JP2010096890A - Digital map maintenance system, digital map maintenance method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology for preventing a vehicle entrance from being set on a wrong feature. <P>SOLUTION: A map display system 10 includes: a terminal device 20 identifying, on the basis of a movement locus, a deviation point where a vehicle deviates from a road and an arrival point where a driver arrives on foot after getting off the vehicle; and a map server 50 setting, on the basis of the deviation point, the vehicle entrance leading to the arrival point on map data 80. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a technique for maintaining map data representing roads on a map.

  Map data for representing a road on a map is digitized so that it can be used by a computer, and is used by devices such as a vehicle-mounted or portable navigation device, a web server, and a personal computer. General map data exists on the ground such as node data that defines a plurality of nodes that indicate a reference point on a road, link data that defines a plurality of links connecting these nodes, and facilities and scenic spots Polygon data defining features. A device that uses map data performs processing such as road map display, current location display, route search, route guidance, etc. by expressing roads that combine nodes and links together with features on the map. To do.

  As for the actual relationship between the road and the feature, the route to the road close to the feature is not necessarily the route to the feature because of the positional relationship of the vehicle entrance leading to the feature. Therefore, in actual route search and route guidance, the route to the vehicle entrance leading to the destination is more practical than the route to the road close to the destination. Patent Document 1 below discloses a technique for setting a departure point, which is a point where a vehicle has departed from a road, as a vehicle entrance leading to a feature existing in the vicinity thereof.

JP 2007-256207 A

  However, in the conventional technology, when there is another feature closer to the departure point than the feature having the departure point as the vehicle entry point, the departure point is used as the vehicle entry point of the irrelevant feature. There was a problem that it might be set by mistake.

  In view of the above-described problems, an object of the present invention is to provide a technique capable of preventing a vehicle entrance from being set to an incorrect feature.

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

  Application Example 1 The electronic map maintenance system of Application Example 1 is configured to include a server and a plurality of portable terminals that are communicably connected to each other, and maintains an electronic map data used in a navigation device. The mobile terminal includes a location information acquisition unit that acquires location information and a transmission unit that transmits the location information to the server, and the server stores an electronic map data. A storage unit, a moving track storage unit that stores a moving track obtained based on the position information, a moving unit specifying unit that specifies a moving unit of a person carrying the portable terminal, and the moving unit is a vehicle. A departure point that identifies a vehicle departure point that is a point where the vehicle has deviated from the road based on the movement trajectory of the vehicle and the electronic map data. When the vehicle is parked, and when the vehicle is parked, the movement locus and Based on the electronic map data, an arrival identifying unit that identifies arrival at a feature by walking, an information accumulation unit that accumulates information related to the vehicle departure point and information about arrival at the feature by walking, and And a parking facility setting unit that sets the vehicle departure point in the electronic map data as an entrance to the parking facility of the feature based on information stored in the information storage unit. According to the electronic map maintenance system of Application Example 1, since the departure point is set as the vehicle entrance leading to the arrival point where the person got off and arrived on foot, the vehicle entrance is set to an incorrect point. Can be prevented.

  Application Example 2 In the electronic map maintenance system of Application Example 1, the electronic map maintenance system further includes a departure direction specifying unit that specifies a departure direction from the vehicle departure point, and the information storage unit further includes information on the departure direction. May also be accumulated. According to the electronic map maintenance system of Application Example 2, in route guidance, it is possible to notify in which direction the final guidance point should turn to enter the parking facility.

  [Application Example 3] In the electronic map maintenance system of Application Example 1 or Application Example 2, the arrival specifying unit is included in the map data, and the vehicle among the graphic data for representing the feature on the map. When it is specified that the vehicle is parked, a point in the graphic data where the movement locus indicating the transition of the movement by walking stays may be specified as the arrival point. According to the electronic map maintenance system of Application Example 3, it is possible to suppress specifying an incorrect point as a destination point.

  [Application Example 4] In the electronic map maintenance system according to any one of Application Example 1 to Application Example 3, among the graphic data included in the map data and representing the feature on the map, the graphic surrounding the parking facility You may provide the existing area | region setting part which sets data to the said map data as a parking facility utilized for the arrival point specified by the said arrival specific part. According to the electronic map maintenance system of Application Example 4, the graphic data already maintained in the map data can be associated with the destination as a parking facility.

  [Application Example 5] In the electronic map maintenance system according to any one of Application Examples 1 to 4, the getting-off specifying unit for specifying the getting-off point from the vehicle, and the vehicle deviation specified by the departure point specifying unit. A reflection prohibiting unit for prohibiting at least one of the vehicle departure point and the getting-off point from being reflected in the map data when the point and the getting-off point are within a reference distance may be provided. According to the electronic map maintenance system of Application Example 5, the movement trajectory that is likely to indicate the case where the vehicle is parked on the road, the case of using a pick-up car or taxi is excluded from the information for maintaining the vehicle entrance in the map data. By doing so, it is possible to prevent erroneous information from being set in the map data.

  Application Example 6 In the electronic map maintenance system according to any one of Application Examples 1 to 5, the arrival point is reached on foot from the parking facility based on the movement locus stored in the movement locus storage unit. A cost calculation unit that calculates a walking cost representing a burden on the cost, and a cost association unit that associates the walking cost calculated by the cost calculation unit with the entrance set in the map data by the parking facility setting unit. You may prepare. According to the electronic map maintenance system of Application Example 6, when there are a plurality of vehicle entrances for one arrival point, it is possible to maintain the walking cost that can be used as a route selection determination element in map data.

  Application Example 7 In the electronic map maintenance system according to Application Example 1 to Application Example 6, the movement trajectory stored in the movement trajectory storage unit includes a detection date, a detection time, the human personal identification code, and the vehicle. And information indicating at least one of the vehicle types of the vehicle. According to the map maintenance system of Application Example 7, various information can be used for maintenance of the vehicle entrance.

  The map maintenance system of another application example is a map maintenance system that maintains map data representing roads on a map, and includes a movement detection unit that detects a movement locus indicating a transition of a position where a person has moved, and the movement Based on the movement trajectory detected by the detection unit, based on the movement trajectory detected by the deviation detection unit that identifies a departure point that is a point where the vehicle on which the person is riding deviates from the road. A destination specifying unit that specifies a destination point that is reached by the person getting off after walking off the road at the departure point, and a vehicle that leads to the destination point specified by the destination specifying unit And an entrance setting unit that sets the entrance to the map data based on the departure point specified by the departure specifying unit. According to this map maintenance system, since the departure point is set as the vehicle entrance leading to the arrival point where the person got off and reached on foot, it is possible to prevent the vehicle entrance from being set to an incorrect point. it can.

  In the map maintenance system according to another application example, the arrival specifying unit may display a transition of a position moved on foot after the person got off the feature polygon included in the map data and representing the feature on the map. You may specify the point in the feature polygon where the movement locus | trajectory shown stays as said arrival point. According to this map maintenance system, it can be suppressed that an erroneous point is specified as a destination point.

  The map maintenance system of another application example further specifies an unloading point that is the point where the person got off after the vehicle deviated from the road at the departure point based on the movement locus detected by the movement detection unit. A parking area setting unit that sets, in the map data, a parking facility that is used for the arrival point specified by the arrival specifying unit; May be provided. According to this map maintenance system, the parking facility used at the destination can be maintained in map data based on the movement trajectory of the person.

  In the map maintenance system of another application example, the entrance setting unit may determine a vehicle entrance leading to an area surrounding the getting-off point specified by the getting-off specifying unit based on the departure point specified by the departure specifying unit. The map data may be set. According to this map maintenance system, in addition to the maintenance of the parking facility, the vehicle entrance leading to the parking facility can be maintained in the map data.

  In the map maintenance system according to another application example, the parking area setting unit surrounds the getting-off point specified by the getting-off specifying unit among the feature polygons included in the map data and representing the feature on the map. An existing area setting unit that sets the feature polygon in the map data as a parking facility used at the arrival point specified by the arrival specifying unit may be included. According to this map maintenance system, the feature polygon already maintained in the map data can be associated with the destination as a parking facility.

  In the map maintenance system of another application example, the parking area setting unit creates a feature polygon that surrounds the getting-off point specified by the getting-off specifying unit, and is used for the reaching point specified by the reaching specifying unit. As a parking facility, a new area setting unit that sets the feature polygon in the map data may be included. According to this map maintenance system, a feature polygon that represents a parking facility associated with a destination can be newly established in map data.

  The map maintenance system according to another application example further includes the departure point and the getting-off point when the departure point specified by the departure specifying unit and the getting-off point specified by the getting-off specifying unit are within a reference distance. A reflection prohibiting unit that prohibits at least one of the reflection from being reflected in the map data may be provided. According to this map maintenance system, the movement trajectory that is likely to indicate the case where the vehicle is parked on the road, the case of using a pick-up car or taxi is excluded from the information for maintaining the vehicle entrance in the map data. It is possible to prevent erroneous information from being set in the map data.

  The map maintenance system according to another application example further calculates a walking cost representing a burden required for the person to get off and walk to reach the arrival point based on the movement locus detected by the movement detection unit. And a cost association unit that associates the walking cost calculated by the cost calculation unit with the vehicle entrance set in the map data by the entrance setting unit. According to this map maintenance system, when there are a plurality of vehicle entrances with respect to one arrival point, the walking cost that can be used as a route selection determination element can be maintained in map data.

  In the map maintenance system of another application example, the movement trajectory detected by the movement detector includes at least one of a detection date, a detection time, the human personal identification code, the driving state of the vehicle, and the vehicle type of the vehicle. The information to show may be included. According to this map maintenance system, various kinds of information can be used for maintenance of the vehicle entrance.

  The form of the present invention is not limited to the map maintenance system, but, for example, a portable or vehicle-mounted navigation device, a server computer that distributes data to the navigation device, a map maintenance method that maintains map data, and map data are maintained. The present invention can also be applied to other forms such as a program for causing a computer to realize functions. Further, the present invention is not limited to the above-described embodiments, and it is needless to say that the present invention can be implemented in various forms without departing from the spirit of the present invention.

  In order to further clarify the configuration and operation of the present invention described above, a map display system to which the present invention is applied will be described below.

A. Configuration of the map display system 10:
FIG. 1 is an explanatory diagram showing the configuration of the map display system 10. The map display system 10 includes a terminal device 20 as a mobile terminal, a map server 50, an electronic map storage unit, a movement locus storage unit, and a storage device 60 as an information storage unit. The map display system 10 distributes data based on the map data 80 stored in the storage device 60 from the map server 50 to the terminal device 20 via the network 40 and the base station device 32, whereby the road map is displayed in the terminal device 20. Display, current location display, route search, route guidance, and the like. In the map display system 10, a movement trajectory indicating a transition of a position where a person carrying the terminal device 20 has moved is detected by the terminal device 20, and a vehicle entrance is maintained in the map data 80 by the map server 50 based on the movement trajectory. Is done. That is, the map display system 10 also functions as an electronic map maintenance system that maintains map data. In the present embodiment, data extracted from the movement trajectory in the terminal device 20 is collected from the terminal device 20 to the storage device 60 via the network 40 and stored in the storage device 60 as extracted accumulation data 74.

  The storage device 60 of the map display system 10 is a storage device having a storage capacity capable of storing the map data 80 and the extracted accumulated data 74. In this embodiment, the storage device 60 is a hard disk drive (hereinafter referred to as HDD) configured as an external storage device of the map server 50. However, in other embodiments, the storage device 60 is a map server. 50, or a storage device using a semiconductor memory, DVD (Digital Versatile Disk), or CD (Compact Disk).

  The map data 80 stored in the storage device 60 includes node data 810, link data 820, and feature polygon data 830 as graphic data. The node data 810 of the map data 80 defines a plurality of nodes indicating reference points on the road. The link data 820 of the map data 80 defines a plurality of links that connect a plurality of nodes defined in the node data 810. The feature polygon data 830 of the map data 80 defines polygons that represent features such as buildings, parking lots, and landmarks on the map.

  FIG. 2 is an explanatory diagram schematically illustrating nodes, links, and feature polygons defined by the map data 80. In the following description, when the nodes in the figure are individually indicated, a symbol with a letter after the letter “N” is used (for example, N1, N2, N3,...), And the links in the figure are individually indicated. In the case of showing, a letter with a letter after the letter “L” is used (for example, L1, L2, L3,...), And when the feature polygon in the figure is shown individually, the letter “F” is used. Are used followed by numerals (for example, F1, F2, F3,...). In FIG. 2, nine nodes N1 to N9 defined by the node data 810 of the map data 80 are illustrated, and nine links L1 to L9 defined by the link data 820 of the map data 80 are illustrated. . Nodes N1 to N9 represent characteristic reference points on the road or lane, for example, tolerance points, branch points, points where the width changes, vehicle entrances leading to points off the road, and the like. In the example shown in FIG. 2, the node N1 represents the vehicle entrance leading to the feature polygons F1 and F2. The links L1 to L9 represent roads and lanes connecting the nodes N2 to N9. In the example illustrated in FIG. 2, the link L8 represents a road connecting the node N3 and the node N8, and the node N1 representing a vehicle entrance is disposed in the middle of the link L8.

  FIG. 3 is an explanatory diagram showing a detailed configuration of the node data 810 in the map data 80. The node data 810 includes node attribute data 8102 indicating attributes for each node. The node attributes shown in the node attribute data 8102 include a node number, a position coordinate, a node type, the number of connection links, and a connection link number.

  The node number of the node attribute data 8102 indicates a code for identifying the node. The position coordinates of the node attribute data 8102 indicate the position of the node on the map. The node type of the node attribute data 8102 indicates the type of the reference point represented by the node. The number of connected links in the node attribute data 8102 indicates the number of links connected to the node. The connection link number of the node attribute data 8102 indicates a code for identifying a link connected to the node. In the example illustrated in FIG. 3, in the node attribute data 8102 relating to the node N2 to which the node number “N2” is assigned, the node N2 is located on the coordinates [Xn2 (longitude), Yn2 (latitude)], and the node N2 is “ The number of links representing the “intersection” and connected to the node N2 is “4”, and the link numbers are “L1, L2, L4, L9”.

  FIG. 4 is an explanatory diagram showing a detailed configuration of the link data 820 in the map data 80. The link data 820 includes link attribute data 8202 indicating attributes for each link. The link attributes shown in the link attribute data 8202 include a link number, a start point node, an end point node, a road type, and interpolation point coordinates, and also include a link length, a width division, the number of lanes, and the like.

  The link number of the link attribute data 8202 indicates a code for identifying the link. The starting point node of the link attribute data 8202 indicates a code for identifying the node to which the link is connected as the starting point. The end node of the link attribute data 8202 indicates a code for identifying a node to which the link is connected as the end point. The road type of the link attribute data 8202 indicates the type of road or lane represented by the link. The interpolation point coordinates of the link attribute data 8202 indicate the shape of a trajectory where the link extends from the start point node to the end point node. The link length of the link attribute data 8202 indicates the length of the link from the start point node to the end point node. The width category of the link attribute data 8202 indicates the width of the road or lane represented by the link. The number of lanes in the link attribute data 8202 indicates the number of lanes included in the road or lane represented by the link. In the example shown in FIG. 4, in the link attribute data 8202 related to the link L2 to which the link number “L2” is assigned, the link L2 is connected from the “start node N2” to the “end node N3”, and the link L2 represents It is shown that the road is a “general national road”.

  FIG. 5 is an explanatory diagram showing a detailed configuration of the feature polygon data 830 in the map data 80. The feature polygon data 830 includes feature attribute data 8302 indicating an attribute for each feature polygon. The feature polygon attributes shown in the feature attribute data 8302 include a feature number, a feature type, a parking facility, a target facility, a vehicle entrance, and polygon drawing information.

  The feature number of the feature attribute data 8302 indicates a code for identifying the feature polygon. The feature type of the feature attribute data 8302 indicates the type of the feature represented by the feature polygon. When the feature represented by the feature polygon is not a parking facility, the parking facility of the feature attribute data 8302 indicates a code for identifying another feature polygon that represents a parking facility that can be used for the feature. Show. The target facility of the feature attribute data 8302 is used to identify other feature polygons representing other features that can use the parking facility when the feature represented by the feature polygon is a parking facility. The sign is shown. The vehicle entry point of the feature attribute data 8302 indicates a code for identifying a node representing a vehicle entry point that leads to the feature represented by the feature polygon. The polygon drawing information of the feature attribute data 8302 indicates coordinate points for drawing the feature polygon.

  In the example shown in FIG. 5, in the feature attribute data 8302 related to the feature polygon F1 to which the feature number “F1” is assigned, the feature represented by the feature polygon F1 is “department”. The available parking facility is represented by “feature polygon F2”, and the vehicle entrance is a point represented by “node N1”. In the feature attribute data 8302 related to the feature polygon F2 to which the feature number “F2” is assigned, the feature represented by the feature polygon F2 is “dedicated parking lot”, and other parking facilities can be used. The feature is represented by “feature polygon F1”, and the vehicle entrance is a point represented by “node N1”.

  FIG. 6 is an explanatory diagram mainly showing the configuration of the terminal device 20 in the map display system 10. The terminal device 20 of the map display system 10 is a portable navigation device. In this embodiment, the terminal device 20 is a mobile phone having a function as a navigation device. The terminal device 20 includes a CPU (Central Processing Unit) 210, a memory 220, a display 230, an input button 240, a wireless communication unit 250, a GPS reception unit 260 as a position information acquisition unit, a speaker 272, and a microphone. 274 and an acceleration sensor 280.

  The CPU 210 of the terminal device 20 controls each unit of the terminal device 20. The memory 220 of the terminal device 20 stores a program that defines the operation of the CPU 210 and various data handled by the CPU 210. The programs stored in the memory 220 include a telephone communication program 221, a navigation program 222, and a probe program 224. The telephone communication program 221 is a program for causing the CPU 210 to realize a function of executing voice communication and data communication through a mobile phone network. The navigation program 222 is a program for causing the CPU 210 to execute functions for executing road map display, current location display, route search, and route guidance. The probe program 224 causes the CPU 210 to realize a function of detecting a movement locus indicating a transition of a position where a person holding the terminal device 20 has moved based on information detected by the GPS receiver 260 and the acceleration sensor 280. It is a program.

  The display 230 of the terminal device 20 displays various images including a road map based on instructions from the CPU 210. The input button 240 of the terminal device 20 receives data input from a user who operates the terminal device 20.

  The wireless communication unit 250 of the terminal device 20 exchanges data with the map server 50 by wireless communication. In the present embodiment, the terminal device 20 connects to the network 40 connected to the map server 50 by the wireless communication unit 250 of the terminal device 20 performing wireless communication with the base station device 32 of the mobile phone network. The network 40 may include the Internet, a WAN (Wide Area Network), a LAN (Local Area Network), a mobile phone network, a fixed telephone network, an optical communication network, and the like.

  The GPS receiver 260 of the terminal device 20 receives a GPS (Global Positioning System) signal transmitted from the geodetic satellite 90. By analyzing the GPS signal received by the GPS receiver 260, the current position of the terminal device 20 can be detected. The acceleration sensor 280 of the terminal device 20 detects the speed and acceleration at which the terminal device 20 moves.

  The terminal device 20 includes a movement detection unit 211, a departure point specifying unit 212, a getting-off specifying unit 213, a reaching specifying unit 214, and a probe transmitting unit 215 as a transmitting unit. In the present embodiment, the functions of the movement detection unit 211, the departure point identification unit 212, the getting-off identification unit 213, the arrival identification unit 214, and the probe transmission unit 215 are realized by the CPU 210 executing arithmetic processing based on software. However, in other embodiments, at least some of these functions may be realized by the electronic circuit of the terminal device 20 operating based on its physical circuit configuration.

  The movement detection unit 211 of the terminal device 20 detects the movement trajectory of the person holding the terminal device 20 based on the information detected by the GPS reception unit 260 and the acceleration sensor 280. The movement trajectory detected by the movement detection unit 211 is stored in the memory 220 as probe data 226.

  Based on the probe data 226 and the map data 80, the departure point specifying unit 212 of the terminal device 20 specifies a departure point that is a point where the vehicle on which the person holding the terminal device 20 is getting off the road. Based on the probe data 226, the getting-off specifying unit 213 of the terminal device 20 specifies a getting-off point that is a point where the person holding the terminal device 20 got off after the vehicle deviated from the road at the departure point. For example, when a predetermined number of probe data 226 exists in a certain area or point, the area or position is specified as the getting-off point. It can be said that the point where the person got off is the position where the vehicle is parked. Therefore, the parking state of the vehicle is specified based on the probe data 226 by a parking state specifying unit (not shown). The arrival specifying unit 214 of the terminal device 20 specifies an arrival point that is a point where a person holding the terminal device 20 gets off and walks after the vehicle deviates from the road at the departure point. The departure point identified by the departure point identification unit 212 and the arrival point identified by the arrival identification unit 214 are stored in the memory 220 as extracted data 227 in an associated state. The probe transmission unit 215 of the terminal device 20 transmits the extracted data 227 to the map server 50. Details of the operation of the terminal device 20 will be described later.

  FIG. 7 is an explanatory diagram mainly showing the configuration of the map server 50 in the map display system 10. The map server 50 includes a CPU 510, a memory 520, a network interface 532, and a storage interface 534.

  The CPU 510 of the map server 50 controls each part of the map server 50. The memory 520 of the map server 50 stores a program that defines the operation of the CPU 510 and various data handled by the CPU 510. The programs stored in the memory 520 include a navigation program 522 and a map maintenance program 524. The navigation program 522 is a program for causing the CPU 510 to realize a function of executing road map display, current location display, route search, and route guidance through the terminal device 20. The map maintenance program 524 is a program for causing the CPU 510 to realize a function of maintaining the map data 80.

  The network interface 532 of the map server 50 is connected to the network 40 so that data communication is possible. The storage interface 534 of the map server 50 is connected to the storage device 60 so that data communication is possible.

  The map server 50 includes a probe receiver 511 and an entrance setting unit 516. In this embodiment, the functions of the probe receiving unit 511 and the entrance setting unit 516 are realized by the CPU 510 executing arithmetic processing based on software. In other embodiments, at least some of these functions are implemented. May be realized by the electronic circuit of the map server 50 operating based on its physical circuit configuration.

  The probe receiving unit 511 of the map server 50 receives the extracted data 227 transmitted from the terminal device 20. The extracted data 227 received by the probe receiver 511 is accumulated as extracted accumulated data 74. The entrance setting unit 516 of the map server 50 sets the vehicle entry / exit in the map data 80 based on the arrival point and the departure point accumulated in the extracted accumulation data 74. Details of the operation of the map server 50 will be described later.

A2. Operation of the map display system 10:
The movement detection process of the terminal device 20 will be described. In the present embodiment, the terminal device 20 continuously executes the movement detection process. In this embodiment, the movement detection process is realized by the CPU 210 of the terminal device 20 operating based on software. However, as another embodiment, the electronic circuit of the terminal device 20 is based on its physical circuit configuration. It may be realized by operating.

  The terminal device 20 of the map display system 10 executes a movement detection process by the CPU 210 of the terminal device 20 functioning as the movement detection unit 211 after the power supply is introduced. In the movement detection process, the terminal device 20 detects the current position of the terminal device 20 based on the output from the GPS receiver 260. Thereafter, the terminal device 20 detects the speed and acceleration of the terminal device 20 based on the output from the acceleration sensor 280. Thereafter, the terminal device 20 records the current position, speed, acceleration, and date / time as probe data 226 in the memory 220. After the probe data 226 is recorded in the memory 220, the terminal device 20 repeatedly executes processing from detection of the current position. In this embodiment, when the current position is detected and the GPS signal cannot be received by the GPS receiver 260, the direction of movement from the current position detected earlier based on the speed and acceleration detected by the acceleration sensor 280. The current position is estimated by calculating the movement distance.

  FIG. 8 is a flowchart showing the probe extraction process (step S12) executed by the terminal device 20 of the map display system 10. In the present embodiment, the terminal device 20 executes the probe extraction process (step S12) of FIG. 8 when the amount of probe data 226 stored in the memory 220 exceeds the threshold value. In the present embodiment, the probe extraction process (step S12) of FIG. 8 is realized by the CPU 210 of the terminal device 20 operating based on software, but as another embodiment, the electronic circuit of the terminal device 20 is You may implement | achieve by operating based on a physical circuit structure.

  When the terminal device 20 of the map display system 10 starts the probe extraction process (step S12), the terminal device 20 specifies a range occupied by the movement locus represented by the probe data 226 stored in the memory 220 on the map (step S121). . Thereafter, the terminal device 20 acquires the map data 80 expressing the range of the movement locus from the map server 50 (step S122).

  Thereafter, the CPU 210 of the terminal device 20 functions as the departure point specifying unit 212. The terminal device 20 specifies a departure point, which is a point where the vehicle on which the person holding the terminal device 20 has departed from the road, based on the movement locus expressed by the probe data 226 and the map data 80 (step). S123). In the present embodiment, a point on the road located immediately before the terminal device 20 moves out of the road is specified as a departure point. In this embodiment, in addition to specifying the departure point, a departure direction deviating from the road at the departure point is specified by a departure direction specifying unit (not shown).

  After the departure point is specified (step S123), the CPU 210 of the terminal device 20 functions as the getting-off specifying unit 213, so that the terminal device 20 moves the vehicle at the departure point based on the movement locus expressed by the probe data 226. After the vehicle deviates from the road, an unloading point (vehicle parking position), which is a point where the person holding the terminal device 20 has unloaded, is specified (step S124). Specifically, for example, when it is determined by the movement trajectory that the vehicle stays in a certain place for a certain period of time, the staying place is specified as the getting-off point (parking position). In this embodiment, it is determined that the moving means specifying unit is moving by the vehicle based on the trajectory pattern, speed, and acceleration. However, in another embodiment, in the movement detection process (step S10), vehicle movement, getting off, walking Information indicating at least one of the movements may be included in the probe data and detected, and based on this information, it may be determined that the movement is by the vehicle.

  After the getting-off point (parking position) is specified (step S124), the CPU 210 of the terminal device 20 functions as the arrival specifying unit 214. The terminal device 20 is a point at which the person holding the terminal device 20 gets off and arrives on foot after the vehicle deviates from the road at the departure point based on the movement locus expressed by the probe data 226 and the map data 80. A certain arrival point is specified (step S125). In the present embodiment, among the feature polygons defined in the feature polygon data 830 of the map data 80, the entry to the feature polygon where the movement trajectory that has moved on foot after the person holding the terminal device 20 got off was retained. Although the point is specified as the destination point, in another embodiment, the approach surface to the feature polygon may be specified as the destination point. If the movement trajectory stays on a feature polygon that represents a feature (for example, a facility with an underground parking lot or a rooftop parking lot) in which the destination and the parking lot are integrally configured, the trajectory moved on foot The center of gravity of the pattern is specified as the arrival point. In the present embodiment, among the nodes defined by the node data 810, the node moves to a predetermined range (for example, within a radius of 30 meters) of a node that represents a feature (eg, a monument, a giant tree, an old tree, etc.) that can be a destination. If the trajectory stays, that node is identified as the destination.

  In this embodiment, when the time passing through the feature polygon is a reference value (for example, 10 minutes) or more, or the total walking distance in the feature polygon and the entry point to the exit point from the feature polygon. When the ratio to the straight line distance is greater than or equal to a reference value (eg, 3: 1), the integral of the absolute value of the change in direction angle within the feature polygon is greater than or equal to the reference value (eg, 360 degrees). Is retained in the feature polygon. In this embodiment, when there are a plurality of feature polygons in which the movement trajectory stays, based on the staying time, the size of the polygon, and the type of polygon (for example, the priority as the arrival point is lowered in the toilet and convenience store). The feature polygon that will be the destination is selected. For large feature polygons that surround multiple small feature polygons (for example, feature polygons that represent shopping centers, outlet malls, amusement parks, etc.), when moving multiple small feature polygons one after the other, A point on the large feature polygon surrounding the small feature polygon is selected as the destination.

  FIG. 9 is an explanatory diagram showing an example of how to specify a departure point, a getting-off point, and a destination point. 9 moves straight on the road 912 from the bottom to the top of the page, and then turns left at the intersection with the road 911. In the present embodiment, it is determined that the person holding the terminal device 20 is on the road 912, 911 based on the locus pattern, speed, and acceleration of the movement locus T11 on the roads 912, 911. For example, when the trajectory pattern continuously moves along a roadway at a speed and acceleration equal to or higher than a reference value (10 kilometers per hour), it is determined that the user is on the board.

  After making a left turn from the road 912 to the road 911, the movement trajectory T11 is a parking facility after going straight on the road 911 from the right side to the left side of the page and then turning right before the intersection with the road 914 to exit the road 911. Enter the feature polygon F12. In the present embodiment, a point S11a on the road 911 located immediately before the movement trajectory T11 enters the feature polygon F12 is specified as a departure point (step S123).

  After entering the feature polygon F12, the movement trajectory T11 moves again after having stagnated in the feature polygon F12. In this embodiment, based on the trajectory pattern, speed, and acceleration of the movement trajectory T11 in the feature polygon F12, the point S11b where the movement trajectory T11 stagnates is specified as the getting-off point, and the vehicle is parked. It is identified (step S124). Specifically, after the trajectory pattern has stagnated, when the trajectory pattern continuously moves at a speed and acceleration that do not satisfy the reference value, the point where the trajectory pattern has stagnated is determined as the getting-off point and the parking position.

  After getting off at the feature polygon F12, the movement trajectory T11 leaves the feature polygon F12. Thereafter, the movement trajectory T11 enters the feature polygon F11 such as a department store from the point S11c, and then passes through the feature polygon F11 over 10 minutes. In this embodiment, it is determined that the movement trajectory T11 has stayed in the feature polygon F11, and the point S11c at which the movement trajectory T11 has entered the feature polygon F11 is specified as the arrival point (step S125).

  Returning to the description of FIG. 8, after the arrival point is selected (step S <b> 125), the terminal device 20 creates extraction data 227 in which the departure point and the arrival point are grouped, and stores the extraction data 227 in the memory 220. (Step S126). In this embodiment, the extracted data 227 is grouped together with the departure point and the departure direction deviating from the road at the departure point. After the extraction data 227 is created (step S126), the terminal device 20 transmits the extraction data 227 stored in the memory 220 to the map server 50 by the CPU 210 of the terminal device 20 functioning as the probe transmission unit 215. (Step S127). After the extraction data 227 is transmitted to the map server 50 (step S127), the terminal device 20 deletes the movement trajectory to the arrival point from the movement trajectories included in the probe data 226 stored in the memory 220 ( Step S128).

  Next, the probe collection process will be described. In this embodiment, the map server 50 executes the probe collection process when the extraction data 227 is transmitted from the terminal device 20. In the present embodiment, the probe collection process is realized by the CPU 510 of the map server 50 operating based on software. However, as another embodiment, the electronic circuit of the map server 50 is based on its physical circuit configuration. It may be realized by operating.

  When starting the probe collection process, the map server 50 of the map display system 10 receives the extracted data 227 from the terminal device 20. Thereafter, the map server 50 stores the extracted data 227 received from the terminal device 20 in the extracted accumulated data 74 stored in the storage device 60.

  FIG. 10 is an explanatory diagram showing a detailed configuration of the extracted and accumulated data 74. The extracted accumulated data 74 includes extracted data 747 indicating the contents of the extracted data 227 received from the terminal device 20. The extracted data 747 includes the coordinates of the departure point and the arrival point, and accompanying information. That is, the information regarding the point where the vehicle deviates and the information regarding the arrival point to the feature by walking are stored in the storage device 60 in an associated state. The accompanying information of the extracted data 747 includes walking cost obtained by quantifying the difficulty when walking from the getting-off point to the arrival point based on the movement locus, the date and time when the departure point and the arrival point were detected, the terminal device 20 Vehicle identification information for identifying a person who holds the vehicle, vehicle information relating to the vehicle such as the driving state of the vehicle on which the person holding the terminal device 20 (for example, on / off of the engine of the car) and the vehicle type may be included.

  FIG. 11 is a flowchart showing the entrance setting process (step S22) executed by the map server 50 of the map display system 10. In the present embodiment, the map server 50 executes the entrance setting process (step S22) of FIG. 11 when the data amount of the extracted accumulated data 74 stored in the storage device 60 exceeds the reference value. In the present embodiment, the entrance setting process (step S22) of FIG. 11 is realized by the CPU 510 of the map server 50 operating based on software, but as another embodiment, the electronic circuit of the map server 50 is You may implement | achieve by operating based on a physical circuit structure.

  When the map server 50 of the map display system 10 starts the entrance setting process (step S22), it reads out the extracted and accumulated data 74 from the storage device 60 (step S221). Then, the map server 50 totals the deviation points included in the plurality of extracted data 747 in the extracted accumulated data 74 for each feature where the arrival point is located (step S222). In this embodiment, departure points are tabulated for each feature polygon where the arrival point is located. For example, when a plurality of arrival points are located in one feature polygon, a plurality of departure points grouped by these arrival points and the extracted data 747 are one departure point regarding the feature polygon. Is aggregated.

  After the departure points are tabulated (step S222), the map server 50 sets, for each feature polygon as the arrival point, a point where the departure points are denser than a predetermined threshold as a vehicle entrance leading to the feature polygon. The map data 80 is set (steps S223, S226, S227). In other words, the departure point is set in the map data 80 as the entrance to the parking facility for the feature polygon. In the present embodiment, a node representing a vehicle entrance is newly provided in the node data 810 in the map data 80, and the feature attribute data 8302 relating to the feature polygon that is the destination is entered in the feature polygon data 830. A new node is added to the mouth. In the present embodiment, the node expressing the vehicle entrance is associated with the extracted data 747 as the attached information together with the departure direction grouped together with the departure point.

  FIG. 12 is an explanatory diagram illustrating an example of a state in which a plurality of vehicle entrances are set in the feature polygon. The configuration of the road and feature polygon in the example shown in FIG. 12 is the same as the configuration shown in FIG. In the example shown in FIG. 12, three departure points S11a, S12a, and S13a that are denser than the threshold are identified from the departure points that are aggregated with respect to the feature polygon F11, and these three departure points S11a, S12a, and S13a are respectively routed. Three representative movement trajectories T11, T12, and T13 are illustrated. The departure point S11a is located on the road 911 in contact with the feature polygon F12. The departure point S12a is located on the road 914 in contact with the feature polygon F12. The departure point S13a is located on the road 911 in contact with the feature polygon F13. In the example shown in FIG. 14, in the node data 810 in the map data 80, three nodes representing the departure points S <b> 11 a, S <b> 12 a, and S <b> 13 a are newly provided as vehicle entrances, and in the feature polygon data 830, the arrival point The three new nodes are added to the vehicle entrance of the feature attribute data 8302 related to the feature polygon F11.

A3. effect:
According to the map display system 10 described above, in order to set a departure point as a vehicle entrance leading to a destination reached by a person getting off and walking (step S226), the vehicle entrance is set to an incorrect point. Can be prevented. Moreover, since the point in the feature polygon is specified as the arrival point (step S125), it is possible to suppress specifying an incorrect point as the arrival point.

A4. First modification:
In the map display system 10 of the above-described embodiment, the departure point and the arrival point are used for the maintenance of the map data 80. However, the departure point may be used for the maintenance of the map data 80 in addition to the departure point and the arrival point.

  FIG. 13 is an explanatory diagram showing a detailed configuration of the extracted and accumulated data 74 in the first modification. The extracted and accumulated data 74 of the first modified example is the same as the extracted and accumulated data 74 of the above-described embodiment, except that it includes the coordinates of the departure point in addition to the coordinates of the departure point and the arrival point. In the first modification, the departure point, the getting-off point, and the arrival point are grouped as extraction data 227 in the terminal device 20.

  FIG. 14 is a flowchart showing the entrance setting process (step S24) in the first modification. In the present embodiment, the map server 50 executes the entrance setting process (step S24) of FIG. 14 when the data amount of the extracted and accumulated data 74 stored in the storage device 60 exceeds the reference value. In the present embodiment, the entrance setting process (step S24) in FIG. 14 is realized by the CPU 510 of the map server 50 operating based on software. As another embodiment, the electronic circuit of the map server 50 is You may implement | achieve by operating based on a physical circuit structure.

  When starting the entrance setting process (step S24), the map server 50 of the map display system 10 reads the extracted and accumulated data 74 including the departure point, the getting-off point, and the arrival point from the storage device 60 (step S241). Thereafter, the map server 50 aggregates the getting-off points and departure points included in the plurality of extracted data 747 in the extracted accumulated data 74 for each feature where the arrival point is located (step S242). In this embodiment, the getting-off point and the departure point are totaled for each feature polygon in which the arrival point is located.

  After the alighting point and the departure point are tabulated (step S242), the map server 50 prohibits reflection not shown when the departure point and the departure point are within a preset reference distance (for example, within 10 meters). The unit deletes these drop-off points and departure points from the aggregated data, and prohibits these drop-off points and departure points from being reflected in the map data 80 (step S243). When parking on the street or using a pick-up car or taxi, there is a high possibility that the departure point and the departure point will be in substantially the same position. For this reason, since the data where the getting-off point and the departure point are substantially at the same position is likely to cause an error in the maintenance of the vehicle entrance, these getting-off point and departure point are deleted from the collected data.

  After the getting-off point and the departure point at substantially the same position are deleted (step S243), the map server 50 sets the parking facility and the vehicle entrance to the map data 80 for each feature polygon that is the arrival point (step S243). S244, S245, S246, S247). In the parking area setting process (step S245), the map server 50 uses the map data 80 as a parking facility that can be used for the feature polygons, for each feature polygon that is the arrival point, the area where the departure points are denser than the threshold. Set to. Thereafter, the map server 50 sets, for each feature polygon that is the arrival point, the map data 80 as a vehicle entrance leading to the feature polygon, where the departure points are denser than a predetermined threshold. In this embodiment, in the node data 810 in the map data 80, a node representing a vehicle entrance is newly provided. In the feature polygon data 830, the parking facility and the vehicle entrance of the feature attribute data 8302 related to the feature polygon which is the arrival point are changed, and the purpose of the feature attribute data 8302 related to the feature polygon representing the parking facility is changed. Facilities and vehicle entrances are changed.

  FIG. 15 is a flowchart showing a parking area setting process (step S245) executed by the map server 50 of the map display system 10. When the map server 50 starts the parking area setting process (step S245), the map server 50 identifies the feature polygon surrounding the area where the getting-off positions are denser than the threshold (step S2452). If there are no feature polygons in the area where the getting-off positions are denser than the threshold, the map server 50 creates a feature polygon surrounding the area where the getting-off positions are denser than the threshold (step S2453).

  FIG. 16 is an explanatory diagram showing an example of a feature polygon surrounding the getting-off position. The configuration of the road and feature polygon in the example shown in FIG. 16 is the same as the configuration shown in FIG. The plurality of circles on FIG. 16 indicate the getting-off positions counted for the feature polygon F11 that is the arrival point. In the example shown in FIG. 16, in the parking area setting process (step S245), the feature polygons F12 and F13 surrounding the area where the getting-off positions are denser than the threshold are specified (step S2452). In the example shown in FIG. 16, there is an area where the getting-off positions are denser than the threshold value in the corner lot demarcated by the road 911 and the road 912, but there is no feature polygon surrounding the area, so an existing area setting unit (not shown) Thus, a feature polygon F21 as a parking facility is newly created (step S2453).

  After the feature polygons where the getting-off positions are dense are identified and created (steps S2452 and S2453), the map server 50 uses the feature polygons where the getting-off positions are dense as the feature polygons that are the arrival points. Is set in the map data 80 (steps S2455, S2456, S2457, S2458, and S2459). In this embodiment, when the use frequency for the feature polygon that is the arrival point is equal to or higher than the threshold (step S2456: “YES”), the map server 50 uses the feature polygons where the getting-off positions are dense as the arrival point. Is set in the map data 80 as a dedicated parking facility maintained at (step S2457). On the other hand, if the frequency of use of the feature polygon that is the arrival point is not equal to or higher than the threshold (step S2456: “NO”), the map server 50 can use the feature polygons where the getting-off positions are densely used for the arrival point. The map data 80 is set as a facility (step S2458). In this embodiment, in order to determine the frequency of use at the arrival point, the feature polygon data 830 includes the number of disembarkation points for each arrival point as data related to the feature polygon representing the parking facility. .

  According to the map display system 10 of the first modified example described above, since the departure point is set as the vehicle entrance leading to the arrival point where the person got off and arrived on foot (step S246), the vehicle entrance was incorrect. It is possible to prevent the point from being set. Moreover, the parking facility used for the arrival point can be prepared in the map data 80 based on the movement trajectory of the person (step S245). In addition to the maintenance of the parking facility, the vehicle entrance leading to the parking facility can be maintained in the map data 80 (step S246). In addition, by removing the movement trajectory that is likely to indicate the case where the vehicle is parked on the road, the case of using a pick-up car or taxi from the information for maintaining the vehicle entrance in the map data 80, incorrect information is obtained. Setting to the map data 80 can be prevented (step S243).

A5. Second modification:
The accompanying information included in the extracted and accumulated data 74 includes a walking cost calculated from the probe data 226 by a cost calculation unit (not shown), and when a plurality of vehicle entrances are specified in the entrance setting process (steps S22 and S24). The priority order for setting the vehicle entrance / exit in the map data 80 may be determined based on the walking cost, or the vehicle entrance / exit for guiding the parking facility at the time of route guidance is set in the map data 80 based on the walking cost. You may do it. Further, the accompanying information included in the extracted and accumulated data 74 in the first modified example includes a walking cost, and when a plurality of parking facilities are specified in the parking area setting process (step S245), the parking facility is set in the map data 80. The priority order to be set may be determined based on the walking cost, or the priority order for guiding the parking facility during route guidance may be set in the map data 80 based on the walking cost. The walking cost is associated with the vehicle entrance set in the map data 80 by the cost association unit.

A6. Third modification:
The accompanying information included in the extracted and accumulated data 74 includes the date on which each point is detected, and map data is used to indicate information indicating how the usage status changes on a specific day of the week or a specific day in the entrance setting process (steps S22 and S24). It may be set to 80. As a result, facilities that change usage on specific days (for example, shopping centers, amusement parks, etc.) and facilities that change usage on specific days (for example, professional baseball games, fireworks displays, etc.) In the route guidance to the vehicle, it is possible to guide the vehicle entrance and the parking facility in consideration of a specific day of the week or a specific day.

A7. Fourth modification:
The accompanying information included in the extracted and accumulated data 74 includes the time at which each point is detected, and information indicating how the usage status changes in the time zone is set in the map data 80 in the entrance setting process (steps S22 and S24). You may do it. In this way, in the route guidance to facilities whose usage changes in time (for example, facilities that offer night discounts, facilities that are closed at night, etc.), guide the vehicle entrance and parking facilities in consideration of the time of day. Can do. Further, when the accompanying information included in the extracted and accumulated data 74 includes the time at which each point is detected, if the departure point is earlier than the departure point, use pick-up by car or taxi It may be determined that this is a trace pattern, and information based on this trace pattern may be prohibited from being reflected in the map data 80.

A8. Fifth modification:
The accompanying information included in the extracted and accumulated data 74 includes personal identification information that identifies a person holding the terminal device 20, and maps information indicating the usage mode of the parking facility in the entrance setting process (steps S22 and S24). Data 80 may be set. For example, a parking facility used by a small number of specific persons may be set as a parking lot of a private house, and may be set as a contract parking lot, an employee parking lot, or a customer parking lot as the number of specific persons increases. . Thereby, the parking facility can be set in the map data 80 according to the use mode.

A9. Sixth modification:
The probe data 226 detected by the terminal device 20 includes vehicle information related to the vehicle such as the driving state and the vehicle type of the vehicle on which the person holding the terminal device 20 was on, and in the probe extraction process (step S12), The departure point, the getting off point, and the arrival point may be specified in consideration of the information. As a result, it is possible to prevent the departure point, the getting-off point, and the arrival point from being erroneously specified. The accompanying information included in the extracted and accumulated data 74 includes vehicle information. Even if the vehicle entrance and parking facilities are set in the map data 80 in consideration of the vehicle information in the entrance setting process (steps S22 and S24). good. Thereby, it can suppress setting a vehicle entrance and a parking facility accidentally.

B. Other embodiments:
The embodiments of the present invention have been described above. However, the present invention is not limited to these embodiments, and can of course be implemented in various forms without departing from the spirit of the present invention. is there. For example, a plurality of different vehicle departure points may be set in the map data 80 as entrances to a single parking facility. Further, a single vehicle departure point may be set in the map data 80 as an entrance to a plurality of different parking facilities.

  In this embodiment, the terminal device 20 of the map display system 10 is a mobile phone, but it may be a terminal device of a wireless local area network (LAN), or a mobile terminal dedicated to map display. It may be an in-vehicle car navigation device. In this embodiment, the map server 50 distributes data based on the map data 80 to the terminal device 20 via the network 40 or the like. However, in another embodiment, the storage device 60 is built in the terminal device 20. Alternatively, it may be externally attached and the terminal device 20 may directly handle the map data 80. When the terminal device 20 directly handles the map data 80, the map server 50 may distribute the difference data before and after the correction of the map data 80 to the terminal device 20.

  In the embodiment, the extracted data 227 is created from the probe data 226 in the terminal device 20. However, in another embodiment, the probe data 226 is transferred from the terminal device 20 to the map server 50, and the map server 50 Extracted data 227 may be created from the probe data 226. FIG. 17 is an explanatory diagram mainly showing the configurations of the map server 50 and the storage device 60 in another embodiment. The map server 50 of FIG. 19 includes a departure specifying unit 512, a getting-off specifying unit 513, and a reaching specifying unit 514. After the probe receiving unit 511 receives the probe data 226 from the terminal device 20, the probe data 226 is received. Is stored in the storage device 60 as the probe storage data 72, and is the same as the above-described embodiment.

  Based on the probe accumulated data 72, the departure specifying unit 512 of the map server 50 specifies a departure point that is a point where the vehicle on which the person holding the terminal device 20 is getting off the road. Based on the probe accumulated data 72, the getting-off specifying unit 513 of the map server 50 specifies the getting-off point that is the point where the person holding the terminal device 20 got off after the vehicle deviated from the road at the departure point. The arrival specifying unit 514 of the map server 50 specifies an arrival point that is a point where the person holding the terminal device 20 gets off and arrives on foot after the vehicle deviates from the road at the departure point. The departure point specified by the departure specifying unit 512 and the arrival point specified by the arrival specifying unit 514 are accumulated in the storage device 60 as the extracted accumulation data 74.

  In the embodiment, the map data 80 is maintained in the map server 50. However, in other embodiments, the terminal device 20 may execute processing from detection of the probe data 226 to maintenance of the map data 80. good. FIG. 18 is an explanatory diagram mainly showing a configuration of the terminal device 20 according to another embodiment. The terminal device 20 of FIG. 18 is the same as the above-described embodiment except that the terminal setting unit 216 is provided and the map data 80 is stored in the memory 220. The entrance setting unit 216 of the terminal device 20 sets the vehicle entry / exit in the map data 80 based on the arrival point and the departure point included in the extraction data 227.

It is explanatory drawing which shows the structure of a map display system. It is explanatory drawing which illustrates typically the node, link, and feature polygon which were prescribed | regulated by map data. It is explanatory drawing which shows the detailed structure of the node data in map data. It is explanatory drawing which shows the detailed structure of the link data in map data. It is explanatory drawing which shows the detailed structure of the feature polygon data in map data. It is explanatory drawing which mainly shows the structure of the terminal device in a map display system. It is explanatory drawing which mainly shows the structure of the map server in a map display system. It is a flowchart which shows the probe extraction process which the terminal device of a map display system performs. It is explanatory drawing which shows an example of a mode that a departure point, alighting point, and an arrival point are specified. It is explanatory drawing which shows the detailed structure of extraction accumulation | storage data. It is a flowchart which shows the entrance setting process which the map server of a map display system performs. It is explanatory drawing which shows an example of a mode that several vehicle entrances are set to the feature polygon. It is explanatory drawing which shows the detailed structure of the extraction accumulation | storage data in a 1st modification. It is a flowchart which shows the entrance setting process in a 1st modification. It is a flowchart which shows the parking area setting process which the map server of a map display system performs. It is explanatory drawing which shows an example of the feature polygon which surrounds an alighting position. It is explanatory drawing which mainly shows the structure of the map server and memory | storage device in other embodiment. It is explanatory drawing which mainly shows the structure of the terminal device in other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Map display system 20 ... Terminal device 32 ... Base station device 40 ... Network 50 ... Map server 60 ... Memory | storage device 72 ... Probe accumulation data 74 ... Extraction accumulation data 80 ... Map data 90 ... Geodetic satellite 210 ... CPU
DESCRIPTION OF SYMBOLS 211 ... Movement detection part 212 ... Deviation point specific part 213 ... Alighting specific part 214 ... Arrival specific part 215 ... Probe transmission part 216 ... Entrance setting part 220 ... Memory 221 ... Telephone communication program 222 ... Navigation program 224 ... Probe program 226 ... Probe Data 227 ... Extracted data 230 ... Display 240 ... Input button 250 ... Wireless communication unit 272 ... Speaker 274 ... Microphone 280 ... Acceleration sensor 510 ... CPU
511 ... Probe receiving unit 512 ... Deviation specifying unit 513 ... Getting off specifying unit 514 ... Arrival specifying unit 516 ... Entrance setting unit 520 ... Memory 522 ... Navigation program 524 ... Map maintenance program 532 ... Network interface 534 ... Storage interface 747 ... Extracted data 810 ... node data 820 ... link data 830 ... feature polygon data 911, 912, 914 ... road 8102 ... node attribute data 8202 ... link attribute data 8302 ... feature attribute data

Claims (9)

An electronic map maintenance system comprising a server and a plurality of mobile terminals connected so as to be communicable, and maintaining electronic map data used in a navigation device,
The portable terminal is
A location information acquisition unit for acquiring location information;
A transmission unit that transmits the position information to the server,
The server
An electronic map storage unit for storing electronic map data;
A movement trajectory storage unit for storing a movement trajectory obtained based on the position information;
A moving means specifying unit for specifying a moving means of a person carrying the portable terminal;
When the moving means is specified as a vehicle, based on the movement trajectory of the vehicle and the electronic map data, a departure point specifying unit that specifies a vehicle departure point that is a point where the vehicle has deviated from a road;
A parking state specifying unit for specifying that the vehicle is parked;
When the vehicle departure point is specified and it is specified that the vehicle is parked, an arrival specifying unit for specifying arrival at a feature on foot based on the movement locus and the electronic map data When,
An information storage unit that stores information related to the vehicle departure point and information related to reaching the feature by walking;
An electronic map maintenance system comprising: a parking facility setting unit configured to set the vehicle departure point in the electronic map data as an entrance to the parking facility of the feature based on information stored in the information storage unit. It further comprises a departure direction specifying unit for specifying a departure direction from the vehicle departure point,
The electronic map maintenance system according to claim 1, wherein the information storage unit further stores information on the departure direction.   The arrival specifying unit includes a movement locus indicating a transition of movement by walking when the vehicle is specified as being parked among graphic data included in the map data and representing features on the map. The electronic map maintenance system according to claim 1 or 2, wherein a point in the graphic data where the stagnation is located is specified as a destination.   Further, among the graphic data included in the map data and representing the feature on the map, the graphic data surrounding the parking facility is used as the parking facility used for the arrival point specified by the arrival specifying unit. The electronic map maintenance system in any one of Claims 1 thru | or 3 provided with the existing area | region setting part set to data. Furthermore, an unloading specifying unit for specifying an unloading point from the vehicle,
Reflection that prohibits at least one of the vehicle departure point and the getting-off point from being reflected in the map data when the vehicle departure point specified by the departure point specifying unit and the getting-off point are within a reference distance. The electronic map maintenance system in any one of Claims 1 thru | or 4 provided with a prohibition part. The electronic map maintenance system according to any one of claims 1 to 5, further comprising:
A cost calculation unit that calculates a walking cost that represents a burden required to reach the arrival point on foot from the parking facility, based on the movement locus stored in the movement locus storage unit;
An electronic map maintenance system comprising: a cost association unit that associates a walking cost calculated by the cost calculation unit with an entrance set in the map data by the parking facility setting unit.   The movement trajectory stored in the movement trajectory storage unit includes information indicating at least one of a detection date, a detection time, the human personal identification code, a driving state of the vehicle, and a vehicle type of the vehicle. Item 7. The electronic map maintenance system according to any one of items 6. An electronic map maintenance method for maintaining electronic map data used in a navigation device,
A step in which the computer stores electronic map data in the storage device; a step in which the computer stores in the storage device movement trajectories obtained based on the position information acquired by the plurality of portable terminals;
A step in which a computer specifies a moving means of a person carrying the portable terminal;
When the computer specifies that the moving means is a vehicle, the computer specifies a vehicle departure point that is a point where the vehicle deviates from the road based on the movement locus of the vehicle and the electronic map data;
A computer identifying that the vehicle is parked;
When the vehicle departure point is identified and the vehicle is identified as parked, the computer identifies arrival at the feature on foot based on the movement trajectory and the electronic map data Process,
The computer stores the information about the vehicle departure point and the information about the arrival to the feature by walking in an information storage unit in association with each other,
And a computer setting the vehicle departure point in the electronic map data as an entrance to the parking facility for the feature based on the accumulated information. A program for causing a computer to implement a function for maintaining electronic map data used in a navigation device,
A function of storing electronic map data in a storage device, a function of storing in a storage device a movement trajectory obtained based on position information acquired by a plurality of portable terminals,
A function for identifying a mobile means of a person carrying the portable terminal;
When the moving means is identified as a vehicle, a function for identifying a vehicle departure point, which is a point where the vehicle deviates from the road, based on the movement locus of the vehicle and the electronic map data;
A function for identifying that the vehicle is parked;
When the vehicle departure point is specified, and when the vehicle is specified as parked, the function of specifying the arrival to the feature by walking based on the movement locus and the electronic map data;
A function of accumulating in the information accumulating unit in association with information on the vehicle departure point and information on reaching the feature by walking;
A program for realizing a function of setting the vehicle departure point in the electronic map data as an entrance to the parking facility for the feature based on the accumulated information.

Images