JP7060960B2 - Map information provision system, map information provision method, and map information provision program - Google Patents

Description

The present invention relates to a map information providing system for providing map information, a map information providing method, and a map information providing program.

Conventionally, as an example of a map information providing system, a navigation system that provides driving guidance such as route guidance to a destination to a driver is known (see, for example, Patent Document 1). Most of such navigation systems provide map information using the map information for navigation stored in the internal storage unit, search for the optimum route to the destination, etc., and based on the result. Perform route guidance, etc.

Here, some navigation systems are connected to a network environment and receive appropriate updates of navigation map information from a server on the network. With this update, the navigation system can recognize newly constructed roads and the like, so that the accuracy of guidance can be improved.

Japanese Unexamined Patent Publication No. 2017-173286

Here, in the navigation system as described above, the update of the map information for navigation is often performed at a fixed interval because the update process takes time and cost. For this reason, the map information for navigation tends to be updated over a long period of time, for example, every six months. As a result, depending on the timing at which the driving guidance is given, there may be a discrepancy between the map information provided by the navigation system and the actual road environment, which may give the driver a sense of discomfort.

Up to this point, the discomfort that the recipient feels in the map information provided by the map information providing system has been described by taking the navigation system as an example. However, such a feeling of strangeness can generally occur not only in a navigation system but also in a system that provides map information.

Therefore, as an example, the subject of the present invention is to provide a map information providing system, a map information providing method, a map information providing program, etc., which can provide map information while suppressing a sense of discomfort felt by the recipient. Be done.

In order to solve the above-mentioned problems and achieve the object, the map information providing system of the present invention according to claim 1 represents a first road network composed of a plurality of roads and is updated at the first update time. The first map information and the second road network composed of some of the plurality of roads are represented, and at least a part of the first renewal time is different from the first renewal time. A storage unit that stores the two map information, and the first road network represented by the first map information using the second map information at the time of updating the second map information even if it is not the first update time. Of the update unit for updating the part of the roads in the above and other roads other than the part of the roads in the first road network represented by the first map information, the updates were made based on the second map information. It is characterized by having a map information providing unit that provides map information so that the recipient can recognize the related roads related to the renewal road.

It is a schematic block diagram which shows the navigation system which concerns on embodiment of the map information providing system of this invention. It is a schematic diagram showing how the map information for navigation is basically updated in a long-term span, and the map information for autonomous driving is updated in a short-term span. It is a schematic diagram which shows how the map information for navigation is updated not only in the basic long-term span shown in FIG. 2 but also in a short-term span. It is a flowchart which shows the flow of the update process of the navigation map information executed by the navigation update part shown in FIG. It is a flowchart which shows the flow of processing in the operation guidance of the map information providing part shown in FIG. It is a figure which shows typically the situation that the road network for navigation represented by the map information for navigation includes the related road related to the update road in the map information for autonomous driving. It is a flowchart which shows the flow of the processing of the driving guidance in the modification of the navigation system of the embodiment shown in FIGS. 1 to 6.

Hereinafter, embodiments of the present invention will be described. The map information providing system according to the embodiment of the present invention has the first map information updated at the first update time and the second map updated at the second update time which is at least partially different from the first update time. It is equipped with a storage unit for storing information. Further, this map information providing system includes an update unit that updates the first map information using the second map information when the second map information is updated, even if it is not the first update time. Further, this map information providing system provides map information so that the recipient can recognize the related roads related to the updated roads updated based on the second map information among the road networks represented by the first map information. It is equipped with a map information providing department.

In the map information providing system of the present embodiment, the first map information and the second map information whose update times are different from each other for at least a part of the time are stored in the storage unit. Then, when the second map information is updated, the update unit updates the first map information using the second map information. This enhances the consistency between the actual road environment and the first map information.

At this time, if there is a difference in road coverage between the first map information and the second map information, among the updated first map information, the related roads related to the updated road by the second map information are actually Even if a discrepancy with the road is suspected, it will be left as it is. According to the map information providing system of the present embodiment, the map information is provided so that the recipient can recognize the above-mentioned related roads in the updated first map information. Therefore, even if there is a discrepancy between the related road and the actual road, the recipient can recognize the possibility of such a discrepancy. According to the map information providing system of the present embodiment, it is possible to provide the map information while suppressing the discomfort felt by the recipient in this respect as well.

Here, in the map information providing system of the present embodiment, the above-mentioned first map information is navigation map information having image information for driving guidance to the driver of the vehicle. Further, the above-mentioned second map information is map information for automatic driving having control information for automatic driving of the vehicle.

In general, map information for autonomous driving is required to have high consistency with the actual road environment due to the nature of being used for autonomous driving. Therefore, the map information for automatic driving is updated more frequently in a short-term span than the map information for navigation, which is updated in a long-term span as described above. In the map information providing system of the present embodiment, when the update unit updates the map information for automatic driving, the map information for navigation is updated using the map information for automatic driving. This enhances the consistency between the actual road environment and the map information for navigation.

At this time, the map information for autonomous driving is described with high consistency with the actual roads for the main roads used for autonomous driving, but it tends to be omitted as non-target roads for other narrow streets. be. Therefore, when the map information for navigation is updated using the map information for autonomous driving, the main roads are updated, but the non-target roads in the vicinity and related to this main road are the actual roads. Even if a discrepancy is suspected, it will be left as it is.

According to the map information providing system of the present embodiment, the map information is provided so that the driver can recognize the above-mentioned related roads in the updated navigation map information. Therefore, even if there is a discrepancy between the related road and the actual road, the driver can recognize the possibility of such a discrepancy. According to the map information providing system of the present embodiment, it is possible to provide the map information while suppressing the discomfort felt by the driver in this respect as well.

Further, in the map information providing system of the present embodiment, the map information providing unit includes a road determination unit and a display unit. The road judgment unit determines whether or not there is a related road in the road network. The display unit displays the road network so that the existence of the related road can be recognized when the road determination unit determines that the related road exists.

According to the map information providing system of the present embodiment, the road network is displayed so that the presence of the related road can be recognized on the display unit, so that it is possible to further suppress the discomfort felt by the driver and provide driving guidance.

Further, in the map information providing system of the present embodiment, the map information providing unit includes a route determination unit and a notification unit. The route determination unit determines whether or not the guidance route in the driving guidance includes a related road. When the route determination unit determines that the guide route includes a related road, the notification unit notifies the existence of the related road.

According to the map information providing system of the present embodiment, since the existence of the related road in the guidance route is notified, it is possible to further suppress the discomfort felt by the driver and perform the driving guidance.

Further, in the map information providing system of the present embodiment, the map information providing unit includes a road determination unit and a guidance unit. The road determination unit determines whether or not the above-mentioned related roads exist in the above-mentioned road network. When the road judgment unit determines that a related road exists, the guidance unit provides driving guidance without using the related road.

According to this map information providing system, since the related roads are not used for driving guidance in the first place, it is possible to further suppress the discomfort felt by the driver and provide driving guidance.

Further, the map information providing method according to the embodiment of the present invention includes an update determination step, an update step, and a map information providing step. The update determination process is the second map information of the first map information updated at the first update time and the second map information updated at the second update time which is at least partially different from the first update time. Is the process of determining whether or not has been updated. The update process is a step of updating the first map information using the second map information when it is determined that the second map information has been updated in the update determination process even if it is not the first update time. .. In addition, the map information providing process provides map information so that the recipient can recognize the related roads related to the updated roads updated based on the second map information among the road networks represented by the first map information. It is a process.

Also in the map information providing method of the present embodiment, the map information is provided so that the recipient can recognize the related roads. As a result, the map information can be provided while suppressing the discomfort felt by the recipient.

Further, the map information providing program according to the embodiment of the present invention causes the computer to execute the map information providing method of the above-described embodiment. As a result, since the above-mentioned map information providing method is executed, it is possible to provide the map information while suppressing the discomfort felt by the recipient.

Hereinafter, examples of the present invention will be specifically described with reference to the drawings.

FIG. 1 is a schematic block diagram showing a navigation system according to an embodiment of the map information providing system of the present invention.

The navigation system 1 shown in FIG. 1 is mounted on a vehicle having an automatic driving function to provide driving guidance to the driver, and is a storage unit 10, a navigation update unit 20, and an automatic driving update unit. 30 and a map information providing unit 40 are provided.

The storage unit 10 stores the navigation map information 11 (first map information) and the automatic driving map information 12 (second map information) whose update times are different from each other for at least a part of the time. The navigation map information 11 has image information for driving guidance to the driver of the vehicle. The map information 12 for automatic driving has control information for automatic driving of the vehicle.

The navigation update unit 20 (update unit) basically updates the navigation map information 11 at long-term update intervals such as once every six months. The update of the navigation map information 11 is executed in response to an instruction from the server when the update information by the creator of the navigation map information 11 is obtained on the server on the network to which the navigation system 1 is connected. ..

On the other hand, the automatic driving update unit 30 is updated by an instruction from the server based on information such as road construction collected during a short span such as one month in the above server. As described above, since the map information 12 for automatic driving is required to have high consistency with the actual road environment due to the nature of being used for automatic driving, the map information for navigation that is updated over a long period of time as described above. It will be updated in a shorter span than 11.

FIG. 2 is a schematic diagram showing how the map information for navigation is basically updated in a long-term span and the map information for automatic driving is updated in a short-term span.

In FIG. 2, the basic update time (first update time) of the navigation map information 11 and the update time (second update time) of the automatic driving map information 12 over the two years of 2018 and 2019 are shown. ) And are shown in tabular form.

As shown in FIG. 2, the navigation map information 11 is updated at long-term update intervals such as once every six months. In addition, the update is performed collectively for all the maps of the whole country represented by the navigation map information 11.

On the other hand, the map information 11 for automatic driving is updated every month. Then, the update is performed for each area when the map information 11 for automatic driving is divided into a plurality of areas. In addition, updates for each area will be carried out according to information such as road construction aggregated for that area during the month. Areas where such information has not been aggregated in a month will not be updated. For example, in the example of FIG. 2, in January 2018, all areas A to D were updated, but in May of the same year, only area B was updated.

Here, in this embodiment, the navigation update unit 20 does not have to be updated every six months as shown in FIG. 2, but has the following short-term span, specifically, the update time every month. Is also updated.

FIG. 3 is a schematic diagram showing how the navigation map information is updated not only in the basic long-term span shown in FIG. 2 but also in the short-term span.

As shown in FIG. 3, the navigation update unit 20 basically updates all the maps of the whole country at once every six months. In addition to this, monthly updates will also be made. This monthly update is performed using the map information 11 for automatic driving. That is, when there is an area updated by the automatic driving map information 11 in any month, the navigation map information 12 is updated to reflect the updated information of the area. However, if it overlaps with the month of batch update that is performed every six months, it is expected that the update contents in each area in the automatic driving map information 11 will be included in the batch update contents. The update is executed with priority. For example, in the example of FIG. 2, in January 2018, the navigation update unit 20 is updated nationwide, and in May of the same year, the update content of area B in the automatic driving map information 11 is updated. Updates are being made based on.

Next, as an example of the map information providing method of the present invention, the process executed by the navigation system 1 described above will be described.

First, the navigation update unit 20 shown in FIG. 1 executes the update as shown in FIG. 3 according to the following processing flow.

FIG. 4 is a flowchart showing the flow of the navigation map information update process executed by the navigation update unit shown in FIG.

The update process represented by the flowchart of FIG. 4 starts when the power is turned on to the navigation system 1 shown in FIG. When the process starts, the navigation update unit 20 first determines whether or not the update information for batch update has been provided by the manufacturer of the navigation map information 11 (step S101). When the update information is provided (Yes determination in step S101), the navigation update unit 20 updates the navigation map information 11 using the update information for the batch update (step S102), and the month. Ends the update process.

On the other hand, when the update information for batch update is not provided (No determination in step S101), the navigation update unit 20 has an area updated by the automatic driving update unit 30 in the automatic driving map information 11. It is determined whether or not (step S103). When the update area exists (Yes determination in step S103), the navigation update unit 20 updates the navigation map information 11 based on the update content of the update area in the automatic driving map information 11 (step S104). End the update process. Further, when the update area does not exist in the automatic driving map information 11 (No determination in step S103), the navigation update unit 20 ends the update process without updating the navigation map information 11.

The navigation update unit 20 shown in FIG. 1 updates the navigation map information 11 using the automatic driving map information 12 when the automatic driving map information 12 is updated by such an update process. Will be.

Here, in the present embodiment, the road in the automatic driving road network represented by the automatic driving map information 12 is given an identifier common to the identifier of the corresponding road in the navigation road network represented by the navigation map information 11. ing. Then, the navigation update unit 20 transfers the road in the navigation road network to which the identifier given to the updated road in the automatic driving road network and the common identifier are given to the updated road in the automatic driving map information 12. Update based on the updated contents of. As a result, the navigation update unit 20 can reflect the update content of the update area in the automatic driving map information 12 in the navigation map information 12.

In this embodiment, a permanent identifier is assigned to each road link, which makes it possible to identify the updated road link even with the above-mentioned update. Further, unlike the present embodiment, the identifier may be changed at the time of update. In this case, the updated road link can be specified by separately storing the correspondence table of the identifier before and after the change.

In addition, unlike this embodiment, the correspondence relationship between the road in the automatic driving road network represented by the automatic driving map information 12 and the road in the navigation road network represented by the navigation map information 11 does not depend on the identifier. May be obtained as follows. For example, it may be acquired by estimating the above correspondence from common elements such as the latitude and longitude of the start point and the end point of the road in each road network, the road shape including the latitude and longitude of the intermediate point, and the like.

Alternatively, instead of a common identifier as in the present embodiment, a separate identifier may be assigned to the road in the road network for automatic driving and the road in the road network for navigation represented by the navigation map information 11. good. In this case, the above correspondence may be acquired by separately storing the correspondence table of these two types of identifiers and referring to the correspondence table.

Then, in the navigation system 1 of the present embodiment, the map information providing unit 40 provides the map information in the form of driving guidance to the driver of the vehicle by using the navigation map information 11 updated in this way. Here, in the present embodiment, the map information providing unit 40 has a form in which the driver can recognize the related roads related to the updated roads updated based on the automatic driving map information 12 in the navigation road network. Provide driving guidance.

In this embodiment, the automatic driving is performed on a main road such as a highway or an arterial road. Therefore, the map information 12 for automatic driving is created for only these main roads. On the other hand, the navigation map information 11 is basically created for all roads. As an example of the road related to the updated road in the map information 12 for automatic driving, in the road network for navigation, the road exists near the updated road or is connected to the updated road, but the map information 12 for automatic driving does not. The target narrow streets, etc. can be mentioned. The map information providing unit 40 is not sure whether the related roads such as this narrow street have been changed by the road construction, but the driver can recognize that the related roads may be changed together with the updated road. Provide driving guidance in the form.

The map information providing unit 40 includes a road determination unit 41, a display unit 42, a route search unit 43, a route determination unit 44, a guidance unit 45, and a notification unit 46.

The road determination unit 41 determines whether or not the above-mentioned related roads exist in the navigation road network represented by the navigation map information 11. When the road determination unit 41 determines that the related road exists, the display unit 42 displays the navigation road network so that the existence of the related road can be recognized. Although not specified here, as an example of such a display, the related road may be displayed in a color different from other roads such as red, or the related road may be displayed thinner than other roads. Can be mentioned.

The route search unit 43 searches for a guide route to the destination based on the navigation map information 11. At this time, in this embodiment, the route search unit 43 also includes the above-mentioned related routes as a search target and performs a route search. The route determination unit 44 determines whether or not the guide route of the search result includes the related road. The guide unit 45 provides driving guidance along the guide route of the search result. When the route determination unit 44 determines that the guide route includes a related road, the notification unit 46 notifies the driver of the existence of the related road.

Although not specified here, as an example of the notification by the notification unit 46, for example, before the driving guidance by the guidance unit 45, it is stated that the guidance route to be guided includes a related road whose change due to construction is unknown. Notification by voice or text message can be mentioned. In addition to this, for example, during the implementation of driving guidance by the guidance unit 45, it may be notified that the vehicle will soon reach the related road as described above at a predetermined stage before the vehicle approaches the related road. ..

Such driving guidance by the map information providing unit 40 is performed in the following processing flow.

FIG. 5 is a flowchart showing the flow of processing in the driving guidance of the map information providing unit shown in FIG.

The process represented by this flowchart starts when the navigation system 1 shown in FIG. 1 is powered on. When the process starts, first, the position of the vehicle is acquired by GPS (Global Positioning System) or the like mounted on the vehicle (step S201). Next, the driver inputs the navigation conditions via the predetermined input unit in the navigation system 1 (step S202). Here, the destination of driving and the like are input.

Next, the road determination unit 41 determines whether or not there is a related road related to the updated road in the automatic driving map information 12 in the navigation road network represented by the navigation map information 11 (step S203). ..

FIG. 6 is a diagram schematically showing a situation in which the navigation road network represented by the navigation map information includes related roads related to the updated road in the automatic driving map information.

In FIG. 6, the state in which the navigation map information 11 is updated using the automatic driving map information 12 is shown by the automatic driving road network Rn12 represented by the automatic driving map information 12 and the navigation map information 11 represented by the navigation map information 11. It is indicated by the road network Rn11. In the example here, a simple road network including three main roads R11, R12, R13 and two narrow streets R14, R15 is exemplified. The main roads R11, R12, and R13 referred to here are all targeted for automatic driving, and the two narrow streets R14 and R15 are not targeted for automatic driving. Therefore, the road network Rn12 for automatic driving is composed of only three main roads R11, R12, and R13. On the other hand, the navigation road network Rn11 that comprehensively presents the road network to the driver is composed of both three main roads R11, R12, R13 and two narrow streets R14, R15.

Here, in the example of FIG. 6, one main road R11 diagonally from the upper left to the lower right on the map is updated. In the updated road network Rn12a for autonomous driving, the updated road R11a, which is the main road R11, has a changed route extending from the connection point P11 with one narrow street R14 to the lower left. It has become. In this embodiment, regarding such a route change on an actual road, the update of the navigation map information 11 and the automatic driving map information 12 deletes the information on the road before the change and the road after the change. It is done in the form of adding information about. That is, in the example of FIG. 6, when updating each map information, the information about the main road R11 is deleted and the information about the updated road R11a is added.

The update of the navigation map information 11 is performed so as to reflect the updated road R11a in the updated automatic driving road network Rn12a. As described above, in this embodiment, a permanent identifier is given to each road link, which makes it possible to identify the updated road link even if the above update is inserted. .. Further, unlike the present embodiment, the identifier may be changed at the time of update. In this case, the updated road link can be specified by separately storing the correspondence table of the identifier before and after the change. In this embodiment, by specifying the road via such an identifier, the updated road R11a in the updated automatic driving road network Rn12a is reflected in the navigation map information 11.

As a result, in the updated navigation road network Rn11a, one narrow street R14 is connected to the updated road R11a at the connection point P11, but the other narrow street R15 is separated from the updated road R11a. Will be. In this navigation road network Rn11a, the three main roads R11, R12, and R13 are based on the latest information on road construction, but the two narrow streets R14 and R15 are road construction. It is unknown if it has been changed by. In the example of FIG. 6, both of these two narrow streets R14 and R15 are related roads related to the renewal road R11a.

Hereinafter, the continuation of the flowchart of FIG. 5 will be described with reference to FIG. When it is determined in step S203 that the related road exists (Yes determination in step S203), the display unit 42 displays a navigation map image including the navigation road network so that the existence of the related road can be recognized (step S204). ). In the example of FIG. 6, the two narrow streets R14 and R15 corresponding to the related roads are displayed separately from the other three main roads R11, R12 and R13 by a method such as changing the display color and display density. To.

The example of FIG. 6 is an example in which the narrow street R14, which is a related road, is separated from the renewal road R11a, but the related road may overlap with the renewal road depending on the content of the renewal. Even in such a case, the related road is displayed separately from other roads including the renewal road.

On the other hand, when it is determined in step S203 that the related road does not exist (No determination in step S203), the display unit 42 displays the navigation map image as it is (step S205).

Subsequently, the route search unit 43 searches for a guide route to the destination input in step S202 starting from the position of the vehicle acquired in step S201 (step S206). Then, the route determination unit 44 determines whether or not the above-mentioned related road is included in the searched guide route (step S207).

When the guide route includes a related road (Yes determination in step S207), the guide unit 45 gives driving guidance while notifying the existence of the related road (step S208), and the process ends.

In the example of FIG. 6, when the guide route includes the narrow streets R14 and R15 which are unknown whether they have been changed by the road construction as described above, the notification is given by voice or text message. As described above, this notification may be given before the start of the driving guidance or during the driving guidance.

On the other hand, when the guide route does not include the related road (No determination in step S207), the guide unit 45 performs normal driving guidance based on the guide route (step S209), and the process ends.

Next, a modification of the embodiment described so far will be described. In this modification, the processing flow in the operation guidance is different from the processing flow represented by the flowchart of FIG.

FIG. 7 is a flowchart showing a flow of driving guidance processing in a modified example of the navigation system of the embodiment shown in FIGS. 1 to 6.

In the flowchart shown in FIG. 7, each process up to the route search (step S301) described later is equivalent to each process of steps S201 to S205 in the flowchart of FIG. Therefore, in FIG. 7, each process up to the route search (step S301) is given a step code similar to the step code shown in FIG. 5, and the following describes the equivalent processes. Duplicate explanation is omitted.

In this modification, the route search in step S301 is performed without using the above-mentioned related road. Referring to the example of FIG. 6, in this modification, the route search is performed using only the update road R11a and the two main roads R12 and R13. In the subsequent driving guidance (step S302), since the searched guidance route does not include the related road, the normal driving guidance along the guidance route is performed.

That is, in this modification, the guide unit 45 receives the result of the route search performed by the route search unit 43 without using the related road, and follows the guide route that does not include the related road, and the related road is used. Driving guidance is provided without any particular awareness.

In addition, unlike any of the above-described embodiment and modification, the route search unit 43 may perform the route search and the guide unit 45 may perform the operation guidance as follows. That is, even if the route search 43 searches for a route using the related road and the guide unit 45 provides driving guidance ignoring the related road when the guide route includes the related road. good. As a specific example, for example, when one of the four-way junctions in the guidance route is a related road, the driving guidance is performed as the three-way junction ignoring that one. Alternatively, when one of the Y-shaped roads is a related road, there is an example in which the driving guidance is performed as a two-way junction (T-junction) by ignoring that one.

Further, the route search in the route search unit 43 may handle the related road as follows. That is, the route search may be performed by weighting the related roads so that the related roads are not used for the route as much as possible. Examples of such weighting include, for example, weighting so that the route is used only when the destination cannot be reached without passing through the related road.

The navigation system 1 of this embodiment is configured by a computer. The computer stores a map information providing program that causes the computer to execute the flowcharts of FIGS. 4 and 5 or the map information providing method represented by the flowcharts of FIGS. 4 and 7. By operating the computer according to this map information providing program, the navigation system 1 shown in FIG. 1 is constructed.

In the navigation system 1 of the embodiment and the modified example described above, when the automatic driving map information 12 (second map information) is updated by the navigation updating unit 20 (update unit), the automatic driving map information 12 is used. The navigation map information 11 (first map information) is updated using the navigation map information 11. As a result, the consistency between the actual road environment and the map information for navigation is enhanced, so that the map information can be provided in the form of driving guidance while suppressing the discomfort felt by the driver.

Here, in the navigation system 1 of the present embodiment, the navigation update unit 20 includes a road in the automatic driving road network represented by the automatic driving map information 12 and a road in the navigation road network represented by the navigation map information 11. , Is obtained by referring to the common identifier between the two. Then, the navigation update unit 20 changes the updated road in the automatic driving road network, the road in the navigation road network corresponding to the above correspondence, to the updated content of the updated road in the automatic driving map information 12. Update based on. As a result, the updated information of the road in the map information 12 for automatic driving is reflected in the map information 11 for navigation, so that it is possible to further suppress the discomfort felt by the driver and provide driving guidance.

Further, in this navigation system 1, the navigation update unit 20 uses the navigation update information separately from the automatic driving map information 12 for navigation at a frequency lower than the update frequency of the automatic driving map information 12. The map information 11 is updated. In this embodiment, the navigation update information is information provided to the server on the network by the manufacturer of the navigation map information 11. As a result, the navigation map information 11 is updated to a state suitable for driving guidance, so that driving guidance can be performed while further suppressing the discomfort felt by the driver.

Further, according to this navigation system 1, map information in the form of driving guidance is provided in a form that the driver can recognize the above-mentioned related roads in the updated navigation map information 11. Therefore, even if there is a discrepancy between the related road and the actual road, the driver can recognize the possibility of such a discrepancy. According to this navigation system 1, it is possible to provide driving guidance while suppressing the discomfort felt by the driver in this respect as well.

Further, according to this navigation system 1, when the existence of a road related to the updated road is confirmed, the existence of the related road can be recognized by changing the display color and the display density on the display unit 42. The net is displayed. As a result, it is possible to provide driving guidance while further suppressing the discomfort felt by the driver.

Further, according to the navigation system 1 of the above-described embodiment, since the existence of the related road in the guidance route is notified, it is possible to further suppress the discomfort felt by the driver and perform the driving guidance.

Further, according to the navigation system 1 of the modified example described above, since the related road is not used for the driving guidance in the first place, it is possible to further suppress the discomfort felt by the driver and perform the driving guidance.

It should be noted that the present invention is not limited to the examples described above, but includes other configurations and the like that can achieve the object of the present invention, and the present invention also includes modifications and the like as shown below.

For example, in the above-described embodiment, the navigation system 1 shown in FIG. 1 is exemplified as an example of the map information providing system according to the present invention. However, the map information providing system referred to in the present invention is not limited to this. The map information providing system referred to in the present invention may be a system that provides map information on a network, such as Google Maps (registered trademark).

Further, in the above-described examples and modifications, as an example of the map information providing system according to the present invention, a navigation system 1 in which all the configurations shown in FIG. 1 are mounted on a vehicle is exemplified. However, the map information providing system referred to in the present invention is not limited to this. In the map information providing system referred to in the present invention, a part of the configuration may be mounted on the vehicle, and the remaining configuration may be constructed on the network and wirelessly connected to the configuration on the vehicle side. Alternatively, the vehicle may be equipped with only a display unit, and the rest of the configurations may be constructed on a network and wirelessly connected to the display unit on the vehicle side.

Further, in the above-described examples and modifications, as an example of the map information providing system according to the present invention, a navigation system that provides driving guidance so that the driver can recognize the related roads related to the updated road in the map information 12 for automatic driving. 1 is exemplified. However, the map information providing system referred to in the present invention is not limited to this. When the map information providing system according to the present invention updates the navigation map information 11 using the automatic driving map information 12, the updated navigation map information 11 is simply updated without performing the above-mentioned processing related to the related roads. It may be used to provide map information or the like.

1 Navigation system (map information provision system)
10 Memory unit 11 Navigation map information (1st map information)
12 Map information for autonomous driving (second map information)
20 Navigation update unit 30 Automatic operation update unit 40 Map information provision unit 41 Road judgment unit 42 Display unit 43 Route search unit 44 Route judgment unit 45 Guidance unit 46 Notification unit Rn11 Navigation road network Rn11a Updated navigation road network Rn12 Road network for automatic driving Rn12a Road network for automatic driving after update P11 Connection points R11, R12, R13 Main roads R14, R15 Narrow streets

Claims (7)

It represents the first road network composed of a plurality of roads, the first map information updated at the first update time, and the second road network composed of some of the plurality of roads. A storage unit that stores the second map information that is updated at the second update time, which is at least partially different from the first update time.
Even if it is not the first update time, when the second map information is updated, the update unit that uses the second map information to update the part of the roads in the first road network represented by the first map information. When,
Among the roads other than the partial roads in the first road network represented by the first map information, the recipient recognizes the related roads related to the updated roads updated based on the second map information. The map information providing department that provides map information as much as possible,
A map information providing system characterized by being equipped with. The first map information is navigation map information having image information for driving guidance to the driver of the vehicle.
The map information providing system according to claim 1, wherein the second map information is map information for automatic driving having control information for automatic driving of the vehicle. The map information providing department
A road determination unit that determines whether or not the related road exists in the first road network, and
A display unit that displays the first road network so that the existence of the related road can be recognized when the road determination unit determines that the related road exists.
The map information providing system according to claim 2, wherein the map information providing system is provided. The map information providing department
A route determination unit that determines whether or not the related road is included in the guidance route in the driving guidance, and a route determination unit.
When the route determination unit determines that the guide route includes the related road, a notification unit for notifying the existence of the related road and a notification unit.
The map information providing system according to claim 2 or 3, wherein the map information providing system is provided. The map information providing department
A road determination unit that determines whether or not the related road exists in the first road network, and
When the road determination unit determines that the related road exists, the guide unit that provides the driving guidance without using the related road and the guide unit.
The map information providing system according to claim 2 or 3, wherein the map information providing system is provided. It represents the first road network composed of a plurality of roads, the first map information updated at the first update time, and the second road network composed of some of the plurality of roads. In addition , the update determination step of determining whether or not the second map information of the second map information updated at the second update time, which is at least partially different from the first update time, has been updated.
Even if it is not the first update time, if it is determined in the update determination step that the second map information has been updated, the first road represented by the first map information using the second map information. The renewal process for renewing some of the roads in the network ,
Among the roads other than the partial roads in the first road network represented by the first map information, the recipient recognizes the related roads related to the updated roads updated based on the second map information. The map information provision process that provides map information as much as possible, and
A method of providing map information, which is characterized by being equipped with. A map information providing program, characterized in that the map information providing method according to claim 6 is executed by a computer.

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