JP2812839B2 - Vehicle navigation system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular navigation apparatus for providing a route guidance to a preset destination, and particularly to a vehicle navigation apparatus having a route re-search function when the vehicle deviates from a preset route. Vehicle navigation device.

[0002]

2. Description of the Related Art A vehicular navigation system is provided with a display screen used for setting a route and a display screen which is opened automatically at the time of guidance and guidance or at the request of a driver. When a route setting condition is input on the route setting screen and a route search is started, a route search screen (route search diagram) displaying a detailed map including the route is opened. When the route search is completed, an all route display screen (wide area map) is displayed, in which all routes are displayed in a form that can be clearly identified. The driver can visually and intuitively recognize and grasp only the route from the current location to the destination from the wide area map. Then, the guidance start button is pressed to start the guidance. While traveling according to the road guidance, the driver may deviate from the route. As a countermeasure, for example, Japanese Patent Application Laid-Open No. 1-173815 discloses a function of immediately informing the driver that the vehicle has deviated from the route and re-searching for a new route.

[0003]

According to the conventional method, a new route to a destination is searched for at a point where it is recognized that the route has been deviated, and if a new route cannot be found, the route is deviated from the route. It provides guidance to return to the point intersection. Therefore, it may be necessary to make a U-turn without giving priority to the traveling direction of the car to return to that point, and it may take a long time to search for a route, which may require the driver to stop the car and wait. was there. SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicular navigation device that searches for and guides a route by giving priority to the traveling direction of a vehicle when the vehicle deviates from the route. It is another object of the present invention to provide a vehicular navigation apparatus that searches for and guides the shortest route from the current position to the first route when the vehicle deviates from the route.

[0004] In order to achieve the above object, a first aspect of the present invention is a vehicle navigation apparatus for performing route guidance according to a preset route to a destination. Means, a storage means for storing map information, and a deviation from a first route to a preset destination based on the current position information of the vehicle detected by the current position information detection means. Detecting means for detecting that the own vehicle has deviated from the first route by the deviated route detecting means,
An intersection setting means for setting at least one intersection on the first route based on map information within a predetermined distance range from the current position; and a first route based on the intersection set by the intersection setting means and the current position. Re-searching means for searching for a new route connecting to the first route, and second route creating means for creating a new second route by connecting the searched route to the first route by the re-searching means. It is in the structure provided with. A second aspect of the present invention is the invention according to the first aspect, wherein the intersection setting means sets a traveling direction and a penalty at the intersection. According to a third aspect of the present invention, there is provided a vehicle navigation apparatus for performing a route guide according to a preset route to a destination, a current position information detecting means for detecting current position information of the own vehicle, and a storage means for storing map information. Route departure detection means for detecting whether the vehicle deviates from a first route to a preset destination based on the current position information of the vehicle detected by the current position information detection means, and detection by the current position information detection means Based on the current location information of the own vehicle, the determination means for determining whether the current location of the own vehicle is on a road and the departure route detection means detect that the own vehicle deviates from the first route. And, when it is determined that the vehicle is on the road by the determining means, the traveling direction of the own vehicle is obtained based on the current position information of the own vehicle detected by the current position information detecting means, and A new second route from the current position of the own vehicle to the destination is searched in front of the row direction, and when it is determined that the current position information of the own vehicle is not on the road, the own vehicle's traveling direction is not considered without considering the traveling direction of the own vehicle. The present invention has a configuration including re-search means for searching for a new second route from the current location to the destination, and control means for controlling the guidance based on the second route searched by the re-search means. According to a fourth aspect of the present invention, in the third aspect of the present invention, the re-searching means determines the first route from the current location based on the current location information of the vehicle, the map information stored in the storage means, and the first route information. In the configuration, a route connecting to the route is searched, and a new second route is created by connecting the searched route to the first route. According to a fifth aspect of the present invention, in the third aspect of the invention, the re-search means calculates the entire route from the current location to the destination based on the current location information of the own vehicle and the map information stored in the storage means. Thus, the configuration is such that a new second route is created. According to a sixth aspect of the present invention, there is provided a vehicle navigation apparatus for performing a route guide according to a preset route to a destination, a current position information detecting means for detecting current position information of the own vehicle, and a storage storing map information. Means for detecting whether or not the vehicle has deviated from a first route to a preset destination based on the current position information of the vehicle detected by the current position information detecting means; Based on the current location information of the own vehicle, the determination means for determining whether the current location of the own vehicle is on a road and the departure route detection means detect that the own vehicle deviates from the first route. And when the determining means determines that the vehicle is on the road, the current running of the vehicle based on the current position information of the own vehicle detected by the current position information detecting means and the map information stored in the storage means. Re-search means for acquiring the traveling direction of the own vehicle on the road where the vehicle is traveling, and searching for a new second route from the current position of the own vehicle to the destination in the traveling direction of the own vehicle on the currently traveling road. And control means for controlling the guidance guidance based on the second route searched by the re-search means.

[0005]

According to the invention of claim 1, when the vehicle departure detecting means detects that the own vehicle deviates from the first route, the re-searching means sets the first vehicle set by the intersection setting means. The route connecting to the first route is searched for based on the intersection on the route and the current location hate of the vehicle. The route guidance is performed by a new second route created by connecting the searched route to the first route. In this way, a route connecting from the current location to the first route is searched for, and the route and the first route are connected to form a new second route. It is only necessary to search for a route to the point where the route returns to the first route, and the processing time required for the route search is short, and the new route should travel the same route as the original route (first route) as much as possible. You can also meet your desire to do so. In addition, at least one intersection on the first route is set based on map information within a predetermined distance from the current location, and a new route is searched based on the intersection, so that the process returns to the first route. The target data for selecting a point and searching for a new route is limited, and the processing time for the search can be reduced. According to the second aspect of the invention, by setting the traveling direction and the penalty at the intersection set on the first route, it is possible to quickly calculate the route joining the first route. According to the third aspect of the present invention, the departure route detecting means detects that the own vehicle has deviated from the first route. In addition, if the current position of the own vehicle is on the road, the re-searching means A new second route from the current position of the own vehicle to the destination is searched by giving priority to the traveling direction of the own vehicle based on the current position information of the own vehicle and the map information.
The route guidance is performed according to the searched route. Since the route guidance is performed in the traveling direction of the own vehicle when the departure of the route is detected, no burden such as a U-turn is imposed on the driver.
If the current position of the own vehicle is present on a place other than the road, such as a parking lot, the re-search means does not give priority to the traveling direction of the own vehicle based on the current position information and the map information of the own vehicle, and Search for a new second route from the current location to the destination. The route guidance is performed according to the searched route. Therefore, the route applied to the current position of the vehicle can be searched for and guided. According to the invention of the training item 4, the re-search means searches for a route connecting the current location to the first route, connects the searched route to the first route, and creates a new second route. By creating the route, the route that joins the first route can be calculated quickly. According to the invention of the fifth aspect, since the re-search means calculates the entire route from the current location to the destination and creates a new second route, it is difficult to travel during traffic congestion or construction. When the driver intentionally deviates from the route due to road conditions, the driver can search for another route while traveling when he wants to travel another route. If this function is not provided, it is necessary to search the route by inputting the current position and the destination from the place off the route again. According to the invention of the sixth aspect, the re-search means derives a route ahead of the own vehicle in the traveling direction, so that a burden such as a U-turn on the driver is eliminated. Furthermore, since the current position and the traveling direction of the vehicle are specified on the road on which the vehicle is currently traveling, and a route ahead of the current position is searched based on the information, the vehicle is located on the road on which the vehicle is actually traveling. A forward route can be derived from the current location.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a hardware configuration of a vehicle navigation device according to the present invention. The vehicular navigation device includes a map information storage unit 10 in which navigation data necessary for calculating a route, guidance data necessary for guidance, and the like are recorded, and a calculation unit 20 that controls the entire system.
And a voice control unit 30 that converts voice data into an analog signal in accordance with a guidance command from the arithmetic unit 20 and drives the speaker 34 to output a guidance voice, and displays a driver's request or a route guidance automatically on a screen. A display unit 28, an input unit 19 for inputting a destination and requesting route guidance, and a current position measuring unit 1 for determining a current position of the vehicle.
2, and a route storage unit 24 for storing route data corresponding to the destination calculated by the arithmetic unit 20. The map information storage unit 10 is a database in which all data such as map data and display guidance data necessary for route guidance are recorded, and among these data, data necessary for route search is a search data storage unit 10a. Is stored in

[0007] The current position measurement unit 12 is provided with position information of the vehicle received by a GPS receiver 14 using a satellite navigation system (GPS), azimuth information detected by an azimuth meter 16, and distance information detected by a distance meter 18. The current position of the host vehicle is determined based on the current position, and the current position information is sent to the arithmetic unit 20. Here, the compass 16 detects the current position of the host vehicle based on the geomagnetism. The distance meter 18 detects the traveling distance based on the number of rotations of the wheels. The input unit 19 inputs a destination or a route setting condition, instructs a re-search, and performs navigation according to the driver's intention so that the driver can obtain guidance information by voice and / or screen display when necessary. To the arithmetic unit 20. The calculation unit 20 stores the map information read from the map information storage unit 10 and the current position measurement unit 1
A route calculation unit 22 that calculates a route to the destination based on the current location information from the location information 2 and stores the route data in the route storage unit 24; a guide information and current location information stored in the map information storage unit 10; A route guidance control unit 26 that executes voice guidance and / or display guidance automatically or based on a request signal based on the route information.

[0008] The route calculation unit 22 includes a route guidance control unit 2
6, a route reconnecting from the current position of the host vehicle to a preset destination is recalculated according to a route re-search instruction from the input unit 19,
It has a recalculation function for connecting the recalculated route and a preset route to find a new route, and has a re-search means 22a as a means for realizing this function. Also,
The route calculation unit 22 also has a function of recalculating the entire route from the current position of the vehicle to the destination by the re-search means. The route guidance control unit 26 includes a route deviation detection unit 22a that detects whether or not the current position of the own vehicle is running outside a predetermined distance with respect to the selected route. Detects that the route is off,
The display of the guidance stop button 108b is deleted from the section diagram screen shown in FIG. That is, while the guidance stop function is stopped, the re-search button 108d shown in FIG. 3 is displayed, and the driver is prompted to re-search the route from the off-route point. The off-route detection can be performed using, for example, a method disclosed in Japanese Patent Application Laid-Open No. 1-173815.

The display section 28 is constituted by a color CRT or a color liquid crystal display, and is provided in an instrument panel near a driver's seat. The driver can check the current position of the vehicle by looking at the section map and the intersection map, obtain information on the route from now on, and at the intersection of the course change and the right and left turn at this intersection, etc. Confirmation. The display 28 includes a route setting screen, a route search map screen, a route re-search map screen, an entire route map screen, a section map screen, an intersection map screen, All screens required for navigation, such as the arrival guide screen, are output in color. The screen is provided with function buttons for setting route guidance, performing guidance during route guidance, and performing a screen switching operation. That is, the display unit 28
Is provided with a touch panel corresponding to the button display, and is configured to execute the above-described operation based on a signal input by touching the button. The input signal generating means including the buttons and the touch panel constitutes the input unit 19, but a detailed description thereof is omitted here.

[0010] By the way, as shown in FIG. 2, the section map screen 40 displayed after the guidance is started includes the route 100, the road 102 other than the route, and the mark 1 of the own vehicle on the route.
04 and a traveling direction mark 106 are displayed, and a function button 108 for accessing from this screen is provided. In this example, the route display 100 is displayed in red, and as a function button at the bottom, a detail button 108a for enlarging a part of the area, a guidance stop button 108b for stopping guidance guidance, and all routes are displayed. Has a wide area button 108c. If the current location of the vehicle deviates from the route by a predetermined distance during the guidance, the guidance stop button 108b disappears, and the display changes to the section diagram 40A in which the re-search button 108d shown in FIG. 3 is displayed. When the re-search button 108d is pressed, the route re-search is started, the route search diagram 50 shown in FIG. 4 is opened, and "Searching" is displayed on the screen.

The screen is provided with a reset button 108e for fixing the searched route.
When the reset button 108e is pressed, the screen 60 of the newly determined all route diagram shown in FIG. 5 is opened. In this example, the route closest to the first route from the deviated point is A
The route to the point is additionally displayed on the previous route. Here, the previous route is a first route as a route to a preset destination, and a route in which a route to point A is added to the previous route is searched with priority given to the traveling direction of the own vehicle. , A new second route from the current position of the vehicle to the destination. By pressing the guidance start button 108f, the guidance guidance is started again. Voice control unit 30
According to the voice guidance command from the route guidance control unit 26, the voice, phrase, one sentence, sound, and the like read from the voice storage unit 32 are synthesized and output from the speaker 34. The voice storage unit 32 stores compressed voice guidance data such as operation guidance for setting a route, voice guidance data of a target name on a route, and guidance voice data necessary for voice guidance during route guidance. . In addition, the voice control unit 30
When the route guidance control unit 26 instructs the display of the entire route diagram, the target name displayed on the all route display screen is output from the speaker 34 as guidance voice. In this example, as a guidance voice of the target name, for example, "it is a route passing through the expressway Nagoya interchange" is output.

Next, a description will be given of a route re-search process when a route deviates. FIG. 6 is a flowchart illustrating a first example of the route re-search processing. This embodiment is characterized by a route search for quickly joining the first route by giving priority to the traveling direction of the car with respect to the first route giving priority to the shortest distance when the vehicle deviates from the route. . The off-route detection is performed by timer interrupt processing.
When a deviation from the route is detected (S1), a re-search button is displayed as shown in FIG. 3 (S2). Next, it is determined whether the vehicle is on the route (S3). You may return to the route as soon as you notice that you are off the route. In such a case, it is determined in S3 that the vehicle is on the route,
The display of the re-search button is deleted (S4), and the process returns to S1. It is determined whether the re-search button has been pressed on the condition that the user is off the route (S5). If it is not pressed, it is determined again whether it is on the route (S3). When the search button is pressed and turned on, a peripheral route recalculation routine starts.

FIG. 7 shows a processing flow of the peripheral route recalculation routine. 8 and 9 show a processing flow of a traveling direction and a penalty calculation routine at each intersection in a direction to return to the previous route. FIG. 10 illustrates the processing contents of each step in the peripheral route recalculation processing. When the peripheral route recalculation routine is started, first, search data around the current location of the vehicle is read from the search data storage unit 10a of the map information storage unit 10 (S6) (see FIG. 10A). Then, the road sequence data of the route (hereinafter referred to as "previous route") that has been guided before leaving the route is acquired from the route storage unit 24 (S7) (see FIG. 10 (2)). Note that a route is defined by a row of roads (arrows on the route) obtained by connecting roads between intersections. Also,
For each road between the intersections, the direction from the traveling direction of the own vehicle to the preceding route is weighted. “Acquisition” means copying data from the route storage unit 24 to the work area of the route calculation unit 22.

Then, the traveling direction and the penalty at each intersection are calculated in the direction of returning to the previous route (FIG. 10).
(3)). That is, initialization is performed for all the current intersections, the state flag is not searched, the penalty is ∽, and the traveling direction is set to nothing (S100). A traveling direction and a penalty are set at the intersection on the previous route around the current location, and each intersection is determined to be under search (S101). It is determined whether there is an intersection under search (S102). If there is an intersection under search, an intersection with the minimum penalty is searched for (S103). If an intersection is found, the state flag of the intersection is changed to searched (S104). The penalty of the intersection connected to the relevant intersection is calculated (S105). This penalty is calculated based on the distance, road width, traffic light, right / left turn, and the like.
In addition, "∽" is used when entry is prohibited, when the vehicle is not connected by one-way traffic, and during U-turn.

It is determined whether the calculated penalty is smaller than the previous penalty (S106). If it is larger, it is determined whether there is another connecting intersection (S111). If smaller, the penalty is updated (S107) and the traveling direction is updated (S108). It is determined whether the state flag of the connection intersection is being searched (S109), and if it is being searched, it is determined whether there is another connection intersection (S11).
1). If the connecting intersection is not being searched, the status flag of the connecting intersection is changed to "searching" (S110). Thereafter, it is determined whether there is another connection intersection (S11).
1). If there is no other connecting intersection, the process returns to S105, calculates the penalty of the connecting intersection connected to the relevant intersection, and performs the processing of S106 to 111 based on the result. On the other hand, if there is another connecting intersection, the process returns to S102, and a process of determining whether there is an intersection under search is performed, and the processing ends.

Returning to the processing of FIG. 7, the current location road and traveling direction of the vehicle are acquired based on the current location information from the current position measurement unit 24 and the map information from the map information storage unit 10 (S8) (S8). FIG. 10 (4)). Subsequently, a search from the current position to the previous route is performed based on the traveling direction at each intersection calculated in the processing of FIGS. 8 and 9 (S9).
(See FIG. 10 (5)). Route found (new route)
Then, the road sequence is created using the preceding route and the preceding route as a guide route from now on (S10) (see FIG. 10 (6)).
Based on this recreated road sequence, the entire route map is displayed, press the reset button, set the recalculated route data stored in the route storage unit, and then press the guidance start button on the screen , A new guidance is started. Further, instead of the traveling direction at each intersection, the traveling direction may be weighted for each road between the intersections.

FIG. 11 is a flowchart showing a second embodiment of the route re-search processing. This embodiment is characterized by a route search that considers the traveling direction without considering the first route when the vehicle deviates from the route. This route re-search is performed on the screen 70 of the route search diagram used when setting the route shown in FIG. The screen 70 is provided with a search button 108g for instructing execution of a route search. First, using the map information and the current location information,
It is determined whether there is a route from the departure point to the destination (S20). If there is no route, it is determined whether the search button has been pressed (S21). If the search button has not been pressed, this route search ends. On the other hand, if the search button is pressed, it is determined whether the vehicle is traveling (S22). If the vehicle is traveling, the entire route calculation routine taking the traveling direction into consideration (hereinafter, the "first all route calculation routine")
Start). If the vehicle is not running, it is determined whether the vehicle is on the road (S23). When the vehicle is on the road, that is, when the vehicle is stopped on the road, the first all-route calculation routine is started. If the vehicle is not on the road, that is, if the vehicle is in a place such as a parking lot or a private property, a whole route calculation routine that does not consider the traveling direction (hereinafter, referred to as a “second whole route calculation routine”) is started.

In step S20, if there is a route, the guide stop button is pressed to determine whether or not the vehicle is in the guide stop mode (S24). (S27).
If the mode is not the guidance stop mode, it is determined whether or not the vehicle is on the route (S25). If the vehicle is on the route, the re-search button is deleted (S26), and this process ends. On the other hand, if it is not on the route, a re-search button is displayed (S27), and it is determined whether the button has been pressed (S28). If so, a first all-route calculation routine is started. If the button has not been pressed, this process ends.

The first all route calculation routine will be described with reference to FIG. 12. First, the current road and the traveling direction are obtained from the current position information and the map information (S30), and the destination road is obtained from the inputted destination information and map information. (S3
1). Next, the search data from the current position to the destination is read (S32), and the route between them is recalculated and searched (S33). The subsequent operation screen is displayed in the same manner as in the first embodiment. The second all-route calculation routine will be described with reference to FIG. 13. First, a current road is obtained from current position information and map information (S40), and a destination road is obtained from input destination information and map information (S41). .
Next, the search data from the current position to the destination is read (S42), and the route between them is recalculated and searched (S42).
43). The subsequent operation screen is displayed in the same manner as in the first embodiment.

FIG. 15 is a flowchart showing a third embodiment of the route re-search processing. In the present embodiment, when the vehicle deviates from the route, a first route search that considers the traveling direction without considering the first route is performed, and a second route that considers the traveling direction without considering the first route is used. It is characterized in that a search and a search are selectively used depending on conditions. Note that the first route search is performed by the first route search shown in FIG.
Since the peripheral route recalculation routine shown in FIG. 7 and S1 to S4 of the embodiment and the entire route recalculation routine shown in FIG. 13 are used in the second route search, the description of the contents is omitted here. First, a first route search process is executed, and a re-calculation of a peripheral route is performed. From this result, it is determined whether or not a route search has been performed (S50). When a route has been searched, search termination processing based on the route is performed. If the route cannot be searched due to dead ends, etc.
Is performed, and all routes are recalculated. As a result, when a route is searched, search termination processing is performed by the route.

In this embodiment, it is determined whether or not a route search has been performed as a setting condition of the present system. Alternatively, for example, a shorter distance to a destination may be used as a determination condition. . That is, if there is no route that can be connected to the original route as a result of the peripheral route recalculation, the entire route from the position where the re-search button is pressed to the destination is recalculated. It is also possible for the system to compare the two routes in advance, and to perform output processing based on the shorter distance to the destination as a determination condition. Thereby, careless detour can be prevented. Further, it is also possible to select and input a condition prepared in advance on the route re-search setting screen.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a system configuration of a vehicle navigation device according to the present invention.

FIG. 2 is a diagram showing an example of a section diagram screen display.

FIG. 3 is a diagram showing an example of a screen display of a section diagram when a route deviates;

FIG. 4 is a diagram showing an example of a screen display of a route re-search diagram.

FIG. 5 is a diagram showing an example of a screen display of all route maps after a route re-search.

FIG. 6 is a flowchart up to recalculation of a peripheral route in a process of searching for a shortest route to a previous route.

FIG. 7 is a flowchart of peripheral route recalculation.

FIG. 8 is a flowchart of a traveling direction and a penalty calculation at each intersection in a direction to return to the previous route.

FIG. 9 is a flowchart following FIG. 8;

FIG. 10 is a diagram for explaining each processing content in peripheral route recalculation.

FIG. 11 is a flowchart of another route re-search process.

FIG. 12 is a flowchart of the entire route calculation in consideration of the traveling direction.

FIG. 13 is a flowchart of the entire route calculation without considering the traveling direction.

FIG. 14 is a diagram showing an example of a screen display of a route search diagram.

FIG. 15 is a flowchart of a process for automatically selecting a shortest route search to a previous route and a new route search by all routes.

[Explanation of symbols]

10: map information storage unit, 12: current position measurement unit, 14 ...
GSP receiver, 16 azimuth sensor, 18 distance sensor, 20 arithmetic unit, 22 route calculation unit, 26 route guidance control unit, 28 display unit, 30 audio control unit, 32 audio storage unit, 40 audio unit Section diagram, 50 ... Route re-search diagram, 60 ...
All route map, 70: route search diagram, 100: guidance route (all route display), 102: road display other than route,
108… Function button

Continuation of the front page (56) References JP-A-63-163210 (JP, A) JP-A-61-38518 (JP, A) JP-A-5-313574 (JP, A) JP-A-61-216099 (JP) JP-A-6-165587 (JP, A) JP-A-63-150619 (JP, A) JP-A-3-272415 (JP, A) JP-A-4-320292 (JP, A) 61-216100 (JP, A) JP 2 20642 (JP, Y2) International Publication 92/4683 (WO, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G01C 21/00 G08G 1/0969 G09B 29/10

Claims (6)

(57) [Claims] 1. A vehicular navigation apparatus that performs route guidance according to a preset route to a destination, comprising: a current location information detection unit that detects current location information of a vehicle; a storage unit that stores map information; based on the current position information of the own vehicle detected by the current position information detection means, and root out detecting means for detecting whether or not out of the first route to a preset destination, by the route out detecting means itself The vehicle is in the first route
A predetermined distance from the current position when it is detected
Based on the map information in the range, at least
Intersection setting means for setting one intersection, and the intersection and current position set by the intersection setting means
Search for a new route connected to the first route based on
Re-searching means, and a route searched by the re-searching means,
Create a new second route by connecting to a route
And a second route creating means . 2. The method according to claim 1, wherein said intersection setting means sets an intersection at an intersection.
2. A direction and a penalty are set.
The vehicle navigation device according to any one of the preceding claims. 3. A vehicular navigation apparatus for performing a route guidance according to a preset route to a destination, a current position information detecting means for detecting current position information of the own vehicle, a storage means for storing map information, Route departure detection means for detecting whether or not the vehicle deviates from a first route to a preset destination based on the current position information of the vehicle detected by the current position information detection means; and detection by the current position information detection means. Determining means for determining whether or not the current position of the own vehicle is on a road, based on the current position information of the own vehicle, and detecting that the own vehicle has deviated from the first route by the route deviation detecting means. and, and when it is determined that the road by the determining means, the current position information detected hand
The current position information of the own vehicle detected by the step
Acquires the direction of travel and obtains the current
Search for a new second route from your location to your destination
When it is determined that the current location information of the vehicle is not on the road
Re-search means for searching for a new second route from the current position of the own vehicle to the destination without considering the traveling direction of the own vehicle; and providing guidance based on the second route searched by the re-search means. A vehicle navigation device, comprising: a control unit for controlling the vehicle. 4. The re-search means determines a route connecting the current location to the first route based on the current location information of the vehicle, the map information stored in the storage means, and the information on the first route. Searching, and searching the searched route for the first
The vehicle navigation apparatus according to claim 3 , wherein a new second route is created by connecting to the second route. 5. A new second route by calculating all routes from a current location to a destination based on current location information of the vehicle and map information stored in the storage unit. 4. The method according to claim 3, wherein
On-board vehicle navigation device. 6. A vehicular navigation apparatus for performing a route guidance according to a preset route to a destination, a current position information detecting means for detecting current position information of the own vehicle, a storage means for storing map information, Based on the current location information of the vehicle detected by the current location information detection means, a route departure detection means for detecting whether or not the vehicle has deviated from a first route to a preset destination; Determining means for determining whether or not the current position of the own vehicle is on a road based on the current position information of the own vehicle; and detecting that the own vehicle has deviated from the first route by the deviated route detecting means. And when the determination means determines that the vehicle is on a road, the current position information detection
Current position information of the own vehicle detected by the step and the storage means
Road currently running based on the map information recorded in
The traveling direction of the vehicle at
From the direction of travel of your vehicle on the road you are currently driving
Vehicle, characterized by comprising: a re-searching means for searching a new second route to the destination in the way, and a control means for controlling the leading guide by the second route searched by該再searching means Navigation device.