JP2010086093A - Storage medium, information processor, method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology capable of suppressing the map information of a storage medium sold by a normal selling method from being copied to another storage medium, and from being used. <P>SOLUTION: A storage medium has: a user access invalidation region 61 whose write-in is performed when the storage medium is manufactured, and whose rewrite after the storage medium is manufactured is inhibited, and whose access by a user is inhibited; and a user access validation region 62 whose access by the user is permitted. Medium identification information (medium ID) set for every normal SD card 60 for identifying the normal SD card 60 is stored in the user access invalidation region 61, and medium identification information (medium ID), map information and the version number of the map information are stored in the user access validation region 62. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a storage medium, an information processing apparatus, a method, and a program, and more particularly to a technique suitable for a car navigation apparatus.

  The car navigation device reads map data, point data indicating points on the map, and the like from various storage media, and uses them as a route guidance destination. For this reason, the car navigation device usually has an access device to a removable storage medium, for example, an SD card (Secure Digital Memory Card).

On the other hand, for example, a method of selling an SD card used in a car navigation device is generally a method in which a car navigation device vendor bundles and sells the car navigation device, or a car navigation device when map information is updated. A method of storing and selling updated map information separately, and distributing the updated map information from the map distribution server via the Internet and selling it by having the user download it on a PC (computer) There is a known method (to write downloaded map information to an SD card).
JP 2002-350155 A

  However, the conventional technology has a problem in that map information and the like stored in an SD card sold by a car navigation device vendor by a regular sales method are relatively easily copied to another SD card. It was. Such a problem occurs not only in the SD card but also in various storage media.

  The present invention has been made in view of such a problem, and provides a technique capable of suppressing that the map information or the like of a storage medium sold by an authorized sales method is copied to another storage medium and used. Is an issue.

The present invention employs the following means in order to solve the above problems.
That is, the present invention is a user-accessible area that is written at the time of manufacturing a storage medium and that is prohibited from being rewritten after manufacture and that is prohibited from being accessed by the user, and a user-accessible area that is allowed to be accessed by the user. In the user inaccessible area, medium identification information set for each storage medium for identifying a storage medium is stored. In the user accessible area, the medium identification information and a map are stored. Information is stored.

An example of the storage medium is an SD card (Secure Digital Memory Card) which is one of flash memory standards. The user inaccessible area is an area that cannot be accessed by a normal PC (personal computer) or the like, and is an area outside the range managed by an OS (operation software) such as a PC. The data written in the inaccessible area cannot be copied by a normal method, or is meaningless even if copied. In addition, this user inaccessible area can be set by a storage medium manufacturer or distributor as an area that cannot be accessed by a general PC or the like, for example, as an area where access is prohibited in the format. According to the present invention, since the same medium identification information is stored in the user inaccessible area and the user accessible area of the storage medium, the user tries to copy the map information in the storage medium to another storage medium. Sometimes only map information stored in the user accessible area can be copied. Accordingly, when various devices such as a navigation device using the storage medium storing the map information match the medium identification information in the user inaccessible area and the medium identification information in the user accessible area, the map of the storage medium By adopting a configuration in which information can be used, the copied storage medium can be prevented from being used, and as a result, the storage medium can be prevented from being copied.

  Further, the present invention is a user-accessible area that is written at the time of manufacturing a storage medium, is prohibited from being rewritten after manufacture, and is prohibited from being accessed by the user, and a user-accessible area that is allowed to be accessed by the user In the user inaccessible area, medium identification information set for each storage medium for identifying a storage medium is stored. In the user accessible area, the medium identification information and a map are stored. A first reading means for reading the medium identification information in the user inaccessible area from a storage medium storing information; a second reading means for reading the medium identification information and the map information in the user accessible area; Reading means, the medium identification information read by the first reading means, and read by the second reading means Collation determining means for collating the medium identification information to determine whether or not both of the medium identification information match, and the map information when the collation determining means determines that both of the medium identification information match When the map information is determined not to match, the display of the map information is stopped.

  According to the present invention, the storage medium has the user inaccessible area and the user accessible area, the medium identification information is stored in both the user inaccessible area and the user accessible area, and both pieces of the medium identification information match. Only in the case, the map information stored in the user accessible area is displayed, and the display is stopped when they do not match. Therefore, when the map information is copied from a storage medium that has been properly sold to another storage medium, the medium identification information is not stored in the user-inaccessible area of the copied storage medium. The display of the map information is stopped. As a result, the use of the copied storage medium can be prevented, and as a result, the copy of the storage medium properly sold can be suppressed.

  The present invention also includes a communication means that communicates via a network with a map distribution server that distributes map information, a download means that downloads the map information from the map information distribution server, and a storage medium that is written during manufacture of the storage medium. And a user-accessible area where access by the user is prohibited, and a user-accessible area where access by the user is allowed. The medium identification information set for each storage medium for identifying the medium is stored, and the user accessible area is in the user inaccessible area from the storage medium storing the medium identification information and the map information. First reading means for reading the medium identification information, and the medium in the user accessible area A second reading means for reading identification information, the medium identification information read by the first reading means, and the medium identification information read by the second reading means are collated to both the media. Collation determination means for determining whether or not the identification information matches, and when the verification determination means determines that both the medium identification information matches, the downloaded map information can be accessed by the user of the storage medium And writing means for writing to the area and stopping writing when it is determined that they do not match.

  According to the present invention, when the user inaccessible area of the storage medium and the medium identification information stored in the user accessible area match, the map information downloaded from the map distribution server is written to the storage medium and does not match Stop writing to. Therefore, even if an attempt is made to copy the map information of a storage medium that has been properly sold to another storage medium, the medium identification information is not stored in the user inaccessible area of the other storage medium, so the map information or the like is copied. Can be prevented.

  The present invention may also be a method by which a computer executes the above processing. Further, the present invention may be a program that provides the above functions to a computer. Further, the present invention may be a computer-readable recording medium that records such a program.

  Here, the computer-readable recording medium refers to a recording medium that accumulates information such as data and programs by electrical, magnetic, optical, mechanical, or chemical action and can be read from the computer. .

  Examples of such a recording medium that can be removed from the computer include a flexible disk, a magneto-optical disk, a CD-ROM, a CD-R / W, a DVD, a DAT, an 8 mm tape, and a memory card.

  Further, there are a hard disk, a ROM (read only memory), and the like as a recording medium fixed to the computer.

  ADVANTAGE OF THE INVENTION According to this invention, it can suppress that the storage medium sold with the regular sales method is copied and used for another storage medium.

  Hereinafter, an information storage medium and an information processing apparatus according to the best mode (hereinafter referred to as an embodiment) for carrying out the present invention will be described with reference to the drawings. The configuration of the following embodiment is an exemplification, and the present invention is not limited to the configuration of the embodiment.

<< First Embodiment >>
<Configuration>
FIG. 1 is an external view of a navigation device 1 according to an embodiment of the present invention. Examples of the navigation device include an in-vehicle navigation device such as AVN (registered trademark: Audio Visual Navigation) of Fujitsu Ten Limited. However, the present invention can be applied to any electronic device that can be used in a vehicle such as an electronic device having a portable navigation function. The navigation apparatus 1 according to the present embodiment is a 2DIN (Deutsch Industry Normen) main body / monitor integrated car navigation apparatus, which provides a car navigation function for guiding a route to the current position of a vehicle or a destination, various audio / It has a function of reproducing visual (hereinafter referred to as AV) content, a function of receiving broadcast waves, and the like. The navigation device 1 is used in a state where it is installed near the center of a dashboard that can be easily reached by passengers in the driver's seat and passenger seat, and is composed of a main unit 2 and a display unit 3.

  FIG. 2 is a configuration diagram of the navigation device 1. The main unit 2 is composed of electronic components, such as a brake detection unit 4, a reverse detection unit 5, a portable player interface 6, a broadcast wave reception unit 7, an external audio / video input unit 8, a GPS information reception unit 9, Vehicle speed detection unit 10, camera image input unit 11, amplifier 12, opening / closing control unit 13A, angle control unit 13B, angle sensor 14, motor 15, CD drive 16, card memory interface 17, reset button 18, gyro sensor 19, control unit 20 is built-in. The display unit 3 is mainly composed of devices that display various kinds of information as images to the vehicle occupant and receive a user operation. The display unit 3 includes a touch panel 21, a display processing unit 22, and an operation receiving unit. 23, an operation button 24, and an infrared receiving / emitting unit 25 are incorporated.

  Hereinafter, the configuration of the main unit 2 will be described. The brake detection unit 4 detects whether or not the vehicle parking brake is applied, and notifies the control unit 20 of this. The brake detector 4 detects the state of the brake based on the energized state of a switch that is turned on / off in conjunction with the movement of the parking brake lever (or pedal). The brake detection unit 4 electrically detects the energization state of this switch via the terminal 26A.

  The reverse detection unit 5 detects whether the shift lever of the vehicle is reverse (reverse) and notifies the control unit 20 of this. The reverse detector 5 detects the state of the shift lever by turning on and off a switch that moves in conjunction with the shift lever. The reverse detection unit 5 electrically detects the energization state of this switch via the terminal 26B.

  The portable player interface 6 is an interface for bidirectional communication with a portable player (for example, iPod (registered trademark)) that reproduces music or the like. The portable player interface 6 starts bi-directional communication when such a portable player is externally connected, sends an audio signal sent from the player to the control unit 20, and starts playback or music playback sent from the control unit 20. A control signal such as feed is sent to the player. The portable player interface 6 communicates with the player via a cord connected to the terminal 26C.

  The broadcast wave receiving unit 7 is a circuit including a one-segment tuner (“One-segment” is a trademark application pending), an AM tuner (AM: Amplitude Modulation), and an FM tuner (FM: Frequency Modulation). The broadcast wave receiving unit 7 controls the reception state of the tuner according to the control signal from the control unit 20, and sends the radio wave signal received by the antenna connected to the terminal 26 </ b> D to the control unit 20.

  The external audio / video input unit 8 is a circuit that receives a composite video signal and an audio signal from a video / audio device connected to the terminal 26E and sends them to the control unit 20.

  A GPS information receiving unit 9 (GPS: Global Positioning System) receives a radio wave signal from a GPS satellite received by a GPS antenna connected to the terminal 26 </ b> F, and sends the received signal to the control unit 20. As is well known, GPS is a system that measures the position of a vehicle based on radio waves from at least three or more of the many GPS satellites that orbit the earth. The GPS information receiving unit 9 processes radio wave signals of these GPS satellites that orbit the earth. The signal from the GPS satellite received by the GPS information receiving unit 9 is used for car navigation.

  The vehicle speed detection unit 10 is a circuit that detects a vehicle speed pulse signal generated according to the rotation angle of the axle and sends the detected signal to the control unit 20. The vehicle speed pulse signal detected by the vehicle speed detection unit 10 is a stepped vehicle speed pulse signal output from a vehicle speed sensor or an electronic control unit that controls the engine and brake of the vehicle, and calculates the vehicle speed from the number of pulses per unit time. Used when. If the number of pulses per unit time increases, the vehicle is accelerating, and if it decreases, the vehicle is decelerating. The correlation between the vehicle speed and the vehicle speed pulse varies depending on the manufacturer of the vehicle, the vehicle type, the size of the wheel to be mounted, the air pressure, and the like. For this reason, in the control unit 20, the correlation between the vehicle speed and the vehicle speed pulse is obtained from the correlation between the moving distance of the vehicle calculated based on the positioning result by GPS and the number of pulses detected while traveling between them. Updated as appropriate. The vehicle speed detector 10 electrically detects a vehicle speed pulse signal output from the electronic control unit via a terminal 26G.

The camera video input unit 11 is a circuit that receives a video signal from a back eye camera that is a video camera that captures the rear of the vehicle and sends the video signal to the control unit 20. That is, the camera video input unit 11 sends a video signal from the video camera connected to the terminal 26H to the control unit 20 when the reverse detection unit 5 detects the reverse of the vehicle.

  The amplifier 12 is a circuit that amplifies an audio signal sent from the control unit 20 to a speaker installed in the vehicle interior. The amplifier 12 can arbitrarily change the amplification factor according to a control signal from the control unit 20.

  The opening / closing control unit 13 </ b> A is a circuit that performs an opening / closing operation of the display unit 3. The opening / closing control unit 13A opens and closes the display unit 3 by controlling the motor 15 according to a control signal from the control unit 20 or processing a signal from the angle sensor 14. FIG. 3 shows an opening / closing operation of the display unit 3 realized by the opening / closing control unit 13 </ b> A receiving the control signal from the control unit 20 by controlling the motor 15. As shown in FIG. 3, the opening / closing control unit 13 </ b> A can adjust the posture of the display unit 3 in three stages, and the “closed” state in which the insertion slot of the CD drive 16 (CD: Compact Disc) is closed, A “semi-open” state in which the CD insertion slot 27 of the CD drive 16 is opened and a “full open” state in which the card insertion slot 28 and the reset button 18 of the card memory interface 17 are opened are realized. When the display unit 3 is in the “closed” state, the CD insertion slot 27, the card insertion slot 28, and the reset button 18 are hidden by the display unit 3. When the display unit 3 is in the “semi-open” state, the card insertion slot 28 and the reset button 18 are hidden by the display unit 3, and the CD insertion slot 27 is accessible from the front of the navigation device 1. When the display unit 3 is in the “full open” state, the CD insertion slot 27, the card insertion slot 28, and the reset button 18 are accessible from the front of the navigation device 1.

  The angle control unit 13B is a circuit that adjusts the angle of the display unit 3. The angle control unit 13B controls the angle of the display unit 3 by controlling the motor 15 according to the control signal from the control unit 20 or processing the signal from the angle sensor 14 in the same manner as the opening / closing control unit 13A. adjust. The angle of the display unit 3 is a relative angle between the front surface of the main unit 2 and the front surface of the display unit 3 (that is, the surface of the touch panel 21) with the axis extending in the left-right direction of the navigation device 1 as the center. is there. FIG. 4 shows an angle adjustment state of the display unit 3 realized by the angle control unit 13B. As shown in FIG. 4, the angle control unit 13 </ b> B can tilt up by adjusting the elevation angle of the display unit 3 in multiple stages.

  The angle sensor 14 is a sensor that detects the angle of the display unit 3, and notifies the opening / closing control unit 13A of the detected angle with an electrical signal. The motor 15 is a motor that adjusts the angle of the display unit 3 and moves the upper end of the display unit 3 up and down and moves the lower end of the display unit 3 back and forth. When the opening / closing control unit 13A and the angle control unit 13B receive the control signal from the control unit 20, the difference between the angle of the display unit 3 detected by the angle sensor 14 and the target value of the angle determined based on the control signal. And the motor 15 is feedback-controlled so that the angle of the display unit 3 detected by the angle sensor 14 coincides with the control target value.

  The CD drive 16 is an optical disk reading device that reads and reproduces a CD on which audio contents such as music are recorded, and includes an optical pickup lens, a light emitting element, a disk drive motor, and the like.

The card memory interface 17 is a memory card reader / writer that reads and writes a nonvolatile semiconductor memory card that does not require a memory holding operation. The memory card inserted into the card memory interface 17 has a storage capacity of about 4 GB, and road information on expressways and general roads, point information on various facilities such as theme parks and gas stations (
Thereafter, map data including POI (Point Of Interest) data) and data such as telephone numbers and facility names are recorded. The control unit 20 implements various functions such as car navigation route search by accessing the map data recorded in the memory card. In the present embodiment, a case where an SD card (Secure Digital Memory Card) is used as a memory card will be described.

  The gyro sensor 19 is a two-axis gyro sensor built in the main unit 2. The gyro sensor 19 is for enabling positioning of the vehicle even when the GPS information receiver 9 cannot receive radio waves from GPS satellites. Note that the position of the vehicle when the radio wave from the GPS satellite cannot be received is calculated by the control unit 20 based on the vehicle speed detected by the vehicle speed detection unit 10 and the traveling direction of the vehicle detected by the gyro sensor 19.

  The control unit 20 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), an input / output interface, and the like. When the vehicle accessory power supply is turned on, the control unit 20 executes a computer program recorded in the ROM, and uses various data such as data stored in the memory card inserted in the card memory interface 17 and data stored in the RAM. Realize the function. Details of various functions realized by the control unit 20 will be described later.

  Next, each component constituting the display unit 3 will be described. The touch panel 21 is a GUI (Graphical User Interface) that combines a color liquid crystal display and a touch sensor. The touch panel 21 displays a screen with a 7.0-inch EGA (Enhanced Graphics Adapter) type liquid crystal display and an icon displayed on the screen. When the touch button is pressed, the touch sensor detects this.

  The display processing unit 22 is a circuit that performs drawing processing of a screen displayed on the liquid crystal display of the touch panel 21. The display processing unit 22 draws the screen of the touch panel 21 by driving thin film transistors that are evenly arranged in a lattice pattern on the liquid crystal display based on the video signal sent from the control unit 20.

  When the touch sensor detects a touch operation on the touch panel 21, the operation reception unit 23 specifies a touched position on the screen and sends information on the operated position to the control unit 20.

  The operation button 24 is not a button displayed as an icon on the touch panel 21 but a mechanical button, and is a push button switch for operation arranged below the touch panel 21 as shown in FIG. The operation buttons 24 include an open / close button, a current location button, and a volume adjustment button in order from the left side of the display unit 3. The volume adjustment button is set to increase the volume when the right side is pressed and to decrease the volume when the left side is pressed. When these buttons are pressed, a signal of the pressed button is sent to the control unit 20.

  The infrared receiving / emitting unit 25 is an interface for two-way communication between the navigation device 1 and the mobile phone using infrared rays, and includes a light emitting element that emits infrared light by electricity and a light receiving element that converts received infrared light into electricity. Has been. The infrared receiving / emitting unit 25 sends the control signal and data sent from the control unit 20 to the mobile phone and sends the control signal and data sent from the mobile phone to the control unit 20.

Next, various functions realized by the control unit of the main unit 2 will be described in detail. FIG. 5 is a functional block diagram illustrating various functional units realized by the control unit 20. When the accessory power supply of the vehicle is turned on, the control unit 20 operates as shown in FIG.
2. A computer program for realizing the route guidance function unit 53, the map data processing function unit 54, the user data processing function unit 55, the voice processing function unit 56, the video processing function unit 57, and the card authentication function unit 58 is executed.

  The operation processing function unit 51 displays an operation screen for controlling the operation of various function units on the touch panel 21 via the video processing function unit 57, or from the operation reception unit 23, the operation button 24, or the reset button 18. It processes the operation signals and controls the operation of various functional units.

  When the accessory power supply of the vehicle is turned on, the positioning function unit 52 is transmitted from the radio wave information transmitted from the GPS information receiving unit 9, the vehicle speed information notified from the vehicle speed detecting unit 10, and the gyro sensor 19. The position (latitude and longitude) of the vehicle is measured based on the angular velocity information.

  The route guidance function unit 53 is a function unit that searches for a route from the current location of the vehicle to the destination set by the user and performs route guidance. The route guidance function unit 53 retrieves a travel route from the position of the vehicle positioned by the positioning function unit 52 to the destination from the map data of the memory card inserted into the card memory interface 17. Then, the route of the vehicle is guided by voice and video from the relationship between the searched driving route and the position of the vehicle.

  The map data processing function unit 54 is used for FM broadcasting via the map data of the SD card (memory card) inserted into the card memory interface 17, the data of the travel route searched by the route guidance function unit 53, and the broadcast wave receiving unit 7. Based on the VICS (registered trademark) road traffic information data acquired from the waves, the vehicle position data measured by the positioning function unit 52, etc., the graphic data of the map displayed on the touch panel 21 is generated.

  The user data processing function unit 55 writes setting information such as location information (for example, home location information), route search history information, icon display / non-display setting information, etc. that the user intends to register to the RAM or reads from the RAM. Or

  The audio processing function unit 56 is a function unit that processes an audio signal output from the speaker via the amplifier 12. That is, the audio processing function unit 56 sends the radio broadcast received by the broadcast wave receiving unit 7, the audio signal acquired by the portable player interface 6 from the player, and the audio signal reproduced by the CD drive 16 to the amplifier 12, or the like. The audio signal of the route guidance from the route guidance function unit 53 is superimposed on the audio signal and sent to the amplifier 12.

  The video processing function unit 57 is a functional unit that generates video data to be displayed on the touch panel 21. That is, the video processing function unit 57 superimposes the operation screen data generated by the operation processing function unit 51 and the display map screen data generated by the map data processing function unit 54 and sends them to the display processing unit 22. Or the video signal of the television broadcast received by the broadcast wave receiving unit 7 is sent to the display processing unit 22, or the video signal from the camera video input unit 11 is displayed in conjunction with the detection of the reverse of the vehicle by the reverse detection unit 5. Or sent to the processing unit 22. The video processing function unit 57 stops the notification of the video data when the brake detection unit 4 detects the release of the parking brake while the video data of the television broadcast is being sent to the display processing unit 22.

  As will be described below, the card authentication function unit 58 uses an SD card (hereinafter referred to as a regular SD card) in which the SD card 60 (see FIG. 6) inserted into the card memory interface 17 is properly sold from the vendor of the navigation device 1. It is determined whether it is called a card.)

FIG. 6 shows a regular SD card 60. The regular SD card 60 is a regular SD card 60.
Is written at the time of manufacturing, and rewriting after manufacturing is prohibited, and has a user inaccessible area 61 in which access is prohibited by the user, and a user accessible area 62 in which access by the user is allowed. . In the user inaccessible area 61, a medium ID that is medium identification information is stored. The user inaccessible area 61 is an area that cannot be accessed by a normal PS (personal computer) or the like, and is an area outside the range managed by an OS (operation software) such as a PS. The data written in the inaccessible area 61 cannot be copied by a normal method, or is meaningless even if copied. In addition, the user inaccessible area 61 can be set by the manufacturer or distributor of the regular SD card 60 as an area that cannot be accessed by a general PS or the like, for example, as an area where access is prohibited in the format. The user accessible area 62 stores map information and an authentication key file obtained by encrypting the media ID identical to the media ID stored in the user inaccessible area 61 and the version number of the map information. . Note that the user inaccessible area 61 is prohibited from being rewritten and accessed by the user because of the format.

  The media ID is a unique number for identifying the regular SD card 60 from another regular SD card, and a different media ID is assigned to each regular SD card 60. Further, since the encryption method of the authentication key file can use a general encryption method, its detailed description is omitted.

  As shown in FIG. 7, the card authentication function unit 58 in FIG. 5 includes first reading means 71 that reads the media ID in the user inaccessible area 61 of the regular SD card 60, map information in the user accessible area 62, And a second reading unit 72 that reads the authentication key file, a decryption unit 73 that combines the authentication key file read by the second reading unit 72 to obtain a media ID and a version number, and a first reading unit 71 When the read media ID and the media ID acquired by the decryption unit 73 are collated, the ID collation determination unit 74 that determines whether or not both media IDs match each other, and both the media IDs match. And display means 75 for displaying the map information read by the second reading means 72 when the determination is made. In the present embodiment, the display unit 75 is also used by the display processing unit 22.

<Operation>
Hereinafter, the operation of the navigation device 1 will be described. FIG. 8 is a screen transition diagram of the main screen of the navigation apparatus 1, and FIG. 9 is a screen transition diagram regarding navigation. FIG. 10 is a diagram showing an AV screen display mode. Hereinafter, the operation of the navigation device 1 will be described with reference to FIGS.

  (D101) The opening screen (D101) will be described. When the accessory power supply of the vehicle is turned on and power is supplied to the navigation device 1, the control unit 20 executes the computer program stored in the ROM to initialize the navigation device 1, and various functions shown in FIG. Realize the part. Here, the video processing function unit 57 refers to the data of the opening screen stored in the ROM, and displays the opening screen on the touch panel 21. In addition, while the opening screen is displayed, the following processing is executed in each functional unit of the control unit 20. That is, the operation processing function unit 51 scans signals from the operation receiving unit 23, the operation button 24, and the reset button 18 to receive a user operation. The positioning function unit 52 processes the positioning information acquired by the GPS information receiving unit 9 and signals from the vehicle speed detection unit 10 and the gyro sensor 19, and measures the position of the vehicle.

Further, the card authentication function unit 58 accesses the regular SD card 60 inserted in the card memory interface 17. And the 1st reading means 71 of the card | curd authentication function part 58 is:
The media ID is read from the user inaccessible area 61 of the regular SD card 60. Further, the second reading means 72 reads the authentication file from the user accessible area 62 of the regular SD card 60. The decryption means 73 decrypts this authentication file and obtains the media ID and version number.

  The ID collation determination unit 74 collates the media ID read by the first reading unit 71 with the media ID acquired by the decryption unit 73, and determines whether or not both media IDs match.

  When the ID collation determination means 74 determines that both media IDs match, the display processing unit 22 accesses the regular SD card 60 inserted in the card memory interface 17 and the positioning function unit 52 performs positioning. Read the map data around the car position. When the ID collation determination unit 74 determines that the two media IDs do not match, the display processing unit 22 stops access to the regular SD card 60. Thereby, the display of the map data by the touch panel 21 stops. When the second reading means 72 reads the authentication key file from the SD card, the map information may be read together. In that case, if the media IDs do not match, the display of the map is stopped. At that time, the read map division is deleted.

  (D102) Next, the multi-screen (D102) will be described. Four seconds after the opening screen is displayed, the video processing function unit 57 operates the AV based on the image data of the operation buttons stored in the ROM and the map data read by the map data processing function unit 54. A multi-screen (D102) combining the screen and the navigation operation screen is generated and displayed on the touch panel 21. FIG. 11 is a diagram of a multi-screen. As shown in FIG. 11, the video processing function unit 57 displays an AV area screen on which AV operation buttons are arranged on the left side of the touch panel 21, and a navigation area screen on which navigation maps and operation buttons are arranged. Is displayed on the right side of the touch panel 21. The AV area is further divided into a source selection area in which operation buttons for selecting a source are collectively displayed and a source operation area in which buttons and information related to the selected source are displayed.

  As shown in FIG. 11, the video processing function unit 57 includes “radio”, “CD”, “one segment”, “iPod”, “external input”, “OFF”, and a source selection area in the AV area. Display the “AV” button. When any source button is touched, that source is selected. In the example of FIG. 11, “radio” is selected, and operation buttons and information related to the selected source such as a reception frequency, an AM / FM switching button, and a channel selection button are displayed in the source operation area. The state is illustrated. Therefore, at this time, the audio processing function unit 56 outputs the audio signal of AM broadcast received by the broadcast wave receiving unit 7 from the speaker via the amplifier 12. On the other hand, in addition to the map drawn on the navigation area based on the map data read by the map data processing function unit 54, the video processing function unit 57 “menu”, “destination”, “periphery”, “home” , “Navi”, “map enlargement”, and “map reduction” buttons are displayed. In the multi-screen (D102), the AV area is narrower than that of the full AV screen (D104) because there are two AV areas and a navigation area. Therefore, only the basic operation buttons and information related to the source are displayed in the source operation area of the multi-screen (D102).

  When the operation processing function unit 51 detects that the “AV” button is pressed in this state, the video processing function unit 57 transitions to the screen display state of the AV full screen (D104). The case where other buttons are pressed will be described in detail after explanation of the navigation full screen (D103) and the AV full screen (D104).

  (D103) Next, the entire navigation screen (D103) will be described. When the operation processing function unit 51 detects that the “navi” button displayed on the multi-screen (D102) has been pressed, the video processing function unit 57 gradually hides the AV area and displays the navigation area on the entire screen. To do. FIG. 12 is a diagram of a full navigation screen. As shown in FIG. 12, the video processing function unit 57 deletes the AV area and displays the navigation area on the touch panel 21 in full screen.

  As shown in FIG. 12, a map and operation buttons such as “menu” and “destination” are displayed in the navigation area as in the multi-screen (D102). Here, the video processing function unit 57 displays the screen so that the icon of the vehicle position displayed on the entire navigation screen is positioned at the center of the navigation area. For this reason, when the display screen of the touch panel 21 transitions from the multi-screen (D102) to the full navigation screen (D103), the icon of the vehicle position and the display of the map are slightly scrolled within the screen. On the other hand, the video processing function unit 57 displays the screen so that operation buttons such as “menu” and “destination” are at the same position on the display screen of the touch panel 21. For this reason, even if the display screen of the touch panel 21 transitions from the multi-screen (D102) to the navigation full screen (D103), the navigation operation buttons do not scroll on the screen of the touch panel 21 and continue to be displayed at the same position. However, only the “navigation” button is switched to the “AV + navigation” button. When the “AV + Navi” button is pressed, the video processing function unit 57 switches the display from the full navigation screen (D103) to the multi-screen (D102).

  (D104) Next, the AV full screen (D104) will be described. When the operation processing function unit 51 detects that the “AV” button displayed on the multi-screen (D102) is pressed, the video processing function unit 57 gradually hides the navigation area and displays the AV area on the entire screen. To do. FIG. 11 is a diagram of an AV full screen. As shown in FIG. 11, the video processing function unit 57 erases the navigation area and displays the AV area on the touch panel 21 in full screen.

  As shown in FIG. 13, in the AV area, as in the multi-screen (D102), “radio”, “CD”, “one-segment”, “iPod”, “external input”, and “OFF” buttons are source selection areas. Is displayed. Also, in the AV area, the source operation area is enlarged, and the names of broadcast stations, preset channel selection buttons, channel setting buttons, and sound setting buttons that have not been displayed on the multi-screen (D102) are displayed. Further, “CDIN” indicating that a CD is inserted in the CD drive 16 is displayed. Here, in the AV area, operation buttons such as “radio” displayed on the multi-screen (D102) are displayed at the same position. However, only the “navigation” button is switched to the “AV + navigation” button. Hereinafter, an area displayed on both the multi-screen and the AV full screen is referred to as an “AV normal area”, and an area displayed only on the AV full screen is referred to as an “AV extension area”. When the “AV + Navi” button is pressed, the video processing function unit 57 switches the display from the AV full screen (D104) to the multi-screen (D102). In the AV full screen (D104), since there is no navigation area, the AV area is wider than that in the multi-screen (D102). Therefore, all operation buttons and information related to the source are displayed in the source operation area of the AV full screen (D104). As described above, the source operation button and information display area displayed only in the case of the AV full screen (D104) are the “AV extension area”, and constitute a part of the source operation area. On the other hand, the source operation button and information display area displayed on both the multi-screen (D102) and the AV full-screen (D104) are “AV normal area”, and a part of the source operation area and the source selection area And make up.

The screen transition (FIG. 6) of the main screen of the navigation device 1 is as described above. Hereinafter, how the navigation area and the AV area move on the screen when the screen changes from the multi-screen (D102) to the navigation full screen (D103) or the AV full screen (D104) will be described in detail. FIG. 14 is a diagram illustrating how the AV area disappears when transitioning from the multi-screen (D102) to the full navigation screen (D103). FIG. 15 is a diagram showing how the navigation area disappears when transitioning from the multi-screen (D103) to the AV full-screen (D104). The video processing function unit 57 displays the screen so that the navigation area and the AV area are scrolled when the display is switched from the multi-screen to the navigation or the AV full screen. That is, when the video processing function unit 57 switches the display from the multi-screen to the entire navigation screen, the AV area gradually exits to the left side, in other words, the display area of the AV area gradually decreases. And the screen is displayed so that the display area of the navigation area is gradually increased. Further, when switching the display from the multi-screen to the AV full screen, the video processing function unit 57 displays the screen so that the AV area gradually enters the right side. Thereby, the user can feel as if the AV screen is inserted and removed on the navigation screen. Therefore, if you want to see the navigation screen, you can easily understand visually that the transition to the full navigation screen (D103) is made by pressing the “navigation” button displayed on the right side of the multi-screen (D102). If the user wants to see the AV screen, the user can easily understand that the AV screen is inserted and removed by pressing the “AV” button displayed on the left side of the multi-screen (D102). FIG. 16 is a conceptual diagram showing a state of screen transition of the main screen. As shown in FIG. 16, the user has a left side (corresponding to an AV screen in this embodiment) on a right side (corresponding to a navigation screen in the present embodiment) that can be seen through a display window. ) Can be operated on the main screen of the navigation device 1 with an image that is inserted and removed from the left side. Therefore, it is easy to understand where you are now and you can operate with confidence.

  (D201) Next, a screen related to navigation of the navigation device 1 will be described. First, the menu screen (D201) will be described. When the operation processing function unit 51 detects that the “menu” button displayed in the navigation area of the multi-screen (D102) or the entire navigation screen (D103) is pressed, the video processing function unit 57 displays the menu screen (D201). ) Is displayed on the touch panel 21. FIG. 17 is a diagram of the menu screen (D201). As shown in FIG. 17, the video processing function unit 57 displays a menu pop-up so as to start up from the “menu” button in the navigation area. Here, the video processing function unit 57 displays an animation so that the menu pop-up gradually rises from the “menu” button, and further allows the multi-screen (D102) to be seen below the pop-up. Note that a pop-up is an area displayed so as to rise from the button when a button displayed on the screen is pressed, for example, an area where menu items and the like are displayed. FIG. 18 is a diagram showing an animation when transitioning from the multi-screen (D102) to the menu screen (D201). When the “Menu” button on the multi-screen (D102) is pressed, a menu pop-up is displayed so as to start up from the “Menu” button. Therefore, the user can easily understand visually that the menu screen has been shifted from the multi-screen, and can operate with peace of mind. The menu screen (D201) displays user setting buttons such as icons and facility display, and favorite point editing buttons. The point information registered by the user is stored in the RAM in the control unit 20 by the user data processing function unit 55.

(D202) Next, the destination setting screen (D202) will be described. When the operation processing function unit 51 detects that the “destination” button displayed in the navigation area of the multi-screen (D102) or the entire navigation screen (D103) is pressed, the video processing function unit 57 sets the destination. The screen (D202) is displayed on the touch panel 21. That is, as shown in FIG. 19, the video processing function unit 57 displays an animation of a pop-up in which a destination setting button is arranged so as to rise from the “destination” button in the navigation area. When the operation processing function unit 51 detects that any of the destination setting buttons has been pressed, the video processing function unit 57 displays a screen corresponding thereto. For example, the video processing function unit 57 displays a screen for inputting characters when the “Search by 50 sounds” button is pressed, and displays a screen for selecting a prefecture or the like when the “Search by address” button is pressed. If the “Search by mobile phone link” button is pressed, a screen prompting the user to bring the mobile phone closer to the infrared receiver / light emitting unit 25 is displayed. If the “Search by history” button is pressed, the user has searched in the past. Display destinations with The communication data provided from the mobile phone by the infrared receiving / emitting unit 25 includes position information such as the latitude and longitude of the destination, or an address and a telephone number. When the destination is set by the screen displayed when the “50-sound search”, “search by address”, “search by mobile link”, or “search by history” button is pressed, the route guidance function unit 53 performs positioning. The function unit 52 searches for the shortest route to the vehicle position and destination measured by the function unit 52, and starts route guidance.

  (D203) Next, the peripheral facility search screen (D203) will be described. When the operation processing function unit 51 detects that the “periphery” button displayed in the navigation area of the multi-screen (D102) or the entire navigation screen (D103) is pressed, the video processing function unit 57 (D203) is displayed on the touch panel 21. That is, as shown in FIG. 20, the video processing function unit 57 displays an animation of a pop-up in which buttons for searching for nearby facilities are arranged so as to rise from the “periphery” button in the navigation area. Then, as in D203 described above, if any button is pressed, a corresponding screen is displayed. That is, when the “periphery” button is pressed, the video processing function unit 57 displays a button that allows the user to select a category of the facility to be searched, and when the search target category is specified, The facilities corresponding to the specified category, such as a gas station and a convenience store in the area, are searched and displayed in order of proximity to the vehicle.

  (D204) Next, the intersection enlargement screen (D204) will be described. The destination is set on the destination setting screen (D202) or the peripheral search screen (D203) described above, or the “Home” button displayed on the multi-screen (D102) or the entire navigation screen (D103) is displayed. When the destination is set by being pushed, route guidance by the route guidance function unit 53 is started. The route guidance function unit 53 performs route guidance based on the vehicle position measured by the positioning function unit 52 and the map data read from the card memory by the map data processing function unit 54. The route guidance function unit 53 displays an enlarged intersection screen (D204) and passes voice data for route guidance to the voice processing function unit 56 when the vehicle approaches an intersection that makes a right turn or a left turn. FIG. 21 is a diagram showing an intersection enlarged screen (D204). As shown in FIG. 21, an enlarged view of an intersection is displayed in the navigation area, and the route that the vehicle should travel is indicated by an arrow. At this time, audio / visual operation buttons are displayed in the AV area.

  Next, an AV screen display mode of the navigation device 1 will be described. As shown in FIG. 10, the AV screen of the navigation apparatus 1 is prepared with six screens of a radio mode, a CD mode, a one-segment mode, an iPod mode, an external input mode, and an off mode. When one of the source selection buttons or the “OFF” button prepared on the left side of the AV area is pressed, the video processing function unit 57 displays an AV operation screen of a mode corresponding to the button. For example, when the “radio” button is pressed, the video processing function unit 57 displays a radio frequency and a channel selection button as shown in FIG. The same applies to the CD and iPod buttons. In addition, when the “One Seg” button or the “External Input” button is pressed, the video processing function unit 57 displays a channel selection button or the like in the AV region and displays the navigation region from the video from the broadcast wave receiving unit 7. And switching to the video of the external audio / video input unit 8. However, when the brake detection unit 4 detects the release of the parking brake signal, the video processing function unit 57 stops the video display from the broadcast wave receiving unit 7 and the external audio / video input unit 8.

According to the present invention, the regular SD card 60 has a user inaccessible area 61 and a user accessible area 62, and a media ID (medium identification information) is stored in the user inaccessible area 61. The same media ID, map information, and version number are stored. Therefore, if the information in the regular SD card 60 is copied to another SD card, the media ID, map information and version number stored in the user accessible area 62 can be copied, but the user inaccessible area 61 can be copied. The stored media ID cannot be copied.

  Further, the card authentication function unit 58 collates the media ID stored in the user inaccessible area 61 of the regular SD card 60 with the media ID included in the authentication file stored in the user accessible area 62, Only when the card authentication function unit 58 determines that the media IDs match, the display processing unit 22 outputs the map information stored in the user accessible area 62 to the touch panel 21 and the touch panel 21 displays the map data. . Accordingly, it is possible to prevent the use of an SD card in which the media ID is not stored in the user inaccessible area 61, for example, an SD card copied from the regular SD card 60, and as a result, the regular SD card 60 can be copied. Can be suppressed.

<< Second Embodiment >>
In general, the map information stored in the regular SD card for a car navigation device is updated when, for example, a road or a building is added. This updated map information is sold as a package SD card or distributed to the user's PC (personal computer) via the Internet. Here, a case will be described in which updated map information is distributed over the Internet, and the user downloads it with a PC and writes it on a regular SD card.

  FIG. 22 shows an information processing apparatus 100 according to the second embodiment of the invention. The information processing apparatus 100 is configured by, for example, a personal computer executing a computer program. The information processing apparatus 100 includes a CPU, a memory, a hard disk, a display device, an input device (such as a keyboard and a mouse), a network I / F, and a removable storage medium driving device.

  The information processing apparatus 100 includes a communication unit 101, a download unit 102, a first reading unit 103, a second reading unit 104, a combination unit 105, an ID collation determining unit 106, a writing unit 107, SD card attaching / detaching means 108 for detachably inserting the SD card is provided.

  Next, each of the above components will be described. The communication means 101 in FIG. 22 is installed by the manufacturer or distributor of the navigation apparatus 1 and communicates with the map distribution server 121 that distributes the map information and its version number via the Internet 120. The download unit 102 downloads map information and version number from the map distribution server 121 via the communication unit 101. The first reading means 103 reads the media ID in the user inaccessible area 61 from the regular SD card 60 inserted in the SD card attaching / detaching means 107. The second reading means 104 reads the authentication key fill (including the media ID and version number) and map information in the user accessible area 62 of the regular SD card 60. The combination means 105 combines the authentication key file and acquires the media ID and version number.

  The ID collation determination unit 106 collates the media ID read by the first reading unit 103 with the media ID acquired by the compounding unit 105, and determines whether or not both media IDs match. The writing means 107 writes the downloaded map information and its version number in the user accessible area 62 of the regular SD card 60 when the ID collation determining means 106 determines that both media IDs match.

FIG. 23 shows a processing flow. Here, first, the download unit 102 downloads map information and a version number from the map distribution server 121 (S1). Next, the first reading means 103 reads the media ID from the user inaccessible area 61 of the regular SD card 60 (S2). Next, the second reading means 104 reads the authentication file and the map information from the user accessible area 62 of the regular SD card 60 (S3).

  Next, the decryption means 105 decrypts the authentication key file, and acquires the media ID and version number (S4). Next, the ID collation determination means 106 collates the media ID read by the first reading means 103 with the media ID acquired by the decryption means 105, and determines whether or not both media IDs match ( S5).

  In step (S5), if the collation determination unit 106 determines that both media IDs match (YES), then the ID collation determination unit 106 stores the downloaded version number in the regular SD card 60. It is determined whether or not the version number is newer (S6). If it is determined in step (S6) that the version number downloaded by the ID collation determination unit 106 is newer than the version number stored in the regular SD card 60 (YES), then the writing unit 107 The downloaded map information and version number are written in the user accessible area 62 of 60 as an authentication key file (S7). In the present embodiment, the writing unit 107 overwrites the downloaded map information and version number with the map information and version number stored in the regular SD card 60. Thereby, the process is terminated.

  If the ID collation determination means 106 determines that the two media IDs do not match (NO) in step (S5) or step (S6), or the version in which the downloaded version number is stored in the regular SD card 60 If it is determined that the number is not newer than the number (NO), the downloaded map information is deleted (S8), and the process is terminated. In addition, you may perform download of map information, when it is judged that it corresponds by media ID collation determination. (In this case, step (S1) may be inserted between step (S6) and step (S7). At this time, step (S8) is unnecessary.)

  According to the present invention, the media ID read by the first reading means 103 from the user inaccessible area 61 of the regular SD card 60 and the media ID included in the authentication file read by the second reading means 104 from the user accessible area 62 are provided. And the download means 102 downloads from the map distribution server 121 is newer than the version number included in the authentication key file stored in the authorized SD card 60. The map information and version number downloaded from the map distribution server 121 are overwritten on the map information and version number stored in the user accessible area 62 of the regular SD card 60.

  Therefore, it is possible to prevent the downloaded map information from being copied to an SD card in which the media ID is not stored in the user inaccessible area 61, such as an SD card copied from the regular SD card 60. That is, it is possible to suppress copying of the regular SD card 60 to another SD card.

1 is an external view of a navigation device according to a first embodiment of the present invention. It is a lineblock diagram of a navigation device concerning a first embodiment of the present invention. It is a figure which shows operation | movement of the display which concerns on 1st embodiment of this invention. It is a figure which shows operation | movement of the display which concerns on 1st embodiment of this invention. It is a functional block diagram of a control part concerning a first embodiment of the present invention. It is a screen transition diagram of the main screen of the navigation device according to the first embodiment of the present invention. It is a screen transition diagram of the navigation which concerns on 1st embodiment of this invention. It is a figure which shows the display mode of AV screen which concerns on 1st embodiment of this invention. It is a figure of the multi-screen which concerns on 1st embodiment of this invention. It is a figure of the navigation whole screen which concerns on 1st embodiment of this invention. It is a figure of AV full screen concerning 1st embodiment of this invention. It is a figure which shows how the AV area disappears according to the first embodiment of the present invention. It is a figure which shows how to disappear the navigation area | region which concerns on 1st embodiment of this invention. It is a conceptual diagram which shows the screen transition of the main screen which concerns on 1st embodiment of this invention. It is a figure of the menu screen which concerns on 1st embodiment of this invention. It is the figure which showed the animation at the time of changing to the menu screen from the multi screen which concerns on 1st embodiment of this invention. It is a figure of the destination setting screen which concerns on 1st embodiment of this invention. It is a figure of the surrounding facility search screen which concerns on 1st embodiment of this invention. It is a figure which shows the intersection enlarged screen which concerns on 1st embodiment of this invention. It is a figure of the destination setting screen which concerns on 1st embodiment of this invention. It is an enlarged view of the intersection which concerns on 1st embodiment of this invention. It is a block diagram which shows the structure of information processing in 2nd embodiment of this invention. It is a figure which shows the processing flow which concerns on 2nd embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 2 Main unit 3 Display unit 4 Brake detection part 5 Reverse detection part 6 Portable player interface 7 Broadcast wave reception part 8 Video input part 9 Information reception part 10 Vehicle speed detection part 11 Camera video input part 12 Amplifier 13A Opening / closing control part 13B Angle control unit 14 Angle sensor 15 Motor 16 Drive 17 Card memory interface 18 Reset button 19 Gyro sensor 20 Control unit 21 Touch panel 22 Display processing unit 23 Operation receiving unit 24 Operation button 25 Light emitting unit 26A terminal 26B terminal 26C terminal 26D terminal 26E terminal 26F terminal 26G terminal 26H terminal 27 insertion slot 28 card insertion slot 51 operation processing function section 52 positioning function section 53 route guidance function section 54 map data processing function section 55 user data Data processing function part 56 Audio processing function part 57 Video processing function part 58 Card authentication function part 60 Regular SD card 61 User inaccessible area 62 User accessible area 71 First reading means 72 Second reading means 73 Decoding means 74 ID verification Determination means 75 Display means 100 Information processing apparatus 101 Communication means 102 Download means 103 First reading means 104 Second reading means 105 Compounding means 106 ID collation determining means 107 Writing means 108 SD card attaching / detaching means 120 Internet 121 Map distribution server

Claims (5)

A user inaccessible area that is written at the time of manufacture of the storage medium, prohibited from being rewritten after manufacture, and prohibited from being accessed by the user,
A user accessible area where access by the user is permitted,
In the user inaccessible area, medium identification information set for each storage medium for identifying the storage medium is stored,
A storage medium in which the medium identification information and map information are stored in the user accessible area. A user-accessible area that is written at the time of manufacture of the storage medium, is prohibited from being rewritten after manufacture, and is prohibited from being accessed by the user, and a user-accessible area that is allowed to be accessed by the user; In the user inaccessible area, medium identification information set for each storage medium is stored to identify the storage medium, and in the user accessible area, the medium identification information and map information are stored. First reading means for reading the medium identification information in the user inaccessible area from a storage medium;
A second reading means for reading the medium identification information in the user accessible area and the map information;
The medium identification information read by the first reading means and the medium identification information read by the second reading means are collated to determine whether or not both of the medium identification information match. Collation determination means;
An information processing apparatus that displays the map information when the collation determining unit determines that the two pieces of medium identification information match, and stops displaying the map information when determining that the two pieces of medium identification information do not match. A communication means for communicating via a network with a map distribution server for distributing map information;
Download means for downloading the map information from the map information distribution server;
A user-accessible area that is written at the time of manufacture of the storage medium, is prohibited from being rewritten after manufacture, and is prohibited from being accessed by the user, and a user-accessible area that is allowed to be accessed by the user; In the user inaccessible area, medium identification information set for each storage medium is stored to identify the storage medium, and in the user accessible area, the medium identification information and map information are stored. First reading means for reading the medium identification information in the user inaccessible area from a storage medium;
Second reading means for reading the medium identification information in the user accessible area;
The medium identification information read by the first reading means and the medium identification information read by the second reading means are collated to determine whether or not both of the medium identification information match. Collation determination means;
A document that writes the downloaded map information to the user accessible area of the storage medium when the collation determining means determines that both the medium identification information match, and stops writing when it determines that they do not match. Including
An information processing apparatus comprising: Computer
A communication step of communicating via a network with a map distribution server for distributing map information;
A download step of downloading the map information from the map distribution server;
A user-accessible area that is written at the time of manufacture of the storage medium, is prohibited from being rewritten after manufacture, and is prohibited from being accessed by the user, and a user-accessible area that is allowed to be accessed by the user; In the user inaccessible area, medium identification information set for each storage medium is stored to identify the storage medium, and in the user accessible area, the medium identification information and map information are stored. A first reading step of reading the medium identification information in the user inaccessible area from a storage medium;
A second reading step of reading the medium identification information in the user accessible area;
The medium identification information read in the first reading step and the medium identification information read in the second reading step are collated to determine whether or not both of the medium identification information match. A collation determination step;
A document that writes the downloaded map information to the user accessible area of the storage medium when it is determined in the collation determination step that both the medium identification information match, and stops writing when it is determined that they do not match Included steps,
Information processing method to execute. On the computer,
A communication step of communicating via a network with a map distribution server for distributing map information;
A download step of downloading the map information from the map distribution server;
A user-accessible area that is written at the time of manufacture of the storage medium, is prohibited from being rewritten after manufacture, and is prohibited from being accessed by the user, and a user-accessible area that is allowed to be accessed by the user; In the user inaccessible area, medium identification information set for each storage medium is stored to identify the storage medium, and in the user accessible area, the medium identification information and map information are stored. A first reading step of reading the medium identification information in the user inaccessible area from a storage medium;
A second reading step of reading the medium identification information in the user accessible area;
The medium identification information read in the first reading step and the medium identification information read in the second reading step are collated to determine whether or not both of the medium identification information match. A collation determination step;
A document that writes the downloaded map information to the user accessible area of the storage medium when it is determined in the collation determination step that both the medium identification information match, and stops writing when it is determined that they do not match Included steps,
Information processing program that executes

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