JP3921116B2 - Navigation device and learning support method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a navigation device that provides route guidance to a user.
[0002]
[Prior art]
Conventional route guidance technologies for navigation devices include a technology that displays a navigation screen that displays a guide route set between the current position, destination, and destination on a map, and a road that is driven by turning left or right. There is known a technique for guiding a user to the direction of a right / left turn, the characteristics of an intersection that makes a right / left turn, or the like by voice or a display graphic before the intersection where the change is made.
[0003]
According to the route guidance technology in these navigation devices, the user can reach the destination without hesitation without referring to the road map book or the like even on an unknown land or the like.
[0004]
[Problems to be solved by the invention]
Now, the route guidance technique in the navigation device is useful and convenient as a technique for performing route guidance. However, as always, such a technique may cause excessive dependence on the user. In other words, the user may rely on the route guidance of the navigation device to make a decision such as turning left or right, and the user may not be able to remember the route or route. In such a case, the user sees the navigation screen every time the vehicle travels even on a road that has been passed many times, but this is not necessarily preferable for the user. In addition, if the route guidance of an appropriate navigation device cannot be used for some reason, it may be lost.
[0005]
Then, this invention makes it a subject to provide the navigation apparatus which can assist a user learning a route and a route.
[0006]
[Means for Solving the Problems]
  In order to achieve the above object, the present invention provides, for example, a history storage means for storing a travel history of the vehicle in a navigation device that guides the travel of the user by the vehicle,When the vehicle stops or passes through to change the driving road at the intersectionPresenting means for presenting the user with travel guidance information about a road or intersection that has traveled immediately before being obtained from the history stored in the history storage means, orWhen the vehicle stops or passes through to change the driving road at the intersectionPresenting means for presenting to the user the characteristics of the road that was traveled immediately before or obtained from the history stored in the history storage means, or the characteristics of the intersection that was traveled immediately before, It is equipped with.The presentation to the user by the presenting means is preferably performed via voice when this is performed during traveling.
[0008]
According to the navigation device as described above, the user can repeatedly learn the road or intersection that has traveled immediately before by presenting the user with information about the road or intersection that has traveled immediately before and information about the surrounding area. Will be able to.
In addition, as a more specific form of such a navigation device, the present invention is a navigation device that guides driving by a user's vehicle by displaying a navigation screen showing a current position on a map, for example, Passage detecting means for detecting a passage that changes the traveling road of the intersection, and when the passage detecting means detects a passage that changes the traveling road of the intersection, the current traveling road from the intersection that detected the passage that changed the traveling road last time The voice of the characteristics of the road or the facility around the road that was traveled until the intersection where the passage was detected, or the feature of the intersection or the facility around the intersection that detected the passage that changed the traveling road this time A navigation device comprising a presenting means, a stop detection means for detecting a stop of the vehicle, and the stop detection means A navigation device comprising a presenting means for presenting guidance information for guiding a facility around the road that has just traveled when both stops are detected, a stop detection means for detecting a stop of the vehicle, and the stop detection means When the vehicle stops, the virtual current position is generated on the map and displayed on the map at each time point while proceeding on the road where the virtual current position has traveled immediately toward the current position. A navigation device provided with a presentation unit is provided.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described.
Hereinafter, an embodiment of the present invention will be described taking application to an in-vehicle navigation device mounted and used in an automobile as an example.
First, the first embodiment will be described.
FIG. 1 shows the configuration of the navigation apparatus according to the first embodiment.
As shown in the figure, the navigation device includes a control device 1, a storage media drive 2 for accessing a removable storage medium 21 such as a DVD-ROM or CD-ROM storing map data, and a GPS (Global Positioning System) reception. Machine 3, an angular acceleration sensor 4 such as a gyro device, a vehicle speed sensor 5 such as a pulse generator, a speaker 6, a remote controller (remote controller) 7 for receiving input from a user, and a display device 8.
[0010]
In addition, the control device 1 includes a map data buffer 101, a map data read processing unit 102, a stop determination unit 103, a temporary current position / orientation calculation unit 104, a map matching processing unit 105, a route search unit 106, a route drawing unit 107, a map A drawing unit 109, a voice output device 110, a learning voice data memory 111, a parameter memory 112, a main control unit 113, an image synthesis processing unit 114, and a GUI control unit 115 are provided. Here, a dotted line 121 inside the control device 1 in FIG. 1 indicates an access path of each part to the map data stored in the map data buffer 101, and a thick line 122 indicates a path of control information between the main control part 113 and each part. A white line 123 indicates an access path of each part to various data stored in the parameter memory 112, and a thin line connected to the GUI control unit 115 and the image composition processing unit 114 indicates a path of display information to the display device 8. Show. A one-dot chain line connected to the GUI control unit 115 represents information for accepting designation of a drawing object by the main control unit 113 by operating the remote controller 7 on the display of the display device 8, and is connected to the GUI control unit 115. A thin broken line indicates a path of information for accepting other remote control operations in the main control unit 113.
[0011]
However, the control device 1 described above may be a CPU circuit having a general configuration including peripheral devices such as a microprocessor, a memory, and other graphic processors and geometric processors in terms of hardware. In this case, each unit of the control device 1 described above may be realized as a process embodied by a microprocessor executing a program prepared in advance. In this case, such a program may be a person provided to the control device 1 via the storage medium 21 or a communication path.
[0012]
Next, the structure of the map data stored in the storage medium 21 is shown.
Here, the map data is managed in units called leaflets for each predetermined geographical area, and each leaf is composed of a plurality of levels according to the degree of detail of the map. Each level map of each leaf consists of one or a plurality of units, and each unit corresponds to the geographical area of the leaf to which it belongs or a divided area, and maps the corresponding area to itself. It is expressed at the level to which the belongs.
[0013]
As shown in FIG. 2, the map data is represented by management data describing the relationship between each unit and a map leaf, corresponding area, and level, basic map data representing a map, each road and each road and basic map data. And route data for managing the correspondence with the map.
[0014]
The route data has a route data record for each route, and each route data record has a route number, a route type indicating a route type such as an expressway, a national road, and a prefectural road, and a road name of the route. A road character string representing is described.
On the other hand, the basic map data includes unit data for each unit described above, and unit management data describing the relationship between each unit data and the leaf, corresponding area, and level. Each unit data includes a road unit representing a road network, , A drawing unit representing a background map image, which is a map image including display of topographical figure, facility figure, area name, facility name, etc., intersection unit storing information used for intersection driving guidance, and existence of various facilities And a landmark unit representing a landmark which is a mark figure for representing the symbol on the map.
[0015]
Next, the road unit has a node list, a link table, and connection data describing connections and correspondences of nodes and links with other units.
Here, in the road unit, the road is expressed 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 if the road is one-way between two adjacent nodes via the link, only one link in the direction of traffic is provided. In this case, two links opposite to each other are provided.
[0016]
The node list includes a node record for each node, and each node record is connected to a node attribute, a node attribute, a node attribute indicating whether the node is a node corresponding to an intersection, etc. The connection link number indicating the link number of the link to be written is described.
[0017]
The link table includes a link record for each link. Each link record includes a link attribute indicating the link number, the number of lanes, the node number 1 of the node that is the start point of the link, and the node that is the end point of the link. Node number 2, link distance, lane width of road section corresponding to link, number of lanes of road section corresponding to link, cost for route search given to link, route number of route to which link belongs, etc. are described. .
[0018]
Next, the intersection unit has an intersection data record provided for each intersection. Each intersection data record includes an intersection number which is an identification number of the intersection, a node number of a node corresponding to the intersection, and a link connected to the intersection. Number, name of intersection, landmark landmark information, traffic signal information indicating presence / absence of traffic signal at intersection, and passage guidance information. The landmark landmark information and passage guidance information are provided for each link connected to the intersection, and the landmark landmark information is information on the facility that becomes the landmark when entering the intersection from the corresponding link and its position. The passing guidance information is information for guiding traveling when passing through the intersection such as the shape of the intersection viewed from the side entering the intersection from the corresponding link and the turning direction of the vehicle advancing to each link. That is, for example, in the landmark landmark information, information indicating that a gas station on the right-hand corner exists as a landmark when moving from a corresponding link to a link connected to the right is stored, and in the passage guidance information Information such as the detailed shape of the intersection and the fact that the vehicle should travel diagonally to the right when entering from a corresponding link and proceeding to another link is stored.
[0019]
Next, the landmark unit has a landmark data record provided for each facility. Each landmark data record includes a landmark number which is an identification number of the facility, a gas station, a post office, a convenience store of the facility. Landmark type representing the type, mark figure shape representing the type of facility and display data representing the display position of the mark figure, landmark name representing the name of the facility, corresponding link number representing the link facing the facility, The position on the corresponding link that represents the distance from the link start point to the intersection of the perpendicular line and the link dropped from the center of the facility, facility guidance information that is detailed guidance text of the facility, and the like are stored.
[0020]
Next, parameters stored in the parameter memory 112 of the control device 1 in FIG. 1 will be described.
As shown in FIG. 3, the parameter memory 112 stores current state information 301, destination data 302, guide route data 303, and one or more passage history data 304.
The current state information 301 includes current position data 3011, current traveling direction data 3012, and traveling link data 3013. The current position data 3011 is data representing the current position coordinates of the vehicle. The traveling link data 3013 is data indicating the link number of the currently traveling link.
[0021]
The destination data 302 represents the coordinates of the destination on the link.
The guide route data 303 is data representing the guide route, and describes a route link list 3031 describing the link numbers of the links through which the guide route passes, and the node numbers of the nodes through which the guide route passes. A root node list 3032.
[0022]
Each passing history data 304 includes a starting intersection number 3041, an approach route name 3042, a current position distance 3043, a passing landmark list 3044, an end intersection number 3045, an end turning direction 3046, and an advancing route name 3047. The passing landmark list 3044 is a set of passing landmark data, and each passing landmark data includes a passing landmark number 30441, a start position distance 30442, and a presence side 30443.
[0023]
The contents of the parameter memory 112 have been described above.
Returning to FIG. 1, in such a configuration, the map data read processing unit 102 reads the required range of the map data from the storage medium 21 via the storage media drive 2 under the control of the main control unit 113. Store in the buffer 101.
Further, the temporary current position / orientation calculating unit 104 calculates the current position and the current traveling direction obtained from the history of each information of the angular acceleration sensor 4 and the vehicle speed sensor 5, and repeats the process of supplying to the map matching processing unit 105. The map matching processing unit 105 considers the current position supplied from the temporary current position / orientation calculating unit 104, the current travel direction, and the travel history obtained from the current position, the current position supplied from the GPS receiver 3, and the current travel. Match the direction, the travel history obtained from these, and the link represented by the road unit that corresponds to the area around the current position determined from the previous time read from the map data buffer 101, and on the most likely link as the current position The most probable link direction as the position and the current travel direction and the most probable link as the current travel link are determined as current position coordinates, current travel direction, and travel link, respectively, and the current position in the parameter memory 112 Data 3011, current traveling direction data 3012 and traveling link data 3013 are updated. Processing repeated.
[0024]
Then, the stop determination unit 103 determines that the vehicle has stopped if a period of zero vehicle speed continues for more than a predetermined time (for example, 10 seconds) from the output of the vehicle speed sensor 5, and notifies the main control unit 113 of the stop. .
The main control unit 113 determines the azimuth corresponding to the traveling azimuth indicated by the traveling azimuth data as the display azimuth, determines the scale according to user settings or initial settings made in advance, and reads the current position read from the current position data 3011 A predetermined range determined in accordance with the determined display orientation, the determined scale and the operation mode in the periphery is determined as the display range. Here, for example, the display orientation is calculated so that the traveling orientation is always upward. Then, the road unit, the drawing unit, and the landmark unit in the display range are read to the map drawing unit 109, and based on this, the road unit is displayed on the background map image represented by the drawing unit with the direction indicated by the display direction data as the top. A map image in which the road graphic of the road network represented by and the mark graphic of each facility represented by the landmark unit is drawn is generated. Then, the image composition processing unit 114 draws a current position mark facing the direction corresponding to the direction indicated by the current traveling direction data 3012 on the background image at the position corresponding to the current position indicated by the current position data 3011. A map image is completed and generated on the display device 8 via the GUI control unit 115.
[0025]
When the main control unit 113 receives a destination setting from the user via the remote controller 7 and the GUI control unit 115, the main control unit 113 sets the destination data 302 and causes the route search unit 106 to search for a guidance route. The route search unit 106 reads the road data of the road unit in the necessary geographical area from the map data buffer 101, and from the current position coordinates indicated by the current position data 3011 of the parameter memory 112 to the destination coordinates indicated by the destination data 302. A guide route that first follows the link indicated by the running link data 3013 is calculated based on a predetermined cost model, and the calculated route data of the guide route is stored in the route link list 3031 and the route node list 3032 of the guide route data 303. Store each one. When the guide route is calculated, the main control unit 113 causes the route drawing unit 107 to set the azimuth indicated by the display azimuth data as the top and the destination from the current position in the display range based on the guide route data 303. A route image in which the guide route graphic on the side is drawn is generated, and the image composition processing unit 114 synthesizes this route image on the above-described peripheral map image to generate a navigation image, and via the GUI control unit 115, Instead of the surrounding map image, the display device 8 generates the map.
[0026]
In such a navigation device, the main control unit 113 further performs a learning support process.
FIG. 4a shows the procedure of the learning support process.
As shown in the figure, in the learning support process, first, new passage history data 304 is created in the parameter memory 112 (step 402). Then, the current state information 301 waits for the occurrence of a change in the traveling road (right turn, left turn, etc.) at the intersection of the vehicles (step 404). In addition, the change of the traveling road is performed by referring to the change of the route to which the link indicated by the running link data 3013 obtained by referring to the route data and the node of the changing point of the route obtained by referring to the node attribute is an intersection. It can be obtained more.
[0027]
Then, if the travel road changes at the intersection of the vehicle, the intersection number of the intersection where the travel road has changed is obtained with reference to the intersection unit, and set to the start intersection number 3041 of the passage history data 304 ( Step 406), the route name of the travel road after the change is set in the approach route name 3042 of the passage history data 304 (step 408). Then, the current position distance 3043 is updated to the distance from the intersection of the starting intersection number 3041 (step 410).
[0028]
Next, whether or not the vehicle current position has passed before the landmark has occurred is monitored by referring to the corresponding link number of the landmark data record of the landmark unit and the position on the corresponding link based on the current state information 301. (Step 412), if not, the process proceeds to Step 416. On the other hand, if the vehicle has passed before the landmark, the passing landmark data is added to the passing landmark list 3044 (step 414). Here, in the added landmark data, the landmark number of the passing landmark is set as the passing landmark number 30441, and the distance from the intersection of the starting intersection number 3041 to the position on the corresponding link of the corresponding link of the passed landmark. Is set as the existence side 30443 with reference to the display position of the display data of the landmark data record to determine whether the landmark that has passed is on the left or right side of the vehicle. Then, the process proceeds to step 416.
[0029]
In step 416, it is checked again whether or not the traveling road has changed at the intersection of the vehicles. If not, the process returns to step 410 and the above processing is repeated.
On the other hand, if there is a change in the driving road at the vehicle intersection in step 416, the intersection number of the intersection that has passed is set as the end intersection number 3045 in the passage history data 304, and the intersection passage of the link after passing the intersection is passed. The relative direction with respect to the previous link is set as the end turning direction 3046, and the changed route name is set as the advancing route name 3047 (step 418). Then, new passage history data 304 is created (step 420), the iterative learning process is started (step 422), and the process returns to step 408.
[0030]
Note that the process of setting the passage history data 304 in steps 406 to 418 is always performed on the latest passage history data 304.
As a result of the above processing, when the travel road is changed at the intersection, information on the intersection that changed the previous travel road and the intersection that changed the current travel road, and the intersection that changed the current travel road from the intersection that changed the previous travel road The information on the landmarks that have passed in the past and the distance between them are collected in the passing landmark list 3044.
[0031]
FIG. 4 b shows the procedure of the iterative learning process started at step 422.
As shown in the figure, in the iterative learning process, first, it is determined whether or not the intersection is completely passed, for example, based on whether the distance to the intersection node is a predetermined distance or more (step 452). If the vehicle has passed, the text for allowing the user to remember the path from the intersection where the previous travel road was changed to the intersection where the current travel road was changed from the previous passage history data 304 before the latest passage history data 304 Or, learning voice data representing a sentence for memorizing the intersection where the traveling road is changed is created, set in the learning voice data memory 111 (step 454), and the voice output device 110 is instructed to output the voice ( Step 456), the process ends.
[0032]
When the voice output device 110 is instructed to output the voice, the voice output device 110 generates a synthesized voice or the like that reads the learning voice data set in the learning voice memory, and outputs it from the speaker 6.
Here, as the learning voice data, for example, the distance from the intersection where the previous travel road indicated by the current position distance 3043 is changed to the intersection where the current travel road is changed, the passage landmark data in the passage landmark list 3044 has passed. The landmark type and name of the landmark, the information on the distance from the intersection where the previous traveling road was changed, the landmark information on the intersection where the current traveling road was changed obtained from the intersection data record indicated by the end intersection number 3045, and the end intersection number 3045 The presence / absence of traffic signals at the intersection where the current travel road has been changed obtained from the intersection data record, the number of branches at the intersection where the current travel road has been obtained from the intersection data record indicated by the end intersection number 3045 (square, Y-junction, etc.), and the end intersection number It is obtained from the intersection data record indicated by 3045 The intersection name of the intersection where the traveling road has been changed, the intersection name of the intersection where the previous traveling road was obtained from the intersection data record indicated by the starting intersection number 3041, and the traveling route name before changing the current traveling road indicated by the approach route name 3042 , A sentence that indicates the traveling route name after changing the current traveling road indicated by the advancing route name 3047, the turning direction (right turn, left turn, etc.) at the intersection where the current traveling road is changed obtained from the end turning direction 3046, alone or They can be used in appropriate combinations.
[0033]
For example, as shown in FIG. 5, if you turn left at intersection A and drive on National Highway No. 4, turn right at intersection B and proceed to Prefectural Road No. 49. As for, “Turn 10km from XX intersection (name of intersection A) and turn right.” “Turn right from national highway 4 to prefectural road 49 at XX intersection (intersection B name).” “To 5km The post office was 8 km away from the hospital. ”,“ Turn right at the four corners with traffic lights. ”,“ Turn right at the intersection with the gas station on the right corner. ”,“ XX intersection (intersection B name) You can use "The post office on the left side, the hospital with the hospital on the right side, and the right school corner on the right side."
[0034]
In the above processing, new passage history data 304 is sequentially created and accumulated, but this may be deleted from the speech output of the corresponding learning speech data. Good.
The first embodiment of the present invention has been described above.
As described above, according to the first embodiment, when the course is changed at the intersection, the road traveled immediately before by presenting the user with the information about the road and the intersection that traveled immediately before and the surrounding area is presented to the user. And it becomes possible to repeatedly learn intersections.
[0035]
Hereinafter, a second embodiment of the present invention will be described.
The navigation device according to the second embodiment is obtained by modifying the learning support process and the contents of the parameter memory 112 of the navigation device of the first embodiment as follows.
That is, as shown in FIG. 6, in the second embodiment, in the parameter memory 112, in addition to the current state information 301, the destination data 302, the guide route data 303, a passing landmark list 3044 which is a list of passing landmark numbers 30441. Is stored.
[0036]
Then, the learning support process is performed according to the procedure shown in FIG. That is, it is monitored by referring to the corresponding link number of the landmark data record of the landmark unit and the position on the corresponding link based on the current state information 301 whether or not the vehicle current position has passed before the important landmark. (Step 702),If a pass in front of an important landmark occursThen, the process of adding the landmark number of the passing landmark as the passing landmark number 30441 to the passing landmark list 3044 (step 704) is repeated. If the stop determination unit 103 detects a stop (step 706), the iterative learning process is activated (step 708). Here, an important landmark is a landmark that has been set in advance as an important landmark. For example, by setting a specific landmark type as an important landmark or setting the landmark type including the importance level as needed, From the landmark data record, it can be determined whether or not the landmark represented by the landmark data record is an important landmark.
[0037]
Now, in the iterative learning process started in step 708, as shown in FIG. 7b, it is checked whether or not the passing landmark number 30441 is registered in the passing landmark list 3044 (step 752). If it is not registered, the process is terminated as it is. On the other hand, if registered, first, each landmark data record indicated by the passing landmark number 30441 in the passing landmark list 3044 is collected, and a range including a position corresponding to the display position of each landmark is included. Is set as a learning map range (step 754). Next, a learning map is generated, and a learning map window representing the learning map is displayed on the display device 8 via the GUI control unit 115 (step 756). Here, the learning map is a map that emphasizes important landmarks. For example, a road unit, a drawing unit, and a landmark unit in the display range are read out to the map drawing unit 109 and displayed based on this. The road figure of the road network represented by the road unit is synthesized on the background map image represented by the drawing unit with the azimuth indicated by the azimuth data as the top, and further, among the mark figures of each facility represented by the landmark unit on the map. The image is generated by generating an image in which only the mark figure of the important landmark is drawn, for example, with a size twice as large as that of the normal landmark, and then drawing the current position mark on the map image on the map image. .
[0038]
Next, the main control unit 113 sets important landmark learning voice data for the landmark of each passing landmark number 30441 registered in the passing landmark list 3044 in the learning voice data memory 111 (step 758). ). As the important landmark learning voice data, the sentence of the facility guidance information of the landmark data record indicated by the passing landmark number 30441 is set. Then, the main control unit 113 instructs the audio output device 110 to output the important landmark learning audio data (step 766). When the audio output is completed, the main landmark learning audio data for which the audio output has been completed is used. (Step 768) The process of deleting is sequentially performed from the one corresponding to the passing landmark number 30441 registered earlier (steps 760, 770, 772). Then, whether the sound output of the important landmark learning sound data for all the passing landmark numbers 30441 is finished (step 770) or if the stop determination unit 103 detects the start of the vehicle (step 764), the sound output is performed. It stops, the learning map window displayed on the display device 8 is closed (step 774), and the process is terminated.
[0039]
As a result, for example, when landmarks and historic sites are set as important landmarks, as shown in FIG. 8a, after passing through the XX tower as a landmark and the XX temple as a landmark, As shown in FIG. 8b, a learning map window 802 that displays a learning map in which a figure 804 representing the XX tower and a figure 803 representing the XX temple are drawn is displayed. “XX tower, height XXmm constructed in XXX year” Details of landmark data records that represent XX Tower and XX Temple, such as “Radio Tower” and “XX Temple, Zen Temple of XX Buddhist Temple built by XX superiors in XX”. A guidance voice that reads a sentence preset in the guidance information is output.
[0040]
In the example of FIG. 8B, the display area of the display device 8 is divided in the horizontal direction, the learning map window 802 is displayed on the right side, and the navigation image (or surrounding map image) 801 is displayed on the left side. Shows about. Here, when taking such a display form, the navigation image (or the surrounding map image) 801 may be used for the entire display device when the learning map window 802 is not displayed.
[0041]
The second embodiment of the present invention has been described above.
  As aboveNaAccording to the second embodiment, when the vehicle is stopped, the road that has traveled immediately before is presented to the user by presenting an explanation of important landmarks around the road that has traveled immediately before to the user.Can promote memoryAt the same time, the user can deepen familiarity with the surrounding area.
[0042]
Hereinafter, a third embodiment of the present invention will be described.
The navigation device according to the third embodiment is obtained by modifying the learning support process and the contents of the parameter memory 112 of the navigation device of the first embodiment as follows.
That is, as shown in FIG. 9, in the second embodiment, in addition to the current state information 301, the destination data 302, and the guide route data 303, the passage route data 901 and the virtual current state information 902 are stored in the parameter memory 112. . The passing route data 901 includes a passing link list 9011 that is a list of link numbers of links that have passed in the past, and a passing node list 9012 that is a list of node numbers of nodes that have passed in the past. The virtual current state information 902 includes virtual current position data 9021, virtual current traveling direction data 9022, and virtual traveling link data 9023.
[0043]
Then, the learning support process is performed according to the procedure shown in FIG.
That is, when the process is started, the main control unit 113, every time a vehicle node or link passes (step 1002), the node number of the passed node is entered in the passing node list 9012, and the link number of the passed link is entered in the passing link list. The process added to 9011 (step 1004) is repeated. If the stop determination unit 103 detects a stop (step 1006), it starts an iterative learning process (step 1008).
[0044]
Now, in the iterative learning process started in step 1008, as shown in FIG. 10b, first, a learning start point is determined (step 1502). The learning start point is a passing node list 9012 among nodes whose node numbers are registered at the head of the passing list and whose distance from the current position indicated by the current position data 3011 to that node is smaller than a predetermined threshold. The time registered in is the earliest node.
[0045]
Then, the coordinates of the node as the learning start point are set in the virtual current position data 9021, the link starting from the set node is set in the virtual running link data 9023, and the link from the starting point of the link as the virtual running link is reached. The heading toward is set in the virtual travel heading data (step 1504).
[0046]
Then, a timer is set (step 1506), an iterative learning image is generated, and an iterative learning image window representing the iterative learning image is displayed on the display device 8 via the GUI control unit 115 (step 1508). Here, the iterative learning image means that the map drawing unit 109 regards the virtual current state information 902 as the current state information 301, and combines the image on the map image drawn in the same manner as when generating the surrounding map image. This is an image generated by the processing unit 114 by combining a passage route graphic indicating the route portion on the current position side with respect to the virtual current position of the route indicated by the passage route data 901 and a mark indicating the virtual current position.
[0047]
Thereafter, if the timer times out (step 1514), the main control unit 113 advances the virtual current position data 9021 by a predetermined distance in the direction of the current position on the route indicated by the passage route data 901 (step 1516), and proceeds to step 1506. Returning, the timer is reset, and the iterative learning image is updated (step 1508).
[0048]
Further, the main control unit 113 determines whether the stop determination unit 103 detects the start of the vehicle during the repetitive learning image update (step 1510), or the position indicated by the virtual current position data 9021 is indicated by the current position data 3011. If the current position has been reached (step 1512), the node corresponding to the previous part on the path indicated by the passing path data 901 from the position indicated by the virtual current position data 9021 at that time and the number of the link are passed through the passing node list 9012. The iterative learning image window that has been deleted from the link list 9011 and displayed on the display device 8 is closed (step 15180, and the process ends).
[0049]
As a result, when starting from point A as shown in FIG. 11a and stopping at point B, an iterative learning window 1102 representing an iterative learning image for guiding the route from point A to point B is displayed as shown in FIG. 11b. It will be. In addition, the iterative learning image is an image in which a mark 1103 representing a virtual current position indicated by the virtual current position data 9021 and a route graphic 1104 representing a passing route are drawn on a map in a predetermined range with the virtual current position as a reference position. It becomes. In addition, this repeated image is updated so that the virtual current position gradually progresses on the passage route toward the current position as time passes. The illustrated example shows an iterative learning image displayed when the virtual current position has advanced to a position before the post office.
[0050]
This iterative learning image is displayed when the user travels from point A to point B while receiving guidance according to the guidance route set so as to pass through point A and point B. It will be similar to the image.
In the example of FIG. 11b, the display area of the display device 8 is divided in the horizontal direction, the iterative learning window 1102 is displayed on the right side, and the navigation image (or surrounding map image) 1101 is displayed on the left side. Show. Here, when taking such a display form, the navigation image (or surrounding map image) 1101 may use the entire display device for the display when the iterative learning window 1102 is not displayed.
[0051]
Heretofore, the third embodiment of the present invention has been described.
As described above, according to the third embodiment, when the vehicle is stopped, the road that has just traveled immediately before is displayed on the road map by displaying on the road map that the vehicle traveled just before. Can be iteratively learned.
The embodiment of the present invention has been described above.
In the above embodiment, the above learning support processing may be performed only when guidance according to the guidance route is performed. In this case, in the third embodiment, the navigation image displayed when the vehicle travels immediately before may be displayed again instead of the repeated learning image when the vehicle is stopped.
[0052]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a navigation device that can assist a user to learn a route or a route.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a navigation device according to an embodiment of the present invention.
FIG. 2 is a diagram showing the contents of map data according to the embodiment of the present invention.
FIG. 3 is a diagram showing the contents of a parameter memory of the navigation device according to the first embodiment of the invention.
FIG. 4 is a flowchart illustrating a procedure of learning support processing performed by the main control unit according to the first embodiment of the present invention.
FIG. 5 is a diagram illustrating an operation of a learning support process according to the first embodiment of this invention.
FIG. 6 is a diagram showing the contents of a parameter memory of the navigation device according to the second embodiment of the invention.
FIG. 7 is a flowchart showing a procedure of learning support processing performed by a main control unit according to the second embodiment of the present invention.
FIG. 8 is a diagram showing an operation of a learning support process according to the second embodiment of the present invention.
FIG. 9 is a diagram showing the contents of a parameter memory of a navigation device according to a third embodiment of the invention.
FIG. 10 is a flowchart illustrating a procedure of learning support processing performed by a main control unit according to a third embodiment of the present invention.
FIG. 11 is a diagram showing an operation of a learning support process according to the third embodiment of the present invention.
[Explanation of symbols]
1: control device, 2: storage media drive, 3: GPS receiver, 4: angular acceleration sensor, 5: vehicle speed sensor, 6: speaker, 7: remote control, 8: display device, 21: storage medium, 101: map data Buffer: 102: Map data read processing unit, 103: Stop determination unit, 104: Temporary current position / orientation calculation unit, 105: Map matching processing unit, 106: Route search unit, 107: Route drawing unit, 109: Map drawing unit , 110: voice output device, 111: learning voice data memory, 112: parameter memory, 113: main control unit, 114: image synthesis processing unit, 115: GUI control unit.

Claims (7)

A navigation device mounted on a vehicle,
History storage means for storing a history of travel of the vehicle;
The vehicle is stopped, or when the passage to change the intersection traveling road, and presenting means for presenting a travel guidance information about the traveling road or intersection just before determined from history stored in said history storage means to the user A navigation device comprising: A navigation device mounted on a vehicle,
History storage means for storing a history of travel of the vehicle;
When the vehicle stops or passes through to change the driving road of the intersection, the road has traveled immediately before it is obtained from the history stored in the history storage means or the characteristics of the intersection that has traveled immediately before, or has traveled immediately before A navigation device comprising presentation means for presenting a user with features around a road or around an intersection that has traveled immediately before. The navigation device according to claim 1 or 2 ,
The navigation device characterized in that the presentation to the user by the presenting means is performed via voice. A navigation device that guides driving of a user's vehicle by displaying a navigation screen showing a current position on a map,
A passage detection means for detecting a passage that changes the traveling road of the intersection;
When the passage detection means detects a passage that has changed the traveling road of the intersection, the road that traveled between the intersection that changed the previous traveling road and the intersection that changed the current traveling road or the characteristics of the facility around the road, or A navigation apparatus comprising: a presenting means for presenting to a user by voice a feature of an intersection where the traveling road has been changed this time or a facility around the intersection . A navigation device that guides driving of a user's vehicle by displaying a navigation screen showing a current position on a map,
Stop detection means for detecting stop of the vehicle;
A navigation apparatus, comprising: presentation means for presenting guidance information for guiding a facility around a road that has traveled immediately before when the stop detection means detects a stop of the vehicle. A navigation device that guides driving of a user's vehicle by displaying a navigation screen showing a current position on a map,
Stop detection means for detecting stop of the vehicle;
When the stop detection means detects the stop of the vehicle, while repeating the virtual current position on the road that has just traveled toward the current position, a repetitive screen showing the virtual current position on the map at each time point is displayed. A navigation device comprising: presenting means for generating and displaying. In a vehicle-mounted navigation device, a learning support method for supporting learning of a user's route or route,
Storing a history of travel of the vehicle;
When the vehicle stops or passes through to change the driving road of an intersection, the characteristics of the road that has been run immediately before or obtained from the stored history or the characteristics of the intersection that has been run immediately before, And a step of presenting to the user the characteristics around the intersection that has traveled.

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