JP2012167970A - Navigation device and navigation program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation device which can effectively guide a user to a recommended object according to movement of the user and a scale of a displayed map.SOLUTION: A navigation device 100 displaying a current position of a user A on a map on a display screen comprises a road map information storage unit 21 and a POI information storage unit 22. The navigation device 100 is configured to: locate a current position of the user A based on road map information; determine a search range for POIs (a range of the displayed map, for example) based on the located current position; search for POI information indicating the POIs existing within the determined search range; create output information indicating output contents and output order of a predetermined number of pieces or more pieces of POI information and positions of the POIs on the map indicated by the respective pieces of POI information, on determining that the number of pieces of the obtained POI information is equal to or more than a predetermined number; display predetermined images at positions of POIs on the map according to the output order based on the created output information; and search for POI information anew according to movement of the user A to a position that meets predetermined conditions.

Description

  The present invention relates to a navigation device that displays a user's current position on a map on a display screen of a display device and guides the user to a destination, and a navigation program for causing the navigation device to control operations.

  Conventionally, a navigation device is known as a device for supporting the arrival of a moving body such as a vehicle or a human at a destination. For example, the navigation device 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 the road map information, and performs the recommended operation. Based on the travel route, automatic travel route guidance (hereinafter referred to as “route guidance”) is performed.

  Some of such navigation devices have a function of guiding a property to a user (that is, presenting information related to the property) independently of a user operation.

  Such navigation devices include, for example, a device that updates information about facilities and displays information about the updated facilities every time it passes through the facility closest to the current position (Patent Document 1).

JP 2002-357432 A

  However, there are few types of navigation devices that have a function of changing the property to be guided (recommended property, an example of POI) one after another with movement, for example, a display screen according to the number of properties to be guided There has been a problem that sufficient consideration has not been made with respect to a method of providing information to the user, for example, the visibility of the user has deteriorated.

  In order to solve the above-described problems, an object of the present invention is to more effectively guide recommended properties in accordance with a user's movement and a display map scale.

  A navigation device of the present invention is a navigation device that displays a user's current position on a map on a display screen of a display device, and includes road map information storage means for storing road map information, and POI information indicating a guidance object. POI information storage means for storing, current position specifying means for specifying the current position of the user based on the road map information, and a POI search range based on the current position specified by the current position specifying means Search range specifying means, POI information search means for searching for POI information indicating a POI located within the search range specified by the search range specifying means, and a predetermined number of POI information searched by the POI information search means The number of information determining means for determining whether or not there is more than the predetermined number of POI information. Then, output information creation means for creating output information indicating the output contents of the POI information of the predetermined number or more, the output order, and the position of the POI indicated by each POI information on the map based on a predetermined creation criterion And POI information output means for displaying a predetermined image at the position of the POI on the map according to the output order based on the output information created by the output information creation means, and the user specifies the current position Movement determining means for determining whether or not the position has been moved to a position satisfying a predetermined condition with respect to the current position specified by the means, wherein the POI information search means is configured to move the user to a position that satisfies the predetermined condition by the movement determining means. It is characterized in that POI information is newly searched for when it has been determined that it has moved.

  With the above configuration, recommended properties can be more effectively guided in accordance with the movement of the user and the display map scale.

  It includes a preference information storage unit that stores preference information indicating the user's preference, and the output information creation unit is configured to determine an output content or an output order for each POI information based on the preference information. Good.

  Further, the navigation program of the present invention is a navigation program for causing the navigation device to control the operation so as to display the current position of the user on the map on the display screen of the display device. A current position specifying process for specifying the current position of the user based on the road map information stored in the road map information storing means, and a POI search based on the current position specified in the current position specifying process A search range specifying process for specifying a range and POI information stored in POI information storage means for storing POI information indicating a guidance object are located within the search range specified in the search range specifying process. POI information retrieval processing for retrieving POI information indicating the POI, and PO retrieved by the POI information retrieval processing An information number determination process for determining whether there is a predetermined number or more of information, and an output content of the POI information of a predetermined number or more in response to determining that the POI information is equal to or more than a predetermined number in the information number determination process Output information creation processing for creating output information indicating the output order and the position of the POI indicated by each POI information on the map based on a predetermined creation criterion, and output information created by the output information creation processing And a POI information output process for displaying a predetermined image at the position of the POI on the map in accordance with the output order and outputting the POI information, and the user is specified in the current position specifying process. A movement determination process for determining whether the user has moved to a position that satisfies a predetermined condition with respect to the current position. In the POI information search process, the user determines the predetermined condition in the movement determination process. This is to execute a process for newly searching for POI information in response to the determination that the position has been moved to a position satisfying the above.

  According to the present invention, it is possible to guide recommended properties more effectively in accordance with the movement of the user.

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 output information. It is a flowchart which shows the example of a navigation process. It is explanatory drawing which shows the example of a POI information output 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. Hereinafter, the case where the navigation apparatus 100 is carried by the user will be described.

  As illustrated in FIG. 1, the navigation device 100 includes a control unit 10, a storage unit 20, a memory 30, an output unit 40, a sensor unit 50, a communication unit 60, and an input unit 70. 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, and each component of the navigation device 100 is configured according to a computer program (a computer program for causing the navigation device 100 to perform operation control and includes a navigation program) stored in the storage unit 20. Central control of the elements, route search function, route guidance function, service information (store information such as gas stations, convenience stores, ramen stores, hotels and inns, POI (Point Of Interest) information such as famous facility information, resort information) And various functions for executing various processes including an information search function for searching. In addition, these various functions are implement | achieved by the well-known technique with which a general navigation apparatus is provided. The configuration of the control unit 10 will be described in detail later (see FIG. 2). Note that “POI” is a broad concept “point of interest”, but in this example, a case where POI information indicates “property” will be described.

  The storage unit 20 includes a ROM, a RAM, and the like, and is a storage medium that stores various computer programs used by the navigation device 100 and various information necessary for the navigation device such as map information. The configuration of the storage unit 20 will be described in detail later (see FIG. 2).

  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 has a function of outputting various types of information, particularly information related to route guidance, in a form that can be recognized by the user. For example, the output unit 40 outputs an image display device (display device, monitor) that displays image information and audio information. Audio output device (speaker device). The image display device displays road map information and user's current 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.). Note that the output unit 40 including the voice output device receives a notification from the control unit 10 and performs voice guidance and the like.

  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 image display device.

  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 sensor information processing unit 11, a communication processing unit 12, a search unit 13, a search range specifying unit 14, a determination unit 15, an output information creation unit 16, and a POI. An information output unit 17 and a route search unit 18 are included.

  The sensor information processing unit 11 has a function of executing processing for acquiring or storing sensor information such as position information and speed information by the sensor unit 50. That is, the navigation apparatus 100 specifies the current position (vehicle position) of the user on the map indicated by the road map information by comparing the position information acquired by the sensor information processing unit 11 with road map information described later.

  The communication processing unit 12 has a function of executing processing for transmitting and receiving various types of information by the communication unit 60.

  The search unit 13 obtains POI information indicating POIs located within a predetermined range based on the current position specified by the sensor information processing unit 11 from the POI information stored in the POI information storage unit 22 described later. It has a function of executing a search process. In this example, the search unit 13 searches for POI information indicating a POI located within the search range specified by the search range specifying unit 14 as a predetermined range. In this example, the search unit 13 indicates a POI located within a predetermined range (in the specified search range in this example) from POI information stored in the POI information storage unit 22 described later. Search for POI information. Note that the search unit 13 may search for POI information indicating a POI located within a predetermined range from POI information stored in an external server or the like via a communication network.

  The search range specifying unit 14 has a function of performing processing for specifying a POI search range based on the current position specified by the sensor information processing unit 11. In this example, the search range specifying unit 14 specifies the map coordinates at the four corners of the map (that is, the map including the vehicle position) displayed on the display screen, and uses the specified four map coordinates as vertices. The range indicated by the rectangle is the POI search range. Note that the method of specifying the search range is not limited to this, and for example, a range of a predetermined shape based on the traveling direction, the current position, and the display map scale may be used as the search range. In this example, when the scale of the displayed map is larger than a predetermined standard (for example, 100 m scale or more), the search range specifying unit 14 does not set the four corners of the displayed map as the search range, The range of a specific distance from (for example, 500 m) is assumed to be the search range.

  The determination unit 15 has a function for executing a process of determining whether or not the determination target satisfies a predetermined determination condition. In this example, the determination unit 15 determines whether there is a predetermined number or more of POI information searched by the search unit 13. Further, the determination unit 15 has a function of executing a process of determining whether the user of the navigation device 100 has moved more than a specific distance from the current position as a reference when the search range specifying unit 14 specifies the search range. Regarding this movement determination, the determination unit 15 has moved to a position where the current position of the user satisfies a predetermined condition for the search range specified by the search range specifying unit 14 (for example, outside the specified POI search range). It is good also as a structure which determines whether it is.

  The output information creation unit 16 indicates the output contents and the output order of a predetermined number or more of POI information in response to the determination unit 15 determining that there is a predetermined number or more of POI information searched by the search unit 13. It has a function of executing processing for creating output information based on a predetermined creation criterion. In this example, assuming that the number of POI information displayed on one screen is two and the output information creation unit 16 has three or more searched POI information, the output contents and output order of each POI information, and Output information indicating the output time is created. If the retrieved POI information is less than a predetermined number, the control unit 10 outputs less than the predetermined number of POI information on one screen. In this case, the control unit 10 does not perform processing for determining at least the output order and the output time, and the POI that was less than the predetermined number in response to the search for new POI information according to the movement of the user. Stop outputting information.

  In this example, the output information creation unit 16 extracts information corresponding to items (for example, POI name and latitude / longitude) determined in advance as output contents from each POI information, and determines the output contents. In this example, the output information creation unit 16 uses the latitude / longitude extracted from the POI information, the coordinates indicating the vehicle position, and the direction of the POI viewed from the vehicle position based on the traveling direction of the user. And the distance (or road) from the vehicle position to the POI. Further, the output information creation unit 16 determines the output order of the POI information so that the distance from the current position of the user to each POI is output in the short order (that is, the POI order close to the current position). Further, the output information creation unit 16 estimates the time required for the user to move for a specific distance (for example, 50 m) as a condition for newly searching for POI information, for example, based on the user's moving speed. The output time of each POI information is determined so that all the POI information is output. Then, information indicating the determined content is created as output information and registered in an output information management table 23 described later.

  When the user's movement route can be estimated (for example, when guiding a recommended movement route), the output information creation unit 16 sets the output order so that POI information is output in the order in which the user approaches each POI. The output time may be determined. Moreover, it is good also as a structure which sets a predetermined time interval (for example, 5 second interval) as the output time of each POI information.

  Further, when the POI information searched by the search unit 13 exceeds a predetermined number and exceeds a specific number, the output content is reduced (for example, the output content is limited to the POI name only) and the POI displayed on one screen. A configuration in which the number of pieces of information is increased (for example, three) may be employed. With such a configuration, it is possible to increase the POI information output before the user moves out of the search range.

  The POI information output unit 17 has a function of executing processing for outputting POI information to the display screen of the image display device provided in the output unit 40 based on the output information created by the output information creation unit 16. In this example, the POI information output unit 17 outputs, in addition to the output content indicated by the output information, POI information in the order of output on the map displayed on the display screen (in this example, output information described later). A predetermined image (for example, see FIG. 6 to be described later) for notifying the user of the location where the POI indicated by the display flag “1” is set in the display flag in the management table 23 (see FIG. 4) is displayed on the map. Superimposed on the display.

  The route search unit 18 performs route search processing for deriving a travel route from a departure position (for example, the current position of the user or a position input by the user) to a destination (for example, a position selected by the user on the map). It has the function to do. In the route search process, for example, input of information indicating a departure place (for example, current position) and a destination is received via the input unit 70, and based on the received information, road information is referred to from the departure place. A process of deriving a travel route to the destination and generating a map around the travel route including a road map including the derived 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.

  In addition, when the route search unit 18 in this example guides the user according to the recommended travel route that has already been searched, the POI information output in the navigation process (see FIG. 5) described later according to the user's operation. It has a function of executing a process of re-searching a recommended movement route from the current position to the destination with the POI position shown as a waypoint.

  As shown in FIG. 2, the storage unit 20 includes a road map information storage unit 21, a POI information storage unit 22, and an output information management table 23.

  The road map information storage unit 21 is a storage medium that stores map information divided into a predetermined grid (in this example, a rectangular range divided by a constant 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 manages roads by representing nodes and links as road information indicating traffic regulation, road configuration, and the like. It is a storage medium for storing. That is, the route search unit 11 acquires information necessary for the route search process from the road map information storage unit 21. Hereinafter, information in which map information and road information are appropriately associated is 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 POI, a POI name, an address, a direction, a distance, a telephone number, a popularity ranking, and an introduction. Includes articles and menus.

  Here, “direction” means the direction of the POI viewed from the vehicle position. “Distance” means the distance from the vehicle position to the POI.

  Each POI information need not have data corresponding to all items as POI information. For example, POI information may include POI-ID, POI name, and POI information indicating only latitude and longitude. good.

  The output information management table 23 is a table in which the output information created by the output information creation unit 16 is set.

  FIG. 4 is an explanatory diagram illustrating an example of a storage state of output information in the output information management table 23. As shown in FIG. 4, the output information in this example is information in which an output order, POI-ID, output content, output time, and display flag are associated with each other.

  Here, the “output order”, “output content”, and “output time” are determined by the output information creation unit 16 described above. In this example, it is assumed that priority is set for each item (POI name, etc.) of POI information to be output contents. For example, the data corresponding to “introduction article” in POI information is “telephone”. It is assumed that the output content is set in preference to the data corresponding to “number”. In the output contents, an upper limit of the number of characters displayed on the display screen may be set.

  The “display flag” indicates POI information in the output order (here, POI-ID and output contents), and “1” is set in the POI information in the output order. Shall. In this example, a case where two pieces of POI information can be displayed on one screen will be described as an example, so that “1” is set in the display flag is two pieces of POI information. That is, for example, when the state of outputting POI information in the state shown in FIG. 4 continues for the corresponding output time, the control unit 10 sets a display flag corresponding to the POI information with POI-IDs “0101” and “0102”. The display flag of POI-IDs “0103” and “0104” indicating the POI information to be output next is changed to “1”.

  Note that the configuration of the output information is not limited to this, and any configuration that includes all or part of the POI information such as an image included in the POI information may be used.

  Next, the operation of the navigation device 100 in 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 processing, processing for continuously searching for POI (that is, POI information indicating information on POI) and arranging the result on the display screen in real time is performed.

  The navigation process in this example is started in response to, for example, the control unit 10 starting to display a map indicating the current position of the user A of the navigation device 100. That is, in this example, it does not matter whether or not there is a searched route (for example, a recommended travel route) as a start condition of the navigation process.

  In the navigation process, first, the control unit 10 specifies the current position of the user A by the sensor information processing unit 11 (step S101). The control unit 10 may be configured to accept an input of an arbitrary departure place from the user A.

  When the current position of the user A is specified, the control unit 10 uses the search range specifying unit 14 to specify the POI search range based on the specified current position (step S102).

  When the POI search range is specified, the control unit 10 causes the search unit 13 to search for POI information indicating a POI located within the specified search range (step S103).

  When searching for POI information, the control unit 10 causes the determination unit 15 to determine whether the search result indicates a predetermined number or more of POI information (step S104). In this example, the determination unit 15 determines whether or not the search result indicates three or more POI information. If it is determined that the search result does not indicate three or more POI information (N in step S104), the control unit 10 is based on display setting information (information indicating a display screen layout and the like) set in advance. The retrieved POI information is output (step S105).

  FIG. 6 is an explanatory diagram illustrating an example of a display screen (POI information output screen) that outputs POI information. As shown in FIG. 6, the POI information output screen includes a map display area 110 that displays a map and a POI information display area 120 that displays POI information.

  In the map display area 110, a current position icon P indicating the current position of the user A is displayed superimposed on a map around the current position of the user. In addition, POI icons G1 and G2 indicating the position of the POI corresponding to the POI information displayed in the POI information display area 120 are displayed on the map. The POI icon is preferably an icon having a different form from other icons (for example, a gas station icon, a home center icon, etc.) normally displayed on the map.

  The POI information display area 120 includes a POI information display window 121 that displays POI information set in the output information management table 23, and slide buttons 122a and 122b that receive a request to change POI information displayed in the POI information display window 122. When performing route guidance based on the recommended travel route, a guidance display area 123 for displaying the distance to the destination (guidance location) and the distance interval (in this example, 50 m) for searching for POI information. A distance interval display area 124 is displayed.

  Note that when the POI information indicated by the search result is less than or equal to the predetermined number, the control unit 10 may be configured not to accept an operation on the slide button 122 by the user A, or in the past according to the operation of the user A. The output POI information may be displayed again.

  In addition, the POI information output screen includes a menu button 111 for receiving a menu screen display request, a screen switching button 112 for receiving a display screen switching request, and the like. In FIG. 6, the map display area 110 is smaller than the POI information display area. However, the configuration of the POI information output screen is not limited to this. For example, the map display area 110 is the main screen and the POI information is displayed. The output screen may be configured to be a sub-screen (for example, a configuration in which the main screen is larger than the sub-screen, a configuration in which the sub-screens of the main screen are superposed, or the like).

  When the POI information is output, the control unit 10 uses the sensor information processing unit 11 to specify the current position of the user A (step S106).

  When the current position is specified, the control unit 10 causes the determination unit 15 to determine the current position of the user A as a reference for specifying the search range (that is, specified from the current position in step S101). It is determined whether it has moved (for example, 50 m) or more (step S107). If it is determined that the current position has not moved more than the specific distance (N in step S107), the control unit 10 continues to display the POI information output screen (that is, shifts to the process in step S105).

  On the other hand, if it is determined that the current position of the user A has moved by a specific distance or more (Y in step S107), the control unit 10 proceeds to the process in step S101.

  If it is determined in the process of step S104 in the navigation process that the search result indicates a predetermined number or more (three or more in this example) of POI information (Y in step S104), the control unit 10 The output information creation unit 16 creates output information indicating the output contents and output order of a plurality of POI information indicated by the search result (step S108).

  When the output information is created, the control unit 10 outputs POI information based on the created output information and the display setting information in this case (step S109). In this example, the control unit 10 outputs the POI information output screen in the same form as when the search result does not indicate a predetermined number or more of POI information (see FIG. 6).

  In this example, the control unit 10 determines that a request for changing the output POI information is received in response to, for example, the user A pressing the display position of the slide button 122 on the POI information output screen with a finger. The POI information to be output is changed based on the output order. Specifically, for example, as shown in FIG. 4, when the display flag of the POI information corresponding to the output order “1” and “2” is “1”, the POI indicating that the next POI information is output. When an information change request is received (for example, when a press on the display position of the slide button 122a is received), the control unit 10 sets the display flag corresponding to the output order “1” to “0” and sets the output order “3”. Set the display flag to “1”. Further, immediately after that (that is, before the elapse of the output time of the output order “3”), when a POI information change request indicating that the POI information once displayed is output is received (for example, for the display position of the slide button 122b) When the pressing is accepted, the control unit 10 sets the display flag of the output order “3” to “0” and the display flag of the output order “1” to “1”. In this example, it is assumed that the control unit 10 starts counting the output time of the POI information being output in response to receiving the pressing of the slide buttons 122a and 122b.

  When the POI information is output, the control unit 10 determines whether or not a predetermined time (in this example, the output time corresponding to the POI information being output (see FIG. 4)) has elapsed since the POI information was output. (Step S110). If it is determined that the predetermined time has not elapsed (N in step S110), the control unit 10 continues to display the POI information output screen (that is, shifts to the process in step S109).

  On the other hand, if it determines with predetermined time having passed (Y of step S110), the control part 10 will specify the present position of the user A by the sensor information processing part 11 (step S111).

  When the current position is specified, the control unit 10 causes the determination unit 15 to determine the current position of the user A as a reference for specifying the search range (that is, specified from the current position in step S101). It is determined whether it has moved (for example, 50 m) or more (step S112). If it is determined that the current position has not moved more than a specific distance (N in step S112), the control unit 10 continues to display the POI information output screen (that is, shifts to the process in step S109).

  On the other hand, if it is determined that the current position of the user A has moved by a specific distance (for example, 50 m) or more from the current position used as a reference for specifying the search range (Y in step S112), the control unit 10 performs the process in step S101. Transition. Until the POI information indicating the POI around the current position is newly searched and output, the output of the POI information up to that point may be continued, or the search range may be changed according to the movement of the user A. The output of POI information indicating the POI located inside may be terminated.

  For example, the navigation process ends when the control unit 10 finishes displaying the map according to the operation of the user A.

  As described above, in the above-described embodiment, the navigation device 100 that displays the current position of the user A on the map on the display screen of the display device (for example, the image display device included in the output unit 40) is the road map. A road map information storage unit 21 for storing information and a POI information storage unit 22 for storing POI information indicating a guidance object (for example, a property) are provided, and the current position of the user A is specified based on the road map information. The POI search range based on the specified current position (for example, the map coordinates at the four corners of the “map including the current position” displayed on the display screen are specified, and the specified four map coordinates are used as vertices. (A range indicated by a rectangle) is specified, POI information indicating a POI located within the specified search range is searched, and whether or not the searched POI information is a predetermined number (for example, three) or more is determined. In response to determining that there is a predetermined number or more of POI information, predetermined output information indicating the output contents of the POI information of a predetermined number or more, the output order, and the position on the map of the POI indicated by each POI information is predetermined. And a predetermined image is displayed at the position of the POI on the map according to the output order based on the generated output information (for example, information set in the output information management table 23) (for example, POI icons G1 and G2 are displayed), and it is determined whether or not the user A has moved to a position that satisfies a predetermined condition with respect to the specified current position (for example, a position that is more than a specific distance from the current position as a reference of the search range). The user A is newly configured to search for POI information in response to the determination that the user A has moved to a position that satisfies a predetermined condition. It is possible to fast-growing Te recommended listing to more effectively guide.

  In other words, if there are more properties to be guided according to the user's current location than the visibility of the display screen or the number that can be comfortably viewed by the user, the retrieved information is not presented as it is, but output Since the contents can be limited and sequentially output, guidance of recommended properties according to the movement of the user can be performed in a manner that the user can easily recognize.

  In addition, the navigation device 100 provides the user with information other than position information (for example, an introduction article) as POI information, so that the user confirms attribute information such as preliminary information and catch phrase wordings of the property currently being viewed. become able to. That is, for example, when a user goes to a store, when the store is closed, it is possible to immediately check when the store is open. In addition, when the user thinks “Is there a convenience store somewhere?” Or “Is there any place to eat?”, There is no need to re-search the surrounding facilities. In this case, it is preferable that the navigation device 100 is configured to accept a user's selection with respect to the output POI information, read out the details of the selected POI information from the POI information storage unit 22, and output it. Note that such a method of using the navigation device 100 is particularly effective when the user moves on foot.

  In the above-described embodiment, the navigation device 100 displays a map including the current position specified at a predetermined scale (scale) based on the road map information on the display screen (for example, the image display device included in the output unit 40). The map range displayed on the display screen (for example, the map coordinates of the four corners of the map displayed on the display screen are specified, and the four specified map coordinates are apexes. Since the POI search range is specified as the POI search range, the POI search can be executed according to the display map scale, and the recommended property can be guided more efficiently. Become.

  In the above-described embodiment, the output information (for example, the output information set in the output information management table 23) is a map of the POI (for example, the POI located around the current position of the user A) indicated by each POI information. Configuration in which the navigation apparatus 100 displays a predetermined image at the position of the POI on the map (for example, displays the POI icons G1 and G2) according to the output order, including the upper position (for example, latitude / longitude) Therefore, it is possible to dynamically plot the guidance target property (for example, the POI indicated by the POI information displayed in the POI information display area 120) on the map. This also gives the display screen a “movement” other than the display change of the map according to the current position, so that the user's interest can be attracted. Note that the navigation device 100 stops outputting POI information when the user's moving speed is equal to or higher than a predetermined speed or when the user approaches a traffic accident frequent occurrence point so as not to disturb safety during movement. It is good also as composition to do. Alternatively, the POI information may be switched to audio output.

  Further, in the above-described embodiment, the navigation apparatus 100 indicates that the POI information (for example, the POI in which “1” is set in the display flag in the output information management table 23) is indicated by the output information. Since only the (information) is output (for example, the POI icons G1 and G2 are displayed), it is possible to prevent the visibility of the display screen from being lowered due to excessive information.

  In the above-described embodiment, the navigation device 100 determines the output order based on the distance from the current position of the user A to each POI (for example, outputs in order of increasing distance from the current position of the user to each POI). The output order of POI information is determined so that the POI in a position close to the user can be preferentially guided, and the user is more likely to be interested in the guidance target. Will be able to.

  Although not particularly mentioned in the above-described embodiment, the navigation device 100 includes a preference information storage unit that stores preference information indicating the preference of the user A, and the output contents for each POI information based on the preference information or The output order may be determined. That is, for example, a genre (category) of POI may be registered in advance as user preference information, and only the POI information indicating the POI corresponding to the registered genre may be searched. With such a configuration, it is possible to preferentially guide POI information according to the user's preference. Further, when the parking lot is defined as a narrowed genre, the user can move to the next property without rushing even if the user has no parking lot as the destination. Also, depending on the case, a parking lot in one back alley hits and it becomes possible to respond to the user's desire for action such as “Will you stop here?”. Such a method of using the navigation device 100 is particularly effective when the user moves by car.

  In addition, the output information creation criterion is not limited to this. For example, when the navigation apparatus 100 has a function of accumulating the user's action history, priority is given to POI information indicating a POI without a user's visit history. Alternatively, the configuration may be such that the POI information indicating the POI without the user's visit history is output preferentially. Further, the configuration may be such that the output information creation criteria can be set by the user.

  In the embodiment described above, the navigation apparatus 100 determines the output time of each of a predetermined number or more (for example, three or more) of POI information according to a predetermined determination rule (for example, a condition for newly searching for POI information). Is estimated from the moving speed of the user, and the output time of each POI information is determined so that all POI information is output within the estimated time. ) Since the output information including the determined output time is created, the POI information to be output can be changed without waiting for the user's operation to be accepted. Also, since the POI information output at a predetermined time interval is changed regardless of movement (that is, the output information is updated), it is more convenient for the user than when changing the POI information output according to the movement of the user. It becomes possible to improve the visibility of information. In particular, when the output information is updated according to the movement, the output time can be shortened, so that the output information can be easily viewed. In this case, for example, the size of the POI search range may be changed according to the moving speed of the user. That is, for example, the POI search range may be specified as a wider range in the moving direction as the moving speed of the user increases.

  In the above-described embodiment, the navigation device 100 has moved to a position that satisfies a predetermined condition with respect to the specified current position (for example, a position that is 50 m or more away from the current position as a reference when specifying the search range). In response to the determination that the user A has moved to a position that satisfies a predetermined condition with respect to the current position specified by the user A, the POI information is newly searched. Search can be continued and the result can be output in real time.

  Although not specifically mentioned in the above-described embodiment, the navigation device 100 outputs the output order on the map being displayed on the display screen (for example, on the map being displayed in the map display area 110 in the POI information output screen). Whether or not the position of the POI indicated by the POI information (for example, POI information in which “1” is set in the display flag in the output information management table 23) is included is included, and the map The POI information is output in response to the determination that the POI position indicated by the POI information (for example, the POI information included in the output information) is included above, and the POI position indicated by the POI information is included on the map. A configuration may be adopted in which the output order of POI information is postponed in response to the determination that it is not (for example, the output target is slid to the next candidate). In this case, the navigation device 100 may output the postponed POI information when the POI position indicated by the postponed POI information appears on the map in accordance with the movement of the current position of the user A.

  When the navigation device 100 determines that the position of the POI indicated by the POI information is not included on the map being displayed on the display screen, the scale of the map to be displayed is changed from the current position of the user A to the POI. It is good also as a structure changed so that the position of POI which information shows may be included.

  INDUSTRIAL APPLICABILITY The present invention is industrially useful in an industry that handles devices that provide user guidance, and is particularly useful for improving the convenience of a navigation device that actively guides recommended properties to the user.

DESCRIPTION OF SYMBOLS 10 Control part 11 Sensor information processing part 12 Communication processing part 13 Search part 14 Search range identification part 15 Determination part 16 Output information creation part 17 POI information output part 18 Route search part 20 Storage part 21 Road map information storage part 22 POI information storage Unit 23 output information management table 30 memory 40 output unit 50 sensor unit 60 communication unit 70 input unit 100 navigation device

Claims (4)

A navigation device that displays a user's current position on a map on a display screen of a display device,
Road map information storage means for storing road map information;
POI information storage means for storing POI information indicating the guidance object;
Current position specifying means for specifying the current position of the user based on the road map information;
Search range specifying means for specifying a POI search range based on the current position specified by the current position specifying means;
POI information search means for searching for POI information indicating a POI located within the search range specified by the search range specifying means;
Information number determination means for determining whether there is a predetermined number or more of POI information searched by the POI information search means;
When it is determined by the information number determination means that the POI information is equal to or greater than the predetermined number, the output contents of the POI information exceeding the predetermined number, the output order, and the POI indicated by each POI information on the map Output information creating means for creating output information indicating a position based on a predetermined creation criterion;
POI information output means for displaying a predetermined image at the position of the POI on the map according to the output order based on the output information created by the output information creation means;
Movement determining means for determining whether the user has moved to a position that satisfies a predetermined condition for the current position specified by the current position specifying means;
The POI information search means newly searches for POI information when the movement determination means determines that the user has moved to a position that satisfies the predetermined condition. Map display means for displaying on the display screen a map including the current position specified by the current position specifying means at a predetermined scale based on the road map information;
The navigation device according to claim 1, wherein the search range specifying unit specifies a range of a map displayed on the display screen as a search range of the POI. Including preference information storage means for storing preference information indicating the user's preference,
The navigation apparatus according to claim 1, wherein the output information creation unit determines an output content or an output order for each POI information based on the preference information. A navigation program for causing a navigation device to control an operation so as to display a user's current position on a map on a display screen of a display device,
In the navigation device,
Current position specifying processing for specifying the current position of the user based on road map information stored in road map information storage means for storing road map information;
A search range specifying process for specifying a POI search range based on the current position specified in the current position specifying process;
POI information for searching for POI information indicating a POI located within the search range specified in the search range specifying process from the POI information stored in the POI information storage means for storing POI information indicating the guidance object. The search process,
An information number determination process for determining whether there is a predetermined number or more of POI information searched in the POI information search process;
When it is determined that the POI information is greater than or equal to the predetermined number in the information number determination process, the output contents of the POI information exceeding the predetermined number, the output order, and the POI indicated by each POI information on the map Output information creation processing for creating output information indicating the position of the output based on a predetermined creation criterion;
POI information output processing for displaying a predetermined image at the position of the POI on the map according to the output order based on the output information created in the output information creation processing;
A movement determination process for determining whether the user has moved to a position that satisfies a predetermined condition for the current position specified in the current position specifying process;
In the POI information search process, a navigation program for executing a process for newly searching for POI information when it is determined in the movement determination process that the user has moved to a position that satisfies the predetermined condition .