JP2012068130A - Navigation device and navigation program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel searching method as a method of searching for a guiding object.SOLUTION: A navigation device 100 includes a POI information storage unit 22 for storing POI information containing the position of a guiding object and an incident name indicating an incident relating to the guiding object (e.g., POI), and a history information storage unit 23 for storing the occurrence time of the incident and the details of the incident as history information. Input of time (e.g., year) for searching for history information is received, history information indicating an incident that occurred at the received time is searched for, and POI information containing the name of the incident indicated by the retrieved history information is searched for from pieces of POI information. At least a part of the retrieved POI information and history information (e.g., incident name) is output in a form recognizable by a user of the navigation device 100 (e.g., a history information display screen is displayed).

Description

  The present invention relates to a navigation device that displays a current position of a moving body on a map on a display screen of a display device and guides the moving body to a destination, and a navigation program for controlling the operation of the navigation device.

  Conventionally, a navigation system is known as a system for supporting the arrival of a moving body such as a vehicle or a human at a destination. For example, this navigation system derives the current position of the moving object by GPS (Global Positioning System), obtains a recommended moving route by route search processing based on the current position information of the moving object and road map information, and this recommended Based on the travel route, automatic travel route guidance (hereinafter referred to as “route guidance”) is performed.

  Many of such navigation devices have a function for searching for a guidance object to be guided by the navigation device. For example, one or more areas that pass through a guidance route to a destination are acquired. Display a list of regions to prompt the user to select a predetermined region, display a list of information types to prompt the user to select the type of information to search, and guide the selected region There is a configuration in which selected information is searched within a predetermined search range from a route, and information in an area obtained by the search is displayed (Patent Document 1).

JP 2006-313156 A

  However, in such a navigation device, a method of searching for a guidance object existing within a predetermined range based on the recommended movement route derived by the navigation device or the current position of the moving object, or a guidance object using a search keyword Most of the methods are to search for information related to objects (including information stored in a storage medium included in the navigation device and information stored in an external storage device that can communicate via a communication network). There was a problem of calling.

  In addition, the conventional search method may not be able to search for guidance objects that meet the user's wishes, such as when a recommended travel route is not derived or when an appropriate search keyword cannot be determined. there were.

  In order to solve the above-described problems, an object of the present invention is to realize a new retrieval method as a guidance object retrieval method.

  A navigation device according to the present invention is a navigation device that displays a current position of a moving body on a map on a display screen of a display device and guides the moving body to a destination. POI information storage means for storing POI information including an event name indicating a related event, history information storage means for storing history information including the time when the event occurred and detailed contents of the event, and the history information Time input receiving means for receiving an input of time for searching, history information searching means for searching for historical information indicating an event that occurred at the time received by the time input receiving means, and the history information among the POI information POI information retrieval means for retrieving POI information including the event name indicated by the history information retrieved by the retrieval means, and retrieval by the POI information retrieval means Characterized in that it comprises a and an information output means for the user to output a state to be recognized of the navigation device at least a portion of the POI information and the history information.

  With the above configuration, a new search method can be realized as a guide object search method.

  The information output means creates an event explanation screen showing the event name associated with the POI information or the detailed content of the event indicated by the history information, and the POI information related to the event name or the detailed content of the event. The event explanation screen creating means and the event explanation screen displaying means for displaying the event explanation screen created by the event explanation screen creating means on the display surface of the display device may be used.

  The POI information included in the search range specified by the search range specifying means indicates the search range specifying means for specifying the search range of the POI information, the POI information storage means, and the history information storage means. Search range related time specifying means for specifying the time when an event related to the guidance object has occurred, and time display means for selectively displaying the time specified by the search range related time specifying means on the display screen of the display device The time input accepting means may be configured to accept the selection of the time displayed by the time display means as an input of the time for searching the history information.

  Road map information storage means for storing map information including road information, and current position specifying means for specifying the current position of the mobile body, wherein the search range specifying means is the movement specified by the current position specifying means. A predetermined range on the map based on the current position of the body may be specified as the POI information search range.

  Including a recommended travel route deriving unit for deriving a recommended travel route from the current position of the moving object to the destination, wherein the POI information search unit is located within a predetermined range from the recommended travel route derived by the recommended travel route deriving unit. The POI information indicating the guidance object to be searched may be searched.

  The navigation program of the present invention is a navigation program for controlling the operation of the navigation device so as to display the current position of the moving body on a map on the display screen of the display device and guide the moving body to the destination. A time input receiving process for receiving an input of a time for searching the history information stored in the history information storage means for storing the history information including the time when the event occurred and the detailed contents of the event in the navigation device; POI information including history information search processing for searching for history information indicating an event that occurred at the time received in the time input reception processing, and an event name indicating an event related to the position of the guide object and the event related to the guide object Among the POI information stored in the POI information storage means for storing the history information, the history information searched in the history information search process is A user of the navigation device can recognize a POI information search process for searching for POI information including an event name indicating an event, and at least a part of the POI information searched in the POI information search process and the history information. This is for executing information output processing to be output in a state.

  According to the present invention, a new search method can be realized as a guide object search method.

It is a block diagram which shows the example of a structure of a navigation apparatus. It is explanatory drawing for demonstrating the example of a structure of a control part and a memory | storage part. It is explanatory drawing which shows the example of the storage state of POI information. It is explanatory drawing which shows the example of the storage state of historical information. It is a flowchart which shows the example of a navigation process. It is explanatory drawing which shows the example of a time selection screen. It is explanatory drawing which shows the example of a historical information selection screen. It is explanatory drawing which shows the example of an event description screen. It is explanatory drawing which shows the example of a recommended movement path | route display screen.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an example of the configuration of a navigation device 100 according to an embodiment of the present invention. The navigation device 100 is, for example, a mobile personal computer, PND (Portable
Navigation device) or an information processing apparatus such as a dedicated device. In this example, as shown in FIG. 1, the navigation device 100 includes a control unit 10, a storage unit 20, a memory 30, a display unit 40, a sensor unit 50, a communication unit 60, and an input unit 70. including. Hereinafter, a case where the navigation device 100 is mounted on a vehicle that is a moving body will be described.

  Although not shown, the navigation device 100 includes a CPU (Central Processing Unit), a program storage unit, an OS (Operating System), and the like.

  The control unit 10 is configured by, for example, a CPU (Central Processing Unit), and in accordance with a computer program stored in the storage unit 20 (a computer program for controlling the operation of the navigation device 100, including a navigation program), the navigation device. Controls each element of 100, and provides route search function, route guidance function, service information (store information such as gas station, convenience store, ramen store, hotel / ryokan, POI such as famous facility information, resort information) It has various functions for executing various processes including an information retrieval function for retrieving (Point Of Interest) information). Note that these various functions are realized by known techniques included in general navigation devices. The configuration of the control unit 10 will be described in detail later.

  The storage unit 20 is a storage medium that includes a ROM, a RAM, and the like, and stores various computer programs used by the navigation device 100. The storage unit 20 is a storage medium that stores various information necessary for a navigation device such as map information. The configuration of the storage unit 20 will be described in detail later.

  The memory 30 is a storage medium that temporarily holds various types of information processed by the control unit 10 and is configured by a semiconductor storage device such as a RAM.

  The output unit 40 is a device that outputs information related to route guidance, and includes, for example, an image display device (display device, monitor) that displays image information and a sound output device (speaker device) that outputs sound information. The image display device displays road map information and current vehicle position information on the display screen, and also displays a recommended movement route to the destination on the display screen, thereby visually informing the route and the like. . The voice output device outputs various voices based on the various voice information, so that the route of the moving route (for example, “turn right at 100 m”) or information related to the moving route (for example, road) Name, traffic regulation information, introduction of nearby recommended facilities, etc.).

  The sensor unit 50 has a function of measuring the current position of the navigation device 100 (that is, the current position of the user). For example, the sensor unit 50 receives a GPS signal transmitted from a GPS satellite, and positions based on the GPS signal. A GPS sensor that measures the amount of movement, a speed sensor that measures the amount of movement (distance) from the initial position, a gyro sensor that measures the traveling (movement) direction, and the like.

  A GPS sensor is a so-called GPS receiver, receives a GPS signal radiated from a GPS satellite, measures a distance (pseudo distance) between the GPS satellite and the GPS receiver itself, and receives a plurality of satellites. Are simultaneously received to calculate the current position (GPS positioning solution) of the GPS receiver itself.

  In addition to the GPS receiver (antenna) that receives the GPS signal, the sensor unit 50 has a function of performing processing such as decoding of the received GPS signal and notifying the control unit 10.

  The communication unit 60 is connected to a communication network such as the Internet wirelessly or by wire, and has a function for transmitting / receiving information to / from an external device such as a management server connected to the communication network.

  The input unit 70 has a function of accepting various instructions to the control unit 10 from the user. In this example, the input unit 70 includes, for example, operation buttons displayed on the display screen of the display unit 40.

  FIG. 2 is an explanatory diagram for explaining an example of the configuration of the control unit 10 and the storage unit 20 in this example. As shown in FIG. 2, the control unit 10 includes a route search unit 11, a vehicle position specifying unit 12, a route guidance unit 13, an information search unit 14, and a screen creation unit 15.

  The route search unit 11 derives a recommended travel route from the departure position (for example, the current position of the vehicle or the position input by the user) to the destination (for example, the position indicated by the address input by the user). I do. In the route search process, for example, input of information indicating the departure place (for example, the current position of the vehicle) and the destination is received via the input unit 70, and the departure is performed with reference to the road information based on the received information. A recommended travel route from the ground to the destination is derived, and processing for generating a travel route surrounding map including a road map including the derived recommended travel route is performed. In addition, since a well-known technique is used about a route search process, detailed description here is abbreviate | omitted. In addition, information necessary for route search processing, for example, map information used for specifying the current position and generating a map around the moving route may be stored in the storage unit 20 in advance, or the communication unit 60 may be used. It is good also as a structure acquired from an external management server.

  The own vehicle position specifying unit 12 performs processing for specifying the current position information of the vehicle. Here, the current position is indicated by latitude and longitude, for example. For example, the vehicle position specifying unit 12 specifies current position information indicating the current position based on information notified from the sensor unit 50.

  The route guidance unit 13 performs general route guidance using the recommended travel route searched by the route search unit 11 (display of a map including a recommended travel route according to the current position of the user, voice guidance, etc.). It has a function to perform the process.

  The information search unit 14 has a function of performing processing for searching for various types of information according to a search keyword accepted by the user through the input unit 70, a search condition specified according to a predetermined operation, and the like. In this example, the case where the information search unit 14 searches for POI information and history information, which will be described later, according to the search condition will be described.

  The screen creation unit 15 generates various screens so that the user can recognize the information retrieved by the information retrieval unit 14 (for example, a time selection screen, a history information selection screen, an event explanation screen, etc. described later) And a function for performing processing for creating data to be displayed on the display screen of the unit 40.

  In this example, as shown in FIG. 2, the storage unit 20 includes a road map information storage unit 21, a POI information storage unit 22, a history information storage unit 23, and a recommended travel route information management table 24. .

  The road map information storage unit 21 is a storage medium that stores map information by dividing it into a rectangular range (hereinafter referred to as “mesh”) divided by a certain latitude width and latitude width. In addition to being stored in the road map information storage unit 21, this map information can be stored in an auxiliary storage device as a removable medium called an SD memory card, a CD-ROM, a DVD-ROM, or the like. Further, the map information may be downloaded via a communication network such as the Internet. In addition, the road map information storage unit 21 is a storage medium that manages roads by representing nodes and links as road information, and stores route configuration node information and route configuration link information for each node and link. That is, the route search unit 11 acquires information necessary for the route search process from the road map information storage unit 21. Hereinafter, the map information and the road information are appropriately referred to as “road map information”.

  The road information may be different depending on the time and the traveling direction of the vehicle. Here, in the road information in this example, the length and passage time of each link are stored as route costs. In addition, the road information has a plurality of hierarchies. In this example, the road information is for neighborhood (stores all roads), for short distance (stores roads other than narrow streets), for medium distance (prefecture roads or more). Storage) and long-distance use (stores highways and national roads). In this case, for example, hierarchical information may be set for the nodes and links constituting the road information. Thereby, the road information which is the object of the route search can be properly used depending on the route search condition. That is, for example, when the distance from the current position to the destination is a long distance, the amount of road information existing between them is enormous, so the route search process is performed using the road information set for long distance. By doing so, the processing load of the route search unit 11 can be reduced.

  The POI information storage unit 22 is a storage medium that stores POI information indicating a guidance object.

  FIG. 3 is an explanatory diagram illustrating an example of a storage state of POI information in the POI information storage unit 22. As shown in FIG. 3, the POI information in this example includes a POI-ID for uniquely identifying a guidance object such as a facility or a resort, a name of a guidance object such as a facility (a POI name), Includes address and event name.

  Here, the “event name” is associated with the guidance object in advance as identification information for specifying an event related to the guidance object. In this example, it is assumed that the name of the event is associated with at least one of the POI information stored in the POI information storage unit 22. Note that information indicating the detailed contents of the event (for example, an explanatory note explaining the details of the event) is included in the history information stored in the history information storage unit 23. Therefore, in this example, information (for example, name and position) related to the guidance target object and information indicating the details of the event are linked by the event name.

  The history information storage unit 23 is a storage medium that stores history information including the time when the event occurred and the detailed contents of the event.

  FIG. 4 is an explanatory diagram illustrating an example of a history information storage state in the history information storage unit 23. As shown in FIG. 4, the historical information in this example includes the time when an event occurred (or is assumed to have occurred), the name of the event, an attribute flag indicating the attribute of the event, and detailed content indicating the content of the event. including.

  Here, the “attribute flag” is a flag indicating an attribute to which each event belongs, and is set by, for example, a creator of history information. In this example, the attributes include “politics” to which events related to politics belong, “economy” to which events related to economics belong, and “topics” to which events that have become a hot topic of the world belong. An example is described. In addition, for example, “favorite” or the like may be included as an attribute that can be set by the user.

  Further, the “detailed content” is not limited to document data and image data as long as it indicates the content of the event, and may be, for example, voice data or URL. The “detailed content” in the history information preferably indicates the details of the event in detail, but it may be of a level that it has a larger amount of information than the event name.

  In this example, the “year” is described by taking the year, year, and year as an example, but information indicating “time” in the history information is not limited to “year”. In other words, for example, it is only necessary to be able to specify the “time” such as date, season, period classification (ancient, medieval, early modern, modern). A plurality of periods may be set for one event.

  The recommended travel route information management table 24 is a storage medium that stores the recommended travel route derived by the route search unit 11. Note that the recommended travel route information is information that is temporarily created unlike information stored in other various storage units, and in this example, a case where the recommended travel route information is stored and managed in the information management table will be described. .

  Next, the operation of the navigation device 100 of this example will be described with reference to the drawings. Note that detailed descriptions of processes not particularly related to the present invention may be omitted.

  FIG. 5 is a flowchart illustrating an example of navigation processing executed by the navigation device 100. In the navigation process, a process for presenting a destination candidate using history information and starting route guidance to the presented destination is performed.

  The navigation process in this example is started when, for example, the control unit 10 receives a display request for a time selection screen from the user A of the navigation device 100. As a method for accepting a display request for a time selection screen, for example, a method for accepting from a detailed screen of point information is conceivable. In this case, for example, a button for accepting a request to display the time selection screen may be arranged in a screen that displays various information related to the area on the map input by the user A. The method for accepting the display request for the time selection screen is not limited to this. For example, the display request for the time selection screen is displayed from a general menu screen (for example, a screen for displaying a list of functions executable by the navigation device 100). It is good also as a structure which receives.

  In the navigation process, first, the control unit 10 performs a process for displaying a time selection screen on the display screen of the output unit 40. (Step S101).

  FIG. 6 is an explanatory diagram illustrating an example of a time selection screen. As shown in FIG. 6, the time selection screen includes a year input area 101, a year input area 102, a Western calendar input area 103, a return button 104 for receiving a display request before displaying the time selection screen, It includes a search button 105 that is a button for receiving a search start request for an event that occurred in the year in which the input is received in the year input area 101 and the year input area 102 or the year input area 103.

  In this example, it is assumed that each input area included in the time selection screen is a pull-down menu method. That is, the control unit 10 can display a list of year names or the like so that the display positions of the year input area 101, the year input area 102, and the year input area 103 are pressed by the finger of the user A, for example. Then, when the display position such as the displayed year is pressed by the finger of the user A, it is recognized that the year corresponding to the pressed position is in the input state.

  Further, the input unit 70 displays various buttons in response to the display position of various buttons (for example, the search button 105 etc.) displayed on the display screen of the output unit 40 being pressed by the finger of the user A, for example. The control unit 10 is notified of the execution request for the process assigned in advance.

  When the time selection screen is displayed, the control unit 10 receives a search request for history information specifying the time (step S102). Here, for example, when “Showa” is input in the year input area 101 and “51 years” is input in the year input area 102, when the display position of the search button 105 is pressed by the finger of the user A, the control unit 10 determines that a search request for history information specifying a time has been received (Y in step S102), and the information search unit 14 uses the specified time (here, Showa 51) as a search key for history. Information is searched (step S103). In this example, the information search unit 14 also uses the year “1976” corresponding to the search key “Showa 51” as the search key.

  When the history information is searched, the control unit 10 creates a history information selection screen by the screen creation unit 15 and displays the created history information selection screen on the display screen of the output unit 40 (step S104).

  FIG. 7 is an explanatory diagram illustrating an example of a history information selection screen. As shown in FIG. 7, the history information selection screen includes a search key display area 201 for displaying a search key, a search result display area 202 for selectively displaying at least part of history information included in the search results, A return button 203 for receiving a selection screen display request and a detail display button 204 for receiving an event explanation screen display request to be described later are included.

  In this example, the screen creation unit 15 creates a history information selection screen for displaying “event name” in the history information so as to be selectable in the search result display area 202. Each event name displayed in the search result display area 202 is selected when the display position on the display screen is pressed once by the finger of the user A, for example, and is not selected when pressed similarly in the selected state. It becomes a state. In this example, as shown in FIG. 7, the screen creation unit 15 creates a history information selection screen that displays an icon (attribute icon) indicating an attribute of an event in association with the display position of the event name.

  When the history information selection screen is displayed, the control unit 10 receives a history information detail display request (step S105).

  Here, for example, when the event name “□□ Completion” displayed in the search result display area 202 is selected, when the display position of the detail display button 204 is pressed by the finger of the user A, the control unit 10 It is determined that a request for detailed display of history information has been received (Y in step S105), and history information in the state selected by the information search unit 14 (here, history with “□□ completed” set as the event name) POI information related to (information) is searched (step S106). In this example, the information search unit 14 refers to the POI information storage unit 22 and searches for POI information including “□□ completed” in the event name as POI information related to the selected history information. At this time, a configuration in which a plurality of event names can be selected may be selected, or only one event name may be selected.

  When searching for POI information related to history information, the control unit 10 creates an event explanation screen including a POI information selection area by the screen creation unit 15 and displays it on the display screen of the output unit 40 (step S107).

  FIG. 8 is an explanatory diagram showing an example of an event explanation screen. As shown in FIG. 8, the event explanation screen includes an event explanation area 301 for displaying information for explaining history information, a related POI information display area 302 for displaying at least a part of POI information related to the event, A return button 303 for receiving a display request for a history information selection screen and a map display button 204 for receiving a display request for a recommended movement route display screen, which will be described later, are included.

  Here, the event description area 301 displays the event name and the content set in the “detailed content” in the history information. When the URL is set in the detailed content, the control unit 10 may display the URL as it is, or display the website corresponding to the URL in the event explanation area 301 via the communication unit 60. It is good also as composition to do.

  Also, in the related POI information display area 302, a predetermined item (in this example, “name”) is displayed in a selectable manner from the POI information searched as POI information related to history information. Note that the name of each POI displayed in the related POI information display area is selected when the display position on the display screen is pressed once by the finger of the user A, for example, and non-displayed when pressed similarly in the selected state. Selected state.

  When the POI information selection screen is displayed, the control unit 10 accepts selection of POI information (step S108).

  Here, for example, when the display position of the map display button 304 is pressed with the finger of the user A while the name “XX Castle” displayed in the related POI information display area 302 is selected, the control unit 10 It is determined that the display request for the recommended travel route display screen has been received (Y in step S108), and the route search unit 11 derives a recommended travel route from the current position of the vehicle to the POI (step S109). At this time, a plurality of POI information (in this case, names of guidance objects) may be selectable, or only one POI information may be selected.

  When the recommended travel route is derived, the control unit 10 creates a recommended travel route display screen by the screen creation unit 15 and displays it on the display screen of the output unit 40 (step S110).

  FIG. 9 is an explanatory diagram illustrating an example of a recommended travel route display screen. As shown in FIG. 9, the recommended movement route display screen displays a current position P, a selected POI position G, a current position P, and a selected POI position G on a map around the current position of the vehicle. The recommended travel route 401 connecting the two is displayed in an identifiable manner. Further, in this example, the recommended movement route display screen has a POI name display area 402, a guidance start button 403, and a detailed information button for receiving a display request for an event explanation screen in the vicinity of the position G of the selected POI. 404 is displayed. The detailed information button 404 may accept a display request for detailed information of POI information (for example, an item of POI information set in advance as detailed information).

  When the recommended movement route display screen is displayed, the control unit 10 receives a route guidance start request (step S111). Here, when the depression of the guidance start button 404 is accepted, the control unit 10 determines that a route guidance start request has been accepted (Y in step S111), and the route guidance unit 13 uses the recommended movement route. Route guidance is started (step S112).

  In route guidance, the control unit 10 may refer to the POI information storage unit 22 and the history information storage unit 23 to guide events related to the destination POI (screen display, voice output, etc.). Good.

  When the route guidance is started, the control unit 10 determines whether or not the current position P of the vehicle has reached the destination (step S113). If it is determined that the current position P has not reached the destination (N in step S113), the control unit 10 continues route guidance according to the current position P.

  On the other hand, if it determines with the present position P of the vehicle having reached | attained the destination (Y of step S113), the control part 10 will complete | finish this process. At this time, the control unit 10 may be configured to store the guidance history (such as travel locus, travel time, history information selection history) in the storage unit 20.

  As described above, in the above-described embodiment, the current position of the moving body (for example, a vehicle) is displayed on the map on the display screen of the display device (for example, the output unit 40) to bring the moving body to the destination. The navigation device 100 that guides the POI information storage unit 22 that stores POI information including the position of the guide object and the event name indicating the event related to the guide object (for example, POI), and the time when the event occurred A history information storage unit 23 for storing history information including the detailed contents of the event, accepts an input of a time (for example, a year) for searching for the history information, and shows the event that occurred at the received time The information is searched, POI information including the event name indicating the event indicated by the searched history information is searched from the POI information, and at least a part of the searched POI information and history information ( For example, since the event name is output in a state that can be recognized by the user of the navigation device 100 (for example, a history information display screen is displayed), a new search method can be realized as a guide object search method. Will be able to.

  That is, it is possible to provide a navigation device that can search for guidance objects from events that occurred in the past.

  In addition, the search method for the guidance object can be varied, and the convenience of the navigation device can be improved. In particular, convenience for users who like history can be improved.

  Further, in the above-described embodiment, the navigation device 100 shows the event details associated with the POI information or the detailed contents of the event indicated by the history information, and the POI information related to the event name or the event details. An explanation screen (for example, an event explanation screen including the event name, details of the event, and the name of the guidance object) is created, and the created event explanation screen is displayed on the display surface of the display device (eg, the output unit 40). Since it is configured, it is possible to search for a guidance object that can be a destination from events that have occurred in the past. By searching for guidance objects from events that have occurred in the past, it is possible to search for guidance objects that are difficult to search by the conventional method of searching for guidance objects based on the schedule of events.

  Although not specifically mentioned in the above-described embodiment, the navigation device 100 specifies the search range of the POI information and refers to the POI information storage unit 22 and the history information storage unit 23 to specify the search range. The time at which an event related to the guidance object indicated by the POI information included in the event occurred is specified, the specified time is displayed on the display screen of the display device (for example, the output unit 40) in a selectable manner, and the displayed time is selected. It is good also as a structure which receives as input of the time for searching historical information.

  That is, for example, when displaying a time selection screen (see FIG. 6), POI information within a predetermined distance from the current position of the vehicle is specified as a search range, and the event name included in the POI information included in the specified search range is handled. Specify the time when the historical information occurred, and create the year input area 101, the year input area 102, and the year input area 103 on the time selection screen so that only the specified time can be selected, and the time selection created It is good also as a structure which displays a screen. By adopting such a configuration, it becomes possible to search the past of a point or an area from current information such as the current position, and to add new added value to the search function.

  Although not particularly mentioned in the above-described embodiment, the navigation device 100 includes a road map information storage unit 21 that stores map information including road information, and specifies the current position of the mobile body (for example, a vehicle). A predetermined range on the map based on the current position of the identified mobile object may be specified as the POI information search range. By adopting such a configuration, for example, it is possible to realize a new operation method of searching for a guidance object while examining how the place or facility where the user is now has changed over time. become able to.

  Although not specifically mentioned in the above-described embodiment, the navigation device 100 derives a recommended movement route from the current position of the moving body (for example, a vehicle) to the destination, and a predetermined range from the derived recommended movement route. It is good also as a structure which searches the POI information which shows the guidance target object located inside.

  In the above-described embodiment, the case where the information searched by the information search unit 14 is made recognizable by the screen creation unit 15 has been described. For example, the content of the search result (for example, the event name or The details of the event) can be recognized by the user by creating and outputting the information (for example, information indicating the audio output time and volume) when the searched information has audio data. It is good also as a structure made into a state.

  Although not particularly mentioned in the above-described embodiment, the navigation device 100 superimposes an image indicating an event that occurred at the time input by the user (for example, an icon corresponding to the attribute of the event) on the map. It is good also as a structure displayed by doing. In this case, for example, the navigation device 100 may be configured to arrange an image indicating an event on the map based on the attribute of the event and the position of the guidance object related to the event. Further, the outgoing navigation device 100 displays an image indicating an event in a selectable manner, and in response to the image being selected by the user, for example, detailed content of the event corresponding to the selected image and related POI information. The event detail screen shown (see FIG. 8) may be displayed.

  INDUSTRIAL APPLICABILITY The present invention is industrially useful in an industry that handles devices that provide vehicle route guidance, and is also useful in the electrical appliance market such as a car navigation device that can output sound.

DESCRIPTION OF SYMBOLS 10 Control part 11 Route search part 12 Own vehicle position specific part 13 Route guidance part 14 Information search part 15 Screen creation part 20 Storage part 21 Road map information storage part 22 POI information storage part 23 History information storage part 24 Recommended travel route information management Table 30 Memory 40 Output unit 50 Sensor unit 60 Communication unit 70 Input unit

Claims (6)

A navigation device that displays a current position of a moving object on a map on a display screen of a display device and guides the moving object to a destination,
POI information storage means for storing POI information including a position of the guidance object and an event name indicating an event related to the guidance object;
Historical information storage means for storing historical information including the time when the event occurred and the details of the event;
Time input accepting means for accepting an input of the time for searching the history information;
History information search means for searching for history information indicating an event that occurred at the time received by the time input reception means;
Of the POI information, POI information search means for searching for POI information including an event name indicating an event indicated by the history information searched by the history information search means;
A navigation apparatus comprising: information output means for outputting at least a part of the POI information searched by the POI information search means and the history information in a state that can be recognized by a user of the navigation apparatus. The information output means includes
An event explanation screen creating means for creating an event explanation screen showing the event name associated with the POI information or the detailed content of the event indicated by the history information and the POI information related to the event name or the detailed content of the event; ,
The navigation apparatus according to claim 1, further comprising event explanation screen display means for displaying the event explanation screen created by the event explanation screen creation means on the display surface of the display device. Search range specifying means for specifying the search range of the POI information;
A search for specifying a time when an event related to the guidance object indicated by the POI information included in the search range specified by the search range specifying unit occurs with reference to the POI information storage unit and the history information storage unit Range-related time identification means,
A time display means for selectively displaying the time specified by the search range related time specifying means on the display screen of the display device,
The navigation apparatus according to claim 1, wherein the time input receiving unit receives the selection of the time displayed by the time display unit as an input of a time for searching the history information. Road map information storage means for storing map information including road information;
Current position specifying means for specifying the current position of the mobile body,
The navigation device according to claim 3, wherein the search range specifying unit specifies a predetermined range on a map based on the current position of the mobile body specified by the current position specifying unit as a search range of the POI information. Including a recommended travel route deriving means for deriving a recommended travel route from the current position of the moving object to the destination;
5. The POI information search unit searches for POI information indicating a guidance object located within a predetermined range from the recommended travel route derived by the recommended travel route deriving unit. 5. Navigation device. A navigation program for controlling the operation of a navigation device to display a current position of a moving body on a map on a display screen of a display device and to guide the moving body to a destination,
In the navigation device,
A time input reception process for receiving an input of a time for searching for historical information stored in the historical information storage means for storing historical information including the time when the event occurred and the detailed content of the event;
Historical information search processing for searching historical information indicating an event that occurred at the time received in the time input reception processing;
Of the POI information stored in the POI information storage means for storing the POI information including the position of the guidance object and the event name indicating the event related to the guidance object, the history information retrieved by the history information retrieval process. POI information search processing for searching for POI information including an event name indicating an event indicated by
A navigation program for executing an information output process for outputting at least a part of the POI information searched in the POI information search process and the history information in a state that can be recognized by a user of the navigation device.

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