JP4520839B2 - Map update system, navigation device, distribution device - Google Patents

Description

  The present invention relates to a technique for updating map information stored in a navigation device.

  A method of updating map data of an in-vehicle navigation device in which map data is recorded on a hard disk (HDD) is known (Patent Document 1).

JP 2002-333323 A

  In the method disclosed in Patent Document 1, since the entire map data is updated at a time, there is a problem that even map data that does not need to be updated by the user is updated.

  A map updating system according to the invention of claim 1 provides a navigation device for guiding a vehicle to a set destination, and updated map data for partially updating map data used in the navigation device. A distribution device to distributeTo do. In this map update system, the navigation device executes a registration location selection process for setting any registration location selected from preset registration locations as a destination. The distribution device determines an update target area for each registration place selected in the registration place selection process executed by the navigation device so far, creates candidate data corresponding to each of the update target areas, and each of the candidate data Update priority is set based on the number of times the registration location corresponding to the candidate data has been selected in the registration location selection process, and the priority order for each candidate data is determined based on the update priority. Then, candidate data to be included in the updated map data is determined based on the priority order and the data size of each candidate data.
  A map updating system according to a second aspect of the present invention provides a navigation device for guiding a vehicle to a set destination and updated map data for partially updating map data used in the navigation device. And a distribution device for distribution. In this map update system, the navigation device executes a POI search process for searching for a POI designated by an input keyword and setting it as a destination. The distribution apparatus determines each POI facility type searched in the POI search process executed by the navigation apparatus so far as an update target facility type, and creates candidate data corresponding to each of the update target facility types, An update priority is set for each candidate data based on the total number of times that each POI of the facility type corresponding to the candidate data has been searched so far in the POI search process, and the candidate based on the update priority Priorities for each of the data are determined, and candidate data to be included in the updated map data is determined based on the priorities and the data size of each candidate data.
  A map updating system according to a third aspect of the present invention provides a navigation device for guiding a vehicle to a set destination, and updated map data for partially updating map data used in the navigation device. And a distribution device for distribution. In this map update system, the navigation device executes a city map display process for displaying a city map in a specified area. The distribution apparatus determines an update target area for each area where the city map is displayed in the city map display processing executed by the navigation apparatus so far, creates candidate data corresponding to each of the update target areas, and generates candidate data The update priority is set for each of the regions corresponding to the candidate data based on the number of times the city map has been displayed so far in the city map display process, and for each candidate data based on the update priority A priority order is determined, and candidate data to be included in the updated map data is determined based on the priority order and the data size of each candidate data.
  A map update system according to a fourth aspect of the present invention provides a navigation device for guiding a vehicle to a set destination, and updated map data for partially updating map data used in the navigation device. And a distribution device for distribution. In this map update system, the navigation device includes a registration location selection process for setting any registration location selected from preset registration locations as a destination, and a POI specified by the input keyword. And POI search processing for setting the destination as the destination. The distribution apparatus determines an update target area for each registration place selected in the registration place selection process executed so far by the navigation apparatus, and the facility type of the POI searched in the POI search process executed so far by the navigation apparatus. Are determined as update target facility types, and first candidate data corresponding to each of the update target regions for each registered place and second candidate data corresponding to each of the update target facility types are respectively created. For each of the first and second candidate data, the number of times a registered place corresponding to the first candidate data has been selected in the registered place selection process, and a facility corresponding to the second candidate data An update priority is set based on the total number of times each type of POI has been searched in the POI search process, and the first is set based on the update priority. And a priority map for each of the second candidate data, and an updated map from the first and second candidate data based on the priority and the data size of each of the first and second candidate data Decide which candidate data to include in the data.
  A map update system according to a fifth aspect of the present invention provides a navigation device for guiding a vehicle to a set destination, and updated map data for partially updating map data used in the navigation device. And a distribution device for distribution. In this map update system, the navigation device includes a registration location selection process for setting any registration location selected from preset registration locations as a destination, and an urban area in a designated predetermined area. A city map display process for displaying a figure is executed. The distribution device determines an update target area for each registered place selected in the registration place selection process executed by the navigation apparatus so far, and the city map is displayed in the city map display process executed so far by the navigation apparatus. An update target area is determined for each area, and first candidate data corresponding to each of the update target areas for each registered place and a third candidate corresponding to each of the update target areas for each area where the city map is displayed Each of the first candidate data and the third candidate data, the number of times the registration location corresponding to the first candidate data has been selected in the registration location selection process, and the third The update priority is set for each of the areas corresponding to the candidate data based on the number of times the city map has been displayed so far in the city map display process. Based on the priority order and the data size of each of the first and third candidate data, the priority order for each of the first and third candidate data is determined. Candidate data to be included in the updated map data is determined from the inside.
  A map update system according to a sixth aspect of the present invention provides a navigation device for guiding a vehicle to a set destination, and updated map data for partially updating map data used in the navigation device. And a distribution device for distribution. In this map update system, the navigation device searches for a POI specified by an input keyword and sets it as a destination, and displays a city map in a specified area. The city map display process is executed. The distribution device determines each facility type of the POI searched in the POI search processing executed so far by the navigation device as an update target facility type, and the city map is displayed in the city map display processing executed so far by the navigation device. An update target area is determined for each displayed area, the second candidate data corresponding to each of the update target facility types, and a third candidate corresponding to each of the update target areas for each area where the city map is displayed For each of the second and third candidate data, and the total number of times that each POI of the facility type corresponding to the second candidate data has been searched so far in the POI search process The update priority is based on the number of times the city map has been displayed so far in the city map display process for the area corresponding to the third candidate data. Respectively, and determine the priority order for each of the second and third candidate data based on the update priority, and based on the priority order and the data size of each of the second and third candidate data, Candidate data to be included in the updated map data is determined from the second and third candidate data.
  A map updating system according to a seventh aspect of the present invention provides a navigation device for guiding a vehicle to a set destination, and updated map data for partially updating map data used in the navigation device. And a distribution device for distribution. In this map update system, the navigation device includes a registration location selection process for setting any registration location selected from preset registration locations as a destination, and a POI specified by the input keyword. A POI search process for searching for and setting a destination as a destination, and a city map display process for displaying a city map in a specified predetermined area are executed. The distribution apparatus determines an update target area for each registration place selected in the registration place selection process executed so far by the navigation apparatus, and the facility type of the POI searched in the POI search process executed so far by the navigation apparatus. Is determined as an update target facility type, and the update target area is determined for each area where the city map is displayed in the city map display process executed by the navigation device so far. Corresponding first candidate data, second candidate data corresponding to each update target facility type, and third candidate data corresponding to each update target area for each area where the city map is displayed, respectively. For each of the first, second, and third candidate data created, the registered location corresponding to the first candidate data is included in the registered location selection process. Regarding the number of times selected so far, the total number of times that each POI of the facility type corresponding to the second candidate data has been searched in the POI search process, and the region corresponding to the third candidate data The update priority is set based on the number of times the city map has been displayed so far in the city map display process, and the priority order for each of the first, second, and third candidate data based on the update priority Candidate data to be included in the updated map data from among the first, second and third candidate data based on the priority order and the data size of each of the first, second and third candidate data To decide.
  A map updating system according to a ninth aspect of the present invention provides a navigation device for guiding a vehicle to a set destination, and updated map data for partially updating map data used in the navigation device. A distribution device to distributeTo do. In this map update system, the navigation device performs a map storage means for storing map data, and a registration location selection process for setting any registration location selected from preset registration locations as a destination. Registered place selection means to be executed, delivery request means for requesting delivery of updated map data to the delivery device, and selection history for each registered place in the registered place selection process executed by the registered place selection means as history information A history information transmitting means for transmitting to the apparatus, and a map updating means for partially updating the map data stored in the map storage means by using the updated map data distributed from the distribution apparatus. The distribution device sets a plurality of update target areas based on the selection history for each registered place in the history information transmitted from the navigation apparatus by the history information transmitting means, and creates candidate data corresponding to each of the set update target areas. Candidate data creation means for calculating the selection frequency for each registration location in the registration location selection process based on the selection history for each registration location in the history information, and setting the update priority according to the calculated selection frequency to each candidate data An update priority setting means to be set for the candidate data, a priority order determination means for determining a priority order for each of the candidate data based on the update priority set by the update priority setting means, and a priority order determination means. Candidate data to be included in the updated map data from the candidate data based on the priority order and the data size of each candidate data Constant and includes an update map data generating means for generating an update map data including the determined candidate data, and an update map data transmitting means for transmitting the update map data generated by the update map data creating means to the navigation device.
  A map updating system according to a tenth aspect of the present invention provides a navigation device for guiding a vehicle to a set destination and updated map data for partially updating map data used in the navigation device. A distribution device for distribution. In this map update system, the navigation device includes a map storage unit that stores map data, a POI search unit that executes a POI search process for searching for a POI specified by an input keyword and setting the POI as a destination. , Distribution request means for requesting distribution apparatus to distribute updated map data, and history information transmission for transmitting, as history information, a search history for each POI facility type in the POI search processing executed so far by the POI search means. Means and map update means for partially updating the map data stored in the map storage means using the updated map data distributed from the distribution device. The distribution device sets a plurality of update target facility types based on the search history for each POI facility type in the history information transmitted from the navigation device by the history information transmitting means, and candidates corresponding to each of the set update target facility types Candidate data creation means for creating data respectively, and the search frequency for each POI facility type in the POI search process is calculated based on the search history for each POI facility type in the history information, and the update priority according to the calculated search frequency Update priority setting means for setting a degree for each of the candidate data; priority order determining means for determining a priority order for each of the candidate data based on the update priority set by the update priority setting means; Based on the priority determined by the priority determining means and the data size of each candidate data, Update map data creation means for determining candidate data to be included in the update map data, and creating update map data including the determined candidate data, and update for transmitting the update map data created by the update map data creation means to the navigation device Map data transmission means.
  A map updating system according to an eleventh aspect of the present invention provides a navigation device for guiding a vehicle to a set destination, and updated map data for partially updating map data used in the navigation device. And a distribution device for distribution. In this map update system, the navigation device includes a map storage unit that stores map data, a city map display unit that executes a city map display process for displaying a city map in a specified area, and an update map. Distribution request means for requesting distribution of data to the distribution apparatus, and history information transmission means for transmitting the display history of the city map for each area in the city map display processing executed by the city map display means to the distribution apparatus as history information. And map update means for partially updating the map data stored in the map storage means using the updated map data distributed from the distribution device. The distribution apparatus sets a plurality of update target areas based on the display history of the city map for each area in the history information transmitted from the navigation apparatus by the history information transmitting means, and sets candidate data corresponding to each of the set update target areas. Based on the candidate data creation means to be created and the street map display history for each region in the history information, the display frequency of the street map for each region in the street map display process is calculated, and the update priority according to the calculated display frequency Update priority setting means for setting each of the candidate data, priority determination means for determining a priority order for each of the candidate data based on the update priority set by the update priority setting means, and priority Based on the priority order determined by the order determination means and the data size of each candidate data, the updated map is selected from the candidate data. Update map data creating means for determining candidate data to be included in the data and creating update map data including the determined candidate data, and update map data for sending the update map data created by the update map data creating means to the navigation device Transmitting means.
  A map update system according to a twelfth aspect of the present invention provides a navigation device for guiding a vehicle to a set destination and updated map data for partially updating map data used in the navigation device. And a distribution device for distribution. In this map update system, the navigation device performs a map storage means for storing map data, and a registration location selection process for setting any registration location selected from preset registration locations as a destination. Requests registration location selection means to be executed, POI search means for executing POI search processing for searching for a POI designated by an input keyword and setting it as a destination, and delivery of updated map data to the distribution device A distribution request means, a selection history for each registration place in the registration place selection process executed so far by the registration place selection means, and a search history for each POI facility type in the POI search process executed so far by the POI search means; To the map storage means using history information transmission means for transmitting the history information to the distribution apparatus and updated map data distributed from the distribution apparatus. Map data being憶and a map update means for partially updated. The distribution apparatus sets a plurality of update target areas based on a selection history for each registered place in the history information and a plurality of update target facility types based on a search history for each POI facility type in the history information. Candidate data creating means for creating first candidate data corresponding to each of the update target areas based on the search data and second candidate data corresponding to each of the update target facility types based on the search history; The selection frequency for each registered location in the registered location selection process is calculated based on the selection history for each location, and the search frequency for each POI facility type in the POI search processing is calculated based on the search history for each POI facility type in the history information. Thus, an update priority corresponding to each of the calculated selection frequency and search frequency is set for the first and second candidate data, respectively. Update priority setting means, priority determination means for determining the priority for each of the first and second candidate data based on the update priority set by the update priority setting means, and priority determination means The candidate data to be included in the updated map data is determined and determined from the first and second candidate data based on the priority order determined by the above and the data size of each of the first and second candidate data Update map data creation means for creating update map data including candidate data, and update map data transmission means for sending the update map data created by the update map data creation means to the navigation device.
  A map updating system according to a thirteenth aspect of the present invention provides a navigation device for guiding a vehicle to a set destination, and updated map data for partially updating map data used in the navigation device. And a distribution device for distribution. In this map update system, the navigation device performs a map storage means for storing map data, and a registration location selection process for setting any registration location selected from preset registration locations as a destination. Registered place selection means to execute, city map display means for executing city map display processing for displaying a city map in a specified area, and distribution request means for requesting distribution device to distribute updated map data And a selection history for each registered place in the registered place selection process executed by the registered place selection means and a display history of the city map for each area in the city map display process executed so far by the town map display means. Map data stored in the map storage means using history information transmitting means for transmitting history information to the distribution apparatus and updated map data distributed from the distribution apparatus. The and a map update means for partially updated. The distribution apparatus sets a plurality of update target areas based on the selection history for each registered place in the history information and a plurality of update target areas based on the display history of the city map for each area in the history information, and based on the set selection history Candidate data creation means for creating first candidate data corresponding to each of the update target areas and third candidate data corresponding to each of the update target areas based on the display history, and each registration place in the history information Based on the selection history, calculate the selection frequency for each registered place in the registered place selection process, and calculate the display frequency of the city map for each area in the city map display process based on the display history of the city map for each area in the history information. Update priority for setting the update priority corresponding to each of the calculated selection frequency and display frequency for the first and third candidate data, respectively. A priority setting means, a priority determination means for determining a priority for each of the first and third candidate data based on the update priority set by the update priority setting means, and a priority determination means. The candidate data to be included in the updated map data is determined from the first and third candidate data based on the priority order and the data size of each of the first and third candidate data. Update map data creating means for creating the updated map data, and update map data sending means for sending the update map data created by the update map data creating means to the navigation device.
  A map update system according to a fourteenth aspect of the present invention provides a navigation device for guiding a vehicle to a set destination, and updated map data for partially updating map data used in the navigation device. A distribution device for distribution. In this map update system, the navigation device includes a map storage unit that stores map data, a POI search unit that executes a POI search process for searching for a POI specified by an input keyword and setting the POI as a destination. A city map display means for executing a city map display process for displaying a city map in a specified area, a distribution request means for requesting the distribution apparatus to distribute updated map data, and a POI search means. The search history for each POI facility type in the POI search processing executed so far and the display history of the city map for each region in the city map display processing executed so far by the city map display means are sent to the distribution device as history information. Stored in the map storage means using the history information transmission means to be transmitted and the updated map data distributed from the distribution device. And a map update means for partially updating the Figure. The distribution apparatus sets a plurality of update target facility types based on the search history for each POI facility type in the history information and update target regions based on the display history of the city map for each region in the history information, and sets the search Candidate data creation means for creating second candidate data corresponding to each update target facility type based on history and third candidate data corresponding to each update target area based on display history; The search frequency for each POI facility type in the POI search process is calculated based on the search history for each POI facility type, and the city area for each area in the city map display process based on the display history of the city map for each area in the history information The display frequency of the figure is calculated, and the update priority corresponding to each of the calculated search frequency and display frequency is set to the second and third indications. Update priority setting means for setting each of the data, and priority order determination means for determining the priority order for each of the second and third candidate data based on the update priority set by the update priority setting means Candidate data to be included in the updated map data from the second and third candidate data based on the priority order determined by the priority order determining means and the data size of each of the second and third candidate data Update map data creating means for creating updated map data including the determined candidate data, and update map data transmitting means for sending the updated map data created by the updated map data creating means to the navigation device.
  A map update system according to a fifteenth aspect of the present invention provides a navigation device for guiding a vehicle to a set destination, and updated map data for partially updating map data used in the navigation device. A distribution device for distribution. In this map update system, the navigation device performs a map storage means for storing map data, and a registration location selection process for setting any registration location selected from preset registration locations as a destination. A registered place selection means to execute, a POI search means for executing a POI search process for searching for a POI designated by an input keyword and setting it as a destination, and a city map in a designated predetermined area. A city map display means for executing a city map display process for display, a distribution request means for requesting the distribution apparatus to distribute updated map data, and a registered place in the registered place selection process executed by the registered place selecting means so far The selection history for each POI, the search history for each POI facility type in the POI search processing executed so far by the POI search means, and the city map display means. The history information transmitting means for transmitting the display history of the city map for each area in the city map display processing executed so far to the distribution apparatus as history information, and the map storage means using the updated map data distributed from the distribution apparatus Map update means for partially updating the map data stored in the map. The distribution apparatus includes: an update target area based on a selection history for each registered place in the history information; an update target facility type based on a search history for each POI facility type in the history information; A plurality of update target areas based on the first candidate data corresponding to each of the update target areas based on the set selection history and a second candidate corresponding to each of the update target facility types based on the search history Candidate data creation means for creating candidate data and third candidate data corresponding to each of the update target areas based on the display history, and registration in the registration place selection process based on the selection history for each registration place in the history information The frequency of selection for each location is calculated, and POI execution in the POI search process is performed based on the search history for each POI facility type in the history information. Calculates the search frequency for each type, calculates the display frequency of the city map for each region in the city map display process based on the display history of the city map for each region in the history information, and calculates the selected frequency, search frequency, and display Based on the update priority setting means for setting the update priority corresponding to each of the frequencies for the first, second and third candidate data, respectively, and the update priority set by the update priority setting means, Priority determining means for determining priority for each of the first, second, and third candidate data, the priority determined by the priority determining means, and each of the first, second, and third candidate data The candidate data to be included in the update map data is determined from the first, second, and third candidate data based on the data size of the data, and the update map data including the determined candidate data is created. Comprising the update map data generating means for, an update map data transmitting means for transmitting the update map data generated by the update map data creating means to the navigation device.

  According to the present invention, the update target in the update map data is determined based on the processing frequency for each item in the predetermined processing executed so far by the navigation device. Since it did in this way, it can prevent that the map data which does not need to be updated for a user is updated, and only necessary map data can be updated.

-First embodiment-
A map updating system according to an embodiment of the present invention is shown in FIG. This system includes a navigation device (on-vehicle device) 1, a communication terminal 2, a mobile communication network 3, and an updated map data distribution center 4 mounted on the vehicle 100. The navigation device 1 and the communication terminal 2 are connected to each other, and the mobile communication network 3 and the updated map data distribution center 4 are connected to each other.

  The navigation device 1 displays a map such as the vicinity of the vehicle position where the vehicle 100 is located based on map data recorded in an internal HDD (hard disk). Further, a recommended route to the destination set by the user is searched, and the vehicle 100 is guided to the destination according to the recommended route. Note that the map data stored in the HDD of the navigation device 1 can be partially updated by the updated map data transmitted from the updated map data distribution center 4 on a regional basis or facility type basis.

  When setting the destination, one of the following two methods is used. The first method is a method called registration location selection, in which the user selects a point to be set as a destination from registration locations preset in the navigation device 1. This method is suitable when the destination is a point with a relatively high setting frequency, for example, at home or work.

  The second method is a method called POI search, in which a user inputs a keyword such as a telephone number or a facility name to set a POI to be set as a destination among various facilities (POI: Point Of Interest). Is specified. The navigation device 1 searches the POI designated by the input keyword based on the map data, and sets the searched POI as the destination. This method is suitable when the destination is a POI whose telephone number or name is known, such as a travel destination hotel or a tourist facility. It should be noted that the destination may be set by a method other than these methods, for example, a method of setting a point designated on the map as the destination.

  The number of destinations set by the above registration location selection is recorded as a registration location selection history for each registration location. Similarly, the number of destinations set by the POI search is recorded as a POI search history for each POI facility type. The specific contents of the registered location selection history and POI search history will be described later.

  There are two types of maps displayed on the navigation device 1 depending on the scale. The first type of map is a map that is mainly displayed when the map range is a wide area (hereinafter, referred to as a wide area map). This wide area map shows the shape of the road and various backgrounds other than the road, such as the shape of rivers, coastlines, lakes, and the like. When the vehicle 100 is guided to the destination according to the recommended route, this wide area map is mainly used.

  The second type of map is a map that is displayed for a relatively large scale, that is, a detailed map, such as an area where roads and buildings are densely populated, such as an urban area (hereinafter referred to as a city map). . In this city map, in addition to the contents represented by the above wide area map, the road width and the shape of the building are also represented. Note that other types of maps such as a bird's-eye view map may be displayed.

  When the city map is displayed, the display count is recorded as a map display history for each region. The specific contents of this map display history will be described later in the same manner as the registered location selection history and POI search history described above.

  A mobile phone or the like is used as the communication terminal 2, and can make a call to a destination of a designated telephone number and receive incoming calls from other telephones. When an incoming / outgoing call is made at the portable terminal 2, the portable terminal 2 and the mobile communication network 3 are wirelessly connected to establish a telephone line. As a result, the user can make a call with an external telephone. Note that the navigation device 1 has a hands-free call control function, and controls incoming and outgoing calls on the mobile terminal 2 and records the call history, that is, the call destination and caller phone number history. be able to.

  Further, the communication terminal 2 has a data communication function in addition to the above telephone function, and transmits output data from the navigation device 1 to the update map data distribution center 4 and is also transmitted from the update map data distribution center 4. Can be output to the navigation device 1. At that time, the communication terminal 2 is wirelessly connected to the mobile communication network 3 under the control of the navigation device 1. When the communication terminal 2 and the mobile communication network 3 are wirelessly connected, a communication line is established between the navigation device 1 and the updated map data distribution center 4, and data can be transmitted and received.

  As described above, when the communication terminal 2 and the mobile communication network 3 are wirelessly connected during a call or data communication, a radio base station (not shown) is used. The wireless base stations can wirelessly communicate with the communication terminals 2 in a predetermined communication area around the wireless base stations, and are scattered throughout the country. Further, the connection between the navigation device 1 and the communication terminal 2 is not limited to a wired connection using a cable or the like, and a wireless connection such as an infrared ray may be used.

  When updating the map data stored in the HDD of the navigation device 1, the update map data is first transferred from the navigation device 1 to the update map data distribution center 4 using the data communication function of the communication terminal 2 described above. A delivery request is sent. That is, the communication terminal 2 is wirelessly connected to the mobile communication network 3 under the control of the navigation device 1, and a communication line is established between the navigation device 1 and the updated map data distribution center 4. In this state, a distribution map data distribution request is output from the navigation device 1 to the communication terminal 2 and transmitted from the communication terminal 2 to the update map data distribution center 4. This requests the update map data distribution center 4 to distribute the update map data.

  Furthermore, when transmitting a distribution map data distribution request as described above, information (hereinafter referred to as history information) for representing the contents of the registered location selection history, POI search history, and map display history described above is a navigation device. 1 is created. Then, it is transmitted from the navigation device 1 to the updated map data distribution center 4 together with the distribution map data distribution request. The method for creating history information will be described later in detail.

  The updated map data distribution center 4 is provided with a map server in which the latest map data is stored. When the update map data distribution request and history information are transmitted from the navigation device 1 as described above, the update map data distribution center 4 updates based on the latest map data stored in the map server. Create map data. At that time, based on the contents of the received history information, the region or facility type to be updated is specified, and updated map data is created only for the update target. The created update map data is transmitted from the update map data distribution center 4 to the navigation device 1.

  When the navigation device 1 receives the updated map data from the updated map data distribution center 4, the navigation device 1 partially updates the map data recorded in the HDD on a regional basis or facility type basis. In this way, the map data is updated.

  The configuration of the navigation device 1 is shown in FIG. The navigation device 1 includes a control circuit 11, ROM 12, RAM 13, current location detection device 14, image memory 15, display monitor 16, input device 17, and HDD 18. A communication terminal 2 is connected to the control circuit 11.

  The control circuit 11 includes a microprocessor and its peripheral circuits, and performs various processes and controls by executing a control program stored in the ROM 12 using the RAM 13 as a work area. By executing the flowchart shown in FIG. 3 in the control circuit 11, an update map data distribution request and history information are transmitted to the update map data distribution center 4 when the map data is updated. In response to this, the map data in the HDD 18 is partially updated by receiving the update map data transmitted from the update map data distribution center 4. The contents of the flowchart of FIG. 3 will be described later.

  The current location detection device 14 is a device that detects the current location of the host vehicle. For example, a vibration gyro 14a that detects the traveling direction of the host vehicle, a vehicle speed sensor 14b that detects a vehicle speed, and a GPS sensor that detects a GPS signal from a GPS satellite. 14c and the like. The navigation device 1 can determine a route search start point when searching for a recommended route based on the current location of the host vehicle detected by the current location detection device 14.

  The image memory 15 temporarily stores image data to be displayed on the display monitor 16. This image data includes road map drawing data for displaying a map image, various graphic data, and the like, and is created by the control circuit 11 based on the map data recorded in the HDD 18. A map around the vehicle position is displayed on the display monitor 16 using the image data stored in the image memory 15.

  The input device 17 has various input switches for accepting operation input from the user, and this is realized by an operation panel, a remote control, or the like. The user can switch the destination setting method to either the registration location selection or the POI search described above by operating the input device 17 in accordance with the screen instruction displayed on the display monitor 16. In the registration location selection, one of the registration locations is selected by operating the input device 17, and in the POI search, the telephone number or facility name of the POI to be designated as the destination is input as a keyword by operating the input device 17. . Further, the map scale can be switched by operating the input device 17. Thus, when the map scale becomes a predetermined scale or more, if there is a city map setting in the map display target range at that time, the city map is displayed based on the map data.

  Map data is recorded in the HDD 18 as described above. That is, the navigation device 1 stores map data by the HDD 18. Although an example using an HDD is described here, another rewritable nonvolatile recording device such as a rewritable recording disk such as a DVD-RAM, a flash memory, or the like is used instead of the HDD. Also good.

  The map data recorded in the HDD 18 includes route calculation data used for calculating a recommended route, route guidance data used for guiding the vehicle to a destination according to the recommended route, such as an intersection name and a road name. Road data representing road shapes, and background data representing map shapes other than roads such as coastlines, rivers, railways, and buildings. The map data also includes POI data representing the name, position, type, and telephone number of the POI. The data other than the route calculation data is filed separately for each region, and can be rewritten in units of files. Therefore, it can be partially updated on a regional basis. In addition, POI data is further filed separately for each type of facility. Therefore, it can be partially updated for each facility type.

  In the road data, the smallest unit representing a road section is called a link. That is, each road is composed of a plurality of links set for each predetermined road section. In addition, the length of the road section set by a link differs, and the length of a link is not constant. A point connecting the links is called a node, and each node has position information (coordinate information). Also, a point called a shape interpolation point may be set between nodes in the link. Each shape interpolation point also has position information (coordinate information) like each node. The link shape, that is, the shape of the road is determined based on the position information of the node and the shape interpolation point. In the route calculation data, a value called a link cost for representing the time required for passing the vehicle is set corresponding to each of the links.

  When the destination is set as described above, a route calculation from the current location detected by the current location detection device 14 to the destination is performed by a predetermined algorithm based on the route calculation data. A recommended route to the destination is required. Then, a map near the determined recommended route is displayed on the display monitor 16, and a right / left turn instruction or the like is appropriately performed according to the recommended route.

  In the navigation device 1 and the update map data distribution center 4, the flowchart of FIG. 3 is executed. Thereby, based on the usage history of the navigation device 1, the type of region or facility to be updated is specified in the updated map data, and the map data in the HDD 18 can be partially updated in units of region or facility type. it can. Hereinafter, the flowchart of FIG. 3 will be described. In FIG. 3, a flowchart executed in the navigation device 1 is shown in (a), and a flowchart executed in the updated map data distribution center 4 is shown in (b).

  In step S1 of (a), the navigation device 1 determines whether or not to set the registered location as the destination. This determination is made based on the operation input content from the user to the input device 17. When the user switches the destination setting method to registration location selection by operating the input device 17, it is determined that the registration location is set as the destination, and the process proceeds to step S2.

  In step S2, a registration location selection process for setting a destination by the above-described registration location selection is executed. Specifically, one of registered locations registered in advance is selected based on the user's operation, and the registered location is set as the destination. Then, the recommended route to the destination is searched as described above, and guidance to the destination is performed.

  In step S3, the result of step S2 is reflected, and the registration place selection history in which the number of times set as the destination so far is recorded for each registration place is updated. An example of this registered location selection history is shown in FIG. From the contents recorded here, it is understood that “Registered place A” has been selected twice and set as the destination. Similarly, it is understood that “Registered place B” has been selected once and “Registered place C” has been selected four times and set as the destination. In step S3, the registration place selection history is updated with such contents reflecting the selection result of the registration place in step S2.

  If the registration place selection history is updated in step S3 as described above, the process proceeds to the next step S4. On the other hand, if it is determined in step S1 that the registration destination is not set as the destination, the process proceeds to step S4 without executing steps S2 and S3.

  In step S4, it is determined whether or not to search for POI. This determination is also made based on the operation input content from the user to the input device 17 as in step S1. When the user switches the destination setting method to POI search by operating the input device 17, it is determined that the POI is to be searched, and the process proceeds to step S5.

  In step S5, a POI search process for setting a destination by the aforementioned POI search is executed. Specifically, a keyword input from the user is received, a POI corresponding to the keyword is searched based on the POI data in the map data, and the searched POI is set as the destination. Then, the recommended route to the destination is searched as described above, and guidance to the destination is performed.

  In step S6, the result of step S5 is reflected to update the POI search history in which the number of searches made so far is recorded for each POI facility type. An example of this POI search history is shown in FIG. From the contents recorded here, it is understood that “a store” has been searched twice so far for the convenience store which is one of the facility types. Similarly, it is understood that “b oil” and “c station” are searched once for the gas station among the facility types. In step S6, the POI search history is updated with such contents, reflecting the POI search result in step S5.

  When the POI search history is updated in step S6 as described above, the process proceeds to the next step S7. On the other hand, if it is determined in step S4 that the POI is not searched, the process proceeds to step S7 without executing steps S5 and S6.

  In step S7, it is determined whether or not to display a city map. This determination is made based on the map scale and the display target range of the map. If the map scale is equal to or larger than the predetermined scale and there is a city map setting in the area of the map display target range at that time, it is determined that the city map is displayed, and the process proceeds to step S8.

  In step S8, a city map display process for displaying a city map is executed. Specifically, in the area of the map display target range specified at that time, for example, within a predetermined range around the vehicle position or within a predetermined range around the point designated by the user on the map, the HDD 18 A city map is displayed based on the recorded map data.

  In step S9, reflecting the result of step S8, the map display history in which the number of times the city map has been displayed so far is recorded for each region is updated. An example of this map display history is shown in FIG. From the contents recorded here, it can be seen that, for the area corresponding to the mesh ID “123”, the city map has been displayed five times so far. Similarly, it can be seen that the city map is displayed three times for the area corresponding to the mesh ID “222”, once for the area corresponding to the mesh ID “343”, and so on. The mesh ID is a number for representing one of predetermined map division areas set in advance in the map data. That is, different specific areas correspond to each mesh ID. In step S9, the map display history is updated with such contents reflecting the display result of the city map in step S8.

  In step S10, it is determined whether to update the map data. Various conditions can be used for this determination. For example, when the user gives an instruction to update the map data by operating the input device 17, it may be determined that the map data is to be updated. Alternatively, it may be determined that the map data is updated when a predetermined period of time has elapsed. In addition, various map data update start conditions can be set. If it is determined in step S10 that the map data is to be updated, the process proceeds to step S11. If it is determined not to be updated, the process returns to step S1.

  In step S11, an update map data distribution request indicating that distribution of update map data is requested, and history information for representing the contents of the registered location selection history, POI search history, and map display history are updated. Transmit to the map data distribution center 4. The update map data distribution request includes, for example, an ID number for specifying the navigation device 1 and a telephone number of the communication terminal 2.

  The updated map data distribution center 4 receives the updated map data distribution request and history information transmitted from the navigation device 1 in step S11 of (a) in step S21 of (b). Then, in the next step S22, the contents of the registration place selection history, the POI search history, and the map display history are determined from the history information received in step S21, and based on these contents, they are included in the updated map data. Candidate data is created as described below.

  Candidate data is created for all items recorded in the registration place selection history, POI search history, and map display history. Specifically, in the registered location selection history, for all registered locations that have been set as destinations so far, the regions within a predetermined range including each registered location are designated as update target regions. To do. And candidate data are created by extracting each part corresponding to each update object area from the newest map data memorize | stored in the map server. In the example of FIG. 4A, a total of three candidate data are created with three regions including “Registered Land A”, “Registered Land B”, and “Registered Land C” as update target regions.

  Similarly, in the map display history, for each area corresponding to all mesh IDs that have been recorded in the city map so far, each area is set as an update target area. And candidate data are created by extracting each part corresponding to each update object area from the newest map data memorize | stored in the map server. In the example of FIG. 4C, a total of three candidate data is created with the three regions corresponding to the mesh IDs “123”, “222”, and “343” as update target regions.

  In addition, in the POI search history, the facility types of all the POI facility types recorded so far that have been searched are set as update targets. Then, candidate data is created by extracting POI data corresponding to each facility type to be updated from the latest map data stored in the map server. In the example of FIG. 4B, a total of two candidate data corresponding to the facility types “convenience store” and “gas station” are created.

  In step S23, for each candidate data created as described above in step S22, an update priority indicating the priority for including the candidate data in the update map data is set as described below. .

  The update priority is the number of times the item when each candidate data is created in step S22 is recorded in the processing frequency for each item, that is, the number recorded in any of the registered location selection history, POI search history, or map display history. Is set according to the proportion of the total number of times. Specifically, for candidate data created for any registered location recorded in the registered location selection history, the ratio of the number of selected locations to the total number of selected locations That is, the selection frequency for each registered place is calculated and used as the update priority. In the example of FIG. 4A, for the candidate data whose update target area is the area including “Registered place A”, the update priority is a value obtained by dividing the selection number by the total selection number, that is, “2/7”. Is set. Similarly, “1/7” is set for the candidate data whose update target area is the area including “Registered place B”, and “4/7” is the candidate data whose update target area is the area including “Registered place C”. "Is set as each update priority. As described above, the update priority for each candidate data is set based on the selection frequency for each registered place in the registered place selection process executed by the navigation device 1 so far.

  Similarly, for candidate data created for an area corresponding to one of the mesh IDs recorded in the map display history, the number of times that the city map is displayed for that area is relative to the total number of displays for all areas. The proportion, that is, the display frequency of the city map for each region is calculated, and this is set as the update priority. In the example of FIG. 4C, for the three candidate data whose update target areas are the three areas corresponding to the mesh IDs “123”, “222”, and “343”, “5/9”, “3 / “9” and “1/9” are set as the respective update priorities. As described above, the update priority for each candidate data is set based on the display frequency of the city map for each area in the city map display processing executed so far by the navigation device 1.

  In addition, for candidate data created for any facility type recorded in the POI search history, the ratio of the number of searches for POI of that facility type to the total number of searches for all POIs, that is, POI The search frequency for each facility type is calculated, and this is set as the update priority. In the example of FIG. 4B, “2/4” is set as the update priority for candidate data having “convenience store” as the facility type to be updated. For candidate data with “gas station” as the facility type to be updated, the update priority is set to “2/4” by summing the number of searches for “b oil” and “c station”. . As described above, the update priority for each candidate data is set based on the search frequency for each POI facility type in the POI search process executed so far by the navigation device 1.

  In step S24, priority is determined for each candidate data created in step S22 based on the update priority set in step S23. Specifically, the set update priorities are compared, and based on the comparison result, the candidate data with the highest update priority is set as the highest priority, and the priority of each candidate data in the order of the update priority from there. Determine the ranking. Regardless of the registration location selection history, POI search history, and map display history, candidate data is created, and thus the priority of each candidate data can be determined by comparing the update priorities. it can.

  At this time, the weighting of the update priority may be changed according to which history each candidate data is created. For example, for candidate data created corresponding to each registered location based on the registered location selection history, the priority order is determined based on the value obtained by multiplying the update priority set in step S23 by a predetermined magnification. In this way, an appropriate update priority can be set according to the type of candidate data.

  In step S25, based on the priority determined in step S24, the total data size when candidate data with the highest priority at that time is added to the updated map data is calculated. In step S26, it is determined whether or not the total data size calculated in step S25 exceeds a predetermined maximum data size. If it does not exceed the maximum data size, the process proceeds to step S26. In step S26, the candidate data is newly added to the updated map data, and then the process returns to step S25. If it is determined in step S26 that the total data size has exceeded the maximum data size, the process proceeds to step S28. In this way, update map data is created by adding candidate data to the update map data in descending order of priority until the total data size exceeds the maximum data size.

  In step S28, the updated map data created as described above is transmitted to the navigation device 1. If step S28 is performed, the update map data distribution center 4 will complete | finish the flowchart of (b).

  The navigation device 1 receives the updated map data transmitted from the updated map data distribution center 4 in step S28 of (b) in step 12 of (a). Then, in the next step S13, the map data recorded in the HDD 18 is updated using the updated map data. Thereby, only the map data to be updated is updated. If step S13 is performed, the navigation apparatus 1 will complete | finish the flowchart of (a). As described above, partial update of the map data is performed.

According to the first embodiment described above, the following operational effects can be achieved.
(1) The update target in the update map data is determined based on the processing frequency for each item in the registration place selection process, the POI search process, and the city map display process executed so far by the navigation device 1 (step S23). To S27). Since it did in this way, it can prevent that the map data which does not need to be updated for a user is updated, and only necessary map data can be updated.

(2) The registered place selection process is executed in the navigation device 1 (step S2), the selection history for each registered place in the process is recorded as the registered place selection history (step S3), and the updated map data distribution center is recorded based on the history information. 4 (step S11). Based on the selection history, the selection frequency for each registered place is calculated as the update priority (step S23), and the priority order of each candidate data is determined based on the selection frequency, that is, the update priority (step S24). Based on the priority order determined in this way, the candidate data having the highest priority order is added to the update map data in order (step S27), thereby determining the area to be updated and creating the update map data. In this way, the region to be updated in the updated map data is determined based on the selection frequency for each registered location in the registered location selection process executed by the navigation device 1 so far. Since it did in this way, a user's living area can be judged from the selection history of the registration place set to the destination, and the living area can be made into an update object area. Thereby, the necessary map data can be automatically updated without making the user specially aware.

(3) The POI search process is executed in the navigation device 1 (step S5), the search history for each POI facility type in the process is recorded as the POI search history (step S6), and the update map data distribution center is based on the history information. 4 (step S11). Based on this search history, the search frequency for each POI facility type is calculated as the update priority (step S23), and the priority order of each candidate data is determined based on the search frequency, that is, the update priority (step S24). ). Based on the priority order determined in this way, the candidate data having the highest priority order is added to the update map data in order (step S27), thereby determining the POI facility type to be updated and updating the map data. create. In this way, the POI facility type to be updated in the updated map data is determined based on the search frequency for each POI facility type in the POI search process executed so far by the navigation device 1. Since it did in this way, a user's preference can be judged from the search log | history for every facility type of POI searched as a destination, and the facility type made into update object can be determined according to the preference. Thereby, the necessary map data can be automatically updated without making the user specially aware.

(4) The city map display process is executed in the navigation device 1 (step S8), and the display history of the out-of-city map for each region in the process is recorded as the map display history (step S9), and the updated map data is updated by the history information. Transmit to the distribution center 4 (step S11). Based on the selection history, the display frequency of the out-of-city map for each region is calculated as the update priority (step S23), and the priority order of each candidate data is determined based on the display frequency, that is, the update priority (step S23). S24). Based on the priority order determined in this way, the candidate data having the highest priority order is added to the update map data in order (step S27), thereby determining the area to be updated and creating the update map data. In this way, the region to be updated is determined in the update map data based on the display frequency of the city map for each region in the city map display processing executed so far by the navigation device 1. Since it did in this way, a user's living area can be judged from the log | history which displayed the city map, and the living area can be made into an update object area. Thereby, the necessary map data can be automatically updated without making the user specially aware.

(5) For each candidate data created based on the registered location selection history, POI search history, and map display history, the selection frequency for each registered location calculated as the update priority, the search frequency for each POI facility type In addition, the display frequency of the city maps for each region is compared, and the priority order of each candidate data is determined based on the comparison result (step S24). Since it did in this way, a priority can be appropriately determined also between the candidate data produced by the different log | history.

-Second Embodiment-
Another embodiment of the present invention will be described. In this embodiment, by executing the flowchart shown in FIG. 5 instead of the flowchart of FIG. 3, the map data in the HDD 18 is partially updated in units of regions or facilities. In the flowchart of FIG. 5, processing steps that execute the same processing as in FIG. 3 have the same step numbers.

  The navigation device 1 executes the same processing as in FIG. 3 in steps S1 to S11 of (a). Thereby, the update map data distribution request and the history information are transmitted from the navigation device 1 to the update map data distribution center 4.

  The updated map data distribution center 4 executes the same processing as in FIG. 3 in steps S21 to S24 of (b). Thereafter, in step S25A, the data size is calculated for each candidate data created in step S22. In step S26A, candidate data to be included in the updated map data is determined based on the priority order determined in step S24 and the data size calculated in step S25A. For example, if the data size of certain candidate data is extremely larger than others, the candidate data is excluded, and candidate data having a lower priority than the candidate data is included in the update map data. In this way, the update map data is created by determining candidate data to be included in the update map data.

  When candidate data to be included in the updated map data is determined in step S26A, the process proceeds to step S28. In step S28, the created updated map data is transmitted to the navigation device 1 by executing the same processing as in FIG. If step S28 is performed, the update map data distribution center 4 will complete | finish the flowchart of (b).

  The navigation device 1 executes the same processing as in FIG. 3 in steps S12 and S13 of (a), thereby using the updated map data transmitted from the updated map data distribution center 4 to map data recorded in the HDD 18. Update. In this way, partial update of the map data is performed.

  According to the second embodiment described above, the same operational effects as those of the first embodiment can be obtained. Furthermore, by taking the data size into account, it is possible to further optimize the content of the updated map data.

  In each of the embodiments described above, an example has been described in which the map data is automatically updated when the updated map data is received in the navigation device 1. However, only when the user approves the user before confirming the update. You may make it update map data. In particular, when the map data update start is automatically determined in step S10 of FIG. 3 or FIG. 5, for example, when it is determined that the update of the map data starts after a predetermined period of time elapses, By doing so, it is possible to prevent the map data from being updated when the user does not want it.

  In each of the above embodiments, the registration place selection history, the POI search history, and the map display history are respectively recorded by executing the registration place selection process, the POI search process, and the city map display process in the navigation device 1. I was trying. Then, the updated map data distribution center 4 creates candidate data based on each of these histories, and selects one of the candidate data based on the processing frequency for each item of each history. An example of creating was described. However, any one or two of the above processes may not be executed. That is, in the navigation device 1, by executing any one or two of the registered place selection process, the POI search process, and the city map display process, the registered place selection history, the POI search history, and the map display history Record any one or two histories. Then, in the update map data distribution center 4, by creating candidate data based on the history recorded in the navigation device 1, and selecting any candidate data based on the processing frequency for each item of the history, Update map data can be created.

  In each of the above embodiments, the map storage means is realized by the HDD 18, and other processes are realized by processes in the control circuit 11 of the navigation device 1 or the updated map data distribution center 4. However, these are merely examples, and each component is not limited to the above embodiment as long as the characteristics of the present invention are not impaired.

It is a figure which shows the map update system by one Embodiment of this invention. It is a figure which shows the structure of a navigation apparatus. It is a flowchart of the process performed in 1st Embodiment. It is an example of the log | history which recorded the frequency | count of the process performed in the navigation apparatus for every item, (a) shows a registration place selection log | history, (b) shows POI search log | history, (c) shows the example of a map display log | history, respectively. ing. It is a flowchart of the process performed in 2nd Embodiment.

Explanation of symbols

1: Navigation device 2: Communication terminal 3: Mobile communication network 4: Update map data distribution center 11: Control circuit 12: ROM
13: RAM
14: Current location detection device 15: Image memory 16: Display monitor 17: Input device 18: HDD
100: Vehicle

Claims (18)

A navigation device for guiding the vehicle to a set destination;
A distribution device for distributing updated map data for partially updating map data used in the navigation device to the navigation device;
The navigation device executes a registration location selection process for setting any registration location selected from preset registration locations as a destination,
The distribution device includes:
It said the update target area to determine the navigation device is the registered place selection process has been executed so far for each Oite selected registered land,
Create candidate data corresponding to each of the update target areas,
For each of the candidate data, an update priority is set based on the number of times the registration location corresponding to the candidate data has been selected in the registration location selection process,
Determining a priority for each of the candidate data based on the update priority;
A map update system , wherein candidate data to be included in the update map data is determined based on the priority order and the data size of each candidate data . A navigation device for guiding the vehicle to a set destination;
A distribution device for distributing updated map data for partially updating map data used in the navigation device to the navigation device;
The navigation device performs a POI search process for searching for a POI designated by an input keyword and setting the POI as a destination,
The distribution device includes:
Determining the respective facility type of POI to the navigation device is Oite searched the POI search processing executed so far as the update target facility type,
Create candidate data corresponding to each of the facility types to be updated,
For each of the candidate data, an update priority is set based on the total number of times that each POI of the facility type corresponding to the candidate data has been searched in the POI search process,
Determining a priority for each of the candidate data based on the update priority;
A map update system , wherein candidate data to be included in the update map data is determined based on the priority order and the data size of each candidate data . A navigation device for guiding the vehicle to a set destination;
A distribution device for distributing updated map data for partially updating map data used in the navigation device to the navigation device;
The navigation device executes a city map display process for displaying a city map in a specified area.
The distribution device includes:
The navigation device determines the city map display update target area for each region displayed the Oite street map to the processing performed so far,
Create candidate data corresponding to each of the update target areas,
For each of the candidate data, an update priority is set based on the number of times the city map has been displayed so far in the city map display process for the area corresponding to the candidate data,
Determining a priority for each of the candidate data based on the update priority;
A map update system , wherein candidate data to be included in the update map data is determined based on the priority order and the data size of each candidate data . A navigation device for guiding the vehicle to a set destination;
A distribution device for distributing updated map data for partially updating map data used in the navigation device to the navigation device;
The navigation device searches a POI designated by an input keyword by searching for a registration location selection process for setting any registration location selected from preset registration locations as a destination, and a destination. Perform POI search processing to set the location,
The distribution device includes:
It said the update target area to determine the navigation device is the registered place selection process has been executed so far for each Oite selected registered land,
Determining the respective facility type of POI to the navigation device is Oite searched the POI search processing executed so far as the update target facility type,
First candidate data corresponding to each of the update target areas for each of the registered locations, and second candidate data corresponding to each of the update target facility types, respectively,
For each of the first and second candidate data, corresponding to the number of times that a registration location corresponding to the first candidate data has been selected in the registration location selection process and the second candidate data Based on the total number of times that each POI of the facility type to be searched so far in the POI search processing is set, respectively,
Determining a priority for each of the first and second candidate data based on the update priority;
Candidate data to be included in the updated map data is determined from the first and second candidate data based on the priority and the data size of each of the first and second candidate data. Map update system. A navigation device for guiding the vehicle to a set destination;
A distribution device for distributing updated map data for partially updating map data used in the navigation device to the navigation device;
The navigation device displays a city map in a specified predetermined area, and a registration location selection process for setting any registration location selected from preset registration locations as a destination. The city map display process and
The distribution device includes:
It said the update target area to determine the navigation device is the registered place selection process has been executed so far for each Oite selected registered land,
Wherein the update target area is determined for each region displayed the Oite street map to the city map display processing by the navigation apparatus has performed so far,
Creating first candidate data corresponding to each of the update target areas for each of the registered locations, and third candidate data corresponding to each of the update target areas for each of the areas where the city map is displayed;
For each of the first and third candidate data, corresponding to the number of times a registration location corresponding to the first candidate data has been selected in the registration location selection process and the third candidate data The update priority is set for each area based on the number of times the city map has been displayed so far in the city map display process.
Determining a priority order for each of the first and third candidate data based on the update priority;
Based on the priority and the data size of each of the first and third candidate data, candidate data to be included in the update map data is determined from the first and third candidate data. Map update system. A navigation device for guiding the vehicle to a set destination;
A distribution device for distributing updated map data for partially updating map data used in the navigation device to the navigation device;
The navigation device searches for a POI designated by an input keyword and sets the destination as a POI search process, and a city map display process for displaying a city map in a designated area. Run
The distribution device includes:
Determining the respective facility type of POI to the navigation device is Oite searched the POI search processing executed so far as the update target facility type,
Wherein the update target area is determined for each region displayed the Oite street map to the city map display processing by the navigation apparatus has performed so far,
Creating second candidate data corresponding to each of the update target facility types and third candidate data corresponding to each of the update target areas for each area where the city map is displayed;
For each of the second and third candidate data, the total number of times that each POI of the facility type corresponding to the second candidate data has been searched so far in the POI search process, and the third Based on the number of times the city map has been displayed so far in the city map display process for the area corresponding to the candidate data,
Determining a priority for each of the second and third candidate data based on the update priority;
Based on the priority and the data size of each of the second and third candidate data, candidate data to be included in the updated map data is determined from the second and third candidate data. Map update system. A navigation device for guiding the vehicle to a set destination;
A distribution device for distributing updated map data for partially updating map data used in the navigation device to the navigation device;
The navigation device searches a POI designated by an input keyword by searching for a registration location selection process for setting any registration location selected from preset registration locations as a destination, and a destination. A POI search process for setting a place on the ground and a city map display process for displaying a city map within a designated predetermined area are executed.
The distribution device includes:
It said the update target area to determine the navigation device is the registered place selection process has been executed so far for each Oite selected registered land,
Determining the respective facility type of POI to the navigation device is Oite searched the POI search processing executed so far as the update target facility type,
Wherein the update target area is determined for each region displayed the Oite street map to the city map display processing by the navigation apparatus has performed so far,
First candidate data corresponding to each of the update target areas for each of the registered locations, second candidate data corresponding to each of the update target facility types, and an update target area for each of the areas where the city map is displayed And third candidate data corresponding to each of the
For each of the first, second, and third candidate data, the number of times a registration location corresponding to the first candidate data has been selected in the registration location selection process, and the second candidate The total number of times each POI of the facility type corresponding to the data has been searched in the POI search process and the city map display process so far for the area corresponding to the third candidate data are displayed in the city map display process Set the update priority based on the number of
Determining a priority for each of the first, second and third candidate data based on the update priority;
Candidate data to be included in the updated map data from among the first, second and third candidate data based on the priority order and the data size of each of the first, second and third candidate data A map update system characterized by determining In the map update system as described in any one of Claims 4-7,
The map updating system, wherein the distribution device changes the weight of the update priority according to the type of each candidate data when determining the priority. A navigation device for guiding the vehicle to a set destination;
A distribution device for distributing updated map data for partially updating map data used in the navigation device to the navigation device;
The navigation device
Map storage means for storing the map data;
Registration location selection means for executing a registration location selection process for setting any registration location selected from preset registration locations as a destination ;
Distribution request means for requesting the distribution apparatus to distribute the updated map data;
History information transmitting means for transmitting a selection history for each registered place in the registered place selecting process executed by the registered place selecting means to the delivery device as history information;
Map update means for partially updating the map data stored in the map storage means using the updated map data distributed from the distribution device;
The distribution device includes:
A plurality of update target areas are set based on the selection history for each registered place in the history information transmitted from the navigation device by the history information transmitting means, and candidate data corresponding to each of the set update target areas is created. Candidate data creation means;
Based on the selection history for each registered place in the history information, the selection frequency for each registered place in the registered place selection process is calculated, and the update priority according to the calculated selection frequency is set for each of the candidate data Update priority setting means to
Priority order determining means for determining a priority order for each of the candidate data based on the update priority set by the update priority setting means;
Based on the priority determined by the priority determining means and the data size of each candidate data, candidate data to be included in the updated map data is determined from the candidate data, and an updated map including the determined candidate data Update map data creation means for creating data,
A map update system comprising: update map data transmission means for transmitting the update map data created by the update map data creation means to the navigation device . A navigation device for guiding the vehicle to a set destination;
A distribution device for distributing updated map data for partially updating map data used in the navigation device to the navigation device;
The navigation device
Map storage means for storing the map data;
POI search means for executing a POI search process for searching for a POI designated by an input keyword and setting it as a destination ;
Distribution request means for requesting the distribution apparatus to distribute the updated map data;
History information transmission means for transmitting, as history information, a search history for each POI facility type in the POI search processing executed so far by the POI search means;
Map update means for partially updating the map data stored in the map storage means using the updated map data distributed from the distribution device;
The distribution device includes:
A plurality of update target facility types are set based on the search history for each POI facility type in the history information transmitted from the navigation device by the history information transmitting means, and candidate data corresponding to each of the set update target facility types Candidate data creation means for creating each,
A search frequency for each POI facility type in the POI search process is calculated based on a search history for each POI facility type in the history information, and an update priority corresponding to the calculated search frequency is assigned to each of the candidate data. Update priority setting means for setting,
Priority order determining means for determining a priority order for each of the candidate data based on the update priority set by the update priority setting means;
Based on the priority determined by the priority determining means and the data size of each candidate data, candidate data to be included in the updated map data is determined from the candidate data, and an updated map including the determined candidate data Update map data creation means for creating data,
A map update system comprising: update map data transmission means for transmitting the update map data created by the update map data creation means to the navigation device . A navigation device for guiding the vehicle to a set destination;
A distribution device for distributing updated map data for partially updating map data used in the navigation device to the navigation device;
The navigation device
Map storage means for storing the map data;
A city map display means for executing a city map display process for displaying a city map within a specified area ;
Distribution request means for requesting the distribution apparatus to distribute the updated map data;
History information transmitting means for transmitting, as history information, a display history of a city map for each area in the city map display processing executed so far by the city map display means;
Map update means for partially updating the map data stored in the map storage means using the updated map data distributed from the distribution device;
The distribution device includes:
A plurality of update target areas are set based on the display history of the city map for each area in the history information transmitted by the history information transmitting means from the navigation device, and candidate data corresponding to each of the set update target areas is set. Candidate data creation means to create;
Based on the display history of the city map for each area in the history information, the display frequency of the city map for each area in the city map display processing is calculated, and the update priority according to the calculated display frequency is set for each of the candidate data Update priority setting means to set for
Priority order determining means for determining a priority order for each of the candidate data based on the update priority set by the update priority setting means;
Based on the priority determined by the priority determining means and the data size of each candidate data, candidate data to be included in the updated map data is determined from the candidate data, and an updated map including the determined candidate data Update map data creation means for creating data,
A map update system comprising: update map data transmission means for transmitting the update map data created by the update map data creation means to the navigation device . A navigation device for guiding the vehicle to a set destination;
A distribution device for distributing updated map data for partially updating map data used in the navigation device to the navigation device;
The navigation device
Map storage means for storing the map data;
A registered place selecting means for performing a registered place selection processing for setting the destination one of the registered place selected from a set of predefined registered place,
POI search means for executing a POI search process for searching for a POI designated by an input keyword and setting it as a destination ;
Distribution request means for requesting the distribution apparatus to distribute the updated map data;
A selection history for each registered place in the registered place selection process executed so far by the registered place selection means and a search history for each POI facility type in the POI search process executed so far by the POI search means. , a history information transmitting unit that transmits the history information to the delivery device,
Map update means for partially updating the map data stored in the map storage means using the updated map data distributed from the distribution device;
The distribution device includes:
A plurality of update target areas based on a selection history for each registered place in the history information and a plurality of update target facility types based on a search history for each POI facility type in the history information are set, and the set selection history Candidate data creation means for creating first candidate data corresponding to each of the update target areas based on and second candidate data corresponding to each of the update target facility types based on the search history;
The selection frequency for each registered location in the registered location selection process is calculated based on the selection history for each registered location in the history information, and the POI search processing is based on the search history for each POI facility type in the history information. Update priority setting means for calculating a search frequency for each POI facility type and setting an update priority corresponding to each of the calculated selection frequency and search frequency for each of the first and second candidate data When,
Priority order determining means for determining a priority order for each of the first and second candidate data based on the update priority set by the update priority setting means;
Based on the priority determined by the priority determining means and the data size of each of the first and second candidate data, the updated map data is included in the updated map data from the first and second candidate data Update map data creating means for determining candidate data and creating updated map data including the determined candidate data;
A map update system comprising: update map data transmission means for transmitting the update map data created by the update map data creation means to the navigation device . A navigation device for guiding the vehicle to a set destination;
A distribution device for distributing updated map data for partially updating map data used in the navigation device to the navigation device;
The navigation device
Map storage means for storing the map data;
A registered place selecting means for performing a registered place selection processing for setting the destination one of the registered place selected from a set of predefined registered place,
A city map display means for executing a city map display process for displaying a city map within a specified area ;
Distribution request means for requesting the distribution apparatus to distribute the updated map data;
Selection history for each registered place in the registered place selection process executed so far by the registered place selecting means, and street map display history for each area in the town map display process executed so far by the town map display means And history information transmitting means for transmitting to the distribution device as history information ;
Map update means for partially updating the map data stored in the map storage means using the updated map data distributed from the distribution device;
The distribution device includes:
A plurality of update target areas based on the selection history for each of the registered locations in the history information and a plurality of update target areas based on the display history of the city map for each of the history information are set, and the set selection history Candidate data creation means for creating first candidate data corresponding to each of the update target areas based on the third candidate data corresponding to each of the update target areas based on the display history;
The selection frequency for each registered location in the registered location selection process is calculated based on the selection history for each registered location in the history information, and the city map display is based on the display history of the city map for each region in the history information. Update priority setting for calculating the display frequency of the city map for each area in the processing, and setting the update priority corresponding to each of the calculated selection frequency and display frequency for the first and third candidate data, respectively Means,
Priority order determining means for determining a priority order for each of the first and third candidate data based on the update priority set by the update priority setting means;
Included in the updated map data from the first and third candidate data based on the priority order determined by the priority order determining means and the data size of each of the first and third candidate data Update map data creating means for determining candidate data and creating updated map data including the determined candidate data;
A map update system comprising: update map data transmission means for transmitting the update map data created by the update map data creation means to the navigation device . A navigation device for guiding the vehicle to a set destination;
A distribution device for distributing updated map data for partially updating map data used in the navigation device to the navigation device;
The navigation device
Map storage means for storing the map data;
POI search means for executing a POI search process for searching for a POI designated by an input keyword and setting it as a destination ;
A city map display means for executing a city map display process for displaying a city map within a specified area ;
Distribution request means for requesting the distribution apparatus to distribute the updated map data;
Search history for each POI facility type in the POI search processing executed so far by the POI search means, and display history of the city map for each region in the city map display processing executed so far by the city map display means And history information transmitting means for transmitting to the distribution device as history information ;
Map update means for partially updating the map data stored in the map storage means using the updated map data distributed from the distribution device;
The distribution device includes:
The update target facility type based on the search history for each POI facility type in the history information and the update target region based on the display history of the city map for each region in the history information are each set in plural, and the set Candidate data creating means for creating second candidate data corresponding to each of the update target facility types based on the search history and third candidate data corresponding to each of the update target areas based on the display history;
A search frequency for each POI facility type in the POI search process is calculated based on a search history for each POI facility type in the history information, and based on a street map display history for each region in the history information. Update that calculates the display frequency of the city map for each area in the city map display process, and sets the update priority corresponding to each of the calculated search frequency and display frequency for the second and third candidate data, respectively. Priority setting means;
Priority order determining means for determining a priority order for each of the second and third candidate data based on the update priority set by the update priority setting means;
Included in the updated map data from the second and third candidate data based on the priority order determined by the priority order determining means and the data size of each of the second and third candidate data Update map data creating means for determining candidate data and creating updated map data including the determined candidate data;
A map update system comprising: update map data transmission means for transmitting the update map data created by the update map data creation means to the navigation device . A navigation device for guiding the vehicle to a set destination;
A distribution device for distributing updated map data for partially updating map data used in the navigation device to the navigation device;
The navigation device
Map storage means for storing the map data;
A registered place selecting means for performing a registered place selection processing for setting the destination one of the registered place selected from a set of predefined registered place,
POI search means for executing a POI search process for searching for a POI designated by an input keyword and setting it as a destination ;
A city map display means for executing a city map display process for displaying a city map within a specified area ;
Distribution request means for requesting the distribution apparatus to distribute the updated map data;
A selection history for each registration location in the registration location selection process executed by the registration location selection means, a search history for each POI facility type in the POI search processing executed so far by the POI search means, History information transmitting means for transmitting, as history information , a display history of a city map for each area in the city map display processing executed so far by the city map display means,
Map update means for partially updating the map data stored in the map storage means using the updated map data distributed from the distribution device;
The distribution device includes:
An update target area based on a selection history for each registered place in the history information, an update target facility type based on a search history for each POI facility type in the history information, and a town map for each area in the history information A plurality of update target areas based on the display history are set, and each of the first candidate data corresponding to each of the update target areas based on the set selection history and each of the update target facility types based on the search history is supported. Candidate data creating means for creating second candidate data to be created and third candidate data corresponding to each of the update target areas based on the display history;
The selection frequency for each registered location in the registered location selection process is calculated based on the selection history for each registered location in the history information, and the POI search processing is based on the search history for each POI facility type in the history information. The search frequency for each POI facility type is calculated, and the display frequency of the city map for each area in the city map display processing is calculated based on the display history of the city map for each area in the history information. Update priority setting means for setting an update priority corresponding to each of a selection frequency, a search frequency, and a display frequency for each of the first, second, and third candidate data;
Priority order determining means for determining a priority order for each of the first, second and third candidate data based on the update priority set by the update priority setting means;
Based on the priority determined by the priority determining means and the data size of each of the first, second, and third candidate data, the first, second, and third candidate data are selected from the first, second, and third candidate data. Update map data creating means for determining candidate data to be included in the update map data and creating update map data including the determined candidate data;
A map update system comprising: update map data transmission means for transmitting the update map data created by the update map data creation means to the navigation device . In the map update system as described in any one of Claims 12-15,
The map update system, wherein when determining the priority order, the priority order determining unit changes the weight of the update priority according to the type of history corresponding to each candidate data.   The navigation apparatus described in the map update system in any one of Claims 9-16. The distribution apparatus described in the map update system in any one of Claims 9-16.

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