JP4803014B2 - Navigation device - Google Patents

Description

  The present invention relates to a map display device that presents detailed geographical information at the same time while presenting wide-area geographic information in a navigation device.

  In a conventional navigation device, when checking the outline of geographical information over a wide range, an overview of a map displayed in a wide area at a small scale is provided, and detailed geographical information that attempts to find a place where a user wants to go is obtained. In the case of confirmation, it is designed so that the confirmation of the wide-area geography and the examination of the detailed points are performed as independent functions, such as individual examination such as listing candidate points by point search. . However, the requests for both of these functions do not necessarily occur independently of each other, and there are cases in which it is desirable to simultaneously confirm and grasp the wide-area geography and examine detailed points.

  For example, in the case of driving for sightseeing purposes, when a plan to go around a specific place in a specific order is not clearly planned in advance, and the next destination is decided while driving, a wide range It is desirable to be able to easily figure out where and what are the attractions while keeping in mind.

In this way, when a clear destination has not been decided, an example of presenting reference information for determining the destination, that is, as an example of a solution that simultaneously establishes the confirmation grasp of the wide area geography and the examination of the detailed point And “in-vehicle map display device” disclosed in Patent Document 1. According to this, information on facilities belonging to the area including the place name displayed on the map is linked, and by selecting and specifying the place name on the map, a list containing the detailed information of the linked facility is displayed. It has come to be.
Japanese Utility Model Publication No. 5-79575

  Here, in general, even if the user does not decide the destination, the genre (for example, art museum, hot spring, restaurant, etc.) that includes the destination is often decided, and if the destination can be selected within these genres, It is possible to easily set the destination.

  However, in the technique described in Patent Document 1, facility information related to place names is only displayed in a list format, and the facility information is not classified for each genre. There is also a problem that facility information is also displayed at random, resulting in an excessive amount of information and being difficult to grasp as reference information when setting a destination.

  This invention is made | formed with respect to this subject, and exists in performing the display which a user can grasp | ascertain the facility information relevant to an area intuitively.

  In order to solve the above-mentioned problem, when the place name displayed on the map is selected, the invention according to claim 1 puts the place name on the map based on the attribute information of the point related to the selected place name. A place name notation design to be visually expressed is created, and a map screen including the selected place name and the created place name notation design is created and displayed.

  According to the present invention, facility information such as facility classification and the number of facilities is displayed in an easy-to-understand manner, so that the user can grasp the current position of the vehicle by overviewing a wide range of maps and It is possible to easily grasp the facility information to be used as reference information when determining the destination.

  Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

  The navigation device 500 includes a place name data storage means 10, a place data storage means 20, a place name attribution point selection means 30, a point group summary information analysis determination means 40, a place name notation design determination means 50, and a map screen creation means 60. And display means 70.

  The place name data storage means 10 is defined by a place name to be represented on a map or a place name called by a common name (hereinafter, the place name refers to a place name called by a place name or a common name), a position, and the place name. The shape data of the range to be recorded is stored as place name data.

  The point data storage means 20 stores attribute information such as names, positions, and types of points that can be visited such as various facilities and sightseeing spots as point data.

  The place name belonging point selection means 30 selects one or more points associated with the place name from the place data storage means 20 with respect to the place name stored in the place name data storage means 10 as belonging points.

  The point group summary information analysis and determination means 40 represents the outline of the point group, such as the total number of belonging points and the breakdown of the types, for the point group that is a set of belonging points selected as points associated with a place name. Analyze and determine features and attributes as summary information.

  The place name notation design determining means 50 determines the place name to which the point group belongs to a design that visually represents the outline information of the point group analyzed and determined by the point group outline information analysis determining means 40 by color, size, shape, etc. The place name notation design to be described is determined.

  The map screen creating means 60 creates a map screen including the place name notation design determined by the place name notation design determining means 50.

  The display means 70 displays the map screen created by the map screen creation means 60.

  Here, the place name data storage means 10 and the place data storage means 20 are a storage medium such as a DVD and its driver, and a place name attribution point selection means 30, a place group summary information analysis determination means 40, a place name notation design determination means 50, The map screen creation means 60 is an integrated computer composed of a CPU, an internal memory, or the like, or an executable program registered on the computer. The display means 70 is an image display device such as a CRT or a liquid crystal monitor.

  Next, the operation of this embodiment will be described using the flowchart shown in FIG.

  In step S101, the range of the map to be drawn is first determined. In general, a navigation device usually draws a map around the vehicle position. For example, when a user is scrolling to find a place where he wants to see the map, the map is drawn according to the scroll operation amount. Move the center from your vehicle position. The coordinates of the drawing center are determined through an own vehicle position measuring device such as a GPS receiver or an input device such as a joystick. Further, since the size of the map corresponding to the display screen is determined from the scale of the map to be displayed, the map drawing range is determined together with the given coordinates of the drawing center. After this, the flow moves to step S102.

  In step S102, the map screen creation means 60 draws map elements other than place names such as roads and backgrounds. After this, the flow moves to step S103.

  After step S103, for all place names whose display positions are within the drawing range, the outline information of the points belonging to each place name is examined, the place name notation design is determined, and the process of displaying on the map is repeated.

  In step S103, it is checked whether there is any place name in the map drawing range determined in step S101 that has not been processed after step S104, and the place name is not processed after step S104. If there is, the flow moves to step S104. On the other hand, if there is no processing after step S104, the flow proceeds to step S111, and a series of map drawing processing ends.

  In step S104, if there is a place name that has not been processed in step S105 and thereafter, the place name is selected, and the processed name provided for this place name is determined for branching when the process returns to step S103 again. Set the flag. After this, the flow moves to step S105.

  In step S105, points existing in the area covered by the place name selected in step S104 are searched, these points are set as belonging points belonging to this place name, and a set of belonging points is set as a point group. In this embodiment, it is assumed that the place name data storage means 10 has shape data such as a polygon indicating the definition range of each place name. Since it can be known by simple calculation whether the arbitrary coordinates are within the range of the certain shape or not, the position coordinates of the point data stored in the point data storage means 20 are determined in step S104. Only those within the definition range of the place name selected in (1) are selected, and the selected point is set as the belonging point belonging to this place name. After this, the flow moves to step S106.

  In step S106, it is verified how many such belonging points are found for this place name. In the present invention, the place name written on the wide-area map serves as a headword for searching for a point to be visited, and is therefore preferably associated with a certain point. Rather, if the place name without the related point is not displayed, the effect that the destination can be determined even from the wide area map can be shown more clearly.

  Therefore, step S106 corresponds to processing for removing place names that do not contribute as headwords from the notation target. The verification criterion is whether there are more than a predetermined number of belonging points. Here, it is possible to make a simple determination of whether or not there is an attribution point by setting the predetermined number to 1, and based on the viewpoint that a place name related only to a few points cannot sufficiently serve as a headword. The predetermined number may be a plurality of points. If the determination criterion is not satisfied, the place name is not described, and the flow returns to step S103. On the other hand, if the determination criterion is satisfied, the flow proceeds to step S107.

  In step S107, the feature analysis of the point group is performed on the point group that is the set of belonging points selected in step S105. That is, the feature information and attributes that can briefly show the outline of the point group, specifically, the type, the number, and the position of each belonging point are examined to determine the outline information of the point group. After this, the flow moves to step S108.

  In step S108, based on the summary information representing the characteristics of the point group obtained in step S107, a place name notation design for notation of the place name, that is, a character string indicating the place name itself, a simple figure displayed as a symbol, etc. Designs that can be visually differentiated, such as color, size, and shape of After this, the flow moves to step S109.

  In step S109, it is determined whether or not to display the place name notation design determined in step S108 on the map. Place name notation design is not always displayed, but if you can select whether or not to display it as necessary, you can avoid unnecessary information display when it is not necessary, and complicated information High convenience. Therefore, it is determined whether or not display is performed in this step. Here, whether or not to display is displayed by, for example, displaying a message asking whether or not to display a place name design on the display means 70 and operating a display selection switch (not shown) provided separately to the user. Let Or you may make it select using an audio | voice input means (illustration omitted). When displaying a place name notation design, a flow transfers to step S110. On the other hand, when the place name notation design is not displayed, the flow proceeds to step S103.

  In step S110, a place name is written according to the decided place name notation design. After this, the flow moves to step S103. Thereafter, the above process is repeated for all place names to be displayed in the drawing range.

  Hereinafter, the feature analysis of the point group in step S107 and the determination of the place name design in step S108 will be described in detail with some display examples. FIG. 22 shows an example of a conventional wide area map display as a comparison target.

  The simplest example of information representing the characteristics of a point group is the number of belonging points.

  FIG. 3 shows an example in which the number of belonging points belonging to each place name is counted, and the font size of the place name and the size of the circle that is the place name notation design are changed according to the number. In this display example, “Nasu” with a large number of attribution points is represented with a large circle and a large font, and “Nishi Nasuno” with a small number of attribution points is represented with a small circle and a small font.

  Similarly, FIG. 4 shows a display example in which the number of belonging points belonging to each place name is indicated by the drawing color of the circle of the place name notation design (indicated by the difference in the drawing pattern in FIG. 4). For example, when the number of belonging points is 20 points or more, dark gray, 12 to 19 points are a little dark gray, 6 to 11 points are light gray, and 5 points or less are lighter gray. Several corresponding ranks are provided, and a drawing color is assigned to each of them in advance. In addition to the circle, the font color of the place name may be changed.

  Further, FIG. 5 shows an example in which the number of belonging points belonging to each place name is expressed by the number of large and small circles written in the vicinity of the place name. If the place name design is represented by a set of small element designs in this way, for example, in FIG. 5, one large circle has five belonging points and one small circle has one belonging point. The specific number of belonging points can also be indicated by the number and shape of the designs.

  Next, as summary information representing the characteristics of the point group, a display example is shown in which the approximate distribution range of the point group is analyzed from the location of each belonging point and visually expressed.

  FIG. 6 shows details of a flow corresponding to the point group feature analysis in step S107 of FIG. 2 and the place name notation design determination in step S108.

  In step S201, the position coordinates of all belonging points are obtained. For example, if there are nine belonging points belonging to “Nasu”, the position coordinates of each belonging point are obtained, for example, at the positions indicated by asterisks in FIG. After this, the flow moves to step S202.

  In step S202, the center of gravity G of these nine belonging points is obtained. In FIG. 7, the position of the center of gravity G is indicated by a cross. After this, the flow moves to step S203.

  In step S203, the distance from the center of gravity G to each belonging point is calculated, and the standard deviation (square root of the sum of squares) σ is obtained. After this, the flow moves to step S204.

  In step S204, a circle (C in FIG. 7) having the center of gravity G as the center and a radius of 2σ, for example, is defined as a place name notation design representing “Nasu”.

  By the method as described above, the approximate distribution range of the belonging points belonging to the place name can be simply shown by a simple design.

  The position coordinates indicating the character string indicating the place name of “Nasu” may be the position coordinates stored in advance in the place name data storage means. However, from the viewpoint of easy comparison between the character string and the symbol circle. The position coordinates representing the character string may be matched with the position coordinates of the center of gravity G.

  In this embodiment, a circle is used as a design indicating the distribution range, but the present invention is not limited to this.

  As described above, if the approximate distribution range of attribution points can be obtained with a simple figure size, the distribution density of attribution points belonging to each name can be obtained from this figure and the total number of attribution points. . In this case, as in FIGS. 3 to 5, the size, color, and number of element figures of the design may be determined according to the distribution density. Furthermore, for example, as shown in FIG. 8, the distribution range of belonging points can be represented by the position and size of a circle, and the distribution density and the total number of belonging points can be represented by a circle drawing color (shown as a pattern in FIG. 8).

  The above is an example that mainly uses the characteristics related to the number of locations and the position to represent the characteristics of the point group. However, as more detailed information, what kind of points belong to a place name? This information is an important clue in determining where to visit next. Hereinafter, an example of a place name notation design in which a breakdown of the types of belonging points is analyzed and represented by a simple design is shown.

  FIG. 9 to FIG. 11 show examples of place name notation designs that classify and indicate the types of belonging points. In these examples, there are three main types of points: “view” categories such as museums, zoos, temples and shrines, “play” categories such as amusement parks and sports parks, and “buy” shopping centers and outlets. Classified into categories. As for this classification, other classifications such as “eat” like a restaurant and “stay” like a hotel can be considered.

  FIG. 9 shows an example in which the number of belonging points belonging to each classification is included among the belonging points belonging to the names of each place.

  In FIG. 9, the three classifications of belonging points are indicated by small circles of different drawing patterns, and when there are no belonging points belonging to a certain classification, the small circles of the pattern are not drawn. Furthermore, the number of belonging points belonging to each classification and the total number of belonging points belonging to the place name are also expressed by the size of each small circle and the large circle surrounding the small circle.

  For example, in Nasu, all belonging points classified as “see”, “play” and “buy” exist, but in Shirakawa, there are no belonging points classified as “buy”. It can also be seen that the total number of belonging points belonging to Shirakawa is greater than the total number of belonging points belonging to Nishinasuno.

  Similarly, FIG. 10 is an example in which belonging points belonging to different classifications are represented by different drawing patterns, but the number of belonging points belonging to each classification is determined according to the composition ratio of each classification, not the size of the small circle. It is represented by the size of the central angle of the fan shape.

  FIG. 11 shows the same information as FIG. 9 with a design having a different shape instead of a different drawing pattern. The design representing the classification of the belonging point may be a simple figure as long as it can be identified, but information readability in a short time is improved by using a design that can associate the classification more intuitively.

  In addition, by presenting information of all three types of classification, the display becomes rather complicated, and if information readability is considered to be reduced, only the information of the classification with the most belonging points is described for each name. It may be that. In this case, since only one pattern (color) and shape representing the classification having the most belonging points in each place name is determined, the display conforms to FIG. In this case, since other information is lost, only the information of the classification having the most belonging points may be described only for the place names where the composition ratio of the classification is extremely unequal.

  Furthermore, as a method of avoiding complication of display without missing the information to be presented, using a mixed color obtained by mixing drawing colors representing each classification according to the composition ratio of the number of belonging points belonging to each classification, A method of drawing the entire place name design is conceivable. For example, if there are 5 “view” attribution points, “play” attribution points, and “buy” attribution point for the place name “Nasu”, the “view” drawing color is green, “play” If "" is blue and "buy" is red, a slightly bluish green mixed at a ratio of green: blue: red = 5: 3: 1 is used as a drawing color for a circle or character string representing "Nasu". This display is also a display according to FIG. Although this method does not convey the details about each classification in detail, the function to convey the outline intuitively is sufficiently fulfilled.

  A usage example of the navigation device 500 in which the place name design is described as described above will be briefly described. For example, as shown in FIG. 9, a navigation map in which a place name notation design is displayed with a design that indicates the number of belonging points belonging to the place name for each place name by the size of a circle for each classification is displayed. And In this situation, the user is running around Nasu, for example, but instead of going to the destination immediately, he looks around Nasu to find a place where he can spend some time and stop. Suppose you are looking at a map at a scale that can be widely seen.

  In FIG. 9, “Nasu” is indicated by the largest circle, which indicates that there are many points that can be visited. Here, when the user has a purpose of “shopping”, it can be seen that “black” has more “buy” classification points than “Nasu”. Therefore, the user can make a rough drive plan by going to Kuroiso, enjoying shopping, spending an appropriate time, and heading to Nasu simply by looking at the wide area map.

  When driving according to this rough plan, you can drive with peace of mind while receiving route guidance by setting a route with “Kuroiso” as the stopover and “Nasu” as the destination. This route setting operation can be easily performed using an input interface linked to the place name notation. For example, touching a place name “black 磯” shown on the map as shown in FIG. 12 opens an operation command sub-menu for “black 磯” as shown in FIG. 13. If "" is selected, the route including the waypoint is reset as shown in FIG. 14, and the route guidance is started. Alternatively, the input means may be voice input. In this case, the place names written on the map, that is, the four place names “Nasu”, “Shirakawa”, “Kuroiso”, “Nishinasuno” in the example of FIG. By doing so, the recognition rate can be increased by reducing the number of recognition words.

  In addition, if “detailed display-buy” is selected from the submenu in FIG. 13, the “black 磯” area is enlarged as shown in FIG. 15, and the distribution of the belonging points of the “buy” classification existing therein is shown. May be.

  FIG. 16 shows a block diagram of the first embodiment of the present invention. This example differs from the above-described embodiment in the method of selecting the belonging point belonging to the place name and the notation of the place name notation design.

  The navigation device 501 includes a place name data storage means 10, a place data storage means 20, a place name attribution point selection means 30, a point group information holding means 45, a place name notation design determination means 50, a map screen creation means 60, Display means 70 and road data storage means 80 are provided.

  Since the place name data storage means 10, the place data storage means 20, the place name attribution point selection means 30, the place name notation design determination means 50, the map screen creation means 60, and the display means 70 are the same as those in the above-described embodiment, description thereof will be omitted.

  The point group information holding unit 45 temporarily stores the position coordinates and attributes of each point collectively for the point selected as the belonging point of a certain place name.

  The road data storage means 80 stores road network data necessary for calculating a predicted time required to move between two points given at least two arbitrary points.

  Here, the place name data storage means 10, the point data storage means 20, and the road data storage means 80 are a storage medium such as a DVD and its driver. The place name attribution point selection means 30, the point group information holding means 45, the place name notation design. The determining unit 50 and the map screen creating unit 60 are an integrated computer composed of a CPU, an internal memory, or the like, or an executable program registered on the computer. The display means 70 is an image display device such as a CRT or a liquid crystal monitor.

  FIG. 17 shows a flowchart of the operation of the present embodiment. Since the processing of each step is almost the same as the flow of the embodiment shown in FIG. 2, different points will be mainly described below.

  In step S305, the location name that is the subject of the current examination is searched for points that are likely to be reached relatively easily (reachability), and these locations belong to the location name. A point group. In this embodiment, the required travel time is used as an index for determining the reachability. In general, a navigation apparatus has a function of calculating a shortest route from a current position to a destination and a required time when the destination is set. The shortest route and the required time are obtained by a well-known algorithm such as the Dijkstra method based on the link data configured in a network and the estimated travel time given to each link. Therefore, in this embodiment, it is assumed that such road network data is stored in the road data storage means 80, and the place name belonging point selection means 30 applies the shortest route calculation algorithm to start from the representative point of the current target place name. Calculate the minimum required time to reach each point. Then, only points where the required time is less than or equal to a predetermined upper limit value are selected and set as belonging points belonging to this place name. It is assumed that the position of the representative point indicating the position of each place name is set in advance and stored in the place name data storage means 10.

  In step S307, the position coordinates of each belonging point and their attributes, here, the type of each belonging point are checked for the retrieved belonging point, and the point group information holding unit 45 holds this as point group information. FIG. 18 shows, as an example, the positions and types of nine points retrieved as belonging points belonging to the place name “Nasu” by the positions and patterns of small circles. After this, the flow moves to step S308.

  In step S308, an approximate distribution range of belonging points is obtained. This may be obtained, for example, according to the procedure of S202 to S204 in the flow shown in FIG. That is, the center of gravity G of each belonging point distributed is obtained, and the radius of a circle indicating the distribution range (hereinafter referred to as a distribution circle) is determined based on the deviation of the distance from the center of gravity G to each belonging point. FIG. 18 shows an example of the distribution circle as C in this way. After this, the flow moves to step S309.

  In step S309, it is determined whether or not the minute design of each belonging point set in advance and the distribution circle obtained in step S308 are displayed on the map. This step is equivalent to step S109 in FIG.

  In step S310, only for the belonging points inside the distribution circle thus obtained, a small design having a color or shape indicating the classification of the belonging point at the coordinate position of the belonging point, for example, a small equivalent to that shown in FIG. Write a circle. The minute design to be described is set in advance. The reason for limiting the notation only to the attribution point inside the distribution circle is that the place name is too far from the notation position of the place name when considering the place name as a headline to refer to the belonging point belonging to the place name collectively. Even if a point is written, it is difficult to contrast the belonging point with the place name, and if there are many belonging points that are far from the place name notation and are widely distributed throughout the screen, the display becomes diffuse and serves as a heading for the place name. This is a process in consideration of the fact that the effects of the above are impaired.

  As a result, for example, 2 points out of the belonging points of “Nasu” shown in FIG. 18 are excluded from the notation target, and the final wide area map display is changed to “Nasu” as shown in FIG. On the other hand, only 7 points are shown. However, as long as all point information is accurately communicated, all nine belonging points may be described. After this, the flow moves to step S311.

  In step S311, a place name character string is appended to the set of these belonging points, and if necessary, the previously obtained distribution circle is also displayed, which is used as the place name notation design. In the example shown in FIG. 19, in addition to the place name character string notation, only the outer edge of the distribution circle is indicated by a dotted line.

  In this embodiment, when a route is set, a place name notation design is written for place names around the route.

  FIG. 20 shows a block diagram of this embodiment.

  The navigation device 502 includes a place name data storage means 10, a place data storage means 20, a place name attribution point selection means 30, a place group summary information analysis decision means 40, a place name notation design decision means 50, and a map screen creation means 60. Display means 70, road data storage means 80, route setting means 90, and route surrounding place name selection means 100.

  Place name data storage means 10, spot data storage means 20, place name attribution point selection means 30, spot group summary information analysis determination means 40, place name notation design determination means 50, map screen creation means 60, display means 70, road data storage means 80 Since this is the same as that of the first embodiment, description thereof is omitted.

  The route setting unit 90 sets a route to the destination based on the road data stored in the road data storage unit 80.

  The route surrounding place name selection unit 100 selects a place name around the route set by the route setting unit 90 from the place names displayed on the map according to a predetermined condition. Here, the predetermined condition is, for example, a condition of a place name within a predetermined distance from the route.

  Here, the place name data storage means 10, the point data storage means 20, and the road data storage means 80 are a storage medium such as a DVD and its driver. The place name attribution point selection means 30, the point group summary information analysis determination means 40, the place name The notation design determining means 50, the map screen creating means 60, the route setting means 90, and the route surrounding place name selecting means 100 are an integrated computer comprising a CPU, an internal memory, etc., or an executable program registered on the computer. The display means 70 is an image display device such as a CRT or a liquid crystal monitor.

  In this embodiment, the destination is set by the user, and the route setting means 90 sets the route from the current position to the destination. There are various methods for setting the route, including the setting of the shortest route described in the first embodiment, but the description is omitted because it is out of the gist of the present invention.

  After the route is set by the route setting means 90, the place name around the route on which the place name notation design is displayed is selected by the route surrounding place name selecting means 100. Since there may be many place names around the route, a place name that satisfies a predetermined condition, such as a place name whose distance from the route is within a predetermined distance, is selected from the place names around the route.

  Since other operations are the same as those in the first embodiment, description thereof is omitted.

  In this way, by selecting the place names around the set route and displaying the place name design, it is possible to use as reference information when making a detour when there is a time allowance to reach the destination.

  If the destination is set and the destination is reached without taking a detour, if the place name design is not displayed in step S309 in FIG. 17, unnecessary information is not displayed, which is bothersome. Can be reduced.

  In this embodiment, the place name to be displayed is changed according to the scale of the map display, and the place name notation design for the place name is displayed.

  FIG. 21 shows a block diagram of the present embodiment. In the navigation apparatus 503 according to the present embodiment, in the block diagram of FIG. 1, the place name data storage means 10 has place name data hierarchical structure storage means 11 that stores place name data in a hierarchical structure according to the scale of the map. A place name selecting unit 110 for selecting a place name corresponding to the scale is further provided, and the other parts are the same as those in the block diagram of FIG.

  The place name selection means 110 selects a place name from the place name data hierarchical structure storage means 11 according to the scale of the map. For example, in the case of a map with a small scale, a place name is selected centering on a place name of a large city such as Yokohama, and town names such as Kamiooka and Totsuka are selected as the scale of the map increases. At this time, if town names such as Kamiooka and Totsuka are not selected, the place name notation design for those place names is not displayed, and the place name notation designs corresponding to these town names are displayed when the town names are selected. .

  In this way, when the place name displayed according to the scale of the map changes, by displaying the place name notation design corresponding to the place name, the information presented by the place name notation design can be displayed regardless of the scale change of the map. It can be used accurately.

  In the description so far, the description has been given in the embodiment in which information necessary for the map display is searched and analyzed, and the place name design is determined and drawn each time. However, if all place names are targeted as place names that determine the place name design, the same processing is executed with the same system, and the process of notifying the place name design that is finally decided is replaced with the storage process of place name design. It functions as a map data creation system that automatically determines the place name notation design for the place name data. In this case, in addition to the above-described display effects, it is possible to create data for performing such effective notation on a very large scale without human intervention.

  According to the navigation device of the embodiment of the present invention described above, the following operational effects can be obtained.

  In the navigation device of the embodiment of the present invention, a place name data storage means for storing place names to be displayed on a map and at least the position of the place name as place name data, names of places that can be visited, positions, and facility names One or more points stored in the point data storage means associated with the place name stored in the place name data storage means and the place data storage means for storing the attribute information including the type as the place data are used as the place names. As point group summary information, a place name belonging point selection unit that selects from the point data storage unit as an belonging point to be attributed, and information that represents the outline of the point group including the features and attributes of the point group that is a set of the belonging points The point group summary information analysis determination means for analysis determination and the point group summary analyzed and determined by the point group summary information analysis determination means Creates a map screen including a place name notation design determining means for determining a design for visually expressing information as a place name notation design for indicating the selected place name, and the place name notation design determined by the place name notation design determining means. And a display means for displaying the map screen created by the map screen creation means.

  According to this configuration, detailed information such as the classification of facilities and the number of facilities is displayed in an easy-to-understand manner, so the user can grasp the current position of the vehicle by overviewing a wide range of maps and It is possible to easily grasp the detailed information to be used as reference information when determining the destination.

  Further, in the navigation device according to the embodiment of the present invention, the point group summary information analysis unit counts the number of belonging points included in the point group, and the place name notation design determining unit determines the number of belonging points. Based on this, at least one of the size, drawing color, and number of components of the place name design is determined.

  Moreover, in the navigation apparatus of the embodiment of the present invention, the place name notation design determining means determines the drawing color of the place name notation design based on the number of belonging points.

  According to this configuration, it is possible to grasp at a glance the number of points that can be visited related to the names of each place, and it is possible to make a quick determination based on at least a criterion that “there is a point that can be visited”.

  In the navigation device according to the embodiment of the present invention, the point group summary information analysis unit determines a distribution range of the point group from the positions of the belonging points included in the point group, and determines the place name notation design determination. The means determines at least one of the notation position and size of the place name notation design based on the distribution range.

  According to this configuration, it is possible to get an overview of the distribution range of points that can be visited at the same time while overviewing the wide area map information, and when visiting the actual location indicated by the place name, This is effective in examining approach methods that take into account the above.

  Further, in the navigation device according to the embodiment of the present invention, the point group summary information analysis means calculates the point from the count of the number of belonging points included in the point group and the position of the belonging point included in the point group. The distribution range of the group is determined, the distribution density of the belonging points in the point group is calculated based on the number of belonging points and the distribution range, and the place name notation design determining unit is configured to determine the distribution density based on the distribution density. At least one of the size of the place name design, the drawing color, and the number of components was decided.

  In the navigation device according to the embodiment of the present invention, the place name notation design determining means determines the drawing color of the place name notation design based on the distribution density.

  According to this configuration, the distribution density of the candidate visit points can be grasped at a glance, and the quick determination of the criterion that “there are points that can be visited” is made as in the case of indicating the number of points that can be visited. It becomes possible.

  Further, in the navigation device according to the embodiment of the present invention, the point group summary information analyzing unit analyzes and determines a breakdown of the types of the belonging points included in the point group, and the place name notation design determining unit includes the Based on the breakdown of the types, the place name notation design is configured and determined by combining element designs having different drawing colors or shapes for each type.

  According to this configuration, it is possible to grasp at a glance the types of candidate visit points related to the names of each place, and it is possible to make a quick determination based on the criteria that “there is such a place if you go here”.

  In the navigation device according to the embodiment of the present invention, the point group summary information analysis unit analyzes the breakdown of the type of the belonging points included in the point group, and corresponds to the most belonging points. The place name notation design determining means determines at least one of the drawing color and the shape of the place name notation design based on the kind corresponding to the largest number of belonging points.

  Further, in the navigation device of the embodiment of the present invention, the place name notation design determining means determines the drawing color of the place name notation design based on the type corresponding to the most belonging points. .

  According to this configuration, the display can be simplified and information readability can be improved by narrowing down only the information that characterizes each place name most.

  Further, in the navigation device according to the embodiment of the present invention, the point group summary information analysis unit analyzes the breakdown of the type of the belonging point included in the point group, and the belonging point included in the point group. The place name notation design determination means mixes the drawing color of the place name notation design with the drawing color representing the type based on the composition ratio. The mixed color was decided.

  According to this configuration, it is possible to simplify the display and improve information readability without missing information on the type of belonging point.

  Further, in the navigation device according to the embodiment of the present invention, a place name data storage means for storing place names to be displayed on a map and at least the position of the place name as place name data, and names, positions of places that can be visited, One or more said points memorize | stored in the said point data storage means linked | related with the said location name memorize | stored in the said location name data storage means memorize | stored the attribute information containing the kind of facility as said location data A place name belonging point selection means for selecting from the point data storage means as an belonging point belonging to the place name, an belonging point information holding means for temporarily storing the position and attribute information of the belonging point belonging to the place name, and the belonging point For a point group that is a set of points, a drawing color or shape determined based on the attribute information of the belonging point belonging to the point group The design of the place name notation is arranged in the vicinity of the position of the belonging point, and a set of the minute designs for the belonging point belonging to the point group is determined as a place name notation design that describes the place name to which the point group belongs. Determining means, map screen creating means for creating a map screen including the place name notation design determined by the place name notation design determining means, display means for displaying the map screen created by the map screen creating means, It was decided to have.

  According to this configuration, it is possible to read information on individual visit candidate points to some extent at the same time while grasping the wide-area geography, and it is possible to simultaneously present effective information in a situation where the visit destination is examined while running.

  In the navigation device according to the embodiment of the present invention, the route setting means for setting the destination route on the map, and the route surrounding place name for selecting the place name located around the route set by the route setting means A place name notation design determining means for determining the place name notation design of the place name including the place name selected by the route surrounding place name selecting means.

  According to this configuration, the facility information related to the place name within a predetermined distance from the set route can be used as reference information when making a detour when there is a time allowance to reach the destination.

  Further, in the navigation device according to the embodiment of the present invention, the place name data storage means includes place name data hierarchy storage means for storing place name data in a hierarchical structure corresponding to the scale of the map. In response, the place name selecting means for selecting the place name is further provided.

  According to this configuration, the facility information can be grasped more accurately by switching and displaying the facility information related to the place name in accordance with the change in the scale of the map.

  Further, in the navigation device according to the embodiment of the present invention, the place name belonging point selecting means selects the point existing within a predetermined distance with respect to the place name as the belonging point belonging to the place name. .

  According to this configuration, it is possible to select an attribution point of a certain place name with a simple logic, and the processing speed of this part of the procedure is not reduced unnecessarily.

  Further, in the navigation device according to the embodiment of the present invention, the place name belonging point selecting means assigns to the place name a point that can be reached within a predetermined time from a representative position of the place name predetermined for the place name. It was decided to select it as an attribution point.

  According to this configuration, in the light of the purpose of referring to a place name as a destination indicator for finally visiting some point, it is easy to reach the point of belonging when facing the direction represented by the place name Ease of use can be ensured, and the role as a headword for studying candidate sites can be thoroughly enforced.

  As mentioned above, although the Example of this invention was explained in full detail with drawing, an Example is only an illustration of this invention and this invention is not limited only to the structure of an Example. Accordingly, it is a matter of course that the present invention includes any design change within a range not departing from the gist of the present invention.

  For example, the shape, color, and pattern of the place name design are not limited to those described in the present embodiment, and any shape, color, and pattern can be used.

  Moreover, the notation position of the place name and the notation position of the place name notation design are not limited to those described in this embodiment, and can be indicated at any position.

  Further, the block diagrams in the respective embodiments are examples, and the present invention is not limited to these block diagrams as long as equivalent operations are performed.

It is a block diagram of an embodiment of the present invention. It is a flowchart of the process in embodiment of this invention. In embodiment of this invention, it is a display example of the wide area map which shows the number of visit candidate points briefly. In embodiment of this invention, it is another example of a display of the wide area map which shows the number of visit candidate points briefly. In embodiment of this invention, it is another example of a display of the wide area map which shows the number of visit candidate points briefly. In the embodiment of the present invention, it is a flowchart of processing which calculates the distribution range of a visit candidate point. In embodiment of this invention, it is explanatory drawing of the process which calculates | requires the distribution range of a visit candidate point. In embodiment of this invention, it is a display example of the wide area map which shows several information regarding a visit candidate point simultaneously. In embodiment of this invention, it is a display example of the wide area map which shows the breakdown of the kind of candidate visit point. In embodiment of this invention, it is another example of a wide area map which shows briefly the breakdown of the kind of visit candidate point. In embodiment of this invention, it is another example of a wide area map which shows briefly the breakdown of the kind of visit candidate point. In embodiment of this invention, it is explanatory drawing in the case of selecting a waypoint from a wide area map. In the embodiment of the present invention, it is a display example of a screen change when a place name is selected. In the embodiment of the present invention, it is a display example when a new route is set when a waypoint is selected. 5 is a display example of detailed information in the embodiment of the present invention. It is a block diagram of Example 1 of the present invention. It is a flowchart of the process in Example 1 of this invention. In Example 1 of this invention, it is an example of a display of the presence position and classification | category of a group of visit candidate points. In Example 1 of this invention, it is a display example of the wide area map which shows each existing position and classification | category of a visit candidate point with a place name notation. It is a block diagram of Example 2 of the present invention. It is a block diagram of Example 3 of the present invention. It is a display example of the wide area map in the prior art which does not consider point information.

Explanation of symbols

10 place name data storage means 11 place name data hierarchical structure storage means 20 point data storage means 30 place name attribution point selection means 40 point group summary information analysis decision means 45 point group information holding means 50 place name notation design decision means 60 map screen creation means 70 display Means 80 Road data storage means 90 Route setting means 100 Route peripheral place name selection means 110 Place name selection means 500 501 502 503 Navigation device

Claims (13)

A place name data storage means for storing a place name to be displayed on a map and at least the position of the place name as place name data;
Point data storage means for storing, as point data, attribute information including the name, position, and facility type of a point that can be visited;
Place name belonging point selection for selecting one or more points stored in the point data storage means associated with the place name stored in the place name data storage means from the point data storage means as belonging points belonging to the place name Means,
Point group summary information analysis and determination means for analyzing and determining information representing the outline of the point group including the feature amount and attribute of the point group that is a set of the belonging points, as point group summary information;
A place name notation design determining means for determining a design for visually expressing the point group summary information analyzed and determined by the point group summary information analysis determining means as a place name notation design for indicating the selected place name;
Map screen creating means for creating a map screen including the place name notation design determined by the place name notation design determining means;
A navigation device comprising: display means for displaying the map screen created by the map screen creation means. The point group summary information analysis means counts the number of belonging points included in the point group, and the place name notation design determining means determines a drawing color of the place name notation design based on the number of belonging points. The navigation device according to claim 1, wherein The point group summary information analysis means determines a distribution range of the point group from the position of the belonging point included in the point group, and the place name notation design determination means determines the place name notation design based on the distribution range. The navigation device according to claim 1, wherein at least one of the notation position and the size is determined . The point group summary information analyzing means performs determination of the distribution range of the point group from the position of the attribution points included in the count and the point group of the attribution point number contained in the location group, wherein the attribution ground points and A distribution density of the belonging points in the point group is calculated based on the distribution range, and the place name notation design determining means determines a drawing color of the place name notation design based on the distribution density. The navigation device according to claim 1 . The point group summary information analysis unit analyzes and determines a breakdown of the types of the belonging points included in the point group, and the place name notation design determination unit determines a drawing color or a color for each type based on the breakdown of the types. The navigation apparatus according to any one of claims 1 to 3 , wherein the place name notation design is configured and determined by combining element designs having at least one of different shapes . The point group summary information analyzing means analyzes a breakdown of the types of the belonging points included in the point group and determines the type corresponding to the largest number of belonging points, and the place name notation design determining means is the most 5. The navigation device according to claim 1, wherein at least one of a drawing color and a shape of the place name design is determined based on the types corresponding to many of the belonging points . The navigation apparatus according to claim 6 , wherein the place name notation design determining means determines a drawing color of the place name notation design based on the type corresponding to the largest number of belonging points . The point group summary information analysis means analyzes a breakdown of the type of the belonging points included in the point group, and a composition ratio of the number of belonging points for each type with respect to the total number of the belonging points included in the point group The place name notation design determining means determines the drawing color of the place name notation design as a mixed color obtained by mixing drawing colors representing the types based on the composition ratio. The navigation device according to any one of 4 and 7. A place name data storage means for storing a place name to be displayed on a map and at least the position of the place name as place name data;
Point data storage means for storing, as point data, attribute information including the name, position, and facility type of a point that can be visited;
Place name belonging point selection for selecting one or more points stored in the point data storage means associated with the place name stored in the place name data storage means from the point data storage means as belonging points belonging to the place name Means,
Belonging point information holding means for temporarily storing the position and attribute information of the belonging point belonging to the place name;
For a point group that is a set of belonging points, a fine design of a drawing color or shape determined based on the attribute information of the belonging point belonging to the point group is arranged in the vicinity of the position of the belonging point, A place name notation design determining means for determining a set of the minute designs for the belonging point belonging to a point group as a place name notation design that describes the place name to which the point group belongs;
Map screen creating means for creating a map screen including the place name notation design determined by the place name notation design determining means;
A navigation device comprising: display means for displaying the map screen created by the map screen creation means . A route setting means for setting a destination route on a map;
Route surrounding place name selecting means for selecting the place name located around the route set by the route setting means,
The said place name notation design determination means determines the said place name notation design of the said place name including the said place name selected by the said route periphery place name selection means . Navigation device. The place name data storage means includes place name data hierarchy storage means for storing place name data in a hierarchical structure corresponding to the scale of the map, and further comprises place name selection means for selecting the place name according to the scale of the map. The navigation device according to any one of claims 1 to 10 , wherein: The said place name belonging point selection means selects the said point which exists in the predetermined distance with respect to the said place name as the said belonging point which belongs to the said place name, The any one of Claims 1-11 characterized by the above-mentioned. Navigation device. The place name belonging point selecting means selects a point that can be reached within a predetermined time from a representative position of the place name predetermined for the place name as the belonging point belonging to the place name. The navigation device according to any one of 11 .

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