JP2015010891A - Map differential data delivery system, map differential data delivery device, and terminal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable useless communication to be suppressed when information about traffic control is delivered.SOLUTION: A navigation device 2 is provided with: a control-time map database 243 for storing control-time map differential data and control period data delivered from a map differential data delivery server 1 and continuing to maintain the record of the control-time map differential data until all of implementation periods indicated at least by the control period data elapse; and a merge processing unit 305 for causing, if an implementation period indicated by control period data stored in the control-time map database 243 applies when a map-using application is executed by an application execution unit 303, the control-time map differential data corresponding to the control period data to be reflected temporarily in map data, and causing, if the implementation period indicated by the control period data does not apply, the control-time map differential data corresponding to the control period data not to be reflected in the map data.

Description

  The present invention relates to a map difference data distribution system, and a map difference data distribution device and a terminal device included in the map difference data distribution system.

  In Patent Document 1, traffic regulation information is distributed to a navigation device by VICS (registered trademark), which is a service that provides road traffic information to a user in real time. Techniques for displaying above are disclosed. The main purpose of traffic regulation information is to express a temporary state. Therefore, in a navigation device as a terminal device that receives distribution of traffic regulation information, traffic regulation information is generally managed as, for example, volatile information only during activation of the navigation device.

JP 2010-256031 A

  In terminal devices that receive distribution of traffic regulation information, it is common to manage traffic regulation information as volatile information. Therefore, traffic regulation is limited to traffic regulation over a long period of time such as several days or one month. It was necessary to distribute the information one by one. In addition, it is necessary to distribute traffic regulation information one by one for traffic regulations that are periodically and repeatedly implemented at specific times and days of the week.

  Therefore, there is a problem that the distribution of the same contents must be performed many times and the distribution is not efficient. In addition, there is a problem that a communication fee is wasted in a system that realizes distribution of traffic regulation information using paid wireless communication or the like.

  The present invention has been made in view of the above-described conventional problems, and its object is to provide a map differential data distribution system, a map, and the like that can suppress useless communication when distributing traffic regulation information. It is to provide a differential data distribution device and a terminal device.

  The map difference data distribution system of the present invention stores the change contents of the map element data between the map data before and after the traffic regulation as the map difference data at the time of regulation, and the regulation period indicating the implementation period of the traffic regulation A distribution side regulation difference data storage unit (122) that also stores data in association with each other, and a distribution unit (132) that delivers regulation time map difference data and regulation period data corresponding to the regulation map difference data The map difference data distribution device (1) provided, the reception unit (302) that receives the restriction map difference data and the restriction period data distributed from the distribution unit, and the restriction map difference data and the restriction period data received by the reception unit The terminal side regulation time difference that keeps the record of the regulation time map difference data until at least the implementation period indicated by the regulation period data has passed. A data storage unit (243), a map data storage unit (241) that stores map data, an application execution unit (303) that executes an application that uses map data, and an application that uses map data in the application execution unit When executing, if it corresponds to the implementation period indicated by the regulation period data stored in the terminal-side regulation difference data storage unit, the regulation map difference data corresponding to the regulation period data is temporarily stored in the map data. On the other hand, the terminal device (2) includes a merge processing unit (305) that does not reflect the map data at the time of regulation corresponding to the regulation period data when it does not correspond to the implementation period indicated by the regulation period data. It is characterized by including.

  According to this, when it corresponds to the implementation period indicated by the regulation period data, the regulation map difference data corresponding to the regulation period data is temporarily reflected in the map data, and the application using the map data is executed. Will do. The restriction map difference data is recorded in the terminal-side map difference data storage unit until at least the implementation period indicated by the restriction period data has elapsed. Therefore, the terminal stored in the terminal-side map difference data storage unit can be used even if the terminal device does not receive the distribution of the map-difference data at the time of the restriction again until the implementation period of the traffic restriction has elapsed. Therefore, it is not necessary to distribute the map difference data at the time of regulation from the map difference data distribution device. As a result, it is possible to suppress unnecessary communication when distributing traffic regulation information, to make distribution more efficient and to avoid unnecessary communication charges.

  In addition, since the map difference data distribution device and the terminal device of the present invention are included in the map difference data distribution system, it is possible to suppress useless communication when distributing traffic regulation information.

1 is a diagram illustrating an example of a schematic configuration of a map difference data distribution system 100. FIG. It is a figure which shows an example of a schematic structure of the server side memory 12 of the map difference data delivery server. It is a functional block diagram which shows an example of a schematic structure of the server side control part 14 of the map difference data delivery server 1. FIG. 3 is a diagram illustrating an example of a schematic configuration of a terminal-side memory 24 of the navigation device 2. FIG. It is a figure which shows an example of schematic structure of the control apparatus 30 of the navigation apparatus. It is a flowchart which shows an example of the process relevant to the delivery of the map difference data in the map difference data delivery server. 4 is a flowchart illustrating an example of processing related to acquisition of map difference data in the navigation device 2. It is a flowchart which shows an example of the map use related process in the navigation apparatus.

  Embodiment 1 of the present invention will be described below with reference to the drawings.

<1. Map difference data distribution system 100>
FIG. 1 is a diagram showing an example of a schematic configuration of a map difference data distribution system 100 to which the present invention is applied. A map difference data distribution system 100 shown in FIG. 1 includes a map difference data distribution server 1 and a navigation device 2. The map difference data distribution server 1 corresponds to the map difference data distribution device in the claims, and the navigation device 2 corresponds to the terminal device in the claims.

<2. Map difference data distribution server 1>
As shown in FIG. 1, the map difference data distribution server 1 includes a server-side communication unit 11, a server-side memory 12, and a server-side control unit 13. The server side communication part 11 communicates with the navigation apparatus 2 via a communication network.

  In the server-side memory 12, as shown in FIG. 2, databases such as an update map difference database (DB) 121 and a regulation map difference DB 122 are constructed. The update map difference DB 121 corresponds to a delivery side update difference data storage unit in claims, and the restriction map difference DB 122 corresponds to a delivery side restriction difference data storage unit in claims.

  The update map difference DB 121 stores update map difference data. The map difference data at the time of update is the data of the change contents of the map data caused by the version change of the map data (that is, the base map data). The base map data is data of a map (that is, an entire map) for a predetermined range such as the whole country of the country to which the map difference data distribution system 100 is applied, and indicates the arrangement of map elements. . Therefore, the map difference data at the time of update consists of the change contents of the map element data.

  Map elements are various elements constituting map data. For example, data such as road shapes, POIs (Points Of Interest), backgrounds, voices and texts indicating names, images (2D images, 3D images, and polygon images). is there. The update map difference DB 121 may be configured to store update map difference data provided from an external server (not shown). The map difference data at the time of update will be described in detail later.

  The restriction map difference DB 122 stores restriction map difference data. The map difference data at the time of regulation is the data of the change contents of the map data caused by the traffic restriction, and consists of the change contents of the map element data. The restriction map difference DB 122 also stores restriction period data indicating a traffic restriction implementation period in association with restriction map difference data.

  The restriction map difference DB 122 may be configured to store restriction time map difference data and restriction period data provided from an external server (not shown). The regulatory map difference data will be described in detail later.

  The server-side control unit 13 is mainly composed of a microcomputer including a CPU, ROM, RAM, backup RAM, I / O, etc. (all not shown). The server-side control unit 13 executes various processes by executing various control programs stored in the ROM based on various information input from the server-side communication unit 11 and the server-side memory 12.

  Moreover, the server side control part 13 is provided with the difference data extraction part 131 and the delivery part 132 as a functional block as shown in FIG. Details of processing in the server-side control unit 13 will be described later.

<2-1. Update map difference data>
The update map difference data stored in the update map difference DB 121 will be described. The map difference data at the time of update is the difference between the map data before and after the version change of the map data. In other words, this difference is a change in the data of the map element updated in each version.

  For example, map element data changes due to map data version changes include road additions due to road opening, road deletions due to road closures, road shape changes, facility additions, deletions, changes, intersections, directions and roads. There are additions, deletions and changes of names such as. The update map difference DB 121 stores update map difference data for each version.

  In the map difference data at the time of update, for example, for each updated version, an ID (hereinafter referred to as difference group ID) that identifies the difference group for a group of updated map element data (hereinafter referred to as difference group). Are given in order. For example, when the updated content of the map element is an addition of a road section sandwiching an intersection, the difference group becomes data indicating addition of link data and node data representing the road section.

<2-2. Regulation map difference data>
The restriction map difference data stored in the restriction map difference DB 122 will be described. The map difference data at the time of regulation is a difference between map data before and after traffic regulation. In other words, this difference is a change in the data of the map element that is temporarily changed by traffic regulation. Examples of traffic restrictions include road closures, speed restrictions, lane restrictions, and chain restrictions.

  For example, changes in map element data due to traffic restrictions include road deletion due to traffic closure, road attribute changes due to speed restrictions, lane restrictions, and chain restrictions. The restriction map difference DB 122 stores restriction map difference data for each independent traffic restriction.

In the map difference data at the time of regulation, as an example, an ID (that is, a difference group ID) for identifying the difference group is sequentially assigned to a group of data of map elements (that is, a difference group) changed by traffic regulation. Has been. The difference group is data indicating deletion of link data representing a road section when, for example, the change content of the map element changed by traffic regulation is a road section that does not sandwich an intersection.
<2-3. Regulatory period data>
The restriction period data stored in the restriction time map difference DB 122 will be described. The restriction period data is data indicating the traffic restriction implementation period represented by the restriction map difference data corresponding to this data. The regulation period data may be a set of the start date and time and the end date and time of the traffic regulation, for example, in the case of traffic regulation executed once every certain period such as several days or one month.

  In addition, for example, in the case of traffic regulation that is periodically and repeatedly implemented in a specific time zone, the regulation period data is a set of a start date and an end date of traffic regulation, and a set of start time and end time at the time of implementation. And it is sufficient. In addition, for example, in the case of traffic regulation that is periodically and repeatedly implemented on a specific day of the week and date, the regulation period data may be a set of the start date and end date of traffic regulation, and the day and date of implementation. Good. Moreover, these combinations may be sufficient.

<3. Navigation device 2>
The navigation device 2 may be an in-vehicle navigation device or a portable navigation device that can be brought into a vehicle. When the navigation device 2 is a portable type, the navigation device 2 may be configured to be used when moving in a vehicle such as an automobile, a motorcycle, or a bicycle, or when the user carrying the navigation device 2 is walking on foot. It is good also as a structure used for. Hereinafter, the case where an in-vehicle navigation device is used as the navigation device 2 will be described as an example. The navigation device 2 corresponds to the terminal device in the claims.

  When a portable terminal is used as the navigation device 2 and information is acquired from a system such as a vehicle-mounted LAN of the vehicle, the navigation device 2 includes a system such as the vehicle-mounted LAN of the vehicle and a publicly known system such as Bluetooth (registered trademark). A configuration may be adopted in which information is acquired by performing communication such as wireless communication or wired communication through USB connection.

  Here, a schematic configuration of the navigation device 2 will be described. As shown in FIG. 1, the navigation device 2 includes a communication device 21, a position detector 22, an external input interface (I / F) unit 23, a terminal-side memory 24, a display device 25, a voice output device 26, an operation switch group 27, A remote control terminal (hereinafter referred to as remote control) 28, a remote control sensor 29, and a control device 30 are provided.

  The communication device 21 communicates with the map difference data distribution server 1 via a communication network. As the communication device 21, various devices such as an in-vehicle communication module such as a DCM (data communication module) used for telematics communication can be employed.

  Each of the position detectors 22 has a known acceleration sensor, gyroscope, and receiver for a satellite positioning system such as GPS (Global Positioning System) that detects the position of the device based on radio waves from the satellite. The current position of the user of the user apparatus (hereinafter referred to as user position) is sequentially detected. For example, the user position is assumed to be coordinates represented by latitude and longitude. Note that the position detector 22 may be configured by a part of the sensors described above, or may be configured using another sensor.

  The external input I / F unit 23 is an interface for the control device 30 to acquire vehicle state information from ECUs and sensors mounted on the vehicle. For example, it is assumed that vehicle state information is input to the external input I / F unit 23 from an ECU or a sensor mounted on the vehicle via an in-vehicle LAN or the like. An example of the vehicle state information includes an on / off signal of an accessory (ACC) power source.

  As shown in FIG. 4, databases such as a base map DB 241, an update map difference DB 242, and a restriction map difference DB 243 are constructed in the terminal-side memory 24. The terminal side memory 24 is assumed to be a nonvolatile memory. The base map DB 241 corresponds to the claim map data storage unit, the update time map difference DB 242 corresponds to the terminal side update time difference data storage unit of the claims, and the restriction time map difference DB 243 corresponds to the terminal side restriction time difference of the claims. Corresponds to the data storage unit.

  The base map DB 241 stores the aforementioned base map data. The base map data stored in the base map DB 241 may be acquired by the control device 30 being downloaded from a center (not shown) through the communication device 21 or may be stored in advance.

  The update map difference DB 242 stores the update map difference data received by the navigation device 2 from the map difference data distribution server 1. The restriction map difference DB 243 stores restriction time map difference data and restriction period data that the navigation device 2 has received from the map difference data distribution server 1.

  The regulation time map difference DB 243 continues to maintain the regulation time map difference data corresponding to the regulation period data until all the traffic regulation implementation periods indicated by the regulation period data have elapsed. Further, as an example, the restriction-time map difference DB 243 may be configured to delete the record of restriction-time map difference data corresponding to the restriction period data when all the traffic restriction implementation periods indicated by the restriction period data have elapsed. Good. Note that the control device 30 determines whether or not all the executing agencies have passed and instructs to delete the record of the regulatory map difference data.

  The display device 25 is capable of full color display, for example, and can be configured using a liquid crystal display, an organic EL display, or the like. The voice output device 26 includes a speaker or the like, and outputs a guidance voice or the like based on an instruction from the control device 30.

  For example, a touch switch or a mechanical switch integrated with the display device 25 is used as the operation switch group 27, and an operation instruction for various functions is given to the control device 30 by a switch operation. The remote controller 28 is provided with a plurality of operation switches (not shown). By inputting various command signals to the control device 30 via the remote control sensor 29 by the switch operation, the same function as the operation switch group 27 is provided. Can be executed.

  The control device 30 is mainly configured by a microcomputer including a CPU, ROM, RAM, backup RAM, and the like. The control device 30 executes various processes based on various information input from the communication device 21, the position detector 22, the external input I / F unit 23, the terminal-side memory 24, the operation switch group 27, and the remote control sensor 29. To do.

  Further, as illustrated in FIG. 5, the control device 30 includes a transmission processing unit 301, a reception processing unit 302, an application execution unit 303, a period determination unit 304, and a merge processing unit 305 as functional blocks. It has. Details of the processing in the control device 30 will be described later.

<4. Distribution of map difference data in map difference data distribution server 1>
Processing related to distribution of map difference data such as update map difference data and restriction map difference data in the map difference data distribution server 1 will be described using the flowchart of FIG. 6. The flowchart of FIG. 6 may be configured to start when the map difference data distribution server 1 is turned on and end when the power is turned off, for example.

  First, in step S1, when it is the distribution timing of the map difference data (YES in step S1), the process proceeds to step S2. On the other hand, when it is not the distribution timing of the map difference data (NO in step S1), the process returns to step S1 and the flow is repeated.

  As an example of the distribution timing of the map difference data, it may be when the extraction information necessary for extracting the map difference data necessary for distribution is received from the navigation device 2 or the portable terminal 3.

  The extraction information may be configured to be transmitted from the navigation device 2 triggered by the fact that the navigation device 2 detects that the ACC power is turned on or the destination is set. In addition, it may be configured to be transmitted from the navigation device 2 when triggered by an operation input requesting the operation switch group 27 or the remote control 28 of the navigation device 2 to update the map data.

  The extraction information is, for example, the user position of the navigation device 2, the version of the base map data stored in the terminal-side memory 24 of the navigation device 2, identification information for specifying the transmission source, and the like. The extraction information when the destination setting is performed may be configured to include the coordinates of the destination in addition to the information described above.

  As the user position, the user position detected by the position detector 22 may be used. The identification information may be a device ID of the navigation device 2 or the communication device 21, or a vehicle ID of a vehicle on which the navigation device 2 is mounted. Hereinafter, the case where the identification information is a device ID will be described as an example.

  In step S2, the difference data extraction unit 131 performs map difference data extraction processing, and proceeds to step S3. In the map difference data extraction process, the navigation device 2 (hereinafter referred to as the distribution destination) is obtained from the update-time map difference data stored in the update-time map difference DB 121 and the restriction-time map difference data stored in the restriction-time map difference DB 122. , Distribution target) and undelivered map difference data at the time of update and map difference data at the time of regulation are extracted. Specifically, a difference group that has not been distributed to the distribution target is extracted. Further, when the regulation time map difference data is extracted, the regulation period data associated with the regulation time map difference data is also extracted from the regulation time map difference DB 122.

  As an example, the map difference data distribution server 1 stores determination information for each distribution target for determining map difference data that has already been distributed to the distribution target, and is received from the determination information and the distribution target. Based on the extracted information, the configuration may be such that undistributed map difference data is extracted.

  The device ID included in the extraction information is used to specify the determination information corresponding to the distribution target, and the user position and the destination included in the extraction information indicate the region from which the map difference data is to be extracted. Used to identify. In addition, when it is not necessary to limit the area from which the map difference data is extracted to a part, the extraction information may not include the user position or the destination.

  The determination information may be configured to store, for example, version information that has been distributed to a distribution target and a difference group ID that has been distributed. This is because the distributed difference group can be determined if the distributed version information and the distributed difference group ID are known. As the determination information, a flag is set for a distributed difference group (that is, map difference data) so that it can be determined whether or not the difference group has been distributed. Good. The distributed version information and the distributed difference group ID are managed by the map difference data distribution server 1 based on the map data version included in the received extraction information and the distribution result of the map difference data. And it is sufficient.

  In step S3, the distribution unit 132 distributes the update-time map difference data and the restriction-time map difference data extracted in step S2 to distribution targets. And it returns to step S1 and repeats a flow. When distributing the restriction map difference data, the restriction period data associated with the restriction map difference data is also distributed.

  The distribution of the map difference data is a configuration in which the URL indicating the storage location of the map difference data extracted in step S2 and the regulation period data is transmitted to the distribution target, and distributed when the URL is accessed from the distribution target. Also good. The map difference data and the regulation period data extracted in step S2 may be stored in a server other than the map difference data distribution server 1, and the map difference data distribution server 1 may transmit a URL indicating the storage location to the distribution target. Good.

  In the flowchart of FIG. 6, the case where the navigation device 2 receives distribution of map difference data from the map difference data distribution server 1 has been described as an example, but the present invention is not necessarily limited thereto. For example, a memory card that is removable from the navigation device 2 is connected to a PC, the map difference data distribution server 1 receives distribution of map difference data from the PC, and the received map difference data is stored in the memory card. Also good. In this case, the PC to which this memory card is connected corresponds to the terminal device in the claims. The above-described device ID may be stored in the memory card, and the device ID may be transmitted from the PC to the map difference data distribution server 1 as the above-described extraction information.

  According to the above configuration, as described above, extraction / distribution of undelivered map difference data at the time of restriction can be performed collectively in the same manner as extraction / distribution of update map difference data. Therefore, for the distribution of the map difference data at the time of regulation, it is possible to save the trouble of preparing a system different from that used for the distribution of the map difference data at the time of update or preparing a program for executing significantly different processing. be able to.

<5. Acquisition of map difference data in navigation device 2>
Processing related to acquisition of map difference data such as update map difference data and restriction map difference data in the navigation device 2 will be described using the flowchart of FIG. 7. The flowchart in FIG. 7 may be configured to start, for example, when the ACC power supply of the host vehicle is turned on.

  First, in step S21, the transmission processing unit 301 transmits the above-described extraction information to the map difference data distribution server 1 via the communication device 21, and proceeds to step S22. As described above, the transmission of the extraction information is not limited to when the vehicle ACC power is turned on, but may be configured to be performed at another timing such as when setting a destination.

  In step S22, when the reception processing unit 302 receives the map difference data or the like distributed from the map difference data distribution server 1 in response to the transmission of the extraction information (YES in step S22). Moves to step S23. On the other hand, if it has not been received (NO in step S22), the flow ends. The reception processing unit 302 corresponds to the receiving unit in the claims.

  The determination of presence / absence of reception may be performed based on whether or not reception has been performed for a predetermined time or more, or may be determined based on whether or not data indicating that undistributed map difference data does not exist is received. The map difference data and the like referred to herein are update map difference data, restriction map difference data, and restriction period data.

  In step S <b> 23, when the reception processing unit 302 receives the update map difference data, the update map difference data is stored in the update map difference DB 242. When the reception processing unit 302 receives the restriction map difference data and the restriction period data, the restriction processing map difference data and the restriction period data are stored in the restriction map difference DB 243. Then, the flow ends.

<6. Merge Process in Navigation Device 2>
With reference to the flowchart of FIG. 8, processing (map use related processing) related to execution of an application using map data in the navigation device 2 will be described. The flowchart of FIG. 8 may be configured to start when, for example, the ACC power supply of the own vehicle is turned on.

  First, in step S41, when the application execution unit 303 activates an application using map data (hereinafter referred to as a map use application) (YES in step S41), the process proceeds to step S43. On the other hand, when the application execution unit 303 does not activate the map use application (NO in step S41), the process proceeds to step S46. As an example, the map use application may be activated when an operation input for activating the map use application is performed by the operation switch group 27 or the remote controller 28.

  In step S <b> 42, the period determination unit 304 determines whether or not the current date / time falls within the restriction period indicated by the restriction period data stored in the restriction time map difference DB 243. Whether the current date / time falls within the regulation period is determined by whether the current date / time is included in the certain period when the regulation period is a traffic regulation period that is implemented once every certain period. Further, when the regulation period is a traffic regulation period that is periodically and repeatedly performed in a specific time zone, it is determined whether the current time is included in the specific time zone.

  As an example, it is determined that the restriction period data stored in the restriction time map difference DB 243 corresponds to the restriction period data indicated by the restriction period data that includes the current date and time. On the other hand, it is determined that the restriction period data stored in the restriction time map difference DB 243 is not applicable when none of the restriction period data indicated by the restriction period data includes the current date and time. The current date and time may be obtained from time measuring means (not shown).

  If it is determined that the current date falls within the restriction period (YES in step S42), the process proceeds to step S43. On the other hand, if it is determined that the current date does not correspond to the regulation period (NO in step S42), the process proceeds to step S44.

  In the present embodiment, the configuration for determining whether or not the current date / time falls within the regulation period is shown, but the present invention is not necessarily limited thereto. For example, it is good also as a structure which determines whether the arrival time to the point which is scheduled to reach | attain in the future corresponds to a control period. As a situation where such a configuration is adopted, when calculating the recommended route from the current location to the destination, map data corresponding to the presence or absence of traffic control around the destination at the expected arrival time is required. There are some cases. For example, if it is a point scheduled to reach 30 minutes after the current time, it is determined whether or not it falls within the regulation period 30 minutes later.

  In step S43, the merge processing unit 305 performs the first merge process, and proceeds to step S45. In the first merge process, the base map data stored in the base map DB 241, the update map difference data stored in the update map difference DB 242, and the restriction map difference stored in the restriction map difference DB 243 Read data and. And map data (henceforth combined map data) which combined these is obtained.

  The combined map data is, for example, temporary data that is used only during the execution of the map use application, and is not held in the navigation device 2 until after the map use application ends. The combined map data is newly generated every time the map use application is activated.

  In the combined map data that combines the base map data, the map difference data at the time of update, and the map difference data at the time of regulation, the map element data indicated by the map difference data at the time of update and the map difference data at the time of regulation is included in the base map data. The changes are reflected. Therefore, the change of the data of the map element by the latest version change within the range of the distributed data and the change of the data of the map element by traffic regulation are reflected. For example, a change in map element data due to a closed road is reflected, so that combined map data from which a link of a closed road section is deleted is temporarily obtained.

  In step S44, the merge processing unit 305 performs the second merge process, and proceeds to step S45. In the second merge process, the base map data stored in the base map DB 241 and the update map difference data stored in the update map difference DB 242 are read. And combined map data which combined these is obtained.

  In the combined map data obtained by combining the base map data and the update map difference data, the change contents of the map element data indicated by the update map difference data are reflected in the base map data. Therefore, the change of the map element data by the latest version change within the range of the distributed data is reflected. In the second merging process, the map difference data at the time of regulation is not combined with the combined map data, so changes in map element data due to traffic restrictions are not reflected.

  In the first merge process and the second merge process, when a plurality of versions of base map data are stored in the base map DB 241, the latest version of the base map data is read and used.

  In step S45, the application execution unit 303 executes the map use application using the map data obtained by the merge processing in the merge processing unit 305, and proceeds to step S46. That is, if the first merge process is performed in the step before step S45, the map use application is executed using the map data obtained by the first merge process. On the other hand, when the second merge process is performed in the step before step S45, the map use application is executed using the map data obtained by the second merge process.

  According to this, when the current date / time falls within the traffic regulation period, the map use application is executed using the map data reflecting the change of the map element data by the traffic regulation, while the current date / time is traffic. If it does not fall within the regulation period, the map use application is executed using map data that does not reflect changes in map element data due to the traffic regulation.

  In step S46, when it is the end timing of the map use related process (YES in step S46), the flow is ended. On the other hand, if it is not the end timing of the map use related process (NO in step S46), the process returns to step S41 and the flow is repeated. As an example of the end timing of the map use related process, there is a time when the map use application is finished or the ACC power supply of the own vehicle is turned off.

<7. Summary of Embodiment 1>
According to Embodiment 1, when it corresponds to the implementation period indicated by the regulation period data, the map-use application is temporarily reflected in the base map data with the map difference data at the time of regulation corresponding to the regulation period data. Will be executed. The restriction map difference data is recorded in the restriction map difference DB 243 until at least the implementation period indicated by the restriction period data has elapsed.

  Therefore, the navigation device 2 can use the data stored in the restriction map difference DB 243 even if the navigation device 2 does not receive the distribution of restriction map difference data again until the traffic restriction implementation period has elapsed. As a specific example, it is not necessary to receive the traffic regulation information every time the navigation device 2 is activated for traffic regulation over a long period of time such as several days or one month. In addition, for traffic regulations that are regularly and repeatedly implemented in specific time zones, days of the week, etc., because the regulation map difference data is periodically read from the regulation map difference DB 243 and reflected in the map data, There is no need to regularly receive this traffic regulation information.

  Therefore, it is not necessary to distribute the map difference data at the time of regulation from the map difference data distribution server 1 one by one. Further, the navigation device 2 does not need to receive the map difference data at the time of restriction for the same traffic restriction from the map difference data distribution server 1 one by one. As a result, it is possible to suppress unnecessary communication when distributing traffic regulation information, to make distribution more efficient and to avoid unnecessary communication charges.

<8. Modification 1>
In the first embodiment, the map difference data distribution server 1 extracts the map difference data that has not been distributed to the distribution destination navigation device 2. However, the present invention is not limited to this. For example, a server (hereinafter referred to as an update management server) that extracts map difference data that has not been distributed to the navigation device 2 by storing the above-described determination information separately from the map difference data distribution server 1 in the map difference data distribution system 100. ). In this case, it is assumed that the management of the discrimination information described above is also performed by the update management server.

<9. Modification 2>
In the first embodiment, the map difference data distribution system 100 does not include a server (hereinafter referred to as an update map difference data generation server) that generates update map difference data from map data before and after update each time map data is updated. Although the configuration is shown, it is not necessarily limited to this. For example, the map difference data distribution system 100 may include an update map difference data generation server. Further, the update map difference data generation server may be integrated with the map difference data distribution server 1.

<10. Modification 3>
In the first embodiment, the map difference data distribution system 100 has a configuration that does not include a server that generates restriction map difference data (hereinafter referred to as restriction map difference data generation server). However, the present invention is not limited to this. For example, the map difference data distribution system 100 may include a restriction map difference data generation server. Further, the restriction map difference data generation server may be integrated with the map difference data distribution server 1.

<11. Finally>
The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the technical means disclosed in different embodiments can be appropriately combined. Such embodiments are also included in the technical scope of the present invention.

1 map difference data delivery server (map difference data delivery device), 2 navigation device (terminal device), 100 map difference data delivery system, 122 regulation time map difference DB (delivery side regulation time difference data storage unit), 132 delivery unit, 241 Base map DB (map data storage unit), 243 restriction map difference DB (terminal side difference data storage unit), 302 reception processing unit (reception unit), 303 application execution unit, 305 merge processing unit

Claims (5)

Distribution that stores changes in map element data between map data before and after traffic regulation as map difference data at the time of regulation, and also stores regulation period data indicating the implementation period of the traffic regulation. Side regulation difference data storage unit (122),
A map difference data distribution device (1) comprising a distribution unit (132) for distributing the restriction map difference data and the restriction period data corresponding to the restriction map difference data;
A receiving unit (302) that receives the restriction map difference data and the restriction period data distributed from the distribution unit;
At the time of terminal-side control, the control-time map difference data and the control-period data received by the receiving unit are stored, and at least until the implementation period indicated by the control-period data has elapsed, the record of the control-time map difference data is maintained. A difference data storage unit (243);
A map data storage unit (241) storing map data;
An application execution unit (303) for executing an application using the map data;
When executing the application using the map data in the application execution unit, if it corresponds to the implementation period indicated by the regulation period data stored in the terminal side regulation difference data storage unit, the regulation period data While the corresponding map difference data at the time of regulation is temporarily reflected in the map data, the map difference data at the time of regulation corresponding to the regulation period data when the regulation period data does not correspond to the implementation period indicated by the map data A map difference data distribution system comprising: a terminal device (2) provided with a merge processing unit (305) that is not reflected on the map. In claim 1,
The map difference data distribution device
The map element data changes between the map data of the version before updating the map element data and the map data of the version after updating the map element data are stored as the map difference data at the time of update. A distribution-side update difference data storage unit (121);
The distribution unit of the map difference data distribution device also distributes the update map difference data,
The receiving unit of the terminal device also receives update map difference data distributed from the distribution unit,
The terminal device
A terminal side update difference data storage unit (242) for storing the update map difference data received by the receiving unit;
The merge processing unit of the terminal device,
When executing the application using the map data in the application execution unit,
When the restriction period data stored in the terminal side restriction time difference data storage unit corresponds to the implementation period indicated by the restriction period data, the restriction time map difference data corresponding to the restriction period data, and the terminal side update time While temporarily updating the map difference data at the time of update stored in the difference data storage unit to the map data,
If the regulation period data does not correspond to the implementation period, the regulation-time map difference data corresponding to the regulation period data is stored in the terminal-side update-time difference data storage unit without being reflected in the map data. A map difference data distribution system characterized in that the updated map difference data is temporarily reflected in map data. In claim 1 or 2,
The map data distribution system according to claim 1, wherein the restriction period data also includes data indicating a periodic execution period of traffic restriction that is periodically repeated.   The map difference data delivery apparatus used by the map difference data delivery system (100) in any one of Claims 1-3.   A terminal device used in the map difference data distribution system (100) according to any one of claims 1 to 3.

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