JP2018040727A - Route guide device, route guide method, and computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve user-friendliness of route guidance.SOLUTION: A route guide device uses a result of a search for routes from a departure point to a destination point to guide a user, and the result of the search for routes includes a route searched on the basis of the number of corners, out of routes from the departure point to the destination point. The route guide device includes a display control unit which causes a display device connected to the route guide device to display the route searched on the basis of the number of corners and the total number of corners in the route, in a map on the basis of the result of the search for routes.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a technique for guiding a route from a departure place to a destination.

  2. Description of the Related Art Conventionally, a technology for searching for an optimum route according to a moving means from a departure place to a destination by using a portable terminal such as a mobile phone or a tablet device and providing route guidance to a user is known. . Patent Document 1 discloses a technique for searching for the shortest route from a departure point to a destination on a map and performing route guidance using a simplified map and a simple guidance sentence.

JP 2001-124582 A

  However, the technique for guiding the shortest route on the map described in Patent Document 1 may lack convenience for the user. For example, when the moving means is on foot, it can move on a narrow street, so even if it is somewhat difficult to understand, the route with the shortest route to the destination will be guided. At this time, if there is a user in an unknown area or moving on an incomprehensible route through a narrow street, the user may be worried about whether he can reach the destination, or enter the wrong road, etc. There is a risk of inconvenience. Such a problem is not limited to the case where the moving means is walking, but is common to any other moving means. Therefore, a technique for improving user convenience in route guidance is desired.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms.

(1) According to an embodiment of the present invention, there is provided a route guidance device that provides route guidance to a user using a route search result from a departure point to a destination. In the route guidance device, the route search result includes a route searched based on the number of corners among routes from the starting point to the destination; and based on the route search result, the route guidance The display device connected to the apparatus includes a display control unit that displays a route searched based on the number of corners on a map and displays the total number of corners in the route.
According to the route guidance device of this aspect, a route based on the number of corners is searched for among routes from the departure point to the destination, the route searched based on the number of corners together with the map, and the route Since the total number of corners is displayed, it is possible to guide the user to a clearer route among various routes from the starting point to the destination, and to easily calculate the total number of corners on the route. I can let you know. For this reason, it is possible to suppress the occurrence of inconvenience such as anxiety about whether the user can arrive at the destination or entering the wrong road, and the convenience of the user can be improved.

(2) In the route guidance device according to the above aspect, the route search result includes a shortest route from the starting point to the destination in addition to the route searched based on the number of corners; The unit may simultaneously display the shortest route and the route searched based on the number of corners on the same map displayed on the display device.
According to the route guidance device of this aspect, the shortest route and the route searched based on the number of corners are displayed on the same map at the same time, so that the user can pass through the shortest route and the number of corners. Thus, the difference from the case of passing through the searched route can be easily known. For this reason, for a user who is somewhat bright in the place, the shortest route can be selected, and the convenience of the user can be improved.

(3) In the route guidance device according to the above aspect, the display control unit causes the display device to display at least one of the shortest route and the route searched based on the number of corners as a recommended route. Also good.
According to the route guidance device of this embodiment, since at least one of the shortest route and the route searched based on the number of corners is displayed as a recommended route, when displaying the shortest route as a recommended route, It is possible to guide the route that can arrive at the destination the earliest, and when the route searched based on the number of corners is displayed as the recommended route, the purpose may be slightly confusing It is possible to improve user convenience in that it is possible to guide a route that is easier to understand than a configuration that guides the route having the shortest route length to the ground.

(4) In the route guidance device according to the aspect described above, the display control unit may cause the display device to display the order of passing through the corners in association with each corner of the route searched based on the number of corners. Good.
According to the route guidance device of this aspect, the order of passing through the corners is displayed in association with each corner of the route searched based on the number of corners. Therefore, the order of passing through the corners is associated with each corner. I can know. Thus, for example, the user can arrive at the destination more reliably by counting the number of corners that have passed.

(5) In the route guidance device according to the above aspect, the display control unit may cause the display device to display a direction in which the corner is bent in association with each corner of the route searched based on the number of corners. .
According to the route guidance device of this embodiment, the direction of the turn is displayed in association with each turn of the route searched based on the number of turns, so that the user can be informed in advance of the direction to turn next. It is possible to suppress the user from making a wrong turn.

(6) In the route guidance device according to the above aspect, the route search result includes a shortest route from the starting point to the destination in addition to the route searched based on the number of corners; The display unit displays at least one of the shortest path and the path searched based on the number of corners as a recommended path on the display device; and the display control unit counts the number of corners in the recommended path. And the estimated required time for passing through the recommended route may be displayed on the display device.
According to the route guidance device of this embodiment, since the total number of corners in the recommended route and the estimated time required when passing through the recommended route are displayed, the user can sum the number of corners in passing through the recommended route. The number and the estimated required time can be easily known, and the convenience of the user can be improved.

(7) In the route guidance device according to the above aspect, the display control unit makes the building at least one corner in the route searched based on the number of corners stand out more than a building not at the corner. You may display on a display apparatus.
According to the route guidance device of this embodiment, since the building at least one corner in the route searched based on the number of corners is displayed more conspicuously than the building not at the corner, the user should bend The place can be easily known, and it is possible to suppress turning at a wrong place. For this reason, it is possible to improve user convenience.

  The present invention can be realized in various forms. For example, the present invention can be realized in the form of a route guidance method, a route guidance system, an in-vehicle navigation device, a computer program for realizing these devices and methods, and the like.

It is explanatory drawing which shows schematic structure of the route guidance apparatus as 1st Embodiment of this invention. It is a flowchart which shows the process sequence of route guidance processing. It is explanatory drawing which shows the 1st example for demonstrating the definition of the corner in this embodiment. It is explanatory drawing which shows the 2nd example for demonstrating the definition of the corner in this embodiment. It is explanatory drawing which shows typically the map data which shows an example of the route search result in step S115. It is explanatory drawing which shows typically the result of the route search displayed on a display apparatus. It is explanatory drawing which shows typically the result of the route search displayed on the display apparatus in 2nd Embodiment. It is explanatory drawing which shows typically the result of the route search displayed on the display apparatus in 3rd Embodiment. It is explanatory drawing which shows typically the result of the route search displayed on the display apparatus in 4th Embodiment.

A. First embodiment:
A1. Device configuration:
FIG. 1 is an explanatory diagram showing a schematic configuration of a route guidance device 20 as a first embodiment of the present invention. In FIG. 1, in addition to the route guidance device 20, a communication carrier BS and a map server 50 are shown. The route guidance device 20 searches for a route from the departure point specified by the user to the destination, displays the route search result on a display device (a display device 205 described later), and provides route guidance to the user. I do. At this time, the route guidance device 20 refers to the map data 57 by accessing the map server 50 connected to the Internet INT via the communication carrier BS. The map data 57 will be described later. In this embodiment, the route guidance apparatus 20 is comprised with the smart phone. The route guidance device 20 is not limited to a smartphone, and may be configured by a portable information terminal such as a mobile phone or a tablet device, an in-vehicle navigation device, a personal computer, or the like.

  The route guidance device 20 includes a CPU 210, a ROM 201, a RAM 202, a communication unit 203, a current position acquisition unit 204, and a display device 205.

  The CPU 210 controls the entire route guidance device 20. The CPU 210 functions as the control unit 211, the designation receiving unit 212, the route search unit 213, the display control unit 214, and the route guide unit 215 by developing and executing a control program stored in the ROM 201 in the RAM 202.

  The control unit 211 controls the designation receiving unit 212, the route search unit 213, the display control unit 214, and the route guide unit 215, respectively, to perform route search, display of route search results, and route guidance.

  The designation receiving unit 212 receives a designation of a departure place and a destination from a user via a display device (a display device 205 described later). The designation receiving unit 212 may receive at least designation of the destination among the departure point and destination, and if there is no designation of the departure point, the departure from the current position acquired by the current position acquisition unit 204 described later is started. You may specify as the ground. The designation receiving unit 212 is not limited to the departure point and destination, and may accept designation of other arbitrary search conditions such as waypoints and arrival times. The designation receiving unit 212 includes various physical operation buttons such as a cross key and a numeric keypad instead of a display device (a display device 205 described later), and receives an operation from a user via these operation buttons. May be.

  The route search unit 213 refers to the map data 57 prepared in advance in the map server 50 and performs a route search from the departure point to the destination. In the present embodiment, among the routes from the departure point to the destination, the shortest route and the route based on the number of corners are searched for. In the present embodiment, the “shortest route” means a route having the shortest estimated time among routes from the starting point to the destination, a route having the shortest length from the starting point to the destination, and the like. To do. “The length of the route” means, for example, a value obtained by integrating the lengths (distances) of sections to be described later constituting the route. The estimated required time is obtained based on the length of the route from the departure place to the destination, the moving means, the traffic situation, and the like. In addition, the “route based on the number of corners” means a route searched based on the number of corners in the route from the departure point to the destination, for example, a corner of the route from the departure point to the destination. For example, a route that minimizes the number of In the present embodiment, as a route searched based on the number of corners, a route having the smallest number of corners will be described as an example. A detailed description of the “bend corner” will be described later.

  The display control unit 214 displays the route search result on the map indicated by the map data 57 displayed on the display device 205. The route guide unit 215 guides the route determined by the user. Specifically, a mark indicating the current position is displayed on the route of the map displayed on the display device 205, and guidance to the destination is performed.

  The communication unit 203 accesses the map server 50 connected to the Internet INT via a communication carrier BS including a transmission / reception antenna, a radio base station, and an exchange, and receives map data 57.

  The current position acquisition unit 204 acquires the current position of the route guidance device 20. Specifically, the current position (longitude / latitude) of the route guidance device 20 (user) is measured based on radio waves received from artificial satellites constituting a GPS (Global Positioning System / Global Positioning System).

  The display device 205 displays a screen for designating a departure point and a destination, a display screen for a route search result, and the like according to an instruction from the display control unit 214. In the present embodiment, the display device 205 is configured by a touch panel. The display device 205 receives a touch operation from the user with a finger or a stylus pen.

  The map server 50 includes a communication unit 52, a control unit 54, and a map database 56. The map server 50 communicates with the route guidance device 20 via the Internet INT. Since the map server 50 is configured by a general server device, detailed description thereof is omitted.

  Map data 57 is prepared in advance in the map database 56. The map data 57 includes network data representing roads by links and nodes, polygon data for drawing roads and buildings, and the like.

  The control unit 54 includes a CPU and a memory (not shown), and controls the entire operation of the map server 50. The control unit 54 reads the map data 57 in response to a request from the route guidance device 20 via the communication unit 52 and transmits it to the route guidance device 20.

A2. Route guidance process:
FIG. 2 is a flowchart showing a processing procedure of route guidance processing. When the user calls the route guidance function in the route guidance device 20, the route guidance process is executed. The current position acquisition unit 204 acquires the current position (step S100). Specifically, the current position acquisition unit 204 measures the longitude and latitude of the current position, and refers to the map data 57 via the communication unit 203. The current position acquisition unit 204 acquires the current position on the map indicated by the map data 57 based on the obtained longitude / latitude. Then, the current position acquisition unit 204 designates the current position as a departure place. Note that the departure place is not limited to the method of setting the current position as the departure place, but may be designated by the user as in the case of specifying a destination described later.

  The designation receiving unit 212 sets a destination (step S105). For example, designation of a destination by a user operation is accepted, and the designated destination is designated as a destination for route search. Specifically, the designation receiving unit 212 displays a map on the display device 205 via the display control unit 214. Next, the user designates the destination by touching a desired position on the map displayed on the display device 205. The destination is not limited to the method of directly specifying on the map displayed on the display device 205, but by any other method such as a method of selecting a main facility from a menu or a method of inputting an address by text. There may be.

  When the destination is set, the route search unit 213 refers to the map data 57 (step S110). Specifically, the route search unit 213 accesses the map server 50 via the communication unit 203. Then, the route search unit 213 receives the map data 57 including the departure place and the destination from the map server 50. When receiving the map data 57 from the map server 50, the route search unit 213 searches for the shortest route and the route with the smallest number of corners (step S115). Each path searched includes each node that passes through and a section between nodes that consists of one or more links.

  FIG. 3 is an explanatory diagram showing a first example for explaining the definition of the turning angle in the present embodiment. In the present embodiment, the “bending angle” refers to one of the center lines of two links sharing the same node as a reference line, and an angle between the reference line and the other center line is less than a predetermined angle. Means the intersection of two links. In the present embodiment, the predetermined angle is 130 degrees. The predetermined angle is not limited to 130 degrees, and may be any other angle as long as the angle is greater than 0 degrees and smaller than 180 degrees. When the intersection of two links is a corner, the two links are regarded as one independent section.

  As shown in FIG. 3, the end point of the link A is connected to two nodes N1 and N2. The end point of link B is connected to two nodes N2 and N3. That is, the node N2 is a common node for the link A and the link B. The center line CX1 of the link A and the center line CX2 of the link B intersect at the node N2. When the center line CX1 of the link A is used as a reference line, from the reference line (CX1) to the center line CX2 of the link B The angle θ1 between the angles is less than a predetermined angle. Therefore, the portion where link A and link B intersect is a corner, and links A and B are regarded as section 1 and section 2 that are independent of each other.

  FIG. 4 is an explanatory diagram showing a second example for explaining the definition of the turning angle in the present embodiment. As shown in FIG. 4, the link C is connected to two nodes N4 and N5. The link D is connected to the two nodes N5 and N6. The node N5 is a common node for the link C and the link D. The center line CX3 of the link C and the center line CX4 of the link D intersect at the node N5. When the center line CX3 of the link C is used as a reference line, from the reference line (CX3) to the center line CX4 of the link D Is larger than the angle θ1 shown in FIG. 3 and is equal to or larger than a predetermined angle. In this case, a portion where the link C and the link D intersect with each other is not a corner. At this time, the node N5 is thinned out from the map data, and the links C and D connected to the node N4 and the node N6 are regarded as one section 3.

  FIG. 5 is an explanatory diagram schematically showing map data 57 showing an example of the route search result in step S115. In FIG. 5, the route search result is represented on the map indicated by the map data 57. In FIG. 5, the shortest route r1 is represented by a broken line, and the route r2 having the smallest number of corners is represented by a one-dot chain line. In step S115, the route search unit 213 searches for the shortest route r1 from the departure point S to the destination G and the route r2 having the smallest turning angle, with reference to the map data 57 shown in FIG.

  In FIG. 5, as shown in the result of the route search, there are seven corners of the shortest route r1, sc1, sc2, sc3, sc4, sc5, sc6, and sc7. Further, there are three corners c1, c2 and c3 in the route r2 having the smallest number of corners. The route search unit 213 generates route information of the searched shortest route r1 and the route r2 having the smallest number of corners, and step S115 ends. The route information includes information related to sections constituting each route, for example, information such as links and nodes. The display control unit 214 causes the display device 205 to display the shortest route r1 and the route r2 having the smallest number of turns along with the total number of turns and the estimated required time in each route (step S120). A well-known method can be adopted as a method for calculating the estimated required time.

  FIG. 6 is an explanatory diagram schematically showing the result of the route search displayed on the display device 205. In FIG. 6, as in FIG. 5, the shortest route r1 is represented by a broken line, and the route r2 having the smallest number of corners is represented by a one-dot chain line. As shown in FIG. 6, the shortest route r1 and the route r2 with the smallest number of corners are simultaneously displayed on the same map. In the present embodiment, the route r2 with the smallest number of corners is displayed as the recommended route.

  In addition, on the respective routes of the shortest route r1 and the route r2 having the smallest number of corners, the order of passing through the corners is displayed in a balloon in association with each corner. The order of passing through the corner is equal to the total number of corners that have passed from the starting point S to the corner. That is, the order of passing through the last turning corner is equal to the total number of turning corners in the route. Therefore, in FIG. 6, it can be said that the total number of corners in each of the shortest path r1 and the path r2 having the smallest number of corners is displayed. The method of displaying the order of passing through the corners in association with each corner is not limited to the method of displaying with a balloon, and the identification number is displayed at each corner, and the identification number and the order of passing are separated from each route. Other arbitrary display methods such as a method of displaying the correspondence relationship, for example, as a list may be used.

  As shown in FIG. 6, in the upper left part of the display device 205, an estimated required time when passing through each route is displayed. The estimated required time for passing through the shortest route r1 is 8 minutes, and the estimated required time for passing through the recommended route (route r2 with the smallest number of corners) is 14 minutes. As shown in FIG. 2, when the shortest route r1, the route r2 with the smallest number of turns, and the total number of turns and the estimated time required for each route are displayed, the user can One target route for route guidance is selected. Then, the route guidance unit 215 determines the designated route as a route for performing route guidance (step S125).

  When the route is determined, the route guidance unit 215 performs route guidance (step S130). Specifically, the route guidance unit 215 acquires the current position via the current position acquisition unit 204, and indicates the current position on the route of the map displayed on the display device 205 via the display control unit 214. Display the mark. Next, the route guidance unit 215 determines whether or not the destination G has been reached (step S135). Whether or not the destination G has been reached is determined, for example, based on whether or not the current position is within a circular area having a predetermined distance centered on the destination G. In the present embodiment, the “predetermined distance” is a radius of 10 m. The predetermined distance is not limited to the radius of 10 m, and may be any other value. Further, whether or not the vehicle has arrived at the destination G may be determined based on the number of times the current position is measured in the circular area described above. In this case, when the current position is measured a predetermined number of times, for example, three times in the circular area, it is determined that the destination G has been reached. Moreover, you may determine whether it arrived at the destination G not only by these methods but by other arbitrary methods.

  If the current position is within a circular area with a predetermined distance centered on the destination G, it is determined that the destination G has been reached (step S135: YES), and the route guidance process ends. If it is determined that the vehicle has not arrived at the destination G (step S135: NO), the process returns to step S130, and the route guidance is performed while repeating the above-described steps S130 and S135 until the vehicle arrives at the destination G. .

  According to the route guidance device 20 of the present embodiment described above, among the routes from the departure point S to the destination G, the shortest route r1 and the route r2 having the smallest number of corners as the route based on the number of corners. And the respective searched routes are simultaneously displayed on the same map, so that it is possible to easily know the difference between the case of passing through the shortest route r1 and the case of passing through the route r2 having the smallest number of corners. it can. Further, by displaying the route r2 having the smallest number of corners, it is possible to guide the user to a more easily understood route among the various routes from the departure point S to the destination G. In addition, since the order of passing through the corners is displayed in association with the respective corners in each searched route, the respective corners and the order of passing through the corners can be known in association with each other, and the difference between the respective routes can be more specifically determined. To know. Further, since the estimated required time when passing through each route is displayed, it can be used as an index when the user selects a route together with the total number of corners and the complexity of the route. For this reason, it is possible to improve user convenience.

B. Second embodiment:
FIG. 7 is an explanatory diagram schematically showing a route search result displayed on the display device 205 according to the second embodiment. The route guidance device 20 according to the second embodiment differs from the route guidance device 20 according to the first embodiment only in the manner in which the result of the route search is displayed to the user. Since the device configuration of the route guidance device 20 of the second embodiment is the same as that of the route guidance device 20 of the first embodiment, detailed description thereof is omitted. In FIG. 7, the shortest route r1 is represented as the route 1, and the route r2 having the smallest number of corners is represented as the route 2. In FIG. 7, as in FIG. 5, the shortest path r <b> 1 is represented by a broken line, and the path r <b> 2 having the smallest number of corners is represented by a one-dot chain line.

  The display mode of the route search result in the second embodiment is different from the display mode of the route search result in the first embodiment in that the total number of corners is displayed in the list L1 in the upper right part of the display device 205. . In the list L1, route 1 and route 2 are displayed as candidate routes, and the total number of corners in each route of route 1 and route 2 is displayed as the total number of corners.

  The route guidance device 20 of the second embodiment having the above configuration has the same effect as the route guidance device 20 of the first embodiment. In addition, the total number of corners in each of the shortest route r1 and the route r2 having the smallest number of corners is displayed in the list L1. Therefore, compared to the configuration in which the total number of corners is displayed in association with each corner on the map, the difference in the total number of corners in each route can be easily known, and the convenience of the user is improved. Can do.

C. Third embodiment:
FIG. 8 is an explanatory diagram schematically showing a route search result displayed on the display device 205 in the third embodiment. The route guidance device 20 of the third embodiment is different from the route guidance device 20 of the first embodiment only in the manner of displaying the result of route search to the user. Since the device configuration of the route guidance device 20 of the third embodiment is the same as that of the route guidance device 20 of the first embodiment, detailed description thereof is omitted. In FIG. 8, as in FIG. 5, the shortest route r1 is represented by a broken line, and the route r2 having the smallest number of corners is represented by a one-dot chain line.

  The display mode of the route search result in the third embodiment is that the display direction of the route search result in the first embodiment is such that in addition to the order of passing through the turn corner, the direction in which the turn corner is bent is displayed in association with each turn corner. And different. As shown in FIG. 8, the direction in which the user turns the corner when the user views the corner in front of the traveling direction is displayed as a balloon. In addition, as a method of displaying the direction of turning at a corner in association with each corner, the display method is not limited to the method of displaying with a balloon, and any other display method such as a method of displaying an arrow symbol indicating the direction of turning may be used. .

  The route guidance device 20 of the third embodiment having the above configuration has the same effect as the route guidance device 20 of the first embodiment. In addition, the direction in which the corner is bent is displayed in association with each corner on the respective routes of the shortest path r1 and the path r2 having the smallest number of corners. Therefore, at each corner from the starting point S to the destination G, the user can be informed in advance of the direction to be bent next, and the user can be prevented from making a mistake in the direction of turning. For this reason, it is possible to improve user convenience.

D. Fourth embodiment:
FIG. 9 is an explanatory diagram schematically showing a route search result displayed on the display device 205 in the fourth embodiment. The route guidance device 20 according to the fourth embodiment differs from the route guidance device 20 according to the first embodiment only in the manner in which the result of the route search is displayed to the user. Since the device configuration of the route guidance device 20 of the fourth embodiment is the same as that of the route guidance device 20 of the first embodiment, detailed description thereof is omitted. In FIG. 9, as in FIG. 5, the shortest route r1 is represented by a broken line, and the route r2 having the smallest number of corners is represented by a one-dot chain line. In FIG. 9, the vicinity of the corner c2 in the route r2 having the smallest number of corners shown in FIG. 5 is shown in an enlarged manner.

  The route search result display mode in the fourth embodiment is that the building at the corner of the route r2 with the smallest number of corners is displayed more conspicuously than the building at the corner is not. It is different from the result display mode. As shown in FIG. 9, the building b2 at the corner c2 is displayed in a three-dimensional and enlarged manner as compared with the building b1 not at the corner. The method of displaying the building at the corner in a conspicuous manner is not limited to the three-dimensional display method or the enlarged display method, but the display method by changing the color or the outline of the building is displayed thickly. Other arbitrary display methods such as a method and a method of displaying with a balloon can be adopted.

  The route guidance device 20 of the fourth embodiment having the above configuration has the same effect as the route guidance device 20 of the first embodiment. In addition, since buildings at corners are displayed more prominently than buildings at corners, the user bends compared to a configuration that displays buildings at corners and buildings at corners in the same manner. It is easy to know where to be and it is possible to suppress turning at an incorrect place. For this reason, it is possible to improve user convenience.

E. Variations:
E1. Modification 1:
In each of the embodiments described above, the route r2 having the smallest number of corners is used as the recommended route, but the present invention is not limited to this. For example, the shortest route r1 may be a recommended route, and both the route r2 and the shortest route r1 having the smallest number of corners may be recommended routes. Specifically, the shortest route r1 may be used as a recommended route when the difference in length between the shortest route r1 and the route r2 having the smallest number of corners is equal to or greater than a predetermined value. In addition, when the difference in the number of corners between the shortest route r1 and the route r2 having the smallest number of corners is equal to or less than a predetermined value, the shortest route r1 may be set as a recommended route. That is, in general, if the configuration is such that at least one of the shortest route and the route searched based on the number of corners is a recommended route, the same effects as those of the embodiments are obtained.

  Further, any other route that matches the search condition specified by the user may be used as the recommended route. Also, out of a plurality of routes searched based on the number of corners, one route may be set as a recommended route based on the length of the route, the estimated time required, the number of landmark facilities along the route, etc. Good. Specifically, as two paths searched based on the number of corners, for example, the path length is compared between a path with the smallest number of corners and a path with the second smallest number of corners, and the number of corners. If the length of the path with the second smallest number is shorter than the length of the path with the smallest number of turns, a route with the second smallest number of turns may be used as the recommended route. Also in these structures, there exists an effect similar to each embodiment.

E2. Modification 2:
In each of the above embodiments, the shortest route r1 and the route r2 having the smallest number of corners are simultaneously displayed on the same map, but the present invention is not limited to this. The display control unit 214 may switch and display, for example, a screen that displays the shortest route r1 on the map and a screen that displays the route r2 with the smallest number of corners on the map using tabs. Even in such a configuration, the same effects as those of the embodiments can be obtained.

E3. Modification 3:
In each said embodiment, although the route search part 213 performed route search, this invention is not limited to this. For example, in a configuration further including a route search server, the route guidance device 20 transmits a designated departure place and destination to the route search server, and the route search server that has received these refers to the map data 57. A configuration in which a route search is performed and the result of the route search is transmitted to the route guidance device 20 may be adopted. Even in such a configuration, the same effects as those of the embodiments can be obtained.

E4. Modification 4:
In each of the above embodiments, the route search unit 213 performs a route search based on the departure point information (current position information) and the destination information, but the present invention is not limited to this. For example, a route search is performed based on route location information or search condition information specified by the user, for example, search condition information such as a user's means of transportation, a search with priority on a walkway with many roofs or a walkway with few stairs, etc. You may go. A user's moving means is a means of transportation currently used by the user of the route guidance device 20. Examples of the user's moving means include walking, bicycle, automobile, and train. Even in such a configuration, the same effects as those of the embodiments can be obtained.

E5. Modification 5:
In each of the above embodiments, the route search result is displayed on the display device 205 of the route guidance device 20, but the present invention is not limited to this. For example, in a configuration in which a portable information terminal separate from the route guidance device 20 is connected to the route guidance device 20, the route search result may be displayed on the display device of the information terminal. Even in such a configuration, the same effects as those of the embodiments can be obtained.

E6. Modification 6:
In each of the above embodiments, the estimated required time is displayed in addition to the total number of corners in each route, but the length of the route may be further displayed. Even in such a configuration, the same effects as those of the embodiments can be obtained. In addition, the length of the route can be used as an index when the user selects a route, and the convenience for the user can be further improved.

E7. Modification 7:
In each of the above embodiments, the total number of corners in each searched route is displayed on the map, but the present invention is not limited to this. For example, a screen that displays a map of route search results and a screen that displays a list of the total number of corners may be displayed side by side. That is, in general, the same effects as those of the embodiments can be obtained as long as the total number of corners in each route is displayed together with the map.

E8. Modification 8:
In each of the above embodiments, a building at one corner in the route r2 having the smallest number of corners is displayed conspicuously, but the present invention is not limited to this. The number of corners that make a building stand out and displayed is not limited to one, but may be all corners, for example, corners that are large and difficult to understand. In other words, in general, the same effect as that of each embodiment is provided as long as a configuration that displays a building at least at one corner in a route searched based on the number of corners more conspicuously than a building that is not at the corner. Play.

E9. Modification 9:
In each of the above embodiments, the shortest route r1 and the route r2 having the smallest number of corners are different from each other, but the present invention is not limited to this. For example, the shortest route r1 and the route r2 with the smallest number of corners may be the same route. In this case, the route may be displayed on the map, and the route may be displayed as the shortest route r1 and the route r2 having the smallest number of corners. As a result, the user can be informed that the route displayed as the route search result is the shortest route r1 and the route r2 having the smallest number of corners. Therefore, the user can be prevented from misunderstanding that either one of the shortest route r1 and the route r2 having the smallest number of corners is not displayed, and the convenience of the user can be improved.

E10. Modification 10:
In each of the above embodiments, the total number of corners on the respective routes of the shortest route r1 and the route r2 having the smallest number of corners is displayed, but the present invention is not limited to this. For example, in a route guidance device configured to guide a plurality of routes searched based on search conditions such as distance priority, time priority, road priority without stairs, road priority with a roof, road priority with few slopes, etc. While displaying these routes on a map, the total number of corners in each route may be displayed. As a result, when the user selects a target route for route guidance, the total number of corners in each route can be referred to, and the convenience of the user can be improved.

  Further, for example, when a plurality of routes are obtained as a result of route search under the same conditions, the plurality of routes are displayed on the map and the total number of corners in each route is displayed. Good. Even in such a configuration, the same effects as those of the above embodiments can be obtained.

E11. Modification 11:
In the fourth embodiment, the building at the corner is displayed conspicuously, but the present invention is not limited to this. What is displayed prominently is not limited to buildings, for example, facilities such as stores and post offices, and facilities that can be targets such as parks, but may be facility information such as annotation information and icons of these facilities. Also, as a method of displaying such facility information conspicuously, in addition to the above-described enlarged display method, the method of changing the color display, the method of displaying with a balloon, the method of flashing display, Any display method such as a combination of these methods can be employed. Even in such a configuration, the same effects as in the fourth embodiment can be obtained.

E12. Modification 12:
In the above embodiment, the current position is acquired using GPS, but the present invention is not limited to this. For example, GLONASS (Global Navigation Satellite System), satellite positioning systems other than GPS such as Galileo (Satelite Navigation System), in other words, Global Navigation Satellite System (GNSS) can be used. Good. Even in such a configuration, the same effects as those of the above embodiments can be obtained.

E13. Modification 13:
In the embodiment and the modification, a part of the configuration realized by hardware may be replaced by software, and conversely, a part of the configuration realized by software may be replaced by hardware. Good. In addition, when part or all of the functions of the present invention are realized by software, the software (computer program) can be provided in a form stored in a computer-readable recording medium. In the present invention, the “computer-readable recording medium” is not limited to a portable recording medium such as a flexible disk or a CD-ROM, but an internal storage device in a computer such as various RAMs and ROMs, a hard disk, and the like. An external storage device fixed to the computer is also included. That is, the “computer-readable recording medium” has a broad meaning including an arbitrary recording medium capable of fixing data instead of temporarily.

  The present invention is not limited to the above-described embodiments and modifications, and can be realized with various configurations without departing from the spirit of the present invention. For example, the technical features in the embodiments and the modifications corresponding to the technical features in each embodiment described in the summary section of the invention are to solve some or all of the above-described problems, or In order to achieve part or all of the effects, replacement or combination can be performed as appropriate. Further, if the technical feature is not described as essential in the present specification, it can be deleted as appropriate.

θ1, θ2 ... Angle 20 ... Route guidance device 50 ... Map server 52 ... Communication unit 54 ... Control unit 56 ... Map database 57 ... Map data 201 ... ROM
202 ... RAM
203 ... Communication unit 204 ... Current position acquisition unit 205 ... Display device 210 ... CPU
211: control unit 212 ... designation receiving unit 213 ... route search unit 214 ... display control unit 215 ... route guide unit A, B, C, D ... link BS ... communication carrier CX1, CX2, CX3, CX4 ... center line G ... purpose Earth INT ... Internet L1 ... List N1, N2, N3, N4, N5, N6 ... Node S ... Departure location b1, b2 ... Building r1 ... Shortest route r2 ... Route with the least number of corners c1, c2, c3 ... Angle sc1 , Sc2, sc3, sc4, sc5, sc6, sc7 ... angle

Claims (9)

A route guidance device that provides route guidance to a user using a route search result from a departure place to a destination,
The route search result includes a route searched based on the number of corners among routes from the starting point to the destination,
Based on the route search result, on the display device connected to the route guidance device, the route searched based on the number of corners is displayed on a map, and the total number of corners in the route is displayed. A display control unit for displaying,
Route guidance device. The route guidance device according to claim 1,
The route search result includes the shortest route from the starting point to the destination in addition to the route searched based on the number of corners,
The display control unit simultaneously displays the shortest route and the route searched based on the number of corners on the same map displayed on the display device;
Route guidance device. In the route guidance device according to claim 2,
The display control unit causes the display device to display at least one of the shortest path and the path searched based on the number of corners as a recommended path.
Route guidance device. In the route guidance device according to any one of claims 1 to 3,
The display control unit causes the display device to display an order of passing through the corners in association with each corner of the route searched based on the number of corners.
Route guidance device. In the route guidance device according to any one of claims 1 to 4,
The display control unit causes the display device to display a direction in which the corner is bent in association with each corner of the route searched based on the number of corners.
Route guidance device. In the route guidance device according to any one of claims 1 to 5,
The route search result includes the shortest route from the starting point to the destination in addition to the route searched based on the number of corners,
The display control unit causes the display device to display at least one of the shortest route and the route searched based on the number of corners as a recommended route,
The display control unit causes the display device to display the total number of the corners in the recommended route and the estimated required time when passing through the recommended route.
Route guidance device. In the route guidance device according to any one of claims 1 to 6,
The display control unit causes the display device to display a building that is at least one corner in the route searched based on the number of corners, more prominently than a building that is not at the corner.
Route guidance device. A route guidance method that provides route guidance to a user using a route search result from a departure place to a destination,
The route search result includes a route searched based on the number of corners among routes from the starting point to the destination,
Based on the route search result, the display device includes a step of displaying a route searched based on the number of corners on a map and displaying the total number of corners in the route.
Route guidance method. A computer program for performing route guidance for a user using a route search result from a departure place to a destination,
The route search result includes a route searched based on the number of corners among routes from the starting point to the destination,
A function of displaying, on a display device connected to a computer based on the route search result, a route searched based on the number of corners on a map and displaying the total number of corners in the route. For the computer to realize
program.

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