WO2006018979A1 - 情報記録媒体、地図データ更新装置 - Google Patents
情報記録媒体、地図データ更新装置 Download PDFInfo
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- WO2006018979A1 WO2006018979A1 PCT/JP2005/014298 JP2005014298W WO2006018979A1 WO 2006018979 A1 WO2006018979 A1 WO 2006018979A1 JP 2005014298 W JP2005014298 W JP 2005014298W WO 2006018979 A1 WO2006018979 A1 WO 2006018979A1
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B29/00—Maps; Plans; Charts; Diagrams, e.g. route diagram
- G09B29/10—Map spot or coordinate position indicators; Map reading aids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/38—Electronic maps specially adapted for navigation; Updating thereof
- G01C21/3804—Creation or updating of map data
- G01C21/3859—Differential updating map data
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
Definitions
- the present invention relates to a technical field of an information recording medium such as a DVD, for example, and a map data updating apparatus that performs a map data updating process using such an information recording medium.
- the navigation device uses the map data stored in the CD-ROM, DVD-ROM, or hard disk to display the current position of the target object of the navigation such as the vehicle on a display device such as a display. Provide various functions such as route guidance.
- map data that reflects the latest road data by rewriting map data with differential data.
- “difference data” related to map data refers to a data portion (map data portion) that is different between the two map data before and after the update.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2002-5669
- this recording medium is a write-once type recording medium such as a DVD-R, for example.
- a new recording medium needs to be obtained every time and the burden on the user increases.
- the recording medium is a rewritable recording medium such as a DVD-RW, it is sufficient to prepare a single recording medium.
- the present invention has been made in view of, for example, the conventional problems described above.
- the present invention provides an information recording medium and a map data update device capable of relatively easily updating map data. Let it be an issue.
- An information recording medium of the present invention is an information recording medium used for updating map data in order to solve the above-described problem, and (0 obtains differential data used for updating the map data)
- each of the acquisition program and the update program is recorded in advance in the first area, for example, by an emboss pit or a recording mark.
- the first area is read-only and no new data can be recorded.
- difference data indicating the update status of the map data is recorded.
- the difference data acquired by executing the acquisition program is recorded.
- the update program recorded in the first area is executed, and the map is obtained using the difference data recorded in the second area. Data is updated.
- the recording of difference data in the second area (that is, the acquisition of difference data) can be performed by acquiring the information recorded in the first area if the information recording medium is loaded on, for example, a data acquisition device described later. It can be executed by executing the program. Therefore, if you run an update program, etc. Since the update of the map data can be completed, the user can update the map data with less burden. That is, the user can enjoy a great advantage that there is no need to perform special operations and processing (or troublesome operations and settings).
- the map data can be repeatedly updated a plurality of times using the same information recording medium. Therefore, it is not necessary to obtain a new information recording medium every time map data is updated. As a result, the information recording medium is not discarded every time the map data is updated, and this has the advantage of not adversely affecting the global environment. Of course, it is needless to say that the rewriting of the difference data does not require the user to perform a special operation or processing by the operation of the acquisition program or the like. Since the update program is recorded in the read-only first area, it has the advantage of not being tampered with.
- the difference data is encrypted and recorded in the second area, and the encrypted process of decrypting the encrypted difference data is performed in the first area.
- a decryption program to be performed is recorded in advance.
- the differential data is decrypted without performing any special operation or processing. Therefore, it is possible to reduce the burden on the user who updates the map data using the information recording medium. Further, the update program may be configured to be able to execute differential data encryption processing.
- the difference data Since the difference data is recorded in the second area in an encrypted state, the difference data is not recorded on the information recording medium in which the decryption program is recorded in the first area. If so, the differential data cannot be decrypted. Therefore, even if there is a user who has illegally obtained this encrypted difference data, the difference data cannot be used, so that illegal copying or outflow of the difference data can be effectively prevented. Can do. [0015] It should be noted that, from the viewpoint of preventing this illegal duplication or outflow, the decryption of the difference data may be set to be executable only by the update program recorded in the first area. I like it!
- a map data update device of the present invention is a map data update device that updates map data using the above-described information recording medium of the present invention (including various aspects thereof).
- the difference data and the update program are read by the operation of the reading means. Then, when the read update program is executed, the update of the map data is performed based on the read difference data by the operation of the update means. Therefore, it is possible to update the map data relatively easily and appropriately while enjoying the various benefits of the information recording medium according to the present invention.
- the map data updating apparatus of the present invention can also adopt various aspects.
- the difference data is encrypted and recorded in the second area, and the encrypted difference data is stored in the first area.
- a decryption program for performing a single decryption is recorded in advance, and further comprising decryption means for decrypting the encrypted difference data by executing the decryption program,
- the updating means updates the map data based on the decoded difference data.
- map data update device of the present invention further includes a selection unit that selects a part of the difference data, and the update unit selects the selected one of the difference data.
- the map data is updated based on the data portion.
- the difference data includes unnecessary data! /
- a part of the data part necessary for the update is selected by the operation of the selection unit, and the part of the data part is selected. Based on this, the map data is updated. Therefore, it is possible to further improve convenience for users who do not need to perform unnecessary update using unnecessary difference data.
- the read-only first area in which the update program is recorded in advance and the second area for recording the difference data are provided. Accordingly, it is possible to update the map data relatively easily and appropriately.
- the reading means and the updating means are provided.
- FIG. 1 is a schematic plan view of an optical disc according to the above embodiment.
- FIG. 2 is a data structure diagram conceptually showing a data structure of an optical disc (particularly, a reproduction-only area) according to the present embodiment.
- FIG. 3 is a schematic plan view of the optical disc after predetermined difference update data is recorded on the optical disc according to the embodiment.
- FIG. 4 is a data structure diagram conceptually showing a data structure of the optical disc (especially a recordable area) after predetermined difference update data is recorded on the optical disc according to the embodiment.
- FIG. 5 is an explanatory diagram conceptually showing the basic structure of the map data updating system in the example.
- FIG. 6 is a flowchart conceptually showing a flow of operations related to downloading differential update data in the map data update operation in the map data update system according to the embodiment. It is
- FIG. 7 is a flowchart conceptually showing a flow of actual update operations in the map data update operation in the map data update system in the example.
- FIG. 1 is a schematic plan view of the optical disc 100 according to the present embodiment
- FIG. 2 is data conceptually showing the data structure of the optical disc 100 according to the present embodiment (particularly, the read-only area 104).
- FIG. 3 is a schematic plan view of the optical disc 100 after a predetermined difference update data is recorded on the optical disc 100 according to the present embodiment
- FIG. 3 is a data structure diagram conceptually showing the data structure of the optical disc 100 (particularly, the recordable area 106) after recording predetermined difference update data on the optical disc 100 according to FIG.
- the optical disc 100 has a disk shape with a diameter of about 12 cm, for example, like CD and DVD.
- a read-only area 104 (that is, a specific example of “first area” in the present invention) in which various programs described later are recorded in advance is provided. These various programs are recorded in advance in the read-only area 104 by, for example, embossed pits having a predetermined physical shape or premarks formed by irradiating the recording surface with laser light.
- a recordable area 106 (that is, data can be recorded only once or a plurality of times by various recording methods such as a magneto-optical method and a phase change method)
- a specific example of the “second area” in the present invention is provided.
- the recordable area 106 is preferably configured such that various data such as a DVD-RW recording area can be recorded a plurality of times (that is, rewritable).
- the optical disc 100 is particularly used for updating map data used by, for example, a navigation device.
- the update of the map data is performed by the operation of various programs recorded in the reproduction-only area 104. That is, for example, it is used for updating map data including information indicating roads, intersections, buildings, etc. to newer (or latest) map data.
- map data is updated using the update data 123 (see FIG. 4).
- an automatic download program 111 In the reproduction-only area 104, as shown in FIG. 2, an automatic download program 111, an automatic update program 112, and a decryption program 113 are recorded as various programs. It is.
- the automatic download program 111 constitutes one specific example of the "acquisition program" in the present invention, and is executed to automatically download the differential update data 123 from, for example, a map data update server described later. Program.
- the downloaded difference update data 123 may be recorded in the recordable area 106.
- the automatic update program 112 constitutes one specific example of the "update program" in the present invention, and actually updates the map data using the difference update data 123 recorded in the recordable area 106 ( Update program).
- Update program the program is executed to create new (or latest) map data by combining the difference update data 123 with the map data used by the navigation device or the like.
- the decryption program 113 constitutes one specific example of the “decryption program” in the present invention, and is for decrypting the differential update data 123 that is encrypted and recorded in the recordable area 106.
- the differential update data 123 may be already encrypted when the automatic download program 111 is downloaded, or the decryption program 113 (or the encryption program recorded in the reproduction-only area 104) may be used. It may be configured such that after downloading, it is encrypted by the operation of).
- the differential update data 123 downloaded by the automatic download program 111 described above is recorded.
- the difference update data 123 may be recorded in advance at the time of manufacturing the optical disc 100, or may be configured so that the user obtains the force by himself / herself and records the force! /.
- predetermined difference update data 123 is recorded in this recordable area 106 (or a part thereof), for example, as shown in FIG. 3, the inner circumference of the recordable area 106 is recorded.
- the difference update data 123 is recorded in a part of the recording area 106a, and the remaining part of the recording area 106b is not recorded.
- an area code 121 and a version code 122 may be recorded in the recordable area 106.
- the area code 121 is information that can identify the area of the map data updated by the difference update data 123. For example, when the map data for Hokkaido is updated by one difference update data 123, in addition to the one difference update data 123, an area code 121 indicating that the difference update data 123 is data related to Hokkaido. Is recorded in the recordable area 10 6. Alternatively, when the map data of Tokyo 23 wards is updated by other differential update data 123, in addition to the other differential update data 123, it indicates that the differential update data 123 is data related to Tokyo 23 wards. Area code 121 is recorded in recordable area 106.
- the version code 122 is information indicating the version of the difference update data 123. That is, the content of the differential update data 123 can vary greatly depending on when the map data serving as a reference for the update is created and when the differential update data 123 is created. Accordingly, the map data is preferably updated by selectively using the desired difference update data 123 based on the version code 122.
- old map data recorded on a hard disk or the like in the navigation device can be updated to newer (or latest) map data.
- the map data can be updated automatically and relatively easily. It can be carried out. Therefore, for example, the map data can be updated appropriately without causing a user such as a navigation apparatus to perform any special operation or processing or incur an excessive burden. In other words, a user-friendly service can be provided to the user.
- the differential update data 123 is recorded in the recordable area 106, it is possible to erase the recorded differential update data 123 and record new differential update data 123 many times. . In other words, it is possible to update the map data that is expected to be updated frequently by using a single optical disc 100 a plurality of times. For this reason, the map It is also convenient for users who do not need to obtain an update optical disk each time the data is updated.
- the map data producer side that is, the manufacturer side
- the map data producer side is superior in terms of cost and labor, etc., because it is not necessary to manufacture an optical disc for update every time the map data is updated.
- it is possible to update the map data a plurality of times by repeatedly using one optical disc 100 without discarding the optical disc 100 by one update. For this reason, the amount of waste can be reduced, and it has a great advantage that it does not adversely affect the global environment.
- the difference update data 123 is downloaded in an encrypted state and recorded in the recordable area 106.
- a decryption program 113 recorded in the reproduction-only area 104 is required. Therefore, even if there is a person who illegally acquires the differential update data 123, the decryption program 113 cannot be decrypted unless the differential update data 123 is recorded on the regular optical disc 100 recorded in advance. As a result, the map data cannot be updated. As a result, unauthorized use or unauthorized duplication of the differential update data 123 can be effectively prevented.
- the encrypted difference update data 123 is stored only in the decryption program 113 recorded in advance in the reproduction-only area 104. It is preferable that the decryption is possible and the decryption is impossible depending on other programs.
- the automatic download program 111, the automatic update program 112, and the decryption program 113 are recorded in the reproduction-only area 104 in advance. For this reason, it is possible to suitably prevent the inconvenience that a malicious user can rewrite these various program capabilities into a state in which unauthorized use is possible.
- the automatic download program 111, the automatic update program 112, and the decryption program 113 may be recorded in the recordable area 106. Further, from the viewpoint of simply reducing the burden on the user when updating the map data, it is sufficient if the automatic download program 111, the automatic update program 112, and the decryption program 113 are recorded in advance. Therefore, it has only the recordable area 106 and a playback-only area.
- the optical disk without the key 104 may be used. Or, it is an optical disc that has only the reproduction-only area 104 and no recordable area 106, and has an automatic download program 111, an automatic update program 112, a decryption program 113, a difference update data 123, and the like recorded in advance. May be.
- the initial difference update data 114 may be recorded in the reproduction-only area 104 in advance.
- the initial difference update data 114 is obtained by comparing the time when the map data is created (or a predetermined time) with the time when the optical disc 100 according to the present embodiment is manufactured. Alternatively, it is differential update data indicating roads etc. that have undergone some change.
- the initial difference update data 114 may be configured to be recorded in advance in the recordable area 106 as well as the force recorded in the reproduction dedicated area 104.
- the arrangement and size of the reproduction-only area 104 and the recordable area 106 shown in FIG. 1 are merely specific examples, and needless to say, the arrangement is not limited to this.
- the reproduction-only area 104 may be provided relatively on the outer peripheral side
- the recordable area 106 may be provided relatively on the inner peripheral side, or may be configured exclusively for reproduction in any other manner.
- Each of the area 104 and the recordable area 106 may be provided.
- a plurality of read-only areas 104 and a plurality of recordable areas 106 may be provided.
- the optical disc 100 is not limited to an optical disc having a single recording layer, and is a two-layer single side (ie, dual layer) or a double-layer double side (ie, dual layer double side). Also good. Furthermore, it is not limited to an optical disc having two recording layers, and may be a multilayer optical disc having three or more layers! /.
- the automatic download program 111 is recorded in the reproduction-only area 104.
- the aspect is not limited to downloading.
- another information recording medium power difference update data 123 such as a hard disk may be acquired.
- an automatic copy program or the like may be recorded in the reproduction-only area 104 in advance.
- map data update system that downloads differential update data or uploads map data will be described with reference to FIGS.
- FIG. 5 is an explanatory diagram conceptually showing the basic structure of the map data updating system 500 according to this embodiment.
- the map data update system 500 includes a data acquisition device 200, a navigation device 300, and a map data update Sano OO.
- the data acquisition device 200 is configured to include, for example, a personal computer or a workstation, and is configured to be able to download the differential update data 123 from the map data update server 400. More specifically, the data acquisition device 200 includes a CPU 201, a memory 202, an optical disk drive 203, and an external interface 204.
- the CPU 201 is connected to the memory 202, the optical disk drive 203, and the external interface 204 via a bus, and controls the entire data acquisition apparatus 200 by giving instructions to various control means.
- the automatic download program 111 recorded in advance on the optical disc 100 is executed on the CPU 201 so that the map data update server 00 can download the differential update map data 123 via the external interface 204. .
- the memory 202 includes a RAM area for temporarily storing data, for example, in general data processing in the data acquisition device 200.
- the memory 202 includes a ROM area in which a program (that is, firmware) for performing an operation as the data acquisition device 200 is stored.
- the automatic download program 111 recorded in advance on the optical disc 100 is temporarily stored in the RAM area of the memory 202 during its execution.
- the optical disc drive 203 records various data on the optical disc 100 or reads various data recorded on the optical disc 100.
- the automatic update program 111 etc. recorded in advance on the optical disc 100 is read and the difference update location downloaded is read.
- the external interface 204 includes, for example, a modem, a DSU, a router, and the like, and is configured to be able to execute transmission / reception of various data with the map data update Sano OO via a wired or wireless network capable of bidirectional communication. Being sung.
- the navigation device 300 is configured to be able to execute navigation processing for automobiles, for example.
- the map data recorded on the hard disk or the like included in the navigation device 300 using the difference update data 123 can be updated.
- the navigation apparatus 300 includes a CPU 301, a memory 302, an optical disk drive 303, a hard disk 304, and a navigation processing unit 305.
- the CPU 301 constitutes a specific example of "update means” and “decoding means” in the present invention, and is connected to the memory 302, the optical disk drive 303, the hard disk 304, and the navigation processing unit 305 via a bus. By instructing various control means, the entire navigation device 300 is controlled.
- the automatic upload program 112 recorded in advance on the optical disc 100 is executed on the CPU 301 so that the map data can be updated using the differential update map data 123 recorded on the optical disc 100.
- the decryption program 113 recorded in advance on the optical disc 100 is executed on the CPU 301, so that decryption of the encrypted difference update map data 123 recorded on the optical disc 100 can be executed. Consists of! RU
- the memory 302 includes a RAM area and a ROM area in the same manner as the memory 202 included in the data acquisition device 200 described above.
- the automatic upload program 112 and the decryption program 113 recorded in advance on the optical disc 100 are temporarily stored in the RAM area of the memory 202 during execution. Further, the memory 302 may be used for temporarily storing data during the navigation processing.
- the optical disk drive 303 constitutes one specific example of the “reading unit” in the present invention, and records various data on the optical disk 100 in the same manner as the optical disk drive 203 provided in the data update device described above, or Reading various data recorded on the optical disc 100.
- the automatic upload program 11 1 recorded on the optical disc 100 is configured to read the decryption program or the differential update map data 123 and the like. Yes.
- the hard disk 304 constitutes a specific example of the "storage means" in the present invention, and records the map data actually used in the navigation process.
- the map data may be map data conforming to the KIWI format including, for example, node data indicating points on the map and link data indicating the relationship between at least two points.
- the navigation processing unit 305 includes, for example, a GPS processing unit, an independent positioning processing unit, a route search processing unit, a route guidance processing unit, and the like, and uses updated map data recorded on the hard disk 304. In this way, various navigation processes can be executed. Note that the navigation processing unit 305 may be configured to be integrated with the CPU 301.
- a configuration in which the data acquisition device 200 is included in a part of the navigation device 300 may be adopted. That is, the navigation device 300 may be configured to download the differential update data 123 and also perform an update process.
- the map data update server 400 includes, for example, a large server such as a personal computer, a workstation, or a mainframe, and the difference update data 123 is transferred to the data acquisition device 200 (or the navigation device 300). It is configured to be deliverable!
- a difference update map data DB (database) 401 for storing the difference update data 123 is provided.
- the map data update server 00 and the data acquisition device 200 (or the navigation device 300) are connected by a wired or wireless network network capable of bidirectional communication.
- FIG. 6 is a flowchart conceptually showing the flow of the operation related to the download of the differential update data 123 in the update operation of the map data
- FIG. 7 is the actual update of the update operation of the map data. It is a flowchart which shows notionally the flow of operation
- the optical disc 100 is first loaded onto the optical disc drive 203 of the data acquisition device 200 (step S101). Subsequently, the operation of the optical disk drive 203 controlled by the CPU 201 The automatic download program 111 recorded in the read-only area 104 of the optical disc 100 thus read is read (step S102).
- step S103 it is determined under the control of the CPU 201 whether or not the force to actually start downloading the difference update data 123 is determined. For example, if the user gives an instruction to execute the download, it may be determined that the download is started.
- step S 103 determines that the download has not yet started. If it is determined that the download has not yet started (step S 103: No), the difference update data 123 is not downloaded, and the process proceeds to step S 107.
- step S 103 the automatic download program 111 read in step S 102 is stored on the data acquisition device 200 (more specifically, data acquisition).
- the difference update data 123 is downloaded through the external interface 204 (step S104). That is, under the control of the CPU 201 in which the automatic download program 111 is executed, a download request is made from the data acquisition device 200 to the map data update server 400, and in response to this, the difference update data 123 is received from the map data update server 00. It is transmitted to the data acquisition device 200.
- the differential update data 123 is preferably already encrypted. However, the data may be transmitted without being encrypted and encrypted on the data acquisition apparatus 200 side by, for example, the operation of the decryption program 113.
- the downloaded differential update data 123 is recorded in the recordable area 106 of the optical disc 100 by the operation of the optical disc drive 203 under the control of the CPU 201 in which the automatic download program 111 is executed (step S1). S 105).
- step S106 it is determined whether or not the download has been completed. That is, it is determined whether or not all the difference update data 123 to be downloaded has been downloaded.
- step S 106 if it is determined that the download has not been completed (step S 106:
- step S104 the process returns to step S104 again, and the differential update data 123 is downloaded and recorded on the optical disc 100 continuously.
- step S106 when it is determined that the download is completed (step S106: Yes), the optical disk 100 is ejected from the data acquisition device 200 (step S107). Subsequently, as shown in FIG. 7, when the map data recorded on the hard disk or the like of the navigation device 300 is actually updated, the optical disk 100 is first inserted into the optical disk drive 203 of the navigation device 300. Is loaded (step S201).
- step S 202 the automatic update program 112 recorded in the read-only area 104 of the loaded optical disc 100 is read by the operation of the optical disc drive 303 under the control of the CPU 301 (step S 202).
- step S203 it is determined under the control of the force CPU 301 whether or not the map data update (update) is actually started using the difference update data 123 (step S203). For example, if the user has issued an instruction to actually execute the update, it may be determined that the update of the map data is started.
- step S 203 If it is determined that the update of the map data has not yet started as a result of this determination (step S 203: No), the map data is not updated using the difference update data 123, and the process proceeds to step S 208. Proceed with
- step S203 when it is determined that the update of the map data is actually started (step S203: Yes;), it is recorded in the read-only area 104 of the optical disc 100 by the operation of the optical disc drive 303 under the control of the CPU 301.
- the decryption program 113 is read (step S204). Subsequently, the decryption program 113 is executed on the navigation device 300 (more specifically, on the CPU 301 included in the navigation device 300), so that the difference update is recorded in the recordable area 106 of the optical disc 100.
- the data 123 is decrypted (step S205).
- the automatic update program 112 read in step S202 is executed on the navigation device 300 (more specifically, on the CPU 301 included in the navigation device 300), and decrypted in step S205.
- the map data already recorded on the hard disk 304 is updated using the difference update data 123 (step S206). That is, for example, in the map data, the data portion corresponding to the point added, changed, or deleted indicated by the differential update map data 123 is rewritten, and the hard disk as new (or latest) map data is rewritten. Recorded in 304.
- Step S207 it is determined whether or not the update of the map data is completed under the control of the CPU 301.
- step S207 it is determined whether or not the update of the map data is completed under the control of the CPU 301.
- step S207: No when it is determined that the update of the map data has not been completed (step S207: No), the process returns to step S204 again, and the update of the map data is continued.
- step S207: Yes when it is determined that the update of the map data has been completed (step S207: Yes), the optical disc 100 is ejected from the navigation device 300 (step S208).
- a part of the map data may be selectively updated. Specifically, for example, it is assumed that difference update data 123 relating to map data of Hokkaido and Kanto is recorded in the recordable area 123. At this time, for example, if the user lives in Hokkaido, the map data may be updated by selectively using the difference update data 123 regarding the map data of Hokkaido.
- the information recording medium and the map data update device can be used for a high-density optical disk such as a DVD, for example, and can be used for a map data update process using such a high-density optical disk. It is.
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Cited By (2)
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JP2008250670A (ja) * | 2007-03-30 | 2008-10-16 | Aisin Aw Co Ltd | データ更新システム及びコンピュータプログラム |
JP2011138588A (ja) * | 2009-12-29 | 2011-07-14 | Sharp Corp | 記録再生装置および記録再生装置の制御方法 |
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2005
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JP2000148504A (ja) * | 1998-11-12 | 2000-05-30 | Sony Corp | 情報処理装置及び方法並びに記録媒体 |
JP2002005669A (ja) * | 2000-06-16 | 2002-01-09 | Mitsubishi Electric Corp | コンピュータ読取可能な再書込み可能記録媒体、地図情報更新システムおよびナビゲーション装置 |
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JP2003315063A (ja) * | 2002-04-25 | 2003-11-06 | Aisin Aw Co Ltd | ナビゲーション装置 |
Cited By (3)
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JP2008250670A (ja) * | 2007-03-30 | 2008-10-16 | Aisin Aw Co Ltd | データ更新システム及びコンピュータプログラム |
US8386743B2 (en) | 2007-03-30 | 2013-02-26 | Aisin Aw Co., Ltd. | Data update system and computer program |
JP2011138588A (ja) * | 2009-12-29 | 2011-07-14 | Sharp Corp | 記録再生装置および記録再生装置の制御方法 |
Also Published As
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JPWO2006018979A1 (ja) | 2008-07-31 |
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