map information around the current position that is most necessary for moving along. In addition, the map information update technique shown by patent document 5 and patent document 6 is disclosed.
JP 2004-125508 A JP 2004-125509 A JP 2004-125510 A JP 2004-85245 A JP 2004-126035 A JP 2004-233174 A

  According to the techniques described in Patent Documents 1 to 3, the latest map information at the current position of the moving object can be acquired, and the map information can be used for the subsequent navigation functions. In addition, when these techniques are combined with the technique described in Patent Document 4, updated map information along the guidance route can be acquired from the current position, but map information related to other map blocks cannot be updated. .

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a moving body map information updating device, a navigation device, and moving body map information that can update map information of a map block without omission. To provide an update system.

  According to the first aspect of the present invention, the first updating means is the latest in the map information of the map block where the moving body is located or the neighboring map block adjacent to the map block among the plurality of map blocks constituting the map information. If not, the map information of the map block that is not the latest is updated by downloading from the outside, and the second update means, when the map information of the map block that is not the latest is updated, neighboring map blocks adjacent to the map block When the map information is not up-to-date, the map information of the non-latest map block is updated by downloading from the outside, and the execution means updates the update operation of the second update means until all the map information of the surrounding map blocks is up-to-date In order to repeat, for example, even if a new road is created, the map information is sequentially updated along the road. Thereby, the map information of a map block can be updated without omission.

  According to the invention described in claim 2, the first updating means collates the position of the moving body with the map information around the position of the moving body and determines that the moving body is out of the possible area. Is updated from the map information of the map block in the area where the road cannot exist, so it can be updated from the map information of the map block around the area where other roads may exist, The map information of the map block can be updated accurately.

  According to the third aspect of the present invention, it is determined that the position of the moving body specified every predetermined time by the position specifying means is out of the existable area on condition that the position is continuously deviated from the existable area. For this reason, it is possible to reliably determine that the moving object has deviated from the existence possible area, and it is possible to increase the certainty when determining whether the moving body is located in the existence possibility area or the non-existence area.

  According to the fourth aspect of the present invention, the first updating means is provided in the non-existent region on condition that the number of determinations determined that the position of the moving body is out of the existing region is not less than a predetermined number. Since updating is performed from the map information of the map block, it is possible to reliably update the map information of the map block after confirming that the location is a nonexistent area. In addition, the number of request processes for requesting map information can be reduced.

  According to the invention described in claim 5, the position specifying means specifies the current position of the moving object, and the updating means updates the map information of the map block each time the moving object is specified in a new map block. Therefore, necessary map information can be updated without omission.

  As in the invention described in claim 6, it is desirable that the updating means is configured to update the map information of the map blocks around the map block when updating the map information of the new map block.

  According to the navigation device of claim 7, after all of the map block updatable map information is updated by the update means and execution means of the mobile map information update device according to any one of claims 1 to 6, Since the setting means searches for and sets the guide route up to the destination point, the guide route can be searched after all the map information is updated, and the optimum guide route can be set.

(First embodiment)
Hereinafter, a first embodiment in which the function of the moving body map information updating device of the present invention is applied to a vehicle navigation device will be described with reference to FIGS. 1 to 5.

  A vehicle map information updating system A as a moving body map information updating system includes a navigation device 1 and a map server system 50. FIG. 1 schematically shows the overall electrical configuration of the vehicle map information update system by a combination of functional blocks.

  A navigation device 1 for a vehicle (for a moving body) includes a control circuit 2, and with respect to the control circuit 2, a position detector 3, a map data input device 4, a display device 5, an operation switch group 6, an audio circuit unit. 7, a remote control sensor 8, an external memory 9, a photographing camera 10, and a communication device 11 are connected. The map server system 50 includes a server 51 and is configured by connecting a map database 52 and a communication device 53 to the server 51.

  The control circuit 2 includes, for example, a CPU and a memory (both not shown). The control circuit 2 is a component that functions as first and second update means, position specifying means, and execution means. In the control circuit 2, in addition to a navigation program and program processing data, road map data obtained from the map data input device 4 is temporarily stored.

  The position detector 3 includes, for example, a GPS receiver 12 that receives a GPS signal from an artificial satellite for GPS (Global Positioning System), a gyroscope 13 that detects a yaw rate, and a vehicle speed sensor 14 that detects the speed of the vehicle. It is configured with. As the position detector 3, the geomagnetic sensor for detecting geomagnetism, the acceleration sensor for detecting acceleration in three axial directions orthogonal to each other, the inclination angle of the vehicle in the pitching direction, and the like are determined according to the detection accuracy. An inclination angle sensor for detection (none of which is shown) may be added to the above-described components 12 to 14. The position detector 3 detects the position with high accuracy while interpolating the detection signals of these position detection elements.

  The map data input device 4 is a device for inputting map information (map data) using a large-capacity information storage medium such as a CD-ROM, DVD-ROM, hard disk, or nonvolatile semiconductor memory. . This map information is converted into data for each of a plurality of partitioned map blocks, and version information is attached to each map block. Map information includes map drawing data for map display, road data necessary for various processing such as map matching, route search, route guidance, intersection data consisting of detailed data of intersections, background for displaying background layers In addition to place name data for displaying data, place names, areas, etc., locations of buildings and facilities such as convenience stores, facility data where the names are recorded, phone number data indicating the correspondence between phone numbers and facilities, etc. Data corresponding to a map. These map data are recorded as a database.

  The display device 5 is configured by, for example, a color liquid crystal display or a head-up display for displaying a map screen or the like, and is installed in the vicinity of the driver's seat of the vehicle to constitute a notification device. As shown in FIG. 2, on the display screen W of the display device 5, a road map whose scale can be changed in a plurality of stages in normal times is displayed, and the current position and traveling direction of the vehicle are superimposed on the display. A pointer M indicating is displayed. In addition, when executing a route guidance function based on a route calculation result to a destination point such as a destination Z or a waypoint (not shown) performed using a well-known Dijkstra method, the process proceeds in a state of being superimposed on a road map. The guidance route K to be displayed is displayed.

  In addition, various menu screens and input screens for searching the destination Z and waypoints by the user (generally the driver of the vehicle) and inputting these points, as well as various messages, information and help screens are also displayed. It has become so.

  The operation switch group 6 includes mechanical switches arranged around the display device 5, a touch panel formed on the display screen of the display device 5, and the like, commands related to operations such as various data and setting items, characters, and the like. It is provided to give information and map designation signals to the control circuit 2.

  The voice circuit unit 7 includes a voice synthesis circuit (not shown) and the like, and is connected to a speaker 15 as a notification device and a microphone 16 as a sound input unit, and a voice corresponding to voice information from the control circuit 2. Is output from the speaker 15 or voice information from the microphone 16 is received and provided to the control circuit 2. The remote control sensor 8 receives an operation signal from the remote control 17 from a remote location and gives it to the control circuit 2.

  The external memory 9 is configured by a data rewritable non-volatile memory such as a flash memory or a hard disk. For example, the external memory 9 stores program software for complying with other standards, or stores specific data (such as a travel locus history or a digital camera). This is provided for saving or recalling arbitrary image data captured by the user.

The photographing camera 10 is installed in a vehicle, photographs a peripheral image outside the vehicle, and transmits this image information to the control circuit 2. The control circuit 2 is configured to be able to recognize the peripheral image information of the vehicle.
The communication device 11 has a wireless communication function (for example, a wireless LAN or Bluetooth (registered trademark)) compliant with a predetermined standard, and is configured to be able to perform wireless communication with the communication device 53 connected to the server 51. ing.

  The control circuit 2 uses a command input through the operation switch group 6 or the remote control sensor 8 to execute a well-known map display function, route calculation function, route guidance function, telephone number search function, postal code search function, map code (registered trademark). Such as a search function using a unique code, a search function by genre, a nearest facility search function, a destination registration function, a point registration function, and the like.

  In the map server system 50, in response to a request from the outside (for example, the navigation device 1), the server 51 acquires map information (see the above-mentioned: version information, map drawing data, etc.) from the map database 52 for each map block, and a communication device. 53 is configured to be able to transmit (communication with the outside) to the outside (for example, the communication device 11 on the vehicle side).

The operation of the above configuration will be described with reference to FIGS.
In the present embodiment, the map information input from the map data input device 4 by the control circuit 2 of the navigation device 1 determines whether the map information is the latest for each map block around the current position of the vehicle, If the map information of the map block is not up-to-date as a result of the determination, the updating unit that downloads and updates the map information of the map block from the outside has a feature, and thus this portion will be mainly described.

  In the present embodiment, as shown in FIG. 2, the control circuit 2 of the navigation device 1 presets a guidance route K to reach the destination Z in response to a request from the user, and the vehicle guides this guidance route K. An example will be described in which a route K1 that does not exist in the old map information is finally searched while the vehicle is traveling, and the vehicle travels on the searched route K1. In FIG. 2, the route K2 is also a route that does not exist in the old map information like the route K1, and the marker M indicates the current position of the vehicle.

FIG. 3 schematically shows a map information update process performed by the navigation device.
First, the control circuit 2 determines that the host vehicle (refer to the position of the marker M in FIG. 2) has deviated from the possible region (in this case, the set route K) (step S1: YES) until the current vehicle state. The position is continuously detected and detected by the position detector 3.

  The control circuit 2 is connected to the server 51 through the communication devices 11 and 53 when it is detected that the current position of the host vehicle is deviated (deviated) from the route K even if the current position of the host vehicle is corrected by the map matching function. The version information of the corresponding map block B is acquired from the map database 52 (step S2). FIG. 4 shows the correspondence between the version information V and the map block B.

  As shown in FIG. 4, map information is stored in a state of being divided into sections (predetermined ranges) of a predetermined range (for example, 10 km square), and version information is recorded for each of the plurality of map blocks B. Has been. Further, on the display screen of the display device 5, the marker M is shown as the current position of the vehicle. For example, as shown in FIGS. 4A to 4C, “V1.02” corresponds to the version information V in the plurality of map blocks B of the entire map information and is stored in the memory in the control circuit 2. Indicates that it is remembered.

  When the control circuit 2 detects that the vehicle has deviated from the route K (corresponding to the possible area) even if the map matching function is performed by the map matching function, for example, the control circuit 2 determines that the vehicle is located in the impossible area. To do. In this case, when it is determined that the vehicle has deviated from the route K, the current position of the vehicle must be continuously deviated from the route K a predetermined number of times (for example, 10 times) every predetermined time (for example, 1 second). It is desirable to determine that the vehicle is off the route K. That is, even if the vehicle once deviates from the route K, the user may return the vehicle to the route K immediately. In this case, the certainty relating to the determination of whether the vehicle is located on the route K or off the route K can be increased.

  When the control circuit 2 determines that the vehicle has deviated from the route K, as described above, in step S2, the control circuit 2 requests the version information V of the map block Bo from the server 51, and acquires the version information V from the server 51 (FIG. (Refer to the hatched portion of 4 (a)).

  The control circuit 2 collates the version information V of the map block Bo acquired from the server 51 with the version information V stored in the memory for the corresponding map block, and the version information V stored in the memory is the latest. And if it is the latest (step S3: NO), the process is terminated without performing the update process. However, the control circuit 2 collates the version information V and if it is not the latest (step S3: YES), acquires the map information of the map block B from the server 51 and updates it (step S4).

  For example, as shown in FIG. 4A, the version information V of the corresponding map block B in which the new routes K1 and K2 are formed is “V1.02”, and the version information V acquired from the server 51 is “V1”. .03 ”, since the latest version information V is“ V1.03 ”by comparing these version information V, the control circuit 2 acquires the map information of the corresponding map block B from the server 51 and updates it. . Although the version information V is given as an example of an identification code for indicating the new and old map information, any identification code may be used as long as the new and old map information can be expressed.

  Next, the control circuit 2 obtains, for example, the version information V of the adjacent one or plural blocks of the map block B of the map information of the updated map block B from the server 51 (step S5). If it is determined that the latest data of this map block exists (step S6: YES), the map information of the map block B is downloaded from the server 51 and updated (step S7).

  Conversely, the control circuit 2 obtains the version information V of the surrounding (peripheral) map block B from the server 51 for the updated map information of the map block B in step S5, and the latest data of this map block exists. If it is determined not to do so (step S6: NO), the process ends. That is, as long as the latest data of the map blocks around the updated map block exists adjacent to each other, the control circuit 2 can sequentially update the map information of the map block B by repeating the processes of steps S5 to S7.

  For example, as shown in FIG. 4B, the control circuit 2 acquires the version information V of the map information of, for example, adjacent one or more blocks around the updated map block B from the server 51, and as a result, the new It can be specified that the version information V of the map block B including the correct routes K1 and K2 is the latest version. At this time, the control circuit 2 can update the map information related to the map block Ba which is the latest version from the server 51, and as shown in FIG. 4C, the map information of the map block Ba including the routes K1 and K2. Can be updated.

  Thereafter, similarly, as shown in FIGS. 5A to 5C, the control circuit 2 sequentially obtains the version information V of the map information of the adjacent one block around the updated map block Ba from the server 51 sequentially. As a result of collating this version information V, the map information of the latest version of the map block Bb is acquired. When the map blocks along the routes K1 and K2 are sequentially updated in this way, the map information relating to the map blocks Ba to Bc along the routes K1 and K2 of the new road is obtained as shown in FIG. 5 (c). Everything can be updated.

  Next, the control circuit 2 performs route search processing at the position where the host vehicle exists (see the position of the marker M). In this case, there are three routes K, K1, and K2 as routes to the destination Z. Although details of the route search function of the control circuit 2 are omitted, generally, when a route search is performed with priority given to a distance, the route K1 can be selected because the route that becomes the shortest route is the route K1.

  For example, when the technique of Patent Document 4 is applied to the new road configuration of this embodiment, a route search can be performed after acquiring map information updated along the guide route. However, since only the map information along the route K is updated, the map information of the map blocks along the routes K1 and K2 is not updated even if the roads of the routes K1 and K2 are newly created. Therefore, the original optimum route to the destination Z is not set. The user may accidentally enter the route K or the route K2. For example, when the route search is performed and the route K2 is entered, the route search process may be performed so as to enter the route K2 as it is. Then, there is a possibility that the route to the destination Z is different from the original optimum route K1.

  According to the present embodiment, the control circuit 2 sequentially updates the map information of the map block B determined to be updated for the map block B around the once updated map block B. Even if the map is created, the map information is sequentially updated along the road. Thereby, the map information of the map block until it reaches at least the destination Z can be updated.

  Even if the destination Z is routed far from the current position of the host vehicle, the map information of the map block B through which the routes K1 and K2 that can move to the far destination Z are passed is quickly updated. It is possible to quickly set the original optimum route to the destination Z.

  The control circuit 2 identifies the current position of the vehicle, collates the current position of the vehicle with the map information around the current position, and determines that the vehicle has moved out of the path K and moved into the nonexistent area. Since it is updated from the map information of the map block Bo in the non-existent area on the condition that it can be updated, it can be updated from the map information of the map block Bo around the area where there is a possibility that another route exists, the map of the unnecessary map block The possibility of updating information can be reduced. That is, the map information necessary for route setting can be updated accurately.

  Since the control circuit 2 searches and sets the guide route after all the map information of the map block B up to the destination Z is updated, the guide route K1 is searched after all the map information is updated. It is possible to set an optimum guide route.

  When it is determined that the control circuit 2 has deviated from the route K, the control circuit 2 makes a communication request to the server 51 at that time and acquires map information up to the destination Z. The number of communication requests to the server 51 from the vehicle side can be reduced compared to the configuration in which map information is acquired every time the vehicle moves to B, and the communication processing burden on the server 51 side can be reduced.

  When the control circuit 2 determines that the vehicle has deviated from the route K, it is required that the current position of the vehicle deviates from the route K continuously for a predetermined number of times (10 times), for example, every predetermined time (1 second) interval. Since it is determined that the vehicle has deviated from the route K, it is possible to increase the certainty in determining whether the vehicle is located on the route K or deviated from the route K. In addition, it is possible to reduce the number of request processes for requesting map information.

(Second Embodiment)
FIGS. 6 and 7 show a second embodiment of the present invention. The difference from the first embodiment is that the number of times determined that the current position of the vehicle is out of the possible region is predetermined. It is in the place where it updates from the map information of the said map block on condition that it is more than the number of times. The same parts as those in the previous embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  For example, if the map information update request process of the map block B is performed from the navigation device 1 side, for example, if the current position of the vehicle cannot be correctly specified due to the influence of the position measurement error by the position detector 3, the position measurement error Each time an abnormality occurs due to the map update request processing from the navigation device 1 to the map server system 50 frequently occurs. Then, the processing load of the map server system 50 increases, and the business operator who manages the map server system 50 cannot provide a service to many users. Therefore, an embodiment is shown in which the number of requests for requesting map information from the vehicle navigation apparatus 1 to the server 51 can be reduced.

FIG. 6 is a flowchart schematically showing processing operations performed by the control circuit. Moreover, FIG. 7 is explanatory drawing which shows the aspect which concerns on the operation | movement roughly.
When the control circuit 2 detects that the route has deviated from the preset route K and acquires the abnormality information (step T1: YES), the control circuit 2 takes a predetermined time (for example, 1 hour) from the previous time when the abnormality information was acquired, if necessary. ) On the condition that the above has elapsed, it is detected that the region has deviated from the possible region, and the following steps T3 to T11 are performed. If this condition is not satisfied, the process is terminated.

  If the control circuit 2 determines that both conditions of Steps T1 and T2 are satisfied, it determines whether or not it is stored as an abnormality occurrence location (Step T3). If it is stored as an occurrence location of an abnormality (step T3: YES), the control circuit 2 increments (+1) the number of occurrence locations (occurrence count) outside the possible area (step T4). If no abnormality has occurred in the place (step T3: NO), the number of occurrences of the abnormality occurrence place is set to 1 (step T5).

  Next, the control circuit 2 determines whether or not the number of occurrences of the corresponding place is greater than a predetermined number (for example, twice) (step T6). At this time, the control circuit 2 determines that it has deviated from the possible area on condition that the number of occurrences is greater than the predetermined number (step T7). Further, the control circuit 2 acquires the version information V of the corresponding map block B from the server 51 (step T8). Thereafter, when it is determined that the latest data of the map block B exists, the control circuit 2 acquires and updates the map information of the map block B from the server 51 (step T10), and clears the history of the place where the abnormality occurred. The process is repeated from step T1. If it is determined NO in step T6, the processing is repeated from step T1.

  Details of the actual operation are as described below. For example, as shown in FIG. 7A, when the control circuit 2 detects that a predetermined distance (for example, 20 m) is deviated from the path K, the location X of the location X is determined as the location where the abnormality has occurred (see the position of the marker M1). The number of occurrences is associated with 1 and stored in the built-in memory of the control circuit 2. Thereafter, as shown in FIG. 7B, when the control circuit 2 detects that the control circuit 2 has moved out of the vicinity of the path K, the number of occurrences of the place Y is set to 1 as the occurrence place (refer to the position of the marker M2). The information is stored in the built-in memory of the control circuit 2 in association with each other.

  Thereafter, as shown in FIG. 7C, it is determined that the control circuit 2 has deviated from the route K when the current position of the vehicle is specified as the position of the marker M3. The location at this time is not necessarily the same location. Therefore, it is preferable to recognize the same place by the method shown in FIG. That is, the control circuit 2 determines whether or not it is located within the range of the predetermined radius R from the occurrence location X deviating from the path K at the first time and the second time, and is located within the range of the predetermined radius R. (See the marker M3 in FIG. 7 (d)), and it may be determined that the occurrence location is the same on the condition that the location is within a predetermined radius R.

  In the case of the positional relationships shown in FIGS. 7A to 7C, the position M3 of the vehicle that has deviated from the route K for the third time is within the range of the radius R from the position M1 of the vehicle that deviated from the route K for the first time. Therefore, the occurrence location that deviates from the route K for the third time is specified as the location X. Therefore, the number of occurrences of the place X becomes a predetermined number (two times) or more. At this time, the map information version information of the map block B corresponding to the place X is acquired for the first time, and the map information is updated when the latest data exists. .

  According to the present embodiment, since the number of determinations determined that the current position of the vehicle deviates from the route K is greater than or equal to a predetermined number of times, the map information of the map block B is updated. The map information of the map block B can be surely updated by confirming that the place is a non-existent area. Moreover, it is possible to reduce the number of request processes for requesting map information from the navigation device 1 side.

(Third embodiment)
FIG. 8 shows a third embodiment of the present invention. The difference from the previous embodiment is that when the current position is specified, the map of the map block is specified each time the position is specified in a new map block. The information is about to be updated. The same parts as those of the above-described embodiment are denoted by the same reference numerals, description thereof is omitted, and only different parts will be described below. FIG. 8 schematically shows the updated map block.

  As shown in FIG. 8, the control circuit 2 specifies the current position of the vehicle based on the current position detected by the position detector 3 and enters a new map block B. When version information V is requested for map block B at the current position including, for example, the vicinity of one adjacent block together with the map block (see hatched portion B1 in FIG. 8), and it is determined that new map information exists by this version information V, Update the map information of the map block B. Thereby, the map information of the map block B can be updated when the vehicle is traveling, and the map information can be sequentially updated when the vehicle is traveling on the route K.

(Other embodiments)
The present invention is not limited to the above circumstances, and can be modified or expanded as follows, for example.
In the first embodiment, the control circuit 2 cannot exist by detecting that the current position of the vehicle deviates from the route K (corresponding to the possible area) after performing the map matching process by the map matching function. Although the embodiment has been shown in which it is determined to be located in an area and is updated from the map information in the map block B in the non-existent area, the present invention is not limited to this, and has deviated without performing a map matching process May be detected.

  Although the embodiment in which the vehicle map information update function is mounted on the navigation device 1 is shown, it may be mounted on the map server system 50 side. Although the embodiment applied to a vehicle has been shown, the present invention can be applied to various uses such as a pedestrian and a portable object.

  Although the embodiment has been described in which the control circuit 2 of the navigation device 1 performs the determination process of the necessity of update and the update process, the server 51 may perform the update process. You may apply to the process which sets not only the optimal route | route to the destination Z but the optimal route | route to destination points, such as a waypoint.

  Although the embodiment has been described in which it is determined whether or not the update of the map information of one block around the updated map block is necessary and the map information is updated when it is determined that the update is necessary, a plurality of surrounding map blocks It may be determined whether or not updating is necessary, and the map information may be updated when it is determined that updating is necessary.

1 is a block diagram schematically showing an electrical configuration of a first embodiment of the present invention. Illustration of route Flow chart schematically showing processing operation (A)-(c) Explanatory drawing which shows the time change of an update process (the 1) (A)-(c) Explanatory drawing which shows the time change of an update process (the 2) FIG. 3 equivalent view according to the second embodiment of the present invention. (A)-(c) Explanatory drawing which shows an example of an occurrence place and the frequency | count of an occurrence, (d) Explanatory drawing of an occurrence place Explanatory drawing of the update process which concerns on the 3rd Embodiment of this invention

Explanation of symbols

In the drawings, reference numeral 1 denotes a vehicle map information update device (navigation device), and 2 denotes a control circuit (first update means, second update means, execution means, position specifying means).

Claims (8)

When the map information of the map block where the moving body is located among the plurality of map blocks constituting the map information or the neighboring map block adjacent to the map block is not the latest, the map information of the map block which is not the latest is downloaded from the outside First updating means for updating;
When the map information of the map block that is not the latest is updated and the map information of the neighboring map block adjacent to the map block is not the latest, the map information of the map block that is not the latest is updated by downloading from the outside. Update means;
A moving body map information updating apparatus comprising: an executing means for repeating the updating operation of the second updating means until all of the map information of the surrounding map block is updated.   The first update means is incapable of being present on the condition that the position of the moving body is checked against map information around the position of the moving body and it is determined that the moving body is out of the possible area. The map information update device for a moving body according to claim 1, wherein the map information is updated from the map information of the map block in the area.   The position of the mobile body specified every predetermined time by the position specifying means is determined to be out of the existing area on condition that it is continuously out of the existing area. Map information update device for mobile objects.   The first updating means updates from the map information of the map block in the non-existent region on condition that the number of determinations determined that the position of the moving object is out of the existing region is a predetermined number or more. The mobile body map information updating device according to claim 2 or 3, characterized in that: Position specifying means for specifying the current position of the moving object;
A mobile object map comprising: update means for updating map information of a map block each time the mobile object moves to a position in a new map block for map information divided into a plurality of map blocks Information update device.   6. The mobile map information updating apparatus according to claim 5, wherein said updating means also updates map information of map blocks around said map block when updating the map information of said new map block.   7. After all the map information that can be updated in the map block is updated by the update means and execution means of the map information update device for mobile body according to any one of claims 1 to 6, the guide route to the destination point is searched. A navigation device comprising setting means for setting. A mobile body map information update device according to any one of claims 1 to 6, and a mobile body map information update device comprising: a server that transmits map information to the mobile body map information update device. system.

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