JP2006177819A - Vehicle-mounted navigation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reroute for a guide route at a timing desired by a user, when a vehicle is deviated from the guide route. <P>SOLUTION: When the vehicle is deviated from the guide route, the user can set a search start condition for showing the condition for starting search of the guide route from the present position of the vehicle to the destination in a computer 30. When the vehicle is deviated from the guide route, and only when the set search start condition is fulfilled, the computer 30 can search for the guide route from the present position of the vehicle to the destination. Hereby, when the vehicle is deviated from the guide route, the guide route can be rerouted for at the timing desired by the user. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an in-vehicle navigation device.

  2. Description of the Related Art Conventionally, an in-vehicle navigation device that presents information related to a recommended route according to the degree of user recognition regarding the current position has been proposed (see, for example, Patent Document 1). According to the vehicle-mounted navigation device disclosed in Patent Document 1, for example, a storage unit that stores a travel history and map information for each user of the host vehicle in association with each node, and map information based on the storage unit. A degree-of-recognition calculation unit that calculates the degree of recognition for each user regarding each of the above nodes, a route search unit that searches for a recommended route from the current position of the host vehicle to the destination, and a presentation unit that presents information about the recommended route And the route search unit refers to a current position confirmation unit for confirming the current position of the host vehicle with respect to the recommended route, and a recognition degree of the user regarding the current position with reference to the recognition degree when it is confirmed that the vehicle is out of the recommended route. A degree-of-recognition determination unit, a re-route instruction unit for instructing to search again only when the user's recognition level determined here is low, and searching for the presented route information again. Provided path information updating unit that updates the recommended route that is.

Specifically, the degree of recognition described above reads information related to the degree of recognition of each node, such as how many times the user has passed a node that is a certain point on the map or whether the user has stopped, etc. from the travel history. Thus, the degree of recognition for the node is calculated. The recognition level is calculated continuously and continuously with the travel, and the travel history up to now is accurately reflected in the recognition level. If the recognition degree of each node is calculated and the recognition degree is higher than a predetermined threshold value, the user recognizes at a high degree with respect to the same point as that node and the vicinity of the point. Can be considered. At this time, the threshold for determining whether the recognition level of each node is high or low is appropriately determined according to the recognition level calculation method. For example, if the recognition level is calculated based on the travel history, a threshold can be set for the number of travels.
JP 2003-156349 A

  The user may drive the vehicle to the destination while holding an image of the initial recommended route to the destination. At this time, it may be possible to deviate from the recommended route in order to stop at a convenience store around the recommended route on the way to the destination. For example, if it is possible to arrive at the convenience store by following the road after turning right at an intersection on the recommended route, it is possible to easily return to the recommended route from the convenience store. In this case, since a new recommended route is searched and the route is changed, the image of the original recommended route to the destination may be confused. Therefore, the user may not desire to re-search the recommended route. . However, in the conventional apparatus, when the vehicle deviates from the recommended route in an area where the user does not understand the land, the recommended route is re-searched when the vehicle deviates from the recommended route. Thus, when the vehicle deviates from the recommended route, the user is confused with the image of the initial recommended route to the destination by re-searching the recommended route at a timing not desired by the user. was there.

  The present invention has been made in view of the above points, and provides an in-vehicle navigation device capable of re-searching a guide route at a timing desired by a user when a vehicle deviates from the guide route. With the goal.

In order to achieve the above object, an in-vehicle navigation device according to claim 1,
Current position detecting means for detecting the current position of the vehicle;
Map data storage means for storing map data including road shapes;
Guide route search means for searching for a guide route for guiding the vehicle to the destination using map data;
A setting means for setting, by the user, a search start condition indicating a condition for starting the search for the guide route from the current position of the vehicle to the guide route search means when the current position of the vehicle deviates from the guide route;
Determining means for determining whether or not a search start condition is satisfied;
When it is determined by the determination means that the search start condition is satisfied, the information processing apparatus includes an instruction means for instructing the guide route search means to search for a guide route from the current position of the vehicle.

  As described above, in the in-vehicle navigation device according to claim 1, when the vehicle departs from the guide route, a search start condition indicating a condition for the guide route search means to start searching for the guide route from the current position of the vehicle. Can be set by the user. Only when the vehicle deviates from the guide route and the set search start condition is satisfied, the guide route search means can search for the guide route from the current position of the vehicle. Thereby, when the vehicle deviates from the guide route, the guide route can be searched again at a timing desired by the user.

  As described in claim 2, the setting means causes the user to set a search start distance as a search start condition, and the determination means determines whether the distance from the guide route to the current position of the vehicle has reached the search start distance. It is preferable to determine whether or not the search start condition is satisfied. For example, when the search start distance is set to “10 km”, even if the vehicle deviates from the guide route, the surrounding “10 km” from the point where the vehicle deviates from the guide route is not searched again. You can do sightseeing in the area.

  According to a third aspect of the present invention, the vehicle includes a counting unit that counts an elapsed time after the current position of the vehicle deviates from the guide route, and the setting unit causes the user to set the search start time as a search start condition, The determination means preferably determines whether or not the search start condition is satisfied based on whether or not the elapsed time has reached the search start time. For example, it is conceivable that the user desires to tour a sightseeing facility around the guidance route for one hour before arriving at the destination. In this case, by setting the search start time to “10:00”, the guide route to the destination can be searched again one hour after the departure from the guide route.

  According to a fourth aspect of the present invention, the apparatus includes a current time acquisition unit that acquires the current time, the setting unit causes the user to set the search start time as a search start condition, and the determination unit determines that the acquired current time is a search start It can also be determined whether or not the search start condition is satisfied based on whether or not the time has come. For example, when a tourist facility around the guide route is to be visited and the tourist facility must be departed at “17:00” at the latest, the search start time is set to “17:00”. As a result, when the current time exceeds “17:00”, the guide route to the destination is searched again.

  As set forth in claim 5, the setting means causes the user to set a search start intersection number indicating the number of intersections through which the vehicle passes as a search start condition, and the determination means passes after the vehicle deviates from the guide route. It is preferable to determine whether or not the search start condition is satisfied based on whether or not the number of intersections that have been reached has reached the number of search start intersections. For example, in a city area where roads are densely packed, the roads may be configured in a lattice pattern. At this time, if the vehicle deviates from the guide route while the vehicle is traveling on the road configured in the lattice shape according to the guide route, the vehicle road is displayed by looking at the displayed road map. It is possible to easily return to the guide route from the current position. In such a case, even if the vehicle deviates from the guide route, the necessity for re-searching the guide route is low. Further, for example, when the number of searched intersections is set to “5”, the user can grasp that the vehicle is always traveling within 5 blocks from the deviated guide route.

  According to another aspect of the present invention, the setting means causes the user to set a search start boundary indicating a boundary of a predetermined area as the search start condition, and the determination means determines whether or not the current position of the vehicle has exceeded the search start boundary. Whether or not the search start condition is satisfied can be determined based on the above. For example, it may be desirable to drive only a specific area around the drive path while the vehicle is traveling on the drive path. In such a case, for example, by setting the search start boundary as “Arimatsu”, it is possible to go around “Arimatsu” without re-searching the drive path. When the current position of the vehicle exceeds “Arimatsu”, the drive route can be searched again.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram illustrating a schematic configuration of an in-vehicle navigation device 100 according to the present embodiment. Hereinafter, the in-vehicle navigation device according to the present embodiment will be described in detail.

  The in-vehicle navigation device 100 includes a position detector 10, a digital road map database 20, a computer 30, a display unit 40, an operation switch group 50, an audio output unit 60, an audio input unit 70, an external memory 80, and a VICS receiver 90. ing.

  The computer 30 includes a known CPU, ROM, RAM, I / O, and a bus line for connecting these components. In the ROM, a program to be executed by the computer 30 is written, and a CPU or the like executes predetermined arithmetic processing according to this program.

  The position detector 10 includes a GPS receiver 11 for a global positioning system (GPS) that measures the position of a vehicle based on radio waves from a satellite, a geomagnetic sensor 12 for detecting the absolute direction of the vehicle, and a relative direction of the vehicle. Has a steering sensor 13 for detecting. Further, the position detector 10 includes a vehicle speed sensor 14 for detecting a travel distance from the travel speed of the vehicle.

  As described above, the position detector 10 includes the GPS receiver 11 for vehicle position measurement by radio wave navigation, and the geomagnetic sensor 12, the steering sensor 13, and the vehicle speed sensor 14 for vehicle position estimation by self-contained navigation. ing. Further, the radio navigation is not limited to the GPS, but, for example, a VICS optical beacon may be used. Further, in order to detect the relative orientation of the vehicle in the self-contained navigation, a gyro sensor or wheel speed sensors provided on the left and right wheels of the vehicle may be used instead of the steering sensor 13.

  The digital road map database 20 is an apparatus for inputting digital map data including road data, background data, character data, re-search start boundary data, and the like to the computer 30. The digital road map database 20 has an information storage medium 21 for storing digital map data. As the information storage medium 21, a CD-ROM or a DVD-ROM is generally used depending on the data amount. A card, a hard disk, or the like may be used.

  Here, the configuration of road data will be described. The road data is composed of data such as a link ID with a unique number for each road, link coordinate data, node coordinate data, road type data indicating a road type such as an expressway or a national road, and road width data. . The link in the road data is obtained by dividing each road on the map into a plurality of nodes by nodes indicating intersections, branching points, etc., and defining a link between the two nodes. The link coordinate data describes the start and end coordinates of this link. When a node is included in the middle of the link, the node coordinates are described in the node coordinate data. In addition to displaying a map, this road data is used to give the shape of a road when performing map matching processing, and is used when searching for a guide route to a destination.

  The background data is data for displaying the facility shape, natural terrain, and the like to be displayed other than the road when the road map is displayed on the display unit 40. The character data is for displaying place names, facility names, road names, and the like on the road map, and is configured as data in which coordinates on the map corresponding to the display positions are associated.

  The re-search start boundary data is data indicating a re-search start boundary which is one of re-search start conditions described later. For example, as the re-search start boundary data, there is polygon data representing shapes such as prefectural boundaries, city boundaries, and town boundaries.

  The display unit 40 is configured by, for example, a liquid crystal display, and the vehicle generated by the vehicle position mark corresponding to the current position of the vehicle on the screen of the display unit 40 and the map data input from the digital road map database 20. The surrounding road map can be displayed. When a destination is set, a guide route from the current position to the destination is displayed on the road map in an overlapping manner.

  The operation switch group 50 includes, for example, a touch panel switch integrated with the display unit 40 or a mechanical switch provided around the display unit 40, and is used for various inputs.

  The voice output unit 60 includes a speaker or the like, and outputs a guidance voice when route guidance is being performed, or outputs a guidance related to an input voice at the time of voice recognition. The voice input unit 70 is composed of a microphone or the like, and takes in a voice uttered by the user and inputs it to the computer 30. The computer 30 performs a process for recognizing the input voice, and executes various controls based on the recognition result.

  The external memory 80 is composed of a storage medium such as a memory card or a hard disk. The external memory 80 stores various data such as text data, image data, and audio data stored by the user.

  The VICS receiver 90 receives information such as road traffic information distributed from the VICS center via beacons laid on the road and FM broadcast stations in various places, and sends information from the vehicle side to the outside as necessary. It is a device that transmits. The received information is processed by the computer 30. For example, traffic jam information, speed limit information, and the like are superimposed on the road map displayed on the display unit 40.

  In addition, when the position of the destination is input by the operation switch group 50 or voice recognition, the in-vehicle navigation device 100 according to the present embodiment automatically selects the optimum route from the current position to the destination and guides the route. A so-called route guidance function is also provided. As a method for automatically setting an optimum route, a known method such as the Dijkstra method is known. In addition, for example, a search function for searching for the position of a facility or the like from an address, a facility name, a telephone number, or the like input by the user is also provided.

  These functions are executed mainly by the computer 30 performing various arithmetic processes. That is, when the destination is input, the computer 30 calculates a route using the map data in the digital road map database 20 and displays the route. In addition, the computer 30 displays the own vehicle position mark indicating the position of the vehicle and the surrounding road map on the display unit 40, or changes the scale of the road map.

  Next, the route guidance processing in this embodiment will be described in detail with reference to the flowcharts of FIGS. FIG. 2 is a flowchart showing a main routine of route guidance processing, and FIG. 3 is a flowchart showing a routine of re-search start condition setting processing. FIG. 4 is a flowchart showing a routine for re-search determination processing.

  First, in step S10 of FIG. 2, the current position of the vehicle is detected. At this time, the position data by the GPS receiver 11 is acquired in the same form as the coordinate data (latitude and longitude) of the road data described above. In addition, the geomagnetic sensor 12, the steering sensor 13, and the vehicle speed sensor 14 acquire data related to the traveling direction and travel distance of the host vehicle, and calculate the coordinate data of the current position based on the vehicle position calculated or determined in the past. Perform (calculation of coordinate data by self-contained navigation). The current position is basically obtained based on coordinate data calculated by self-contained navigation. However, when the position data by the GPS receiver 11 is acquired, the two are compared, and when the difference is equal to or greater than a predetermined distance, the position data by the GPS receiver 11 is adopted as the current position.

  In step S20, map data of the surrounding map including the current position of the vehicle is read from the digital road map database 20 and displayed on the display unit 40. In step S30, it is determined whether or not a destination is set. Specifically, for example, a menu screen is displayed on the display unit 40, and it is determined whether or not the “destination setting menu” item on the menu screen is selected. If it is determined that the “Destination Setting Menu” item has not been selected, the process returns to Step S10. On the other hand, if it is determined that the “Destination setting menu” item has been selected, the process proceeds to step S40.

  In step S40, the destination is set. Specifically, for example, a destination setting menu is displayed on the display unit 40. This destination setting menu includes “search by name”, “search by genre”, “search by phone number”, and the like. The user selects one of the destination setting menus and inputs a search condition corresponding to the selected menu. For example, when the user selects “Search by phone number”, the phone number “000-123-4567” of the facility desired by the user is input as a search condition, and the computer 30 receives the input phone number “000”. The facility data with the telephone number matching “−123-4567” is searched. A facility corresponding to the retrieved facility data is set as a destination.

  In step S50, a re-search start condition is set. The re-search start condition setting process will be described with reference to the flowchart of FIG.

  When the re-search start condition setting process is started, for example, a re-search start condition setting menu screen 510 as shown in FIG. In the flowchart of FIG. 3, first, in step S210, it is determined whether any of the items in the re-search start condition setting menu screen 510 has been selected.

  If the item “set re-search start distance” is selected, the process proceeds to step S220. In step S220, a re-search start distance is set. Specifically, for example, a re-search start distance setting screen 520 as shown in FIG. On this re-search start distance setting screen 520, the re-search start distance desired by the user is selected, and the “OK” item is selected to set the selected re-search start distance.

  If the item “Set re-search start time or re-search start time” is selected, the process proceeds to step S230. In step S230, a re-search start time or a re-search start time is set. Specifically, for example, a re-search start time setting screen 530 as shown in FIG. 7 is displayed on the display unit 40. On the lower side of the re-search start time setting screen 530, a “time” item and a “time” item for switching between the re-search start time setting mode and the re-search start time setting mode are displayed. When the “time” item is selected, the mode is switched to the re-search start time setting mode, and when the “time” item is selected, the mode is switched to the re-search start time setting mode. An adjustment key for adjusting “hour (hour)” and “minute” is displayed at the center of the re-search start time setting screen 530. A re-search start time or a re-search start time desired by the user is input via the adjustment key. Here, “13:50” is input. When the “OK” item is selected, the input re-search start time or re-search start time is set.

  Furthermore, when the item “set the number of intersections for starting a new search” is selected, the process proceeds to step S240. In step S240, the number of re-search start intersections is set. Specifically, for example, a re-search start intersection number setting screen 540 as shown in FIG. 8 is displayed on the display unit 40. In this re-search start intersection number setting screen 540, the re-search start intersection number desired by the user is selected, and the “OK” item is selected, whereby the selected re-search start intersection number is set.

  On the other hand, if the item “set re-search start boundary” is selected, the process proceeds to step S250. In step S250, a re-search start boundary is set. Specifically, for example, a re-search start boundary setting screen 550 as shown in FIG. 9 is displayed on the display unit 40. On this re-search start boundary setting screen 550, the re-search start boundary desired by the user is selected, and the “OK” item is selected, whereby the selected re-search start boundary is set.

  In step S60, unless otherwise specified, the current position detected in step S10 is used as a departure point, and a route to the destination set in step S40 is searched by a technique such as the Dijkstra method. In step S70, the route searched in step S60 is displayed. Specifically, a display control unit (not shown) highlights the searched route on the road data and displays it on the display unit 40. In step S80, route guidance is performed based on the route searched in step S60.

  In step S90, it is determined whether the vehicle has deviated from the route. For example, it is determined whether or not the vehicle has deviated from the route based on the coincidence / mismatch of the position data calculated by the position detector 10 and the position of the road constituting the route.

  Further, for example, it may be determined whether or not the vehicle has deviated from the route by using a travel locus of the vehicle. More specifically, the detected travel locus of the vehicle is compared with the route searched in step S60, and a correlation coefficient indicating the degree of similarity between them is calculated. When the calculated correlation coefficient is equal to or smaller than a predetermined value, it is determined that the vehicle has deviated from the route.

  If it is determined in step S90 that the vehicle has deviated from the route, the process proceeds to step S100. In step S100, a re-search determination process is executed. This re-search determination process will be described with reference to the flowchart of FIG.

  In the flowchart of FIG. 4, first, in step S310, it is determined whether or not the set re-search start condition is satisfied.

  If the re-search start condition set is “re-search start distance”, whether the distance from the point where the vehicle deviates from the guide route (hereinafter referred to as the deviated point) to the current position of the vehicle has reached the re-search start distance Determine whether or not. Specifically, for example, first, the distance from the departure point to the current position of the vehicle is calculated as a linear distance based on the digital road map database 20. It is determined whether or not the calculated distance has reached the re-search start distance. If it is determined that the re-search start distance has been reached, the process returns to step S60. If it is determined that the re-search start distance has not been reached, the process proceeds to step S320. For example, when the re-search start distance is set to “10 km”, even if the vehicle deviates from the guide route, the distance from the point where the vehicle deviates from the guide route is “10 km” without re-searching the guide route. Sightseeing in the area. Note that the distance to the current position of the vehicle may be calculated as a distance from the guidance route. That is, the distance from the current position of the vehicle to the nearest guide route may be calculated and compared with the re-search start distance. In this way, it is possible to go sightseeing around the guide route, not just the departure point.

  When the set re-search start condition is “re-search start time”, the computer 30 counts the elapsed time from the time when the vehicle deviates from the guide route, and this elapsed time becomes the re-search start time. It is determined whether it has been reached. If it is determined that the re-search start time has been reached, the process returns to step S60. If it is determined that the re-search start time has not been reached, the process proceeds to step S320. For example, it is conceivable that the user desires to tour a sightseeing facility around the guidance route for one hour before arriving at the destination. In this case, by setting the re-search start time to “10:00”, the guide route to the destination can be searched again one hour after the departure from the guide route.

  Furthermore, when the set re-search start condition is “re-search start time”, it is determined whether or not the current time has reached the re-search start time. If it is determined that the re-search start time has been reached, the process returns to step S60. If it is determined that the re-search start time has not been reached, the process proceeds to step S320. For example, when a tourist facility around the guide route is visited and the tourist facility must be departed at “17:00” at the latest, the re-search start time is set to “17:00”. As a result, when the current time exceeds “17:00”, the guide route to the destination is searched again.

  If the set re-search start condition is “number of re-search start intersections”, it is determined whether or not the number of intersections that have passed since the vehicle deviated from the guide route has reached the number of re-search start intersections. If it is determined that the re-search start intersection number has been reached, the process returns to step S60. When it is determined that the re-search start intersection number has not been reached, the process proceeds to step S320. For example, in a city area where roads are densely packed, the roads may be configured in a lattice pattern. At this time, if the vehicle deviates from the guide route while the vehicle is traveling on the road configured in the lattice shape according to the guide route, the vehicle road is displayed by looking at the displayed road map. It is possible to easily return to the guide route from the current position. In such a case, even if the vehicle deviates from the guide route, the necessity for re-searching the guide route is low. Further, for example, when the number of searched intersections is set to “5”, the user can grasp that the vehicle is always traveling within 5 blocks from the deviated guide route.

  Furthermore, when the set re-search start condition is “re-search start boundary”, it is determined whether or not the current position of the vehicle has exceeded the re-search start boundary. If it is determined that the re-search start boundary has been exceeded, the process returns to step S60. If it is determined that the re-search start boundary has not been exceeded, the process proceeds to step S320. For example, it may be desirable to drive only a specific area around the drive path while the vehicle is traveling on the drive path. In such a case, for example, by setting the re-search start boundary as “Arimatsu”, it is possible to go around “Arimatsu” without re-searching the drive path. When the current position of the vehicle exceeds “Arimatsu”, the drive route can be searched again.

  In step S320, it is determined whether the vehicle has returned to the route. For example, based on the position data calculated by the position detector 10, it is determined whether or not the vehicle has returned to the route.

  If it is determined that the vehicle has not returned to the route, the process returns to step S310. On the other hand, when it is determined that the vehicle has returned to the route, the process returns to the flowchart of FIG. 2 and proceeds to step S110.

  In step S110, it is determined whether or not the vehicle has reached the destination. If it is determined that the vehicle has not reached the destination, the process returns to step S80. On the other hand, when it is determined that the vehicle has reached the destination, the process ends.

  As described above, according to the present embodiment, when the vehicle deviates from the guide route, the user sets a search start condition indicating a condition for causing the computer 30 to start searching for the guide route from the current position of the vehicle. I was able to do that. Only when the vehicle deviates from the guide route and the set search start condition is satisfied, the computer 30 can search for the guide route from the current position of the vehicle. Thereby, when the vehicle deviates from the guide route, the guide route can be searched again at a timing desired by the user.

It is a block diagram which shows schematic structure of the vehicle-mounted navigation apparatus 100 by this embodiment. It is a flowchart which shows the main routine of the route guidance process in this embodiment. It is a flowchart which shows the routine of the re-search start condition setting process in this embodiment. It is a flowchart which shows the routine of the re-search determination process in this embodiment. It is an image figure which shows the example of a display of the re-search start condition setting menu screen 510 in this embodiment. It is an image figure which shows the example of a display of the re-search start distance setting screen 520 in this embodiment. It is an image figure which shows the example of a display of the re-search start time setting screen 530 in this embodiment. It is an image figure which shows the example of a display of the re-search start intersection number setting screen 540 in this embodiment. It is an image figure which shows the example of a display of the re-search start boundary setting screen 550 in this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Position detector 11 ... GPS receiver 12 ... Geomagnetic sensor 13 ... Steering sensor 14 ... Vehicle speed sensor 20 ... Digital road map database 21 ... Information recording medium 30 ... Computer 40 ... Display part 50 ... Operation switch group 60 ... Sound output part 70 ... Voice input unit 80 ... External memory 90 ... VICS receiver

Claims (6)

Current position detecting means for detecting the current position of the vehicle;
Map data storage means for storing map data including road shapes;
Guidance route search means for searching for a guidance route for guiding the vehicle to the destination using the map data;
A setting means for setting, by a user, a search start condition indicating a condition for starting a search for a guide route from the current position of the vehicle when the current position of the vehicle deviates from the guide route;
Determining means for determining whether or not the search start condition is satisfied;
When the determination means determines that the search start condition is satisfied, the instruction means includes an instruction means for instructing the guide route search means to search for a guide route from the current position of the vehicle. Car navigation system. The setting means causes the user to set a search start distance as the search start condition,
The determination means determines whether or not the search start condition is satisfied based on whether or not a distance from the guide route to the current position of the vehicle has reached the search start distance. The in-vehicle navigation device according to 1. A counting means for counting an elapsed time after the current position of the vehicle deviates from the guide route;
The setting means allows the user to set a search start time as the search start condition,
3. The determination unit according to claim 1, wherein the determination unit determines whether the search start condition is satisfied based on whether the elapsed time has reached the search start time. 4. Car navigation system. A current time acquisition means for acquiring the current time;
The setting means allows the user to set a search start time as the search start condition,
4. The method according to claim 1, wherein the determination unit determines whether the search start condition is satisfied based on whether the acquired current time is the search start time. 5. The on-vehicle navigation device according to claim 1. The setting means causes the user to set a search start intersection number indicating the number of intersections through which the vehicle passes as the search start condition,
The determination means determines whether or not the search start condition is satisfied based on whether or not the number of intersections that the vehicle has passed after deviating from the guide route has reached the number of search start intersections. The in-vehicle navigation device according to any one of claims 1 to 4, wherein the on-vehicle navigation device is characterized. The setting means causes the user to set a search start boundary indicating a boundary of a predetermined area as the search start condition,
6. The determination unit according to claim 1, wherein the determination unit determines whether or not the search start condition is satisfied based on whether or not a current position of the vehicle has exceeded the search start boundary. The on-vehicle navigation device according to claim 1.

Images