WO2005088584A1 - 地図描画装置、ナビゲーション装置、地図描画方法並びに地図描画プログラム及びこの地図描画プログラムを記録した情報記録媒体 - Google Patents
地図描画装置、ナビゲーション装置、地図描画方法並びに地図描画プログラム及びこの地図描画プログラムを記録した情報記録媒体 Download PDFInfo
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- WO2005088584A1 WO2005088584A1 PCT/JP2005/004244 JP2005004244W WO2005088584A1 WO 2005088584 A1 WO2005088584 A1 WO 2005088584A1 JP 2005004244 W JP2005004244 W JP 2005004244W WO 2005088584 A1 WO2005088584 A1 WO 2005088584A1
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Classifications
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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
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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
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/28—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network with correlation of data from several navigational instruments
- G01C21/30—Map- or contour-matching
- G01C21/32—Structuring or formatting of map data
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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
- G09B29/106—Map spot or coordinate position indicators; Map reading aids using electronic means
Definitions
- Map drawing device navigation device, map drawing method, map drawing program, and information recording medium recording this map drawing program
- the present invention relates to a navigation device that searches for a route of a moving object and presents the route to a user, and particularly to a technique for drawing a map.
- a powerful navigation device records map display data to display a map of the route guidance target area, and a map that depicts the current position of the moving object and the route to the destination of the moving object. Is displayed on a display device such as a liquid crystal panel.
- Some navigation devices of this type record the data for map display on a rewritable recording medium such as a hard disk (hereinafter, referred to as "HD") and rewrite these data. Therefore, there is an apparatus having a function of updating map display data recorded in the navigation device to the latest data.
- HD hard disk
- map data composed of constituent data such as polygons, polylines, and text for generating image data corresponding to a map of all scales that can be displayed.
- this file is used to draw a map that covers the entire display target area. For example, if the navigation device guides a mobile body in all over Japan, the display area of the map also covers all over Japan. Therefore, map data for drawing a map corresponding to all scales of all over Japan is required. Will be described in one file.
- the present application has been made in view of the circumstances described above, and as an example of the problem, it is possible to partially update map display data, thereby improving the efficiency of the update operation. It is an object of the present invention to provide a map drawing device, a navigation device, a map drawing method, a map drawing program, and an information recording medium on which the map drawing program is recorded.
- a map drawing device performs a drawing process of generating map image data corresponding to a map to be displayed on a display device.
- a map drawing device that outputs the generated image data to a display device, wherein the data file is provided for each area obtained by dividing all the regions to be displayed on the map, and Map data which is used when generating the map image data and is used to draw a map of the area; and (b) for each area obtained by dividing each area, the configuration data corresponding to the area.
- First recording means for recording a map file including at least management data indicating presence / absence of the area, and area identification information for identifying each area, the map file to which the corresponding area belongs.
- a second recording means for recording a management file described in association with specific data indicating the file, and, when the area specifying information is obtained, at least the relevant file based on the management file.
- Specifying means for specifying a map file to which an area corresponding to the area specifying information belongs; and the configuration data corresponding to the area specified by the area specifying information based on the management data included in the specified map file.
- a determination means for determining whether or not the area exists, and when the determination means determines that the configuration data corresponding to the area exists, the map corresponding to the area based on the configuration data.
- Display control means for generating image data and outputting the map image data to the display means.
- the navigation device executes a drawing process for generating map image data corresponding to a map to be displayed on the display device.
- Navigation system equipped with a map drawing device for outputting generated image data to a display device A data file provided for each area obtained by dividing the entire area to be displayed on the map, wherein (a) the map file is used to generate the map image data of each area; A map file that includes at least map data that is a configuration data for drawing a map of an area, and (b) management data that indicates presence or absence of the configuration data corresponding to each of the divided areas of the area.
- a management file in which area specifying information for specifying each area is described in association with specific data indicating the map file to which the corresponding area belongs.
- the second recording means and when the area specifying information is obtained, identifies the map file to which at least the area corresponding to the area specifying information belongs based on the management file.
- Determining means for determining, based on the management data included in the specified map file, whether or not the configuration data corresponding to the area specified by the area specifying information exists; When the determination means determines that the configuration data corresponding to the area exists, the map image data corresponding to the area is generated based on the configuration data, and the map image data is displayed. And display control means for outputting to the means.
- the map drawing method includes: (a) a data file provided for each area obtained by dividing an entire area to be displayed on a map, Map data that is used when generating the map image data of an area and is used to generate a map of the area.
- a map file including at least management data indicating presence / absence, and (b) area specifying information for specifying each area described in association with specific data indicating the map file to which the corresponding area belongs.
- the map drawing program according to claim 10 is: (a) a data file provided for each area obtained by dividing an entire area to be displayed on a map, The map data that is used when generating the map image data of each area and is used as configuration data for drawing the map of the area, and the map data corresponding to the area for each of the divided areas. (B) the area specifying information for specifying each area corresponds to the specific data indicating the map file to which the corresponding area belongs; A map drawing program for reading out the map data from a data storage medium storing a management file described in addition to the data and displaying the map on a display device.
- Determining means for determining whether or not the configuration data corresponding to the area specified by the area specifying information is present, based on the management data included in the map file, When it is determined that the configuration data exists, it functions as display control means for generating the map image data corresponding to the area based on the configuration data and outputting the map image data to the display means. It is characterized by making it.
- an information recording medium records the map drawing program according to claim 10.
- FIG. 1 is a diagram illustrating an example of a data configuration of map display data used in a map drawing apparatus according to a first embodiment.
- FIG. 2 is a conceptual diagram showing map data included in a common map file CF and a regional map file RF-k in the embodiment.
- FIG. 3 shows an example of a data configuration of a regional map management data section RFR in the embodiment.
- FIG. 4 is a diagram showing an example of a data configuration of a management frame unit CFC in the embodiment.
- FIG. 5 is a block diagram showing an example of a specific configuration of a navigation device 100 using the map drawing device according to the embodiment.
- FIG. 6 is a flowchart showing a processing content of a subroutine executed by a system control unit 115 in the embodiment.
- FIG. 7 is a diagram showing an example of a data configuration of map display data used in a map drawing device according to a second embodiment.
- FIG. 1 shows a data configuration of map display data used in the map drawing apparatus according to the present embodiment.
- a map drawing device As shown in the figure, a map drawing device according to the present embodiment
- map file in the “claims” corresponds to, for example, the regional map file RF-k
- management file corresponds to, for example, the common map file CF.
- map data data composed of the above configuration data
- the data for map display is partially updated by updating some of the files CF and RF-k.
- map data refers to data of constituent data such as polygons, polylines, and texts, and refers to data used when actually drawing a map. Means separate.
- FIG. 2 is a conceptual diagram showing map data included in the common map file CF and the regional map file RF-k according to the present embodiment.
- the files CF and RF-k include map data for drawing a plurality of hierarchical maps.
- the map data corresponding to the maps at each level correspond to maps of different scales, and the entire area on the map is X in the east-west direction and Y in the north-south direction.
- the map data for drawing the reference parcel Pij is a map data according to the present embodiment.
- the map is drawn in each parcel Pij unit.
- the “partial data” in the “claims” corresponds to, for example, map data corresponding to the reference parcel P-i-j.
- a unit called a block is formed by aXb reference parcels Pij adjacent to each other, and a unit called a block set is formed from adjacent cXd blocks. Have been.
- map data corresponding to the reference parcel P-i-j is aggregated in block units or block set units, and map data is managed in each unit.
- n 4
- the map data corresponding to the lower hierarchy tends to have a larger display target area and an increased data amount. Therefore, in the present embodiment, the map data having a plurality of layers is divided into predetermined layers, and the map data corresponding to the map having a scale smaller than the layer is stored in the common map file CF. Map data corresponding to a small scale map file by region Allocated to RF-k.
- the map data allocated to the regional map file RF-k is divided into each area obtained by dividing the displayable area based on the map data, and is also allocated to the corresponding regional map file RF-k. Have been. For example, if the area that can be displayed by the map data is all over Japan, the map data will be displayed in regions with the whole country as one unit of Hokkaido and other prefectures (for example, Tohoku, Kanto, Chubu, Kinki, etc. ), And they are allocated to each regional map file RF-k.
- Hokkaido and other prefectures for example, Tohoku, Kanto, Chubu, Kinki, etc.
- the map data included in each region-specific map file RF-k is limited to the map data corresponding to the map of the corresponding area, and the number of region-specific map files RF-k is determined by the division method. Will be determined.
- map data allocation method and area division method are arbitrary.
- a detailed background drawing is required because of the smaller scale of the seventh hierarchy, and the data amount tends to be larger. Therefore, only map data corresponding to the map of layer 7 in the above hierarchy is allocated to each regional map file RF-k, and map data corresponding to maps of other layers is allocated to the common map file CF. Just do it.
- the map drawing device working in the present embodiment can display a map of a different scale. More specifically, in the map drawing apparatus according to the present embodiment, by specifying a predetermined point on the map, a map around the point is displayed at the specified scale.
- the map display data is divided into a plurality of files as in the present embodiment, and When a configuration in which some files in the file group are updated is adopted, new files, old files, and old files are mixed in the file for map display, and data consistency between the files. May not be able to be removed.
- the regional map file RF-k contains map data only for urban areas that require detailed display. Is often provided. For this reason, a situation in which map data that did not exist in the old file RF-k and did not exist may be newly added to the file RF-k. In such a case, if the scale of the map is changed and the display is performed, the correspondence between the reference parcels Pij belonging to each layer is broken, and a map corresponding to a parcel Pij different from the reference parcel Pij that should be displayed is displayed. It can happen.
- the map of the upper hierarchy adjacent to the map allocated to the regional map file RF-k that is, the map of the lowest hierarchy of the common map file CF.
- Map data! / Map data corresponding to all standard parcels Pij Included in the regional map file RF-k! / It is configured to manage the separate map file RF-k.
- FIG. 3 is a diagram showing an example of a data configuration of the regional map management data unit RFR
- FIG. 4 is a diagram showing an example of a data configuration of the management frame unit CFC.
- the regional map management data section RFR of the regional map file RF-k is composed of a record section RFRR and a parcel management information section RFP.
- the parcel management information section RFP included in the area-specific map management data section RFR contains the map data included in the area-specific map file RF-k, that is, the map data shown in FIG. Map file
- the parcel management information for managing the map data corresponding to the map allocated to RF-k is an element.
- This parcel management information is data for managing map data in units of reference parcels Pij, and includes, for example, map data corresponding to each reference parcel Pij, that is, information for managing unit data in map data. And information such as the start address of map data corresponding to the reference parcel Pij and the data size of the map data. It should be noted that this parcel management information is provided only in association with the reference parcel P-i-j in which map data is actually provided.
- the record part RFRR has a record for managing parcel management information as an element. This record is provided on the assumption that map data corresponding to all the reference cells P-i-j exists regardless of the presence or absence of map data, and includes at least one of the following information.
- map data corresponding to the reference parcel P-i-j exists, the head address and data size of the parcel management information corresponding to the parcel P-i-j.
- map data when there is no map data, by creating a record corresponding to the reference parcel P-ij in advance, when new map data is added, the map data is added to the map data.
- the map data can be specified. Even when map data does not exist, by referring to this record, it can be specified that map data does not exist. It does not occur.
- the management frame section CFC of the common map file CF includes a header section CFCH, a block set management record section CFBS, a common map block management table CF CB, and a map block management by area. It consists of a table CFRB, a parcel management information section CFP, and power.
- the header section CFCH includes, as header information of the common map file CF, for example, (a) a map of all the map data included in the common map file CF and the regional map file RF-k. This includes data such as level management information indicating the scale, and (b) division information indicating the scale of map data assigned to the regional map file RF-k!
- the parcel management information section CFP has parcel management information for managing map data included in the common map file CF as an element.
- the parcel management information included in the parcel management data section CFP includes, for example, information such as the head address of the corresponding map data and the data size of the map data.
- corresponding map data may not exist, for example, when the entire area of the parcel P-i-j corresponds to the sea.
- data indicating that no map data exists may be described instead of the information indicating the storage location of the map data.
- the common map block management table CFCB has a common map block management record included in the common map file CF for managing map data in units of the above blocks as elements.
- this common map block management record is used as information for managing the parcel management information of all the reference parcels Pij existing in the corresponding block.
- the head of the parcel management information corresponding to each parcel Pij It contains information such as address and data size.
- the regional map block management table CFRB includes a regional map block management record for managing the map data included in the regional map file RF-k in units of the above blocks.
- This regional map block management record is associated with each of the above records included in the record section RFRR of the regional map management data section RFR. This field is provided for each record, and includes data such as the file name of the regional map file RF-k, the start address of the record, and the data size of the record.
- the region-specific map block management record is a map corresponding to all the reference parcels Pij regardless of the presence or absence of map data, similarly to the record included in the record portion RFRR of the region-specific map file RF-k. It is provided on the assumption that data exists, and regardless of which of the above (i) and (ii) is described in the corresponding record, data such as the address of the record is written. Contains.
- the regional map block management record always specifies a fixed record regardless of whether or not the regional map file RF-k is updated. It is defined exclusively by the records included in the regional map file RF-k. For this reason, even if a part of the regional map file RF-k is updated, it is possible to specify the existence of map data in the records in the file RF-k.
- the block set management record section CFBS includes a block set management record for managing the map data included in both the common map file CF and the regional map file RF-k in units of the block set. Included.
- This regional map block management record has, as elements, a common map block management record corresponding to the blocks belonging to each block set and a head address and data size of the regional map block management record.
- the map drawing device when a map is actually drawn based on map data, first, the map drawing device performs, based on the level management information included in the header CFCH, Specifies the scale of the map to be drawn. Then, a block set including the specified point on the map of the specified scale is specified, and based on the block set management record corresponding to the block set, a block management record corresponding to the block including the point is determined. Specified.
- the identified block management record is a common map block management record, that is, the map data contained in the common map file CF
- the map data in the common map file CF is extracted based on data such as addresses included in the block management record.
- map data is extracted based on the parcel management information, and image data corresponding to a map to be drawn is generated based on the configuration data included in the map data.
- the specified block management record is a regional map block management record
- the regional map file RF-k is read based on the file name included in the block management record, and Records are extracted from file RF-k.
- the map drawing apparatus of the present embodiment determines whether there is map data to be drawn based on the record, and determines whether the map data to be drawn is present. If the data does not exist, the drawing is stopped. If the map data exists, the parcel management information is read based on the address and the like included in the record. Then, the address map data specified by the parcel management information is extracted, and based on the configuration data included in the map data, the image data corresponding to the map to be drawn! Is generated.
- the navigation device 100 draws a map around the current position of the vehicle by using the above-described map display file group, and displays route guidance information indicating a route from the current position to the destination on the map. It is for displaying.
- the navigation device 100 includes a GPS.
- Data receiving unit 104 HD (hard disk) drive 105, DVD drive 106, operation unit 107, microphone 108, voice recognition unit 109, display unit 110, and buffer memory 111 , Display control unit 112, audio processing unit 113, speaker 114, system control unit 115, ROM (Read
- first recording means and “second recording means” in the claims correspond to, for example, the HD drive 105
- specifying means and “determining means” include, for example, It corresponds to the system control unit 115
- Display control means” in “Claims” corresponds to, for example, the display control unit 112 and the system control unit 115.
- GPS receiving section 101 receives a GPS radio wave transmitted by a geodetic satellite, calculates a latitude Z longitude corresponding to the current position of the vehicle based on the received GPS radio wave, and calculates the calculated latitude.
- the Z longitude is output to the IZF unit 103 as GPS data.
- the sensor unit 102 includes various sensors for detecting the traveling speed, acceleration, and azimuth of the vehicle, and outputs traveling data corresponding to the detection result to the IZF unit 103.
- IZF section 103 calculates the current position of the vehicle based on the traveling data input from sensor section 102 and the GPS data input from GPS receiving section 101, and corresponds to the calculation result.
- the vehicle position data is output to the system control unit 115.
- the VICS data receiving unit 104 receives broadcast radio waves such as FM multiplex broadcasts, extracts VICS data included in the broadcast radio waves, and outputs the extracted VICS data to the system control unit 115.
- VICS refers to a road traffic information and communication system
- VICS data refers to road traffic information such as traffic jams, accidents, and traffic restrictions.
- the HD drive 105 is composed of a rewritable HD.
- This HD includes (data a) the above-described map display file group (common map file CF and regional map file R Fk), ( ⁇ n ⁇ ) Data for point search and other data necessary for driving guidance are recorded.
- the HD drive 105 reads various HD power data based on a control signal input from the system control unit 115 and supplies the data to the system control unit 115.
- the DVD drive 106 has a storage section for detachably storing a DVD, and a drive for playing a disc mounted on the storage section.
- the DVD drive mounted on the storage section reads out various kinds of data. Is output to the data bus 116.
- the operation unit 107 includes a remote control device having various keys such as a numeric keypad and a cursor key. Output.
- the voice recognition circuit 109 has a microphone 108 The uttered voice uttered by the input user is input. The voice recognition unit 109 analyzes the input uttered voice, recognizes a user operation command, and outputs a control signal corresponding to the operation command to the system control unit 115.
- the display control unit 112 receives the map data read from the HD drive 105. Under the control of the system control unit 115, the display control unit 112 draws image data corresponding to a map on the buffer memory 111 based on the input map data, and outputs the drawn image data at a predetermined timing. From the buffer 111 and output to the display unit 110.
- the display unit 110 is, for example, a CRT (Cathode
- Any display device such as a Ray Tube), an organic EL (Electro Luminescent) panel, and a liquid crystal display panel may be used.
- the audio processing unit 113 generates an audio signal under the control of the system control unit 115, and vocalizes the generated audio signal via the speaker 114.
- the navigation device 100 that is powerful in the present embodiment notifies the user of the traveling direction of the vehicle at the next intersection, for example, or notifies the user of the traffic congestion state on the set route. Notify the user of the road closure situation.
- the system control unit 115 mainly includes a CPU (Central Processing Unit) and includes various input / output ports such as a GPS reception port, a key input port, and a display control port. To control general functions. At the time of such control, the system control unit 115 reads out a control program recorded in the ROMZRAM unit 116, executes each process, and temporarily stores the data being processed in the ROMZRAM unit 116.
- CPU Central Processing Unit
- the system control unit 115 when performing route guidance, the system control unit 115 outputs a control signal to the HD drive 105 to read out the common map file CF corresponding to the position. Then, the system control unit 115 specifies parcel management information corresponding to the reference parcel Pij including the current position of the vehicle based on the management frame unit CFC included in the common map file CF, and Read the map data corresponding to the information. As a result, the system control unit 115 outputs the read map data to the display control unit 112 so that a map corresponding to the map data is displayed on the display unit 110. The display controller 112 is controlled.
- the system control unit 115 transmits the common map file in response to the input operation.
- the CF is read by the HD drive 105, and the map data corresponding to the scale specified by the user is specified based on the common map file CF.
- the system control unit 115 outputs a control signal to the HD drive 105 to read out the specified map data and output it to the display control unit 112.
- the navigation device 100 that is active in the present embodiment specifies map data corresponding to the reference parcel Pij required for drawing, and is executed when a map is drawn based on the map data. The processing operation will be described.
- the process shown in the figure is, for example, a process executed by the system control unit 115 as a subroutine of the control program when the following events occur.
- Event B When the user performs an input operation to perform route guidance to the operation unit 107.
- Event When the user performs an input operation to change the scale of the map on the operation unit 107 3 ⁇ 45 ports o
- the system control unit 115 first specifies the current position of the vehicle on which the navigation device 100 is mounted (Step Sal). At this time, the system control unit 115 calculates the latitude and Z longitude corresponding to the current position of the vehicle based on the vehicle position data output from the IZF unit 103, and calculates the traveling direction and the traveling speed of the vehicle.
- the system control unit 115 outputs a control signal to the HD drive 105, causes the HD drive 105 to read the common map file CF (step Sa2), and outputs the reference parcel Pij corresponding to the current position of the vehicle. (Step Sa3). Specifically, the system control unit 115 determines the scale of the map to be displayed in the header section CFCH level control. The block set management record corresponding to the block set including the reference parcel Pij to be displayed is specified and extracted based on the logical information. Note that the specific processing at this time is the same as the processing in the conventional navigation device, and thus details are omitted.
- the system control unit 115 extracts a block management record stored in the block set management record based on V, address and data size (step Sa4), and extracts the extracted block. It is determined whether the management record is a common map block management record (step Sa5). At this time, the method of determining whether or not the extracted block management record is a common map block by the system control unit 115 is optional. For example, the method for determining whether the file name is described in the extracted record is optional. The determination may be made based on whether or not the answer is NO.
- step Sa6 the system control unit 115 extracts the map data based on the parcel management information thus extracted (step Sa7), executes the display process (step Sa8), and returns to the main routine.
- step Sa8 the system control unit 115 executes, for example, the following processing corresponding to each of the events A, B, and C.
- the map data is output to the display control unit 112, and the control of the display control unit 112 is executed so that the current position of the vehicle is displayed on the map corresponding to the map data.
- Event B After setting the route from the current vehicle position to the destination, the extracted map data is output to the display control unit 112, and the route guidance information corresponding to the set route corresponds to the map data.
- the control of the display control unit 112 is executed so as to be displayed on a map to be displayed.
- Event. As in the case of Event A, when the map data is output to the display control unit 112, In both cases, the control of the display control unit 112 is performed so that the current position of the vehicle is displayed on a map corresponding to the map data.
- step Sa5 if “no” is determined in step Sa5, that is, if the block management record extracted in step Sa4 is a regional map block management record, the system control unit 115 A control signal is output to the local map file RF-k corresponding to the reference parcel Pij to be displayed (step Sa9). At this time, the system control unit 115 Based on the file name included, identify the regional map file RF-k to be read.
- the system control unit 115 reads the regional map extracted in step Sa4 from the record part RFRR of the read regional map file RF-k.
- the record corresponding to the block management record is extracted (step SalO).
- the system control unit 115 determines whether or not the parcel management information corresponding to the record exists (Step Sail) o
- the system control unit 115 The presence / absence of parcel management information is determined based on the contents of (i) and (ii) described above.
- step Sail the power to extract the map data corresponding to the maps of different scales is optional, and the map corresponding to the maps of different scales is optional.
- step Sail the same processing as the processing shown in FIG. 6 may be performed again.
- Step Sail the system control unit 115 extracts parcel management information based on data such as addresses included in the extracted record (Step Sal 2) . Then, after extracting the map data based on the data such as the address included in the parcel management information and included in the parcel management information (Step Sal 3), the system control unit 115 executes a display process (Step Sa8) It returns to the main routine.
- a map may be scrolled and displayed.
- the reference parcel P-i-j to be displayed is changed, but it is optional to employ any method for such scroll display.
- the subroutine shown in FIG. 6 may be executed to extract the map data corresponding to the reference parcel P-i-j at the scroll destination.
- map data may be extracted while referring to this information. Furthermore, when extracting the map data, the map data of the reference parcel Pij adjacent to the reference parcel Pij is read in advance, and when the scroll display is performed, the display is performed using the map data. May be.
- the map drawing apparatus executes the drawing processing for generating image data corresponding to the map to be displayed on the display unit 110 such as a liquid crystal panel, and generates the generated image.
- a map drawing device that outputs data to a display device, and divides the entire area to be displayed on the map into a plurality of areas, such as Hokkaido and Tohoku, and maps the area-specific map file RF- k, and (a) map data, which is used to generate image data corresponding to the map of each area, which is also a component data such as polygons, and (b) each area is divided into a plurality of reference parcels Pij.
- the common map file CF includes a block management record and a block set management record.
- the system control section 115 specifies the regional map file RF-k to which the reference parcel Pij to be drawn belongs. Then, based on the record of the specified regional map file RF-k, the reference parcel Pij corresponding to the block management record is obtained.
- the display control unit 112 It is determined whether or not there is a force in which map data (construction data) for drawing exists, and further, if it is determined that map data corresponding to the reference parcel Pij exists, based on the map data, The display control unit 112 generates image data for displaying a map, and outputs the image data to the display unit 110.
- map data is generated and managed for each reference parcel Pij, and the display control unit 112 controls the reference parcel Pij to be drawn.
- the image data for displaying the map of the reference parcel Pij is generated based on the configuration data included in the map data corresponding to. For this reason, it is possible to facilitate the generation management of the map data.
- the management frame unit CFC includes at least level management information and block management information for specifying the reference parcel Pij based on at least a point on the map. It is configured to include data such as records. Therefore, by specifying a point on the map, a map corresponding to the reference parcel P-i-j including the point can be displayed.
- the common map file CF includes map data corresponding to a map whose scale is smaller than the map data included in the regional map file RF-k.
- the system control unit 115 stores the image data in the common map file CF.
- the configuration is such that the display control unit 112 is controlled so as to generate image data for displaying a map based on the included map data.
- the regional map file RF-k includes at least map data corresponding to maps of two or more scales and a reference parcel Pij of each scale. While the parcel management information for managing the map data corresponding to the map data is included in the common map file, the level management information and the block management record are described for each scale, and the reference parcel including the designated point is included.
- the Pij and the scale are specified by the system control unit 115, and the regional map file RF-k to which the reference parcel Pij belongs is specified.
- the data amount of the map data allocated to each region-specific map file RF-k is increased, thereby reducing the amount of data to be updated when updating the file, and reducing the labor required for the update work. It can be realized.
- a configuration is adopted in which a group of files for map display is recorded in the HD drive 105 of the navigation device 100. These files are recorded in the navigation device 100. It is not something that must be kept. For example, a part of the files included in the file group for map display is stored in a server on the network, the file is downloaded as necessary, and the downloaded file is used to search for points. May be performed. Further, for example, all the files for map display are held in a server on the network, and map data is extracted on the server in response to a request from the navigation device 100, and only the extracted map data is extracted. May be transmitted to the navigation device 100.
- the map drawing device used in the present embodiment is used for the vehicle navigation device 100 .
- a map drawing device can be applied to other devices.
- the map drawing apparatus according to the present embodiment is applied to a mobile phone, a moving pedestrian checks a map around his or her current location or guides the pedestrian to a route. It can also be applied to things.
- the navigation device 100 is provided with the DVD drive 106, and the update files CF and RF-k are recorded using the DVD drive 106.
- the system adopts a configuration to play a DVD and update the file for map display partially!
- the files CF and RF-k for updating may be downloaded from a server on the network, and may be recorded on the HD drive 105. May be separately prepared.
- the HD drive 105 is removed from the navigation device 100 and the data in the HD is updated by the dedicated device.
- the data may be updated while the HD drive 105 is connected to the navigation device 100.
- map data is divided in units of reference parcels P-i-j, and these are collectively managed in units called blocks, and further, units called block sets.
- map data is managed in parcel units, and it is not always necessary to manage in block and block set units.
- the map data corresponding to the maps of a plurality of layers is allocated to the common map file CF and the regional map file RF-k.
- a block management record for all map data that is, a common map block management record and a regional map block management record are provided in the management record section CFC of the common map file CF.
- the regional map block management record may be provided in the regional map file RF-k. In this case, it is necessary to provide a record section RFRR that has records corresponding to each regional map block management record as elements in the regional map file RF-k.
- the present embodiment has a configuration in which a group of files for map display is recorded in a map drawing device such as a navigation device, and map data corresponding to a position where a map is to be displayed is extracted.
- a recording medium on which a program that defines the operation of the processing is recorded, and a computer that reads the program, and the computer reads the program.
- the navigation device 100 holds a group of powerful files such as a common map file CF shown in FIG. 1 as data for map display, and uses the group of powerful files to display a map and route. This is for executing processing such as guidance.
- the navigation device 100 having the same configuration as that of FIG. 5 described above holds the map display file group shown in FIG. , Such as route guidance.
- FIG. 7 the same elements as those in FIG. 1 described above are denoted by the same reference numerals.
- the map data section CFM in addition to the management frame CFC, the map data section CFM, a common map network data section CFCN, and a regional map network data section CFRN.
- a configuration that uses a common map file CF2 is used.
- the common map network data section CFCN includes, as elements, common map network data for managing each road in a map of each scale drawn based on the map data included in the common map file CF2.
- This network data includes, for example, (a) road links and nodes indicating the location of each road on the map corresponding to each scale, (b) data used when performing map matching, and (c) route setting.
- (D) Includes data such as traffic conditions for each road! /
- the road link means a plurality of straight lines for approximating each road, and is used when specifying the location of each road on the map in the route setting processing and the map matching processing.
- a node means an end point on both sides of each road link. By linking each road link at this node, the location of each road on the map is approximated. Since the road link and the node are the same as those conventionally used, detailed description is omitted.
- the regional map network data section CFRN manages each road on the map drawn based on the map data included in the regional map file RF-k. Is based on regional map network data. The specific contents of the regional map network data are the same as those of the common map network data.
- the regional map network data should be originally held in each regional map file RF-k, but in the present embodiment, the common map file CF2 is configured to perform unified management. This is because, if a configuration in which each regional map file RF-k holds regional map network data is adopted, when a part of the data for map display is updated, each regional map file RF-k This is because there is a possibility that the consistency of regional map network data may not be maintained between -k.
- the common map file CF2 When a powerful configuration is adopted, if the common map file CF2 is updated at the time of data update, the regional map network data included in the common map file CF2 and the unupdated regional map file are updated. There is a possibility that the consistency with the road on the map displayed based on the map data included in RF-k may not be obtained. Specifically, the common map file CF2 includes regional map network data corresponding to roads that do not exist on the map displayed based on the map data included in the unupdated regional map file RF-k. That would be. However, even in the case where power is applied, when the route guidance is actually performed, the route guidance information is drawn in a road shape, or the force with the route guidance information is also displayed on the road.
- the system control unit 115 performs the following processing in step Sa8 of FIG. 6 described above. Execute.
- the system control unit 115 specifies the scale of the map to be displayed based on the level management information included in the header part CFCH of the common map file CF2, and determines the network data corresponding to the scale. Extract. At this time, if the map to be displayed corresponds to the map data included in the regional map, the system control unit 115 extracts the regional map network data and stores it in the common map file CF2. If it corresponds to the included map data, the common map network data is extracted. When the extraction of the network data is completed in this way, the system control unit 115 executes a map matching process based on the network data.
- the system control unit 115 sets a route from the current position of the vehicle to the destination, and then outputs the extracted map data to the display control unit 112 to correspond to the set route.
- the control of the display control unit 112 is performed so that the route guidance information to be displayed and the information indicating the current position of the vehicle are displayed on the map corresponding to the map data.
- the system control unit 115 specifies the current position of the moving object on the map, and the display control unit 112 displays the map corresponding to the reference parcel Pij and information indicating the existence of the moving object at the position on the specified map.
- the image data is generated based on the configuration data so that is displayed, and the image data is output to the display unit 110.
- the current position of the vehicle on the map is specified based on the network data included in the common map file CF2, and the current position is displayed on the map. Shown. For this reason, even when the map display data is partially updated, the current position of the vehicle on the map can be accurately specified and displayed on the map.
- the system control unit 115 includes the route from the position of the moving object on the map to the set destination in the common map file CF2. It is configured to be set based on network data to be set. For this reason, even when partial update of the data for map display is performed, it is possible to accurately set a route.
- the common map file CF2 and the common map network data and the local map network data corresponding to the map data included in the regional map file RF-k are stored in the common map file CF2.
- this data may be managed in a separate file.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US10/593,301 US20070195094A1 (en) | 2004-03-16 | 2005-03-10 | Map depiction apparatus, navigation device, map depiction method, map depiction program, and information recording medium for recording map depiction program |
EP05720515A EP1744294A4 (en) | 2004-03-16 | 2005-03-10 | CARD PLOT DEVICE, NAVIGATION DEVICE, CARD PLOT METHOD, CARD PLOT PROGRAM, AND INFORMATION RECORDING TECHNIQUE CONTAINING CARD PLOT PROGRAM |
JP2006510983A JPWO2005088584A1 (ja) | 2004-03-16 | 2005-03-10 | 地図描画装置、ナビゲーション装置、地図描画方法並びに地図描画プログラム及びこの地図描画プログラムを記録した情報記録媒体 |
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JP2004074163 | 2004-03-16 | ||
JP2004-074163 | 2004-03-16 |
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US (1) | US20070195094A1 (ja) |
EP (1) | EP1744294A4 (ja) |
JP (1) | JPWO2005088584A1 (ja) |
CN (1) | CN101002240A (ja) |
WO (1) | WO2005088584A1 (ja) |
Cited By (4)
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WO2009069241A1 (ja) * | 2007-11-27 | 2009-06-04 | Mitsubishi Electric Corporation | 地図情報処理装置および地図情報のデータ構造 |
WO2019102968A1 (ja) | 2017-11-22 | 2019-05-31 | 三菱電機株式会社 | 地図収集システム、地図サーバ装置、車載装置および地図収集方法 |
WO2019103150A1 (ja) | 2017-11-27 | 2019-05-31 | 三菱電機株式会社 | 地図整備システムおよび地図整備方法 |
WO2023079659A1 (ja) * | 2021-11-04 | 2023-05-11 | 株式会社Subaru | 地図更新機能を有する車両の走行制御支援システム、地図更新サーバ装置、および、支援サーバ装置 |
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ATE462956T1 (de) * | 2006-03-31 | 2010-04-15 | Research In Motion Ltd | Verfahren zur kontrolle von kartenversionen und vorrichtung zur aktualisierung der verwendung von über ein netzwerk gewarteten kartendatensätzen für mobile kommunikationsvorrichtungen |
US8284192B2 (en) * | 2008-11-07 | 2012-10-09 | Landworks, Inc. | Polygon dissection in a geographic information system |
KR100997875B1 (ko) * | 2009-02-02 | 2010-12-02 | 팅크웨어(주) | 구조물의 형상을 이용한 정보 제공 장치 및 그 방법 |
CN102298873B (zh) * | 2010-06-24 | 2014-03-26 | 科菱航睿空间信息技术有限公司 | 导航电子地图数据存储方法及基于该存储方法的显示方法 |
US9140792B2 (en) * | 2011-06-01 | 2015-09-22 | GM Global Technology Operations LLC | System and method for sensor based environmental model construction |
DE102011077945A1 (de) * | 2011-06-22 | 2012-12-27 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Aktualisierung einer in mehreren Generalisierungsebenen strukturierten digitalen Karte |
CN102880440B (zh) * | 2012-09-29 | 2015-06-03 | 广东威创视讯科技股份有限公司 | 拼接墙显示地图的方法与系统 |
CN103218239B (zh) * | 2013-04-09 | 2016-06-22 | 沈阳美行科技有限公司 | 一种支持导航机地图版本增量更新版本的方法 |
CN103617731B (zh) * | 2013-09-09 | 2015-11-18 | 重庆大学 | 一种利用城市浮动车辆gps数据生成道路路网矢量地图的方法 |
CN105808578A (zh) * | 2014-12-29 | 2016-07-27 | 高德软件有限公司 | 一种电子地图增量更新的方法和装置 |
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Also Published As
Publication number | Publication date |
---|---|
CN101002240A (zh) | 2007-07-18 |
EP1744294A4 (en) | 2010-04-07 |
US20070195094A1 (en) | 2007-08-23 |
EP1744294A1 (en) | 2007-01-17 |
JPWO2005088584A1 (ja) | 2008-01-31 |
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