JP7232793B2 - Map output device, map output system and program - Google Patents

Description

The present invention relates to a map output device, a map output system, and a program for outputting maps.

Conventionally, there is a technology related to the security of map data used in navigation systems (for example, Patent Document 1).

In the technique disclosed in Patent Document 1, when a recording medium storing map data is attached to a navigation unit for the first time, update right information necessary for updating map data is read from the recording medium and the update right information is recorded. Removed from media. The navigation unit creates an update deadline for the map data based on the update right information, and stores the created update deadline together with the medium identification information.

Patent Literature 1 states that a navigation system can update map data by using update right information and an update deadline created from the update right information, without the map data being illegally copied. It is

JP 2011-169825 A

However, in the navigation unit disclosed in Patent Document 1, one recording medium has two
It cannot be prevented from being reused by the above navigation systems.

An object of the present invention is to provide a map output device, map output system,
and to provide the program.

A map output device according to a first aspect of the present disclosure is mounted on a mobile object. The map output device includes a connection section, an output section, and a control section. The connection section is connected to the recording medium. The recording medium stores map data. The output unit outputs map data. A control unit controls the connection unit. Also, the control section controls the output section. The controller is configured to write the file to the recording medium. The file contains eigenvalue information. The eigenvalue is a character string corresponding to the moving object. A file is written to the recording medium when the recording medium is connected to the connecting section. Alternatively, the file is written to the recording medium when the mobile body is used beyond a predetermined amount of usage. Further, the control section is configured to cause the output section to output the map data. Map data is read from a recording medium. A recording medium stores a file containing information on the eigenvalues. The eigenvalues correspond to moving objects.

The map output device of the first aspect records a file indicating a unique value corresponding to a moving body when a recording medium is connected to the connecting portion or when the moving body is used beyond a predetermined usage amount. Since the map data is stored in a medium and the map data is read from the recording medium, the storage medium from which the map data is read can be limited. Therefore, the map output device can prevent the map data from being read from the recording medium used in another map output device, thereby preventing the recording medium from being reused.

In the map output device according to the second aspect of the present disclosure, the amount of usage is obtained based on the length of movement of the moving body. Alternatively, the usage amount is obtained based on the period during which the map data was output to the output unit.

The map output device of the second aspect can easily obtain the usage of the moving body.

In the map output device according to the third aspect of the present disclosure, files are stored in advance in the recording medium. The file contains initial value information. The initial value is any character string. The control unit is also configured to read map data from a recording medium in which a file containing initial value information is stored. Further, the control unit is configured to overwrite the file containing the initial value information stored in the recording medium with the file containing the unique value information. File overwriting occurs when the mobile moves more than a predetermined length.

The map output device of the third aspect can simplify the process of reading the map data from the recording medium by overwriting the file containing the initial value information with the file containing the unique value information.

In the map output device according to the fourth aspect of the present disclosure, each file further includes version information indicating the version of the map data. The file is a file containing initial value information or a file containing unique value information. The control unit is configured to write a file containing the information of the initial value or the unique value and the version information of the updated map data to the recording medium. This file is written when the map data is updated. The updated map data is the map data stored in the recording medium.

The map output device of the fourth aspect can store information that matches the current situation in the recording medium even if the map data is updated.

A map output system according to a fifth aspect of the present disclosure includes a map output device mounted on a mobile object and a server. The map output device includes a connection section, an output section, and a control section. The connection is
Connected to a recording medium. Map data is stored in the recording medium. The output unit outputs map data. A control unit controls the connection unit. Also, the control section controls the output section. The controller is configured to write the file to the recording medium. A recording medium is a recording medium connected to the connection section. The file contains eigenvalue information. The eigenvalue is a character string corresponding to the moving object. The file also contains version information indicating the version of the map data.
A file is written to the recording medium when the recording medium is connected to the connecting section. Alternatively, the file is written to the recording medium when the mobile body is used beyond a predetermined amount of usage. Further, the control section is configured to cause the output section to output the map data. The map data is map data read from a recording medium. A recording medium stores a file containing unique value information and version information. The eigenvalues correspond to moving objects. The server is configured to create files. The file includes version information and eigenvalue information of updated map data. A file is created when the map data is updated. The updated map data is the map data stored in the recording medium.

The map output system of the fifth aspect is configured to read map data from a recording medium in which a file containing information of unique values corresponding to moving objects is stored. can be limited. Therefore, the map output system can prevent the map output device from reading the map data from the recording medium used in other map output devices, thereby preventing the recording medium from being reused. Also, even if the map data is updated, a file containing information that matches the current situation can be created by the server and stored in the recording medium.

In the map output system according to the sixth aspect of the present disclosure, the server further includes a storage unit. A predetermined encryption key is stored in the storage unit. The server is configured to encrypt files. Encryption is based on encryption keys. The file is a file containing updated map data version information and unique value information. File encryption is performed when the map data stored in the recording medium is updated.

The map output system of the sixth aspect does not require an update unit such as a personal computer to store an encryption key, and can handle security.

In the map output system according to the seventh aspect of the present disclosure, files are stored in advance in the recording medium. The file contains initial value information. The initial value is any character string. The file also contains the version information. The control unit is also configured to read map data from a recording medium in which a file containing initial value information is stored. The server is configured to create files. The created file contains version information of the updated map data. The created file also contains initial value information. The file is created when map data is updated. The map data is map data stored in a storage medium.

The map output system of the seventh aspect can prevent the storage medium from being reused and update the map data stored in the storage medium even before the file containing the fixed value information is created.

In the map output system of the eighth aspect, the recording medium pre-stores medium identification information. The medium identification information is information for distinguishing from other recording media. The map output device is configured to write the license file to the recording medium. The license file is
It includes map data version information and medium specific information. The map data is map data stored in a recording medium. Writing of the license file is performed when the recording medium is connected to the connection section. The server is configured to determine the deadline. The time limit is the time limit for updating the map data stored in the recording medium. Determining the deadline is based on the license file.

The map output system of the eighth aspect can appropriately update the map data stored in the recording medium.

According to the present invention, it is possible to prevent a recording medium from being reused in two or more map output devices.

FIG. 1 is a configuration diagram showing the configuration of a map output system that is an embodiment of the present invention. FIG. 2 is a table showing types of data stored in the SD card for each situation. FIG. 3 is a flowchart showing activation processing of the navigation device. FIG. 4 is a flowchart showing map data update processing using the navigation device. FIG. 5 is a flowchart showing map data update processing using a PC. FIG. 6 is a flowchart showing map update processing in a modification. FIG. 7 is a block diagram showing an example of the hardware configuration of the navigation device according to this embodiment.

FIG. 1 is a configuration diagram showing the configuration of a map output system 1 that is an embodiment of the present invention. The map output system 1 of this embodiment includes an SD (secure digital) card 2, a navigation device 3, a first server 4, a second server 5, and a personal computer (Personal Computer).
r) 6.

The SD card 2 includes a medium management section 23, a card storage section 21, and a card control section 22, as shown in FIG. The SD card 2 corresponds to a recording medium.

The navigation device 3 includes an output unit 31, a navigation storage unit 32, an input/output unit 39, an SD host module 33, a navigation control unit 34, and a navigation communication unit 35, as shown in FIG. The navigation device 3 corresponds to a map output device.

The map output system 1 includes two servers, a first server 4 and a second server 5, as shown in FIG. In this embodiment, the first server 4 and the second server 5 are managed by different organizations. The first server 4 includes a first server storage unit 41 and a first server communication unit 4
2 and a first server control unit 43 . The second server 5 includes a second server storage section 51 , a second server communication section 52 and a second server control section 53 .

The personal computer 6 includes a display unit 61, a PC storage unit 62, a PC communication unit 63,
It has an SD interface 64 and a PC control unit 65 . Hereinafter, the personal computer 6 is also simply referred to as PC6.

When the SD card 2 is inserted, the navigation device 3 reads the map data stored in the SD card 2, and outputs the position of the vehicle equipped with the navigation device 3 and the route to the destination to the output unit 31. is configured to display on

The SD card 2 is a genuine product. A genuine SD card 2 is, for example, an SD card 2 recognized as genuine by the manufacturer or distributor of the navigation device 3 . The SD card 2 is sold as a set with the navigation device 3, or the SD card 2 is sold alone. An SD card described without a reference sign indicates a non-genuine SD card. The non-genuine SD card is, for example, a commercially available SD card.

In this embodiment, the navigation device 3 is configured not to read map data from the SD card and not start up when a non-genuine SD card is inserted.

Also, the navigation device 3 prevents the inserted SD card 2 from being used by other navigation devices 3 installed in other vehicles, even if it is the same model as the navigation device 3. It is configured to be able to process "lock".

As described above, the map output system 1 is configured so that the navigation device 3 can limit the SD card 2 from which map data is read, and can prevent the SD card 2 from being reused by two or more navigation devices 3. .

<<Configuration of SD card 2>>
The card control section 22 controls the medium management section 23 and the card storage section 21 respectively.

The medium management unit 23 is a memory in which data cannot be rewritten by the user using the PC 6 or the like. The SD card 2 is basically configured so that data can be written in the medium management section 23 only by the manufacturer.

The medium management unit 23 pre-stores medium identification information of the SD card 2 itself. The medium identification information is information for identifying the SD card 2 . The medium identification information is set to information different from that of other SD cards 2 . The medium identification information stored by the medium management unit 23 cannot be rewritten. Part of the medium specific information includes specific information. Specific information, for example,
It is set according to the type of the navigation device 3 that the SD card 2 corresponds to.

The card storage unit 21 is configured to store various types of information. In this embodiment, the card storage unit 21 stores at least map data, a vehicle identification file, and a license file. The vehicle identification file is a file for preventing the SD card 2 from being reused. The license file is a file for managing the time limit during which map data stored in the SD card 2 can be updated. Hereinafter, the deadline for updating the map data stored in the SD card 2 is also referred to as the update deadline.

The map data includes various information necessary for route guidance and map display. The map data includes road information and facility information. Road information is represented by a combination of nodes and links. A node is set, for example, at an intersection or at the end of a road. A link is set, for example, at a position connecting adjacent nodes. The facility information is information representing buildings and POIs (points of interest). The newer the version of the map data, the more suitable it is for the current situation.

The map data is composed of data corresponding to a plurality of parcels, for example. Parcels are set by dividing the earth's surface into rectangles of a predetermined size based on latitude and longitude.

The map output system 1 is configured so that the map data stored in the SD card 2 can be updated. Updating of map data is performed via the navigation device 3 or the PC 6 . The navigation device 3 is also simply referred to as the navigation device 3 hereinafter. Below, SD
Updating the map data stored in the card 2 is simply referred to as map update.

The navigation device 3 is configured to automatically update the map. The navigation device 3 is configured to download the map difference data from the first server 4 at a predetermined timing and write the downloaded map difference data to the SD card 2 . The map difference data is the map data of the part that is different from the map data of the previous version. The map difference data is acquired in parcel units, for example. The navigation device 3 can output to the output unit 31 map data in which part of the map data stored in the SD card 2 has been updated with the map difference data. By using the map difference data for map updating, the time required for map updating can be shortened compared to the case where the entire map data is downloaded.

The map update via PC6 uses the update tool installed in PC6,
done by the user. The update tool is dedicated software for updating maps.
The update tool is programmed to download update map data from the second server 5 to the PC 6 and overwrite the map data stored in the SD card 2 with the downloaded update map data.

A vehicle identification file is stored in the SD card 2 in advance. The vehicle identification file is encrypted and stored in the SD card 2. - 特許庁

FIG. 2 is a table showing types of data stored in the SD card 2 for each situation. As shown in FIG. 2, the vehicle identification file includes vehicle identification value information, medium identification information, and version information. The version information is information indicating the version of the map data. Hereinafter, the version of map data is also described as a map version. The version information included in the vehicle identification file is the version information of the map data stored in the SD card 2. FIG.

The vehicle specific value information is involved in vehicle locking as described above. A vehicle specific value is a predetermined character string. A character string includes at least one of numbers, letters, symbols, and the like. Information of the same vehicle specific value is stored in advance in each of the two or more genuine SD cards 2 .
In other words, the normal SD card 2 corresponding to the navigation device 3 is pre-stored with a vehicle identification file including information on the same vehicle identification value. Hereinafter, the same vehicle identification value for two or more genuine SD cards 2 is also referred to as an initial value.

The navigation control unit 34 changes the information of the vehicle identification value included in the vehicle identification file from the information of the initial value to the information of the peculiar value when the vehicle equipped with the navigation device 3 travels over a predetermined traveling distance. is configured to The navigation control unit 34 sets the unique value based on the vehicle identification information. The vehicle specific information is unique and unique information that each vehicle has,
Each vehicle is different. The navigation control unit 34 creates unique value information based on the vehicle identification information by, for example, a hash method. Therefore, the eigenvalue is a different character string for each vehicle. The process of changing the initial value information contained in the vehicle identification file to the unique value information is the vehicle lock. By changing the vehicle specific value information from the initial value information to the unique value information,
The SD card 2 is tied to a specific vehicle. The vehicle-locked SD card 2 can be used only in the navigation device 3 mounted in the associated vehicle.

Note that the distance traveled corresponds to the usage amount. Usage is a parameter that represents the extent to which the vehicle has been used. The case where the vehicle has traveled over the predetermined mileage corresponds to the case where the vehicle has been used beyond the predetermined usage amount.

The vehicle identification file as described above is an SD file from which the navigation device 3 reads map data.
It is used as a file for limiting the card 2 and preventing the SD card 2 from being reused.

The SD card 2 stores a license file. As shown in FIG. 2, the license file indicates vehicle identification value information, medium identification information, and version information. The navigation control unit 34 is configured to create a license file and store the created license file in the SD card 2 when the SD card 2 is inserted into the SD host module 33 . The license file is encrypted and stored in the SD card 2.

<<Configuration of Navigation Device 3>>
The navigation device 3 is configured to provide route guidance based on map data read from the SD card 2 . The navigation device 3 is connected via an input/output unit 39 to various car navigation sensors and input/output devices provided in the vehicle. Car navigation sensors include GPS (Global Positioning System) receivers, azimuth sensors, distance sensors, and the like. A GPS receiver receives GPS signals from GPS satellites. The orientation sensor detects the traveling orientation of the vehicle or changes in the traveling orientation. A distance sensor detects the speed and travel distance of the vehicle. The navigation device 3 is configured to use data acquired through the input/output unit 39 to perform processing such as route guidance and vehicle locking.

The output unit 31 displays a map based on the map data. The output unit 31 is implemented by, for example, a liquid crystal display.

The navigation storage unit 32 is configured to store various types of information. In this embodiment, the navigation storage unit 32 stores at least a predetermined encryption key, initial value information, and a program.

The predetermined encryption keys are an encryption key for encrypting and decrypting the vehicle identification file and an encryption key for encrypting and decrypting the license file.

The programs are various programs executed by the navigation device 3 . These programs include a program for activating the navigation device 3, a program for updating the map, and a program for reading the medium specifying information from the medium management section 23, and the like.

The navigation storage unit 32 is implemented by a storage device. Examples of storage devices include semiconductor memory elements such as RAMs and flash memories, hard disks, and optical disks.

The input/output unit 39 inputs and outputs data between the vehicle and the navigation device 3 . The input/output unit 39 is implemented by an I/O (Input/Output) interface.

The SD host module 33 is a device for exchanging data between the navigation device 3 and the SD card 2 . The SD host module 33 is configured so that the SD card 2 can be inserted. The SD host module 33 corresponds to a connector for connecting the SD card 2 .

The navigation control unit 34 controls each device provided in the navigation device 3 . Navigation control unit 34
has a travel distance acquisition unit 36 , a judgment unit 37 and a data processing unit 38 .

The travel distance acquisition unit 36 controls the input/output unit 39 so as to acquire travel distance information from a distance sensor provided in the vehicle. The mileage information is information indicating the mileage of the vehicle. Note that the traveled distance means the total distance traveled since the vehicle was not used.

The determination unit 37 makes various determinations when map data is read from the SD card 2 inserted into the SD host module 33 .

Specifically, the determination unit 37 determines whether or not a vehicle identification file is recorded on the SD card 2 . When determining that the vehicle identification file is not recorded in the SD card 2, the determination unit 37 does not activate the navigation device 3. - 特許庁That is, the authentication fails with a non-genuine SD card in which the vehicle identification file is not stored.

The determination unit 37 also determines whether or not the vehicle identification file read from the SD card 2 is proper. Specifically, the determination unit 37 determines whether the initial value information included in the vehicle identification file matches the initial value information stored in the navigation storage unit 32 before the vehicle is locked. After the vehicle is locked, the determination unit 37 determines whether or not the unique value information included in the vehicle identification file matches the character string information created based on the vehicle identification information. Note that the determination unit 37 acquires vehicle identification information from the vehicle via the input/output unit 39 . The determination unit 37 also determines whether or not the medium identification information included in the vehicle identification file matches the medium identification information stored in the medium management unit 23 . Furthermore, the determination unit 37 determines whether or not the version information included in the vehicle identification file and the version information of the map data stored in the SD card 2 match.

If the determination unit 37 determines that the vehicle identification file is not appropriate, the navigation device 3
not start the That is, authentication of the vehicle identification file fails.

The SD card 2 of this embodiment can exchange data with the PC 6, like general SD cards distributed on the market. Therefore, the map data stored in the genuine SD card 2 may be illegally copied to another genuine SD card 2 or commercially available SD card via the PC 6 . At least one of initial value information, unique value information, medium specific information, and version information of the illegally copied vehicle identification file is information stored or created by the navigation device 3 or information stored in the SD card. no longer correspond to Therefore, the navigation device 3 can prevent the illegally copied genuine SD card 2 or commercially available SD card from being used.

Also, since the navigation device 3 does not read map data from the SD card 2 that is used in another vehicle and is associated with another vehicle, the SD card in the other navigation device 3 does not read the map data.
Card 2 can be prevented from being reused.

The judgment unit 37 also judges whether or not the content of the data contained in the license file read from the SD card 2 matches the current situation. This determination is based on, for example, initial value information stored in the navigation storage unit 32, vehicle identification information acquired via the input/output unit 39, medium identification information stored in the medium management unit 23, and SD This is done based on at least one of the map data stored in the card 2.

When making the above-described various determinations, the determination unit 37 decrypts each of the license file and the vehicle identification file based on the encryption key stored in the navigation storage unit 32 .

The data processing unit 38 performs various processes based on the determination result of the determination unit 37, the travel distance of the vehicle, and the like.

Specifically, the data processing unit 38 creates a new license file when the determination unit 37 determines that the content of the data included in the license file does not match the current state. The data processing unit 38 stores, for example, initial value information stored in the navigation storage unit 32, vehicle specific information acquired via the input/output unit 39, medium specific information stored in the medium management unit 23, SD Based on at least one of the map data stored in the card 2, a license file is created. After that, the data processing unit 38 overwrites the license file stored in the SD card 2 with the newly created license file. This keeps the license file consistent with the current state of the data it contains. As a result, the map output system 1 can appropriately update the map.

Further, in order to activate the navigation device 3, the data processing unit 38 reads the map data from the SD card 2 whose vehicle identification file has been successfully authenticated, and causes the output unit 31 to output the map data.

The data processing unit 38 also locks the vehicle. Specifically, when the data processing unit 38 determines that the mileage information acquired by the mileage acquisition unit 36 exceeds a predetermined value, the data processing unit 38 creates a new vehicle identification file. The vehicle identification file newly created by the data processing unit 38 is a file containing information on unique values. The data processing unit 38 overwrites the vehicle identification file stored in the SD card 2 with the newly created vehicle identification file. The data processing unit 38 sets eigenvalues based on the vehicle identification information acquired via the input/output unit 39 . As a result, when the vehicle has traveled over a predetermined travel distance, the SD card 2 stores the vehicle identification file including the information of the unique value corresponding to the vehicle. The predetermined value is not particularly limited,
For example, it is set to a value within the range of 10 km or more and 30 km or less. or the given value is
For example, it is set to a value within the range of 30 km or more and 50 km or less. or the given value is
For example, it is set to a value within the range of 50 km or more and 100 km or less. Alternatively, the predetermined value is set to a value within a range of 100 km or more and 200 km or less, for example.

After the vehicle has traveled a predetermined distance, the data processing unit 38 locks the vehicle each time a genuine SD card 2 that has not been locked is inserted.

The data processing unit 38 also determines whether or not the SD card 2 is locked with respect to the vehicle based on the vehicle identification file.

In the case of map update, the data processing unit 38 requests the first server 4 for the latest version. When requesting the latest version, the data processing unit 38 controls the navigation communication unit 35 to transmit the version information of the map data stored in the SD card 2 and the medium specific information to the first server 4 . Further, when the data processing unit 38 requests the latest version, the data processing unit 38 controls the navigation communication unit 35 so as to receive the map difference data of the latest version from the first server 4 .
Furthermore, the data processing unit 38 newly creates a vehicle identification file when receiving the map difference data. This vehicle identification file is a file whose version information has been updated based on the map difference data acquired from the first server 4 . The data processing unit 38 overwrites the vehicle identification file stored in the SD card 2 with the newly created vehicle identification file. The data processing unit 38 also causes the SD card 2 to store the map difference data received from the first server 4 .

When creating a new license file or vehicle identification file, the data processing unit 38 encrypts these files based on the encryption key stored in the navigation storage unit 32 .

The navigation control unit 34, for example, executes programs stored in the navigation storage unit 32 by the CPU (
Central Processing Unit) and MPU (Micro Process
ssing Unit) etc. is executed.

The navigation communication unit 35 communicates with the first server 4 via the Internet 10 . In this embodiment, the navigation communication unit 35 is realized by a TCU (telecommunication control unit).

<<Configuration of the first server 4>>
The first server storage unit 41 stores a predetermined encryption key, a map database, map difference data,
program is stored. The predetermined cryptographic keys are the cryptographic key corresponding to the vehicle identification file and the cryptographic key corresponding to the license file. The programs are various programs executed by the first server 4 . The first server storage unit 41 stores two or more pieces of map difference data with different map versions. The map difference data stored in the first server storage unit 41 is updated to a new version of the map difference data by the organization that manages the first server 4, for example, several times a year.

The map database is used to manage update deadlines for map data stored in the SD card 2 . The map database stores medium identification information, update deadline information, and version information in association with each other. This version information indicates the version of the map data stored in the SD card 2. FIG.

The first server storage unit 41 is realized by a storage device. The storage device is, for example, a RAM
, a semiconductor memory device such as a flash memory, a hard disk, an optical disk, or the like. The first server storage unit 41 stores various information.

The first server communication unit 42 communicates with each of the navigation device 3 and the PC 6 via the Internet 10 .

The first server control unit 43 controls the first server storage unit 41 and the first server communication unit 42, respectively, and performs various judgments and processes associated with map updating.

Specifically, the first server control unit 43 verifies the license file transmitted from the navigation device 3 or the PC 6 when map update is started. Verification is performed by confirming that the license file can be decrypted and that the medium-specific information included in the license file includes the specific information described above. Decryption of the license file is performed based on the encryption key stored in the first server storage unit 41 . Note that if the license file is not authenticated, the first server control unit 43 stops the update process.

After verifying the license file, the first server control unit 43 determines whether or not the update right is granted to the SD card 2 corresponding to the medium identification information included in the license file. The update right is the right to update map data stored in the SD card 2 . The renewal right is S
Granted for each D card 2.

When the medium identification information, the update deadline information, and the version information are registered in the map database, the first server control unit 43 determines that the update right is granted to the SD card 2 corresponding to the medium identification information. to decide.

When the update right is granted, the first server control unit 43 determines whether or not the map data stored in the SD card 2 can be updated based on the map database and the license file. Note that if the update deadline has already passed, the first server control unit 43 stops the update process.

If the update right has not been granted, the first server control unit 43 determines the update deadline of the map data stored in the SD card 2 to which the update right is granted based on the license file. The first server control unit 43 sets, for example, the date on which a predetermined number of years have passed from the current time as the update deadline. The first server control unit 43 sets the determined update deadline to the target SD
It is reflected in the map database together with the medium identification information and version information of the card 2 .

The first server control unit 43 creates authentication information when the license file is authenticated. The authentication information is used as information proving that the navigation device 3 or the PC 6 has normally accessed the first server 4 . Authentication information is represented by character strings that have no particular meaning. The authentication information is set so that it can be used for a predetermined period of time required for one map update from the time it is created. Note that the predetermined time is, for example, 12 hours or 24 hours. The authentication information is transmitted between the first server 4 and the navigation device 3 or the PC 6 together with various information. By using the authentication information, the map output system 1 does not need to perform processing such as transmission and decryption of the license file each time it is accessed, and can reduce the processing load of the map output system 1 while taking security measures.

In the case of map update via the navigation device 3, the first server control unit 43 selects the latest map difference data version among the two or more downloadable map difference data stored in the first server storage unit 41, Determine as the latest map version.

In the case of updating the map via the PC 6, when the PC 6 issues a request to issue a vehicle identification file, the first server control unit 43 updates the vehicle identification based on the version information of the map data downloaded from the second server 5 to the PC 6. Create a new file. The first server control unit 43 acquires this version information from the PC6. The vehicle specific file that is created contains this version information.

When creating the vehicle identification file, the first server control unit 43 encrypts the vehicle identification file based on the encryption key stored in the first server storage unit 41 .

The first server control unit 43 updates the version information stored in the map database when the map is updated.

The first server control unit 43, for example, executes programs stored in the first server storage unit 41 by a CPU (Central Processing Unit) or an MPU (Micro
Processing Unit) and the like are executed.

<<Configuration of the second server 5>>
The second server 5 has substantially the same configuration as the first server 4, and the description of the same configuration is omitted. The second server 5 is used for updating maps via the PC 6, and the navigation device 3
Not used for map updates via

The second server 5 has a configuration different from that of the first server 4 , and map data for updating is stored in the second server storage section 51 . Moreover, it differs from the first server 4 in that the predetermined encryption key, the map database, and the map difference data are not stored in the second server storage section 51 . The map data stored in the second server storage unit 51 is updated to a new version of the map data by the organization that manages the second server 5, for example, several times a year.

The second server control unit 53 is configured to, upon receiving the version information transmitted from the PC 6 in the case of map update, transmit update map data corresponding to the version information to the PC 6 . The version information transmitted from the PC 6 is information indicating the latest version among the versions of map data that can be downloaded from the second server 5 to the PC 6 .

≪Configuration of PC6≫
PC6 corresponds to an update unit. This embodiment is not limited to the configuration in which the PC 6 is used as the update unit, and a smart phone, a tablet terminal, or the like may be used as the update unit.

The display unit 61 is implemented by, for example, a liquid crystal display.

Various programs and the like are stored in the PC storage unit 62 . These programs are
An update tool program, a program necessary for processing performed by the PC 6, and a medium management unit 23
A program or the like for reading the medium specifying information from the .

The PC communication unit 63 communicates with the first server 4 and the second server 5 via 10 respectively.

SD interface 64 is a device for exchanging data between PC 6 and SD card 2 . The SD interface 64 is configured so that the SD card 2 can be inserted.

The PC control section 65 controls the PC storage section 62, the PC communication section 63 and the SD interface 64, respectively. In the case of map update, the PC control unit 65 determines the latest map data version among downloadable update map data stored in the second server storage unit 51 as the latest map version. The PC control unit 65 controls the PC communication unit 63 to transmit version information to the second server 5 based on the determined version. The PC control unit 65 also controls the PC communication unit 63 so as to receive update map data from the second server 5 . Note that the PC control unit 65 may be configured to be able to acquire information necessary for version determination from at least one of the first server 4 and the second server 5 .

When receiving map data for update, the PC control unit 65 requests the first server 4 to issue a vehicle identification file. The vehicle identification file issuance request is processing for requesting transmission of a vehicle identification file corresponding to updated map data. When issuing a vehicle identification file issuance request, the PC control unit 65 controls the PC communication unit 63 so as to transmit the version information of the updated map data to the first server 4, and also controls the vehicle identification file from the first server 4. It controls the PC communication section 63 so as to receive the file.

The PC control unit 65, for example, executes programs stored in the PC storage unit 62 by the CPU (
Central Processing Unit) and MPU (Micro Process
ssing Unit) etc. is executed.

≪Types of data recorded on the SD card 2 in each situation≫
As described above, in the map output system 1 of this embodiment, various data are exchanged between the navigation device 3 and the SD card 2 or between the PC 6 and the SD card 2 . As a result, the data recorded on the SD card 2 is changed according to the situation.

Before being inserted into the navigation device 3 for the first time, the SD card 2 contains:
A vehicle identification file and map data are stored. In this situation, the vehicle identification value information included in the vehicle identification file is initial value information.

When the SD card 2 is inserted into the navigation device 3 for the first time, the SD card 2 stores a new license file.

After vehicle locking, the SD card 2 stores a vehicle identification file containing unique value information instead of a vehicle identification file containing initial value information. As a result, the SD card 2 stores the information of the vehicle specific value unique to each vehicle. Also, in the SD card 2, a license file containing eigenvalue information is stored instead of the license file containing initial value information.

After the map is updated via the navigation device 3, the map difference data is newly stored in the SD card 2. - 特許庁The SD card 2 also stores a vehicle identification file and a license file containing version information corresponding to the map difference data.

After updating the map via the PC 6, the map data for update is stored in the SD card 2 instead of the originally stored map data. The SD card 2 also stores a vehicle identification file and a license file containing version information corresponding to the update map data.

<<Activation process of the navigation device 3>>
FIG. 3 is a flow chart showing activation processing of the navigation device 3 . The boot process is
It is started when the SD card 2 is inserted into the navigation device 3 and power is supplied to the navigation device 3 .

In step S1, the determination unit 37 determines whether or not the SD card 2 stores a vehicle identification file. If it is determined that the vehicle identification file is stored, the activation process proceeds to step S2. If it is not determined that the vehicle identification file is stored, the activation process proceeds to step S3.

In step S2, the determination unit 37 determines whether or not the vehicle identification file is proper. If the vehicle identification file is determined to be correct, the activation process proceeds to step S4. If the vehicle identification file is not determined to be correct, the activation process proceeds to step S3.

In step S3, the navigation device 3 determines that the inserted SD card 2 has an error, and terminates the activation process.

In step S4, the navigation device 3 is activated.

In step S5, the determination unit 37 determines whether or not the SD card 2 stores a license file. If it is determined that the license file is stored, the activation process proceeds to step S6. If it is not determined that the license file is stored, the activation process proceeds to step S7.

In step S6, the data processing unit 38 determines whether or not the contents of the data contained in the license file match the current state. If it is determined that the contents of the data match the current state, the activation process proceeds to step S9. If it is determined that the contents of the data do not match the current state, the activation process proceeds to step S7.

In step S7, the data processing unit 38 creates a license file.

At step S8, the data processing unit 38 writes the license file created at step S7 to the SD card 2. FIG. If the license file has already been stored in the SD card 2, the license file stored in the SD card 2 is overwritten with the license file created in step S7.

In step S9, the data processing unit 38 determines whether or not the travel distance information exceeds a predetermined value. If it is determined that the mileage information exceeds the predetermined value, the activation process proceeds to step S10.
proceed to If it is determined that the mileage information does not exceed the predetermined value, the navigation function becomes available and the activation process ends.

In step S10, the data processing unit 38 determines whether the SD card 2 is locked in the vehicle. If it is determined that the SD card 2 is locked in the vehicle, the navigation function becomes available and the activation process ends. If it is not determined that the SD card 2 is locked in the vehicle, the activation process proceeds to step S11.

In step S11, the data processing unit 38 locks the vehicle. As a result, the navigation function becomes available, and the activation process ends.

<<Update processing of map data using the navigation device 3>>
FIG. 4 is a flowchart showing map data update processing using the navigation device 3 . The navigation device 3 starts update processing at a predetermined timing.

In step S<b>21 , the navigation control unit 34 controls the navigation communication unit 35 so as to transmit the license file to the first server 4 .

At step S22, the first server control unit 43 controls the first server communication unit 42 to receive the license file.

In step S23, the first server control unit 43 verifies the license file.

In step S24, the first server control unit 43 determines whether or not the SD card 2 corresponding to the license file received in step S23 is granted the update right. If it is determined that the update right has been granted, the process proceeds to step S26. If it is determined that the update right is not granted, the process proceeds to step S25.

In step S25, the first server control unit 43 determines the map data update deadline for the SD card 2 to which the update right has been granted in step S24 based on the license file received in step S23.

In step S26, the first server control unit 43 creates authentication information.

In step S<b>27 , the first server control section 43 controls the first server communication section 42 to transmit the authentication information created in step S<b>26 to the navigation device 3 .

In step S28, the navigation control unit 34 causes the navigation communication unit 3 to receive the authentication information.
5 is controlled.

In step S29, the navigation controller 34 requests the latest version. When requesting the latest version, the navigation control unit 34 transmits the version information and medium identification information of the map data stored in the SD card 2 and the authentication information received in step S28 to the first server 4 .

In step S<b>30 , the first server control section 43 determines the latest map version based on the map difference data stored in the first server storage section 41 .

In step S31, the first server control section 43 controls the first server communication section 42 to transmit the map difference data to the navigation device 3 together with the authentication information created in step S27. The transmitted map difference data corresponds to the map version determined in step S30.

In step S32, the navigation control unit 34 controls the navigation communication unit 35 to receive the map difference data and the authentication information.

In step S33, the data processing unit 38 creates a vehicle identification file.

In step S33, the data processing unit 38 controls the SD host module 33 to write the map difference data received in step S32 and the vehicle identification file created in step S33 to the SD card 2. FIG. As a result, the updating process via the navigation device 3 ends.

<<Updating map data using PC6>>
FIG. 5 is a flowchart showing map data update processing using the PC 6 . PC6
The update process via is started by the user at an arbitrary timing.

In step S<b>41 , the PC control section 65 controls the PC communication section 63 to transmit the license file to the first server 4 .

The processing of steps S42 to S46 is the same as the processing of steps S22 to S26 shown in FIG.

In step S47, the 1st server control part 43 controls the 1st server communication part 42 so that the authentication information produced by step S46 may be transmitted to PC6.

At step S48, the PC control unit 65 causes the PC communication unit 6 to receive the authentication information.
3.

In step S49, the PC control section 65 determines the latest map version.

In step S50, the PC control section 65 controls the PC communication section 63 so as to transmit the version information determined in step S49 to the second server 5. FIG.

In step S51, the second server control unit 53 controls the second server communication unit 52 to receive version information.

In step S<b>52 , the second server control section 53 controls the second server communication section 52 to transmit map data for update to the PC 6 . The map data to be transmitted is transmitted in step 51
corresponds to the version information received in

In step S53, the PC control unit 65 causes P to receive update map data.
It controls the C communication unit 63 .

At step S54, the PC control unit 65 requests the issuance of the vehicle identification file. P.
When issuing a vehicle identification file issuance request, the C control unit 65 causes the PC communication unit 63 to transmit the version information of the map data received in step S53 and the authentication information received in step S48 to the first server 4. to control.

In step S55, the first server control unit 43 creates a vehicle identification file. The map version of the vehicle identification file created here is updated.

In step S56, the first server control unit 43 instructs the first server controller 43 to transmit the vehicle identification file created in step S55 to the PC 6 together with the authentication information created in step S47.
It controls the server communication unit 42 .

At step S57, the PC control section 65 controls the PC communication section 63 to receive the authentication information and the vehicle identification file.

At step S58, the PC control unit 65 controls the SD interface 64 to write the map data received at step S53 and the vehicle identification file received at step S57 to the SD card 2. FIG. This completes the update process via the PC 6 .

<<Modification>>
In this embodiment, the SD card 2 is used, but instead of the SD card 2, a microSD
A card or nanoSD card or the like may be used. USB (Universal Serial Bus)
A memory, a CD-R (Compact Disc Recordable), or the like may be used.

In the present embodiment, when the map is updated via the PC 6, map data for update is downloaded from the second server 5, but map data for update may be downloaded from the first server 4. . That is, the map output system 1 may be configured without the second server 5 .

In this embodiment, two or more SD cards 2 have the same initial value, but the initial value may be a character string corresponding to each of the two or more SD cards 2 .

In this embodiment, the vehicle identification value is created based on the vehicle identification information, but may be created based on information for identifying equipment such as communication equipment mounted on the vehicle. In this case also, the SD card 2 in which the vehicle is locked stores the information of the unique value corresponding to the vehicle.

In this embodiment, the mobile body on which the navigation device 3 is mounted is a vehicle, but the mobile body is not limited to the vehicle. Other mobile objects include ships and aircraft. A vehicle is, for example, an automobile, a motorcycle, a bicycle, or a train.

In this embodiment, the navigation device 3 is configured to execute vehicle lock processing when the vehicle travels beyond a predetermined travel distance. If the vehicle travels longer than a predetermined length, the vehicle is locked. In other words, the navigation device 3 locks the vehicle when the moving body moves beyond a predetermined length. The movement here means that the mobile body moves by the power provided by the mobile body.

In this embodiment, the amount of use is obtained based on the length of travel of the vehicle, but the amount of use indicates that the vehicle equipped with the navigation device 3 is not temporarily used but is being used in earnest. Any parameter is acceptable. Therefore, the usage amount may be obtained based on, for example, the period during which the map data was output to the output unit 31 . In this case, when the navigation device 3 uses the map data stored in the SD card 2 for a certain period of time, that is, the map data stored in the SD card 2 is output to the output unit 31 for a certain period of time. is configured to execute a vehicle lock process when the vehicle is locked. It is preferable that the fixed period has an end time of 1 hour or more and 5 years or less. It is more preferable that the fixed period ends in 24 hours or more and 3 years or less. It is more preferable that the certain period of time is one month or more and six months or less.

Further, the navigation device 3 may be configured to lock the vehicle when the SD card 2 is inserted into the SD host module 33 . For example, in the case of a configuration in which the usage amount is calculated based on the period during which the map data is output to the output unit 31, the navigation device 3 is configured to lock the vehicle immediately after the map data is output to the output unit 31. may or
The navigation device 3 may be configured to lock the vehicle immediately after the SD card 2 is inserted into the SD host module 33 .

Although the map data stored in the SD card 2 is not encrypted in this embodiment, at least part of the map data may be encrypted.

Although the first server 4 and the second server 5 are managed by different organizations in this embodiment, they may be managed by the same organization.

In the present embodiment, when the vehicle is locked, the vehicle lock file is created by the navigation device 3, but the configuration may be such that the vehicle lock file is created by the first server 4 instead of the navigation device 3. .

In this embodiment, the SD card 2 stores in advance a vehicle identification file including initial value information, but the configuration is not limited to this. For example, when the vehicle identification file including the information of the unique value is not stored in the SD card 2, the navigation device 3 stores the SD card 2 in the SD card.
It may be configured such that when it is inserted into the D host module 33, it requests the input of a predetermined license key, and is activated when it is authenticated.

In this embodiment, when the vehicle is to be locked, the navigation device 3 newly creates a vehicle identification file including information on the unique value, and uses the created vehicle identification file to store the initial value information stored in the SD card 2. , but not limited to this configuration. When the data processing unit 38 executes the vehicle lock, the SD card 2
However, the SD host module 33 may be controlled so as to change the initial value information contained in the vehicle identification file to the unique value information. Therefore, the data processing unit 38 reads the vehicle identification file from the SD card 2, changes the initial value information stored in the vehicle identification file to eigenvalue information, and uses this vehicle identification file to generate S
A process of overwriting the vehicle identification file containing the initial value information stored in the D card 2 may be performed. The data processing unit 38 may additionally store a vehicle identification file including information on the unique value in the SD card 2 when executing the vehicle lock. In the case of this configuration, when the vehicle identification file including the initial value information and the vehicle identification file including the eigenvalue information are stored in the SD card 2, the navigation device 3 operates based on the vehicle identification file including the eigenvalue information. is configured to determine whether or not to start up.

In this embodiment, as shown in FIG. 3, the navigation device 3 executes the vehicle locking process when it is activated, but it is not limited to this configuration. may be configured to execute the processing of

In this embodiment, the navigation device 3 is configured to lock the SD card 2 storing map data, but to lock the recording medium in which map data is not stored. There may be. In this configuration, the recording medium includes, for example,
Data that may be reused in two or more devices are stored.

In the present embodiment, the map output system 1 is configured to use a license file to manage update deadlines, but may be configured to use a vehicle identification file to manage update deadlines.

In this embodiment, the navigation device 3 communicates directly with the first server 4 when updating the map, but may be configured to communicate with the first server 4 via a mobile terminal. In this case, the navigation device 3 preferably has a configuration compatible with SDL (SmartDeviceLink) for linking the navigation device 3 and the mobile terminal by short-range wireless communication. Mobile terminals include smartphones, mobile phones, tablet terminals, laptop computers, and the like.

FIG. 6 is a flowchart showing map update processing in a modification. The navigation device 3 starts update processing at a predetermined timing.

In step S61, the navigation control unit 34 controls the navigation communication unit 35 to transmit the license file to the mobile terminal.

In step S<b>62 , the portable terminal receives the license file from the navigation device 3 and transmits the received license file to the first server 4 .

The processing of steps S63-S67 is the same as the processing of steps S22-26 shown in FIG.

In step S68, the first server control unit 43 controls the first server communication unit 42 to transmit the authentication information to the terminal device.

In step S<b>69 , the terminal device receives the authentication information from the first server 4 and transmits the received authentication information to the navigation device 3 .

The processing of step S70 is the same as the processing of step S28 shown in FIG.

In step S71, the navigation control unit 34 requests the latest version.

In step S<b>72 , the mobile terminal transmits the latest version request to the first server 4 . Specifically, the portable terminal transmits version information, medium identification information, and authentication information to the first server 4 .

The processing of step S73 is the same as the processing of step S30 shown in FIG.

In step S74, the first server control unit 43 controls the first server communication unit 42 to transmit the map difference data of the map version determined in step S73 to the mobile terminal.

In step S<b>75 , the mobile terminal receives the map difference data from the first server 4 and transmits the received map difference data to the navigation device 3 .

The processing of steps S76-S78 is the same as the processing of steps S32-34 shown in FIG. This completes the update process via the mobile terminal.

≪Example of realization by hardware≫
FIG. 7 is a block diagram showing an example of the hardware configuration of the navigation device 3 according to this embodiment.

The navigation device 3 includes an MPU 71 and a ROM (Read Only Memory).
) 32a, RAM (Random Access Memory) 32b, I/O interface 39a, display 31a, TCU 35a, storage device 32
c and an SD host module 33 .

The MPU 71 functions as an arithmetic processing device and a control device. The MPU 71 controls overall operations of the navigation device 3 according to various programs. The MPU 71 has a ROM 32
Various programs stored in the RAM 32b are executed using the RAM 32b as a work area.

The ROM 32a stores programs used by the MPU 71, calculation parameters, and the like.

The RAM 32b temporarily stores programs used when the MPU 71 executes control. The RAM 32b also temporarily stores parameters and the like that change as appropriate when the MPU 71 executes control.

The I/O interface 39a reads data such as mileage information and vehicle specific information from various car navigation sensors and input/output devices provided in the vehicle, and stores the data through the RAM 32b.
Provide to PU71.

The TCU 35 a communicates with the first server 4 .

The storage device 32c is realized by, for example, a magnetic memory device, a semiconductor memory device, an optical memory device, or a magneto-optical memory device. The magnetic storage device is, for example, an HDD (Hard Disk Drive). The storage device 32c is the MP
Stores programs executed by the U71, various data, and various data obtained from the outside.

The SD host module 33 reads and writes information from the inserted SD card 2 . The SD host module 33 outputs information read from the SD card 2 to the RAM 32b.

MPU 71 , ROM 32 a , RAM 32 b , I/O interface 39 a , display 31 a , TCU 35 a , storage device 32 c and SD host module 33 are interconnected by bus 73 .

For example, the MPU 71 acquires travel distance information via the I/O interface 39a and outputs the travel distance information to the RAM 32b. The MPU 71 determines whether or not the mileage information exceeds a predetermined value, and if it determines that it does, creates a vehicle identification file based on the vehicle identification information obtained via the I/O interface 39a. The MPU 71 stores the vehicle identification file in the SD card 2 via the SD host module 33 . Vehicle lock is thereby executed.

The hardware configuration of each of the first server 4, the second server 5 and the PC 6 also has an I/O
The hardware configuration is almost the same as that of the navigation device 3 except for the interface 39a and the like.

The present invention is not limited to the above-described embodiments, and can be modified in various ways within the scope of the claims. Embodiments obtained by appropriately combining technical means disclosed in modifications is also included in the technical scope of the present invention.

1 map output system 2 SD card 3 navigation device
4 first server
5 second server
31 Output section
33 SD host module
34 navigation control unit
41 first server storage unit

Claims (8)

A map output device mounted on a mobile body,
a connection unit connected to a recording medium storing map data;
an output unit that outputs the map data;
A control unit that controls the connection unit and the output unit, respectively;
The control unit
writing a file containing information of a unique value, which is a character string corresponding to the mobile object, to the recording medium connected to the connection unit when the mobile object has been used beyond a predetermined amount of usage; and,
configured to cause the output unit to output the map data read from the recording medium storing a file containing the information of the eigenvalue corresponding to the moving object;
The map output device, wherein the usage amount is obtained based on the length of movement of the moving object or the period during which the map data is output to the output unit. A file containing initial value information, which is an arbitrary character string, is stored in advance in the recording medium,
The control unit
reading the map data also from the recording medium in which the file containing the initial value information is stored, and
The file containing the initial value information stored in the recording medium is overwritten with the file containing the unique value information when the moving object moves beyond a predetermined length. 2. The map output device according to claim 1, wherein: each of the file containing the initial value information or the file containing the unique value information further includes version information indicating a version of the map data;
The control unit
When the map data stored in the recording medium is updated, a file containing the information of the initial value or the unique value and the version information of the updated map data is written to the recording medium. 3. The map output device according to claim 2, wherein: A map output system comprising a map output device mounted on a mobile body and a server,
The map output device is
a connection unit connected to a recording medium storing map data;
an output unit that outputs the map data;
A control unit that controls the connection unit and the output unit, respectively;
The control unit
writing a file containing information of a unique value, which is a character string corresponding to the mobile object, to the recording medium connected to the connection unit when the mobile object has been used beyond a predetermined amount of usage; and,
configured to cause the output unit to output the map data read from the recording medium storing a file containing the information of the eigenvalue corresponding to the moving object;
The server is
wherein, when the map data stored in the recording medium is updated, a file containing version information indicating a version of the updated map data and information of the unique value is created;
The map output system, wherein the usage amount is determined based on the length of movement of the moving object or the period during which the map data is output to the output unit. The server further comprises a storage unit in which a predetermined encryption key is stored,
The server is
When the map data stored in the recording medium is updated, a file containing the version information and the unique value information of the updated map data is encrypted based on the encryption key. 5. The map output system according to claim 4, wherein: A file containing initial value information, which is an arbitrary character string, and the version information, is stored in advance on the recording medium;
The control unit
configured to read the map data also from the recording medium in which the file containing the information of the initial value is stored;
The server is configured to create a file containing the version information and the initial value information of the updated map data when the map data stored in the recording medium is updated. 6. The map output system according to claim 4 or 5, characterized in that: The recording medium is stored in advance with medium identification information for distinguishing from other recording media,
When the recording medium is connected to the connection unit, the map output device records a license file including version information indicating the version of the map data stored in the recording medium and the medium identification information. configured to write to a medium,
7. The server according to any one of claims 4 to 6, wherein the server is configured to determine a time limit for updating the map data stored in the recording medium based on the license file. 1. The map output system of 1. A computer mounted on a mobile object, comprising a connection unit connected to a recording medium storing map data, an output unit for outputting the map data, and a control unit for controlling the connection unit and the output unit. of,
writing a file containing information of a unique value, which is a character string corresponding to the mobile object, to the recording medium connected to the connection unit when the mobile object has been used beyond a predetermined amount of usage; and,
configured to cause the output unit to output the map data read from the recording medium storing a file containing the information of the eigenvalue corresponding to the moving object;
The program according to claim 1, wherein the amount of usage is obtained based on the length of movement of the mobile object or the period during which the map data is output to the output unit.

Images