JP2004309224A - Navigation apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To guide a branch point to be guided without any mistakes by allowing the branch point to be guided to be verified at a glance even if a route including a complex road is guided when right/left turns are made in the route guidance to a destination. <P>SOLUTION: When one turns left/right during route guidance, an enlarged figure of a guided intersection 30 is displayed when a specific distance (for example 300 m) before the guided intersection 30 is reached. Then, when an intersection exists before the guided intersection 30, the color of a road other than the guided route connected to the passed intersection is changed, thus enabling which intersection is passed to be verified at a glance. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a navigation device for guiding and displaying a route to a destination, and more particularly to a guidance display near a junction.
[0002]
[Prior art]
Conventionally, in-vehicle navigation systems, when approaching a branch point such as an intersection during route guidance, increase the visibility of the map by increasing the visibility, display arrows on the screen of the traveling route, and use detailed guidance by voice To the person. However, while traveling, it is difficult to grasp the relative relationship between the current position displayed on the map and the actual position of the own vehicle, and the vehicle may bend or pass shortly before the guided target branch point. There is. Therefore, there is an in-vehicle navigation device that changes the length of a bar graph along with the movement of the vehicle or changes the color of an arrow to express the remaining distance to an intersection to be guided (hereinafter referred to as a guidance intersection). (For example, refer to Patent Document 1).
[0003]
There is also a navigation system that displays an intersection name of a guidance intersection and an intersection just before the guidance intersection and blinks the name of the approaching intersection, thereby expressing the relationship between the guidance intersection displayed on the map and the position of the vehicle. (For example, see Patent Document 2).
[0004]
[Patent Document 1]
JP-A-9-101167 ([0031] to [0033], FIG. 1).
[Patent Document 2]
JP-A-7-26717 ([0011], [0027] to [0029], FIG. 7).
[0005]
[Problems to be solved by the invention]
However, in the in-vehicle navigation device disclosed in Patent Document 1, the remaining distance up to the guidance intersection is displayed in conformity with actual driving, but a route including a complicated road where a plurality of junctions such as intersections are adjacent to each other is displayed. When providing guidance, it is difficult to check the guidance intersection at a glance, and there is a possibility that the vehicle may turn or pass in front.
[0006]
Further, in the navigation system of Patent Document 2, it is difficult to confirm the intersection name while the vehicle is running even if the intersection name is blinked, or an intersection that passes through the guidance intersection on the map screen (hereinafter, referred to as a passing intersection). Is not displayed, it is difficult to confirm the guidance intersection. In particular, when guiding a route that includes a complex road where a plurality of intersections are adjacent to each other, or at a junction without an intersection name, it is difficult to check the junction to be guided at a glance. Branch point may be mistaken.
[0007]
SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems. Even when a route including a complicated road where a plurality of branch points are adjacent to each other is to be guided, the branch point to be guided can be confirmed at a glance, and the branch point to be guided is An object of the present invention is to provide a navigation device that can guide a user without making a mistake.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, in a navigation device that displays a guidance route on a map by a display means and performs route guidance, a navigation device that guides a right or left turn during route guidance is provided. When approaching and performing the necessary route guidance to make a right or left turn at a fork, cross the guidance route associated with a specific point existing between the fork to be guided and the current position. Or a control means for changing a display form of a feature on a map on which a moving body to be connected can move at a predetermined timing so that the fact that the vehicle has passed a specific point according to route guidance can be visually recognized. Features.
[0009]
Therefore, even when guiding a complicated branch point, it is possible to visually recognize the passing point before the guided branch point, and it is possible to relatively easily grasp the positional relationship between the current position and the guided branch point. it can. Therefore, it is possible to move without departing from the guide route.
[0010]
According to the second aspect of the present invention, the navigation device displays an enlarged view of the junction to be guided when approaching the junction to be guided, and the control unit controls the vicinity of the junction to be guided. When the enlarged view is displayed, the display form of a feature on a map to which a moving body can move is changed so that the passage of a specific point in the enlarged view can be visually recognized at a glance. Therefore, the change of the display mode in the enlarged view enhances the visibility, so that the branch point to be guided relatively easily can be definitely guided.
[0011]
Further, according to the third aspect of the present invention, in the navigation device according to the second aspect, an enlarged view of the branch point to be guided is displayed on a part of the display screen of the display means simultaneously with the map (two-screen display). In such a case, the display form of a feature on a map to which both or one of the moving object and the enlarged view and the map is movable is changed. As a result, the current position can be confirmed at two different scales, and it is easier to compare with the actual movement. Therefore, it is possible to relatively easily confirm the branch point to be guided, and to guide the branch point without mistake.
[0012]
The invention according to claim 4 is characterized in that any one before or after passing a specific point, or after passing, or a combination thereof is set as a predetermined timing for changing the display form. I do. Therefore, the change of the display mode can be visually recognized in a time series, and the current position of the moving object can be more accurately grasped, so that the branch point to be guided can be more accurately guided.
[0013]
Further, in the invention described in claim 5, when the display mode is changed, the display color is changed. By changing the color of the feature that can be moved by the moving body, visibility is improved, and even when guiding a route including a complicated road where a plurality of branch points are adjacent, branching at a glance You can check the points.
[0014]
Furthermore, according to the invention of claim 6, since a specific point is a branch point between the route and an approachable road intersecting the route, a complicated road having a plurality of branch points adjacent to each other is characterized. In the case of guiding a route including a route, the branch point to be guided can be guided without mistake.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a configuration diagram showing a configuration of a vehicle-mounted navigation device according to an embodiment of the present invention. The in-vehicle navigation device includes a position detector 1, a map data input device 6, an operation switch group 7, a remote control sensor 8, a remote control terminal (hereinafter abbreviated as a remote control) 9, a control circuit 10, a display device 11, and a speaker 12. ing. Each of the position detectors 1 includes a well-known geomagnetic sensor 2, a gyroscope 3, a distance sensor 4, and a GPS receiver 5 for a GPS (Global Positioning System) that detects the position of the vehicle based on radio waves from satellites. are doing. Each of these sensors 2, 3, 4, and 5 has an error having a different property, and is configured to be used while interpolating with a plurality of sensors. It should be noted that depending on the accuracy, a part of the above-described components may be used, and a rotation sensor for the steering wheel, a wheel sensor for each rolling wheel, or the like may be used. With this position detector 1, it becomes possible to add and display a vehicle current position mark indicating the current position of the vehicle on the display device 11.
[0016]
The map data input device 6 (corresponding to the map data storage means in the present invention) controls data for displaying various maps including map matching data, map data, and landmark data for improving the accuracy of position detection. A device for inputting to the circuit 10. The map data is obtained by connecting a plurality of nodes such as intersections with links to form a map. As a medium, a CD-ROM (or DVD-ROM) is generally used because of its data amount, but a medium such as a memory card or a hard disk may be used.
[0017]
In addition, the on-vehicle navigation device can input various information such as a destination setting for a route search from the remote control sensor 8 via the remote controller 9 or the operation switch group 7, similarly to the conventional on-vehicle navigation device. Can be. The operation switch group 7 may be configured by, for example, a touch switch or a mechanical switch integrated with the display device 11.
[0018]
The control circuit 10 (corresponding to control means in the present invention) includes computer means, and includes a well-known CPU, ROM, RAM, I / O, and a bus connecting these components. Lines are provided. Then, the control circuit 10 performs various control processes in the navigation device such as route search and map display, and notifies the processed information by the display device 11 and the speaker 12.
[0019]
As the display device 11, a liquid crystal display device, a CRT display device, or the like can be used, and the display device 11 also has a function corresponding to a display unit in the present invention. Then, the map data input from the map data input device 6, the vehicle current position mark generated based on the position information from the position detector 1, and additional data such as a guidance route displayed on the map are superimposed. Can be displayed.
[0020]
In the above-described configuration, in the navigation apparatus for a vehicle, the control circuit 10 calculates a route using the map data of the map data input device 6 based on the destination input from the operation switch group 7 or the remote controller 9. Then, the map and the vehicle current position mark are displayed on the display device 11 by the calculated route and the current position of the vehicle calculated by the control device 10 from the information from the position detector 1 and the map data input device 6, Provides route guidance. At the time of the route guidance, the route is highlighted and the voice guidance by the speaker 12 is performed as in the case of the conventional in-vehicle navigation device. In addition, when approaching a branch point to be guided during route guidance, an enlarged view of the branch point is displayed to enhance visibility.
[0021]
Next, in the route guidance, the road color changing process executed by the control circuit 10 when approaching the branch point will be described with reference to the flowchart of FIG. 2 and the display screen examples of FIGS. The road color changing process is a process that is repeatedly performed until the guidance is completed in accordance with the traveling of the vehicle, and is performed in parallel with the route guidance near the branch point in the conventional in-vehicle navigation device.
[0022]
First, a guidance display screen (for example, FIG. 3) is displayed on the display device 11 during route guidance. The guidance display screen is a map screen in which the position of the own vehicle is slightly lower than the center of the display screen of the display device 11 (referred to as front wide display), and displays a map around the traveling position and highlights the route being guided. The vehicle current position mark 24 is superimposed and displayed on the traveling road. Although common to the following map screens, the azimuth and scale mark 20 displayed at the top of the display screen indicate the azimuth and scale of the displayed map, and the lane list 21 indicates the lane information of the road on which the vehicle is traveling. . The “wide area” and “detail” switches 22 and 23 displayed at the bottom of the display screen are set as a detailed display function and a wide area display function of the display map, respectively.
[0023]
Then, when the vehicle reaches a predetermined distance (for example, 300 m) in front of a branch point (guidance intersection) to which the guidance route should be guided, the control circuit 10 starts the road color changing process (FIG. 2). 2, in step 100, the display screen of the display device 11 is switched to a two-screen display of a map screen and a guide intersection enlarged screen (FIG. 4). In the two-screen display, the display screen is divided into two right and left, a map of the same scale as the map displayed on the guidance display screen (FIG. 3) is displayed on the left, and an enlargement around the guidance intersection 30 is displayed on the right. Display the map.
[0024]
In each of the displays, the vehicle current position mark 24 is displayed slightly below the center of the display frame, and the "zoom release" switch 25 at the bottom of the display screen has a function of returning to the guidance display screen (FIG. 3). Switch 26, a display / non-display selection function of the lane list 21 is set. Further, the remaining distance graph 27 represents the distance from the vehicle to the guidance intersection in a bar graph. Further, in the guide intersection enlarged view, the guide intersection 30 is displayed substantially at the center of the display frame, slightly above, and the vehicle current position mark 24 is displayed so as to approach the guide intersection 30 from below according to the vehicle traveling, The current position of the vehicle can be grasped on a map. Note that the guidance intersection enlarged view shows the guidance intersection 30 and the junctions and roads around the vehicle including the route. The junction where the highlighted route turns right and left is the guidance intersection 30, and the current vehicle position. The other branch points existing before reaching the guidance intersection 30 are distinguished as branch points that pass (passing intersections).
[0025]
When the display screen of the display device 11 is switched to the two-screen display in step 100 of FIG. 2, in step 101, it is determined whether or not the intersection enlarged view erasing condition is satisfied. The intersection enlarged view erasing condition may be a case where the “enlargement canceling” switch 25 is pressed or a case where the vehicle turns before the guidance intersection 30. If it is determined that the intersection enlarged view erasing condition is satisfied (step 101: Yes), the process proceeds to step 105, where the intersection enlarged view is erased, the guidance display screen (FIG. 3) is displayed on the entire screen, and then the road color is changed. The process ends, and the route guidance is continued.
[0026]
On the other hand, when it is determined that the intersection enlarged view erasing condition is not satisfied (Step 101: No), the process proceeds to Step 102, and it is determined whether the current position is an intersection. The determination as to whether or not the vehicle is an intersection is performed based on the map data stored in the map data input device 6. In the map data, information on a branch point such as an intersection is stored as node information, and road information is stored as link information. Therefore, the control circuit 10 uses the information from the current position detector 1 and the map data input device 6 to store It is possible to determine whether the current position is an intersection.
[0027]
If it is determined in step 102 that the intersection is not an intersection (step 102: Yes), it is determined whether or not the intersection enlarged view erasing condition of step 101 is satisfied until the intersection is determined (step 102: No). The determination as to whether or not the intersection is 102 is repeated. When it is determined that the vehicle is at an intersection (Step 102: No), the process proceeds to Step 103, and it is determined whether the vehicle has passed the intersection.
[0028]
If it is determined in step 103 that the vehicle is not passing through the intersection (step 103: No), the determination of passing through the intersection is repeated. When it is determined that the vehicle has passed the intersection (Step 103: Yes), the process proceeds to Step 104, and it is determined whether or not the intersection that has passed is the guidance intersection 30. If it is not the guidance intersection 30 (step 104: No), it is determined that the vehicle has passed the passing intersection, and as shown in FIG. 5, the color of the road 31 intersecting the traffic road at the passing intersection is changed (step 106). , The processing from step 101 is repeated.
[0029]
The two-screen display shown in FIG. 5 is an example of a display screen after the vehicle has passed a passing intersection located before the guidance intersection 30. The enlarged map around the guidance intersection 30 on the right side of FIG. 5 shows the guidance intersection 30 closer to the intersection than the intersection where the vehicle current position mark 24 has passed. Then, the color of the road 31 that is connected to the crossed intersection and is not the route is changed. The road 31 that does not include the route and that is connected to the crossed intersection is changed to green, for example, and is expressed in a different color from the road color of the road that has not passed and the highlighted color of the route.
[0030]
The road color changing process performed by the control circuit 10 is repeated as shown in FIG. The two-screen display shown in FIG. 6 is an example of a display screen when the vehicle passes two passing intersections and is located just before the guidance intersection 30. In the enlarged map around the guidance intersection 30 in the right part of FIG. 6, the vehicle current position mark 24 is displayed near the guidance intersection 30, and the colors of the roads 31 and 32 connected to the two passing intersections are changed. I have. Since the road 32 crosses the route, the colors of both connecting roads on both sides of the route are changed. In addition, the change of the color of the connection roads 31 and 32 changes all the parts displayed in the display frame of the enlarged map around the guidance intersection 30.
[0031]
Thereafter, step 104 is executed in the road color changing process, and when it is determined that the vehicle has passed the guidance intersection (step 104: Yes), the process proceeds to step 105. In step 105, the intersection enlarged view is erased, and the guidance display screen (FIG. 3) is displayed on the full screen. Then, the road color change processing is terminated, and the normal route guidance is continued.
[0032]
As described above, according to the on-vehicle navigation device described in the present embodiment, by changing the road color of the passing intersection when passing through the intersection before the guidance intersection near the guidance intersection during route guidance, At a glance, it is possible to check which intersection has passed. Therefore, even in a complicated place where a plurality of junctions are adjacent to each other, there is a problem that the vehicle accidentally passes through the guidance intersection or turns incorrectly in front of the guidance intersection and deviates from the guidance route. Can be prevented. In addition, since the road color on the map changes instead of the remaining distance or the name of the intersection, the visibility is improved, and the relationship between the guidance intersection and the position of the vehicle can be grasped relatively easily. More accurate route guidance becomes possible.
[0033]
In the present embodiment, the color of the road that has passed after passing through the intersection has been changed. Road) may be flashed, and the color of the passing road may be changed after the vehicle has passed. Therefore, since the intersection road is blinked on the map for the intersection approaching the vehicle, the intersection approaching the vehicle can be confirmed at a glance. Then, after passing through the intersection, the color of the intersection road at the passing intersection is changed, so that even when a plurality of intersections are adjacent to each other, it is easier to confirm the intersection that is approaching or after the intersection.
[0034]
Further, when there are a plurality of intersections before the guidance intersection, only the road that has just passed may be changed in color, and the color of the road that has passed before may be returned to the original color. For example, in FIG. 6, although the colors of both the passing roads 31 and 32 have been changed, when the color of the road 32 is changed, the color of the road 31 is returned to the color before the change. This makes it possible to determine whether the cross road after passing is just after passing, and enhances visibility.
[0035]
Further, in this embodiment, only the display of the enlarged view of the intersection on the right side of the screen is changed, but the color of the road that has passed may be changed on the map on the left side of the screen. At this time, the range in which the color is changed may be the entire display range or only a certain range as long as the range can be recognized at a glance. By changing the color of the passing road not only in the enlarged view of the intersection, but also on the map screen, the user can recognize the passing intersection at a glance, regardless of which screen of the two screens, It is relatively easy to grasp the positional relationship with the guidance intersection.
[0036]
Further, in the present embodiment, at the intersection, the display mode such as color change is changed for the road that has passed, but the display mode is changed or connected to or intersects with a route such as a branch road, a river, a track, or a pedestrian bridge. It may be a feature (display target) on a movable map of a moving object present.
[0037]
The moving object here is a ship or a boat if the display object is a river, a train or a linear motor car if it is a track, and a person or a bicycle if it is a pedestrian bridge.
[0038]
The present invention is not limited to an in-vehicle navigation device mounted on a vehicle, but can be applied to a mobile object other than the vehicle, and can also be applied to a portable terminal that can be carried around by a person.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a navigation device according to an embodiment of the present invention.
FIG. 2 is a flowchart of a process according to an embodiment of the present invention.
FIG. 3 is a diagram illustrating a display example of a guidance display screen during route guidance.
FIG. 4 is a diagram showing a display example of a two-screen display near a guidance intersection.
FIG. 5 is a diagram showing a display example at the time of passing an intersection just before turning right and left.
FIG. 6 is a diagram illustrating a display example of an enlarged view of an intersection just before turning right and left.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Position detector 2 ... Geomagnetic sensor 3 ... Gyroscope 4 ... Distance sensor 5 ... GPS receiver 6 ... Map data input device 7 ... Operation switch group 8 ... Remote control sensor 9 Remote control terminal 10 Control circuit 11 Display device 12 Speaker

Claims (6)

In a navigation device having a function of performing route guidance based on a guide route on a map displayed on a display means,
Under the situation where approaching the junction to be guided to turn left and right and the route guidance necessary to turn the junction right and left is executed,
Among the features on the map on which the moving body that crosses or connects to the guidance route is movable, a display form of a feature associated with a specific point existing between the junction and the current position,
A navigation device comprising control means for changing at a predetermined timing to a form in which the fact that the user has passed the specific point according to route guidance can be visually recognized. When approaching the junction to be guided, an enlarged view of the junction to be guided is displayed on the display means,
The navigation device according to claim 1, wherein when the enlarged view is displayed, a display form of the feature on the map to which the moving object displayed in the enlarged view is movable is changed. When an enlarged view of the junction to be guided is displayed on a part of the display screen of the display unit simultaneously with the map,
The navigation device according to claim 1, wherein a display form of the feature on the map to which one or both of the moving objects in the enlarged view and the map is movable is changed. . 4. The method according to claim 1, wherein the predetermined timing is set before, when passing, or when passing the specific point, or a combination thereof. 5. Navigation device. The navigation device according to any one of claims 1 to 4, wherein the change of the display mode changes a display color. The navigation device according to any one of claims 1 to 5, wherein the specific point is a junction between the guide route and an accessible road.

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