JP2004317275A - Navigation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress the generation of the route guidance unnecessary for a user. <P>SOLUTION: When a guidance route 602 to the destination 601 is set, and in the case of turning to the left at the point 611 by mistake to enter a strange road, another guide route 603 from the position after the turning to the left to the destination 601 is set, and the voice guidance announcing the deviation from the guidance route is performed, and the display of a intersection point guidance image or the guidance for turning to the right or left at the intersection point is performed thereafter. Alternatively, in the case of turning to the right at the point 612, for the purpose of stopping at a convenience store 620 through the route 621 registered in advance for the destination 601, the voice guidance announcing the deviation from the guidance route is not performed, or the display of the intersection point guidance image or the guidance for turning to the right or left at the intersection point is not performed thereafter. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a navigation device that guides a user to travel.
[0002]
[Prior art]
2. Description of the Related Art In a navigation device mounted on an automobile, as a technique for guiding a user's traveling, conventionally, a destination setting is received from a user on a map, and a guidance route is set and set to the received destination. 2. Description of the Related Art A route guidance technique of displaying a guidance route on a map to guide traveling along the guidance route is widely used.
[0003]
In a navigation device that performs such route guidance, a technique is also known in which, when a vehicle deviates from a guidance route, a route to a destination is automatically re-searched and set as a new guidance route. (For example, JP-A-09-152351). In addition, when performing such a re-search for a guide route, there is also known a technique of searching for a route that returns to the original guide route with priority. (For example, JP-A-10-153446).
[0004]
Further, in the navigation device that performs such route guidance, when the vehicle approaches a crossing where a right or left turn is to be made when the vehicle travels along the guidance route for a predetermined distance, the crossing is performed until the user passes the crossing. (For example, Japanese Unexamined Patent Application Publication No. 2003-14476) and a technology for providing voice guidance for turning right and left at the intersection (for example, Japanese Unexamined Patent Application Publication No. 07-055488) are also known.
[0005]
Further, as a technique for determining the arrival of a vehicle at a destination in a navigation device that performs the above-described route guidance, there is a technique in which a vehicle stops at a position within a predetermined distance from the destination. A technique for determining that a vehicle has arrived (for example, Japanese Patent Application Laid-Open No. 07-063568), and a method in which a vehicle reaches a destination within a predetermined distance from a destination on a final link in front of a destination on a guidance route. A technique for determining that the vehicle has arrived (for example, Japanese Patent Application Laid-Open No. 07-055488) is known.
[0006]
Prior art document information related to the invention of this application includes the following.
[0007]
[Patent Document 1]
JP 09-152351 A
[0008]
[Patent Document 2]
JP-A-10-153446
[0009]
[Patent Document 3]
JP 2003-14476 A
[0010]
[Patent Document 4]
JP 07-055488 A
[0011]
[Patent Document 5]
Japanese Patent Application Laid-Open No. 07-063568
[0012]
[Problems to be solved by the invention]
By the way, the user may intentionally deviate from the guidance route without resetting the guidance route during the route guidance along the guidance route as described above. For example, if the destination of the guidance route is a point that the user has visited many times, and if the user knows the road around the destination to some extent, before the arrival at the destination, the destination outside the guidance route near the destination is , You want to stop by a convenience store you know for a long time. In such a case, the user knows the route to be used from the point deviating from the guidance route to the destination via the convenience store, and plans to use such a route by himself. Can be thought of.
[0013]
On the other hand, according to the conventional technique of automatically resetting a guidance route when deviating from a guidance route, a route planned by a user at the time of deviation from the route unless the user explicitly instructs the end of the route guidance. The route different from the guide route may be reset as the guide route, and the deviation from the guide route and the resetting of the guide route may occur repeatedly due to the difference between the route set by the user and the route planned by the user. . In particular, according to the conventional technique of searching for a route that returns to the original guide route with priority, there is a high possibility that the deviation from the guide route and the resetting of the guide route may occur repeatedly.
[0014]
Such resetting of a guidance route different from the route planned by the user may cause unnecessary voice guidance (notification of route departure, guidance of turning right or left at an intersection, etc.) or display of an intersection guide map. become. Moreover, voice guidance and display unnecessary for these users are troublesome for the users. Further, the display of the intersection guide map that is unnecessary for the user also hinders the display and visual recognition of other information necessary for the user.
[0015]
Accordingly, an object of the present invention is to suppress occurrence of unnecessary route guidance for a user when the user intentionally deviates from a guidance route.
[0016]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a navigation device which sets a guidance route to a destination and provides a route guidance for guiding a user traveling along the set guidance route. When the current position has advanced to a related road section which is a preset road section around the destination with respect to the destination, the route guiding means simplifies the mode of the subsequent route guidance performed thereafter. Control means.
[0017]
According to such a navigation device, by setting in advance, as the related road section, a road section around a destination where the user has traveled at a frequency equal to or higher than a predetermined frequency in the past, the user can intentionally set a guidance route. And unnecessary route guidance for the user after going to such a related section can be suppressed by simplifying the mode of the route guidance.
[0018]
Here, in such a navigation device, even when the current position has proceeded to the related road section, the control means does not deviate from the guidance route and proceed to the related road section. May not allow the route guidance means to simplify the mode of the subsequent route guidance. In this case, it is unlikely that the navigation device will provide unnecessary route guidance for the user.
[0019]
Further, in the control means, instead of simplifying the mode of the route guidance after the route guidance means performs, the route guidance means may end the route guidance.
Further, when a navigation route is set in the navigation device, history means for collecting traveling history of a road section around the destination of the navigation route in association with the destination, and based on the history. A road section around a destination that has been driven at a frequency equal to or higher than a predetermined frequency in the past, or a road section selected by a user from road sections near a destination that has been driven at a frequency equal to or higher than a predetermined frequency in the past, It is also preferable to provide a related road section setting means for setting the related road section as the related road section for the destination associated with the above, in order to save the user's setting of the related road section to the destination.
[0020]
Further, these navigation devices are provided with a guidance route resetting means for resetting a guidance route from the current position to the destination when the current position deviates from the guidance route. The detailed mode route guidance which is at least one of the normal mode route guidance which is the route guidance by the screen representing the current position and the guidance route, and the route guidance by displaying the route guidance by voice and the intersection guide map at the position before the intersection is provided. In the case of performing, when the current position has advanced to a related road section which is a preset road section around the destination with respect to the destination, the route guidance means may include: By stopping the detailed mode route guidance, the mode of the route guidance to be performed thereafter may be simplified.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described.
FIG. 1 shows a configuration of a navigation device according to the present embodiment.
As shown in the figure, the navigation device includes a control device 1 and a DVD storing map data. A recording medium drive 2 for accessing a storage medium 21 such as a ROM or a hard disk, a GPS receiver 3, a running state sensor 4 for detecting a running state of a vehicle such as an angular acceleration sensor or a vehicle speed sensor, and a remote controller for receiving an input from a user 5 (remote controller), a display device 6 and a speaker 7.
[0022]
Further, the control device 1 includes a map data buffer 101, a map data read processing unit 102, a current state calculation unit 103, a route search unit 104, a navigation image generation unit 105, a memory 106, a main control unit 107, a GUI control unit 108, a speaker And an audio output unit 109 that outputs audio to the audio output unit 7. Here, a dotted line 121 inside the control device 1 in FIG. 1 indicates an access route of each unit to the map data stored in the map data buffer 101, and a bold line 122 indicates control information between the units and a route of each unit of various data. , A thin line connected to the GUI control unit 108 indicates a path of operation information and image information input / output to / from the user using the remote controller 5 or the display device 6.
[0023]
However, the above control device 1 may be a CPU circuit having a general configuration including hardware such as a microprocessor, a memory, and other peripheral devices such as a graphic processor and a geometric processor in terms of hardware. In this case, each unit of the control device 1 described above may be realized as a process embodied by the microprocessor executing a prepared program. In this case, such a program may be provided to the control device 1 via the storage medium 21 or an appropriate communication path.
[0024]
Next, the configuration of map data stored in the storage medium 21 will be described.
Here, the map data is managed in units called maps for each predetermined geographical area, and each map is composed of a plurality of levels according to the level of detail of the map. The map at each level of each leaf is composed of one or a plurality of units, and each unit corresponds to the geographical area of the leaf to which it belongs, or an area obtained by dividing the geographical area, and maps the corresponding area. , At the level to which it belongs.
[0025]
Then, as shown in FIG. 2, the map data includes management data describing the relationship between each unit and a figure, a corresponding area and a level, basic map data representing a map, route data, point management data, and voice resources. It is comprised including.
[0026]
Here, the basic map data includes the above-described unit data for each unit, and unit management data that describes a relationship between each unit data and a figure, a corresponding area, and a level. Each unit data includes a road unit representing a road network in the unit, a drawing unit for defining a display map in the unit, and an intersection information unit for guiding traveling at an intersection.
[0027]
The road unit has a node list, a link table, and connection data describing the connection and correspondence of nodes and links with other units.
Here, in the road unit, the road is represented as a set of links that are straight lines, and the end point of each link is a node. Such a node is always provided at a connection point of a road such as an intersection, and is always provided at a boundary between adjacent units. In addition, each link has a direction, and only one link in the traffic direction is provided between two nodes adjacent to each other via the link when the road is a one-way road. Is basically provided with two links in opposite directions.
[0028]
Now, the node list includes a node record for each node. Each node record includes a node number, node coordinates, a node attribute indicating whether the node is a node corresponding to an intersection, and a link of a link connected to the node. A connection link number list, which is a list of link numbers, and an adjacent node number list, which is a list of node numbers of nodes adjacent to a node via a link, are described.
[0029]
Next, the link table includes a link record for each link. Each link record includes a link number, a node number 1 of a node serving as a link start point, a node number 2 of a node serving as a link end point, and a link number corresponding to a link. A road attribute indicating various kinds of information about a section of the road to be linked, a link distance, a link direction, a link cost as a route search cost given to the link, a route number of a route to which the link belongs, and the like are described. Here, as the road attribute, a road type indicating a type of a road to which the link belongs, such as a toll road, a national road, a prefectural road, and the like, a road width, the number of lanes, the presence or absence of a median strip, and the like of a road section corresponding to the link are described. You.
[0030]
Next, the drawing unit includes geographical display elements such as topographical figures, road figures, and facility figures, character information to be displayed on a map such as a regional name and a facility name, and facilities such as a gas station on the map. This defines a facility mark or the like to be displayed to indicate the existence of the facility.
[0031]
Next, the intersection information unit has an intersection record provided for each intersection that performs travel guidance. Each intersection record includes a corresponding node indicating the node number of a node corresponding to the intersection, and data for each passing direction. Is described.
The data for each passing direction is a set of a link ending at the node corresponding to the intersection and a link ending at the node corresponding to the intersection, and the route to which the two links in the set belong is different for each of the different sets. There is a record for each passing direction provided. That is, a record for each passing direction is provided for each of the types of travel route changes that the user can make at the intersection. Each passing direction record is an entry link indicating a link number of a link that is a link entering the intersection in a form of intersection passing corresponding to the passing direction record, and a link number of a link that is a link exiting from the intersection. , An intersection guidance image which is a still image displayed as intersection guidance for a corresponding intersection-passing mode of travel, and a voice data record to be described later in a voice resource used as voice guidance for the corresponding intersection-passing mode of travel. And an intersection guidance voice pointer describing the identifier.
[0032]
Next, the point management data included in the map data has a point record provided for each of a plurality of points prepared in advance as destination candidates, and the point record includes a point number serving as a point identifier and a point number as a point. Stored are location types representing types such as a gas station and a convenience store of a certain facility, the name of the facility at the location, the telephone number of the facility at the location, and the coordinates of the location.
[0033]
Next, the voice resource included in the map data includes a plurality of voice data records.Each voice data record includes an identifier of the voice data record and a user such as a right or left turn guidance by voice when passing through an intersection. Voice data of various voices used for voice guidance to be performed is stored.
Finally, the route data included in the map data has a route record provided for each road, and each route record includes a route number that is an identifier of a road, an expressway of each road, a national road, Line types such as prefectural roads and line names of each road are described.
Next, parameters stored in the memory 106 of the control device 1 in FIG. 1 will be described.
[0034]
As shown in FIG. 3, the memory 106 stores current state information 301, destination data 302, guidance route data 303, a point-related link table 304, and point-related traveling history data 305.
The current state information 301 includes current position data 3011, current driving direction data 3012, and running link data 3013. The current position data 3011 is data representing the current position coordinates of the vehicle. And the traveling link data 3013 is data indicating the link number of the currently traveling link. The destination data 302 represents the coordinates of the destination on the link.
[0035]
The guide route data 303 is data representing a guide route, and describes a route link list 3031 in which link numbers of links through which the guide route passes are described in order of passing, and node numbers of nodes through which the guide route passes in order of passing. And a root node list 3032.
[0036]
Further, in the point-related link table 304, a plurality of point-related link records in which the point number of the point and the link number of one or a plurality of links associated with the point can be registered.
Next, the point-based travel history data 305 is provided for each point that has been set as a destination. Each point-based travel history data 305 includes the point number of the corresponding point and the For each link that has traveled within a predetermined distance from the destination when it is a ground, it has a link number of the link and a history record for registering a travel history of the link. Then, in the travel history, the number of times the link has been run and the date and time when the link has been run are registered.
[0037]
Returning to FIG. 1, in such a configuration, under the control of the main control unit 107, the map data reading processing unit 102 reads out a required range of the map data from the storage medium 21 via the recording medium drive 2 and reads the map data. The data is stored in the buffer 101.
Further, the current state calculation unit 103 repeatedly performs the following processing.
That is, the current state calculation unit 103 performs map matching of the current position estimated from the output of the traveling state sensor 4 and the GPS receiver 3 with a map around the previously determined current position read from the map data buffer 101. By performing processing, etc., the most probable link coordinates as the current position, the most probable link direction as the current traveling direction, and the most probable link as the current traveling link are respectively represented by the current position coordinates and the current traveling direction. Is determined as the traveling link, and is set in the current position data 3011, the current traveling direction data 3012, and the traveling link data 3013 of the memory 106.
[0038]
Further, the main control unit 107 accepts a selection of a destination from the points registered in the point management data via the remote controller 5 and the GUI control unit 108 from the user in response to the destination setting request of the user, and selects the destination. The location number and the location coordinates of the performed location are set in the destination data 302. The reception of the setting of the destination is performed, for example, by accepting the specification of the telephone number of the facility of the point as the destination from the user, and setting the point registered in the point record of the point management data in which the received telephone number is registered as the destination. Or the specification of the type of facility at the point you want to be the destination from the user, the received type is registered as the point type, and the registered point coordinates are registered in the point record around the current position. This is performed by displaying a list of names, accepting designation of a point name as a destination from the displayed list, and setting a point registered in a point record of the point having the accepted point name as the destination.
[0039]
When the destination data 302 is set, the main control unit 107 causes the route search unit 104 to search for a guidance route to the destination indicated by the destination data 302. The route search unit 104 reads the road data of the road unit in the required geographic range from the map data buffer 101, and travels from the current position coordinates indicated by the current position data 3011 of the memory 106 to the destination coordinates indicated by the destination data 302. A guide route that first follows the link indicated by the middle link data 3013 is calculated based on a predetermined cost model using the link cost of the link record, and the route data of the calculated guide route is stored in the route link list of the guide route data 303. 3031 and the root node list 3032 respectively.
[0040]
Further, the main control unit 107 repeats the following navigation image generation processing.
That is, the main control unit 107 determines the direction corresponding to the traveling direction indicated by the current traveling direction data 3012 as the display direction, determines the scale according to the user setting or initial setting made in advance, and determines the current position data 3011 A predetermined range around the indicated current position and determined according to the determined display orientation and the determined scale is determined as the display range. Here, the display direction is calculated such that the current running direction is always upward.
[0041]
Then, the navigation image generation unit 105 draws a map display element, a character string, or a facility mark represented by the drawing unit based on the drawing unit in the determined display range, and a direction corresponding to the direction indicated by the current traveling direction data 3012. Is drawn at a position corresponding to the current position indicated by the current position data 3011 with the azimuth indicated by the determined display azimuth upward. When the effective guidance route data 303 is set, that is, during route guidance, the main control unit 107 causes the navigation image generation unit 105 to display the current guidance route data 303 indicated by the guidance route data 303 in the determined display range. The navigation image generation unit 105 draws a guidance route graphic representing a guidance route on the destination side from the position, with the orientation indicated by the determined display orientation facing upward. When the route is being guided and the destination is included in the display range, the main control unit 107 causes the navigation image generation unit 105 to draw a destination mark indicating the position of the destination.
[0042]
Under the control of the main control unit 107, the navigation image generation unit 105 generates the navigation image by performing the above-described drawing, and displays the navigation image on the display device 6 via the GUI control unit 108.
FIG. 4A shows an example of the navigation image displayed in this manner. As shown, the navigation image is displayed on a map image 401 on which a map display element, various character strings, and facility marks are displayed. The position mark 402, the guide route figure 403, and the destination mark 404 are represented. However, when the guide route data is not set and the route is not being guided, the guide route graphic 403 is not drawn as described above. In addition, when the destination is not included in the display range, the destination mark 404 is not included in the display.
[0043]
By the way, the main control unit 107 accumulates the traveling history in the point-based traveling history data 305 in addition to the above processing during the route guidance displaying the guidance route graphic based on the guidance route data as described above. Perform processing.
That is, the main control unit 107 monitors that the current position indicated by the current position data 3011 is within a predetermined distance (for example, within 3 to 5 km) from the destination indicated by the destination data 302 during route guidance, and Within this range, each time the link number indicated by the traveling link data 3012 is updated, the traveling link data 3012 of the point-based traveling history data 305 in which the point number indicated by the destination data 302 is registered is indicated. The process of registering the current date and time in the travel history of the history record in which the link number is registered is performed until the end of route guidance. However, if there is no point-based traveling history data 305 in which the point number indicated by the destination data 302 is registered, such point-based traveling history data 305 is created, and the traveling link data 3012 is If there is no history record in which the indicated link number is registered, such a history record is created, and the current date and time are registered.
[0044]
When the destination data 302 is set, the main control unit 107 checks the presence / absence of the point-based travel history data 305 in which the point number indicated by the destination data 302 is registered. If the 305 exists, the following processing is performed.
That is, first, of the dates registered in each history record of the point-based traveling history data 305, dates past a certain period (for example, six months) from the current date and time are deleted, and then registered in each history record. The number of dates is counted and registered as the number of times in the travel history of the history record. Then, a link number registered in a history record whose number of times is equal to or more than a predetermined value (for example, 3 to 5 times) is extracted, and the extracted link number is set as a registration candidate link number. Next, it is checked whether or not a point-related link record in which the point number indicated by the destination data 302 is registered exists in the point-related link table 304. If not, the registration candidate link number is used as the registration target link number. I do. On the other hand, if such a location-related link record exists, the link numbers registered in the location-related link record that are not registered candidate link numbers are deleted from the location-related link record, and the registration candidate Among the link numbers, registration candidate link numbers that are not registered in the point-related link record are set as registration target link numbers.
[0045]
Then, via the GUI control unit 108, the display on the display device 6 is displayed from the navigation image, for example, as shown in FIG. 4B, in the form of a map 411 around the destination, with the link 412 indicated by the registration target link number highlighted. The display is switched to the image drawn together with the destination display 413. Then, a window 414 is displayed, and when the user deviates from the guidance route and proceeds to the link indicated by the registration target link number, the user is asked whether to stop the detailed guidance. , The display is returned to the navigation image, and the process is terminated.
[0046]
On the other hand, if the user selects to stop, the registration target link number is registered in the point-related link record in which the point number indicated by the destination data 302 of the point-related link table 304 is registered. However, when there is no point-related link record in which the point number indicated by the destination data 302 is registered, such a point-related link record is created and registered. Then, the display is returned to the navigation image, and the process ends.
[0047]
As a result of the above processing, the point-related link record in the point-related link table 304 includes the destination when the user repeatedly performs the route guidance with the point corresponding to the point-related link record as the destination within a certain period in the past. The link number of the link that has run around the ground is registered.
[0048]
By the way, the main control unit 107 performs the route detailed guidance process during route guidance using such a point-related link table 304.
FIG. 5A shows the procedure of this detailed route guidance processing.
As shown, in this process, first, a related link monitoring process is started (step 502).
In the related link monitoring process, as shown in FIG. 5B, the traveling link data 3013 is acquired (step 552), and the link number of the traveling link indicated by the traveling link data 3013 is changed to the guidance indicated by the guidance route data 303. It is determined whether or not the link number registered in the point-related link record of the point-related link table 304 is not the link number of the link on the route but has the destination point number indicated by the destination data 302. The process is repeated (step 554). If they match, a simple mode flag is set (step 556), and the process ends. If there is no point-related link record in the point-related link table 304 having the destination point number indicated by the destination data 302, the determination in step 554 always does not match.
[0049]
Returning to the explanation of the detailed route guidance processing in FIG. 5A, if the related link monitoring processing is started in step 502, next, the current position coordinates are acquired from the current position data 3011 (step 504). Then, it is determined whether or not the distance from the destination coordinates indicated by the destination data 302 is equal to or smaller than a predetermined distance a (for example, 50 m to 300 m) (step 506). Assuming that the vehicle has arrived at the ground, the related link monitoring process is terminated, the guidance route data 303 is cleared, and the simple mode flag is cleared (step 520), and the process is terminated.
[0050]
On the other hand, if the distance is not shorter than the predetermined distance a, it is checked whether or not the simple mode flag is set by the related link monitoring process (step 508). If the simple mode flag is set, the process proceeds to step 512. If not, the process proceeds to step 510.
In step 510, it is determined whether or not the current position coordinates have approached the guidance target intersection within a distance b (for example, 200 m). Here, the guidance target intersection is an intersection on the guidance route indicated by the guidance route data 303, has a corresponding intersection record, and the intersection record corresponds to the passage form of the intersection according to the guidance route. This is the next intersection on the guidance route among the intersections having the records for each passing direction.
[0051]
Then, if the vehicle is not approaching the guidance target intersection less than the distance b, the process proceeds to step 512. If the vehicle is approaching less than the distance b, the intersection guidance process is started (step 522), and the process proceeds to step 512.
In the activated intersection guidance process, as shown in FIG. 4C, a guidance window 420 is set on the navigation image 401, and the intersection window follows the guidance route of the intersection record corresponding to the guidance target intersection in the guidance window 402. The intersection guidance image stored in the passing direction-specific record corresponding to the form is displayed. Also, by reading out the voice data of the voice data record indicated by the intersection guidance voice pointer stored in the record for each passing direction and supplying the voice data to the voice output unit 109, for example, "the next intersection is a left turn" The intersection right / left turn guidance is output by such voice. Then, the passage of the guidance target intersection at the current position is monitored, and when the vehicle passes through the guidance target intersection, the guidance window 402 is closed and the process is terminated.
[0052]
Returning to the description of FIG. 4A, in step 512, it is determined whether or not the current position has deviated from the guidance route with reference to the current state information 301 and the guidance route data 303. Return and repeat the above processing. On the other hand, if the vehicle deviates from the guide route, the route search unit 104 causes the route search unit 104 to search again for a guide route from the current position to the destination, and re-sets the route in the guide route data 303 (step 514). Then, it is determined whether or not the simple mode flag is set (step 516). If the simple mode flag is set, the process returns to step 504 to repeat the above processing. On the other hand, when the simple mode flag is not set, the voice output unit reads out the voice data of the voice data record prepared in advance in the voice resource, which indicates the voice notifying that the new guidance route has been set, and By supplying the signal to the speaker 109, the signal is output from the speaker 7 (step 518), and then the process returns to step 504 to repeat the above processing.
[0053]
FIG. 4D shows a navigation image when the user proceeds to the link 405 without following the guidance route 403 in FIG. 4A. In this case, as shown in FIG. A simple guidance route route 431 is set. At the same time, an audio output such as “The route has been departed. A new route will be set.” Is performed to the user.
[0054]
The embodiments of the present invention have been described above.
As described above, according to the present embodiment, during the route guidance, when the user repeats within the past fixed period and the route guidance is performed at the same time as the destination of the current guidance route, If the vehicle travels around a link (a link whose link number is registered in the point-related link record corresponding to the destination) and deviates from the guidance route, it may be necessary to turn right or left at an intersection or deviate from the guidance route. The voice guidance and the display of the intersection guidance image are stopped.
[0055]
Therefore, for example, when the guidance route 602 for the destination 601 is set as shown in FIG. 6, and when the vehicle has erroneously proceeded to the left at the point 611, the position after the left turn A new guidance route 603 from the to the destination 601 is set, voice guidance for departure from the guidance route is performed, and thereafter, display of an intersection guidance image of the intersection and guidance for turning right and left at the intersection by voice are performed. Therefore, the user can reach the destination 601 according to the new guidance route 603 without any trouble, while displaying the intersection guidance image and receiving the left / right turn guidance of the intersection by voice.
[0056]
On the other hand, when the guidance route 602 for the destination 601 is set, as usual, if the vehicle turns right at a point 612 around the destination to stop at the convenience store 620 through the route 621, , A new guidance route 604, a guidance route 605, and a guidance route 606 are set every time a deviation from the guidance route is detected. Neither the display of the guidance image nor the guidance of turning right or left at the intersection by voice is performed.
[0057]
Therefore, in such a case, the user does not have to bother with unnecessary voice output or display of the intersection guidance image. Further, the display of the unnecessary intersection guidance image does not impair the visibility of the navigation image 401 and the like. On the other hand, if the route to the destination 601 is lost, if the route guidance to the destination is followed by the guidance route displayed as the navigation image 401 at that time, the destination is not hindered. 601 can be reached.
[0058]
By the way, in the above embodiment, during the route guidance, when the user repeats within a certain period in the past and the route guidance is performed with the same time as the destination of the current guidance route as the destination, the user travels around the destination. When the user deviated from the guidance route to the link (the link whose link number is registered in the point-related link record corresponding to the destination), the navigation device continued to reset the guidance route thereafter. When the vehicle deviates from the guidance route to such a link, the subsequent navigation route may be reset or the route guidance may be stopped.
[0059]
That is, in this case, as shown in FIG. 7A, steps 508 and 516 are omitted from the processing shown in FIG. 5A (the processing that skips steps 508 and 516 and proceeds to the next step). Step 702 is provided instead, and it is checked whether the simple mode flag is set. If the simple mode flag is set, it is regarded that the vehicle has arrived at the destination, and the related link monitoring process is terminated. After clearing the guidance route data 303 and clearing the simple mode flag (step 520), the process may be terminated.
[0060]
Further, in the present embodiment, during route guidance, the user repeatedly travels around the destination when the route guidance is being performed with the destination being the same as the destination of the current guidance route within the fixed period of time. When the vehicle deviates from the guidance route to the link (the link whose link number is registered in the point-related link record corresponding to the destination), it may be modified so that only the route guidance output to the user is stopped. .
[0061]
That is, the detailed route guidance process is a process in which steps 508 and 516 are omitted from the process shown in FIG. 5A (a process in which steps 508 and 516 are skipped and the process proceeds to the next step), and the related process shown in FIG. The link monitoring processing may be the processing shown in FIG. 7B.
[0062]
That is, in the related link monitoring processing shown in FIG. 7B, the traveling link data 3013 is acquired (step 552), and the link number of the traveling link indicated by the traveling link data 3013 is changed to the destination indicated by the destination data 302. The process of determining whether or not it matches the link number registered in the point-related link record of the point-related link table 304 having the point number of (step 554). If they match, the display and audio output stop are set in the GUI control unit 108 and the audio output unit 109 (step 752), and the occurrence of an output restart operation from the user is monitored (step 754). Then, if there is an output restart operation by the user, the display and the sound output are restarted on the GUI control unit 108 and the sound output unit 109 (step 756), and the process ends.
[0063]
On the other hand, when the display output stop is set, the GUI control unit 108 suppresses the output of the navigation image 401 and the intersection guidance image to the display device 6. When the audio output stop is set, the audio output unit 109 suppresses the output of various guidance sounds to the speaker 7.
[0064]
In the related link monitoring process shown in FIG. 5B, after setting the simple mode flag (step 556), the link number of the traveling link indicated by the traveling link data 3013 is changed to the destination number indicated by the destination data 302. The simple mode flag may be released when the link number registered in the location-related link record of the location-related link table 304 with the location number is lost. In this way, after the user deviates from the guidance route, when the user proceeds to an unfamiliar link, guidance by voice or an intersection guidance image can be automatically restarted.
[0065]
Also, step 554 of the above related link monitoring process is performed in the point of the point related link table 304 where the link number of the traveling link indicated by the traveling link data 3013 has the destination point number indicated by the destination data 302. The processing may be configured to determine whether or not it matches the link number registered in the related link record. By doing in this way, even when the user does not deviate from the guidance route, when the user repeats within the past fixed period and the route guidance is being performed with the destination being the same time as the destination of the current guidance route, At the point when the vehicle travels around the link around the destination, after that, voice guidance for turning right or left at the intersection due to departure from the guidance route, display of the intersection guidance image, stop of route guidance, display, voice output The suspension can be performed.
[0066]
In the above description, the navigation image, the display of the intersection guidance image of the intersection, and the case where the route guidance is performed for the user by the voice guidance of turning right or left at the intersection or deviating from the guidance route have been described as an example. The present invention can be similarly applied to a navigation device that provides route guidance to a user in any form. In other words, during route guidance, the user repeats the route within the past fixed period, and when the route guidance is being performed with the same time as the destination of the current guidance route as the destination, the guidance route is added to the link that has run around the destination. When the vehicle deviates or simply proceeds, the route guidance provided by the navigation device may be simplified or stopped according to the type of route guidance available to the navigation device.
In addition, the present embodiment does not perform re-searching and resetting of the guidance route when deviating from the guidance route, and also provides a voice guidance indicating such a deviation from the route even in a navigation device that performs only voice guidance for the deviation of the route. Can be applied in the same way to suppress the
[0067]
【The invention's effect】
As described above, according to the present invention, it is possible to suppress the occurrence of unnecessary route guidance for the user when the user intentionally deviates from the guidance route.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration of a navigation device according to an embodiment of the present invention.
FIG. 2 is a diagram showing contents of map data according to the embodiment of the present invention.
FIG. 3 is a diagram showing contents of a memory according to the embodiment of the present invention.
FIG. 4 is a diagram showing an example of route guidance performed in the embodiment of the present invention.
FIG. 5 is a flowchart illustrating a procedure of a detailed route guidance process and a related link monitoring process according to the embodiment of the present invention.
FIG. 6 is a diagram showing an application example of route guidance according to the embodiment of the present invention.
FIG. 7 is a flowchart illustrating another procedure of the detailed route guidance process and the related link monitoring process according to the embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Control device, 2 ... Recording medium drive, 3 ... GPS receiver, 4 ... Running state sensor, 5 ... Remote control, 6 ... Display device, 7 ... Speaker, 21 ... Storage medium, 101 ... Map data buffer, 102 ... Map Data reading processing unit 103: current state calculation unit 104: route search unit 105: navigation image image generation unit 106: memory 107: main control unit 108: GUI control unit 109: sound output unit

Claims (8)

A navigation device that sets a guidance route to a destination and provides route guidance for guiding a user's traveling along the set guidance route,
Route guidance means for performing the route guidance,
A control unit that, when the current position advances to a related road section which is a preset road section around the destination with respect to the destination, causes the route guidance unit to simplify the mode of the route guidance to be performed thereafter And a navigation device comprising: The navigation device according to claim 1,
Even if the current position has proceeded to the relevant road section, the control means performs the following to the route guidance means if the vehicle has not deviated from the guidance route and has proceeded to the relevant road section. A navigation device wherein the mode of the route guidance is not simplified. A navigation device that sets a guidance route to a destination and provides route guidance for guiding a user's traveling along the set guidance route,
Route guidance means for performing the route guidance,
When the current position has proceeded to a related road section which is a road section around the destination which has been set at a destination in advance and which has been driven at a frequency equal to or higher than a predetermined frequency in the past, the route guidance means includes: Control means for ending the navigation. The navigation device according to claim 3, wherein
Even if the current position has proceeded to the related road section, the control means does not deviate from the guidance route and proceed to the related road section. A navigation device that does not terminate the navigation. The navigation device according to claim 1, 2, 3, or 4,
History means for collecting, when a guidance route is set, traveling histories of road sections around the destination of the guidance route in association with the destination;
Based on the history, a road section selected by the user from a road section around a destination that has previously traveled at a frequency equal to or higher than a predetermined frequency, or a road section around a destination that has run at a frequency equal to or higher than a predetermined frequency in the past. A navigation apparatus, comprising: a related road section setting unit that sets a section as the related road section with respect to a destination associated with the history. The navigation device according to claim 1 or 2,
When the current position deviates from the guidance route, the vehicle further includes a guidance route resetting unit that resets a guidance route from the current position to the destination,
The route guidance means includes a normal mode route guidance that is a route guidance by a screen representing a current position and a guidance route on a map, and a route guidance by voice and a route guidance by displaying an intersection guide map at a position before the intersection. At least one of the detailed mode route guidance,
The control means causes the route guidance means to stop the detailed mode route guidance when the current position advances to a related road section which is a preset road section around the destination with respect to the destination. A navigation device that simplifies the mode of the route guidance performed thereafter. A navigation device that sets a guidance route to a destination and performs route guidance for guiding a user's traveling along the set guidance route, a method of controlling the mode of the route guidance,
Detecting, for the destination, that the current position has advanced to a related road section which is a preset road section around the destination;
A step of simplifying the subsequent mode of the route guidance when the current position has advanced to the related road section. A navigation device that sets a guidance route to a destination and performs route guidance for guiding a user's traveling along the set guidance route, a method of controlling the end of the route guidance,
A step of detecting that the current position has advanced to a related road section which is a road section around the destination which has been set in advance for the destination and which has been driven at a frequency equal to or higher than a predetermined frequency in the past;
Ending the route guidance when the current position has advanced to the related road section, the route guidance ending control method in the navigation device.

Images