JP5713716B2 - Navigation device - Google Patents

Description

  The present invention relates to a navigation device that displays a map in which a peripheral area including a right / left turn point of a road that is a guide target point is enlarged.

  Some conventional navigation apparatuses have a function of displaying a map in which a peripheral area including a right-left turn point is enlarged when a right-left turn point on a guide route is approached by a predetermined distance.

  FIG. 1 is a diagram showing an example of an enlarged guide map of a guide route including a conventional right / left turn point. A display monitor screen 100 is divided into two screens, one being a wide area map screen 101 and the other being a wide area map. An enlarged guide map area 102 is formed by enlarging a part of the screen 101. In the example of FIGS. 1A and 1B, the host vehicle 104 approaches within a predetermined distance from the intersection 103 that is a right / left turn point, and the surrounding area including the intersection 103 is enlarged and displayed in the enlarged guide map area 102. Shows the case. As shown in FIG. 1A, conventionally, the intersection 103 is arranged near the center of the enlarged guide map area 102 in the horizontal direction (left-right direction) and the vertical direction (vertical direction). In addition, a display element 105 describing information about the intersection 103 (for example, lane information) is arranged near the center in the horizontal direction of the enlarged guide map area 102 regardless of the position of the intersection 103.

  In addition, for example, in the navigation device described in Patent Document 1, if the traveling direction of the own vehicle is any one of the straight traveling direction, the right diagonally upward direction, and the diagonally left upward direction, If an intersection is displayed at the center and the direction of travel of the vehicle is a right turn or diagonally downward to the right, the intersection is displayed to the left of the horizontal direction in the display area of the enlarged guide map, and the travel direction is a left turn or diagonally downward left If it is a direction, an intersection is displayed on the right side of the display area of the enlarged guide map in the horizontal direction. As a result, the map area in the traveling direction is displayed in a wide map.

JP 2008-209359 A

Conventionally, as shown in FIGS. 1 (a) and 1 (b), an enlarged guide map of a peripheral area including a right / left turn point has been displayed. Therefore, in the enlarged guide map area 102, the host vehicle passes an intersection 103. There was a problem that the space in the direction of travel after turning left and right was narrow, and it was difficult to see ahead.
On the other hand, in the conventional technique represented by Patent Document 1, an intersection (entrance link intersection, exit link intersection) where a circle with a predetermined radius intersects the entrance link and the exit link around the focused intersection is calculated. The direction connecting the intersection and the exit link is defined as the approach direction, the direction connecting the intersection and the exit link intersection is defined as the exit direction, and the traveling direction at the intersection is determined based on the angle difference between the approach direction and the exit direction. The arrangement position of the intersection 103 in the enlarged guide map area 102 is determined based on the traveling direction at the intersection.
However, when the guidance route is largely bent in the horizontal direction after passing through the intersection 103, the map area in the traveling direction along the guidance route cannot always be displayed widely only by the traveling direction at the intersection 103.
For example, as shown in FIG. 1B, when the traveling direction at the intersection 103 is diagonally upward to the left, and the guide route bends greatly in the lateral direction after passing through the intersection 103, the traveling direction of the host vehicle 104 is predicted. In view of the above, in the enlarged guide map area 102, the intersection 103 needs to be arranged so that the space in the direction in which the guide route bends is widened. However, in Patent Document 1, the intersection 103 is arranged at the center in the horizontal direction regardless of the prospect of the traveling direction of the host vehicle 104.

In addition, the display element 105 is additionally arranged near the center in the horizontal direction of the screen of the enlarged guide map area 102 so as to point to the right or left turn point on the map regardless of the position of the intersection 103. In some cases, the display is shifted from 103.
If the display element 105 is displayed so as to overlap the intersection 103, it becomes difficult for the driver to visually recognize the intersection 103. When there is no information to be presented on the display element 105, an arrangement space for the display element 105 in the enlarged guide map area 102 is vacant, resulting in a useless display space.
For example, as shown in FIG. 1, when the lane information at the intersection 103 is described in the display element 105, if the display element 105 is displayed shifted from the intersection 103, the contents of the display element 105 and the intersection 103 are displayed. It becomes difficult to take correspondence with the lane.

  The present invention has been made in order to solve the above-described problems. In the guide map in which the peripheral area including the guide target point on the guide route is enlarged, the traveling direction along the guide route following the guide target point is provided. An object of the present invention is to obtain a navigation device that can widely display the map area.

The navigation device according to the present invention is a first guide route connecting a predetermined point before the guide target point on the guide route and the guide target point, and a guide route following the guide target point. a navigation apparatus including a display output section for displaying the guidance diagram displaying area enlarged guide map map region containing second guide path connected to the guide route, the display output section, the second guide route guidance By arranging the map area including the first guide route closer to the display area opposite to the ridge line intersecting the second guide route when intersecting the ridge line defining the boundary of the figure display region , A map area including one guide route and a second guide route is displayed in the guide map display region.

  According to the present invention, in the guide map in which the peripheral area including the guide target point on the guide route is enlarged, the map area in the traveling direction along the guide route following the guide target point can be displayed widely. is there.

It is a figure which shows an example of the enlarged guide map of the guidance route containing the conventional right-left turn point. It is a block diagram which shows the structure of the navigation apparatus by Embodiment 1 of this invention. 4 is a flowchart showing a flow of processing for creating an enlarged guide map by the navigation device of the first embodiment. It is a figure which shows the example of the area | region containing a right-left turn point and a guidance route. It is a figure which shows the example of the screen structure of a display output part. It is a figure for demonstrating arrangement | positioning to the enlarged guide map area of the area | region containing a right-left turn point and a guidance route. It is a figure which shows the example of arrangement | positioning to the enlarged guide map area of the area | region containing a right-left turn point and a guidance route. It is a figure which shows the example of the positional relationship of the guide route following the right-left turn point and the ridgeline of an enlarged guide map area. It is a figure which shows another example of the positional relationship of the guide route and the ridgeline of an enlarged guide map area which follow after a right-left turn point. It is a figure which shows the case where adjustment of the arrangement position in the enlarged guide map area of the area | region containing a right-left turn point and a guidance route is not performed. It is a figure which shows the reference | standard (right side) of the position adjustment in the enlarged guide map area of the area | region containing a right-left turn point and a guidance route. It is a figure which shows the case where the arrangement position in the enlarged guide map area of the area | region containing a right-left turn point and a guidance route is adjusted to the right side. It is a figure which shows the case where an arrangement position is further adjusted from a reference position. It is a figure which shows the reference | standard (left side) of the position adjustment in the enlarged guide map area of the area | region containing a right-left turn point and a guidance route. It is a figure which shows the example of arrangement | positioning of the display element in which the information of the right-left turn point P2 was described. It is a figure which shows another example of arrangement | positioning of the display element in which the information of the right-left turn point P2 was described. It is a block diagram which shows the structure of the navigation apparatus by Embodiment 2 of this invention. 10 is a flowchart illustrating a flow of processing for creating an enlarged guide map by the navigation device according to the second embodiment. It is a figure which shows the example of the area | region where the guidance path | route from the previous right-left turn point to the next right-left turn point is included. It is a figure for demonstrating arrangement | positioning to the expansion guide map area of the area | region containing the guidance route from the previous right-left turn point to the next right-left turn point. It is a figure which shows the example of arrangement | positioning to the expansion guide map area of the area | region containing the guidance route from the previous right-left turn point to the next right-left turn point. It is a figure which shows another example of arrangement | positioning to the expansion guide map area of the area | region containing the guidance route from the previous right-left turn point to the next right-left turn point. It is a figure which shows the example of the area | region containing the right-and-left turn point and guidance route in Embodiment 3. FIG. It is a figure for demonstrating arrangement | positioning to the enlarged guide map area of the area | region containing the right-and-left turn point and guide route in Embodiment 3. FIG. It is a figure which shows the example of the area | region where the guidance path | route from the previous right-left turn point in Embodiment 3 to the next right-left turn point is included. It is a figure for demonstrating arrangement | positioning to the expansion guide map area of the area | region containing the guidance path | route from the front right-left turn point to the next right-left turn point in Embodiment 3. FIG.

Embodiment 1 FIG.
FIG. 2 is a block diagram showing the configuration of the navigation device according to Embodiment 1 of the present invention. In FIG. 2, the navigation device of the first embodiment includes a route search unit 1, a map database 2, a guidance data generation unit 3, a guidance map generation unit 4, and a display output unit 5.
The route search unit 1 reads out the current position measured based on a signal received from a GPS (Global Positioning System) satellite by a position measurement unit (not shown), a destination inputted from the outside by a driver, and the map database 2. It is a component that searches for a guidance route based on the map data and detects a guidance target point on the guidance route.

The map database 2 is a database in which map data used for map display in navigation processing is registered. The hard disk device mounted on the navigation device according to the first embodiment or an external storage medium that can be played back by a storage media playback device. Etc. are built.
Based on the map data read from the map database 2 and the guidance route supplied from the route search unit 1, the guidance data generation unit 3 generates a guidance target point such as a right or left turn point of a road on the guidance route, It is a structure part which produces | generates the data for guidance which show the exit road from the right-and-left turn point.

  The guide map generation unit 4 is a component that generates guide map data corresponding to the guide target point indicated by the guide data based on the guide data generated by the guide data generation unit 3. As the functional configuration, an area extraction unit 6, a position determination unit 7, an intersection determination unit 8, a display position adjustment unit 9, and an arrangement unit 10 are provided.

The display output unit 5 is a component that displays the guide map data generated by the guide map generation unit 4 on the screen. The display output unit 5 divides the display screen into two screens, one screen is used as a wide area map display screen, and the other screen is an enlarged guide in which a part of the area of the wide area map screen is enlarged. It is a figure area. For example, when the vehicle approaches a guidance target point on the guidance route, the display output unit 5 displays an enlarged guide map around the guidance target point in the enlarged guide map area.
As the display output unit 5, for example, a monitor such as a liquid crystal of a navigation device mounted on a vehicle may be used, but a monitor device provided separately from the navigation device may be used. Further, the output screen may not be two screens, but a wide area map or an enlarged guide map may be displayed on one screen.

The area extraction unit 6 determines from the guidance route and the surrounding map area to a point (hereinafter referred to as a feature point) a predetermined distance from the guidance target point such as a right or left turn point on the guidance route and the guidance target point. This is a component that extracts an area including the guide route, and extracts a minimum region including the guide route from the feature point to the guide target point.
The position determination unit 7 is a component that arranges the region extracted by the region extraction unit 6 in the enlarged guide map area, and the region extracted by the region extraction unit 6 is displayed as large as possible in the enlarged guide map area. In this way, the image data of the area is arranged in an enlarged and reduced manner.
The intersection determination unit 8 extracts a route that follows the guide target point in the area arranged in the enlarged guide map area by the position determination unit 7, and the guide route that follows the guide target point is the one in the enlarged guide map area. It is a structure part which determines whether it intersects with a ridgeline.

The display position adjustment unit 9 adjusts the position of the area arranged in the enlarged guide map area to the left or right when the guide route following the guide target point intersects with the left or right ridge line of the enlarged guide map area. It is the component which performs.
The arrangement unit 10 is a component that arranges a display element in which information about a guidance target point on the guidance route is described in an enlarged guide map area, and the display element is located above (directly above) the guide target point in the enlarged guide map area. Place.

  The route search unit 1, the guidance data generation unit 3, the guidance map generation unit 4, the region extraction unit 6, the position determination unit 7, the intersection determination unit 8, the display position adjustment unit 9, and the arrangement unit 10 illustrated in FIG. Can be realized on the computer as specific means in which hardware and software cooperate by causing the computer to execute a navigation processing program according to the gist of the present invention. That is, the above navigation processing program is a program for causing the computer to function as the navigation apparatus of the present invention. The route search unit 1, the guidance data generation unit 3, the guide map generation unit 4, the region extraction unit 6, It has a program module for realizing each function of the position determination unit 7, the intersection determination unit 8, the display position adjustment unit 9, and the arrangement unit 10. The map database 2 is constructed on a storage device mounted on the computer or a storage area of an external storage medium readable by the computer.

Next, the operation will be described.
FIG. 3 is a flowchart showing a flow of processing for creating an enlarged guide map of an area including a right / left turn point by the navigation device of the first embodiment. An outline of the process for creating an enlarged guide map when the guide target point is a right / left turn point will be described with reference to FIG.
First, as pre-processing for creating an enlarged guide map, the route search unit 1 reads the current position of the vehicle measured by a position measurement unit (not shown), the position of a destination point input from the outside, and the map database 2. A guide route is searched based on the map data.
Next, the guidance data generation unit 3 generates guidance data for guiding the guidance route based on the guidance route searched by the route search unit 1 and the map data read from the map database 2.

  The area extraction unit 6 of the guide map generation unit 4 includes a current position of the vehicle measured by a position measurement unit (not shown), guidance data generated by the guidance data generation unit 3, and a guidance target point in the guidance data. Based on the position data of the right and left turn points, a minimum region including the guide route from the feature point to the right and left turn point is extracted from the guide route and the surrounding map region (step ST1). Next, the position determination unit 7 arranges the region extracted by the region extraction unit 6 in an enlarged or reduced manner so that the region is displayed as large as possible in the enlarged guide map area (step ST2).

Next, the intersection determination unit 8 extracts a guide route that follows the right and left turn points in the area arranged in the enlarged guide map area by the position determination unit 7 (step ST3).
Subsequently, the intersection determination unit 8 determines whether or not the extracted guide route after the right or left turn point intersects the left or right ridge line of the enlarged guide map area (step ST4).
Here, if the guide route following the right / left turn point does not intersect with the ridge line on the left side or the right side of the enlarged guide map area (step ST4; NO), the placement unit 10 describes the information about the right / left turn point. A display element is arrange | positioned above the left-right turn point of an enlarged guide map area (step ST5).

  On the other hand, when it is determined by the intersection determination unit 8 that the guide route following the right-left turn point intersects the left or right ridge line of the enlarged guide map area (step ST4; YES), the display position adjustment unit 9 If the guide route that follows the left turn point intersects the ridge line on the left side of the enlarged guide map area, adjust the position of the above area in the enlarged guide map area to the right, and the guide route that follows the right and left turn point If it intersects with the ridge line on the right side of the enlarged guide map area, adjustment is made to shift the arrangement position of the area in the enlarged guide map area to the left (step ST6). Then, it progresses to step ST5 and complete | finishes a process.

(1) Extraction of region including guide route from feature point to right / left turn point FIG. 4 is a diagram illustrating an example of a region including a right / left turn point and a guide route, extracted by the process in step ST1 of FIG. The details of the area to be displayed are shown. In FIG. 4, the characteristic point P1 is a point 150 m away from the right / left turn point P2 along the guide route R, that is, 150 m before the right / left turn point P2.
First, the region extraction unit 6 defines the orientation of the map so that the heading up is performed when the host vehicle M reaches the feature point P1. Next, as shown in FIGS. 4A to 4D, the area extraction unit 6 maps the minimum area A including the feature point P1, the right / left turn point P2, and the guide route R between these points. Extract from region.

In the examples of FIGS. 4A, 4B, and 4D, the guide route R between the feature point P1 and the right / left turn point P2 is substantially linear, so the feature point P1 and the right / left turn A rectangle having the point P2 on the boundary is defined as a region A. Thereby, the area | region A of the minimum area can be obtained. Note that white circles in FIG. 4 are nodes between links constituting the guide route R.
In addition, as shown in FIG. 4C, when the guide route R between the feature point P1 and the right / left turn point P2 is significantly bent, for example, the feature point P1, the right / left turn point P2, and the guidance between these points. A rectangular area circumscribing the route R is defined as area A.

(2) Arrangement processing in enlarged guide map area FIG. 5 is a diagram showing an example of the screen configuration of the display output unit, and shows details of the screen configuration handled in the processing in step ST2 of FIG. The example shown in FIG. 5 shows a case where the surrounding area of the guidance target point is displayed in an enlarged guide map in order to guide the guidance target point in detail, and the display screen 20 of the display output unit 5 is divided into two screens. One screen is a display screen 21 for a wide area map, and the other screen is an enlarged guide map area 22 in which a part of the area of the wide area map screen is enlarged.

  The position determination unit 7 sets the information arrangement area 23 in which the display element is arranged in the enlarged guide map area 22 in accordance with the presence or absence of the display element describing information (for example, intersection name, lane information, etc.) regarding the right / left turn point P2. Set. The information arrangement area 23 is extracted by the area extracting unit 6 in the enlarged guide map area 22 as virtually shown in FIGS. 5 (a-1), 5 (b-1), and 5 (c-1). It is provided so as to surround the enlarged guide map display area 24 for displaying the area A. The area A cannot be displayed in the information arrangement area 23.

FIG. 5 (a-1) shows a case where there is no information regarding the right / left turn point P2, and the information arrangement area 23 is set to be narrow, and in the actual display situation shown in FIG. Only the enlarged guide map display is displayed.
FIG. 5B-1 shows a case where there is only a part of information related to the right / left turn point P2 (for example, there is an intersection name but no lane information). In this case, the information arrangement area 23 is set with an area where a display element 25 in which a part of information (intersection name) regarding the right / left turn point P2 is described can be arranged, as shown in FIG. A display element 25 is displayed above the enlarged guide map display area 24.
FIG. 5 (c-1) shows a case where there is all information regarding the right / left turn point P <b> 2. In this case, the information arrangement area 23 is set in the widest area where the display elements 25a and 25b in which information about the right / left turn point P2 is respectively described can be arranged. As shown in FIG. Display elements 25 a and 25 b are displayed above the figure display area 24.

  FIG. 6 is a diagram for explaining the arrangement of the regions extracted by the region extraction unit in the enlarged guide map area. For example, when the area A shown in FIG. 6A is extracted, the position determination unit 7 divides the enlarged guide map area 22 into left and right equal parts, and the lower ridge line of the enlarged guide map display area 24. Let the intersection point with the straight line a2 along the line be the reference point F1. Further, the position determination unit 7 has a two-dimensional coordinate in the enlarged guide map area 22 shown in FIG. 6B with the horizontal direction (left-right direction) as the X-axis direction and the vertical direction (up-down direction) as the Y-axis direction. Set the system.

  When the information determination area 23 and the enlarged guide map display area 24 are set as described above, the position determination unit 7 does not protrude from the enlarged guide map display area 24 and has an area that is not shown in FIG. The Y coordinate of the feature point P1 is the same as the Y coordinate of the reference point F1, and the X coordinate of the feature point P1 is at least close to the reference point F1. To do.

FIG. 7 is a diagram illustrating an arrangement example of the area A in the enlarged guide map area. FIG. 7A shows a case where the region A can be arranged at a position where the feature point P1 and the reference point F1 coincide.
Further, in the example shown in FIG. 7B, when the area A is enlarged so that the area of the area A becomes the maximum in the enlarged guide map display area 24, the right / left turn point P2 protrudes from the enlarged guide map display area 24. The characteristic point P1 is shifted to the left with respect to the reference point F1.
Further, in the example shown in FIG. 7C, when the area A is enlarged so that the area of the area A is maximized in the enlarged guide map display area 24, the right / left turn point P2 greatly protrudes from the enlarged guide map display area 24. The case where the characteristic point P1 is further shifted to the left with respect to the reference point F1 is shown. In this case, the characteristic point P1 is shifted to the lower left vertex position of the rectangle of the enlarged guide map display area 24.

(3) Judgment of the ridgeline of the enlarged guide map area where the guide route following the right / left turn point P2 and the subsequent intersections FIG. 8 shows an example of the positional relationship between the guide route following the right / left turn point and the ridge line of the enlarged guide map area. FIG. 8 is a diagram, and details of processing contents of steps ST3 and ST4 of FIG. 3 will be described with reference to FIG. FIG. 8A shows a case where the guide route R following the right / left turn point P2 intersects the ridge line 25a on the upper side of the enlarged guide map area 22 at the intersection C1. FIG. 8B shows a case where the guide route R following the right / left turn point P2 intersects the lower ridge line 25b of the enlarged guide map area 22 at the intersection C2. Further, in the example of FIG. 8C, the destination point G26 of the guide route R is in the enlarged guide map display area 24, and the guide route R following the right / left turn point P2 intersects the ridgeline of the enlarged guide map area 22 This is the case.
The intersection determination unit 8 determines whether or not the guide route R following the right and left turn point P2 crosses the left or right ridge line of the enlarged guide map area 22, and displays the determination result shown in FIG. The position adjustment unit 9 is notified that the guide route R does not intersect with the left or right ridge line.

  FIG. 9 is a diagram illustrating another example of the positional relationship between the guide route that follows the turning point and the ridgeline of the enlarged guide map area. The example of FIG. 9A shows a case where the guide route R following the right / left turn point P2 intersects the ridge line 25c on the left side of the enlarged guide map area 22 at the intersection C3. FIG. 9B shows a case where the guide route R following the right / left turn point P2 intersects the ridge line 25d on the right side of the enlarged guide map area 22 at the intersection C4. In these cases, the intersection determination unit 8 notifies the display position adjustment unit 9 that the guide route R intersects the left or right ridge lines 25c and 25d.

(4) Display position adjustment processing (step ST6 in FIG. 3)
When the display position adjustment unit 9 receives notification from the intersection determination unit 8 that the guide route R following the right / left turn point P2 does not intersect with the left or right ridge lines 25c and 25d of the enlarged guide map area 22, the display position adjustment unit 9 expands. The arrangement position of the area A in the guide map display area 24 is not adjusted.
FIG. 10 is a diagram illustrating a case where the arrangement position of the region A is not adjusted.
In FIG. 10 (a-1), since the guide route R following the right and left turn point P2 intersects the ridge line 25a on the upper side of the enlarged guide map area 22 at the intersection C1, the movement of the region A in the X direction is Instead, the area A is displayed as it is in the enlarged guide map area 22 as shown in FIG.
In FIG. 10 (b-1), the guide route R following the right and left turn point P2 intersects the lower ridge line 25b at the lower side of the enlarged guide map area 22 at the intersection C2. The area A is displayed as it is in the enlarged guide map area 22 as shown in FIG.
When the guide route R does not intersect with the ridge line on the left or right side of the enlarged guide map area 22, adjusting the position of the region A in the X direction results in a biased arrangement, giving the driver a sense of incongruity. For this reason, in such a case, it is not necessary to shift the position of the region A. For example, at a crossing where the vehicle goes straight but needs guidance, the route is almost straight. At this time, it is easier to see the route if the intersection is arranged in the center of the enlarged guide map area 22 in the X direction.
Further, in FIG. 10 (c-1), the destination point G 26 of the guide route R is in the enlarged guide map display area 24, and the guide route R following the right / left turn point P 2 does not intersect the ridge line of the enlarged guide map area 22. Therefore, the region A is not moved in the X direction, and the region A is displayed as it is in the enlarged guide map area 22 as shown in FIG.

When the display position adjustment unit 9 receives a notification from the intersection determination unit 8 that the guide route R following the right / left turn point P2 and beyond intersects the left ridge line of the enlarged guide map area 22, the enlarged guide map display region The adjustment is performed so that the arrangement position of the area A in 24 is shifted to the right.
FIG. 11 is a diagram showing a reference for position adjustment in the enlarged guide map area 22 of the area A, and shows a reference position for performing adjustment for shifting the arrangement position of the area A to the right side. As shown in FIG. 11, a position that is shifted to the right by a predetermined distance from a straight line a1 that passes through the reference point F1 and equally divides the enlarged guide map display area 24 left and right is defined as a reference position F2. The reference position F2 determines the distance so as to widely display the space to which the guide route R that follows the right and left turn point P2 and beyond.

FIG. 12 is a diagram illustrating a case where adjustment is performed without shifting the arrangement position of the region A in the enlarged guide map area 22 to the right side. As shown in FIG. 12A, when the guide route R following the right / left turn point P2 intersects the left ridge line 25c of the enlarged guide map area 22 at the intersection C3, the display position adjusting unit 9 As shown in (2), adjustment is performed so that the region A is shifted to the right side to the reference position F2.
At this time, if the area A does not protrude from the enlarged guide map display area 24, the display position adjustment unit 9 determines the arrangement of the area A at this position. Thereby, a display as shown in FIG.

FIG. 13 is a diagram illustrating a case where the arrangement position of the area A in the enlarged guide map area 22 is further adjusted from the reference position F2. As shown in FIG. 13 (a), when the guide route R following the right / left turn point P2 intersects the left ridge line 25c of the enlarged guide map area 22 at the intersection C3, the display position adjusting unit 9 As shown in (2), adjustment is performed to shift the region A to the right side to the reference position F2.
At this time, when the area A protrudes from the enlarged guide map display area 24 and overlaps with the information arrangement area 23 and the area B, the display position adjustment unit 9 protrudes from the enlarged guide map display area 24 as shown in FIG. The readjustment is performed so that the region A is shifted to the left side from the reference position F2 until it disappears.
If the area A does not protrude from the enlarged guide map display area 24 by this readjustment, the display position adjustment unit 9 determines the arrangement of the area A at this position. Thereby, a display as shown in FIG.

On the other hand, when the display position adjustment unit 9 receives a notification from the intersection determination unit 8 that the guide route R following the right / left turn point P2 and the right intersects the ridge line 25d on the right side of the enlarged guide map area 22, the display position adjustment unit 9 expands. Adjustment is performed to shift the position of the area A in the guide map display area 24 to the left.
FIG. 14 is a diagram showing a reference for position adjustment in the enlarged guide map area 22 of the area A, and shows a reference position when performing adjustment to shift the arrangement position of the area A to the left side. As shown in FIG. 14, a position that is shifted to the left by a predetermined distance from a straight line a1 that passes through the reference point F1 and equally divides the enlarged guide map display area 24 to the left and right is defined as a reference position F3. As in the case of the reference position F2, the reference position F3 determines the distance so as to widely display the space to which the guide route R following the right / left turn point P2 and beyond is directed.

When the guide route R following the right / left turn point P2 intersects the ridge line 25d on the right side of the enlarged guide map area 22, the display position adjustment unit 9 adjusts the position of the area A using the reference position F3.
Note that details of the adjustment for shifting the region A to the left are the same as those for shifting the region A to the right, and thus the description thereof is omitted.

(5) Arrangement of display elements (step ST5 in FIG. 3)
The arrangement | positioning part 10 arrange | positions the display element in which the information regarding the right / left turn point P2 was described directly above the right / left turn point P2.
FIG. 15 is a diagram illustrating an arrangement example of display elements in which information of the right / left turn point P2 is described, and shows a case where the display element 25 is arranged right above the right / left turn point P2.
When the arrangement position of the area A in the enlarged guide map display area 24 is determined by the processing described above, the arrangement unit 10 determines that the X coordinate of the center position of the display element 25 is the right / left turn point P2 as shown in FIG. The information is arranged in the information arrangement area 23 so as to coincide with the X coordinate value L1.
At this time, if the display element 25 does not protrude from the information arrangement area 23, the arrangement unit 10 determines the arrangement of the display element 25 at this position. Thereby, a display as shown in FIG.

FIG. 16 is a diagram illustrating another arrangement example of the display elements in which the information on the right / left turn point P2 is described, and shows a case where the display element 25 cannot be placed right above the right / left turn point P2.
In the example shown in FIG. 16A, when the position is adjusted so that the X coordinate of the center position of the display element 25 matches the X coordinate value L1 of the right / left turn point P2, the display element 25 protrudes from the information arrangement area 23. End up. In this case, as shown in FIG. 16B, the arrangement unit 10 determines the center position of the display element 25 from the X coordinate value L1 of the right / left turn point P2 until the display element 25 does not protrude from the information arrangement area 23. Rearrange to the left.
If the display element 25 does not protrude from the information display area 23 after shifting to the X coordinate value L2, the arrangement unit 10 determines the arrangement of the display element 25 at this position. As a result, a display as shown in FIG. Thereby, since it becomes easy to associate the information of the right / left turn point P2 and the information of the right / left turn point P2, an easy-to-understand display is possible.

As described above, according to the first embodiment, the guide map for generating the guide map data of the enlarged guide map of the predetermined area A including the route to the right / left turn point P2 that is the guide target point on the guide route R. A generation unit 4 and a display output unit 5 for displaying an enlarged guide map of a predetermined area A using the guide map data generated by the guide map generation unit 4 are provided. The guide map generation unit 4 includes a display output unit. Arrangement of the predetermined area A in the enlarged guide map display area 24 of the display output unit 5 so that the map area to which the guide route following the right / left turn point P2 is directed is displayed widely in the enlarged guide map display area 24 of FIG. Guide map data with a shifted position is generated. In particular, when the guide map generation unit 4 crosses the ridge line 25c or 25d that defines the boundary of the enlarged guide map area 22 of the display output unit 5 after the guide route R following the right / left turn point P2, the predetermined area A The guide map data of the enlarged guide map in which the arrangement position of is shifted to the opposite side of the ridge line intersecting the guide route R is generated.
With this configuration, in the guide map in which the peripheral area A including the right / left turn point P2, which is the guide target point on the guide route R, is enlarged, the traveling along the guide route R following the right / left turn point P2-1. The effect that the map area of a direction can be displayed widely is acquired.

  Further, according to the first embodiment, the guide map generation unit 4 arranges the display element 25 describing the information about the right / left turn point P2 in the enlarged guide map above the right / left turn point P2. Therefore, the effect that it is easy to visually recognize the display element 25 of the information related to the right / left turn point P2 is obtained.

Embodiment 2. FIG.
Embodiment 1 above shows a case where an area including a route connecting a point (feature point) a predetermined distance before the guidance target point on the guidance route and the guidance target point is displayed in the enlarged guide map area. In the second embodiment, a process for creating an enlarged guide map when the guide target points are further continuous will be described. In the following description, for ease of explanation, a case where the guidance target point is a right / left turn point will be described.

FIG. 17 is a block diagram showing a configuration of a navigation device according to Embodiment 2 of the present invention. In FIG. 17, the navigation device of the second embodiment includes a route search unit 1, a map database 2, a guidance data generation unit 3, a guidance map generation unit 4A, and a display output unit 5.
The guide map generation unit 4A generates an enlarged guide map for the guide route from the feature point to the first right / left turn point as in the first embodiment, and guides from the right / left turn point to the next right / left turn point. The route is a component that generates a new enlarged guide map with reference to the scale of the previous enlarged guide map. The configuration includes an area extraction unit 6A, a position determination unit 7A, an intersection determination unit 8, a display position adjustment unit 9, an arrangement unit 10, and a previous drawing scale storage unit 11. In FIG. 17, the same components as those in FIG.

The area extraction unit 6A extracts the area including the guide route from the feature point to the right / left turn point from the guide route and the surrounding map region, and continues to the right / left turn point. A component that extracts a region including a guide route between successive right and left turn points, and extracts a region including a guide route between successive right and left turn points with a minimum area.
The position determination unit 7A is a component that places the region extracted by the region extraction unit 6A in the enlarged guide map area, and the region extracted by the region extraction unit 6A is the previous enlarged guide map ( The image data of the area is enlarged and reduced so as to be displayed at a reduced scale of the enlarged guide map including the guide route from the feature point to the first turn point.
The previous diagram scale storage unit 11 is a storage unit that stores the scale of the previous enlarged guide map used in the position determination unit 7A. Each time the enlarged guide map is arranged in the enlarged guide map area by the position determination unit 7A. The scale is stored.

  The route search unit 1, the guidance data generation unit 3, the guidance map generation unit 4A, the region extraction unit 6A, the position determination unit 7A, the intersection determination unit 8, the display position adjustment unit 9, and the arrangement unit 10 illustrated in FIG. By causing a computer to execute a navigation processing program according to the gist of the present invention, it can be realized on the computer as specific means in which hardware and software cooperate. That is, the above navigation processing program is a program for causing the computer to function as the navigation apparatus of the present invention. The route search unit 1, the guidance data generation unit 3, the guide map generation unit 4A, the region extraction unit 6A, A program module for realizing the functions of the position determination unit 7A, the intersection determination unit 8, the display position adjustment unit 9, and the arrangement unit 10 is provided. The map database 2 is constructed on a storage device mounted on the computer or a storage area of an external storage medium readable by the computer.

Next, the operation will be described.
FIG. 18 is a flowchart illustrating a flow of processing for creating an enlarged guide map by the navigation device according to the second embodiment. The outline of the process for creating an enlarged guide map when the guide target point is a right / left turn point will be described with reference to FIG.
First, the route search unit 1 searches for a guide route based on the current position of the vehicle measured by a position measurement unit (not shown), the position of a destination point input from the outside, and the map data read from the map database 2. .
Next, the guidance data generation unit 3 generates guidance data for guiding the guidance route based on the guidance route searched by the route search unit 1 and the map data read from the map database 2.
Thereafter, the navigation device according to the second embodiment creates an enlarged guide map for an area including the guide route from the feature point to the first right / left turn point in the same manner as in the first embodiment. At this time, the position determination unit 7A of the guide map generation unit 4A stores the scale of the enlarged guide map in the previous map scale storage unit 11.

Subsequently, the area extraction unit 6A is configured to display the current position of the host vehicle measured by a position measurement unit (not shown), guidance data generated by the guidance data generation unit 3, and position data of right and left turn points in the guidance data. If the left and right turn points are determined to be continuous based on the above, the minimum area including the guide route from the previous right and left turn point to the next right and left turn point is extracted from the guide route and the surrounding map area. (Step ST1a).
The position determination unit 7A refers to the previous drawing scale storage unit 11 and enlarges or reduces the area extracted by the area extraction unit 6A so as to be the scale of the previous enlarged guide map, thereby forming an enlarged guide map area. Arrange (step ST2a).

Next, the intersection determination unit 8 extracts a guide route from the previous right / left turn point to the next right / left turn point in the area arranged in the enlarged guide map area by the position determination unit 7A (step ST3).
Subsequently, the intersection determination unit 8 determines whether or not the extracted guide route intersects the left or right ridge line of the enlarged guide map area (step ST4). Here, if the extracted guide route does not intersect with the ridge line on the left side or the right side of the enlarged guide map area (step ST4; NO), the arrangement unit 10 displays a display element in which information on the right / left turn point is described. Then, it is arranged above the right / left turn point in the enlarged guide map area (step ST5).

  On the other hand, when the intersection determination unit 8 determines that the guide route intersects the left or right ridge line of the enlarged guide map area (step ST4; YES), the display position adjustment unit 9 determines that the guide route is an enlarged guide. If it intersects with the ridge line on the left side of the map area, adjust the position of the area in the enlarged guide map area to the right, and if the guide route intersects with the ridge line on the right side of the magnified map map area, Adjustment is performed by shifting the arrangement position of the area in the guide map area to the left (step ST6). Then, it progresses to step ST5 and complete | finishes a process.

(1A) Extraction of a region including a guidance route from the previous right / left turn point to the next right / left turn point FIG. 19 shows an example of a region including a guidance route from the previous right / left turn point to the next right / left turn point. It is a figure shown, and the detail of the area | region extracted by the process of step ST1a of FIG. 18 is shown. In FIG. 19, the characteristic point P1 is a point 150 m away from the right / left turn point P2-1 along the route of the guide route, that is, 150m before the right / left turn point P2-1.
The area extraction unit 6A defines the direction of the map so that the heading up occurs when the vehicle M reaches the first right / left turn point P2-1 through the feature point P1. Next, as shown in FIGS. 19A and 19B, the region extracting unit 6A, as shown in FIG. 19A and FIG. 19B, the right and left turn point P2-1 where the vehicle M turns first and the right and left turn point P2 where the vehicle turns second time. The minimum area A1 including the guide route R between -2 is extracted from the map area.

Here, if the distance following the guide route R between the two right and left turn points is within a predetermined distance (for example, within 150 m) used when the feature point P1 is set, it is a continuous branch. judge.
In the examples of FIGS. 19A and 19B, the guide route R between the right and left turn points P2-1 and P2-2 is substantially linear, so the right and left turn point P2-1 (first branch point) ) And a right-left turn point P2-2 (second branch point) on the boundary line is defined as a region A1. Thereby, the area A1 having the minimum area is obtained. Note that white circles in FIG. 19 are nodes between links constituting the guide route R.

(2A) Arrangement Process in Enlarged Guide Map Area FIG. 20 is a diagram for explaining the arrangement of the area A1 extracted by the area extraction unit 6A in the enlarged guide map area. For example, when the area A1 shown in FIG. 20A is extracted, the position determination unit 7A causes the straight line a1 that equally divides the enlarged guide map area 22 to the left and right, and the ridge line below the enlarged guide map display area 24. Let the intersection point with the straight line a2 along the line be the reference point F1. Furthermore, the position determination unit 7A has a two-dimensional coordinate in which the horizontal direction (left-right direction) is the X-axis direction and the vertical direction (vertical direction) is the Y-axis direction in the enlarged guide map area 22 shown in FIG. Set the system.

  When the information determination area 23 and the enlarged guide map display area 24 are set as described above, the position determination unit 7A does not protrude from the enlarged guide map display area 24 and at least the previous time. The scale is enlarged or reduced to be as close as possible to the scale of the previous enlarged guide map below the scale of the enlarged guide map. That is, it is made to become a detailed scale rather than the last enlarged guide map which is an enlarged guide map of the area | region A containing the guidance route R from the feature point P1 to the right-left turn point P2-1.

  Further, the position determination unit 7A is arranged so that the Y coordinate of the right / left turn point P2-1 is the same as the Y coordinate of the reference point F1, and the X coordinate of the right / left turn point P2-1 is at least near the reference point F1. To do. That is, the area A1 is always arranged so as to contact the lower ridge line of the enlarged guide map display area 24.

FIG. 21 is a diagram showing an example of arrangement of the area A1 in the enlarged guide map area, and the area A1 is arranged at the same scale as the previous enlarged guide map at a position where the right / left turn point P2-1 coincides with the reference point F1. The case where it was possible is shown. FIG. 21A shows an enlarged guide map of the area A including the guide route R from the feature point P1 to the right / left turn point P2-1, which is the previous enlarged guide map. FIG. 21B shows an area A1 including a guide route R from the right / left turn point P2-1 to the right / left turn point P2-2.
When the area A1 shown in FIG. 21B is extracted, the position determination unit 7A enlarges or reduces the area A1 so that it becomes the scale of the previous enlarged guide map, and the Y coordinate of the right / left turn point P2-1 is The Y coordinate of the reference point F1 is the same as that of the reference point F1, and the X coordinate of the right / left turn point P2-1 is arranged at least near the reference point F1. Thereby, an arrangement position as shown in FIG. 21C is determined.

  FIG. 22 is a diagram showing another arrangement example of the area A1 in the enlarged guide map area, and the area at a position where the right / left turn point P2-1 and the reference point F1 do not coincide with each other at a smaller scale than the previous enlarged guide map. The case where A1 is arranged is shown. FIG. 22A shows an area A1 including a guide route R from a right / left turn point P2-1 to a right / left turn point P2-2. FIG. 22B shows an arrangement example of the area A including the guide route R from the feature point P1 to the right / left turn point P2-1 on the enlarged guide map display area 24, as shown in FIG. 22C. A magnified guide map is displayed.

  The position determination unit 7A refers to the scale of the previous enlarged guide map shown in FIG. 22 (b), and has the same scale as this scale so that the first right / left turn point P2-1 coincides with the reference point F1. The area A1 shown in FIG. 22A is arranged in the enlarged guide map display area 24. At this time, if the area A1 protrudes from the enlarged guide map display area 24, the position determination unit 7A reduces the area A1 so that the area A1 is within the enlarged guide map display area 24.

In the example of FIG. 22D, the area A1 protrudes from the enlarged guide map display area 24, and the right / left turn point 2-2 overlaps the information arrangement area 23 and the area A2.
Therefore, the position determination unit 7A reduces the area A1 in the left-right direction (X-axis direction) until the right / left turn point P2-2 is on the left ridge line of the enlarged guide map display area 24. In this way, as shown in FIG. 22E, the area A1 is arranged so as to be within the enlarged guide map display area 24.

As described above, according to the second embodiment, the guide map generation unit 4A includes a predetermined route including a route between the right / left turn point P2-1 on the guide route R and the right / left turn point P2-2 following the right / left turn point P2-2. As an enlarged guide map of the area A1, a guide map display of the display output unit 5 is displayed so that a map region to which a guide route following the right-left turn point P2-2 is directed is displayed widely in the guide map display region of the display output unit 5. Guide map data of an enlarged guide map is generated by shifting the arrangement position of the predetermined area A1 in the area.
By doing in this way, in the guide map which expanded the peripheral area including the continuous right and left turn points P2-1 and 2-2 on the road that is the guide target point, the guide route R that follows the right and left turn point P2-2. It is possible to display a wide map area in the traveling direction along the line.

Further, according to the second embodiment, the guide map generation unit 4A includes the predetermined area A1 including the route between the right / left turn point P2-1 on the guide route R and the right / left turn point P2-2 following the right / left turn point P2-2. In generating the guide map data of the enlarged guide map, the predetermined area A1 is enlarged or reduced so as to be the same scale as the enlarged guide map of the area A including the route to the right-left turn point P2-1.
By doing in this way, it can prevent that a scale changes suddenly from the enlarged guide map of the area | region A containing the path | route until it goes to the right-left turn point P2-1.

Embodiment 3 FIG.
In Embodiment 1 above, the map direction is defined so that the vehicle heads up when the vehicle reaches the feature point, and then the feature point, the right / left turn point, and the guide route between these points are included. In the third embodiment, the region is extracted, but the road link (inflow link to the guidance target point) connected to the guidance target point is perpendicular to the upper and lower ridge lines of the enlarged guide map display area. After defining the orientation of the map, extract the minimum area that includes the feature points, left and right turn points, and the guidance route between these points, and this minimum area is a criterion for equally dividing the enlarged guide map area to the left and right It arrange | positions in an enlarged guide map display area so that the road link connected to a guidance object point may become near line a1. Thereby, since the road link connected to the guidance target point is along the direction of the map, the right-left turn direction of the guidance target point is easily recognized in the enlarged guide map area.

Next, the operation will be described.
Since the third embodiment can be applied to the configurations of the first and second embodiments, a case where the third embodiment is applied to the configuration of the first embodiment will be described with reference to FIG. In the following description, for ease of explanation, a case where the guidance target point is a right / left turn point will be described. Also, the characteristic processing in the third embodiment will be mainly described, and the description of the same processing as in the first embodiment will be omitted.

(1) Extraction of region including guide route from feature point to right / left turn point FIG. 23 is a diagram illustrating an example of a region including a right / left turn point and a guide route, and FIG. 3 described in the first embodiment. The detail of the area | region extracted by the process equivalent to step ST1 is shown. In FIG. 23, the characteristic point P1 is a point 150 m away from the right / left turn point P2 along the guide route R, that is, 150 m before the right / left turn point P2.
First, the area extraction unit 6 is a road link (an inflow link to the right / left turn point P2) connected to the right / left turn point P2 among the road links constituting the guide route R when the host vehicle M reaches the feature point P1. The orientation of the map is defined so that R ′ is perpendicular to the upper and lower ridge lines of the enlarged guide map display area 22. That is, the road link connected to the guidance target point is made to follow the direction of the map.
Next, as shown in FIGS. 23 (a) to 23 (d), the area extraction unit 6 includes a minimum area A ′ including a feature point P1, a right / left turn point P2, and a guide route R between these points. Are extracted from the map area.

  In the examples of FIGS. 23 (a), 23 (b) and 23 (d), the guide route R between the feature point P1 and the right / left turn point P2 is substantially linear, so the feature point P1, right / left turn A rectangle in which the point P2 and the road link R ′ are on the boundary is defined as a region A ′. Thereby, a region A ′ having a minimum area can be obtained. Note that white circles in FIG. 23 are nodes between links constituting the guide route R. Further, as shown in FIG. 23C, when the guide route R between the feature point P1 and the right / left turn point P2 is greatly bent, for example, the guide route R between the feature point P1 and the right / left turn point P2 A circumscribed rectangular region is defined as a region A ′.

(2) Arrangement processing in the enlarged guide map area FIG. 24 is a diagram for explaining the arrangement of the area extracted by the area extraction unit in the enlarged guide map area, and FIG. 3 described in the first embodiment. The details of the screen configuration handled in the process in step ST2 of FIG. For example, when the area A ′ shown in FIG. 24A is extracted, the position determination unit 7 sets the reference line a1 ′ equally dividing the enlarged guide map area 22 to the left and right and the enlarged guide map display area 24. A straight line a2 is set along the lower ridge line.
Furthermore, in the enlarged guide map area 22 shown in FIG. 24B, the position determination unit 7 has two-dimensional coordinates in which the horizontal direction (left-right direction) is the X-axis direction and the vertical direction (vertical direction) is the Y-axis direction. Set the system.
Next, when the position determining unit 7 sets the information arrangement area 23 and the enlarged guide map display area 24 as described above, the area A ′ shown in FIG. 24A is not protruded from the enlarged guide map display area 24. Further, the area is enlarged or reduced so that the area becomes maximum, the Y coordinate of the characteristic point P1 is made the same as the Y coordinate of the straight line a2, and the road link R ′ connected to the right / left turn point P2 is close to the reference line a1 ′. Deploy. The subsequent processing is the same as the processing from step ST3 to step ST6 of FIG. 3 described in the first embodiment.

  Next, a case where the third embodiment is applied to the configuration of the second embodiment will be described with reference to FIG. Similar to the above description, the case where the guidance target point is a right / left turn point will be described. Also, the characteristic processing in the third embodiment will be mainly described, and the description of the same processing as in the second embodiment will be omitted.

(1A) Extraction of a region including a guidance route from the previous right / left turn point to the next right / left turn point FIG. 25 illustrates an example of a region including a guidance route from the previous right / left turn point to the next right / left turn point. It is a figure shown, and the detail of the area | region extracted by the process of step ST1a of FIG. 18 demonstrated in the said Embodiment 2 is shown. In FIG. 25, the characteristic point P1 is a point 150 m away from the right / left turn point P2-1 along the route of the guide route, that is, 150m before the right / left turn point P2-1.
6 A of area | region extraction parts pass the feature point P1, and when the own vehicle M arrives at the first right-left turn point P2-1, among the road links which comprise the guidance route R, the next right-left turn point P2-1 is demonstrated. So that the road link (inflow link to the right-left turn point P2-2) R ″ is perpendicular to the upper and lower ridgelines of the enlarged guide map display area 22 (the road link R ″ follows the direction of the map) To) specify the orientation of the map.
Next, as shown in FIGS. 25 (a) and 25 (b), the region extraction unit 6A is configured to guide the route R between the vehicle M between the right / left turn point P2-1 and the right / left turn point P2-2. Is extracted from the map area. Here, if the distance following the guide route R between the two right and left turn points is within a predetermined distance (for example, within 150 m) used when the feature point P1 is set, it is a continuous branch. judge. In the example of FIGS. 25 (a) and 25 (b), the guide route R between the right and left turn points P2-1 and P2-2 is substantially linear, so the right and left turn point P2-1 (first guidance object) Point) and a right and left turn point P2-2 (second guidance target point) on a boundary line is defined as a region A1 ′. As a result, a region A1 ′ having a minimum area is obtained. Note that white circles in FIG. 25 are nodes between links constituting the guide route R.

(2A) Arrangement processing in the enlarged guide map area FIG. 26 is a diagram for explaining the arrangement of the area A1 ′ extracted by the area extraction unit 6A in the enlarged guide map area, which has been described in the second embodiment. The details of the screen configuration handled in the process in step ST2a of FIG. 18 are shown. For example, when the area A1 ′ in FIG. 26A is extracted, the position determination unit 7A displays the reference line a1 ″ that equally divides the enlarged guide map area 22 to the left and right and the enlarged guide map display area 24 below. The position determination unit 7A sets the horizontal direction (left-right direction) as the X-axis direction in the enlarged guide map area 22 shown in FIG. A two-dimensional coordinate system in the Y-axis direction is set in the (vertical direction).
Next, when the position determination unit 7A sets the information arrangement area 23 and the enlarged guide map display area 24 as described above, the area A1 ′ shown in FIG. 26A does not protrude from the enlarged guide map display area 24. In addition, at least below the scale of the previous enlarged guide map, the scale is enlarged or reduced as close as possible to the scale of the previous enlarged guide map. That is, it is made to become a detailed scale rather than the last enlarged guide map which is an enlarged guide map of the area | region A containing the guidance route R from the feature point P1 to the right-left turn point P2-1.
Further, the position determination unit 7A makes the Y coordinate of the right / left turn point P2-1 the same as the Y coordinate of the straight line a2, and the road link R ″ connected to the right / left turn point P2-2 is close to the reference line a1 ″. To place. The subsequent processing is the same as the processing from step ST3 to step ST6 of FIG. 18 described in the second embodiment.

  As described above, according to the third embodiment, the direction of the map is defined so that the road link connected to the right / left turn point P2 (or P2-2) is perpendicular to the upper and lower ridge lines of the enlarged guide map area 22. Then, a minimum area including a feature point, a right / left turn point, and a guide route between these points is extracted, and this minimum area equally divides the enlarged guide map area 22 left and right into a reference line a1 ′ (or a1). ”) So that the road link connected to the guidance target point is close. This is particularly effective when the guidance target point is a right / left turn point, that is, a right / left turn point P2 (or P2). -2), the direction of the map is defined with reference to the road link leading to (2), and the right and left turn directions at the point in the enlarged guide map area 22 can be easily recognized.

In the first to third embodiments, the case where the navigation device according to the present invention is applied to a car navigation device has been described. However, the present invention is not limited to this.
That is, at least one processing content from the first embodiment to the third embodiment can be realized by a server device on the network. In this case, the server device on the network calculates guidance data and enlarged guide map data, generates a guide map based on the data, and distributes the result to a device having a communication function and a display output. A guide map is output. By doing in this way, the guidance map by the said Embodiment 1 and the said Embodiment 2 can be output to various apparatuses, and it is easy for many users to visually recognize the space of the advancing direction along the guidance path | route R. Can provide directions.

Furthermore, the navigation device according to the present invention is applicable to all devices having a display output unit. For example, the present invention may be applied not only to an in-vehicle car navigation device but also to a display device of a mobile phone terminal or a personal digital assistant (PDA).
Further, the present invention may be applied to a display device such as a PND (Portable Navigation Device) that is carried and used by a person on a moving body such as a vehicle, a railway, a ship, or an aircraft.

  In the present invention, within the scope of the invention, any combination of the embodiments, or any modification of any component in each embodiment, or omission of any component in each embodiment is possible. .

  DESCRIPTION OF SYMBOLS 1 Route search part, 2 Map database, 3 Guide data generation part, 4, 4A Guide map generation part, 5 Display output part, 6, 6A Area extraction part, 7, 7A Position determination part, 8 Intersection determination part, 9 Display Position adjustment unit, 10 arrangement unit, 11 previous map scale storage unit, 20 display screen, 21 wide area map display screen, 22 enlarged guide map area, 23 information arrangement area, 24 enlarged guide map display area.

Claims (7)

A first guide route connecting a predetermined point before the guide target point on the guide route and the guide target point, and a guide route following the guide target point and connected to the first guide route In a navigation device including a display output unit for displaying an enlarged guide map of a map area including the second guide route that is displayed in the guide map display area,
The display output unit intersects a map area including the first guide route with the second guide route when the second guide route intersects with a ridgeline defining a boundary of the guide map display region. A map device including the first guide route and the second guide route is displayed in the guide map display region by being arranged near the display region opposite to the ridgeline to be displayed.   The display output unit includes a map area including the second guide route in the guide map display area as compared to the case where the predetermined point is arranged at a reference position that equally divides the guide map display area left and right. 2. The navigation apparatus according to claim 1, wherein the predetermined point is arranged at a position that is widely displayed. The display output unit, a display element information relating to the guidance-target point is described, according to claim 1 or claim 2, wherein the displaying the enlarged guide map arranged in the peripheral portion of the guidance-target point Navigation device. The display output unit, a map of orientation in the guide map display area, connected road link to the guidance-target point is one of claims 1 to 3, characterized in that in the direction along the ridge The navigation device according to any one of the preceding claims. The display output unit displays a route between a first guidance target point on the guidance route and a second guidance target point subsequent thereto as the first guidance route. A map area including the first guide route is displayed at a position such that a map area including a second guide route following the guide target point is widely displayed in the guide map display region. The navigation device according to any one of claims 1 to 4 . The display output unit enlarges or reduces the map area including the first guidance route so as to have the same scale as the enlarged guide map of the region including the route to the first guidance target point. The navigation device according to claim 5 . The display output unit, a map of orientation in the guide map display area, claim 5 or claim second guide connected to the road link to the object point is characterized in that in the direction along the edge line 6 The navigation device described.

Images