JP2006064563A - Navigation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform route search of a road having a merit to a user by utilizing sufficiently information acquired from traveling in the past, and to prevent deviation at a spot where deviation from the route occurs frequently. <P>SOLUTION: When deviation occurs by mistake during traveling a searched-for route, the pertinent crossing is stored. When the spot exists on a route searched for at the next time, leading/guidance is performed at the spot. In addition, leading/guidance is also performed at a crossing having a similar shape to the spot where deviation occurs. When a recommended route acquired by route search is different from a route traveled actually by the user, a scheduled required time is compared with an actual traveling time relative to a different part. If the required time of the actually traveled route is shorter, the actually traveled route part is learned, and the learned route is reflected on the next-time route search. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a navigation device, and more particularly to a route guidance technique for a car navigation device.

  Conventionally, in a car navigation system, there is a technique for learning past driving and using it for next navigation. For example, Patent Document 1 discloses a technique for learning the driving tendency of a user by recording the number of times of travel and the distance traveled for each road type, and performing a route search by giving priority to a road type whose use frequency is within a predetermined range. Is described. Also, in Patent Document 2, a departure point from the searched route is recorded, and when trying to pass the point again, the route may be rerouted before the departure because there is a possibility of route departure when approaching the point. A technique for performing a search is described.

JP 2003-57054 A JP2003-232645A

  However, it cannot be said that the technique of the above-mentioned patent document performs route guidance by making full use of past travel information. For example, in the technique of Patent Document 1, it is not evaluated whether a learned road is a user's favorite road or a road that is beneficial to the user, and an unfavorable road is learned. There is. Further, in the technique of Patent Document 2, when there is a possibility of deviating from the route, no countermeasure is taken to prevent the route from deviating.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a technique for appropriately utilizing information obtained from past travel for the next route guidance. For example, it is to provide a technique for learning roads that are beneficial to the user. It is another object of the present invention to provide a technique for preventing the route from being deviated when there is a possibility of deviating from the route.

  In order to solve the above problems, the navigation device of the present invention provides guidance for preventing departure at points that have deviated in the past. Further, when learning the past travel history, it is compared with the route searched in advance, and is learned only when it is advantageous (for example, when the required time is short).

  For example, the navigation device of the present invention includes a departure point storage unit that stores a point that deviates from the searched route, a route search unit that searches for a route, and the departure point on the route searched by the route search unit. When there is a point stored in the storage unit, the navigation unit includes guidance unit for performing guidance for preventing the departure from the route at the point.

  In addition, the navigation device of the present invention includes a learning unit that learns a route actually traveled when the route actually traveled is more advantageous in terms of required time or distance than the route searched in advance, and the learning unit Route search means for searching for a route from the departure place to the destination using information on the learned route;

  An embodiment of a navigation system using the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing the configuration of an in-vehicle navigation system using the present invention. This system includes a navigation processing device 10, a microphone 20, a speaker 30, a display device 40 with a touch panel, a positioning device 50, a communication device 60, a traffic information receiving unit 70, a hard disk device 80, and an input device 90.

  The navigation processing apparatus 10 performs processing necessary for navigation such as positioning of the vehicle position, setting of a destination, route search, guidance, and map display, and includes the following parts. The voice control unit 101 performs voice output processing for outputting voice guidance for guidance to the speaker 30 and voice recognition processing for recognizing voice input from the microphone 20. The screen control unit 102 receives a process for displaying a map, a guidance screen, various menus, and the like of the map data 802 on the display device 40 and an input from the touch panel of the display device 40, and determines which position on the screen the user ( A process for determining whether or not (not shown) is pointed is performed. The destination search unit 103 performs menu display control for the user to set a destination or a stopover point. The destination is searched from point information 801 stored in the hard disk device 80.

  The route search unit 104 searches for a route to the current position and the destination determined by the destination search unit 103. In route search, the user can specify search conditions. For example, conditions such as highway priority, national road priority, and distance priority. A search for a plurality of routes can also be specified as a search condition. When this designation is made, a plurality of routes are searched according to the plurality of conditions described above, and the results are selected by the user.

  The guidance information generation unit 105 generates information for guiding the vehicle to the route searched by the route search unit 104. For example, the guidance information generation unit 105 generates information on an intersection to be turned.

  The locator 106 receives a signal from the positioning device 50 and measures the current position of the vehicle, and specifies the position on the map.

  The guidance unit 111 guides the vehicle based on the guidance information generated by the guidance information generation unit 105 and the current position measured by the locator 106 when the vehicle travels. When the vehicle approaches the intersection to be guided, an enlarged view of the intersection and the bending direction are displayed on the display device 40, and the bending direction is announced from the speaker 30 by voice.

  The travel history storage unit 107 stores information related to the route traveled by the vehicle in the hard disk device 80 as a travel history 840.

  The learning unit 108 learns points that are likely to deviate from the route from the travel history 840 accumulated by the travel history accumulation unit 107, or learns a user's favorite route.

  The traffic information processing unit 109 identifies a road that is congested based on the traffic information received by the traffic information reception unit 70 and displays the road on the map on the display device 40, or the route search unit 104 selects a route that avoids the traffic jam. Generate information for calculation.

  The calendar / clock unit 110 calculates the current year, month, day, day of the week, and time. It is also used to measure the actual time required for route travel.

  The positioning device 50 includes a gyro 501 that detects the moving direction of the vehicle, a vehicle speed sensor 502 that calculates the moving distance of the vehicle, and a GPS receiver 503 that receives a signal from an artificial satellite and identifies the current position. .

  The communication device 60 is connected to an information center (not shown) that distributes traffic information via a network and receives the traffic information.

  The traffic information receiving unit 70 receives traffic information transmitted from broadcasts, optical beacons, radio beacons and the like.

  The hard disk device 80 stores information necessary for processing of the navigation processing device 10, and learns routes generated from point information 810, map data 820, travel history 830, and past travel history used when searching for a destination. Information 850, route departure point information 860 regarding a point that deviates from the route, and the like are stored. The map data 820 is road data on the map, and includes link information 821, guided intersection information 822, and the like.

  FIG. 2 is a diagram showing the configuration of the link information 821 included in the map data 820. As shown in FIG. The link information 821 is information used when the route search unit 104 performs route search. The link information 821 includes an identification code (link ID) 8211 of a link constituting the road on the map, an identification code (node ID) 8212 of the start and end of the link, a link shape 8213, an intercity expressway, and an urban expressway. Road type 8214 such as national road, prefectural road, and general road, road width 8215, regulation information 8216 that is information related to traffic regulation such as one-way traffic, and road names 8217 such as national road / prefectural road numbers and expressway names .

  The link shape 8213 includes information on a rough shape of the link such as a link length and a curve size. The road type 8214 is used to calculate the travel time of the link. For example, it is used when determining a static travel time from a speed set to 80 km / h for a highway, 35 km / h for a national road, and the like.

  FIG. 3 is a diagram illustrating a configuration of the guidance intersection information 822 included in the map data 802. Guided intersection information 822 is information related to intersections that require guidance. If the route is a road, no guidance (guidance) is required. However, at an intersection to be bent, it is necessary to display an enlarged view of the intersection, lane information, the name of the intersection, the direction to be bent, the name of the direction to be bent, the presence / absence of a traffic light, etc. on the screen for guidance. Therefore, the guidance intersection information 822 includes a node ID 8221 of the intersection, an intersection name 8222, a direction name 8223 to be displayed on the display when guiding, lane information 8224 such as whether there is a right / left turn lane, T-shaped, cross Intersection type 8225 and the like.

  FIG. 4 is a diagram showing the configuration of the learned route information 850. The learned route information 850 includes information related to learned routes generated from past travel routes. As shown in the figure, the learned route information 850 includes a recommended route search condition 851 to be compared when the learned route is generated, a start node and an end node 852 of the learned route, and links constituting the learned route. Numeral 853, link ID 854 of the link from the start point node to the end point node, the start point passage time zone and the end point passage time zone 855, the required time 856, and the like. The start point passage time zone and the end point passage time zone 855 are time zones classified into days of the week and about one hour. This is because there are places where the required time varies greatly depending on the day of the week and the time zone. A process for generating the learned route information 850 will be described later.

  FIG. 5 is a diagram showing the configuration of route departure point information 860. The route departure point information 860 includes, for example, information about a point that easily deviates from the original route, as shown in FIG. In FIG. 10, links 931 and 932 are original recommended routes, and a link 933 is a link deviating from the recommended route. Here, 931 is called an entrance link, 932 is called an exit link, and 933 is called a departure link. In addition, an angle θ between the escape link 932 and the departure link 933 is referred to as a departure angle. As shown in FIG. 5, the route departure point information 860 includes latitude / longitude 8601, node ID 8602, entry link ID 8603, exit link ID 8604, departure link ID 8605, intersection shape 8606, departure angle 8607, and entry link road width 8608. , Exit link road width 8609, departure link road width 8610, and the like. The intersection shape 8606 is information such as the number of roads connected to the intersection. The generation process of the route departure point information 860 will be described later.

  [Description of Operation] Next, an outline of the operation of the navigation system configured as described above will be described.

  FIG. 6 is a flowchart showing the flow of processing of the navigation system of this embodiment. This flow is roughly divided into route search processing S100 to S106, guidance information generation processing S110, guidance processing S121 to S123, and learning processing S131 to S133. Each process will be described below. This flow is started when a route search request is made from the user via the input device 90.

  [Route Search Processing] First, the destination search unit 103 sets a destination and search conditions (S100). Specifically, the points in the point information 810 are displayed as a list on the display device 40 via the image control unit 102, and selection of a point to be set as a destination is received from the user. Further, the route search unit 104 receives a search condition from the user via the input device 90. In this embodiment, search conditions such as general road priority, expressway priority, and multiple route search can be set as search conditions. The route search unit 104 sets a search condition with the content specified via the input device 90 by the user.

  Next, the route search unit 104 searches for a route that minimizes the cost from the departure point (current position) to the destination under the designated search conditions by the Dijkstra method or the like (S101). The current position is obtained by the locator 106 from the output of the positioning device 50. The cost is determined based on information included in the map data 820 such as the shape (link length) 8213 and the road type 8214 for each link, and the set search conditions (distance priority, expressway priority, etc.). For example, when the search condition is highway priority, the route search unit 104 sets the cost of the highway link lower than the cost of other links, and performs route search so that the highway is easily selected. .

  Next, the route search unit 104 refers to the learned route information 850, and the start point and the end point node are on the route (hereinafter referred to as “initially searched route”) that matches the search condition 851 and is searched in S101. It is determined whether or not there is a learning route having the combination 852 (S102). If it does not exist (No in S102), the route search unit 104 determines the initially searched route as the recommended route. Then, the guidance information generation unit 105 is instructed to start the guidance information generation process S110.

  Here, it demonstrates using FIG. In FIG. 7, a thick solid line route 430 is an initial search route between the departure point 401 and the destination 402. A dashed route 420 is a learning route having a start node 411 and an end node 412. Both nodes 411 and 412 are assumed to be on the initially searched route 430. Further, it is assumed that the search condition 851 for the recommended route that is a comparison target when the learned route is generated matches the current search condition. In such a case, the route search unit 104 determines in S102 that a learned route exists.

  As shown in FIG. 7, when the learned route 420 exists (Yes in S <b> 102), the route search unit 104 calculates the expected passage time to the start point node 411 and the end point node 412. Specifically, the expected transit time is obtained by adding the required time of the links constituting the route to each of the nodes 411 and 412 to the departure time.

  Then, the route search unit 104 matches the time zone (eg, every hour) to which the calculated expected passage time belongs to the passage time zone 456 of the registered learning route start point and end point node (or the difference is within a predetermined range). (For example, within 2 hours) is determined (S103). This determination is made because the required time may vary depending on the day of the week and the time zone even in the same route.

  If the time zones do not match (No in S103), the route search unit 104 acquires traffic information between two nodes (the start point 411 and the end point 412 of the learned route 430) for the initially searched route 439 and the learned route 420. Here, it is assumed that the required time for the link is included in the traffic information. The route search unit 104 receives traffic information from an optical / radio wave beacon or FM multiplex broadcast via the traffic information receiving unit 70. Or it connects to a traffic information distribution center via the communication apparatus 60, and acquires the traffic information of an applicable area. Then, the route search unit 104 obtains the time required for the initial search route 430 between the start point 411 and the end point 412 using the acquired traffic information. Further, the time required for the learning route 420 is also obtained.

  Subsequently, the route search unit 104 compares the obtained required times. If the required time is shorter for the initially searched route 430 ((1) in S105), the initially searched route 430 is determined as the recommended route. Then, the guidance information generation unit 105 is instructed to start the guidance information generation process S110.

  On the other hand, when the required time is shorter for the learned route 420 ((2) in S105), the route search unit 104 replaces a part of the initially searched route 430 (between the start point 411 and the end point 412 of the learned route) with the learned route. . Then, the obtained route is determined as a recommended route. Next, the guidance information generation unit 105 is instructed to start the guidance information generation process S102.

  [Guidance Information Generation Processing] Next, the guidance information generation unit 105 generates guidance information of the searched recommended route in accordance with an instruction from the route search unit 104 (S110). Specifically, the guidance information generation unit 105 refers to the guidance intersection information 822 and extracts the node ID 8221 of the guidance intersection on the recommended route. Then, the extracted node ID 8221 of the guidance intersection is registered in the guidance information 840 as the guidance point 841. FIG. 8 is a diagram illustrating a configuration of the guidance information 840. As shown in the figure, in the guidance information 840, guidance points 841 are registered in order from the closest to the departure place.

  Further, the guidance information generation unit 105 refers to the route departure point information 860, and extracts the node ID 8602 of the point on the recommended route that has deviated in the past. Then, the node ID 8602 of the extracted departure point is registered in the guidance information 840 as the guidance point 841.

  Furthermore, the guidance information generation unit 105 extracts an intersection having a shape similar to a point on the recommended route and deviating in the past. Then, the extracted intersection is registered as the guidance point 841. It is determined whether the shape is similar to a point deviating in the past, such as an intersection shape 8606, a departure angle 8607, a road width 8608 of an entrance link, a road width 8609 of an exit link, a road width 8610 of a departure link, etc. Based on the characteristics of

  An example of extracting intersections (branch paths) similar to points that deviated in the past will be described. First, the guidance information generation unit 105 extracts an intersection that is on the recommended route and is not registered as the guidance intersection information 820, that is, an intersection that travels along a road. Then, with respect to the extracted intersection, a search is performed as to whether or not there is any of the intersection shape 8606, the departure angle 8607, and the road widths 8609 to 8610 of the point that has deviated in the past. More specifically, the intersection shape includes a Y-junction, a T-junction, etc., and the angle of the intersecting road is examined at a location where the intersection shape matches. Then, it is checked whether or not this intersection angle is equal to or less than the departure angle 8607 as compared with the departure angle 8607 of the route departure point information 860. If the departure angle is 8607 or less, next, the road width is examined. If the difference between the width of each road connected to the intersection and the road widths 8609 to 8610 of the route departure point information 860 is equal to or less than a predetermined value (for example, 2 m), the intersection is similar to a past departure point. It is determined that Note that. The comparison of the width of the road may be a comparison of levels such as a road without a center line or a one-lane road on one side, without comparing with strict numerical values.

  In this way, the spitting and guidance points 841 are extracted and registered in the guidance information 840.

  When the generation of the guidance information 840 ends, the guidance information generation unit 105 instructs the guidance unit 111 to start the guidance process.

  [Guiding process] Next, the guiding unit 111 starts guiding processes S121 to S124 in accordance with instructions from the guiding information generating unit 105 (S121). That is, the guidance unit 111 displays the current position obtained by the locator 106 on the display device 40 together with the recommended route, and outputs a guidance message when the guidance point is reached.

  FIG. 9 shows a display screen of the display device 40 during guidance. A thick solid line is a recommended route 930 between the departure point 901 and the destination 907. Reference numerals 902 to 906 are guidance points.

  The guidance unit 111 refers to the guidance information 840 and continues to monitor whether the current position has reached the guidance points 902 to 906 (or has approached within a predetermined distance (for example, within 50 m)). When the current position reaches the guidance points 902 to 906, the guidance unit 111 performs processing necessary for guidance based on a predetermined guidance method. For example, a message such as “50 m ahead, turn right” is displayed and voice is output via the display device 40 and the speaker 30.

  FIG. 12 is a display example of a guidance screen when a point deviating in the past is registered as a guidance point. As shown in the figure, when the car mark 040 representing the vehicle position approaches the guidance point 970, the guidance unit 111 displays an enlarged intersection view 980 as a guidance display on the right half of the screen 990. Further, information display 950 indicating the learned departure point such as “route departure attention point” and the remaining distance 960 to the intersection are displayed below the enlarged intersection view 980. In this way, the guidance unit 111 informs the driver that the point is likely to cause a departure and calls attention. Then guide you to the recommended route.

  Further, the guiding unit 111 monitors whether or not the current position has deviated from the recommended route during the guiding process (S122). And when it deviates (it is Yes at S122), it instructs the learning part 108 to perform deviation point learning process S123.

  Here, the deviation point learning process S123 will be described. FIG. 11 is a flowchart showing the flow of the departure point learning process S123.

  First, the learning unit 108 determines whether the vehicle deviates from the recommended route intentionally by the user or deviates due to a mistake (S200).

  FIG. 10 is an enlarged view of the vicinity of the point 911 that is easily deviated as shown in FIG. The recommended route 930 enters from the link 931 and exits from the link 932. When the approach link 931 and the exit link 932 are “roadways” such as when the same national road is used, this point is not set as a guide point such as 902 to 906. This is because if all intersections are used as guidance points, there is too much information for guidance and the user feels noisy. That is, the intersection along the road is not normally designated as a guidance point.

  However, if the departure link 933 exists on the extended straight line of the entry link 931 and the two road widths do not change much, the user travels from the entry link 431 to the departure link 433 by mistaken in the straight line direction. There is a possibility that. Therefore, when a route deviates due to a mistake, the point is learned and registered in the route departure point information 860 so as not to cause a mistake when passing the point next time.

  The learning unit 108 determines whether or not there is a mistake based on a running state such as vehicle wobble or sudden deceleration. That is, when the vehicle fluctuates or suddenly decelerates, it is considered that there is a problem, so it is determined that there is a mistake. Specifically, if the navigation system is provided with a steering angle sensor, and there is a predetermined number of changes in the steering angle within a predetermined time, and if there is a sudden deceleration exceeding the predetermined value, a mistake will occur. It is determined that In addition, if that is not enough, a keyword such as “wrong” uttered by the user is received from the microphone 20 and is recognized by the voice control unit 101 to determine whether or not it is a mistake. Can do. Further, after the route is deviated, a re-route search for returning to the original route is performed, and when the vehicle travels according to the searched route, it can be determined that the vehicle has deviated due to a mistake. On the other hand, when driving without returning to the original route, that is, when the current position of the vehicle is monitored within a predetermined time and the current position is not on the original route even after the predetermined time has elapsed, it is intentional rather than a mistake. It can be determined as a route departure.

  When it is determined that the route deviates due to a mistake (S200), the learning unit 108 records information regarding the point in the route deviating point information 860 as illustrated in FIG. That is, the latitude / longitude 8601, node ID 8602, entry link ID 8603, exit link ID 8604, departure link ID 8605, intersection shape 8606, departure angle 8607, entry link road width 8608, exit link road width 8609, departure link road width 8610 Etc. are recorded (S201).

  The departure point learning process S123 has been described above.

  Returning to FIG. As described above, the guiding unit 111 performs the guiding processes S121 to S123, and ends the process when it arrives at the destination (Yes in S123). Then, the learning unit 108 is instructed to start the learning process.

  [Learning Process] The learning unit 108 starts learning processes S <b> 131 to S <b> 133 for the traveled route in accordance with an instruction from the guiding unit 111.

  First, the learning unit 108 refers to the travel history 830 to detect a difference between the recommended route searched by the search process and the actually traveled route (S131). If there is no difference (No in S131), the learning unit 108 ends the process without newly registering a learned route in the learned route information 850. Note that whether or not the routes are different is determined by comparing the links constituting the routes in order from the departure point to the destination, and extracting the inconsistent portions. The learning unit 108 determines that the routes are different when the inconsistent portion (link) is extracted.

  On the other hand, when there is a difference (Yes in S131), the learning unit 108 compares the time required for the different sections (S132). If the required time of the actually traveled route is shorter than the required time of the recommended route ((1) in S132), the learning unit 108 registers the actually traveled route as the learned route in the learned route information 850. To do.

  In FIG. 9, it is assumed that a route indicated by a broken line 920 is actually traveled between the nodes 912 and 913 instead of the recommended route 930. Then, it is assumed that the required time between the nodes 912 and 913 of the route 920 actually traveled is shorter than the expected required time between the nodes 912 and 913 of the recommended route 930. In this case, the actually traveled route 920 is registered in the learned route information 850 as a learned route.

  On the other hand, when the required time of the recommended route is less than the required time of the actually traveled route ((2) in S132), the learning unit 108 performs processing without registering a new learned route in the learned route information 850. Exit.

  The operation of the navigation system according to this embodiment has been described above.

  According to the above flow, a recommended route is searched using information obtained when traveling in the past. Therefore, it is possible to search for a recommended route that suits a more appropriate situation.

  Further, according to the above flow, a point deviating from the recommended route due to a mistake is registered as a deviating point, which is useful for generating the next guidance point. Therefore, it is possible to prevent a mistake at a place where a mistake has been made.

  In addition, an intersection similar to a point that has deviated due to a mistake in the past is set as a guidance point. Therefore, mistakes can be prevented even on the first road.

  Also, it is determined whether or not to learn from the difference between the required time of the recommended route found and the required time of the actually traveled route. For example, simply deviating from a recommended route and actually driving cannot determine whether the route is a route preferred by the user. This is because there may have been a stop at that point for some reason. In such a case, if a route actually traveled is learned and registered, there is a possibility that a roundabout route will be searched in the next route search. In the above flow, the time required for the actually traveled route is compared with the time required for the recommended route, and when it is determined that the travel route is superior to the recommended route, the actual travel route is learned. Therefore, it is possible to extract and learn only the route preferred by the user from the travel routes.

  Whether or not to adopt the learned route takes into account the day of the week and the time zone on which the learned route was traveled in the past. In this way, by considering the date and time, it becomes possible to learn a route using traffic information that the user knows from experience.

  Although one embodiment of the present invention has been described above, the above embodiment can be variously modified within the scope of the gist of the present invention.

  In the above embodiment, the learning route is not adopted when the time zones do not match in S103. However, it is not limited to this. Depending on the road, there is a road where traffic congestion hardly occurs. Therefore, if all the samples in the morning, noon, and evening time zones have similar durations, the learning route should be adopted even if the learned time zone and the route search time zone are different. It may be.

  In this way, the learned route can be reflected in the route search even during a non-learned time zone, so that even when the number of travel routes is small and the accumulated learned route information is small, an early learning effect can be expected.

  If the learned route corresponding to the time zone at the time of route search is not recorded in the learned route information 850, the traffic jam information is obtained from another device such as an information center (not shown) that distributes traffic information. May be. It is assumed that the information center can distribute traffic information at any place in the country. Then, the navigation system is connected to the information center via a communication line via the communication device 60 to obtain traffic information. When performing a route search, the route search unit 104 obtains traffic information of an area to be searched, and uses a required time of a link (or a required link time generated from traffic jam information) included in the traffic information as a cost. , Route search. In this way, a more appropriate recommended route can be searched even when there is no learned information.

  In the above embodiment, the case where the required time (travel time) is used as the cost of route search has been mainly described. However, the distance may be used as the cost. When comparing the initially searched route and the learned route (S103), or when comparing the recommended route and the actually traveled route (S132), comparison may be made at each distance.

FIG. 1 is a diagram showing a schematic configuration of a navigation system to which an embodiment of the present invention is applied. FIG. 2 is a diagram showing the structure of map data. FIG. 3 is a diagram showing the configuration of the guidance intersection information. FIG. 4 is a diagram showing a configuration of learned route information. FIG. 5 is a diagram showing the configuration of route departure point information. FIG. 6 is a diagram showing a flow of processing from route search to learning. FIG. 7 is a diagram for explaining processing for generating a recommended route using a learned route. FIG. 8 is a diagram showing the structure of guidance information. FIG. 9 is a diagram for explaining a route learning process. FIG. 10 is a diagram for explaining the road configuration of the departure point. FIG. 11 is a diagram showing a flow of departure point learning processing. FIG. 12 is a screen display example at the guidance point.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Navi processing device, 20 ... Microphone, 30 ... Speaker, 40 ... Display device, 50 ... Positioning device, 60 ... Communication device, 70 ... Traffic information receiving part, 80 ... Hard disk device, 90 ... Input device,
DESCRIPTION OF SYMBOLS 101 ... Voice control part, 102 ... Screen control part, 103 ... Destination search part, 104 ... Route search part, 105 ... Guidance information generation part, 106 ... Locator, 107 ... Travel history storage part, 108 ... Learning part, 109 ... Traffic information processing unit, 110 ... Calendar / clock unit, 111 ... Guiding unit, 501 ... Gyro, 502 ... Vehicle speed sensor, 503 ... GPS receiver, 810 ... Point information, 820 ... Map data, 830 ... Driving history, 850 ... Learning Route information, 860 ... Route departure point information

Claims (12)

Deviation point storage means for storing a point deviating from the searched route;
Route search means for searching for a route;
A navigation device comprising guidance means for performing guidance for preventing a route departure when there is a point stored in the departure point storage means on the route searched by the route search means. . In claim 1,
When there is a point having a shape similar to the shape of the point stored in the departure point storage unit on the route searched by the route search unit, the guidance unit provides guidance for preventing a route departure at that point. A navigation device characterized by performing. In claim 2,
The guidance means, when there is an intersection on the route searched by the route search means, where the angle at which the road intersects is equal to or less than the intersection angle of the road at the intersection stored in the departure point storage means A navigation apparatus characterized in that guidance for preventing a departure from a route is provided at an intersection. In claim 1,
The departure point storage means stores information for specifying a departure point when the mobile body guided by the navigation device has deviated from the route searched by the route search means. In claim 4,
An error determination means for determining whether or not the deviation is due to a user error;
The departure point storage means stores information for identifying a departure point when it is determined by the error determination means that the user has made an error. In claim 5,
The navigation apparatus according to claim 1, wherein when the mobile unit returns to the original route after the departure from the route and the moving body returns to the original route, the error determination unit determines that the departure is due to a user error. A storage device for storing information for identifying a point deviating from the searched route;
Route search means for searching for a route from the departure place to the destination;
When there is a point stored in the departure point storage unit on the route searched by the route search unit, a guidance point registration unit that registers the point as a guidance point;
Guidance means for outputting guidance for preventing a route departure at the guidance point registered in the guidance point registration means;
When the route searched by the route search means deviates, the mistake determination means for determining whether the deviation is intentional or mistake of the user;
Means for storing the deviated point in the storage device when the error determination means determines that the user has made an error;
A navigation device comprising: A learning means for learning the actually traveled route when the actually traveled route is more advantageous in terms of time or distance than the route searched in advance;
A navigation device comprising route search means for searching for a route from a departure place to a destination using information on the route learned by the learning means. In claim 8,
The learning means compares the required time or distance for sections that differ between the route searched in advance by the route search means and the route actually traveled, and actually traveled from the route searched in advance. A navigation device characterized by learning a route actually traveled when the route is more advantageous in terms of required time or distance. In claim 8,
The route search means searches for a route from a departure place to a destination using information on a route learned from a travel history in a time zone that coincides with a scheduled time zone. . A navigation device route guidance method comprising:
The navigation device
A departure point storage means for storing a point deviating from the searched route;
A route search step for searching for a route;
When there is a point stored in the departure point storage unit on the route searched by the route search unit, a navigation step is performed for performing a guidance for preventing a route departure at the point. Route guidance method. A navigation device route guidance method comprising:
The navigation device
A learning step for learning a route actually traveled when a route actually traveled is more advantageous in terms of time or distance than a route searched in advance;
A route guidance method for a navigation apparatus, comprising: performing a route search step of searching for a route from a departure place to a destination using information on the route learned by the learning means.

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