JP4647394B2 - Information generating apparatus, method thereof, program thereof, and recording medium recording the program - Google Patents

Description

The present invention relates to an information generating apparatus that generates annotation data for displaying an intersection name , a method thereof, a program thereof, and a recording medium on which the program is recorded.

  2. Description of the Related Art Conventionally, for example, a configuration in which map data for printing is created using map data for a navigation system is known (see, for example, Patent Document 1). A configuration is also known in which a predetermined intersection is searched using intersection data relating to an intersection recorded in an information recording device (see, for example, Patent Document 2). Furthermore, the structure which distributes the map information which a base station has to a terminal device, and displays map information with a terminal device is known (for example, refer patent document 4). And the structure which displays the map information containing a roundabout based on the input of the data for a search regarding what is called a roundabout is known (for example, refer patent document 3).

  The thing of patent document 1 recognizes the positional information on the attribute information regarding the intersection contained in the map data for navigation systems. And the intersection name layer of the map data for printing is created by arrange | positioning an intersection name in the vicinity of the position which this position information shows.

  Further, the one described in Patent Document 2 includes, for example, a first road 33 in which two traveling portions 33b and 33c are formed by a central separation band 33a, and a crossing with the first road 33 and a central separation band 34a. It is assumed that there is an intersection 35 formed by the second road 34 in which the two traveling portions 34b and 34c are formed. For example, when the distance L1 between the point 35a where the traveling parts 33b and 34b intersect and the point 35b where the traveling parts 33b and 34c intersect is longer than the threshold δ, the points 35a and 35b and the traveling parts 33c and 34b are It is determined that the intersecting point 35c and the point 35d where the traveling portions 33c and 34c intersect do not belong to one intersection 35, and four intersection data are formed corresponding to each point 35a to 35d. Furthermore, when a street name is input by the user, intersection information is searched, and four target data for the intersection 35 obtained by the search are displayed. When the distance L1 is equal to or smaller than the threshold δ, it is determined that each of the points 35a to 35d belongs to one intersection 35, and one intersection data is formed without corresponding to each of the points 35a to 35d. And one object data about the intersection 35 obtained by the search of intersection information is displayed.

  Further, in the device described in Patent Document 3, when a predetermined circular intersection associated with a plurality of nodes and links is searched by name search, a map around the circular intersection is displayed. The name of the roundabout is displayed at a position outside the round portion formed by the roundabout on the map.

  Moreover, the thing of patent document 4 distributes the data regarding an enlarged intersection figure data and the data regarding an intersection from a base station, for example, when the vehicle by which a terminal device is mounted approaches an intersection. And a terminal device will display an intersection enlarged view, if a vehicle enters into an intersection enlarged view display area.

JP 2004-30882 A (pages 5 to 11) JP 2001-108471 A (page 3 right column-page 18 right column, FIG. 36, FIG. 37) JP 2004-117268 A (page 4 to page 9, FIG. 5) JP 2002-365071 (right column on page 3-right column on page 6, FIG. 4)

  By the way, for example, the first road in which the first traveling part and the second traveling part that can travel only in different directions by the central separation zone are formed, and the first road intersects the first road and is mutually separated by the central separation zone. It is assumed that there is an intersection formed by the third traveling part and the second road on which the fourth traveling part that can travel only in different directions is formed. At such an intersection, the first point where the first and third traveling parts intersect, the second point where the first and fourth traveling parts intersect, and the second and third traveling parts intersect. A third point is formed, and a fourth point where the second and fourth traveling portions intersect is formed. However, in the configuration as in Patent Document 1, for example, when the first, second, third, and fourth points have the same name, there is a possibility that four same names may be arranged near the intersection. The problem is an example. In the configuration as in Patent Document 2, for example, the first, second, third, and fourth points belong to one intersection and, for example, the distance between the first point and the second point is larger than the threshold value. In this case, it is determined that each point does not belong to one intersection, data on four intersections is formed, and there is a problem that four same names may be displayed on the map.

  Furthermore, in the configuration as in Patent Document 3, the names of the roundabouts associated with a plurality of nodes and links are displayed at positions outside the rounded portion on the map. One problem is that there is a possibility that the user cannot be specified. Further, in the configuration as in Patent Document 4, it is conceivable that the map information producer generally sets the location of the intersection name in the enlarged intersection view. For this reason, the problem that the operation | work which sets the arrangement position of the name of this intersection may be troublesome is mentioned as an example.

An object of the present invention is to provide an information generating apparatus, a method thereof, a program thereof, and a recording medium on which the program is recorded, which appropriately generates annotation data for displaying an intersection name .

The invention according to claim 1 is an information generation device for generating annotation data for displaying an intersection name, and the links represented as road data are arranged at the start and end points of the link and the road Link information having start point node specifying information and end point node specifying information for specifying a node represented as point data of the node is associated, and the link connecting the node and the other node is specified to the node Node information capable of recording the specific information and the position coordinates of the node as well as the intersection name can be associated, storage means for storing the link information and the node information, and association from the storage means to a predetermined node. The node information is acquired, and it is determined that the intersection name is recorded in the node information. Obtaining the link information associated with the link specified by the linked link specification information recorded in the node information, and based on the start point node specification information and the end point node specification information included in the link information Determination means for determining whether or not the same intersection name is recorded in the node information associated with the nodes arranged at the start point and end point of the link, and the same intersection name in the determination means Is recorded, the plurality of node information is associated with each other based on the plurality of position coordinates recorded in the plurality of node information in which the same intersection name is recorded. The coordinates of a predetermined position among the positions of a plurality of the nodes that are present indicate the predetermined position in the display area of the intersection name An automatic generation point setting means for setting as a difference name automatic generation point, the intersection name recorded in the node information acquired by the determination means, and the intersection name in an area centered on the intersection name automatic generation point An annotation data generation means for generating the annotation data associated with character string shape information for displaying only one character string .
The invention according to claim 2 is an information generating device for generating annotation data for displaying an intersection name, and whether or not the link is an intra-intersection link for a link represented as road data. Link attribute information indicating link information having start point node specifying information and end point node specifying information for specifying a node that is arranged at the start point and end point of the link and represented as the point data of the road, The node is associated with node information capable of recording the link name specifying the link connecting the node and the other node and the position coordinates of the node and the node name capable of recording the intersection name. Storage means for storing node information, and the node information associated with a predetermined node from the storage means. When it is determined that the intersection name is recorded in the node information, the link information associated with the link specified by the connection link specifying information recorded in the node information is acquired, Based on the link attribute information included in the link information, determination means for determining whether or not the link is the link within the intersection, and when the determination means determines that the link is the link within the intersection, the link information Based on the plurality of the position coordinates recorded in the plurality of node information associated with the plurality of nodes specified based on the start point node specifying information and the end point node specifying information included in The coordinates of a predetermined position among the positions of the plurality of nodes associated with the node information are displayed as the intersection name display area. Automatic generation point setting means for setting as an intersection name automatic generation point indicating a predetermined position in the above, the intersection name recorded in the node information acquired by the determination means, and the intersection name automatic generation point as a center And an annotation data generation means for generating the annotation data in association with character string shape information for displaying only one intersection name in the area.

The invention according to claim 7 is an information generation method for generating note data for displaying an intersection name by a computer including a storage unit and a calculation unit, and the link is represented as road data. Is associated with link information having start point node specifying information and end point node specifying information for specifying a node arranged at the start point and end point of the link and represented as the point data of the road. And link information specifying the link connecting the other nodes and node coordinates capable of recording the intersection name and the node coordinates capable of recording the intersection name are associated, and the storage means includes the link information and the node stores the information, said computing means, said associated with a given node from the storage means Roh The link information associated with the link specified by the linked link specification information recorded in the node information is determined. Based on the start node specification information and the end node specification information acquired by the link information, the same intersection name is added to the node information associated with the nodes arranged at the start and end points of the link. If it is determined whether or not the same intersection name is recorded in the node information, the same intersection name is recorded in the plurality of node information recorded. Based on the plurality of position coordinates, the position between the positions of the plurality of nodes associated with the plurality of node information. Is set as an intersection name automatic generation point indicating a predetermined position in the display area of the intersection name, and the intersection name recorded in the acquired node information and the intersection name automatic generation point The annotation data is generated by associating the character string shape information for displaying only one intersection name in a region centered on .
The invention according to claim 8 is an information generation method for generating note data for displaying an intersection name by a computer including a storage unit and a calculation unit, wherein the link is represented as road data. , Link attribute information indicating whether or not the link is an intra-intersection link, and start point node specifying information and end point node for specifying a node arranged at the start point and end point of the link and represented as the point data of the road Link information having specific information is associated, and the node can record the link name specifying the link linking the node and another node, the position coordinates of the node, and the intersection name. Node information is associated, and the storage means stores the link information and the node information. When the means obtains the node information associated with the predetermined node from the storage means and determines that the intersection name is recorded in the node information, the connection link identification recorded in the node information is determined. The link information associated with the link specified by information is acquired, and based on the link attribute information included in the link information, it is determined whether or not the link is the intra-intersection link, and the link Is determined to be an intra-intersection link, it is recorded in a plurality of the node information associated with the plurality of nodes specified based on the start node specification information and the end node specification information included in the link information A plurality of the node information associated with the plurality of node information based on the plurality of position coordinates The coordinates of a predetermined position between the positions of the intersection name is set as an intersection name automatic generation point indicating a predetermined position in the display area of the intersection name, the intersection name recorded in the acquired node information, In the information generation method, the annotation data in which character string shape information for displaying only one intersection name is displayed in an area centered on the intersection name automatic generation point is generated.

The invention described in claim 9 is an information generation program that causes a computer including a storage unit and a calculation unit to function as the information generation apparatus according to any one of claims 1 to 6 .

A tenth aspect of the present invention is an information generation program that causes the computer to execute the information generation method according to the seventh or eighth aspect.

The invention described in claim 11 is a recording medium on which the information generation program according to claim 9 or 10 is recorded so as to be readable by the computer .

  Hereinafter, an embodiment according to the present invention will be described with reference to the drawings. In the present embodiment, a map information generation device as an information generation device of the present invention, which exemplifies a configuration for generating map information for displaying a map on a display device mounted on a moving body such as a vehicle, for example. I will explain. FIG. 1 is a block diagram showing a schematic configuration of the map information generating apparatus. FIG. 2 is a conceptual diagram schematically showing a table structure of display data constituting map information. FIG. 3 is a conceptual diagram schematically showing a table structure of matching data constituting map information. FIG. 4 is a schematic diagram showing a schematic configuration of the link information table. FIG. 5 is a schematic diagram showing a schematic configuration of the node information table. FIG. 6 is a schematic diagram showing a schematic configuration of note data. FIG. 7 to FIG. 14 are schematic diagrams showing the setting positions of automatically generated points for nodes and links representing intersections.

[Configuration of map information generator]
In FIG. 1, 100 is a map information generating device. The map information generation device 100 generates map information for displaying various information related to features such as facilities, factories, stores, and intersections as well as roads on a display device (not shown) as a map. The map information generating apparatus 100 includes an input unit 110, a display unit 120, a storage unit 130, a memory 140, a processing unit 150 as a calculation unit, and the like.

  The input unit 110 includes various operation buttons and operation knobs (not shown) that are input. The contents of the input operation of the operation buttons and operation knobs are setting items such as the setting of operation contents of the map information generating apparatus 100, for example. Specifically, various settings when generating map information, search of various information, and the like can be exemplified. Then, the input unit 110 appropriately outputs a predetermined signal to the processing unit 150 and sets it by an input operation of setting items.

  The display unit 120 is controlled by the processing unit 150 to display the image data signal from the processing unit 150 on the screen. Examples of the display unit 120 include a liquid crystal panel, an organic EL (Electro Luminescence) panel, a PDP (Plasma Display Panel), a CRT (Cathode-Ray Tube), an FED (Field Emission Display), and an electrophoretic display panel. Examples of the image data to be displayed on the display unit 120 include image data such as a map based on information on features and intersections and map information stored in the storage unit 130.

  The storage unit 130 can store, for example, map information as shown in FIGS. 2 and 3, a link information table 200 as shown in FIG. 4, a node information table 250 as shown in FIG. To remember. Examples of the storage unit 130 include a configuration including a drive and a driver that are readable and stored in a recording medium such as an HD (Hard Disk), a DVD (Digital Versatile Disc), an optical disk, and a memory card.

  Here, the map information includes, for example, display data VM which is so-called POI (Point Of Interest) data as shown in FIG. 2, matching data MM as shown in FIG. 3, symbol-related information not shown, and the like. It has.

  The display data VM includes, for example, a plurality of display mesh information VMx each having a unique number added thereto. That is, the display data VM is divided into a plurality of pieces of display mesh information VMx relating to a part of the region, and a plurality of pieces of display mesh information VMx are continuously arranged in the vertical and horizontal directions. Note that the display mesh information VMx may be further divided into a plurality of lower display mesh information VMx for a part of the area as appropriate. Each display mesh information VMx is divided into rectangular shapes with a set length of one side, that is, a length on an actual terrain shortened according to the scale of the map, and map information is displayed at predetermined corners. It has information on absolute coordinates ZP on the whole, for example, the map of the earth.

  The display mesh information VMx includes name information VMxA, road information VMxB, and background information VMxC. The name information VMxA is a table of data in which other element data in the area, for example, the name of an intersection or the name of an area, that is, a note about a feature or an intersection, etc. is arranged and displayed at a predetermined position with respect to the absolute coordinate ZP. It is structured into a structure. Here, the note is a symbol arranged around the position of the feature (hereinafter referred to as the true position), and a note representing the description, name, or content of the feature arranged at the true position or a position away from the true position. There are provided a character string, an indication point disposed around the true position, and a leader line connecting the indication point and the note character string. The name information VMxA includes note list data 160 having note data 170 that also functions as a plurality of intersection-related information, as shown in FIG.

  The note data 170 is information for displaying a note. The note data 170 includes note true position data 180, display character string data 190, and the like.

  The note true position data 180 is data for appropriately displaying a note. The true note position data 180 includes object ID (Identification) information 181, note character string information 182 as content information, note character number information 183, note type information 184, scale 1 display type information 185, and scale 2. Display type information 186, scale 3 display type information 187, scale 4 display type information 188, true position shape information 189, and the like are configured as one data structure.

  The object ID information 181 is unique information that identifies the note true position data 180. The annotation character string information 182 is information for displaying the annotation character string on the map. Specifically, the note character string information 182 represents characters such as a place name such as “MKWAKWANI”, an intersection name such as “AB town C-chome”, or a building name such as “CD hospital”. Character information is recorded.

  The annotation character number information 183 is information indicating the number of characters of the annotation character string displayed based on the annotation character string information 182. The note type information 184 is information indicating the type of note corresponding to the note true position data 180. Specifically, the note type information 184 includes information indicating the type of note, such as airports, police stations, universities, shrines, subway line names, major intersections, road numbers, city expressways, streets, and national roads. Is recorded.

  The scale 1 display type information 185 is information indicating the display type of the note when the map scale is, for example, 1 / 100,000 (hereinafter referred to as scale 1). Specifically, in the scale 1 display type information 185, information indicating that the display type is any one of the non-display type, the character display type, the symbol character display type, the drawn character display type, and the symbol display type is recorded. The Here, the non-display type is a type that does not display a note. The character display type is a type that displays only the note character string. The symbol character display type is a type for displaying a symbol and a note character string. The leader character display type is a type that displays a note character string, an instruction point, and a leader line. The symbol display type is a type that displays only symbols. The scale 2 display type information 186 is information indicating the display type of the note when the map scale is, for example, 1 / 50,000 (hereinafter referred to as scale 2). The scale 3 display type information 187 is information indicating the display type of the note when the map scale is, for example, 1 / 25,000 (hereinafter referred to as scale 3). The scale 4 display type information 188 is information indicating the display type of the note when the map scale is, for example, 1 / 1,000,000 (hereinafter referred to as scale 4).

  Here, the display types indicated by the scale 1 display type information 185, the scale 2 display type information 186, the scale 3 display type information 187, and the scale 4 display type information 188 are set corresponding to the type of the note type information 184. Yes. That is, for example, when the type of the note type information 184 is an airport, the display type is set to the symbol character display type on the scales 1, 2, 3, and 4. Further, when the type of the note type information 184 is alternating, the display type is set such that the scale 1 is a non-display type, the scale 2, the scale 3, and the scale 4 are a symbol display type. Note that the scales of the scales 1, 2, 3, and 4 are not limited to the scales described above, and other scales may be used as appropriate.

  The true position shape information 189 is information indicating the true position on the map. Specifically, in the true position shape information 189, information indicating one latitude and longitude corresponding to the true position by, for example, an X coordinate and a Y coordinate is recorded.

  The display character string data 190 is data for arranging and displaying notes at predetermined positions. The display character string data 190 includes object ID information 191, font size information 192, corresponding note character ID information 193, character string shape information 194 as content position information, and the like as one data structure. ing.

  The object ID information 191 is unique information that identifies the display character string data 190. The font size information 192 is information indicating the font size of the note character string displayed on the map. Note that when all the display types of the scales 1, 2, 3, and 4 are types that do not display the note character string, that is, the non-display type or the symbol display type, the font size information 192 is not incorporated into the display character string data 190. Also good. The corresponding note character ID information 193 is unique information of the note true position data 180 corresponding to the display character string data 190, that is, the same information as the information recorded in the object ID information 181.

  The character string shape information 194 is information indicating the position of the character region of the note character string and the position of the leader line for which the font size is set by the font size information 192. Specifically, the character string shape information 194 records information indicating the coordinates of the vertices of the character area and the leader line. That is, for example, when the character area is rectangular, the coordinates of four vertices are recorded. When the leader line is triangular, the coordinates of the three vertices are recorded. Further, the coordinates of the character area corresponding to each of the scales 1, 2, 3, and 4 in which the display type is set to one of the character display type, the symbol character display type, and the drawn character display type are recorded. That is, for example, when scale 1 is a non-display type and scales 2, 3, and 4 are character display types, the character string coordinates corresponding to scales 2, 3, and 4 are recorded in character string shape information 194. Further, the coordinates of the leader line corresponding to each of the scales 1, 2, 3, and 4 whose display type is set to the leader character display type are recorded. When the character area and the leader line are rectangular, only the coordinates of two vertices located at both ends of the diagonal line may be recorded.

  The road information VMxB is configured in a data table structure in which a road, which is road element data in the region, is arranged and displayed at a predetermined position in a positional relationship with the absolute coordinate ZP. In the background information VMxC, a mark indicating a famous place or building that is other element data, or image information that is other element data indicating the famous place or building, etc. is determined in a positional relationship with the absolute coordinate ZP. It is structured in a table structure of data arranged and displayed at positions.

  On the other hand, like the display data VM, the matching data MM is divided into a plurality of pieces of matching mesh information MMx related to, for example, a partial region to which a unique number is added, and a plurality of pieces of matching mesh information MMx are continuously formed vertically and horizontally. Has been. Note that the matching mesh information MMx may be further divided into a plurality of lower-layer matching mesh information MMx regarding a part of the region as appropriate. Each matching mesh information MMx is divided into rectangular shapes with the set length of one side, that is, the length on the actual terrain shortened according to the scale of the map, and the entire map information is divided into predetermined corners. For example, it has information on absolute coordinates ZP on a map of the earth. Note that the matching mesh information MMx may have a different data structure representing an area different from the display mesh information VMx, that is, the scale of the divided area may be different. Here, if the scales are the same, the data may be associated using information of a unique number, and if the scales are different, the data may be associated using absolute coordinates, for example. This matching data MM has a plurality of link string block information.

  As shown in FIG. 3, the link string block information is a data table structure in which a plurality of links L, which are line segments connecting nodes N constituting roads and representing points, are associated with a predetermined regularity. More specifically, the links L are associated with each other as a continuous link row that is continuous on a broken line, such as a continuous road such as a Koshu highway or an Ome highway. Each link L has a link ID with a unique number added to each link L.

  The node N corresponds to a nodal point such as an intersection, a turning point, a branching point, or a merging point of each road. The node N has a node ID that is a unique number added to each node N in the link string block information.

  As shown in FIG. 4, the link information table 200 has a table structure in which a plurality of link information 210 is recorded. The link information 210 is information associated with each link L of the link string block information described above. The link information 210 includes object ID information 211, road type information 212, link type information 213 as link attribute information, start point node ID information 214, end point node ID information 215, national highway prefectural road number information 216, Route name information 217, road shape information 218, and the like are configured as one data structure.

  The object ID information 211 is unique information that is associated with the link ID of each link L and identifies each link information 210. In the object ID information 211, the link ID of the link L is recorded, and the link L to the link information 210 is specified by the object ID information 211. Note that the object ID information 211 only needs to record information for identifying each link L, and may include, for example, the coordinates of the link L in addition to the link ID. The road type information 212 is information regarding the type of road corresponding to the link L specified by the object ID information 211. Specifically, the road type information 212 includes, for example, whether the link L is a toll road, whether it is a main road, whether it is a national road or a prefectural road, whether it is a one-way road, Flag information such as whether or not it is a tunnel is recorded. Furthermore, the section distance of link L, the information regarding a speed limit, etc. may be recorded. The link type information 213 is information regarding the type of link L specified by the object ID information 211. Specifically, in this link type information 213, for example, a so-called vertical line is separated whether or not the link L is a short link (hereinafter referred to as an intra-intersection link) L for representing the connection of the link L in the intersection. Information such as whether or not the link is a road link L and whether or not the link is a short link L dedicated to a right or left turn is recorded. Here, the intra-intersection link L functions as the same intersection node connection link of the present invention.

  The starting point node ID information 214 is information for specifying the node N arranged at the starting point of the link L specified by the object ID information 211 in the link string block information. In the start node ID information 214, for example, the node ID of the node N arranged at the start point of the link L is recorded. Note that the start point node ID information 214 may record the coordinates and address of the node N. The end node ID information 215 is information for specifying the node N arranged at the end point of the link L specified by the object ID information 211 in the link string block information. In the end node ID information 215, the same information as the start node ID information 214 is recorded.

  When the road corresponding to the link L specified by the object ID information 211 is a prefectural road or a national road, the national highway prefectural road number information 216 is a number such as “1” or “14”. It is information represented by. The route name information 217 is information indicating a name such as “Ome Kaido”, for example, when a unique name is given to the road corresponding to the link L specified by the object ID information 211. The road shape information 218 is information regarding the shape of the road corresponding to the link L specified by the object ID information 211. Specifically, the road shape information 218 records information such as road width, number of lanes, whether or not the vehicle has a median, and whether or not it has a sidewalk.

  As shown in FIG. 5, the node information table 250 has a table structure in which a plurality of node information 260 are recorded. The node information 260 is information associated with each node N in the link string block information. This node information 260 includes object ID information 261, connection link information 262 as link information specifying information, node coordinate information 263 as coordinate information, branch flag information 264, intersection name information 265, and intersection related information 266. And unique point information 267, and the like are associated with each other.

  The object ID information 261 is unique information that is associated with the node IDs of the nodes N located at both ends of the link L and identifies each node information 260. For example, a node ID is recorded in the object ID information 261, and the link L to the node information 260 is specified by the object ID information 261. Note that the object ID information 261 may record information related to the coordinates of the node N that identifies the node N. The connection link information 262 is information regarding the link L connected to the node N specified by the object ID information 261. In this connection link information 262, for example, the link ID of the link L connected to the node N is recorded.

  The node coordinate information 263 is information regarding the position of the node N specified by the object ID information 261. In the node coordinate information 263, for example, information indicating the latitude and longitude of the node N on the map information by, for example, the X coordinate and the Y coordinate is recorded. In addition, the address of the node N etc. may be recorded besides the information regarding these position coordinates. The branch flag information 264 is flag information indicating whether or not the node N specified by the object ID information 261 is an intersection. In the branch flag information 264, for example, “0” is recorded when the node N simply indicates a point, and “1” is recorded when the node N is an intersection. Note that the branch flag information 264 may not be provided, and in this case, the connection link information 262 may be determined to be an intersection when connected to two or more links L.

  The intersection name information 265 is information indicating the name of an intersection recorded when, for example, the branch flag information 264 of the node N is recorded as “1” and the node N is an intersection. The intersection related information 266 is detailed information of the intersection recorded when the node N is an intersection. In this intersection-related information 266, for example, information on the right / left turn of the intersection of the node N, information on the presence / absence of a right turn lane or a left turn lane, information on the presence / absence of a signal, and the like are recorded. In addition, it is good also as a structure which records the information regarding the name of an intersection in the intersection relevant information 266, and does not incorporate the intersection name information 265 in the node information 260. The unique point information 267 is information regarding the name of the node N specified by the object ID information 261. In the unique point information 267, for example, the name of the point, the name of the building serving as a landmark, the name of the intersection, and the like are recorded.

  The symbol related information is information regarding the symbol. The symbol related information includes symbol information, symbol type information, symbol shape size information, and the like as one data structure. Note that the symbol-related information may have a data structure that does not include the symbol information.

  The symbol information is symbol information for displaying a symbol. The symbol type information is information indicating the type of the feature indicated by the symbol information. Specifically, information similar to the note type information 184 of the note true position data 180 is recorded in the symbol type information. The symbol shape size information is information indicating a shape size when displaying a symbol. Specifically, in this symbol shape size information, for example, the symbol shape size using a point which is a unit generally indicating the size of a type is recorded.

  The memory 140 stores setting items input and operated by the input unit 110 so that they can be read as appropriate. Further, the memory 140 stores various programs developed on an OS (Operating System) that controls the operation of the entire map information generating apparatus 100. As the memory 140, it is desirable to use, for example, a memory (eg, a complementary metal-oxide semiconductor (CMOS) memory) having a configuration that retains memory even when the power is suddenly turned off due to a power failure or the like. Note that the memory 140 may be configured to include a drive, a driver, and the like that are readable and stored in a recording medium such as an HD, a DVD, or an optical disk.

  The processing unit 150 is connected to various input / output ports (not shown) such as a key input port to which the input unit 110 is connected, a display control port to which the display unit 120 is connected, a storage port to which the storage unit 130 is connected, and a memory 140. Memory port. Then, as shown in FIG. 1, the processing unit 150 includes, as various programs, an identical intersection node recognition unit 151 as an identical intersection node determination unit, an automatically generated point storage processing unit 152 as a content position setting unit, and content information. An annotation data generation unit 153 as an intersection related information generation unit that also functions as an acquisition unit, and the like.

  The same intersection node recognition unit 151 determines whether or not each node N connected to the intra-intersection link L belongs to the same intersection. Specifically, the same intersection node recognition unit 151 acquires node information 260 regarding a predetermined node (hereinafter referred to as a target node) N as target node information 260. Then, it is recognized that the node ID of the object ID information 261 of the target node information 260 is not stored in the memory 140, that is, the target node N is a node N that has not been checked for automatically generated points, which will be described later. Then, it is determined whether or not the intersection name is recorded in the intersection name information 265 of the target node information 260. When the intersection name is recorded, the link L to which the target node N is connected is specified based on the connection link information 262 of the target node information 260. Further, the link information 210 of the specified link L is acquired, and based on the link type information 213 of the link information 210, it is determined whether or not the link L is the intra-intersection link L. When the link L connected to the target node N is not the intra-intersection link L, that is, when the target node N is not connected to the intra-intersection link L, the target node N is configured by only the target node N. Judge that it has been. Further, the node coordinate information 263 regarding the target node N is stored in the memory 140.

  Further, when the link L connected to the target node N is the intra-intersection link L, the same intersection node recognition unit 151 uses the intra-intersection link based on the start node ID information 214 and the end node ID information 215 of the link information 210. A node (hereinafter referred to as a connection destination node) N connected to the opposite side of the target node N in L is specified. When it is recognized that no intersection name is recorded in the intersection name information 265 of the node information 260 or that the same intersection name as the target node N is recorded, the target node N and the connection destination node N are the same. Judge as belonging to the intersection. Further, when the connection destination node N has the same intersection name as that of the target node N, the connection destination node N is identified as the node N on which the automatic generation point check has been performed. Information, for example, the node ID of the object ID information 261 is stored in the memory 140. Then, the node coordinate information 263 corresponding to the target node N and the connection destination node N is stored in the memory 140.

  Here, the configuration in which the object ID information 261 of the node N for which the automatically generated point is checked is stored in the memory 140 is illustrated, but the configuration is not limited thereto, and the configuration in which the coordinates of the node coordinate information 263 are stored in the memory 140 is illustrated. It is good. Moreover, it is good also as a structure which incorporates the flag information which shows whether the check of the automatically generated point was implemented in each node information 260, and changes the setting state of this flag information.

  Further, when the same intersection node recognition unit 151 recognizes that the connection destination node N is connected to an intra-intersection link L (hereinafter referred to as another intra-intersection link) L different from the intra-intersection link L recognized previously. Then, it is determined whether or not the node N connected to the other connected link L in the intersection is the target node N. If it is determined that the node is the target node N, it is recognized that all nodes N of the intersection to which the target node N belongs belong to the same intersection, and the determination process is terminated. The signal is output to the automatic generation point storage processing means 152.

  When the same intersection node recognition unit 151 determines that the node N connected to another intra-intersection link L is not the target node N, the node N recognizes this node N as the connection destination node N, and this connection destination node It is determined whether N belongs to the same intersection as the target node N. If it is determined that they belong to the same intersection, the node coordinate information 263 of the connection destination node N is stored in the memory 140. Furthermore, the above-described processing is performed until it is determined that the node N connected to another intra-intersection link L is the target node N, and the node coordinate information 263 of the connection destination node N is appropriately stored in the memory 140, A determination processing end signal is appropriately output to the automatically generated point storage processing means 152.

  When the automatically generated point storage processing unit 152 recognizes that the node coordinate information 263 of the target node N and the connection destination node N is stored in the memory 140 by the same intersection node recognition unit 151, the node coordinate information 263 is stored. In addition, the coordinates of the intermediate point of each node N are set as an automatically generated point that is a point for displaying the intersection name of the intersection to which the target node N belongs. Then, the automatic generation point is stored in the memory 140, that is, stored as an intersection name automatic generation point An (n is a natural number) which is a final point corresponding to the center of the character area of the intersection name. Specifically, when the automatically generated point saving processing means 152 recognizes that only the node coordinate information 263 of the target node N is stored, it recognizes the coordinates of the target node N based on the node coordinate information 263, The point of the target node N is set as an automatic generation point. Further, this automatic generation point is stored as an intersection name automatic generation point An. For example, as illustrated in FIG. 7, when the links L101, L102, L103, and L104 connected to the target node N11 are not all intersection links L, only the node coordinate information 263 of the target node N11 is stored. The automatic generation point corresponding to the point N11 is stored as the intersection name automatic generation point A1.

  Here, a link L indicated by a straight line, for example, a link L101, indicates that the vehicle is a road link L that is not separated into vertical lines. Further, for example, a link L indicated by a substantially straight line including an arrow like a link L301 described later is a road link L where the vehicle is separated into vertical lines and can travel only in the direction indicated by the arrow. Show.

  Further, when the automatically generated point saving processing means 152 recognizes that the node coordinate information 263 of the target node N and the connection destination node N is stored, the automatic generation of the intersection to which the target node N belongs is set to the coordinates of the intermediate point of each node N. Set as an origin point. For example, the X coordinate and Y coordinate having the largest value among the coordinates of the target node N and the connection destination node N and the X coordinate and Y coordinate having the smallest value are recognized. Based on these recognized coordinates, a point corresponding to the middle between the X-axis direction and the Y-axis direction is set as an automatically generated point. That is, the value obtained by dividing the difference between the largest X coordinate and the smallest X coordinate by 2 is set as the X coordinate of the automatically generated point, and the difference between the largest Y coordinate and the smallest Y coordinate is divided by 2. The obtained value is set as the Y coordinate of the automatically generated point. Further, when it is recognized that the node coordinate information 263 of the new connection destination node N is stored, the coordinates of the intermediate point of each node N at which the node coordinate information 263 is stored are automatically generated by the above-described processing. Reset as a point. When the determination process end signal is acquired from the same intersection node recognition unit 151, the automatically generated point set at that time is stored as the intersection name automatic generation point An.

  That is, as shown in FIG. 8, the automatically generated point storage processing means 152, when there are a target node N21 and a connection destination node N22 belonging to the same intersection, an intra-intersection link L201 connecting these, etc. An intermediate point between the nodes N21 and N22 is stored as an intersection name automatic generation point A2. Further, when there are a target node N31 and connection destination nodes N32 and N33 belonging to the same intersection, and intra-intersection links L301, L302, and L303 that connect these nodes, a substantially triangular rectangle formed by each of the nodes N31 to N33. The center vicinity points (hereinafter referred to as XY center vicinity points) in the X direction and Y direction of the region are stored as intersection name automatic generation points A3. Further, as shown in FIG. 10, when there are a target node N41 and connection destination nodes N42, N43, N44 belonging to the same intersection, intra-intersection links L401, L402, L403, L404 connecting these, etc. The point near the XY center of the substantially square area formed by the nodes N41 to N44 is stored as the intersection name automatic generation point A4.

  Furthermore, as shown in FIG. 11, when there are a target node N51 and connection destination nodes N52 and N53 belonging to the same intersection, and intra-intersection links L501 and L502 that connect them, the nodes N51 to N53 The point near the XY center of the substantially triangular area to be formed is stored as the intersection name automatic generation point A5. Further, as shown in FIG. 12, there are a target node N61 and connection destination nodes N62, N63, N64, N65 that belong to the same intersection, intra-intersection links L601, L602, L603, and L604 that connect them. In this case, the point near the XY center of the substantially trapezoidal area formed by the nodes N61 to N65 is stored as the intersection name automatic generation point A6. As shown in FIG. 13, the target node N71 and the connection destination nodes N72, N73, N74, and N75 belonging to the same intersection, intra-intersection links L701, L702, L703, L704, and L705 that connect them are included. When it exists, the XY center vicinity point of the substantially pentagonal area | region which each node N71-N75 forms is preserve | saved as intersection name automatic generation | occurrence | production point A7. Further, as shown in FIG. 14, the target node N81 and the connection destination nodes N82, N83, N84, N85, and N86 that belong to the same intersection, and the intra-intersection links L801, L802, L803, L804, N805, and N806 that connect them. , N807, and the like, the XY center vicinity point of the substantially rectangular area formed by each node N81, N82, N85, N86 is stored as the intersection name automatic generation point A8.

  The annotation data generation unit 153 generates the annotation data 170 by reflecting the setting state of the intersection name automatic generation point An of the annotation character string related to the intersection name. Specifically, when the annotation data generation unit 153 recognizes a setting input for generating the annotation data 170 related to the annotation of the intersection in a predetermined region, that is, a predetermined mesh, the same intersection node recognition unit 151 and the automatically generated point storage process The operation of the means 152 is controlled, and the intersection name automatic generation point An corresponding to the predetermined intersection in the predetermined mesh is stored in the memory 140. The intersection name of the intersection where the intersection name automatic generation point An is stored is recognized, and the note character string information 182 and the note character number information 183 are generated. Further, for example, true position shape information 189 in which the coordinates of a predetermined node N belonging to this intersection is recorded is generated. For example, scale 1 display type information 185, scale 2 display type information 186, scale 3 display type information 187, and scale 4 display type information 188 are generated based on preset conditions. Then, the true note position data 180 incorporating these various pieces of generated information and arbitrarily set object ID information 181 is generated.

  Furthermore, the annotation data generation means 153 generates font size information 192 and corresponding annotation character ID information 193 based on, for example, preset conditions. Further, based on the note character string information 182 and the font size information 192, the size of the character area of the note character string of the intersection name is recognized, and the intersection name automatic generation point An is located at the center of the character area. For example, the coordinates of each vertex of the character area when the note character string is arranged in are calculated. Furthermore, the character string shape information 194 recorded by associating the recognized coordinates with the information regarding the scale when the intersection name is displayed is generated. Then, display character string data 190 incorporating the generated various information and arbitrarily set object ID information 191 is generated. Further, the note data generating means 153 generates note data 170 incorporating the generated note true position data 180 and display character string data 190 and stores them in the storage means 130.

[Operation of map information generator]
Next, as an operation of the map information generating apparatus 100, an intersection name automatic generation point saving process will be described with reference to FIG. FIG. 15 is a flowchart showing a process for storing intersection name automatic generation points.

  First, when the processing unit 150 of the map information generating apparatus 100 recognizes a setting input for generating the annotation data 170 of an intersection in a predetermined mesh by the setting input of the input unit 110 by the annotation data generation unit 153, for example, The mesh specifying information for specifying the mesh is output to the same intersection node recognition unit 151. And the same intersection node recognition means 151 will acquire the node information 260 regarding all the nodes N of the mesh specified by this mesh specific information, as shown in FIG. 15, if mesh specific information is acquired (step S101). Then, for example, it is determined whether or not all the acquired node information 260 has been examined to have an intersection name (step S102). In this step S102, when it is determined that, for example, it is checked whether or not all node information 260 has an intersection name, the intersection name automatic generation point saving process is terminated. Then, the annotation data generation unit 153 reflects the intersection name automatic generation point An stored by the automatic generation point storage processing unit 152 to generate the annotation data 170 and stores it in the storage unit 130.

  On the other hand, if it is determined in step S102 that the same intersection node recognition unit 151 has not checked whether all the node information 260 has, for example, an intersection name, the single node information 260 is converted into the target node information 260. (Step S103), and based on the target node information 260, it is determined whether or not the automatic generation point check of the target node N is not performed (step S104). If it is determined in step S104 that the automatically generated points are checked, the process of step S102 is performed. On the other hand, if it is determined in step S104 that the automatic generation point check of the target node N has not been performed, it is determined whether or not the target node N has an intersection name (step S105).

  In step S105, when it is determined that the intersection name is not included, the process of step S102 is performed. On the other hand, when it is determined in step S105 that the target node N has an intersection name, it is determined whether or not the target node N is connected to the intra-intersection link L (step S106). If it is determined in step S106 that the target node N is not connected to the intra-intersection link L, the automatic generation point storage processing unit 152 sets the point of the target node N as an automatic generation point (step S107). ). Thereafter, the automatically generated point storage processing unit 152 stores the automatically generated point as the intersection name automatic generated point An (step S108), and performs the process of step S102.

  If it is determined in step S106 that the target node N is connected to the intra-intersection link L, whether or not the connection destination node N of the intra-intersection link L has the same intersection name as the target node N is determined. Judgment is made (step S109). If it is determined in this step S109 that the connection destination node N has the same intersection name as that of the target node N, the connection destination node N is recognized as the node N on which the automatic generation point check has been performed, and connected. Information for specifying the destination node N is stored in the memory 140. Thereafter, the automatically generated point storage processing means 152 sets an intermediate point between the target node N and the connection destination node N belonging to the same intersection as an automatically generated point (step S110). Then, the same intersection node recognition unit 151 determines whether or not the connection destination node N is connected to another intra-intersection link L (step S111).

  If it is determined in step S111 that the link is not connected to another intra-intersection link L, the automatic generation point storage processing unit 152 determines whether or not an automatic generation point setting process is being performed (step S112). ). When it is determined in step S112 that the automatic generation point setting process is being performed, the process of saving the automatic generation point as the intersection name automatic generation point An, that is, the process of step S108 is performed. On the other hand, if it is determined in step S112 that the automatic generation point setting process has not been performed, the process of step S107 is performed.

  In step S109, if the same intersection node recognition unit 151 determines that the connection destination node N does not have the same intersection name as that of the target node N, does the connection destination node N have no intersection name? It is determined whether or not (step S113). If it is determined in step S113 that the connection destination node N does not have an intersection name, the connection destination node N is recognized as belonging to the same intersection as the target node N, and the process of step S110 is performed. On the other hand, if it is determined in step S113 that the connection destination node N has an intersection name, the connection destination node N has an intersection name different from that of the target node N, and the intersection is different from the target node N. Recognize that it belongs. Then, the process of step S111 is performed without performing the process of setting automatically generated points corresponding to the connection destination node N.

  Furthermore, when it is determined in step S111 that the connection destination node N is connected to another intra-intersection link L, it is determined whether or not the connection destination node N of the other intra-intersection link L is the target node N ( Step S114). If it is determined in step S114 that the node is the target node N, it is recognized that all nodes N of the intersection to which the target node N belongs have been subjected to the determination process whether or not they belong to the same intersection. The process of S112 is performed. On the other hand, if it is determined in step S114 that the connection destination node N of the other intra-intersection link L is not the target node N, whether or not all nodes N of the intersection to which the target node N belongs belong to the same intersection. It is recognized that the determination process is not performed, and the process of step S109 is performed.

[Operational effect of map information generator]
As described above, in the above embodiment, the processing unit 150 of the map information generating apparatus 100 recognizes a plurality of nodes N belonging to one intersection by the same intersection node recognition unit 151. Further, the processing unit 150 uses the automatically generated point storage processing unit 152 to determine a predetermined position between the display positions of the points corresponding to the plurality of nodes N recognized as belonging to one intersection as the intersection name. The intersection name automatic generation point An corresponding to the center of the character area is set and stored. Then, the processing unit 150 causes the annotation data generation unit 153 to generate annotation data 170 for displaying the intersection name in the character area centered on the intersection name automatic generation point An. For this reason, the map information generation device 100 displays only one same intersection name without displaying a plurality of the same intersection names even when the points corresponding to the plurality of nodes N have the same intersection name, for example. Annotation data 170 can be generated. In addition, since the annotation data 170 for displaying the intersection name between the points corresponding to the plurality of nodes N associated with the roundabout is generated, the conventional configuration for displaying the name outside the round portion of the roundabout In comparison, the user can easily recognize the roundabout whose name is displayed. Furthermore, the annotation data 170 for displaying the intersection name at an appropriate position can be generated without causing the creator of the annotation list data 160 to perform troublesome setting input for setting the arrangement position of the annotation character string of the intersection name. Also, compared to the case where different creators set and input the character string of the intersection name in the node information table 250 and the note list data 160, the different creators differ for the node information 260 and the note data 170 corresponding to one intersection. It is possible to prevent inconsistencies in setting and inputting intersection names. Furthermore, when there is no intersection, it is not necessary to check whether or not the node information 260 and the annotation data 170 reflect the state where the intersection is lost. Therefore, the map information generating apparatus 100 can appropriately generate the note data 170 in which the intersection name is displayed substantially corresponding to the position of the intersection.

  Further, the automatically generated point storage processing means 152 sets the coordinates of a predetermined position among a plurality of nodes N belonging to one intersection as the intersection name automatically generated point An based on the node coordinate information 263. Then, the annotation data generation means 153 generates annotation data 170 for displaying the intersection name in the character area centered on the intersection name automatic generation point An set by these coordinates. For this reason, for example, the map information generating apparatus 100 determines whether or not the character area having the intersection name is arranged between a plurality of nodes N belonging to one intersection while appropriately moving the character area of the intersection name in a predetermined direction. Compared to the configuration to be set, the position of the character area can be set by simple processing.

  Further, the automatically generated point storage processing means 152 obtains a value obtained by dividing the difference between the maximum X coordinate and the minimum X coordinate of a plurality of nodes N belonging to one intersection by 2, and the X coordinate of the intersection name automatic generation point An. And the value obtained by dividing the difference between the maximum Y coordinate and the minimum Y coordinate by 2 is set as the Y coordinate of the intersection name automatic generation point An. For this reason, the map information generation device 100 can generate the annotation data 170 for appropriately displaying the intersection name at the approximate center of the area formed by each node N. For example, the corner in the Y direction of the area formed by each node N Compared with the configuration displayed in the vicinity, it is possible to generate the note data 170 that allows the user to better recognize that the intersection name displayed to the user is assigned to each node N. Further, compared to the configuration in which the barycentric position of the area formed by each node N is set as the intersection name automatic generation point An, the setting process of the intersection name automatic generation point An can be facilitated and the processing load can be reduced.

  When the same intersection node recognition unit 151 recognizes that the same intersection name is recorded in the intersection name information 265 of the target node N and the connection destination node N, the target node N and the connection destination node N have the same intersection. Judged to belong to. For this reason, the map information generation apparatus 100 can recognize a plurality of nodes N belonging to the same intersection by a simple process of simply recognizing whether or not the same intersection name is recorded in the intersection name information 265.

  When the same intersection node recognition unit 151 recognizes that the target node N is connected to the connection destination node N via the intra-intersection link L based on the connection link information 262 of the target node N, for example, the target node N It is determined that the connection destination node N belongs to the same intersection. For this reason, the map information generation device 100 is a simple process of simply recognizing whether the target node N is connected to the connection destination node N via the intra-intersection link L, for example. Node N can be recognized. Even if no intersection name is recorded in the intersection name information 265 of the connection destination node N, the connection destination node N belongs to the same intersection as the target node N connected through the intra-intersection link L. I can judge. Therefore, the intersection names of all the nodes N belonging to one intersection, such as a configuration in which it is determined whether or not they belong to the same intersection based on whether or not the same intersection name is recorded in the intersection name information 265. It is not necessary to record the intersection name in the information 265, and the amount of information in the node information table 250 can be minimized. In addition, the work efficiency of the creator of the node information table 250 can be increased.

  Further, the same intersection node recognition unit 151 recognizes the connection destination node N having the same intersection name as that of the target node N as the node N on which the automatic generation point check has been performed, and identifies the node N on which this check has been performed. Information to be stored in the memory 140. When the same intersection node recognizing means 151 recognizes that the target node N corresponding to the newly acquired target node information 260 is the node N on which the automatic occurrence point check has been performed, it is different from the target node N. Node information 260 of node N is acquired as target node information 260. For this reason, the map information generation apparatus 100 does not perform a determination process such as whether or not the node N that has been previously checked for automatically generated points has an intersection name, thereby improving processing efficiency. Can be achieved.

  Further, the map information generation apparatus 100 performs a generation process of the annotation data 170 in which the intersection name is displayed on the scales 1, 2, 3, and 4 having different scales. For this reason, the convenience of the map information generation device 100 can be improved as compared with the configuration in which only the generation processing of the annotation data 170 corresponding to only one scale is performed.

  The information generation apparatus of the present invention is applied to the map information generation apparatus 100 that generates the note data 170 displayed on the display device with the intersection name superimposed on the road. Therefore, the map information generating apparatus 100 can generate the annotation data 170 that can display the intersection name at an appropriate position on the map, and can make the user recognize the name of the predetermined intersection well.

  Furthermore, the information generation device of the present invention is applied to the map information generation device 100 that generates note data 170 in which an intersection name is displayed superimposed on a road on a display device mounted on a vehicle. For this reason, for example, even in a display device mounted on a moving body having a display area smaller than that of a display device installed at home or the like, the annotation data 170 in which the intersection name is displayed at an appropriate position can be generated, and map information generation The convenience of the device 100 can be further improved.

[Modification of Embodiment]
Note that the present invention is not limited to the above-described embodiment, and includes the following modifications as long as the object of the present invention can be achieved.

  That is, the automatically generated point storage processing unit 152 determines whether or not the character area of the intersection name is arranged between a plurality of nodes N belonging to one intersection while appropriately moving the character area of the intersection name in a predetermined direction, for example. It is good also as a structure which sets a position. Even with such a configuration, the map information generating apparatus 100 can appropriately generate the annotation data 170 in which the intersection name is displayed substantially corresponding to the position of the intersection.

  Then, the automatic generation point storage processing unit 152 may set a predetermined position in the area formed by each node N, for example, a position near the corner in the Y direction and the position of the center of gravity as the intersection name automatic generation point An. . Even with such a configuration, the map information generating apparatus 100 can appropriately generate the note data 170 for displaying the intersection name in a state substantially corresponding to the position of the intersection.

  Further, the same intersection node recognition unit 151 may be configured not to have a function of determining whether or not each node N belongs to the same intersection based on the intersection name recorded in the intersection name information 265. With this configuration, the configuration of the same intersection node recognition unit 151 can be simplified. And the process of step S109, S113 can be abbreviate | omitted and the processing load of the same intersection node recognition means 151 can be reduced.

  Further, the same intersection node recognition unit 151 is not provided with a function for determining whether or not each node N belongs to the same intersection based on whether or not each node N is connected to the intra-intersection link L. Also good. With this configuration, the configuration of the same intersection node recognition unit 151 can be simplified. Furthermore, the processing of steps S106 and S111 can be omitted, and the processing load on the same intersection node recognition unit 151 can be further reduced.

  And it is good also as a structure which does not provide in the same intersection node recognition means 151 the function to judge whether the object node N corresponding to the newly acquired object node information 260 is the node N in which the check of the automatic generation | occurrence | production point was implemented. . With this configuration, the configuration of the same intersection node recognition unit 151 can be simplified. Furthermore, the process of step S104 can be omitted, and the processing load of the same intersection node recognition unit 151 can be further reduced.

  In addition, the configuration in which the automatic generation point is set every time the connection destination node N recognizes that it belongs to the same intersection as the target node N or the like is illustrated, but not limited to this, all nodes N belonging to the same intersection An automatic generation point may be set after recognition.

  Furthermore, you may apply the information generation apparatus of this invention to the structure which produces | generates the annotation data 170 by which an intersection name is displayed by one scale. Further, the present invention is not limited to the annotation data 170 in which the intersection name is displayed, but is given to, for example, the annotation data 170 in which the name of the place where the roads intersecting at the intersection are connected, or the intersection of wiring as a link constituting the circuit The present invention may be applied to any configuration that generates intersection-related information in which the contents of an intersection of a predetermined link are displayed, such as a configuration in which circuit diagram information in which a name is displayed is generated. Furthermore, the present invention may be applied to a configuration for generating the above-described information for printing a map or a circuit diagram on paper or the like. Further, the display device for displaying the map is not limited to the configuration mounted on the moving body, but can also be applied to a configuration arranged in a home or a factory. And as an information generation device of the present invention, it is good also as composition which made processing part 150 independent.

  Each function described above is constructed as a program. However, for example, it may be configured by hardware such as a circuit board or an element such as one integrated circuit (IC), and can be used in any form. By adopting a configuration that allows reading from a program or a separate recording medium, as described above, handling is easy, and usage can be easily expanded.

  In addition, the specific structure and procedure for carrying out the present invention can be changed as appropriate to other structures and the like within the scope of achieving the object of the present invention.

[Effect of the embodiment]
As described above, in the above embodiment, the processing unit 150 of the map information generation device 100 has a predetermined position between the display positions of the points corresponding to the plurality of nodes N recognized as belonging to one intersection. Is set and stored as an intersection name automatic generation point An corresponding to the center of the character area of the intersection name. Then, the processing unit 150 generates annotation data 170 for displaying the intersection name in the character area centered on the intersection name automatic generation point An. For this reason, the map information generation device 100 displays only one same intersection name without displaying a plurality of the same intersection names even when the points corresponding to the plurality of nodes N have the same intersection name, for example. Annotation data 170 can be generated. In addition, since the annotation data 170 for displaying the intersection name between the points corresponding to the plurality of nodes N associated with the roundabout is generated, the conventional configuration for displaying the name outside the round portion of the roundabout In comparison, the user can easily recognize the roundabout whose name is displayed. Furthermore, the annotation data 170 for displaying the intersection name at an appropriate position can be generated without causing the creator of the annotation list data 160 to perform troublesome setting input for setting the arrangement position of the annotation character string of the intersection name. Therefore, the map information generating apparatus 100 can appropriately generate the note data 170 in which the intersection name is displayed substantially corresponding to the position of the intersection.

It is a block diagram which shows schematic structure of the map information generation apparatus which concerns on one embodiment of this invention. It is a conceptual diagram which shows typically the table structure of the data for display which comprises the map information in the said one Embodiment. It is a conceptual diagram which shows typically the table structure of the matching data which comprises the map information in the said one Embodiment. It is a schematic diagram which shows schematic structure of the link information table in the said one Embodiment. It is a schematic diagram which shows schematic structure of the node information table in the said one Embodiment. It is a schematic diagram which shows schematic structure of the note data in the said one Embodiment. It is a schematic diagram which shows the setting position of the automatic generation | occurrence | production point with respect to the node and link showing the intersection in the said one Embodiment. It is a schematic diagram which shows the setting position of the automatic generation | occurrence | production point with respect to the node and link showing the intersection in the said one Embodiment. It is a schematic diagram which shows the setting position of the automatic generation | occurrence | production point with respect to the node and link showing the intersection in the said one Embodiment. It is a schematic diagram which shows the setting position of the automatic generation | occurrence | production point with respect to the node and link showing the intersection in the said one Embodiment. It is a schematic diagram which shows the setting position of the automatic generation | occurrence | production point with respect to the node and link showing the intersection in the said one Embodiment. It is a schematic diagram which shows the setting position of the automatic generation | occurrence | production point with respect to the node and link showing the intersection in the said one Embodiment. It is a schematic diagram which shows the setting position of the automatic generation | occurrence | production point with respect to the node and link showing the intersection in the said one Embodiment. It is a schematic diagram which shows the setting position of the automatic generation | occurrence | production point with respect to the node and link showing the intersection in the said one Embodiment. It is a flowchart which shows the preservation | save process of the intersection name automatic generation | occurrence | production point in the said one Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Map information generation apparatus as information generation apparatus 150 Processing part as calculation means 151 Same intersection node recognition means as same intersection node judgment means 152 Automatic generation point storage processing means as content position setting means 153 Also as content information acquisition means Annotation data generating means 170 as functioning intersection related information generating means 170 Annotation data functioning also as intersection related information 182 Note character string information as contents information 194 Character string shape information as contents position information 213 Link type as link attribute information Information 262 Connection link information as connection link identification information 263 Node coordinate information which is coordinate information VMxB Road information

Claims (11)

An information generation device for generating annotation data for displaying an intersection name ,
The link represented as road data is associated with link information having start point node identification information and end point node identification information for identifying a node arranged at the start point and end point of the link and represented as the road point data. And
The node is associated with node information that records the link name specifying the link connecting the node and another node and the position coordinates of the node and the intersection name can be recorded.
Storage means for storing the link information and the node information;
When the node information associated with a predetermined node is obtained from the storage means and it is determined that the intersection name is recorded in the node information, the node information is identified by the connection link identification information recorded in the node information. The link information associated with the link to be acquired is acquired and associated with the nodes arranged at the start point and end point of the link based on the start node specification information and the end node specification information included in the link information. Determining means for determining whether or not the same intersection name is recorded in the node information being recorded;
When it is determined by the determination means that the same intersection name is recorded, based on the plurality of position coordinates recorded in the plurality of node information in which the same intersection name is recorded, Automatic generation point setting for setting the coordinates of a predetermined position among the positions of the plurality of nodes associated with the plurality of node information as an intersection name automatic generation point indicating a predetermined position in the display area of the intersection name Means,
The intersection name recorded in the node information acquired by the determination means, and character string shape information for displaying only one intersection name in an area centered on the intersection name automatic generation point, Note data generating means for generating the associated note data;
An information generation device characterized by comprising: An information generation device for generating annotation data for displaying an intersection name,
For the link represented as road data, link attribute information indicating whether or not the link is an intra-intersection link, and a node represented as the road point data arranged at the start and end points of the link are specified. Link information having start point node specifying information and end point node specifying information to be associated,
The node is associated with node information that records the link name specifying the link connecting the node and another node and the position coordinates of the node and the intersection name can be recorded.
Storage means for storing the link information and the node information;
When the node information associated with a predetermined node is obtained from the storage means and it is determined that the intersection name is recorded in the node information, the node information is identified by the connection link identification information recorded in the node information. Determining means for acquiring the link information associated with the link to be determined, and determining whether the link is the intra-intersection link based on the link attribute information included in the link information;
When the determination unit determines that the link is within the intersection, the plurality of nodes associated with the plurality of nodes specified based on the start node specification information and the end node specification information included in the link information Based on a plurality of the position coordinates recorded in the information, the coordinates of a predetermined position among the positions of the plurality of nodes associated with the plurality of node information are determined in the intersection name display area. Automatic generation point setting means for setting as an intersection name automatic generation point indicating the position of,
The intersection name recorded in the node information acquired by the determination means, and character string shape information for displaying only one intersection name in an area centered on the intersection name automatic generation point, Note data generating means for generating the associated note data;
An information generation device characterized by comprising: The information generation device according to claim 1 ,
Before SL link information includes a link attribute information the link to which the link information is associated indicating whether or not said intersection in a link,
Before SL decisions means, the link is determined whether or not the intersection in the link based on the link attribute information the acquired link information has,
When the determining unit determines that the link is an intra-intersection link, the automatic generation point setting unit sets a plurality of nodes specified based on the start node specification information and the end node specification information included in the link information. Based on the plurality of position coordinates recorded in the associated node information, the coordinates of a predetermined position among the positions of the plurality of nodes associated with the plurality of node information are determined as the intersection. An information generation device, characterized in that it is set as an intersection name automatic generation point indicating a predetermined position in a name display area . An information generating device according to any one of claims 1 to 3 ,
Wherein the position coordinates recorded in the node information indicates an X coordinate and Y coordinate in position of the nodes,
The automatic generation point setting means, the X-coordinate values obtained by dividing the difference of the plurality of nodes of position has the largest value at location X coordinate and the value is the smallest X-coordinate at 2 at the center position of the display area of the intersection name And a value obtained by dividing a difference between the Y coordinate having the largest value and the Y coordinate having the smallest value by 2 is set as the Y coordinate at the center position of the display area. An information generating device according to any one of claims 1 to 4 ,
The annotation data is data for displaying the intersection name on a map displayed at a plurality of different scales. An information generation device according to any one of claims 1 to 5 ,
The information generating device, wherein the display device for displaying the intersection name is disposed on a moving body. An information generation method for generating annotation data for displaying an intersection name by a computer including a storage unit and a calculation unit,
The link represented as road data is associated with link information having start point node identification information and end point node identification information for identifying a node arranged at the start point and end point of the link and represented as the road point data. And
The node is associated with node information that records the link name specifying the link connecting the node and another node and the position coordinates of the node and the intersection name can be recorded.
The storage means stores the link information and the node information,
The computing means is
When the node information associated with a predetermined node is obtained from the storage means and it is determined that the intersection name is recorded in the node information, the node information is identified by the connection link identification information recorded in the node information. The link information associated with the link to be acquired is acquired and associated with the nodes arranged at the start point and end point of the link based on the start node specification information and the end node specification information included in the link information. Determining whether the same intersection name is recorded in the node information being recorded,
When it is determined that the same intersection name is recorded in the node information, based on the plurality of position coordinates recorded in the plurality of node information in which the same intersection name is recorded, The coordinates of a predetermined position among the positions of the plurality of nodes associated with a plurality of the node information is set as an intersection name automatic generation point indicating a predetermined position in the display area of the intersection name,
The intersection name recorded in the acquired node information and the character string shape information for displaying only one intersection name in an area centered on the intersection name automatic generation point An information generation method characterized by generating annotation data . An information generation method for generating annotation data for displaying an intersection name by a computer including a storage unit and a calculation unit,
For the link represented as road data, link attribute information indicating whether or not the link is an intra-intersection link, and a node represented as the road point data arranged at the start and end points of the link are specified. Link information having start point node specifying information and end point node specifying information to be associated,
The node is associated with node information that records the link name specifying the link connecting the node and another node and the position coordinates of the node and the intersection name can be recorded.
The storage means stores the link information and the node information,
The computing means is
When the node information associated with a predetermined node is obtained from the storage means and it is determined that the intersection name is recorded in the node information, the node information is identified by the connection link identification information recorded in the node information. The link information associated with the link to be acquired, based on the link attribute information that the link information has, determine whether the link is the link in the intersection,
When it is determined that the link is the intra-intersection link, the plurality of pieces of node information associated with the plurality of nodes specified based on the start point node specifying information and the end point node specifying information included in the link information The coordinates of a predetermined position among the positions of the plurality of nodes associated with the plurality of node information are determined based on the plurality of position coordinates recorded in the predetermined name in the intersection name display area. Set as an intersection name automatic generation point indicating the position,
The intersection name recorded in the acquired node information and the character string shape information for displaying only one intersection name in an area centered on the intersection name automatic generation point Generate note data
An information generation method characterized by the above. An information generation program that causes a computer comprising storage means and calculation means to function as the information generation apparatus according to any one of claims 1 to 6 . An information generation program for causing the computer to execute the information generation method according to claim 7 or 8 . 11. A recording medium on which an information generation program is recorded, wherein the information generation program according to claim 9 or 10 is recorded so as to be readable by the computer .

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