JP6351432B2 - Map drawing system and map drawing method - Google Patents

Description

  The present invention relates to a technique for referring to a point on a map outside a display area.

  In the map display section, the size of the display screen (display area) is physically limited, so that the range of the map that can be displayed at one time is limited. In order to provide a user-friendly map display unit, it is important to be able to grasp information on a map outside the display screen and to easily scroll to a point outside the display screen.

  In this regard, Patent Document 1 discloses a map scroll device that automatically scrolls along a selected line by selecting an arbitrary line on the map such as a road, a coastline, and a railway line.

Japanese Patent Application Laid-Open No. 2004-341028

  However, according to the scroll method of Patent Document 1, the user cannot grasp in advance what kind of facility is ahead of the selected line until the user actually scrolls.

  In view of the above-described problems, an object of the present invention is to provide a map drawing system and a map drawing method that allow a user to easily grasp information on a map outside the display area.

The map drawing system of the present invention includes a map data acquisition unit that acquires map data, and a drawing unit that draws a map in a display area of the display unit based on the map data, and the drawing unit extends inside and outside the display area. A list of related information associated with a portion outside the display area of the selected line selected from the map lines is superimposed on the map and drawn in the display area without scrolling the map.

The map drawing system of the present invention includes a map data acquisition unit that acquires map data, and a drawing unit that draws a map in a display area of the display unit based on the map data, and the drawing unit extends inside and outside the display area. A list of related information associated with a portion outside the display area of the selected line selected from the map lines is superimposed on the map and drawn in the display area without scrolling the map. Therefore, the user can grasp the related information ahead of the selected line without scrolling.

1 is a block diagram showing a configuration of a map drawing system according to Embodiment 1. FIG. 1 is a block diagram showing a configuration of a map drawing system according to Embodiment 1. FIG. 1 is a block diagram showing a configuration of a map drawing system according to Embodiment 1. FIG. 3 is a flowchart showing an operation of the map drawing system according to the first embodiment. It is a figure explaining operation | movement of the map drawing system which concerns on Embodiment 1. FIG. It is a figure explaining operation | movement of the map drawing system which concerns on Embodiment 1. FIG. It is a figure explaining operation | movement of the map drawing system which concerns on Embodiment 1. FIG. It is a figure explaining operation | movement of the map drawing system which concerns on Embodiment 1. FIG. It is a figure explaining operation | movement of the map drawing system which concerns on Embodiment 1. FIG. It is a figure explaining operation | movement of the map drawing system which concerns on Embodiment 2. FIG. It is a figure explaining operation | movement of the map drawing system which concerns on Embodiment 2. FIG. It is a figure explaining operation | movement of the map drawing system which concerns on Embodiment 2. FIG. 6 is a flowchart showing the operation of the map drawing system according to the second embodiment. It is a figure explaining operation | movement of the map drawing system which concerns on the modification of Embodiment 2. FIG. It is a figure explaining operation | movement of the map drawing system which concerns on the modification of Embodiment 2. FIG. It is a block diagram which shows the structure of the map drawing system which concerns on Embodiment 3. FIG. It is a figure explaining operation | movement of the map drawing system which concerns on Embodiment 3. FIG. It is a figure explaining operation | movement of the map drawing system which concerns on Embodiment 3. FIG. 10 is a flowchart showing the operation of the map drawing system according to the third embodiment.

<A. Embodiment 1>
<A-1. Configuration>
When the map drawing system of the present invention draws a map on the display unit, the map related information outside the display area of the display unit is overlaid and drawn on the map so that the map related information outside the display area can be easily obtained. Can be referenced. Further, when related information is selected from the list, scrolling to a point outside the display area is facilitated by scrolling to a point corresponding to the related information.

  Therefore, the map drawing system of the present invention is applied not only to a vehicle navigation device but also to a general map display system. Hereinafter, an example in which the map drawing system is applied to a vehicle navigation device will be described. .

  FIG. 1 is a block diagram illustrating a configuration of a map drawing system 101 according to the first embodiment. The map drawing system 101 is configured by an in-vehicle device in FIG. 1, but may be configured by a combination of a server and an in-vehicle device as shown in FIG. 2, or a server, a smartphone, and an in-vehicle device as shown in FIG. You may comprise by a combination. In FIG. 1, the display unit 7 is illustrated as a configuration different from the in-vehicle device, but the display unit 7 may be included in the in-vehicle device.

  In FIG. 1, a map drawing system 101 includes an input unit 1, a line selection unit 2, a related information acquisition unit 3, a list creation unit 4, a map data acquisition unit 5, a drawing unit 6, a feature database (DB) 11, and a map database. (DB) 12 is provided.

  The input unit 1 is a man-machine interface that accepts an input operation to the map drawing system 101 by a user such as a map scroll operation or a line selection operation.

  The display unit 7 is a display device such as a liquid crystal display device that displays a map. In the following description, the input unit 1 and the display unit 7 are integrally configured as a touch panel.

  The line selection unit 2 acquires user input operation information from the input unit 1, acquires map data from the map DB 12, and based on these, specifies from among the lines on the map extending inside and outside the display area of the display unit 7. Select the line. The line to be selected here is called a selection line. The line is represented on the map as a line having a predetermined length or more, and the display object is not limited to a road, but a river, a railway, a power transmission line, and the like are assumed. In the following description, it is assumed that the selection line has a road as a display object.

  The selection line is obtained by extending the line selected by the user from the lines on the map in the display area in the user selection direction. Here, “extending” a line means tracing along the line. For example, when the line is a road, the road is traced like a road, and when there is a branch, the road is traced with the same road type or the same road name. When the line is a river, when there is a distinction between the main stream and the substream, the main stream may be selected and traced, and any of the branch destination lines may be selected.

  The related information acquisition unit 3 acquires information on the selected line from the line selection unit 2 and acquires related information associated with the list creation location of the selected line outside the display area. For example, POI (Point of Interest) information along the selected line is acquired from the feature DB 11, or information on construction points and traffic congestion points on the selected line is obtained from traffic information provided by VICS (registered trademark). Or get it. In this way, the list creation location may be a point on the selection line or a certain section on the selection line. The POI “along the selected line” may include not only the POI on the selected line but also a POI that exists in the vicinity of the selected line, that is, within a predetermined distance from the selected line.

  The feature DB 11 is a storage medium that stores information related to features on the map, and includes a hard disk drive (HDD), a memory stick, or the like. The related information includes the name and position information of the feature. For example, in the case of a business facility such as a gas station, the related information may include information such as business hours.

  The map DB 12 is a storage medium that stores map data, and includes a hard disk drive (HDD), a memory stick, and the like.

  The list creation unit 4 obtains the related information of the list creation location from the related information acquisition unit 3, and creates a list of related information based on this.

  The map data acquisition unit 5 acquires map data from the map DB 12 and outputs the map data to the drawing unit 6.

  The drawing unit 6 receives the map data from the map data acquisition unit 5 and draws a map. In addition, when the drawing unit 6 receives a list of related information from the list creation unit 4, the drawing unit 6 draws the list superimposed on the map. Then, the drawing unit 6 outputs the drawing data to the display unit 7, and a map or a map and a list are superimposed on the display unit 7.

  The line selection unit 2, the related information acquisition unit 3, the list creation unit 4, the map data acquisition unit 5, and the drawing unit 6 are a CPU (Central Processing) that executes a program stored in a memory such as a RAM (Random Access Memory). Unit).

<A-2. List drawing>
FIG. 4 is a flowchart showing the list drawing operation of the map drawing system 101. Hereinafter, the operation of the map drawing system 101 will be described with reference to FIG.

  First, in an initial state in which the user does not perform any operation, the map data acquisition unit 5 acquires predetermined map data from the map DB 12, draws a map with the drawing unit 6, and displays a map with the display unit 7 ( Step S1).

  Next, the line selection unit 2 determines whether or not the user is touching the touch panel (step S2). Since touch coordinate information is input from the input unit 1 during the touch, the line selection unit 2 can determine whether or not the touch is in progress.

  If the touch is in progress, the selected line is determined based on the touch coordinates (step S3). Here, the section (selected section) of the line on the map selected by the user is acquired from the locus of the drag operation. Specifically, a line segment on the map that coincides with or is close to the trajectory of the drag operation is acquired from the map DB 12 as a selected segment. Then, an extension of the selected section in the drag direction is determined as the selection line.

  Next, it is determined whether or not the user's touch is finished (step S4). If the user continues the drag operation, the process returns to step S3 and the selected line is determined again. That is, as necessary, the calculation of the distance between the drag operation trajectory and the line on the map is repeated to update the selected section and the selected line. When the drag operation ends, that is, when the touch ends (Yes in step S4), the selection is performed. The line is determined and stored (step S5).

  Thereafter, it is determined whether or not the map display is finished (step S11). If the map display is to be continued, the process returns to step S1 to display the map (step S1).

  If the user is not touching the touch panel in step S2, it is determined whether there is a selected line (step S6). If the line selection unit 2 stores the selected line in step S3, the drawing unit 6 acquires the selected line from the line selection unit 2 and performs highlight drawing of the selected line (step S7). That is, the selected line is drawn with different colors as compared with other routes such as roads and rivers.

  Next, the related information acquisition unit 3 acquires related information associated with the list creation location of the selected line outside the display area (step S8). Here, POI information along the selected line is acquired from the feature DB 11, and information on construction points and traffic jam points along the selected line is acquired from the traffic information.

  It should be noted that the attributes of the list creation location such as “Eating and drinking facilities”, “Construction / congestion information”, “Gas station”, “Intersection”, etc. are determined in advance, and the relevant attribute location or location is designated as the list creation location. Information may be acquired. For example, when the user defines the attribute “gas station” through the input unit 1, only the information on the gas station along the selection line outside the screen is acquired.

  In addition, since the amount to be displayed on the display unit 7 at a time as a list is limited, the predetermined number of points or sections from the closest to the display center position of the current map in order of distance according to the display area on the display unit 7 Only relevant information may be acquired.

  Thereafter, the list creation unit 4 creates a list of related information acquired by the related information acquisition unit 3 (step S9). The list created here is superimposed and drawn on the map in the drawing unit 6 and displayed on the display unit 7.

  Next, the line selection unit 2 deletes the memory of the selected line (step S10), and the process proceeds to step S11.

  With the above operation, the display shown in FIG.

<A-3. Use List>
5, 6, and 7 show display examples on the display unit 7. In the example of FIG. 5, when the user touches a specific line on the screen and drags the line upward on the screen with the map displayed on the display screen, the section selected by the user by dragging (selected) A state in which a line extending the section) upward is highlighted as a selection line with a thick arrow. Then, a list of related information of points or places along the selection line outside the display area is superimposed on the map.

  The list of related information is superimposed on the map so as not to interfere with the highlight display of the selected line and the display of the vehicle position in the map around the vehicle position so as not to disturb the display of the map. Among the points or points along the selection line outside the display area, four related information of points corresponding to the attribute “intersection, roadside station” defined by the user are displayed in a list in order from the vehicle position. As related information, in addition to the name of the point such as “ABC intersection”, the distance from the reference point to the point and the direction of the point viewed from the reference point are shown. Here, the reference point indicates the vehicle position.

  When the user touches and selects “DEF intersection” in the list (FIG. 6), automatic scrolling display to the DEF intersection is performed, and the map display is changed to that shown in FIG. Further, instead of scrolling display, the map display shown in FIG. 6 may be jumped to the map display shown in FIG. 7. In this case, in which direction the jump is viewed from the display range of the map before the transition. It is desirable to insert an animation that can identify the user.

  By the above operation, the user can grasp the related information of the point or section outside the display area in the form of list display. Further, by selecting the related information displayed in the list, the map display including the corresponding point or section is performed, so that the map drawing system with excellent operability is obtained.

  In the description of the related information acquisition unit 3 and the list creation unit 4 described above, only the predetermined number of list creation locations that are displayed as a list on the display unit 7 at a time are related information and the list creation is performed. However, it is also possible to previously create the list by acquiring related information for the number of list creation locations that are larger than the list displayed at one time. Then, in response to the user's operation of dragging the list in the arrangement direction (the screen vertical direction in FIGS. 4, 5 and 6), the drawing unit 6 performs scroll drawing of the list, and the display unit 7 performs scroll display of the list. May be. Thereby, it is possible to refer to related information of a large number of maps outside the display area that are not limited to the size of the display area, and to display a map of a point or section of the related information with a simple operation.

  In addition, in the related information acquisition unit 3, several kinds of attributes are set in advance as the list creation location attributes, and the list creation location attributes are changed by receiving an operation of dragging the list in the direction orthogonal to the arrangement direction on the touch panel. Also good. In FIG. 8, the expressway is highlighted as a selected line, and the service area (SA) and the interchange (IC) are attributes of the list creation location. Here, when the user drags the list in the horizontal direction of the screen orthogonal to the arrangement direction, the attribute of the list creation location is changed to the gas station, and the related information of the gas station is displayed in a list (FIG. 9).

  In this case, user operation information is acquired from the input unit 1, the related information acquisition unit 3 changes the attribute of the list creation location, and the related information of the point or location having the changed attribute is obtained from the feature DB 11 or the traffic information. Get from. Then, the list creation unit 4 re-creates the list, and the drawing unit 6 performs superimposing drawing of the map and the list.

  Thereby, the user can change the attribute of the related information displayed in the list by a simple operation of dragging the list, and can display the list of related information that the user wants to refer to.

<A-4. Effect>
A map drawing system 101 according to Embodiment 1 includes a map data acquisition unit 5 that acquires map data, and a drawing unit 6 that draws a map in a display area of the display unit based on the map data. Draws a list of related information associated with a portion outside the display area of the selected line selected from the map lines extending inside and outside the display area on the map in a superimposed manner. Therefore, the user can grasp related information outside the display area of the selected line without scrolling.

  Further, the map drawing system 101 includes a line selection unit 2 that selects a selection line from map lines extending inside and outside the display area, and a related information acquisition unit 3 that acquires related information associated with a portion outside the display area of the selection line. And a list creation unit 4 for creating a list of related information. The drawing unit 6 superimposes the list created by the list creation unit 4 on a map and draws it on the display area. Therefore, the user can grasp related information outside the display area of the selected line without scrolling.

  Further, the line selection unit 2 sets a selection line as a line that extends a selection section that passes through the selection point on the map in the display area selected by the user in at least one direction, and the related information acquisition unit 3 selects the selection line. A point or section on the map outside the display area along the list is used as a list creation location, and related information on the list creation location is acquired, and the list creation unit 4 creates a list of related information on the list creation location. Therefore, the user can grasp related information outside the display area of the selected line without scrolling.

  The selection line is a line obtained by extending the selection section in the direction selected by the user. Therefore, the user can grasp related information outside the display area of the selection line without scrolling.

  Moreover, since the drawing unit 6 draws a map around the list creation location selected by the user when the user selects a list creation location from the list, the user refers to an important point outside the display area with a simple operation. Can do.

  In addition, when the user selects a list creation location from the list, the drawing unit 6 performs scroll drawing from the range currently displayed in the display area to the list creation location selected by the user. Thereby, the user can refer to an important point outside the display area with a simple operation.

  Further, the display unit 7 includes a touch panel, and the line selection unit 2 determines a selection point based on the touch position on the touch panel, so that the user can select a line for displaying the list by operating the touch panel.

  Further, the line selection unit 2 determines the selection point based on the drag start position of the drag operation on the touch panel, and determines the selection section based on the drag operation drag section, so that the user can display the list by operating the touch panel. Can be selected.

  In addition, by setting a line in which the selected section is extended in the direction based on the drag direction of the drag operation as the selection line, the user can select a line for displaying the list by operating the touch panel.

  Further, since the related information acquisition unit 3 determines the list creation location based on the distance of the drag operation on the touch panel, the user can change the location of the list display according to the distance of the drag operation.

  The drawing unit 6 performs scroll drawing of the list when an operation of dragging the list in the arrangement direction on the touch panel is performed. Thereby, even if the display space of the list is limited, it is possible to refer to a lot of related information outside the display area.

  Further, the list creation place is a place having a predetermined type of attribute among points or sections on the map outside the display area along the selection line, and the related information acquisition unit 3 displays the list on the touch panel. When an operation of tracing in the direction orthogonal to the arrangement direction is performed, the attribute of the list creation location is changed. Thereby, the user can refer to the related information of the desired attribute by the drag operation.

  In addition, since the drawing unit 6 draws the selected line in a manner different from other lines, the selected line can be clearly identified on the map.

  In the map drawing method according to the first embodiment, the map data acquisition unit 5 acquires map data, the drawing unit 6 draws a map on the display area of the display unit 7 based on the map data, and the drawing unit 6 The drawing of the map is to draw a list of related information related to the portion outside the display area of the selected line selected from the lines of the map extending inside and outside the display area and drawing it on the display area. Therefore, the user can grasp related information outside the display area of the selected line without scrolling.

<B. Second Embodiment>
<B-1. Configuration>
The configuration of the map drawing system 102 of the second embodiment is the same as the configuration of the map drawing system of the first embodiment shown in FIGS.

  In the first embodiment, the selection line is determined by a series of operations in which the user touches and drags on the touch panel, and four-highlight display of the selection line and list creation are performed. On the other hand, in the second embodiment, even before the user starts the drag operation, the selected line is determined at the point of touch, and the selected line is highlighted and a list is created.

  However, when the selected line has not been confirmed, highlighting or list display of the selected line is not constant, and if the user releases his hand before confirmation, it is determined that there is no need to see it and it is erased. When the user's touch continues for a predetermined time or more, the current selection line is confirmed, and the highlight display or list display of the selection line is left even after the user stops touching.

<B-2. Operation>
10, 11, and 12 show display examples of the display unit 7 in the map drawing system 102 of the second embodiment. In the example of FIG. 10, when the user touches a specific line on the touch panel in a state where the map is displayed on the touch panel, the selected line is determined before the user drags the line. Specifically, a line including a point touched by the user (selected point) is extracted, and a line obtained by extending the line in both directions by, for example, an equal distance is set as the selected line.

  Then, the selected line is highlighted and related information of points or sections along the selected line outside the display area is displayed as a list. In FIG. 10, the selection line is a line extended in either the upper or lower direction of the screen, and related information of points or sections along the selection line is displayed in a list for both directions.

  At this stage, it is assumed that a predetermined time has not elapsed since the user started touching, and the selected line is unconfirmed. When the user moves his / her finger to a different line, the newly touched line is updated as the selected line. FIG. 11 shows a state where the user has moved his / her finger to the left of the screen from the state of FIG. 10 and touched another line. The line newly touched by the user becomes the selection line, and the list display is updated based on the new selection line.

  Next, when the finger touched by the user is dragged in any direction on the selection line, the selection line is updated according to the drag direction. In other words, the selection line before dragging is an extension of the line that includes the selection point in either direction, but the selection line after dragging is updated to an extension of the line that includes the selection point in the drag direction. The

  FIG. 12 shows a state where the user has dragged the line upward from the state of FIG. As a result, the selected line is updated to an extension of the line including the selected point in the upward direction. That is, the part which extended the line containing a selection point downward is excluded from a selection line. Then, highlight display and list display are performed for the updated selected line. As a result, the list display of the related information in the downward direction is deleted.

  It should be noted that the distance of the point of the related information displayed in the list may be changed according to the distance that the user drags the selection line. That is, as the drag distance is longer, the related information of points or sections farther from the reference point is displayed in a list. FIG. 12 shows a state in which related information of a distance far from the reference point is displayed in a list as a result of the user tracing the selection line upward.

  The operation of the map drawing system 102 that realizes the map display shown in FIGS. 10, 11, and 12 will be described with reference to the flowchart of FIG. Steps S21 and S22 are the same as steps S1 and S2 in FIG.

  If it is determined in step S22 that the user is touching the touch panel, a selection line is extracted based on the touch coordinates (step S23). If the drag operation has not been performed yet, the selected point is identified from the touch coordinates, and the line section including the selected point is extracted as the selected section. The selected section extracted here is a section having a predetermined length of the line including the selected point. A selection line is obtained by extending the extracted selection section in any direction.

  Next, it is determined whether or not a predetermined time has elapsed since the start of touching (step S24). If the predetermined time has elapsed, the selected line is determined in step S25 and the process proceeds to step S26. If the predetermined time has not elapsed, the process proceeds to step S26.

  Steps S26 to S28 are the same as steps S7 to S9 in FIG.

  After step S28, it is determined whether or not the map display is finished (step S29). If the map display is to be continued, the process returns to step S21 to display the map. If the touch continues (Yes in step S22), the selected line is extracted based on the touch coordinates (step S23). Here, since the selection line has already been determined in the previous step S23, the selection line is updated based on the new touch coordinates. Specifically, when the user is performing a drag operation, a line section on the map that matches or is close to the path of the drag operation is acquired from the map DB 12 and set as a selected section. Then, the selection line is updated with the selection section extended in the drag direction as a new selection line.

  Alternatively, when the user touches one line and then drags a finger to another line, the selection point is updated from the touch coordinates after dragging, and the selection line is updated based on the updated selection point. That is, a line section having a predetermined length including the updated selected point is extracted as a selected section, and a line obtained by extending the extracted selected section in any direction is used as a selected line.

  If it is determined in step S22 that the user is not touching, it is determined whether or not the selected line is confirmed (step S30). If the selected line is confirmed, the process proceeds to step S26. That is, when the user continues to touch the same position on the touch panel for a predetermined time or longer, the selected line is confirmed, and even if the user subsequently lifts his / her finger, the highlight display and list display of the selected line are continuously displayed. Is done.

  If the selected line is not confirmed in step S30, the process proceeds to step S29 to determine whether or not the map display is finished. In this case, since highlight drawing of the selected line (step S26) and point list creation (step S28) are not performed, highlight display and list display of the selected line are not performed.

<B-3. Modification>
In the above description, it is assumed that there is one line passing through the selected point. However, when the selected point is an intersection or a branch point, there are a plurality of lines passing through the selected point. Examples of map display in that case are shown in FIGS.

  FIG. 14 shows a state where the user touches the intersection. In this case, there are a road that passes through the intersection in the vertical direction of the screen and a road that passes in the left-right direction, and those that are extended in both directions are used as selection lines. Here, a road that extends in the up and down direction is defined as a first selection line, and a road that extends in the left and right direction is defined as a second selection line.

  Then, the first and second selection lines are highlighted, and related information of points or sections along the first and second selection lines outside the display area is displayed as a list.

  If the finger touched by the user is dragged rightward on the second selection line from the state shown in FIG. 14, the selection line is updated according to this operation. That is, the first selection line is excluded from the selection line, and only the second selection line that extends rightward from the selection point is updated as the selection line. As a result, only the updated selection line is highlighted, and a list of related information of points or sections outside the display area along the updated selection line is displayed (FIG. 15).

  Even if the selected point is not an intersection or a branch point, the selected line cannot be uniquely determined when the scale of the map is small and the place touched by the user overlaps a plurality of lines. Also in such a case, first, a plurality of selection line candidates that are assumed may be highlighted, and a screen that allows the user to select which candidate is the selection line may be displayed. In this case, the drawing unit 6 operates as a candidate presenting unit that presents selection line candidates to the user. When presenting selection line candidates, a list of related information of each selection line candidate may be displayed. This modification can also be applied to the first embodiment.

<B-4. Effect>
In the map drawing system 102 according to the second embodiment, the drawing unit 6 displays a list of related information created for a selection line determined based on a touch operation in which the touch time on the touch panel is equal to or longer than a predetermined time. Draw after the touch operation. That is, only the selection line determined by the touch operation with the touch time longer than the predetermined time can be displayed only after the touch is completed, so that only the list display of the selection line according to the user's intention can be performed.

  In addition, when the touch position includes points on a plurality of lines, the drawing unit 6 operates as a candidate presenting unit that presents any of the plurality of lines to the user as a selection line candidate. Therefore, for example, even when the user touches a plurality of lines at the same time, it is possible to determine a selection line that meets the user's intention.

  In addition, when the selected point is an intersection, a plurality of road sections constituting the intersection are set as the selected section, so that a plurality of roads constituting the intersection are selected lines, and a list of related information is displayed for each of the selected lines. It can be carried out.

<C. Embodiment 3>
<C-1. Configuration>
FIG. 16 is a block diagram illustrating a configuration of the map drawing system 103 according to the third embodiment. The map drawing system 103 is different from the map drawing system 101 according to the first embodiment in that the map drawing system 103 includes a planned travel route acquisition unit 8 that acquires a travel route of the vehicle.

  The scheduled travel route acquisition unit 8 acquires information on the planned travel route when the destination is set by the user and the planned travel route exists. Alternatively, the planned travel route of the vehicle may be automatically predicted from the travel route of the vehicle so far. The planned travel route acquisition unit 8 is realized by a CPU (Central Processing Unit) that executes a program stored in a memory such as a RAM (Random Access Memory).

  The line selection unit 2 determines a selection line based on the touch position of the user on the touch panel. That is, the section (selected section) of the line on the map selected by the user is acquired from the locus of the drag operation. Specifically, a line segment on the map that coincides with or is close to the trajectory of the drag operation is acquired from the map DB 12 as a selected segment. Then, an extension of the selected section in the drag direction is determined as the selection line. However, when the selected section is included in the planned travel route, the planned travel route is set as the selection line.

  The related information acquisition unit 3 acquires information on the selected line from the line selection unit 2 and acquires related information associated with the list creation location of the selected line outside the display area. If the selected line is not a planned travel route, the related information acquisition unit 3 uses the feature or traffic jam location on the selected line as a list creation location, and acquires related information from the feature DB 11 or traffic information as in the first embodiment. To do. In addition, when the selected line is a planned travel route, the related information acquisition unit 3 also uses the intersection on the planned travel route as a list creation location, and uses the travel direction information along the planned travel route at the intersection as the planned travel route. Obtained as related information from the obtaining unit 8.

<C-2. Operation>
17 and 18 show map display examples when the planned travel route is a selection line. FIG. 17 is a display example of a map around the vehicle position, and shows a state in which the already determined scheduled travel route is superimposed on the map with a dotted line. Here, the scheduled travel route is a route in which the current travel road is turned left at the A intersection 600 meters ahead.

  In the state of FIG. 17, when the user drags on the touch panel in the straight direction from the front of the current traveling road, the line selection unit 2 determines the selected line. In the first embodiment, the route that travels straight along the A intersection from the current traveling road and becomes a selection line becomes the selection line. In the third embodiment, the section selected by the user dragging is included in the planned traveling route. The scheduled travel route becomes the selected line.

  When the planned travel route becomes a selection line, the related information acquisition unit 3 uses the intersection on the planned travel route as a list creation location, and acquires information on the traveling direction along the planned travel route at the intersection as related information. In addition, the intersection related information includes information on the intersection name, the distance from the reference point, and the direction from the reference point.

  A list showing the traveling direction of the intersection along the planned travel route is created in the list creation unit 4, and the list is superimposed and drawn on the map by the drawing unit 6, whereby the display shown in FIG. 18 is made on the display unit 7. . By this list display, the user can grasp the scheduled travel route outside the display area.

  Next, the operation of the map drawing system 103 for realizing the map display shown in FIG. 18 will be described along the flowchart of FIG. Steps S41 and 42 are the same as steps S1 and S2 in FIG.

  If it is determined in step S42 that the user is touching the touch panel, the line selection unit 2 acquires a line segment (selected segment) on the map selected by the user from the locus of the drag operation. Specifically, a line segment on the map that coincides with or is close to the trajectory of the drag operation is acquired from the map DB 12 as a selected segment. Then, it is determined whether or not the selected section is included in the planned travel route (step S43).

  When the selected section is included in the planned travel route, the planned travel route is set as the selection line (step S44), and the process proceeds to step S46. On the other hand, if the selected section is not included in the planned travel route, the selected line is determined based on the touch coordinates (step S45), and the process proceeds to step S46. That is, a selection line is obtained by extending the selected section in the drag direction.

  Steps S46-S53 are the same as steps S4-S11 in FIG. However, when the planned travel route is used as the selection line, in the related information acquisition process in step S50, the related information acquisition unit 3 uses the intersection on the planned travel route as a list creation location, and follows the planned travel route at the intersection. Information including the traveling direction is acquired as related information from the planned traveling route acquisition unit 8.

<C-3. Effect>
The map drawing system 103 according to the third embodiment includes a planned travel route acquisition unit 8 that acquires a planned travel route of the vehicle in addition to the configuration of the map drawing system 101 of the first embodiment, and the selected section is the planned travel route. The line selection unit 2 uses the planned travel route as the selected line, and the related information acquisition unit 3 uses the intersection on the planned travel route as a list creation location, and provides information on the direction of travel along the planned travel route at the intersection. Obtained as related information. Therefore, the user can grasp the scheduled travel route outside the display area.

  It should be noted that the present invention can be freely combined with each other within the scope of the invention, and each embodiment can be appropriately modified or omitted.

  DESCRIPTION OF SYMBOLS 1 Input part, 2 line selection part, 3 related information acquisition part, 4 list creation part, 5 map data acquisition part, 6 drawing part, 7 display part, 8 planned travel route acquisition part, 11 feature database, 12 map database, 101, 102, 103 Map drawing system.

Claims (18)

A map data acquisition unit for acquiring map data;
A drawing unit for drawing a map in a display area of the display unit based on the map data,
The drawing unit superimposes a list of related information related to a portion outside the display area of a selection line selected from the lines of the map extending inside and outside the display area on the map without scrolling the map. Drawing in the display area;
Map drawing system. A line selection unit for selecting the selection line from the lines of the map extending inside and outside the display area;
A related information acquisition unit that acquires related information associated with a portion outside the display area of the selection line;
A list creation unit for creating a list of the related information;
The drawing unit draws the list created by the list creation unit on the display region by superimposing the list on the map without scrolling the map.
The map drawing system according to claim 1. The line selection unit is, as the selection line, a line that extends a selection section that passes through a selection point on a map in the display area selected by the user in at least one direction,
The related information acquisition unit uses a point or section on the map outside the display area along the selection line as a list creation location, acquires the related information of the list creation location,
The list creation unit creates a list of the related information of the list creation location,
The map drawing system according to claim 2. The selection line is a line obtained by extending the selection section in the direction selected by the user.
The map drawing system according to claim 3. When the user selects the list creation location from the list, the drawing unit draws a map around the list creation location selected by the user,
The map drawing system according to claim 3 or 4. When the user selects the list creation location from the list, the drawing unit performs scroll drawing from the range currently displayed in the display area to the list creation location selected by the user.
The map drawing system according to claim 5. The display unit includes a touch panel,
The line selection unit determines the selection point based on a touch position on the touch panel;
The map drawing system according to any one of claims 3 to 6. The line selection unit determines the selection point based on a drag start position of the drag operation on the touch panel, and determines the selection interval based on the drag operation drag interval;
The map drawing system according to claim 7. The display unit includes a touch panel,
The line selection unit determines the selection point based on a drag start position of the drag operation on the touch panel, determines the selection section based on the drag section of the drag operation,
The selection line is a line obtained by extending the selection section in a direction based on a drag direction of the drag operation.
The map drawing system according to claim 4. The drawing unit draws the list created for the selection line determined based on a touch operation in which a touch time on the touch panel is equal to or longer than a predetermined time, even after the touch operation ends.
The map drawing system according to claim 7. The related information acquisition unit determines the list creation location based on the distance of the drag operation on the touch panel.
The map drawing system according to claim 8 or 9. The drawing unit performs scroll drawing of the list when an operation of dragging the list in the arrangement direction on the touch panel is performed.
The map drawing system according to any one of claims 7 to 11. The list creation location is a location having a predetermined type of attribute among points or sections on the map outside the display area along the selection line,
The related information acquisition unit changes the attribute of the list creation location when an operation of tracing the list in a direction orthogonal to the arrangement direction on the touch panel is performed.
The map drawing system according to any one of claims 7 to 12. When the touch position includes points on a plurality of lines, the touch position further includes a candidate presenting unit that presents one of the plurality of lines as a selection line candidate to the user,
The line selection unit selects the selection line candidate selected by the user from the selection line candidates as the selection line.
The map drawing system according to any one of claims 7 to 13. The drawing unit draws the selected line in a manner different from other lines;
The map drawing system according to any one of claims 1 to 14. The vehicle further includes a planned travel route acquisition unit that acquires the planned travel route of the vehicle
When the selected section is included in the planned travel route, the line selection unit sets the planned travel route as the selected line, and the related information acquisition unit sets an intersection on the planned travel route as the list creation location, Obtaining information on the direction of travel along the planned travel route at the intersection as the related information;
The map drawing system according to claim 9. The selected point is an intersection,
The selected section is a plurality of road sections constituting the intersection.
The map drawing system according to claim 3. Map data is acquired by the map data acquisition unit,
Draw a map in the display area of the display unit based on the map data by the drawing unit,
The drawing of the map by the drawing unit is performed without scrolling the map with a list of related information associated with a portion outside the display area of a selection line selected from the lines of the map extending inside and outside the display area. Drawing on the display area superimposed on a map,
Map drawing method.

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