WO2011048628A1 - 地図情報処理装置 - Google Patents
地図情報処理装置 Download PDFInfo
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- WO2011048628A1 WO2011048628A1 PCT/JP2009/005520 JP2009005520W WO2011048628A1 WO 2011048628 A1 WO2011048628 A1 WO 2011048628A1 JP 2009005520 W JP2009005520 W JP 2009005520W WO 2011048628 A1 WO2011048628 A1 WO 2011048628A1
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- information
- mesh
- update
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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
- G09B29/003—Maps
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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
- G01C21/3863—Structures of map data
- G01C21/387—Organisation of map data, e.g. version management or database structures
- G01C21/3878—Hierarchical structures, e.g. layering
Definitions
- the present invention relates to a map information processing apparatus that processes map information, and more particularly to a technique for updating map information.
- Patent Document 1 discloses that the departure point or / and the destination are in the vicinity of the boundary of the administrative division even when the version of the map data of the adjacent administrative division is different due to the update of the map data for each administrative division. Discloses an in-vehicle navigation device that can perform an appropriate route search.
- a lower layer map composed of a shared mesh of a part corresponding to the boundary area of adjacent administrative divisions and a dedicated mesh of a part corresponding to the area of the other administrative divisions is represented by an HDD (Hard Disk Drive )
- the control unit updates the lower level map of the administrative division (A prefecture) to be updated
- the existing lower level map of the adjacent administrative division (B prefecture) When it is determined that it is not the same version as the lower layer map, the lower layer map for updating the A prefecture is stored in the HDD so as to overlap the shared mesh portion of these data with respect to the existing lower layer map of the B prefecture.
- Patent Document 2 discloses a map data update system that appropriately updates map data.
- map information is divided into arbitrary areas, and the map information is updated in units of arbitrary areas.
- the arbitrary areas either administrative districts such as prefectures, meshes or blocks are adopted. .
- map data is stored separately in a dedicated mesh composed of only one administrative district and a shared mesh composed of a plurality of administrative districts.
- the number of files to be managed increases and management becomes complicated.
- administrative districts are integrated or divided, the configuration of the exclusive mesh and the shared mesh changes, so that there is a problem that the provision range of the updated map information cannot be easily changed.
- Patent Document 2 when an arbitrary area is set as a mesh or a block unit, if an attempt is made to divide the area so as to include administrative areas such as prefectures, the mesh shared by the plurality of administrative areas is one of the administrative areas. There is a problem that it can only be included.
- the present invention has been made to solve the above-mentioned problems, and an object thereof is to provide a map information processing apparatus that can easily manage and update map information.
- the map information processing apparatus is a map information in which a creation range is divided and managed by a mesh, and includes an area map file provided corresponding to an arbitrary area and mesh management information for managing the mesh Using a map information storage device that stores information, an update information acquisition device that acquires update information for updating map information stored in the map information storage device, and update information acquired by the update information acquisition device
- a processor that updates the map information stored in the map information storage device for each area map file, and each area map file stores mesh information that is map information of a mesh including an arbitrary area corresponding to itself.
- the mesh management information includes a mesh management record provided corresponding to the mesh, and the mesh management record In the mesh stored in multiple area map files, including file specifying information for specifying area map files including mesh, version information of area map file, and mesh storage position information indicating the storage position of mesh information in area map file
- file specifying information in the corresponding mesh management record specifies the latest version area map file.
- the map information processing apparatus of the present invention it is easy to manage a set of meshes including an arbitrary area with one file, and updating can be performed in units of area map files including the arbitrary area. Further, since the area map file is simply replaced and only management information for managing them is rewritten, the updating operation is easy.
- FIG. 3 is an example showing a mesh that stores a map information creation range partitioned into meshes shown in FIG. 2 in an area map file corresponding to arbitrary areas AF. It is a figure which shows the example of the area
- FIG. 1 is a block diagram showing a configuration of a map information processing apparatus according to Embodiment 1 of the present invention.
- the map information processing apparatus includes an input device 1, a position detection device 2, an update information acquisition device 3, a map information storage device 4, a processor 5, and an output device 6.
- the input device 1 generates an instruction signal in response to a user operation or instruction and sends it to the processor 5.
- the input device 1 is, for example, a voice recognition device that recognizes a user's voice and generates an instruction signal, an operation button that generates an instruction signal according to a user's manual operation, or at least one of other input devices. It consists of two.
- the position detection device 2 detects the current position of the vehicle on which the map information processing apparatus is mounted using, for example, a GPS (Global Positioning System) receiver, a vehicle speed sensor, and an angular velocity sensor (all of which are not shown).
- the current position detected by the position detection device 2 is sent to the processor 5 as position information.
- the update information acquisition device 3 is composed of, for example, a memory card reader, reads update information stored in the memory card, and sends it to the processor 5. Details of the update information read by the update information acquisition device 3 will be described later.
- a communication device that acquires update information by communication from a server that manages map information for update can be used.
- the map information storage device 4 is constituted by, for example, a hard disk drive using a hard disk as a storage medium, and stores map information and information for managing the map information in advance. Information stored in the map information storage device 4 is read by the processor 5.
- the processor 5 performs various kinds of map information processing using the instruction signal sent from the input device 1, the position information sent from the position detection device 2, and the map information read from the map information storage device 4.
- the map information processing includes a map matching process for estimating the current position of the vehicle based on the position information obtained from the position detection device 2 and the map information read from the map information storage device 4, and a route from the departure place to the destination.
- Route calculation processing for calculating the route, route display processing for displaying a candidate for a suitable route obtained by route calculation on the screen of the display device that is the output device 6 together with the road map, from the departure point according to the preferred route
- the processor 5 updates the map information stored in the map information storage device 4 and information for managing the map information using the update information sent from the update information acquisition device 3.
- the output device 6 presents various information to the user according to the display information sent from the processor 5.
- the output device 6 includes a display device that displays a map, a current position, a route, guidance information, a search result, and the like, and a voice generation device that gives voice instructions or guidance to the user. Yes.
- the map information creation range is defined by a rectangular area surrounded by latitude and longitude lines.
- the map information is hierarchized according to the degree of detail of the information, and the map information creation range is divided into meshes that are rectangular areas surrounded by latitude lines and meridians at predetermined intervals for each hierarchy. Managed.
- Fig. 2 shows examples of meshes in each layer.
- there are three hierarchies such as level 0, level 1 and level 2, and the level of detail increases in the order of level 2 ⁇ level 1 ⁇ level 0.
- the creation range is partitioned into 8 ⁇ 8 meshes, at level 1 it is partitioned into 4 ⁇ 4 meshes, and at level 2 it is partitioned into 2 ⁇ 2 meshes.
- the left end longitude of the rectangular area that is the creation range Wxmin
- the right end longitude is Wxmax
- the bottom latitude is Wymin
- the top latitude is Wymax
- the width of the rectangular area in the longitude direction is Wx
- the width in the latitude direction is Wy
- Wx Wxmax-Wxmin
- Wy Wymax-Wymin
- the width in the longitude direction of the level 0 mesh is Wx / 8
- the width in the latitude direction is Wy / 8
- the width in the longitude direction of the level 1 mesh is Wx / 4
- the width in the latitude direction is Wy / 4
- the width in the longitude direction of the level 2 mesh is Wx / 2
- the width in the latitude direction is Wy / 2.
- mesh coordinates (X, Y) are assigned to each mesh.
- the mesh coordinate X 0, 1, 2,... Are assigned in order from the left end mesh to the right end, and as the mesh coordinate Y, 0, 1, 2,. Is granted.
- FIG. 3 shows an example of an arbitrary area existing within the creation range, and shows a state where arbitrary areas such as A, B, C, D, E, and F exist.
- map information divided into meshes
- mesh information is called mesh information.
- storing mesh information of a mesh in an area map file is described as “store the mesh in an area map file”, and the mesh included in an arbitrary area corresponding to the area map file. It is described as “region map file mesh”.
- FIG. 4 is an example showing a mesh that stores the map information creation range partitioned into meshes shown in FIG. 2 in an area map file corresponding to arbitrary areas A, B, C, D, E, and F.
- the mesh includes only the arbitrary area A as in the level 0 mesh (1, 1)
- the mesh is stored only in the area map file corresponding to the arbitrary area A.
- the level 0 mesh In the case of a mesh including three arbitrary areas A, B, and C as in (2) and (3), the mesh is stored in all of the area map files corresponding to the arbitrary areas A, B, and C.
- the area map file includes all meshes that include at least part of the arbitrary area corresponding to the area map file. become.
- an area map file representing map information in an arbitrary area of each hierarchy is stored corresponding to an arbitrary area included in the map information creation range, and a mesh for managing the mesh Management information is stored.
- FIG. 5 and FIG. 6 are examples of area map files that store the hierarchies and sections in the map information storage device 4.
- the area map file stores all meshes including arbitrary areas in all layers.
- area map files # 0 (A) to # 5 (F) are provided corresponding to arbitrary areas A to F, respectively.
- FIG. 6 shows an example of the area map file # 0 (A) shown in FIG. 5, and is composed of all meshes including the arbitrary area A of level 2, level 1 and level 0 shown in FIG.
- area map file # 0 (A) includes level 2 meshes (0,0) and (0,1), level 1 meshes (0,0), (0,1), (0,2), (1, 0) and (1, 1) and level 0 meshes (0, 0), (0, 1), (0, 2), (0, 3), (0, 4), (1 , 0), (1,1), (1,2), (1,3), (1,4), (2,0), (2,1), (2,2), (2,3 ), (3, 1), (3, 2) and (3, 3) mesh information.
- a file name including a character string for specifying an arbitrary area corresponding to the area map file and information indicating a version of a creation range of the arbitrary area is set.
- the file name of the area map file # 0 (A) has the version of the creation range Ver. 1 is created as “A001.MAP”, the creation range changes, and the version of the creation range is Ver. When it becomes 2, it is created as “A002.MAP”.
- the version of the creation range can be managed by assigning the version of the creation range as a method of changing the file name.
- FIG. 7 shows an example of mesh information included in the area map file shown in FIG.
- Mesh information includes road data used for map matching or road display, background data for displaying map backgrounds such as rivers or seas, name data for displaying names such as place names, and route guidance. It includes route guidance data, route calculation data for route calculation, search data for searching for facilities, etc., and a map data header indicating the location and data size of various data.
- FIG. 8 shows an example of mesh management information stored in the map information storage device 4 when the hierarchy and sections are configured as shown in FIG.
- the mesh management information includes a mesh management information header and a mesh management record provided corresponding to the mesh of each layer.
- the mesh management information header includes a creation management area, the number of hierarchies, a hierarchy management record provided corresponding to each hierarchy, and a mesh management record position table indicating a storage position in the mesh management information of each mesh management record.
- the creation range includes a left end longitude, a right end longitude, a lower end latitude, and an upper end latitude of the rectangular area.
- the hierarchy management record includes the number of meshes in the hierarchy, the width in the longitude direction of the mesh, and the width in the latitude direction of the mesh.
- the mesh management record includes the mesh hierarchy, mesh coordinates, mesh information version information (region map file version information), mesh information size (region map file size), and offset from the top of the region map file to the mesh information.
- the file name of mesh information (file name of area map file).
- the file name corresponds to “file specifying information” of the present invention
- the offset corresponds to “mesh storage position information” of the present invention.
- the mesh management records are sorted by hierarchy and mesh coordinates.
- the level 0 mesh (2, 3) since the level 0 mesh (2, 3) includes a part of each of the arbitrary areas A, B, and C, all area maps corresponding to the arbitrary areas A, B, and C are included.
- the mesh information is included in the file.
- the mesh management record of the mesh includes a mesh management record corresponding to the latest version of the mesh information stored in the arbitrary areas A, B, and C. Used.
- the version of the area map file corresponding to the arbitrary area A is Ver. 1.
- the version of the area map file corresponding to the arbitrary area B is Ver. 2.
- the version of the area map file corresponding to the arbitrary area C is Ver. 3, a value is set in the mesh management record of the level 0 mesh (2, 3) so as to refer to the mesh in the arbitrary area C, and Ver. 3 is set.
- the version of the area map file corresponding to the arbitrary area A is Ver. 1.
- the version of the area map file corresponding to the arbitrary area B is Ver. 2.
- the version of the area map file corresponding to the arbitrary area C is Ver. 2, a value is set in the mesh management record of the level 0 mesh (2, 3) so as to refer to the arbitrary region updated first in the mesh of the arbitrary region B or the arbitrary region C, and the version information As Ver. 2 is set.
- the mesh coordinates of the required mesh are determined from the creation range of the mesh management information header shown in FIG. 8, the width in the longitude direction and the width in the latitude direction of the mesh of the desired hierarchy. Easy to calculate. For example, if a required level and mesh level 0 mesh (2, 3) is obtained, the mesh management information shown in FIG. 8 is retrieved, and the mesh management level 0 and mesh coordinates (2, 3) are searched. Record # 46 (level 0- (2, 3)) is obtained, and the file name of the area map file, offset information from the head of the area map file, and the size of the mesh information set therein are used, Mesh information can be easily acquired.
- the update information is information for updating map information of all layers in an arbitrary area desired by the user out of the map information stored in the map information storage device 4, and is stored in the memory card and is updated by the user. Provided to.
- FIG. 11 shows an example of update information.
- Update information includes update mesh management information, update area map file, deletion information for deleting unnecessary area map files, and update area map file range information for quickly identifying meshes to be updated. Become.
- FIG. 12 shows an example of update mesh management information included in the update information.
- the update mesh management information includes an update mesh management information header and update mesh management records provided corresponding to the meshes in each layer.
- the update mesh management information header has the same data structure as the mesh management information shown in FIG.
- the update mesh management record differs from the mesh management record shown in FIG. 8 and includes an in-mesh management information header and an in-mesh management record.
- FIG. 13 shows an example of the update mesh management record.
- the in-mesh management information header includes a hierarchy, mesh coordinates, and the number of in-mesh management records.
- the number of in-mesh management records corresponds to the number of arbitrary areas included in the mesh.
- the in-mesh management record includes the version information of the update area map file storing the mesh information, the offset from the top of the update area map file to the mesh information for update, the size of the mesh information (file of the update area map file Size) and the file name of the update area map file in which the mesh information is stored.
- the offset corresponds to “update mesh storage position information” of the present invention
- the file name of the update area map file corresponds to “file specifying information” of the present invention.
- the mesh management records are sorted by hierarchy and mesh coordinates.
- the update area map file has the same structure as the area map file.
- the file name of the update area map file if there is no change in the creation range of the area map file, the same file name as the version number of the previous creation range is set as the file name. If the creation range is different from the previous map information version, the version number of the creation range is increased in the file name, and an update area map file is created with a different file name.
- the creation range of the area map file # 0 (A) is Ver. 1 and Ver. 2 with no change, Ver. 1 is “A001.MAP”, Ver. 2 also sets “A001.MAP”.
- the creation range of the area map file # 0 (A) is Ver. 1 and Ver. 2 and Ver.
- the file name of “1” is “A001.MAP”
- Ver. “A002.MAP” is set as the file name of the area map file 2.
- the creation range of the update area map file is the same as the creation range of the area map file stored in the map information storage device 4 by changing the file name by changing the creation area of the update area map file, the update area Although the map file is overwritten on the area map file stored in the map information storage device 4, there is no problem because the area map file stored in the map information storage device 4 is not referenced after the update.
- the area map file creation range does not change, it is not necessary to rewrite the area map file, it is only necessary to perform an overwrite copy, so it can be updated to an updated area map file by a simple operation of replacing each file. It is.
- the update region map file and the region map file stored in the map information storage device 4 are different.
- the update area map file is copied to the map information storage device 4 because it becomes the file name, both the update area map file and the area map file corresponding to one arbitrary area remain. Even if there is mesh information stored only in the area map file stored in the map information storage device 4 from before the update, the mesh information is lost due to the file name change. There is nothing.
- the creation range is changed, Ver. Corresponding to the area map file # 0 (A) is changed. 1 “A001.MAP”, Ver. 2 is “A002.MAP”, and the file name is different at the time of update. 1 “A001.MAP” and Ver.
- the two area map files “A002.MAP” 2 are stored in the map information storage device 4.
- the update area is a administrative district, even if there is a change in the shape of the administrative district due to the integration or division of administrative districts, the update process is performed without being aware of the creation range of the already stored map information. In such a case, it is only necessary to simply copy the update area map file to the map information storage device 4.
- deletion information is created. Provided as update information.
- FIG. 14 shows an example of erasure information included in the update information.
- the erasure information includes an erasure information header and an erasure information record.
- the erase information header includes the number of update area map files (number of erase information records) included in the update information, the file name of the update area map file corresponding to the number, and the erase information corresponding to the update area map file. Consists of an offset to the record.
- the erasure information record is composed of the number of erase area map files and the file names (erase area map file names) of area map files to be erased corresponding to the number of erase area map files.
- the processor 5 Since the region map file that is no longer referred to from the updated mesh management information in advance may not be certain, the processor 5 stores the region map file set in each mesh management record included in the updated mesh management information. If an area map file that is not referred to by any mesh management record is found by obtaining and comparing the file name and the file name of the area map file stored in the map information storage device 4, the area map file Is deleted.
- the area map file is deleted after seeing whether it is actually referenced, the area map that is not referenced regardless of the state of the area map file held in the map information processing apparatus 4
- the file can be reliably deleted. As a result, the data amount can be reduced.
- the search for the area map file that is no longer referred to may be performed immediately after the update, or may be performed using the idling time of the processor 5.
- FIG. 15 shows an example of update area map file range information included in the update information.
- the update area map file range information is composed of information indicating the creation area of the update area map file.
- the processor 5 searches for the update mesh management record limited to the range indicated by the update area map file range information, and uses the update mesh management record for the area instructed from the input device 1 to store the mesh management record. rewrite.
- this configuration it is possible to specify the range of the mesh included in the update area map file selected from the update mesh management information, and it is possible to prevent the determination of whether or not there is an extra update. As a result, the update process can be speeded up.
- the update area map file range information can be composed of information representing the outer shape of the mesh aggregate included in the update area map file. In this way, by specifying the mesh range included in the update area map file selected from the update mesh management information, it is possible to prevent the determination of whether or not there is an extra update.
- the update area map file range information can be constituted by information indicating a rectangle or a rectangular aggregate outline of the outline of the mesh aggregate included in the update area map file. In this way, by adding information indicating a rectangle or a plurality of rectangles as information indicating a range, and determining whether the rectangle is inside or outside, a mesh that may include an update region without determining whether there is an extra update is included. Can be identified at high speed.
- the update area map file range information includes an update area map file range information header and an update area map file range information record.
- the update area map file range information header includes the number of update area map files, the file name of each update area map file, and an offset to the update area map file range information record corresponding to the update area map file.
- the update area map file range information record is composed of the number of pieces of rectangular information and the number of pieces of rectangular range information.
- the rectangular range information includes a rectangular upper end latitude, a lower end latitude, a right end longitude, and a left end longitude.
- step ST10 When the map information processing apparatus is started and the main process is started, it is first checked whether or not an update memory card is inserted (step ST10). That is, the processor 5 checks whether or not an update memory card has been inserted into the update information acquisition device 3 based on a signal sent from the update information acquisition device 3. If it is determined in step ST10 that no update memory card is inserted, the sequence proceeds to step ST12.
- step ST11 a map update process is executed (step ST11). That is, the update information acquisition device 3 reads the update information stored in the inserted update memory card and sends it to the processor 5. The processor 5 updates the map information stored in the map information storage device 4 using the update information sent from the update information acquisition device 3.
- the map update process executed in step ST11 will be described in detail later. Thereafter, the sequence proceeds to step ST12.
- step ST12 input processing is executed. That is, the user inputs an instruction for the map information processing apparatus from the input device 1. For example, the user operates the input device 1 to input an instruction such as a map display scale, a destination, or start of route calculation.
- the input device 1 generates an instruction signal in accordance with a user operation or instruction and sends the instruction signal to the processor 5.
- the processor 5 inputs the instruction signal input from the input device 1.
- step ST13 the current position is acquired (step ST13). That is, the position detection device 2 detects the current position of the vehicle and sends it to the processor 5 as position information. The processor 5 acquires position information from the position detection device 2.
- map information is acquired (step ST14). That is, the processor 5 acquires the mesh information of the mesh in the required range of the required hierarchy determined by the instruction input in step ST12 and the position information acquired in step ST13 from the map information storage device 4. The process for acquiring the map information performed in step ST14 will be described in detail later.
- step ST15 it is checked whether or not an old version of the mesh has been read. That is, the processor 5 checks whether the old version of the mesh has been read by checking the version of the mesh in the required range of the required hierarchy acquired in step ST14. In this step ST15, when the old version of the mesh is not read, that is, when the mesh having the same version or higher as the mesh including the current position is read, the sequence proceeds to step ST18.
- Step ST15 if it is determined in step ST15 that an older version of the mesh has been read, that is, it is determined that a mesh older than the mesh including the current position is included, it is then checked whether or not a mesh older than the current position has been entered. (Step ST16). That is, it is checked whether or not the mesh in the required range of the required hierarchy acquired in step ST14 has entered a mesh of a version older than the mesh including the current position.
- step ST16 If it is determined in this step ST16 that the mesh has not entered into an older mesh than the current position, the sequence proceeds to step ST18.
- step ST17 a process for prompting acquisition of update information is executed (step ST17).
- step ST17 for example, as shown in FIG. 20A, a message for inquiring whether or not to set a point where the update information can be obtained (dealer or dealer) as a transit point is output on the display screen.
- a route to a point where update information can be obtained is searched, and the searched route is superimposed and displayed separately from the currently displayed route line.
- the process for prompting the acquisition of map information executed in step ST17 will be described in detail later. Thereafter, the sequence proceeds to step ST18.
- step ST18 map information processing is executed. That is, the processor 5 executes the map information processing determined by the instruction input in step ST12 and the position information acquired in step ST13, using the map information acquired in step ST14. Thereafter, the sequence returns to step ST10, and the above-described processing is repeated.
- the processor 5 is detected by the position detection device 2 by the above processing.
- the output device 6 displays a mesh to which the current position belongs and a mesh whose version is older than the region to which the current position belongs and calculates a route to enter a mesh whose version is older than the current position, or the current position is
- an entry is made to a mesh whose version is older than the version of the mesh to which it belongs, it can be displayed on the output device 6 so that it is possible to alert the user and notify that new map data is available.
- the processor 5 can be configured to acquire the version information of the mesh displayed on the output device 6 from the version information of each mesh stored in the mesh management information.
- the version information of each mesh included in the management information can be used in the vicinity of the boundary between the new and old meshes, so that the determination can be performed without having the boundary information in the node or link.
- Update mesh management information is acquired (step ST20). That is, the update information acquisition device 3 reads the update mesh management information of the inserted memory card and sends it to the processor 5. Thereby, the processor 5 acquires the update mesh management information.
- step ST21 an arbitrary area to be updated is selected (step ST21). That is, the user designates an arbitrary area desired to be updated from the input device 1. As a result, the processor 5 selects the designated area from the update area map file included in the update information.
- a mesh management record is acquired (step ST22). That is, the processor 5 acquires the update area map file range information corresponding to the arbitrary area that the user intends to update, and corresponds to the arbitrary area that is included in the range and is to be updated from the mesh management information. A mesh management record indicating a mesh is acquired in order.
- step ST23 an in-mesh management record is acquired (step ST23). That is, the processor 5 acquires in-mesh management information corresponding to an arbitrary area to be updated in the update mesh management record corresponding to the mesh management record acquired in step ST22. If there is no in-mesh management record corresponding to an arbitrary area, the sequence proceeds to step ST26 although illustration is omitted.
- step ST24 it is checked whether or not the update information is appropriate. That is, the processor 5 compares the version number of the mesh management record acquired in step ST22 with the version number of the in-mesh management record acquired in step ST23, and checks whether the update information is appropriate. If it is determined in step ST24 that the update information is appropriate, that is, if the version of the update information is older, the sequence proceeds to step ST26.
- step ST24 if it is determined in step ST24 that the update information is not appropriate, that is, if the version of the update information is newer, the mesh management information is updated (step ST25). That is, the processor 5 rewrites the mesh management record indicating the mesh in the mesh management information stored in the map information storage device 4 to the value held in the in-mesh management record.
- step ST26 it is checked whether or not the processing for all meshes has been completed. That is, it is checked whether or not processing has been performed for all meshes that satisfy the range information indicated by the update region map file range information. If it is determined in step ST26 that the processing for all meshes has not been completed, the sequence returns to step ST22 and the above-described processing is repeated.
- step ST26 determines whether or not the processing for all meshes has been completed. If it is determined in step ST27 that the management information has not been updated, that is, if the update process has not been performed in step ST25 for all meshes that satisfy the range information indicated by the update area map file range information, The map update process ends.
- step ST27 if it is determined in step ST27 that the mesh management information has been updated, that is, if an update process has been performed on at least one mesh management record, the update area map file is then updated. (Step ST28). That is, the update area map file selected by the user is copied to the map information storage device 4. In this case, if there is an area map file with the same name, it is overwritten and copied if there is no area map file with the same name.
- step ST29 an update end notification is made (step ST29). That is, the processor 5 notifies the user by sending a message indicating that the update has been completed to the output device 6 for display, and thereafter ends the map update process.
- the update information acquired from the memory card can be updated to the latest version by rewriting the mesh management information and the area map file of the map information storage device 4, and the map information and management information of the mesh including an arbitrary area Can be updated easily.
- a required mesh is specified (step ST30). That is, the processor 5 stores in the map information storage device 4 a mesh that exists in the required range of the required hierarchy determined by the instruction input in step ST12 of the main process and the position information acquired in step ST13. With reference to the creation range of the mesh management information header of the mesh management information, the width in the longitude direction and the width in the latitude direction of the mesh of the required hierarchy, the mesh coordinates of the required mesh are obtained.
- the required layer is level 0, and the center of the map display is mesh coordinates (2, 3).
- ⁇ X + (Wx / 16) and Y- (Wy / 16) ⁇ Y + (Wy / 16) refer to the mesh management information header creation range and hierarchy management record # 2 shown in FIG.
- a mesh management record is acquired (step ST31). That is, the processor 5 searches the mesh management information stored in the map information storage device 4, and acquires the mesh management record having the required hierarchy and the required mesh coordinates obtained in step ST30. For example, the mesh management record (level 0- (2, 3)) shown in FIG. 8 is acquired for the required hierarchy level 0 and the mesh coordinates (2, 3).
- step ST32 mesh information is acquired (step ST32). That is, the processor 5 acquires the mesh indicated by the mesh management record acquired in step ST31 from the area map file stored in the map information storage device 4.
- step ST33 it is checked whether or not the required mesh map information has been acquired. That is, the processor 5 checks whether or not the processing of step ST31 and step ST32 has been executed for all the required meshes of the required hierarchy specified in step ST30. If it is determined in step ST33 that acquisition of the required mesh map information has not ended, the sequence returns to step ST31 and the above-described processing is repeated.
- step ST33 if it is determined in step ST33 that the acquisition of the required mesh map information has been completed, it is recognized that all the mesh map information of the required meshes in the required hierarchy has been obtained, and the map information acquisition process is ended. To do. At the end time, for example, step ST31 to step ST35 are executed for each mesh of level 0 mesh coordinates (2, 3), (3, 3), (2, 4), and (3,4) to obtain a required mesh. The mesh map information of is acquired.
- the mesh information of a required mesh can be easily acquired from the map information storage device 4 by referring to the mesh management information and the area map file stored in the map information storage device 4.
- step ST41 it is checked whether or not it is the first time to enter the mesh that has just entered. That is, in step ST16 of the main process described above, when entering a mesh whose version is older than the mesh including the current position, it is checked whether or not the entry is the first time. If it is determined in step ST41 that it is not the first time to enter the mesh that has just entered, the process for prompting the acquisition of map information ends.
- step ST42 the entry is notified (step ST42). That is, in the combination of area map files in step ST16, the processor 5 uses the audio output, the screen display, or both the audio output and the screen display when the old area map file enters the mesh for the first time. , Notify the user that they will enter an older version of the mesh.
- a notification for prompting acquisition of update information is output (step ST43). That is, after notifying the entry to the old mesh in step ST42, the processor 5 performs a display prompting to obtain update information. For example, a display prompting that a place where update information can be obtained be used as a transit point is displayed.
- step ST44 it is checked whether or not an update information acquisition point is set as a transit point. That is, the processor 5 checks whether or not the update information acquisition point is selected as the waypoint by the user. If it is determined in this step ST44 that the update information obtainable point is not set as a transit point, the process for prompting the acquisition of map information ends.
- step ST44 determines whether the update information obtainable point is set as a waypoint. If it is determined in step ST44 that the update information obtainable point is set as a waypoint, then a route search considering the waypoint is performed (step ST45). That is, when a waypoint is set in step ST44, the processor 5 searches for a route so that the point is a waypoint, and ends the process of prompting map information acquisition.
- the map information processing apparatus is easy to manage when a mesh including an arbitrary area is managed by one file, and an area map file including an arbitrary area Update is possible in units. Further, since the area map file is simply replaced and management information for managing them is only rewritten, the update operation is easy.
- FIG. 2 The configuration of the map information processing apparatus according to Embodiment 2 of the present invention is the same as that of the map information processing apparatus according to Embodiment 1 shown in FIG.
- map information used in the map information processing apparatus according to the second embodiment is the same as the map information used in the map information processing apparatus according to the first embodiment.
- FIG. 21 shows an example of update information used in the map information processing apparatus according to the second embodiment.
- This update information is obtained by deleting the update area map file range information from the update information (see FIG. 11) used in the map information processing apparatus according to the first embodiment, and updating the mesh management information for each update area map file. It is intended to be provided.
- the update mesh management record of the update mesh management information has the same structure as the mesh management record stored in the map information storage device 4, and only the mesh stored in the corresponding area map file is managed. .
- FIG. 22 is a flowchart showing details of a map update process executed by the map information processing apparatus according to the second embodiment.
- step ST50 an arbitrary area to be updated is selected (step ST50). That is, the update information acquisition device 3 selects an arbitrary area desired by the user from the update mesh management information included in the update information of the inserted memory card.
- update mesh management information is acquired (step ST51). That is, the update mesh management information desired by the user is read from the update information in step ST50.
- step ST52 an update mesh management record is acquired (step ST52). That is, the processor 5 acquires update mesh management records in order.
- step ST53 it is checked whether or not the update information is appropriate (step ST53). That is, the processor 5 compares the update mesh management record acquired in step ST51 with the version number of the mesh management record of the mesh management information corresponding to the update mesh management record, and determines whether or not the update is appropriate. Investigate. If it is determined in step ST53 that the update information is appropriate, that is, if the version of the update information is older, the sequence proceeds to step ST55.
- step ST53 if it is determined in step ST53 that the update information is appropriate, that is, if the version of the update information is newer, the mesh management information is updated (step ST54). That is, the processor 5 rewrites the mesh management record indicating the mesh in the mesh management information stored in the map information storage device 4 to the value stored in the update mesh management record acquired in step ST51. Thereafter, the sequence proceeds to step ST55.
- step ST55 it is checked whether or not the processing for all meshes has been completed. If it is determined in step ST55 that the processing for all meshes has not been completed, that is, if no determination is made regarding the update mesh management record held by the update mesh management information, the sequence proceeds to step ST52. Returning, the process described above is repeated.
- step ST55 if it is determined in step ST55 that the processing for all the meshes has been completed, that is, if the determination is completed for all the update mesh management records, it is then checked whether or not the management information has been updated (step ST55). ST56). When it is determined in step ST56 that the management information has not been updated, that is, the update process shown in step ST54 has not been performed on all meshes that satisfy the range information indicated by the update area map file range information. The map update process ends.
- step ST56 if it is determined in step ST56 that the management information has been updated, that is, if the update process shown in step ST53 is performed for at least one mesh, the update area map file is updated ( Step ST57). That is, the processor 5 copies the update area map file selected by the user to the map information storage device 4. In this case, if there is an area map file with the same name, overwriting copy is performed, and if there is no area map file with the same name, it is copied as it is.
- step ST58 an update end notification is made (step ST58). That is, the processor 5 notifies the user by sending a message to the effect that the update has been completed to the output device 6 for display, and then ends the map update process.
- the area map file is simply replaced, and the management information for managing them is only rewritten. Not only the update operation is easy, but also by providing the update mesh management information for each update area map file, it is not necessary to determine whether or not there is an update for meshes other than the update area.
- a memory card is used as a storage medium for update information.
- the present invention is not limited to a memory card, and other storage media can be used.
- the update information is configured to be read from the memory card by the memory card reader.
- the update information can be acquired from the outside using communication.
- the version information held in the update mesh management information is assigned to each mesh. However, if all the version of the area map file included in the update information are the same, the update mesh management information header is provided. It can be configured as follows.
- the meshes are all configured with the same size, but if the data size of the map information exceeds a predetermined value, it can be configured to be divided into smaller meshes.
- update information whose update target is one arbitrary area is stored in one storage medium
- update information whose update target range is a plurality of arbitrary areas can be stored in one storage medium.
- the latest version update area map file was used as update information
- the difference between the version update area map file stored in the map information storage device 4 and the latest version update area map file is used. Can be configured.
- the mesh management information is configured to be sorted in the mesh management information.
- the block set and the block defined in “Car-Car Navigation System Map Data Storage Format” JIS D 0810: 2004 are used. Can be configured to manage mesh management records hierarchically.
- update unit area mesh management records are sorted in the update mesh management information, but the blocks specified in “Car-Car Navigation System Map Data Storage Format” (JIS D 0810: 2004) It can be configured to manage mesh management records hierarchically using sets and blocks.
- the mesh information size is stored in the mesh management record and the update mesh management record, but the size stored in the mesh information is referred to, and the mesh information is stored in the mesh management record and the update mesh management record. Can be configured not to store size.
- the version information is stored in the update mesh management record. However, it is possible to provide information indicating the version for each update area and not store the version information in the update mesh management record.
- the file name is stored as information for specifying the file in the mesh management record and the mesh management record for update.
- an area identifier for identifying the file is assigned in advance to each area, and is uniquely determined from the area identifier.
- the name can be the file name of the area map file or the update area map file, and the area identifier can be stored as information for identifying the file in the mesh management record and the update mesh management record.
- the update area map file range information is a list of rectangular information outlining the outline, but it is “automobile-car navigation system map data storage format” (JIS D 0810). : 2004), rectangular information can be specified using a block set and a block defined in 2004). According to this configuration, existing resources can be used effectively.
- the mobile object is notified only once when entering the mesh that is older than the mesh to which the current position of the moving object belongs. It can be configured as follows. According to this configuration, when traveling, it may be possible to go back and forth between the area map boundaries. Since it is troublesome for the user to notify each time, it is possible to prevent the user from being unable to concentrate on traveling.
- it can be configured to notify by voice that a mesh that is older than the mesh to which the current position of the moving body belongs is entered. According to this configuration, it is possible to notify the driver safely even during traveling.
- it can be configured to notify the user by displaying on the output device that the mobile object is entering an older version of the mesh than the mesh to which the current position belongs. According to this configuration, it is possible to notify even when voice guidance is stopped.
- it can be configured to notify by voice that it enters an older version of the mesh than the mesh to which the current position of the moving body belongs and to display it on the output device. According to this configuration, the user can be notified more reliably.
- map data with an older version becomes more realistic map data by obtaining new map data even if the map data contains information different from the actual situation.
- the update area map file corresponding to the old version area map file can be obtained by communication. According to this configuration, since the latest map data can be acquired by communication with a map information processing apparatus having a communication function, it can be updated anytime in an environment where communication can be ensured.
- it can be configured to prompt the user to set a point where the update area map file is available as a relay point.
- the communication function is not provided or when it is desired to save the communication cost, it is assumed that the user goes to a dealer or a dealer who can acquire area map information.
- By prompting the user to set it is possible to save the user from having to search for a store or a dealer.
- the route to the location where the update area map file can be obtained is displayed simultaneously with the normal route display, so that it is possible to visually determine how far to make an update area map file. Can be judged.
- the present invention can be used for a car navigation device that is required to easily manage and update map information.
Abstract
Description
実施の形態1.
図1は、この発明の実施の形態1に係る地図情報処理装置の構成を示すブロック図である。この地図情報処理装置は、入力装置1、位置検出装置2、更新情報取得装置3、地図情報記憶装置4、プロセッサ5および出力装置6を備えている。
この発明の実施の形態2に係る地図情報処理装置の構成は、図1に示した実施の形態1に係る地図情報処理装置の構成と同じである。
Claims (15)
- 作成範囲がメッシュによって区画されて管理される地図情報であって、任意領域に対応して設けられた領域地図ファイルおよび前記メッシュを管理するメッシュ管理情報を含む地図情報を記憶する地図情報記憶装置と、
前記地図情報記憶装置に記憶されている地図情報を更新する更新情報を取得する更新情報取得装置と、
前記更新情報取得装置で取得された更新情報を用いて、前記地図情報記憶装置に記憶されている地図情報を領域地図ファイル毎に更新するプロセッサとを備え、
前記領域地図ファイルの各々は、自己に対応する任意領域が含まれるメッシュの地図情報であるメッシュ情報を格納し、
前記メッシュ管理情報は、メッシュに対応して設けられたメッシュ管理レコードを含み、該メッシュ管理レコードは、当該メッシュを含む領域地図ファイルを特定するファイル特定情報、領域地図ファイルのバージョン情報および領域地図ファイル内のメッシュ情報の格納位置を示すメッシュ格納位置情報を含み、
複数の領域地図ファイルに格納されるメッシュに対応するメッシュ管理レコードにおけるファイル特定情報は、最新バージョンの領域地図ファイルを特定する
地図情報処理装置。 - 指示を入力する入力装置を備え、
更新情報取得装置で取得される更新情報は、更新用メッシュ管理情報と更新用の領域地図ファイルである更新領域地図ファイルとを含み、
前記更新用メッシュ管理情報は、更新領域地図ファイルを特定するファイル特定情報、更新領域地図ファイルのバージョン情報および更新領域地図ファイル内のメッシュの格納位置を示す更新用メッシュ格納位置情報を含み、
複数の任意領域が含まれるメッシュを示す更新用メッシュ格納位置情報は、当該メッシュを格納している更新領域地図ファイルの数だけ保持され、
プロセッサは、前記入力装置から指示された領域の領域地図ファイルを更新領域地図ファイルに置き換えるとともに、該領域に含まれるメッシュのメッシュ管理レコードに含まれるファイル特定情報、バージョン情報およびメッシュ格納位置情報を、前記入力装置から指示された領域地図ファイルに対応する更新用メッシュ管理情報の該当する情報に書き換える
ことを特徴とする請求項1記載の地図情報処理装置。 - 指示を入力する入力装置を備え、
更新情報取得装置で取得される更新情報は、更新用メッシュ管理情報と更新用の領域地図ファイルである更新領域地図ファイルとを含み、
更新用メッシュ管理情報は、更新領域地図ファイル毎に設けられて、更新領域地図ファイルのバージョン情報、更新領域地図ファイル内のメッシュの格納位置を示す更新用メッシュ格納位置情報を含み、
プロセッサは、前記入力装置から指示された領域の領域地図ファイルを更新領域地図ファイルに置き換えるとともに、該領域に含まれるメッシュのメッシュ管理レコードに含まれるファイル特定情報、バージョン情報およびメッシュ格納位置情報を、前記入力装置から指示された領域地図ファイルに対応する更新用メッシュ管理情報の該当する情報に書き換える。
ことを特徴とする請求項1記載の地図情報処理装置。 - 更新情報は、領域地図ファイルに含まれるメッシュの範囲を示す更新領域地図ファイル範囲情報を含み、
プロセッサは、更新領域地図ファイル範囲情報で示された範囲に限定して更新用メッシュ管理レコードを検索し、入力装置から指示された領域の更新用メッシュ管理レコードを用いて、メッシュ管理レコードを書き換える
ことを特徴とする請求項2記載の地図情報処理装置。 - 更新領域地図ファイル範囲情報は、更新領域地図ファイルに含まれるメッシュの集合体の外形を表す情報から成る
ことを特徴とする請求項4記載の地図情報処理装置。 - 更新領域地図ファイル範囲情報は、更新領域地図ファイルに含まれるメッシュの集合体の外形を概説する矩形または矩形の集合体を示す情報から成る
ことを特徴とする請求項4記載の地図情報処理装置。 - 更新領域地図ファイル範囲情報は、所定数のメッシュをまとめたブロックまたは該ブロックと所定数のブロックをまとめたブロックセットとを用いて範囲を示す情報から成る
ことを特徴とする請求項6の地図情報処理装置。 - 更新領域地図ファイルの作成範囲が前回のバージョンから変更されない場合は、更新領域地図ファイルのファイル名として前回と同じファイル名が設定され、
プロセッサは、領域地図ファイルと更新領域地図ファイルとのファイル名が同一の場合は、地図情報記憶装置に記憶されている領域地図ファイルに更新領域地図ファイルを上書きする
ことを特徴とする請求項2項記載の地図情報処理装置。 - 更新領域地図ファイルの作成範囲が前回のバージョンから変更された場合は、更新領域地図ファイルのファイル名として前回と異なるファイル名が設定され、
プロセッサは、領域地図ファイルと更新領域地図ファイルとのファイル名が異なる場合は、更新領域地図ファイルを地図情報記憶装置に領域地図ファイルとして記憶する
ことを特徴とする請求項2記載の地図情報処理装置。 - 領域地図ファイルのファイル名は、対応する領域を表す情報と、その領域において作成範囲が変更された回数を示すバージョン情報とを含む
ことを特徴とする請求項9の地図情報処理装置。 - プロセッサは、更新により参照されなくなった領域地図ファイルを特定し、該特定した領域地図ファイルを削除する
ことを特徴とする請求項9記載の地図情報処理装置。 - プロセッサは、メッシュ管理レコードに格納されているファイル特定情報と、地図情報記憶装置に記憶されている領域地図ファイルのファイル名とを比較することにより、更新によりメッシュ管理情報から参照されなくなった領域地図ファイルを特定する
ことを特徴とする請求項11記載の地図情報処理装置。 - プロセッサは、入力装置から指示された領域が、既に作成された領域地図ファイルの作成範囲を包含する場合、更新領域地図ファイルのファイル名と、該更新領域地図ファイルの更新によってメッシュ管理情報から参照されなくなる領域地図ファイルのリストを格納した消去情報を作成し、消去情報に従って地図情報記憶装置に記憶された地図情報を削除する
ことを特徴とする請求項9記載の地図情報処理装置。 - 現在位置を検出する位置検出装置と、
地図情報を表示する出力装置とを備え、
プロセッサは、前記位置検出装置によって検出された現在位置が属するメッシュと、現在位置が属する領域よりもバージョンの古いメッシュとを前記出力装置に表示し、かつ、現在位置よりバージョンの古いメッシュへ進入する経路を計算した場合、または、現在位置が属するメッシュのバージョンより古いバージョンのメッシュへ進入した場合に、その旨を前記出力装置に表示させる
ことを特徴とする請求項1項記載の地図情報処理装置。 - プロセッサは、出力装置に表示されているメッシュのバージョン情報をメッシュ管理情報に格納されている各メッシュのバージョン情報から取得する
ことを特徴とする請求項14記載の地図情報処理装置。
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- 2009-10-21 DE DE112009005295.9T patent/DE112009005295B4/de active Active
- 2009-10-21 CN CN200980162136.XA patent/CN102597700B/zh active Active
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DE112009005295T5 (de) | 2012-12-27 |
JPWO2011048628A1 (ja) | 2013-03-07 |
DE112009005295B4 (de) | 2014-07-03 |
JP4879371B2 (ja) | 2012-02-22 |
CN102597700B (zh) | 2015-05-06 |
US20120130944A1 (en) | 2012-05-24 |
CN102597700A (zh) | 2012-07-18 |
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