JP2010197060A - Travel route display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a travel route display for displaying a travel route of its user's own vehicle, without giving a sense of incongruity to persons who watch its map. <P>SOLUTION: For displaying a map including the own vehicle and the travel route on a liquid crystal monitor 4, the travel route display includes: a map data storage 5 which stores map information including position information representing the shapes of roads, and a GPS device 3 for acquiring the current position of the own vehicle. The travel route where the own vehicle travels is detected by a travel route detection section 12, by referring to the map information stored in the map data storage 5 and using the current position of the own vehicle obtained by the GPS device 3. When a map including the own vehicle is displayed using the map information stored in the map data storage 5, a drawing controller 13 allows the travel route detected by the detection section 12 to be displayed at the forefront surface in the liquid crystal monitor 4, comparably with other information contained in the map information. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a travel route display device that displays a travel route on which a vehicle travels.

  Conventionally, when the vehicle is traveling in a place where the road on which the vehicle is traveling overlaps with other roads, the map displayed on the display depends on the level of road overlap and the importance of the road. Another road may be drawn on the road on which the vehicle is traveling. In this case, it is difficult for the person who sees the travel route on the display to see the travel route on which the host vehicle travels.

  On the other hand, for example, as shown in Patent Document 1 below, a map image is displayed in which a road at a position higher than the road on which the vehicle is traveling is hidden by using the height information on the road. There is a technology to generate.

JP 2000-352516 A

  In the conventional technology, when the host vehicle is traveling on a road passing under an elevated road, other roads are not drawn on the travel route on which the host vehicle is traveling. It gave a strange feeling to those who saw the driving route. In other words, even if a road laid on a position higher than the travel route of the host vehicle among the surrounding roads with respect to the travel route of the host vehicle is within the user's field of view, the road at the higher position is not drawn on the display. For example, even if an attempt is made to understand the surrounding road structure from the information displayed on the display, there is a problem that the surrounding road cannot be understood because the road at a high position is not displayed.

  Therefore, the present invention has been proposed in view of the above-described circumstances, and provides a travel route display device capable of displaying the travel route of the host vehicle without giving a sense of incongruity to a person viewing the map. With the goal.

  The present invention relates to a travel route display device for displaying a map including a host vehicle and a travel route on a display unit, the map information storage unit storing map information including position information indicating the shape of a road, and the current state of the host vehicle. Current position acquisition means for acquiring a position, and the own vehicle by referring to the map information stored in the map information storage means using the current position of the own vehicle acquired by the current position acquisition means by the travel route detection means The travel route on which the vehicle is traveling is detected. And when displaying the map containing the own vehicle using the map information memorize | stored in the map information memory | storage means, a map drawing means makes another driving | running route detected by the driving | running route detection means the other included in map information. Compared with the information, it is displayed on the forefront of the display means.

  According to the present invention, when a map including the host vehicle is displayed using the map information, the travel route of the host vehicle is displayed on the foreground in the display unit in comparison with other information included in the map information. Therefore, it is possible to display the travel route of the host vehicle without giving a sense of incongruity to a person who views the map.

It is a block diagram which shows the functional structure of the vehicle-mounted navigation apparatus shown as embodiment of this invention. It is a flowchart which shows the process sequence when displaying a map with the vehicle-mounted navigation apparatus shown as 1st Embodiment of this invention. It is an image figure explaining the procedure of the drawing process by the vehicle-mounted navigation apparatus shown as 1st Embodiment of this invention. It is a figure which shows the own vehicle periphery map image as a comparative example. It is an image figure explaining the procedure of other drawing processes by the vehicle-mounted navigation apparatus shown as 1st Embodiment of this invention. It is an image figure explaining the procedure of other drawing processes by the vehicle-mounted navigation apparatus shown as 1st Embodiment of this invention. It is a flowchart which shows the process sequence when displaying a map with the vehicle-mounted navigation apparatus shown as 2nd Embodiment of this invention. It is an image figure explaining the procedure of the drawing process by the vehicle-mounted navigation apparatus shown as 2nd Embodiment of this invention.

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

[First Embodiment]
The in-vehicle navigation device shown as the first embodiment of the present invention includes functional units configured as shown in FIG. This in-vehicle navigation device includes an operation input unit 2, a GPS (Global Positioning System) device (current position acquisition unit) 3, a liquid crystal monitor (display unit) 4, and a map data storage unit (map information storage). Means) 5 is connected. The control device 1, the GPS device 3, and the map data storage unit 5 are built in, for example, an instrument panel in a vehicle, the operation input unit 2 is provided at a position that can be operated by a passenger such as a driver, and the liquid crystal monitor 4 is It is provided in the position which can be visually recognized from a passenger | crew in the approximate center of a ment panel.

  The operation input unit 2 includes a switch or the like that is operated by an occupant when generating a command for the control device 1. The operation input unit 2 may be configured by a touch panel built in the liquid crystal monitor 4. The operation of the operation input unit 2 is detected by the control device 1.

  The GPS device 3 supplies a signal representing the current vehicle position to the control device 1 using a plurality of GPS signals received from GPS satellites.

  The liquid crystal monitor 4 displays various information according to the control of the control device 1. In particular, the liquid crystal monitor 4 displays a map including the travel route of the host vehicle so that the travel route of the host vehicle can be displayed without giving a sense of incongruity to a person viewing the map by an operation described later.

  The map data storage unit 5 stores map data for calculating a travel route of the host vehicle by the control device 1 and for displaying a map around the host vehicle on the liquid crystal monitor 4. This map data includes height information between roads. As the map data storage unit 5, a hard disk, a DVD-ROM and a DVD-ROM drive, a CD-ROM and a CD-ROM drive, etc., storing map data can be used.

  The control device 1 includes a route calculation unit 11, a travel route detection unit (travel route detection unit) 12, and a drawing control unit (map drawing unit) 13. The control device 1 is actually composed of a ROM, a RAM, a CPU, and the like, but functions that can be realized by the CPU performing processing according to a program stored in the ROM will be described as blocks.

  The route computation unit 11 performs a travel route computation process when the occupant's operation on the operation input unit 2 is detected and the destination information is set. The route calculation unit 11 uses the destination information, the current position of the host vehicle detected by the GPS device 3, and the map data stored in the map data storage unit 5 to travel from the current position to the destination. Is calculated. Then, the route calculation unit 11 creates guidance display information and voice information such that the host vehicle travels along the calculated travel route. The route calculation unit 11 causes the drawing control unit 13 to draw a guidance display and display the guidance display on the liquid crystal monitor 4, and outputs audio information from a speaker (not shown).

  The travel route detection unit 12 detects a travel route along which the host vehicle is traveling. The travel route detection unit 12 collates the current position of the host vehicle detected by the GPS device 3 with the map data stored in the map data storage unit 5, and presents the current position among the roads included in the map. A travel route along which the host vehicle is traveling is detected. This travel route is supplied to the drawing control unit 13 as road link information indicating the road on which the host vehicle is traveling. The road link information includes route / latitude information indicating the position of the road, road type information, and height information indicating a height relationship with other roads.

  The drawing control unit 13 performs a drawing process for displaying various information on the liquid crystal monitor 4. The drawing control unit 13 draws a map including the host vehicle and causes the liquid crystal monitor 4 to display the map including the host vehicle. At this time, the drawing control unit 13 controls the order in which roads are displayed regardless of the road height information when drawing a map using map data. Specifically, the drawing control unit 13 displays the travel route detected by the travel route detection unit 12 when the map including the host vehicle is displayed using the map information stored in the map data storage unit 5. Compared with other information included in the information, the information is displayed on the forefront of the liquid crystal monitor 4.

  The map display process by the vehicle-mounted navigation device shown as the first embodiment configured as described above will be described with reference to FIGS.

  First, in step S <b> 1, the in-vehicle navigation device acquires the current position of the host vehicle detected by the GPS device 3 by the control device 1.

  In the next step S2, the control device 1 detects the road on which the host vehicle is traveling, using the current position of the host vehicle acquired in step S1, by the travel route detection unit 12. At this time, the travel route detection unit 12 compares the current position of the host vehicle with the map stored in the map data storage unit 5 to detect a road corresponding to the current position of the host vehicle. The travel route detection unit 12 maintains a history of the current position where the host vehicle has traveled, obtains the traveling direction of the host vehicle, and when the host vehicle newly acquires the current position of the host vehicle in step S1, the host vehicle travels. Detecting the road that is running. Thus, the travel route detection unit 12 is a road near the current position of the host vehicle among the road link information included in the map stored in the map data storage unit 5, and the traveling direction of the host vehicle and the traveling direction of the road Can be selected as a travel route of the host vehicle.

  In the next step S3, the drawing control unit 13 includes map data stored in the map data storage unit 5 such as water system data such as seas, lakes, and rivers, forests, parks, and the like as a background when the map is drawn. Draw green data etc. as map background. Thereby, the drawing control part 13 can draw the lake as the background image 101 among the own vehicle periphery map images 100, as shown to Fig.3 (a), for example.

  In the next step S4, the drawing control unit 13 uses the road data in the map data stored in the map data storage unit 5 to select a road other than the travel route of the host vehicle detected in step S2 in step S3. Draw on the background drawn in step S4 to step S5. At this time, the drawing control unit 13 determines whether or not there is road data other than the travel route in the drawing range included in the surrounding map image 100 of the host vehicle (step S4), and road data other than the travel route exists in the drawing range. If there is, a road other than the travel route is drawn (step S5). On the other hand, if all road data other than the travel route within the drawing range is drawn, the process proceeds to step S6. Thereby, the drawing control unit 13 can draw roads 102A, 102B, and 102C other than the travel route in the map image 100 around the host vehicle, for example, as shown in FIG.

  In step S <b> 6, the drawing control unit 13 compares the travel route of the host vehicle detected in step S <b> 2 with respect to the background image 101 rendered in step S <b> 5 and the host vehicle surrounding map image 100 in which the road 102 other than the travel route is rendered. Overwrite. Thereby, the drawing control unit 13 can draw the traveling road 103 of the host vehicle on the road 102 other than the traveling route, for example, as shown in FIG.

  In the next step S <b> 7, the drawing control unit 13 draws a host vehicle mark 104 and a landmark 105 representing the host vehicle in the host vehicle surrounding map image 100. Thereby, the drawing control part 13 can draw the own vehicle surrounding map image 100 as shown, for example in FIG.3 (d).

  In the next step S8, the drawing control unit 13 outputs the own vehicle surrounding map image 100 created by the above-described processing to the liquid crystal monitor 4, and repeats the processing from step S1 again.

  Thereby, the vehicle-mounted navigation device can display the travel route detected by the travel route detection unit 12 on the forefront of the liquid crystal monitor 4 in comparison with other information included in the map. Therefore, the in-vehicle navigation device can avoid the travel route 103 of the host vehicle traveling by the host vehicle from being hidden by a road 102 other than the travel route as in the comparative example shown in FIG.

  In addition, when the vehicle-mounted navigation device draws the road 102 other than the travel route of the host vehicle in steps S4 to S5, the in-vehicle navigation device also draws the travel route 103 of the host vehicle, and in step S6, the travel of the host vehicle is performed again. The route 103 may be drawn on the vehicle surrounding map image 100 on which the road 102 other than the background image 101 and the travel route is drawn.

  Furthermore, when drawing the road 102 other than the travel route in steps S4 to S5, the vehicle-mounted navigation device draws the travel route 103 including the travel route 103 of the host vehicle, and in step S6, the background image 101 and other than the travel route are newly displayed. The translucent color of the travel route 103 of the own vehicle may be drawn on the map image 100 around the own vehicle on which the road 102 is drawn. Accordingly, the in-vehicle navigation device displays the traveling route 103 of the host vehicle on the lower side of the road 102A other than the traveling route according to the height information as shown in FIG. 6 (b), and thereafter, as shown in FIG. 6 (c). As described above, the translucent portion 103 ′ of the travel route 103 of the host vehicle can be drawn on the road 102 other than the travel route. Here, in the in-vehicle navigation device, only the travel route 103 on the road 102A other than the travel route is the translucent portion 103 ', but the entire travel route 103 of the host vehicle may be translucent.

  As described above, according to the in-vehicle navigation device shown as the embodiment of the present invention, when a map including the host vehicle is displayed using the map information, the travel route of the host vehicle is included in the map information. Since it is displayed on the forefront of the liquid crystal monitor 4 as compared with the information, the traveling route of the host vehicle can be displayed without giving a sense of incongruity to the person viewing the map. Specifically, according to this in-vehicle navigation device, after drawing all map information including the host vehicle, the travel route of the host vehicle is overwritten and displayed.

  Therefore, according to this in-vehicle navigation device, even if the road on which the host vehicle is traveling has a road structure that overlaps with other roads, the road on which the host vehicle is traveling is always Can be drawn on top. This makes it possible to display the travel route of the host vehicle in an easy-to-understand manner regardless of the vertical relationship of road overlap and the importance of the road.

  Furthermore, according to this in-vehicle navigation device, when the travel route displayed on the foreground on the liquid crystal monitor 4 overlaps with another road, at least a part of the travel route is changed to translucent, so that the host vehicle is always In addition to being able to draw the road you are driving on other roads, it is easy to see the relationship with surrounding roads even when your vehicle's travel route passes through a point where it overlaps with other roads. It is possible to display.

[Second Embodiment]
Next, an in-vehicle navigation device shown as a second embodiment of the present invention will be described. In addition, about the part similar to 1st Embodiment, the detailed description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  The in-vehicle navigation device shown as the second embodiment is a travel route from the current position of the host vehicle acquired by the GPS device 3 to a predetermined distance among the travel routes detected by the travel route detection unit 12 by the drawing control unit 13. Is displayed on the forefront of the liquid crystal monitor 4 in comparison with other information included in the map information.

  As shown in FIG. 7, this in-vehicle navigation device acquires the current position of the host vehicle in step S1, detects the travel route of the host vehicle in step S2, and then proceeds to step S11.

  In step S11, the drawing control unit 13 calculates a point on the travel route that is a fixed distance from the current position of the host vehicle detected in step S1. Here, the drawing control unit 13 calculates a previously stored point on a certain distance on the travel route in the traveling direction of the host vehicle detected in step S2. This fixed distance may be a predetermined distance set in advance. The fixed distance may be uniformly 100 m, for example, and may be 100 m for ordinary roads, 200 m for national roads, and 500 m for exclusive roads such as highways, depending on the type of travel route. In addition, the drawing control unit 13 may change the fixed distance according to the current speed of the host vehicle, or may change according to the display range corresponding to the scale currently displayed on the liquid crystal monitor 4.

  Next, the drawing control unit 13 draws the background image 101 in step S3 as shown in FIG. 8A. In steps S4 and S5, the road 102 other than the traveling route of the own vehicle and the traveling route 103 of the own vehicle are displayed. draw. Here, the drawing control unit 13 performs drawing as shown in FIG. 8B without distinguishing between the travel route of the host vehicle and the road other than the travel route of the host vehicle.

  In the next step S12, the drawing control unit 13 draws the travel route 103 of the host vehicle. At this time, the drawing control unit 13 draws the traveling route 103 of the host vehicle up to the point obtained in step S11 so as to overwrite the surrounding map image 100 of the host vehicle. Specifically, as illustrated in FIG. 8C, the drawing control unit 13 overwrites the road portion 103 a within a certain distance from the current position of the host vehicle in the travel route 103 of the host vehicle. Thereby, even if the road portion 103a within a certain distance from the current position of the host vehicle is lower than the road portion 103b farther than the certain distance in the travel route 103 in the height information, the road portion 103b is overwritten. And drawn.

  Then, the drawing control unit 13 displays the created vehicle surrounding map image 100 on the liquid crystal monitor 4.

  As described above, according to this in-vehicle navigation device, as in the in-vehicle navigation device according to the first embodiment, when a map including the own vehicle is displayed using map information, the travel route of the own vehicle is Compared with other information included in the information, the information is displayed on the forefront of the liquid crystal monitor 4, so that the travel route of the host vehicle can be displayed without giving a sense of incongruity to the viewer. Therefore, according to this in-vehicle navigation device, even if the road on which the host vehicle is traveling is a three-dimensional place, the road on which the host vehicle is traveling is always drawn on the other road. be able to. This makes it possible to display the travel route of the host vehicle in an easy-to-understand manner regardless of the vertical relationship of road overlap and the importance of the road.

  Moreover, according to this in-vehicle navigation device, in addition to this, even when the road on which the vehicle is traveling overlaps with the same road in a complicated road structure such as an interchange, the vicinity of the vehicle The road can always be drawn on the top to make it easy to understand.

  The above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and various modifications can be made depending on the design and the like as long as the technical idea according to the present invention is not deviated from this embodiment. Of course, it is possible to change.

DESCRIPTION OF SYMBOLS 1 Control apparatus 2 Operation input part 3 GPS apparatus 4 Liquid crystal monitor 5 Map data memory | storage part 11 Path | route calculation part 12 Traveling path detection part 13 Drawing control part

Claims (4)

A travel route display device for displaying a map including the host vehicle and the travel route on a display means,
Map information storage means for storing map information including position information indicating the shape of the road;
Current position acquisition means for acquiring the current position of the host vehicle;
Using the current position of the host vehicle acquired by the current position acquisition unit, referring to map information stored in the map information storage unit, a travel route detection unit that detects a travel route on which the host vehicle is traveling;
When displaying a map including the host vehicle using the map information stored in the map information storage means, the travel route detected by the travel route detection means is compared with other information included in the map information. And a map drawing means for displaying on the forefront of the display means.   The map drawing means creates display data to be displayed on the display means by overwriting the travel route detected by the travel route detection means after drawing all map information including the host vehicle. The travel route display device according to claim 1.   The map drawing means includes, in the map information, a travel route from the current position of the host vehicle acquired by the current position acquisition unit to a predetermined distance among the travel routes detected by the travel route detection unit. 3. The travel route display device according to claim 1, wherein the travel route display device is displayed on the forefront of the display means in comparison with the information.   The map drawing means changes at least a part of the travel route to translucent when the travel route displayed on the foreground in the display means overlaps with another road. The travel route display device according to any one of Items 3 to 4.

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