JP5674512B2 - Portable navigation device, portable navigation method, and program - Google Patents

Description

  The present invention relates to a portable navigation device for searching for a route.

  Conventionally, there has been an algorithm for determining the shortest path called Dijkstra's Algorithm (see, for example, Non-Patent Document 1). The Dijkstra method is a method in which the shortest route is checked while calculating distances in the order of short distances radially from the starting point. The Dijkstra method is an algorithm in which the route becomes the shortest route when the destination is reached. Furthermore, in the Dijkstra method, the required memory amount and processing time increase in proportion to the number of links and nodes. Note that a node is a point on the map. A link is a line or the like connecting nodes.

  Conventionally, there has been an algorithm for determining the shortest path called an A * algorithm (see, for example, Non-Patent Document 2). The A * algorithm is an algorithm that efficiently solves the shortest path problem when the estimated value h * (n) of the distance from each vertex n to the goal is known. The A * algorithm is an idea in which a predicted distance is added to the Dijkstra method, and the arrival step to the destination is shorter than the Dijkstra method. In addition, since the predicted distance is included in the A * algorithm, the route may not be the shortest route when the destination is reached. In the A * algorithm, priority is given to reaching the destination, and the memory capacity and processing time can be reduced.

"Dijkstra method (shortest path problem)", [online], [searched on February 17, 2011], Internet <URL: http://www.deqnotes.net/acmicpc/dijkstra/> "A *" [online], [Search February 17, 2011], Internet <URL: http://en.wikipedia.org/wiki/A*>

  However, in the conventional portable navigation device, although it is possible to search for a route, there is a problem in that it is impossible to appropriately notify the user of the movement status of the user moving along the searched route. . In particular, in a portable navigation device having a plurality of operation modes other than the navigation mode, when the operation mode other than the navigation mode is used, it does not function as navigation. Even so, it has not been possible to properly notify the user of the movement status.

  The portable navigation device according to the present invention includes a map information storage unit that stores map information including road information that is information about a map and is information about a road indicated by the map, and departure point information that is information indicating a departure point. And a receiving unit that receives destination information that is information indicating the destination, and a route from the departure point to the destination is searched using the road information, the departure point information, and the destination information. A route search unit for acquiring route information as information, a display unit for displaying a navigation screen including a map indicated by the map information, a route information storage unit for storing route information acquired by the route search unit, and a route search unit The route information indicated by the route information is a storage unit that accumulates the route information acquired by the route information storage unit, a current location information acquisition unit that acquires current location information that is information indicating the current location, and the current location indicated by the current location information. A portable navigation device comprising: a determination unit that determines whether or not a condition specified in advance is satisfied; and an output unit that performs output in accordance with a determination result of the determination unit. A navigation mode that is an operation mode for displaying a screen, and one or more operation modes that do not display a navigation screen, and the determination unit is configured to operate with respect to a route indicated by route information in an operation mode other than the navigation mode. It is a portable navigation device that determines whether or not a predetermined condition is satisfied.

  With this configuration, it is possible to appropriately notify the user of the movement status of the user moving along the searched route in an operation mode other than the navigation mode.

  In the portable navigation device of the present invention, in the portable navigation device, the determination unit is a case where the portable navigation device is in an operation mode other than the navigation mode, and route information is stored in the route information storage unit. The portable navigation device determines whether the current location satisfies a condition specified in advance for the route indicated by the route information.

  With this configuration, if route information is stored in an operation mode other than the navigation mode, it is possible to appropriately notify the user of the movement status of the user moving along the searched route.

  In the portable navigation device of the present invention, in the portable navigation device, when an output stop instruction receiving unit that receives an output stop instruction that is an instruction to stop the output of the determination result by the output unit and an output stop instruction are received. And a deletion unit that deletes the route information from the route information storage unit.

  With such a configuration, it is possible to cancel the notification of the movement status of the user moving along the searched route.

  In the portable navigation device of the present invention, in the portable navigation device, the determination unit determines whether the current location has deviated from the route indicated by the route information, and the output unit has deviated from the route. The portable navigation device outputs information indicating that the vehicle has deviated from the route.

  With this configuration, it is possible to notify the user that the user has deviated from the route indicated by the route information in an operation mode other than the navigation mode.

  In the portable navigation device of the present invention, in the portable navigation device, the determination unit determines whether or not the current location is a point indicated by the destination information, and the output unit is the determination unit. The portable navigation device outputs information indicating that the vehicle has arrived at the destination when it is determined.

  With this configuration, it is possible to notify the user that the user has arrived at the destination in an operation mode other than the navigation mode.

  In the portable navigation device of the present invention, the output unit is a portable navigation device that outputs vibration according to a determination result of the determination unit.

  With this configuration, it is possible to notify the determination result of whether or not the current location satisfies a condition specified in advance for the route indicated by the route information by vibration. As a result, even when the portable navigation device is used in an operation mode other than the navigation mode, the determination result of the determination unit can be appropriately notified to the user.

  In the portable navigation device of the present invention, the output unit is a portable navigation device that outputs sound according to a determination result of the determination unit.

  With this configuration, it is possible to notify the determination result of whether or not the current location satisfies a condition specified in advance for the route indicated by the route information by voice. As a result, even when the portable navigation device is used in an operation mode other than the navigation mode, the determination result of the determination unit can be appropriately notified to the user.

  According to the portable navigation device or the like according to the present invention, it is possible to appropriately notify the user of the movement status of the user moving along the searched route.

Block diagram of a portable navigation device in an embodiment of the present invention Flow chart showing the operation of the portable navigation device Conceptual diagram of the portable navigation device The figure which shows an example of the map symbol information of the portable navigation device The figure which shows the node management table | surface of the portable navigation apparatus The figure which shows the link management table | surface of the portable navigation apparatus Schematic diagram of nodes and links of the portable navigation device arranged on a map The figure which shows the example of a display of the portable navigation apparatus The figure which shows an example of the route information of the portable navigation apparatus The figure which shows the example of a display of the portable navigation apparatus The figure which shows the example of a display of the portable navigation apparatus The figure which shows the example of a display of the portable navigation apparatus The figure which shows an example of the external appearance of the computer system in embodiment of this invention The figure which shows an example of a structure of the computer system

  Hereinafter, embodiments of a portable navigation device and the like will be described with reference to the drawings. In addition, since the component which attached | subjected the same code | symbol in embodiment performs the same operation | movement, description may be abbreviate | omitted again.

(Embodiment)
FIG. 1 is a block diagram of a portable navigation device 1 according to the present embodiment.

  The portable navigation device 1 includes a map information storage unit 101, a reception unit 102, a route search unit 103, a display unit 104, a route information storage unit 105, a storage unit 106, a current location information acquisition unit 107, a determination unit 108, an output unit 109, An output stop instruction receiving unit 110 and a deletion unit 111 are provided.

  The portable navigation device 1 is a navigation device that can be carried by a user. A navigation device that can be attached to and detached from a bicycle may also be considered as a portable navigation device. The navigation device is, for example, a device that outputs a map of the current location or destination, or outputs a route from the current location to the destination. The portable navigation device 1 may be a device dedicated to navigation, or may be a portable terminal such as a mobile phone, a smartphone, or a camera that realizes a navigation function. The portable navigation device 1 may have one or more functions other than the navigation function. The navigation function is, for example, a function for displaying a map for navigation or a function for performing a route search. The one or more functions other than the navigation function are, for example, a function of making a telephone call, a function of performing an email, a function of taking and browsing a photo, and a function of browsing a web page. The means for realizing the navigation function and other functions may be provided as, for example, an individual application that operates on the portable navigation device 1.

  In the present embodiment, in particular, portable navigation device 1 has a navigation mode that is an operation mode for displaying display unit 104 and a navigation screen, which will be described later, and one or more other operation modes. . The operation mode may be considered as an operation state, for example. Alternatively, a state where a specific job is being performed or a state where a specific application, task, or program is active may be considered as one operation mode. The term “active” as used herein means active in multitasking or the like, for example, meaning that it is a target of user input or operation. For example, the navigation mode may be considered as an active state of a program that displays a navigation screen and realizes a navigation function. Note that the active operation mode may be considered as an operation mode performed in the foreground. The other operation modes include, for example, a telephone mode for making a telephone call, a mail mode for executing mail transmission / reception, a WEB browsing mode for browsing a WEB page, and the like. The other operation mode may be considered as an operation mode in which, for example, the navigation screen is not displayed and another screen is displayed. Since the portable navigation device 1 is a small portable device, the monitor display area is often small. For this reason, in many cases, only the screen of one operation mode is usually displayed on the monitor. That is, when the operation mode is switched, in many cases, only the screen of one switched operation mode is displayed. The portable navigation device 1 according to the present embodiment may be a portable navigation device in which only the screen in one operation mode is displayed on the display unit 104. In addition, in order to suppress battery consumption during the display of the navigation screen, the screen display may be stopped as an operation mode other than the navigation mode.

  The map information storage unit 101 stores map information. Map information is information relating to a map. The map information has road information. The road information is information regarding the road indicated by the map. The map information usually further includes map symbol information that is an image of a map. The map symbol information is, for example, bitmap data (raster data) or vector data constituting the map, or a combination thereof. The file format of the map symbol information is not limited to the GIF format, JPEG format, PNG format, or the like. The map information may be an ISO kiwi map data format. The map information may include character strings such as place names written on the map, names of buildings, scenic spots, and places.

  The map information includes, for example, positional information indicating absolute positions, such as coordinate information having longitude and latitude of the area displayed by the map information, and the positional relationship between the areas indicated by each map among the map information. It has or is associated with positional information indicating a relative position that can be understood. For example, you may have the information which defines the range and center point of the map which map information displays with the range of latitude and longitude. By using such position information, coordinates on the map and coordinates in the real space (for example, latitude and longitude) can be appropriately converted. Further, the map information may have position information that can specify a position such as an address in the map indicated by the map information. Moreover, the map information may have map symbol information for each scale, or map information may be prepared for each scale. Usually, map information is managed in association with a map scale. Specifically, the map information may include information on a map scale value output by the map information, or the map information may be stored in 101 in association with the map scale. . The scale of the map here may be considered as information indicating the value of the scale of the map.

  The road information is information related to the road. The road information includes, for example, node data and link data. The node indicates a point where roads are connected such as an intersection or a branch point. Node data is information related to the node. The node data may be considered as data indicating the connection relationship of the road network. An end point of a road network such as a dead end, that is, an end point of a road that is not connected to another road may be considered as a node. In addition, the node may be provided at any location on the road other than the point where the roads are connected. The node data includes, for example, identification information for identifying the node, coordinates on the map of the node, or coordinates in the real space. Further, the node data may include information indicating a link connected to the node. A link indicates a road connecting nodes. For example, the link may be considered as a road between nodes, or a line connecting nodes. The link data is data related to the link. The link data includes, for example, link identification information that is information for identifying a link, and information (for example, node identification information) indicating nodes to which the link is connected (for example, nodes at both ends). The link data may have coordinates on the map at the end of the link or in real space. In addition, each link data may have road identification information (for example, Keihin bypass, Karasuma-dori, National Highway No. 1, etc.) such as the name and road number of the road including the link indicated by the link data. . For example, if one road is composed of a plurality of links, the same road identification information is given to the ring data of each link. Note that the link does not necessarily have to be a road delimited by adjacent nodes, and may indicate a road delimited by a set of non-adjacent nodes on one road.

  The link data may also include a cost for a plurality of road characteristic parameters, a road type as a road attribute, and the like. The road characteristic parameters include distance, travel time, charge / free distinction, ease of passage, road width, etc. Costs (distance cost, travel time cost, etc.) are determined for each road characteristic parameter. . The cost is an evaluation value used when evaluating a road to be selected, for example, when searching for a route. The cost may be considered as a value indicating a priority for route selection, for example. The cost may be considered as a score. The route search such as the Dijkstra method is performed using the cost corresponding to each link, for example. The road type means a type such as an expressway, other toll roads, national roads, and prefectural roads.

  The road information may include data indicating a road route in addition to the above node data and link data. The data indicating the road or link route is, for example, straight or curved line information along the road route or strip-like information (for example, spline curve or Bezier curve information) or arranged along the road. It may be a set of a plurality of coordinates, information on one or more vectors provided along the road, and the like. Data indicating the route of the road may be provided for each link data.

  Further, when the route search is performed without using a link or a node, the road information may include road information necessary for the route search instead of the node data or the link data. .

  The storage here is a concept including temporary storage. The map information storage unit 101 is preferably a non-volatile recording medium, but can also be realized by a volatile recording medium.

  The receiving unit 102 receives departure place information that is information indicating a departure place and destination information that is information indicating a destination. The receiving unit 102 may receive a route output instruction that is an instruction including destination information and is an instruction to output a route from the departure place to the destination. The route output instruction may have information specifying various conditions for route search. The route output instruction preferably includes departure point information and destination information. The departure place information is, for example, position information of (latitude, longitude), place name, and the like. The departure point information may be information indicating the starting point of the route search. Further, as the departure point information, information indicating a current position output by a current position information acquisition unit 107 described later at the start of a route search or the like may be used. The destination information may be information indicating the destination such as (latitude, longitude) position information, place name, and the like. The destination information may be information indicating the end point of the route search. The starting point of the route search may be considered as the starting point and the destination may be considered as the ending point. The reception here includes reception of user input using an input device such as a touch panel, a keyboard, or a mouse of the navigation device, reception by voice input, reception from an external device, reading from a recording medium, and the like. The current location information input means may be anything such as a keyboard, mouse, numeric keypad, or menu screen. The accepting unit 102 can be realized by a device driver of an input means such as a keyboard, control software for a menu screen, or the like.

  The route search unit 103 uses the road information, the departure point information, and the destination information to search for a route from the departure point to the destination, and acquires route information that is information of the searched route. For example, the route search unit 103 uses the node data and link data included in the road information stored in the map information storage unit 101 to go from the departure point indicated by the departure point information to the destination indicated by the destination information. Route search is performed. For example, the route search unit 103 searches for an optimum route using an evaluation value such as a cost associated with each route. For example, a route with a minimum accumulated cost (or a maximum) is searched. The optimum route is, for example, a route having a short required time or a route having the shortest distance, and the type of route to be obtained is determined depending on what evaluation value is used. As the route search method and algorithm used by the route search unit 103, for example, the Dijkstra method as described above, the A * algorithm, various other route search methods, route search algorithms, and the like can be used. When a route search algorithm or the like that searches for a route with a low cost is used, the route search unit 103 searches for a route with a low cost. Then, route information indicating the searched route is acquired.

  The route information may be information that can identify the route. For example, the route information is information indicating information indicating one or more roads, intersections, and branch points passing through the route in association with their passing order. The route information includes, for example, information (for example, node identification information, link identification information, and the like) indicating nodes and links that pass through each route searched by route search until reaching the destination. The route information may further include departure point information and destination information, or identification information thereof. The route information is, for example, information having departure point information, road information (node data or link data) passing from the departure point to the destination, and destination information in association with the passing order, or these This identification information is associated with the passing order. The information associated with the passage order may be information associated with information such as a number indicating the passage order, or is arranged or accumulated according to a rule specified in advance according to the passage order. May be. For example, the node and link identification information may be information stored in association with the number information indicating the passing order, or the node and link identification information may be arranged and stored in the order indicated by the passing order. It may be information.

  The route search unit 103 can usually be realized by an MPU, a memory, or the like. The processing procedure of the route search unit 103 is usually realized by software, and the software is recorded in a recording medium such as a ROM. However, it may be realized by hardware (dedicated circuit).

  The display unit 104 displays a navigation screen. The navigation screen is a screen including a map indicated by map information. The navigation screen may be a screen showing a route indicated by route information on a map. “Showing a route” means, for example, displaying the route in a display mode that can be distinguished from other parts. For example, a predetermined color or pattern line or band may be displayed on a road along the route indicated by the route information in the map indicated by the map information. It may be displayed in a different color. The navigation screen may be a screen having other operation menus necessary for navigation. Further, the navigation screen may be a screen in which information on the current location of the user is acquired from a current location information acquisition unit 107 described later and the position of the user is displayed on a map. The display unit 104 generates and displays an image of a navigation screen using map information and route information.

  The display unit 104 may or may not include a display device. The display unit 104 can be realized by display device driver software or display device driver software and a display device.

  The route information storage unit 105 stores the route information acquired by the route search unit 103. The path information storage unit 105 is preferably a non-volatile recording medium, but can also be realized by a volatile recording medium.

  The accumulation unit 106 accumulates the route information acquired by the route search unit 103 in the route information storage unit 105. The storage unit 106 can be usually realized by an MPU, a memory, or the like. The processing procedure of the storage unit 106 is usually realized by software, and the software is recorded on a recording medium such as a ROM. However, it may be realized by hardware (dedicated circuit).

  The current location information acquisition unit 107 acquires current location information that is information indicating the current location. The current location here is the current location of the portable navigation device 1. The current location information is, for example, information on the latitude and longitude of the current location. For example, the current location information acquisition unit 107 acquires information on the current position by performing the same processing as the GPS receiver. Further, the current position information may be acquired by a process similar to a process for detecting the position of a wireless LAN or a mobile phone. Further, the current position information may be acquired by other processing. For example, the current location information acquisition unit 107 acquires the current location information according to information requesting acquisition of current location information output from the reception unit 102 or the determination unit 108. Further, the position information may be acquired at a predetermined or indefinite timing designated in advance. The current location information acquisition unit 107 can be realized by a GPS receiver, for example. Moreover, it is realizable by the structure similar to the process part which performs the position detection of wireless LAN or a mobile telephone.

  The determination unit 108 determines whether the current location indicated by the current location information acquired by the current location information acquisition unit 107 satisfies a condition specified in advance for the route indicated by the route information stored in the route information storage unit 105. To do. There is no limitation on the timing or trigger at which the determination unit 108 performs this determination processing. The determination unit 108 may repeatedly perform this determination process. The determination unit 108 may repeatedly perform this determination process at, for example, a predetermined or indefinite timing designated in advance. For example, the determination unit 108 may automatically start this determination process when a route search is performed by the route search unit 103, and then repeatedly perform this process at a constant or indefinite timing. Further, this process may be started when the user gives an instruction to execute this process after the route search.

  The predesignated condition is, for example, a condition that “the current location indicated by the current location information has deviated from the route indicated by the route information”. Using such conditions, the determination unit 108 determines, for example, whether or not the current location has deviated from the route indicated by the route information. For example, the determination unit 108 determines whether or not the distance between the coordinates of the current location indicated by the current location information and the road (eg, link) indicated by the route information is equal to or greater than a predetermined distance. And when it becomes more than the distance designated beforehand, it detects that it deviated from the course. Further, for example, it is detected whether or not the current coordinates are an area on a road other than a road (for example, a link) included in the route indicated by the route information. And when it is judged that it is an area | region on roads other than the road contained in route information, having deviated from the route is detected. Then, the determination unit 108 determines that the condition “current location has deviated from the route indicated by the route information” is satisfied. Note that any processing may be used as processing for detecting that the current location deviates from the route indicated by the route information. Since the process of detecting deviation from the route indicated by the route information is known as a technique such as car navigation, a detailed description thereof is omitted here.

  In place of this condition, a condition that “the current location indicated by the current location information does not deviate from the route indicated by the route information” may be used as a predesignated condition. This is the same process as when using. In this case, when it is detected that the current location deviates from the route, the determination unit 108 may determine that the condition specified in advance is not satisfied.

  The predesignated condition is, for example, a condition that “the current location indicated by the current location information is a point indicated by the destination information”. Using such conditions, the determination unit 108 determines whether or not the current location is a point indicated by the destination information. For example, the determination unit 108 determines whether or not the current location indicated by the current location information is a point indicated by the destination information. Whether or not the current location is the point indicated by the destination information may be determined in any way. For example, the distance between the coordinates of the current location and the point indicated by the destination information is equal to or less than a predetermined distance. You may judge that it is a point. Alternatively, it may be determined that the current location is a location when the current location is a coordinate within an area having a shape and size designated in advance including the location indicated by the destination information. When it is determined that the current location is the point indicated by the destination information, it is determined that the condition “the current location indicated by the current location information is the point indicated by the destination information” is satisfied. Note that the process for determining that the current location is a point indicated by the destination information is well-known as a technique such as car navigation, and therefore detailed description thereof is omitted here.

  Instead of this condition, a condition that “the current location indicated by the current location information is not a point indicated by the destination information” may be used as a predesignated condition. Consider the same process. In this case, when it is determined that the current location is a point indicated by the destination information, the determination unit 108 may determine that this condition is not satisfied.

  In the present embodiment, in particular, determination unit 108 determines whether or not the current location satisfies a condition specified in advance for the route indicated by the route information in an operation mode other than the navigation mode. For example, the determination unit 108 may determine the route information in a so-called background when the navigation screen is not active.

  For example, in the navigation mode, the determination unit 108 once starts a determination process whether or not a predetermined condition is satisfied for the route indicated by the route information, and then the current operation mode is an operation other than the navigation mode. When the mode is changed, the above determination processing may be continued in the background or the like without ending. Alternatively, the display may be performed in the active mode other than the navigation mode, and the process in another mode and the above determination process may be switched in a time-sharing manner.

  Note that the determination unit 108 may determine whether or not the operation mode is other than the navigation mode, for example, in order to determine whether or not to determine such a route. In this case, for example, the determination as to whether or not the navigation mode is in effect may be performed at least before the determination as to whether or not a predetermined condition is satisfied. Trigger etc. do not ask. For example, the determination unit 108 may monitor the change of the operation mode, and detect the changed operation mode when the current operation mode is changed to an operation mode other than the navigation mode. Until the next change, it may be determined that this operation mode is the current operation mode. In addition, the determination unit 108 may detect any operation mode other than the navigation mode. For example, whether or not the navigation mode is set can be determined using, for example, information for managing execution of jobs, programs, tasks, and applications. The determination may be made based on whether the display unit 104 is currently displaying a navigation image.

  Further, in the present embodiment, the determination unit 108 determines when the portable navigation device 1 is in an operation mode other than the navigation mode and the route information is stored in the route information storage unit 105. The unit 108 may determine whether or not the current location satisfies a predetermined condition for the route indicated by the route information. For example, the determination unit 108 may determine the route information in a so-called background when the route information is stored in a state where the navigation screen is not active. Further, for example, when route information is not stored, it may not be determined whether or not a predetermined condition is satisfied.

  Note that the determination unit 108 may determine whether or not the operation mode is other than the navigation mode, for example, in order to determine whether or not to determine such a route. Further, it may be determined whether route information is stored in the route information storage unit 105. When these two determinations are made, the order in which the determinations are made does not matter. The determination as to whether the operation mode is other than the navigation mode is the same as described above. The determination as to whether or not the route information is stored may be performed at least until the determination as to whether or not the condition specified in advance is satisfied. Absent. For example, it may be determined whether or not the route information is stored immediately before determining whether or not a predetermined condition is satisfied.

  The determination unit 108 can usually be realized by an MPU, a memory, or the like. The processing procedure of the determination unit 108 is usually realized by software, and the software is recorded on a recording medium such as a ROM. However, it may be realized by hardware (dedicated circuit).

  The output unit 109 performs output according to the determination result of the determination unit 108. For example, when the determination unit 108 determines that the route has deviated from the route, the output unit 109 outputs information indicating that the route has deviated. The output unit 109 outputs information indicating arrival at the destination when the determination unit 108 determines that the destination is reached. Note that the determination performed by the determination unit 108 is a determination according to the route information, and the output performed by the output unit 109 according to the determination result of the determination unit 108 is referred to as a route support notification here as an example. The process for performing the route support notification is, for example, a determination process of the determination unit 108 or an output process of the output unit 109.

  For example, the output unit 109 may output vibration according to the determination result of the determination unit 108. Outputting vibration means, for example, causing the portable navigation device 1 to vibrate. For example, the output unit 109 vibrates the portable navigation device 1 when it is determined that the determination unit 108 has deviated from the route or has arrived at the destination. The pattern that generates vibration (for example, the interval at which the vibration is repeated, the number of times it is repeated, the time that is repeated, etc.) may be different depending on whether the vehicle deviates from the route or the destination. It is also good. As a configuration for vibrating a portable device, a configuration of a vibration function of a mobile phone or the like can be used.

  Further, for example, when the determination unit 108 determines that the route has deviated from the route or when it has been determined that the vehicle has arrived at the destination, the output unit 109 may output sound. The sound output may be, for example, a sound reproduction that reads a previously recorded sentence or the like, or a specific warning sound, chime, music, or the like. The output voice may be different depending on whether the voice deviates from the route and when the voice arrives at the destination, or may be the same. Further, the output of the output unit 109 may be a display such as a so-called pop-up screen including a character string indicating deviation from the route, a character string indicating arrival at the destination, and the like. The output described here is a concept including display on a display, sound output, transmission to an external device, delivery of a processing result to another program, and the like.

  Further, the output unit 109 detects the currently active operation mode (that is, the foreground operation mode) of the portable navigation mode when performing output according to the determination result of the determination unit 108, and outputs according to the operation mode. May be performed. The detection of the operation mode is, for example, detection of the type of operation mode such as a telephone mode or a mail mode. The detection of the operation mode can be determined by, for example, detecting a job, an application, a task, a program, or the like that is being executed. Performing output in accordance with the operation mode is, for example, performing output corresponding to the detected operation mode among outputs specified in advance for each operation mode. For example, the output unit 109 detects the active operation mode when the determination unit 108 determines that the vehicle has deviated from the route or has reached the destination, and the detected operation mode is the navigation mode. If so, an audio output is performed, and if not in the navigation mode, a vibration is output. Further, if the detected operation mode is the telephone mode, output such as vibration other than sound may be output, and if the detected operation mode is other operation mode, output by sound may be performed. As a result, it is possible to output the determination result so as not to interfere with the operation in the currently active operation mode.

  The output unit 109 may or may not include an output device such as a display or a speaker. The output unit 109 can be realized by output device driver software, or output device driver software and an output device.

  The output stop instruction receiving unit 110 receives an output stop instruction that is an instruction to stop the output of the determination result by the output unit 109. Here, the output of the determination result by the output unit 109 is, for example, the above-described route support notification. The output stop instruction receiving unit 110 receives an output stop instruction when, for example, an operation designated in advance by a user or the like is performed. The operation input means for giving the output stop instruction may be anything such as a numeric keypad, a keyboard, a mouse, or a menu screen. The output stop instruction receiving unit 110 can be realized by a device driver of an input unit such as a numeric keypad or a keyboard, control software for a menu screen, or the like.

  The deletion unit 111 deletes the route information from the route information storage unit 105 when receiving an output stop instruction. The deletion described here may be to completely delete the route information from the route information storage unit 105, or to add information such as a deletion flag indicating deletion to the route information. good. A deletion flag may be set. When the deletion unit 111 deletes the route information, for example, the determination processing on the route information by the determination unit 108 is not performed. The deletion unit 111 can usually be realized by an MPU, a memory, or the like. The processing procedure of the deletion unit 111 is usually realized by software, and the software is recorded on a recording medium such as a ROM. However, it may be realized by hardware (dedicated circuit).

  FIG. 2 is a flowchart showing the operation of the portable navigation device 1 according to the present embodiment. Hereinafter, the operation of the portable navigation device 1 will be described. Here, a case where an output indicating that the current location has deviated from the route and an output indicating that the destination has been reached will be described as an example of notification according to the route information. Here, for example, the default operation mode at the time of starting the portable navigation device 1 is set as the navigation mode, and the display unit 104 displays the map around the current location acquired by the current location information acquisition unit 107 from the map information storage unit 101. It may be read and displayed as a default navigation screen.

  (Step S100) The portable navigation device 1 determines whether or not the current operation mode is the navigation mode. If it is the navigation mode, the process proceeds to step S101, and if not, the process proceeds to step S106.

  (Step S101) The receiving unit 102 determines whether or not the departure point information and the destination information are received from a user or the like. If accepted, the process proceeds to step S102. If not accepted, the process proceeds to step S106. As the departure point information, information on the current location acquired by the current location information acquisition unit 107 may be received.

  (Step S102) The route search unit 103 uses the road information stored in the map information storage unit 101 to perform a route search from the departure point received in step S101 to the destination. Then, route information is acquired.

  (Step S103) The display unit 104 displays a navigation screen. For example, the map symbol information including the route indicated by the route information acquired in step S102 is acquired from the map information storage unit 101, and the color specified in advance on the route indicated by the route information on the map indicated by the acquired map symbol information. Generate and display an image of a map with lines etc.

  (Step S104) The determination unit 108 determines whether or not to perform a route support notification that is a notification corresponding to the route information acquired in step S103. For example, the determination unit 108 determines whether or not the reception unit 102 or the like has received an instruction to perform notification according to the route information from the user or the like, and determines that the route support notification is performed when the instruction is received. If not received, it is determined not to perform the route support notification. When notifying, it progresses to step S105, and when not performing, it returns to step S100.

  (Step S <b> 105) The accumulation unit 106 accumulates the route information acquired in Step S <b> 103 in the route information storage unit 105. Then, the process returns to step S100.

  (Step S106) The portable navigation device 1 determines whether an instruction to switch the operation mode is received from a user or the like. For example, this operation may be received by the receiving unit 102 or the like. If accepted, the process proceeds to step S107. If not accepted, the process proceeds to step S112.

  (Step S107) The determination unit 108 determines whether or not the current operation mode is the navigation mode. If it is the navigation mode, the process proceeds to step S108, and if not, the process proceeds to step S111.

  (Step S <b> 108) The determination unit 108 determines whether route information is stored in the route information storage unit 105. If stored, the process proceeds to step S109. If not stored, the process proceeds to step S111.

  (Step S109) The output stop instruction receiving unit 110 determines whether or not an output stop instruction that is an instruction to end performing the route support notification by the output unit 109 has been received. If accepted, the process proceeds to step S111. If not accepted, the process proceeds to step S110.

  (Step S110) The deletion unit 111 deletes the route information stored in the route information storage unit 105.

  (Step S111) The portable navigation device 1 changes the operation mode. In accordance with the change of the operation mode, the screen of the changed operation mode is displayed on the display unit 104 or the like. Then, the process returns to step S100.

  (Step S112) The portable navigation device 1 determines whether it is time to perform an operation according to the operation mode. For example, when a predesignated operation corresponding to the operation mode is received from the user or the like, it may be determined that it is time to perform the operation. If it is time to perform the operation, the process proceeds to step S114. If not, the process proceeds to step S115. If the operation mode is other than the navigation mode, the operation in step S112 and the operation in the next step S113 are performed in parallel with the processing from step S114 to step S122 described later by multitasking or the like. May be.

  (Step S113) The portable navigation device 1 performs an operation according to the operation mode. In addition, you may make it the process of step S112 and step S113 perform the process part etc. which are not illustrated in the portable navigation apparatus 1, for example. Then, the process proceeds to step S114.

  (Step S <b> 114) The determination unit 108 determines whether or not it is a timing designated in advance to perform processing for route support notification. For example, it is determined whether a predetermined time interval has elapsed. If it is time to perform processing for route support notification, the process proceeds to step S115. If not, the process returns to step S100. If it is determined in step S104 that the route support notification is not performed, this step may be omitted and the process may return to step S100.

  (Step S <b> 115) The determination unit 108 determines whether route information is stored in the route information storage unit 105. If stored, the process proceeds to step S116. If not stored, the process returns to step S100. Note that this process may be performed only at a timing designated in advance. For example, it may be performed every time a specified time interval elapses.

  (Step S116) The current location information acquisition unit 107 acquires current location information.

  (Step S117) The determination unit 108 uses the road information stored in the map information storage unit 101 to determine whether the current location has deviated from the route indicated by the route information stored in the route information storage unit 105. To do. When deviating, it progresses to step S118, and when not deviating, it progresses to step S119.

  (Step S118) The output unit 109 performs output indicating that the current location has deviated from the route indicated by the route information. Then, the process proceeds to step S121.

  (Step S119) The determination unit 108 determines whether or not the destination has been reached. Specifically, it is determined whether or not the current location indicated by the current location information is a point indicated by the destination information. If it is the point indicated by the destination information, the process proceeds to step S120, and if it is not the point indicated by the destination information, the process proceeds to step S121.

  (Step S120) The output unit 109 performs output indicating arrival at the destination. Then, the process proceeds to step S121.

  (Step S121) The output stop instruction receiving unit 110 determines whether an output stop instruction that is an instruction to end the route support notification by the output unit 109 has been received. If accepted, the process proceeds to step S122. If not accepted, the process returns to step S100.

  (Step S122) The deletion unit 111 deletes the route information stored in the route information storage unit 105. Then, the process returns to step S100.

  In the flowchart of FIG. 2, the process is terminated by powering off or a process termination interrupt.

  Hereinafter, a specific operation of the portable navigation device 1 according to the present embodiment will be described. The conceptual diagram of the portable navigation apparatus 1 is FIG. Here, as an example, it is assumed that the portable navigation device 1 includes a touch panel and also serves as a mobile phone.

  FIG. 4 is a diagram illustrating an example of map symbol information stored in the map information storage unit 101. The map information storage unit 101 stores a plurality of similar map symbol information, for example. It is assumed that the coordinates of latitude and longitude of the position indicated by the center position of the map symbol information is associated with the map symbol information in advance.

  FIG. 5 is a node management table for managing node data among road information stored in the map information storage unit 101. The node management table includes items such as “node ID” that is identification information of each node data, and “latitude and longitude” that are latitude and longitude indicated by the node.

  FIG. 6 is a link management table for managing link data among road information stored in the map information storage unit 101. The link management table includes “link ID” that is identification information of each link data, “end nodes” that are node IDs at both ends of the link data, “cost” that is the cost of the link, “road name”, and the like. Have items. The “cost” of the link is a value determined from one or more road characteristic parameters of the link. Here, for example, it is assumed that the smaller the cost value is, the shorter the link is in a substantial distance. “Road name” is road identification information. When a plurality of links are included in one road, as an example, the values of “road name” of these links are the same. However, a number indicating the connection order may be added to the end of the same road name.

  FIG. 7 is a schematic diagram in which a part of the nodes and links managed by the node management table and the link management table shown in FIGS. 5 and 6 are arranged on the map shown in FIG.

  First, when the user activates the portable navigation device 1, the portable navigation device 1 is activated as a navigation mode, the current location information acquisition unit 107 acquires current location information, and the position indicated by the current location information is the center. Assume that the display unit 104 reads out the map symbol information and the like from the map information storage unit 101 and displays a map using the map symbol information as a navigation screen.

  Next, it is assumed that the user adjusts the display area of the map for route search, and then operates the touch panel to specify the departure point S and the destination P on the map on the navigation screen. Here, specifically, if the departure point S and the destination P are tapped on the navigation screen, the tapped points are designated as the current location S and the destination P, respectively. Note that the current location may be designated on the map as the departure location S in advance.

  FIG. 8 is a diagram showing a display example in a state in which the departure point S and the destination P are designated on the navigation screen centering on the current location. This map is assumed to be a part of the map of FIG. For example, a mark 81 and a mark 82 specified in advance are displayed at the locations specified as the departure point S and the destination P.

  Then, if the user presses the “decision” button 83 for starting the route search, the reception unit 102 displays the coordinates of the departure point S and the destination P designated on the map (here, latitude and longitude). To get. Here, as an example, the coordinates on the link closest to the position specified on the map are acquired as the coordinates of the departure point S and the destination P. Here, the coordinates of the departure point S and the destination P are (xs, ys) and (xp, yp), and are the coordinates on the link “L3” and the link “L10”, respectively.

  Then, the route from the departure point S to the destination P is searched using the link data and the node data as shown in FIGS. As a route searching method, for example, the Dijkstra method or the like is used. As a result of the search, route information is acquired. A detailed description of the route information acquisition method is omitted here.

  FIG. 9 is a diagram illustrating an example of route information acquired by the route search unit 103. Here, as route information, the coordinates and link IDs of both ends of a link passing from the starting point S (xs, ys) to the destination P (xp, yp) are associated with information indicating the passing order. Yes. “Start” indicates a point entering each link, and “End” indicates a point exiting each link. Note that the coordinates of the start of the link passing through the starting point S and the coordinates of the end of the link passing through the destination P are the starting point S (xs, ys) and the destination P (xp, yp), respectively.

  Then, the display unit 104 displays a navigation screen including a map in which lines of a color designated in advance are arranged on the road corresponding to the route searched here.

  FIG. 10 is a display example of a navigation screen showing a route search result by the display unit 104.

  Here, as shown in FIG. 10, a “search for route support” button 10 for receiving an instruction to start processing for performing route support notification corresponding to the route information indicating the route is displayed. It shall be displayed.

  Then, if the user presses the “perform route support notification” button 10, the route information as shown in FIG. 9 is accumulated in the route information storage unit 105 in accordance with this operation.

  The determination unit 108 determines whether or not the route information is stored in the route information storage unit 105 at every predetermined time interval (for example, every 30 seconds). Judgment processing is performed. Specifically, the determination unit 108 issues an instruction to the current location information acquisition unit 107 to request acquisition of current location information, and acquires the current location information acquired by the current location information acquisition unit 107 in response to this instruction. Then, using this current location information, it is determined whether or not the current location has deviated from the route indicated by the route information. And when it is judged that it has deviated, the judgment result which shows having deviated is acquired.

  When the determination unit 108 obtains a determination result indicating that the current location deviates from the route, the output unit 109 performs output indicating that the route deviates. Here, for example, voice output such as “Depart from the route. Check the correct route.” Is performed.

  Further, it is assumed that the current location does not deviate from the route, and the determination unit 108 determines that the current location is the point (xp, yp) indicated by the destination information included in the route information. For example, assume that it is determined that the current location is located within a radius of 10 meters from the destination. In this case, the determination unit 108 outputs a determination result indicating arrival at the destination, and the output unit 109 outputs a voice such as “arrived at the destination” indicating arrival at the destination. I do.

  Here, it is assumed that before the user arrives at the destination, the user operates the touch panel or the like to switch the operation mode of the portable navigation device to a telephone mode that is a mode that functions as a mobile phone. In response to this operation, first, the determination unit 108 determines whether or not the current operation mode before the operation mode switching is the navigation mode. Here, since the navigation mode is set, the determination unit 108 determines whether route information is stored in the route information storage unit 105. Here, since the route information is stored, the output cancellation instruction accepting unit 110 displays a screen asking the user whether to cancel the output of the route support notification after switching the operation mode on the display unit 104. Let

  FIG. 11 is a diagram illustrating a display example of a screen asking whether to stop outputting the route support notification.

  When the user presses the “Cancel” button 11 on such a display screen, the output cancel instruction receiving unit 110 receives the output stop instruction, and in response to the reception of the output stop instruction, the deletion unit 111 receives the route information. The route information stored in the storage unit 105 is deleted. Thereby, subsequent route support notification is not performed.

  On the other hand, when the user presses the “Continue” button 12, the route information stored in the route information storage unit 105 is not deleted, and the route support notification is continued.

  Then, on the monitor of the portable navigation device 1, for example, a phone mode screen is displayed by the display unit 104.

  FIG. 12 is a diagram illustrating a display example of a telephone mode screen by the display unit 104.

  Since the current mode is the telephone mode, the portable navigation device 1 operates as a telephone at the timing when the processing in the telephone mode is performed.

  In addition, at the timing when the portable navigation device 1 performs the route support notification, whether the route information is stored in the route information storage unit 105 while the display of the portable navigation device 1 remains in the telephone mode is displayed. to decide. If the route information is stored, the route support notification process similar to the above is performed while the telephone mode is displayed. Specifically, the current location information is acquired from the current location information acquisition unit 107, and it is determined whether or not the acquired current location information deviates from the route indicated by the route information. "Check the correct route." Further, it is determined whether or not the current location is a location indicated by the destination information included in the route information. If the current location is the location indicated by the destination information, the output unit 109 indicates “arrived at the destination” or the like. Perform audio output.

  The operation for performing the route support notification may be processed in parallel in the background with respect to the operation in the telephone mode by multitasking or the like.

  Further, in this specific example, a screen asking the user whether or not to stop outputting the route support notification in accordance with a user-specified operation or the like is displayed on the display unit 104 as in FIG. Is done. When the user presses a cancel button or the like, the output stop instruction receiving unit 110 receives the output stop instruction, and the deletion unit 111 is stored in the route information storage unit 105 in response to the output stop instruction. Delete the existing route information. Thereby, subsequent route support notification is not performed.

  In this specific example, the case where the navigation mode and the telephone mode are switched has been described as an example, but the operation mode switched from the navigation mode may be any operation mode. Further, the navigation mode and a plurality of other operation modes may be switched.

  As described above, according to the present embodiment, it is possible to determine whether or not the route indicated by the route information satisfies a predetermined condition even in a mode other than the navigation mode, and output the determination result. Therefore, it is possible to appropriately notify the user of the movement status of the user moving along the searched route.

  In the present embodiment, in the navigation mode, the route information obtained by the route search is held in a volatile recording medium such as a buffer or RAM, and at the time of switching the operation mode. The path information may be stored in a non-volatile recording medium such as a memory card or a hard disk so that the capacity of the volatile recording medium is released. By adopting such a configuration, when the operation mode is other than the navigation mode, the capacity of the volatile recording medium, which is relatively high speed, is allocated to a larger number of running applications and tasks, etc. Processing can be performed. Also, in the portable navigation device 1, unlike a car navigation device or the like, the moving distance within a certain time is very slow, and the route support notification processing performed in the background or the like is also performed on the screen. Since the screen is not displayed, the route support notification processing in a mode other than the navigation mode does not require such a high-speed processing. Therefore, even if the route information is stored on a relatively low-speed recording medium, the actual processing speed As a result, almost no problems arise.

  Further, in the present embodiment, when the operation mode of the portable navigation device 1 is the navigation mode, a predetermined event such as an event that a call is received or an event that an e-mail arrives occurs. In this case, the operation mode is automatically switched from the navigation mode to the operation mode such as the telephone mode or the mail mode corresponding to the event, and the determination process by the determination unit 108 is executed in the background as described above. You may do it. In this way, the route support notification process executed in the navigation mode can be continuously performed without the user switching consciously.

  In addition, the software which implement | achieves the portable navigation apparatus in each said embodiment is the following programs. That is, this program is information related to a map, and includes a map information storage unit that stores map information having road information that is information about a road indicated by the map, and a route information storage unit that stores route information. A computer that can be accessed by using departure point information that is information indicating a departure point, a reception unit that receives destination information that is information indicating a destination, and road information, departure point information, and destination information. A route search unit that searches for a route from the place to the destination and acquires route information that is information of the searched route, a display unit that displays a navigation screen including a map indicated by the map information, and a route search unit The route information stored in the route information storage unit, the current location information acquisition unit that acquires current location information that is information indicating the current location, and the current location indicated by the current location information And a program for causing the determination unit to function as an output unit that performs output according to the determination result of the determination unit. A program for determining whether the current location satisfies a condition specified in advance for the route indicated by the route information in one or more operation modes that do not display the navigation screen other than the navigation mode that is the operation mode to be displayed. .

  In the program, the functions realized by the program do not include functions that can be realized only by hardware. For example, a function that can be realized only by hardware such as a modem or an interface card in an acquisition unit that acquires information or an output unit that outputs information is not included in the function realized by the program.

  FIG. 13 is a schematic diagram showing an example of the external appearance of a computer that executes the program and realizes the portable navigation device according to the embodiment. The above-described embodiment can be realized by computer hardware and a computer program executed on the computer hardware.

  In FIG. 13, a computer system 900 includes a computer 901 including a CD-ROM (Compact Disk Read Only Memory) drive 905, an FD (Floppy (registered trademark) Disk) drive 906, a keyboard 902, a mouse 903, a monitor 904, and the like. Is provided.

  FIG. 14 is a diagram showing an internal configuration of the computer system 900. In FIG. 14, in addition to the CD-ROM drive 905 and the FD drive 906, a computer 901 is connected to an MPU (Micro Processing Unit) 911, a ROM 912 for storing a program such as a bootup program, and the MPU 911. A RAM (Random Access Memory) 913 that temporarily stores program instructions and provides a temporary storage space, a hard disk 914 that stores application programs, system programs, and data, and an MPU 911 and a ROM 912 are interconnected. And a bus 915. The computer 901 may include a network card (not shown) that provides connection to the LAN.

  A program for causing the computer system 900 to execute the functions of the portable navigation device and the like according to the above embodiment is stored in the CD-ROM 921 or the FD 922, inserted into the CD-ROM drive 905 or the FD drive 906, and the hard disk 914. May be forwarded to. Instead, the program may be transmitted to the computer 901 via a network (not shown) and stored in the hard disk 914. The program is loaded into the RAM 913 when executed. The program may be loaded directly from the CD-ROM 921, the FD 922, or the network.

  The program does not necessarily include an operating system (OS) or a third-party program that causes the computer 901 to execute the functions of the portable navigation device according to the above embodiment. The program may include only a part of an instruction that calls an appropriate function (module) in a controlled manner and obtains a desired result. How the computer system 900 operates is well known and will not be described in detail.

  The present invention is not limited to the above-described embodiments, and various modifications are possible, and it goes without saying that these are also included in the scope of the present invention.

  As described above, the portable navigation device according to the present invention is suitable as a portable navigation device capable of searching for a route, and particularly useful as a portable navigation device capable of operating in an operation mode other than the navigation mode. .

DESCRIPTION OF SYMBOLS 1 Portable navigation apparatus 101 Map information storage part 102 Reception part 103 Route search part 104 Display part 105 Route information storage part 106 Accumulation part 107 Present location information acquisition part 108 Judgment part 109 Output part 110 Output cancellation instruction | indication reception part

  111 Deletion part

Claims (9)

A map information storage unit for storing map information having road information, which is information related to a map and road information indicated by the map;
A reception unit that receives departure point information that is information indicating a departure point, and destination information that is information indicating a destination;
A route search unit that searches for a route from the departure point to the destination using the road information, the departure point information, and the destination information, and acquires route information that is information of the searched route,
A display unit for displaying a navigation screen including a map indicated by the map information;
A route information storage unit for storing the route information acquired by the route search unit;
An accumulation unit that accumulates the route information acquired by the route search unit in the route information storage unit;
A current location information acquisition unit for acquiring current location information that is information indicating the current location;
Current position indicated by the current position information is a pre-specified condition for the route to the route information indicates a condition that deviates from the path, or whether it meets the condition that the destination information is point indicated A judgment unit for judging;
A portable navigation device comprising an output unit that performs output according to a determination result of the determination unit,
The portable navigation device has a navigation mode that is an operation mode for displaying a navigation screen, and one or more operation modes for displaying another screen without displaying the navigation screen,
The determination unit is a portable navigation device that determines whether a current location satisfies a condition specified in advance for a route indicated by the route information in an operation mode in which a screen other than the navigation mode is displayed . In the case where the portable navigation device is in an operation mode other than the navigation mode, and the route information is stored in the route information storage unit, the determination unit is configured to display the route indicated by the route information. The portable navigation device according to claim 1, wherein it is determined whether or not a condition specified in advance is satisfied. An output stop instruction receiving unit that receives an output stop instruction that is an instruction to stop the output of the determination result by the output unit;
The portable navigation device according to claim 2, further comprising: a deletion unit that deletes route information from the route information storage unit when the output stop instruction is received. The determination unit determines whether the current location has deviated from the route indicated by the route information,
The portable navigation device according to any one of claims 1 to 3, wherein the output unit outputs information indicating a departure from a route when the determination unit determines that the route has deviated from the route. The determination unit determines whether the current location is a point indicated by the destination information,
The portable navigation device according to claim 1, wherein the output unit outputs information indicating arrival at a destination when the determination unit determines that the destination is a destination. The portable navigation device according to claim 1, wherein the output unit outputs vibration according to a determination result of the determination unit. The portable navigation device according to claim 1, wherein the output unit outputs a sound according to a determination result of the determination unit. Map information storage unit for storing map information including road information that is information about a map and road information indicated by the map, a reception unit, a route search unit, a display unit, and the route search unit A portable navigation method performed using a route information storage unit, a storage unit, a current location information acquisition unit, a determination unit, and an output unit in which the route information is stored,
A receiving step for receiving the departure point information, which is information indicating a departure point, and the destination information, which is information indicating a destination;
A route search in which the route search unit searches for a route from the departure point to the destination using the road information, the departure point information, and the destination information, and acquires route information that is information on the searched route. Steps,
A display step in which the display unit displays a navigation screen including a map indicated by the map information;
An accumulation step in which the accumulation unit accumulates the route information acquired in the route search step in the route information storage unit;
The current location information acquisition unit acquires current location information that is information indicating the current location;
The determination unit determines that the current location indicated by the current location information is a condition specified in advance with respect to the route indicated by the route information, a condition that the current location has deviated from the route, or a condition indicated by destination information. A determination step for determining whether or not to satisfy,
The output unit includes an output step of performing output according to the determination result of the determination step;
A navigation mode that is an operation mode for displaying a navigation screen, and one or more operation modes for displaying other screens without displaying the navigation screen,
In the one or more operation modes in which another screen is displayed without a navigation screen other than the navigation mode that is an operation mode for displaying a navigation screen, the determination step is performed in advance with respect to a route indicated by the route information. A portable navigation method for determining whether specified conditions are met. A computer accessible to a map information storage unit that stores map information including road information that is information about a map and road information that is indicated by a map, and a route information storage unit that stores route information.
A reception unit that receives departure point information that is information indicating a departure point, and destination information that is information indicating a destination;
A route search unit that searches for a route from the departure point to the destination using the road information, the departure point information, and the destination information, and acquires route information that is information of the searched route,
A display unit for displaying a navigation screen including a map indicated by the map information;
An accumulation unit that accumulates the route information acquired by the route search unit in the route information storage unit;
A current location information acquisition unit for acquiring current location information that is information indicating the current location;
Current position indicated by the current position information is a pre-specified condition for the route to the route information indicates a condition that deviates from the path, or whether it meets the condition that the destination information is point indicated A judgment unit for judging;
A program for functioning as an output unit that performs output according to the determination result of the determination unit,
In the one or more operation modes that display other screens without displaying the navigation screen, other than the navigation mode that is the operation mode for displaying the navigation screen, the determination unit is configured to display the current location relative to the route indicated by the route information A program that determines whether or not a predetermined condition is satisfied.

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