JP2020112482A - Navigation device, navigation method and navigation program - Google Patents

Abstract

To properly perform control associated with reroute processing when a vehicle enters a service area or a parking area provided on a highway.SOLUTION: When a vehicle travels on a highway during route guidance, a facility information referring part 113 refers to highway facility information in a map information DB 105. A facility entry determination part 114 determines, based upon the current position measured through a GPS part 107, whether the vehicle enters facilities provided on the highway. When it is determined that the vehicle enters the facilities, a complicated facility determination part 115 determines, based upon the facility information referred to by the facility information referring part 113, whether the facilities are complicated facilities having a plurality of exiting routes. A reroute control part 116 changes, according to the determination result of the complicated facility determination part 115, control associated with reroute processing.SELECTED DRAWING: Figure 1

Description

The present invention relates to a navigation device, a method, and a program that perform control related to reroute processing when entering a service area or a parking area that is a rest facility attached to an expressway, for example.

Navigation devices for automobiles have become widespread and are used in many automobiles. Various improvements have been made to the navigation device. For example, Patent Document 1 described later discloses an invention in which, when an automobile enters a service area or a parking area of a highway, the map matching function is stopped until the vehicle returns to the main line. According to the present invention, it is possible to prevent the current position of a vehicle that has entered a service area or a parking area from being corrected on a highway or on a general road near the highway, appropriately grasp the current state of the vehicle, and appropriately Route guidance can be continued.

JP-A-8-292043

In recent years, control regarding reroute processing when a vehicle enters a service area or a parking area of an expressway has become a problem. That is, it is assumed that, while guiding the route traveling on the highway, the user deviates from the main line of the highway and stops at the service area or the parking area. In this case, the problem arises as to whether it is better to reroute because it is off the route, or to not reroute because it usually returns to the main line.

For example, if you do not reroute, if there is an exit (interchange) of a highway or a transfer route (junction) to another highway in the service area or parking area you entered, an appropriate route It may not be possible to give guidance. In this case, it is necessary to take measures such as searching for a route to the destination with the current position as the starting point and resetting the route.

On the contrary, when rerouting is performed, even if there is no exit (interchange) of the highway or a transfer route (junction) to another highway in the service area or parking area that entered, You will be notified that you have rerouted. Also, when rerouting and guiding a route that uses interchanges or junctions, the route has changed, so if the user is notified that the reroute has been performed, a user who is not aware that the route has changed It will be uncomfortable for me.

In view of the above, it is an object of the present invention to appropriately perform control relating to reroute processing when entering a service area or parking area attached to an expressway.

In order to solve the above problems, the navigation device of the present invention,
A navigation device that searches for a route from a departure place to a destination, and guides the route so as to follow the searched route toward the destination,
When traveling on a highway according to the route searched, a reference unit that is information included in the map information and refers to facility information about a facility attached to the highway in the vicinity of the measured current position,
Based on the measured current position, an entrance determination means for determining whether or not the facility attached to the expressway has entered,
When it is determined that the facility has entered the facility of the expressway, based on the facility information referred to by the reference means, a facility determination means for determining whether the facility is a complex facility having a plurality of exit routes. ,
And a reroute control means for changing the control relating to the reroute processing according to the discrimination result by the facility discrimination means.

According to the present invention, when traveling on an expressway and leaving a main line and entering a facility attached to the expressway, whether the facility is a complicated facility having a plurality of exit routes is determined. Accordingly, the control regarding the reroute process can be changed. As a result, it is possible to appropriately execute the reroute process as needed and also to provide necessary guidance regarding the reroute process.

It is a block diagram for explaining an example of composition of a navigation device of an embodiment. It is a figure for demonstrating the information stored in a road network database. It is a figure for demonstrating the example of SAPA information (service area/parking area information) of the expressway facility information contained in map information. It is a figure which shows the state of the road near the service area corresponding to the SAPA information shown in FIG. 5 is a flowchart for explaining a navigation process executed by the vehicle-mounted device according to the embodiment. It is a block diagram for explaining another example of the navigation device of an embodiment. It is a block diagram for explaining an example of composition of a personal digital assistant which constitutes other examples of a navigation device of an embodiment.

Embodiments of the apparatus, method, and program of the present invention will be described below with reference to the drawings. The present invention can be applied to a vehicle-mounted navigation device installed in an automobile, and also to a navigation device realized by a high-performance mobile phone terminal called a smart phone or a mobile terminal such as a tablet PC (Personal Computer). In the following, first, the device, method, and program of the present invention will be described, taking the case of application to a vehicle-mounted navigation device as an example, and then the present invention is applied to a navigation device realized by a mobile terminal. An example will be described.

[Configuration example of in-vehicle navigation device]
FIG. 1 is a block diagram for explaining a configuration example of a vehicle-mounted navigation device (hereinafter referred to as a vehicle-mounted device) to which an embodiment of the device, method, and program of the present invention is applied. The vehicle-mounted device 1 of this embodiment can realize a navigation function (route guidance function) for a vehicle by itself. That is, the in-vehicle device 1 receives an input of a departure place and a destination and, if necessary, one or more transit points, performs a route search from the departure place to the destination, and traces the searched route. It has a function to guide you to your destination.

FIG. 1 is a block diagram for explaining the configuration of the vehicle-mounted device 1. The traffic information receiving antenna 101A and the traffic information receiving unit 101 have, for example, a function of receiving traffic information multiplexed in FM broadcasting and converting the traffic information into information that can be used by itself. Further, the traffic information receiving unit 101 can receive and use the traffic information transmitted as a radio wave beacon on the highway and can receive and use the traffic information transmitted as an optical beacon on the main highway. In some cases, it also has a function to turn on.

Although not shown, the control unit 102 is a so-called microprocessor configured by connecting a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), a non-volatile memory, and the like. The control unit 102 executes various programs to control each unit of the vehicle-mounted apparatus 1. The operation unit 103 includes a plurality of so-called hardware keys such as a power on/off button and some function buttons, and receives an instruction input from a user. The storage device 104 includes a hard disk and its driver, and writes, reads, rewrites, deletes data, and the like. The storage device 104 is also used as a work area for holding intermediate results of various processes.

A map information DB (Data Base) 105 stores map information for displaying city maps, road maps, wide area maps, regional maps, and national maps that can be used for route guidance. The map information for displaying a city map, a road map, a wide area map, a local map, and a national map includes, for example, vector data and raster data for drawing a map, and annotation (annotation) data. Further, as will be described later in detail, the map information DB 105 holds high-speed facility information including information on facilities associated with highways, and can also provide information on facilities associated with highways.

A road NWDB (Network Data Base) 106 stores and holds network data regarding roads used for route search. FIG. 2 is a diagram for explaining an example of vehicle network data stored in the road NWDB 106. FIG. 2A shows an example of a network. The network data consists of node data and link data. The node data represents points such as landmarks, buildings, facilities, intersections, and branch points. Further, the link data indicates a road, such as a national road or a prefectural road, through which a vehicle can pass, by a line segment connecting the node data. The example of the network shown in FIG. 2A is composed of four node data (N1 to N4) and four link data (L1 to L4).

FIG. 2B shows the structure of node data in the case of the network of the example shown in FIG. Each node data is associated with identification information (N1, N2,...) Of each node and latitude and longitude information indicating the position of the node. In the example shown in FIG. 2(B), as shown in FIG. 2(A), the nodes N1 to N4 are intersections of links and are all intersections. In addition, in the node data, it is possible to associate a node type for each node, which indicates whether each node is an intersection, a branch point, or the like. In this case, it is possible to know what kind of node each node is based on the node type of the node data.

2C shows the structure of link data in the case of the network of the example shown in FIG. In each link data, identification information (L1, L2,...) Of each link, identification information (N1, N2,...) Of nodes composing the link, link cost, type, road name, road The number and the others are associated with each other. Usually, the link cost is determined by the length (distance) of the link or the time required for passage.

Then, the link cost is referred to when a route (route) having the minimum link cost is searched by, for example, the Dijkstra method. The type indicates whether the link portion is a national road, a prefectural road, a city road, a private road, or the like. The road name indicates, for example, a name given to a road formed by a corresponding link, such as “○○ highway”, “□□ street”, or “ΔΔ road”. Further, the road number indicates the number given to the road formed by the corresponding link. As other information, it is possible to hold necessary information such as the number of lanes and information on normal regulations.

Link data and node data as described with reference to FIG. 2 are stored in the road NWDB 106. The data stored in the map information DB 105 and the road NWDB 106 are updated at necessary timing whenever a change occurs, and accurate information can be managed. Although the road network data including the link data and the node data has been described as an example of the network data, the data is not limited to this as long as the data can be used for route search and can store and hold information about roads.

The GPS antenna 107A and the GPS unit 107 realize a function of positioning the current position of the own device. The in-vehicle device 1 also includes a touch panel 108 as a user interface. The touch panel 108 is configured by providing a touch sensor 108S so as to correspond to the entire display screen of a thin display unit (display device) 108D such as an LCD (Liquid Crystal Display), and has a display function and an input function. To realize.

Therefore, it is possible to display a menu or the like on the display unit of the touch panel 108, receive a touch input from the user, and execute processing according to the input information in the control unit 102. Further, information such as a departure place, a destination, and if necessary one or more transit points is input through the touch panel 108. The voice output processing unit 109 and the speaker 110 realize an output function of a voice message and the like. Therefore, a voice guidance message or the like is emitted through the voice output processing unit 109 and the speaker 110 when the navigation process is executed.

The route search unit 111 uses the network data of the road NWDB 106 to perform a route search based on the set departure point and destination, and also when one or more stopover points are designated, taking this into consideration. To do. In addition, the route search unit 111 can also perform a route search that avoids traffic jams and construction sites in consideration of the traffic information received through the traffic information receiving antenna 101A and the traffic information receiving unit 101. ..

The route guidance processing unit 112 displays the map information, the route search result obtained by the route search unit 111, and the current position of the own device positioned by the GPS unit 107 on the display unit 108D to perform navigation (route guidance). The route guidance processing unit 112 performs navigation using not only the display information displayed on the display unit 108D but also a voice message emitted through the voice output processing unit 109 and the speaker 110.

The facility information reference unit 113 refers to the high-speed facility information stored and held in the map information DB 105. Specifically, the facility information reference unit 113 refers to the information included in the high-speed facility information, that is, the information about the service area and the parking area located near the current position of the own device measured by the GPS unit 107. Is temporarily stored in the storage device 104 or the like and is immediately available.

FIG. 3 is a diagram for explaining an example of information (hereinafter referred to as SAPA information) regarding a service area (SA) and a parking area (PA) included in the high speed facility information. The off-route point is a node ID indicating a branch point that enters the service area or the parking area from the main line of the highway. By referring to the road NWDB 106 based on the node ID of the off-route point, the latitude and longitude indicating the position of the off-route point can be specified.

The main line escape link is the link ID of the route (link) connecting the off route point to the next branch point. By referring to the road NWDB 106 based on the link ID of the main line exit link, the start point and the end node of the main line exit link can be specified. Further, by referring to the road NWDB 106 based on the node ID of the specified node, the latitude and longitude indicating the position of the specified node (end point of the start point of the main line escape link) can also be specified. The SA (PA) name is the name of the service area or parking area equipped with the off-route point or the main line escape link.

The annex information is information indicating whether an interchange or a junction is annexed to the service area or the parking area. The existence form of the annex information varies depending on the format of the map information having the annex information. As an example, when an interchange or a junction is annexed, it becomes “1 (on)” and is annexed. If it is not present, it can be represented as flag (bit) information that becomes “0 (off)”. In addition to this, the side-by-side information can indicate the presence/absence of an interchange or a junction using various expression formats.

In this specification, an interchange means a facility that connects three-dimensionally intersecting roads or adjacent roads in a three-dimensional manner with a connecting road, and is mainly used as a word that means an exit of a highway. ing. Further, the term "junction" is used as a term for distinguishing an interchange that directly connects highways from each other and a concept of an ordinary interchange, and is mainly used as a word meaning a transfer route of another highway.

In the case of the present invention, whether or not there are a plurality of different exits from the service area or the parking area is a problem. Therefore, in the following, the interchange (IC) is mainly used to mean an exit to an ordinary road, and the junction (JCT) is used to mean a connection to another expressway.

The adjoining facility is information indicating what is in the facility, which is adjoined to the service area or parking area such as a restaurant, a gas station, or a toilet. The JCT information is information indicating which highway to connect to when a junction (JCT) is installed. Further, the IC information is information indicating which general road is connected to when an interchange (IC) is installed side by side. In addition to this, various other necessary information can be included.

FIG. 4 is a diagram showing a state of roads near the service area corresponding to the SAPA information shown in FIG. As shown in FIG. 4, a highway B is provided branching from the highway A. As an ancillary facility on the A expressway, an off route point is set to Nx1 and a service area “XX SA” including a main line escape link Lx1 is provided. The service area is provided with an interchange having an exit Nx2 to the general road and a junction having a connection Nx3 to the B highway. The connection port Nx3 is also a branch point to the link Lx2 for returning to the main line of the A highway.

Therefore, it can be seen that the service area is a complicated service area including an interchange and a junction. As described above with reference to FIG. 3, the service area and the parking area, which are the rest facilities provided along with the highway, are turned off by the SAPA information of the highway facility information included in the map information. You can see the route point and the escape link for the main line. Therefore, when the vehicle has passed the off-route point and traveled on the main line escape link for a predetermined distance or more, it can be reliably determined that the vehicle has entered the service area or the parking area.

Further, regarding the service area and the parking area, as described with reference to FIG. 3, it is possible to determine whether or not the facility is a complicated facility provided with one or both of an interchange and a junction, based on the combined information of the SAPA information. Of course, the presence or absence of a junction or interchange can also be confirmed by checking the JCT information and IC information.

The facility entry determination unit 114 performs a process of determining whether or not a vehicle has entered a service area or a parking area, which is a rest facility attached to an expressway. The facility entry determination unit 114 uses the SAPA information as described above in order to accurately determine whether or not the vehicle has entered the service area or the parking area. That is, based on the current position of the aircraft, referring to the nearby SAPA information, when passing the off-route point and traveling the main line escape link for a certain distance from the off-route point, the service area corresponding to the target SAPA information It is determined that the vehicle has entered the parking area.

It should be noted that the description has been given assuming that there is one (single) main line leaving link, but this main line leaving link may be extremely short for various reasons, for example, because it is near the boundary of the map leaf. Assuming such a case, one or more links from the main line leaving link to the next branch point are processed as a main line leaving link (main line leaving link string). As a result, as described above, it is possible to accurately determine whether or not the vehicle has entered the corresponding service area or parking area based on whether or not the vehicle has traveled on the main line leaving link (main line leaving link row) for a certain distance from the off-route point. Can be done well.

When the facility entrance determination unit 114 determines that the service area or parking area has entered, the complex facility determination unit 115 determines whether the service area or parking area is a complex facility having a plurality of exit routes. To determine. Specifically, check the side information of the SAPA information of the service area or parking area that is determined to have entered the aircraft, and if the side information indicates that an interchange or a junction is installed, the exit route is It can be identified as multiple complex facilities. On the other hand, if the annex information indicates that there is no interchange or junction, it is possible to determine that the exit route is a simple facility that only has a route to return to the main line that left.

The reroute control unit 116 controls the route search unit 111 and the route guidance processing unit 112 on the basis of the determination result of the complex facility determination unit 115, thereby performing a comprehensive reroute process including execution/non-execution of the reroute process. Take control. Specifically, it is assumed that the complex facility determination unit 115 determines that the facility to which the vehicle has entered is a simple facility (a facility that has only a route that returns to the main line where the exit route has left). In this case, it is not a departure from the original route, but a stop at a rest facility to return to the original route. In this case, if you perform a reroute and give a voice guidance such as "I've left the route. I'll guide you with a new route.", it will give the user anxiety and provide unnecessary voice guidance. Will be.

Therefore, in this case, the reroute control unit 116 controls each unit so as to perform any one of the following three processes. (1) Do not reroute. (2) Reroute is performed and the display of the guidance screen is changed, but the above-described voice guidance notifying that the user has deviated from the route is not performed. (3) Reroute and change the display on the guidance screen, but give voice guidance such as "This is not a departure from the route. Continue guidance to the destination." In this way, the user does not feel uneasy and unnecessary voice guidance is not provided.

On the contrary, it is assumed that the complex facility determination unit 115 determines that the facility that the vehicle has entered is a complex facility (a facility that has a plurality of exit routes such as interchanges and junctions). In this case, in order to go to the destination, there is a case where the train returns to the main line that has left, a case where the train passes through an interchange to get off a general road, and a case where a train passes through a junction to another highway. For this reason, the necessity of performing rerouting becomes high.

Therefore, in this case, the reroute control unit 116 performs reroute, changes the display of the guidance screen, and provides guidance according to the newly searched route. Then, if the newly searched route is a route that returns to the main line that left, for example, "I dropped in at the service area (parking area). I will show you the route to rejoin the main line." Voice guidance is provided. In addition, if the newly searched route is a route that goes down to an ordinary road through an interchange, a voice guidance "providing a route to the destination using the ordinary road." is provided.

In addition, if the newly searched route is a route that uses another highway through a junction, a voice guidance "providing a route to the destination using another highway" will be provided. To do. In this way, when returning to the main line that has left, or when heading to the destination using an interchange or a junction, the user does not have to feel uneasy or provide unnecessary information. , It is possible to provide route guidance appropriately.

In this embodiment, the guidance message provided is changed depending on whether the newly searched route enters an ordinary road through an interchange or enters another expressway through a junction. However, the present invention is not limited to this. is not. Regardless of the newly searched route, after outputting the common guidance message "I will guide the route to the destination.", of course, I will guide you to the destination. Good.

<Summary of processing of in-vehicle device 1>
FIG. 5 is a flowchart for explaining the navigation processing executed in the vehicle-mounted device 1, which is processing executed at every predetermined timing during route guidance for the expressway portion of the route including the expressway. Under the control of the control unit 102, the facility information reference unit 113, the facility entry determination unit 114, the complex facility determination unit 115, and the reroute control unit 116 perform the processing illustrated in FIG.

First, the facility information reference unit 113 functions to refer to the high-speed facility information near the current position of the own device measured by the GPS unit 107, and stores the SAPA information included in the high-speed facility information in a predetermined area of the storage device 104, for example. And can be referred to at any time (step S101). Next, the facility entrance determination unit 114 functions to enter the service area or the parking area using the current position of the own machine, the off-route point of the SAPA information stored in the storage device 104 in step S101, and the main line exit link. It is determined whether or not (step S102).

The process of step S102 is a process of determining whether or not the vehicle has passed an off-route point of a nearby service area or parking area and moved a predetermined distance on the main line leaving link based on the current position of the own device. Here, if it is determined that the vehicle has moved a predetermined distance on the main line leaving link from the off-route point of the service area or the parking area near the current position, it can be determined that the service area or the parking area has been entered. That is, the entry into the service area or the parking area and the entry into the service area or the parking area can be specified.

When it is determined in the determination processing of step S102 that the vehicle has not entered the service area or the parking area, the control unit 102 ends the processing shown in FIG. 5 and waits for the next execution timing. When it is determined in the determination process of step S102 that the service area or parking area has entered, it is determined whether the entered service area or parking area is a complex facility having a plurality of exit routes (step S103). As described above, the determination process of step S103 is based on the combined information of the SAPA information of the service area or parking area that has entered, the complex facility with the interchange or the junction, or the interchange or the junction is not provided. This is a process for determining whether the facility is simple.

It is assumed that the entered service area or parking area is determined to be a complicated facility in the determination processing of step S103. In this case, the reroute control unit 116 functions and controls the route search unit 111 to re-search (reroute) the route from the current position to the destination and guide the route to the destination (step S104). ). In step S104, the content of the voice guidance is changed depending on whether to return to the separated main line, get off from the interchange to the general road, or transfer to another highway through the junction.

Then, the control unit 102 determines whether or not the vehicle has exited from the service area or parking area that has entered (step S105). The determination process of step S105 can be performed by reflecting the current position of the own device on the map. In the determination processing of step S105, when it is determined that the vehicle has not exited the service area or the parking area that has entered, the processing of step S105 is repeated, and the process waits until the user exits the service area or the parking area that has entered.

When it is determined in the determination processing of step S105 that the vehicle has exited from the service area or parking area that has entered, the route guidance processing unit 112 is controlled to return to normal route guidance processing (step S106), and the processing shown in FIG. To finish. Then, the control unit 102 waits for the next execution timing of the processing shown in FIG.

Further, it is assumed that it is determined that the service area or parking area that has entered is a simple facility in the determination processing of step S103. In this case, the reroute control unit 116 functions and controls the route search unit 111 to perform any one of the following processes (1) to (3) as described above. 111 and the route guidance processing unit 112 are controlled (step S107). That is, (1) no reroute is performed. (2) Reroute is performed and the display of the guidance screen is changed, but the above-described voice guidance notifying that the user has deviated from the route is not performed. (3) Reroute and change the display on the guidance screen, but give voice guidance such as "This is not a departure from the route. Continue guidance to the destination." Is either.

It should be noted that which of the processes (1) to (3) is to be performed is set in advance by the manufacturer of the vehicle-mounted device. Further, the user may be allowed to change it according to his or her preference. After the processing of step S107, the processing from step S105 described above is performed.

As described above, the vehicle-mounted device 1 according to the present embodiment is capable of responding to a service area or a parking area that has entered a service area or a parking area associated with the traveling highway while guiding a route using the highway. , Reroute processing can be controlled. This makes it possible to properly utilize the reroute processing that is normally used when the user deviates from the route, to prevent the user from feeling uneasy and to provide unnecessary information, and to guide the user to the destination. It can be performed.

[Example of configuration of navigation device realized by mobile terminal]
FIG. 6 is a diagram for explaining a navigation device realized by using a mobile terminal to which an embodiment of the device, method, and program of the present invention is applied. It is the mobile terminals 4(1), 4(2),... Which are directly used by the user as the navigation device. However, it is the route information providing server device (hereinafter referred to as the providing server) 2 that performs the route search and provides the route search result and the necessary map information and road network data to the mobile terminal 4 through the network 3. is there. That is, the providing server 2 and the mobile terminal 4 connected via the network 3 realize a navigation device having a system configuration.

Note that, although the network 3 is mainly the Internet in FIG. 6, it also includes a mobile telephone network, a telephone network, a wireless LAN (Local Area Network), and the like that connect the mobile terminal 4 and the providing server 2 to the Internet. Further, in FIG. 6, reference numerals 3B(1) and 3B(2) are, for example, base stations of a mobile phone network or access points of a wireless LAN.

Further, as shown in FIG. 6, a plurality of mobile terminals 4(1), 4(2),... Can be connected to the providing server 2 through the network 3. Each of the mobile terminals 4(1), 4(2),... Can be realized by a high-performance mobile phone terminal called a smart phone or a tablet PC (Personal Compute). Each of the mobile terminals 4(1), 4(2),... Has the same basic configuration for realizing the navigation function. Therefore, in the following, the mobile terminals 4(1), 4(2),... Have the same configuration, and the mobile terminals 4(1), 4(2),. , And mobile terminal 4.

<Example of configuration of providing server 2>
In the providing server 2 of FIG. 6, the connection end 201T and the communication I/F 201 realize a communication function through the network 3. Although not shown, the control unit 202 is a so-called microprocessor configured by connecting a CPU, a ROM, a RAM, and a non-volatile memory, and executes various programs to control each unit of the providing server 2. The storage device 203 includes, for example, a large-capacity hard disk and its driver, and performs data writing, reading, rewriting, deletion, etc., and is also used as a work area for holding intermediate results of various processes.

Similar to the map information DB 105 of the vehicle-mounted device 1 shown in FIG. 1, the map information DB 204 stores map information for displaying city maps, road maps, wide area maps, regional maps, and national maps that can be used for route guidance. Remember. The map information for displaying a city map, a road map, a wide area map, a local map, and a national map includes, for example, vector data and raster data for drawing a map, and annotation (annotation) data. Further, also in the case of the map information DB 204, it is possible to hold high-speed facility information including information on facilities associated with highways and to provide information on facilities associated with highways.

The road NWDB 205 is similar to the road NWDB 106 of the vehicle-mounted device 1 described with reference to FIG. 2, and stores and holds network data regarding roads used for route search. That is, the road NWDB 205 is provided with node data (FIG. 2B) and link data (FIG. 2(C)).

The request acquisition unit 206 sends a route search request or a reroute request including information indicating a departure place, a destination, and, if necessary, one or more transit points, which are transmitted from the mobile terminal 4, to the connection end 201T and the communication I/I. Obtain through F201. Then, the request acquisition unit 206 extracts information indicating the departure place, the destination, and, if necessary, one or more transit points included in the acquired request, and sets the information in the route search unit 207.

The route search unit 207 uses the network data of the road NWDB 205 to perform a route search based on the set departure point and destination, and also when one or more stopover points are designated, taking this into consideration. To do. The information providing unit 208 requests the information indicating the route searched by the route searching unit 207, map information and road network data necessary for guiding the searched route through the communication I/F 201 and the connection end 201T. To provide to the mobile terminal of.

The map information provided by the information providing unit 208 is extracted from the map information DB 204 and includes high-speed facility information. The road network data provided by the information providing unit 208 is extracted from the road NWDB 205. These pieces of information are used by the mobile terminal 4 for route guidance. Therefore, the range of map information and road network data to be provided is specified in accordance with the searched route or the request from the mobile terminal 4.

In this way, the providing server 2 performs the route search process and the reroute process (route re-search process) in response to the request from the mobile terminal 4 to obtain the search result and the map information and road network necessary for route guidance. Realize the function of providing data.
<Example of configuration of mobile terminal 4>
FIG. 7 is a block diagram for explaining a configuration example of the mobile terminal 4. In the mobile terminal 4 shown in FIG. 7, the transmission/reception antenna 401T and the wireless communication unit 401 realize a communication function through the network 3. Although not shown, the control unit 402 is a so-called microprocessor configured by connecting a CPU, a ROM, a RAM, a non-volatile memory, etc., and executes various programs to control each unit of the vehicle-mounted apparatus 1.

The operation unit 403 includes a plurality of so-called hardware keys such as a power on/off button and some function buttons, and receives an instruction input from a user. The storage device 404 includes a semiconductor memory having a relatively large capacity and its driver, and writes, reads, rewrites, deletes data, and the like. The storage device 404 is also used as a work area for holding intermediate results of various processes.

The map information DB 405 stores and holds the map information provided by the providing server 2 and makes it available for route guidance and the like. The road NWDB 406 stores and holds road network data provided by the providing server 2 so that the road network data can be used for route guidance and the like. The GPS antenna 407A and the GPS unit 407 realize a positioning function for the current position.

The touch panel 408 is configured by providing a touch sensor 408S so as to correspond to the entire display screen of a thin display unit (display device) 408D such as an LCD, and realizes a display function and an input function. Therefore, it is possible to display a menu or the like on the display unit of the touch panel 408, receive a touch input from the user, and execute processing according to the input information in the control unit 402. In addition, information such as a departure place, a destination, and one or more transit points if necessary is input through the touch panel 408.

The voice output processing unit 409 and the speaker 410 realize an output function of a voice message and the like. Therefore, at the time of executing the navigation process, a voice guidance message or the like is emitted through the voice output processing unit 409 and the speaker 410. Then, the route guidance processing unit 412 and the facility information reference unit 413 realize the same functions as the route guidance processing unit 112 and the facility information reference unit 113 of the vehicle-mounted apparatus 1 shown in FIG. In addition, the facility entry determination unit 414, the complex facility determination unit 415, and the reroute control unit 416 have the same functions as the facility entry determination unit 114, the complex facility determination unit 115, and the reroute control unit 116 of the vehicle-mounted apparatus 1 illustrated in FIG. 1. Realize.

That is, when the execution of the navigation process is instructed from a predetermined menu via the touch panel 408, the control unit 402 functions to start the navigation process. In this case, the control unit 402 accepts an instruction input of a departure place, a destination, and, if necessary, one or more transit points through the touch panel 408, forms a route search request including the accepted information, and sends the route search request to the providing server 2. Send.

In response to this, the providing server 2 executes a route search, and sends the search result and necessary map information and road network data to the requesting portable terminal 4. The mobile terminal 4 receives these pieces of information, temporarily stores the search result in the storage device 404, stores the map information in the map information DB 405, and stores the road network data in the road NWDB 406. Then, under the control of the control unit 402, the route guidance processing unit 412 functions to display the map on the display unit 408D, display the searched route on the map and the current position of the own device, and provide the voice guidance. Is also used to follow the searched route and guide the route to the destination.

Thus, when the route guidance is started and the current position of the own device is located on the expressway, the facility information reference unit 413, the facility entry determination unit 414, the complex facility determination unit 415, and the reroute control unit 416 function. First, the facility information reference unit 413 functions to refer to the high-speed facility information of the facility near the current position in the map information DB 405, temporarily store it in the storage device 404, and make it immediately available.

Then, the facility entry determination unit 414 functions to determine whether or not the vehicle has entered the service area or parking associated with the highway based on the off-route point of the SAPA information of the highway facility information and the main line exit link. It is assumed that the facility approach determination unit 414 determines that the service area or parking has been entered. In this case, the complex facility discriminating unit 415 functions and refers to the side information of the corresponding SAPA information to discriminate whether the entered service area or parking is a complex facility having a plurality of exit routes. To do.

Then, the reroute control unit 416 functions to control the reroute process based on the determination result of the complex facility determination unit 415. For example, it is assumed that the determination result of the complex facility determination unit 415 is that the service area or the parking area that the vehicle has entered is not a complex facility (a simple facility). In this case, (1) reroute is not performed. (2) Reroute is performed and the display of the guidance screen is changed, but the above-described voice guidance notifying that the user has deviated from the route is not performed. (3) Reroute and change the display on the guidance screen, but give voice guidance such as "This is not a departure from the route. Continue guidance to the destination." Control to take either correspondence of.

In addition, it is assumed that the determination result of the complex facility determination unit 415 is that the service area or parking where the own device has entered is a complex facility. In this case, rerouting is performed, the display of the guidance screen is changed, and guidance is provided according to the newly searched route. Then, if the newly searched route is a route that returns to the main line that left, for example, "I dropped in at the service area (parking area). I will show you the route to rejoin the main line." Voice guidance is provided.

In addition, if the newly searched route is a route that goes down to an ordinary road through an interchange, a voice guidance "providing a route to the destination using the ordinary road." is provided. In addition, if the newly searched route is a route that uses another highway through a junction, a voice guidance "providing a route to the destination using another highway" will be provided. To do.

When performing the reroute process, a reroute request including a departure point, a destination, and a stop point if there is a set stop point that has not been passed is formed and transmitted to the providing server 2 to be provided. The server 2 performs reroute processing and receives the processing result. When the reroute processing is not performed, the route guidance may be continued without controlling each part.

As described above, even in the case of the navigation device including the providing server 2 and the mobile terminal 4, the mobile terminal 4 can execute the processing described with reference to the drawings. Accordingly, even in the case of the navigation device including the providing server 2 and the mobile terminal 4, when the vehicle stops (enters) the service area or the parking area attached to the highway, the control regarding the reroute process is appropriately performed. You can As a result, it is possible to prevent the user from becoming uneasy and to provide unnecessary voice guidance.

[Effect of Embodiment]
According to the navigation device of the above-described embodiment, when route guidance is provided, the user stops at a service area or a parking area attached to a highway on which a vehicle equipped with the vehicle is moving ( When entering), appropriate control regarding reroute can be performed. As a result, unnecessary reroute processing and unnecessary voice guidance can be prevented. This can prevent the user from becoming anxious. It is also possible to prevent the provision of voice guidance, which does not make much sense to provide regarding reroute processing.

Specifically, in simple service areas and parking areas, reroute processing should not be performed, or reroute processing should be performed and the screen display should be changed, but in the voice guidance, the content says "I have left the route." You can choose not to provide guidance with anxiety factors. Also, in complicated service areas and parking areas, reroute processing is performed and the screen display is also changed, but again, it is possible not to give the voice guidance "I have left the route." In this case, it is possible to give a voice guidance of a message such as "I dropped in at the service area (parking area). Reroute to the route to the destination" so as not to disturb the user's anxiety.

[Modification]
In the above-described embodiment, whether or not the vehicle has entered the service area or the parking area is determined by passing through the off-route point of the service area or the parking area and traveling the main line escape link for a predetermined distance from the off-route point. It was determined that the facility had been entered. However, it is not limited to this. The position and range of the service area and parking area can be specified on the map. Therefore, if the current position of the vehicle equipped with the own device (the current position of the own device) belongs to the range of the service area or the parking area, it is determined that the vehicle has entered the service area or the parking area. Good.

Further, in the case of the navigation device including the providing server 2 and the mobile terminal 4 described with reference to FIG. 6, the providing server 2 includes the map information DB 204 and the road NWDB 205, but the present invention is not limited to this. As the map information DB 204 and the road NWDB 205, those provided in another server device can be used. That is, the function on the providing server 2 side can be constructed as a cloud system of various modes.

[Other]
As can be seen from the above description of the embodiment, the function of the reference means of the navigation device according to the claims is realized by the facility information reference unit 113 of the vehicle-mounted device 1 of the embodiment. Also. The function of the entrance determination unit of the navigation device according to the claims is realized by the facility entrance determination unit 114 of the vehicle-mounted device 1, and the function of the facility determination unit of the navigation device according to the claims is realized by the complex facility determination unit 115 of the vehicle-mounted device 1. doing. The function of the reroute control means of the navigation device according to the claims is realized by the reroute control unit 116 of the vehicle-mounted device 1.

Further, the method for performing the processing described with reference to the flowchart of FIG. 5 is the one to which the embodiment of the navigation method according to the present invention is applied. Further, the program for performing the processing described with reference to the flowchart of FIG. 5 is a program to which an embodiment of the navigation program according to the present invention is applied. That is, the functions of the units of the facility information reference unit 113, the facility entry determination unit 114, the complex facility determination unit 115, and the reroute control unit 116 illustrated in FIG. 1 are controlled by a program (software) executed by the control unit 102. It can also be realized as a function of the unit 102.

DESCRIPTION OF SYMBOLS 1... In-vehicle device (vehicle-mounted navigation device), 101A... Traffic information receiving antenna, 101... Traffic information receiving part, 102... Control part, 103... Operation part, 104... Storage device, 105... Map information DB, 106... Road NWDB , 107A... GPS antenna, 107... GPS section, 108... Touch panel, 108D... Display section, 108S... Touch sensor, 109... Voice output processing section, 110... Speaker, 111... Route search section, 112... Route guidance processing section, 113 ...Facility information reference unit, 114...Facility entry determination unit, 115...Complex facility determination unit, 116...Reroute control unit, 2...Route information providing server device, 201T...Connection end, 201...Communication I/F, 202...Control unit , 203... Storage device, 204... Map information DB, 205... Road NWDB, 206... Request acquisition unit, 207... Route search unit, 208... Information providing unit, 3... Network, 3B(1), 3B(2)... Base Station or access point, 4... Mobile terminal, 401A... Transmitting/receiving antenna, 401... Wireless communication section, 402... Control section, 403... Operation section, 404... Storage device, 405... Map information DB, 406... Road NWDB, 407A... GPS antenna, 407... GPS unit, 408... Touch panel, 408D... Display unit, 408S... Touch sensor, 409... Voice output processing unit, 410... Speaker, 412... Route guidance processing unit, 413... Facility information reference unit, 414... Facility Entry determination unit, 415... Complex facility determination unit, 416... Reroute control unit

Claims (6)

A navigation device that searches for a route from a departure place to a destination, and guides the route so as to follow the searched route toward the destination,
When traveling on a highway according to the route searched, a reference unit that is information included in the map information and refers to facility information about a facility attached to the highway in the vicinity of the measured current position,
Based on the measured current position, an entrance determination means for determining whether or not the facility attached to the expressway has entered,
When it is determined that the facility has entered the facility of the expressway, based on the facility information referred to by the reference means, a facility determination means for determining whether the facility is a complex facility having a plurality of exit routes. ,
And a reroute control unit configured to change the control relating to the reroute processing according to the determination result of the facility determining unit. The navigation device according to claim 1, wherein
The navigation device, wherein the entry determination means determines that the facility has been entered when it is determined that the vehicle has traveled on a travel path specified by information indicating a main line exit link included in the facility information. The navigation device according to claim 1 or 2, wherein
If the facility determination unit determines that the facility is not a complicated facility, the reroute control unit does not perform the reroute process, or performs the reroute process and notifies by voice that the reroute process has been performed. The navigation device is characterized by performing either re-routing processing or performing rerouting processing to notify that the vehicle is not out of the route. The navigation device according to claim 3, wherein
The reroute control means, when the facility discriminating means discriminates that the facility is a complicated facility, performs reroute processing and performs control so that route guidance to a destination is performed. Navigation device. A navigation method used in a navigation device that searches for a route from a departure point to a destination, and guides the route so as to follow the searched route toward the destination,
When the vehicle is traveling on a highway according to the searched route, the reference means refers to the information included in the map information, that is, the facility information about the facility attached to the highway near the current position where the positioning is performed. A reference process,
An entry determination step for determining whether or not the entry determination means has entered the facility attached to the expressway, based on the current position determined by positioning;
When it is determined that the facility has entered the facility of the expressway, the facility determination means determines whether the facility is a complex facility having a plurality of exit routes based on the facility information referred to in the reference step. The facility discrimination process to
And a reroute control step in which the reroute control means changes the control relating to the reroute processing according to the result of the determination in the facility determining step. A navigation program executed by a computer mounted on a navigation device that searches for a route from a departure place to a destination and guides the route so as to follow the searched route toward the destination,
When traveling on the highway according to the searched route, the reference step, which is information included in the map information, refers to the facility information regarding the facility attached to the highway near the current position that has been positioned,
An entry determination step of determining whether or not the facility attached to the expressway is entered based on the current position measured
When it is determined that the facility has entered the facility of the expressway, based on the facility information referred to by the reference means, the facility determination step of determining whether the facility is a complex facility having a plurality of exit routes,
And a reroute control step for changing the control relating to the reroute processing according to the result of the determination in the facility determining step.

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