JPH08128848A - Path guiding device - Google Patents

Abstract

PURPOSE: To easily specify an intersection to be guided next in a recommended path on a map being displayed on a screen. CONSTITUTION: When a destination is inputted to a man-machine interface device 1 by a remote control key 15, a recommended path is calculated by a path calculation device 3. The current position of a vehicle is constantly detected by a position detection device 5 and the driving of the vehicle is confirmed by a driving monitoring device 17. When approach to the intersection to be guided next is detected by the position detection device 5, a path guiding device 19 reads out such intersection attachment information as landmark information from a CD device by a CD data read controller 21. When the vehicle further approaches the intersection, the information is sent to the man-machine interface device 1. Then, the landmark information appears on the map of the displayed screen by a display 25 by the man-machine interface device 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a route guidance device,
In particular, it relates to a route guidance device for car navigation.

[0002]

2. Description of the Related Art There is a route guidance device for guiding a route at an intersection for the purpose of reducing the burden on the driver.

As a conventional technique of this route guidance device, as shown in, for example, Japanese Patent Laid-Open No. 61-194598, when an intersection to be guided is approached, the shape of the intersection (each extension from the intersection is displayed on the display screen. There is one that shows the direction to the driver by displaying the arrow indicating the direction of the road) and the direction in which to proceed.

Alternatively, a map near the vehicle is displayed on the display screen, the recommended route is indicated by arrows or colors, and when the intersection to be guided approaches, "Next is right (or left)." In Japanese Patent Application Laid-Open No. 4-320291, there are some that generate a voice signal to guide the driver, such as "... go straight ahead (or turn left or right)."

[0005]

[Problems to be solved by the invention] However, only in the direction such as "Next is right (or left)", or "... m go straight ahead (or turn left or right)"
With simple vague guidance such as direction and distance,
There is a problem that it is very difficult to understand which intersection is which extension road at an irregularly shaped intersection.

Further, on the displayed map, many map symbols and names such as "road name / number", "place name", "facility", etc. are displayed according to the traveling of the vehicle, and information about each individual intersection is displayed. When it comes to displaying, there is a problem that it becomes very difficult to see due to too much information.

The present invention has been made to solve the above problems, and it is an object of the present invention to make the intersection to be guided easy to understand.

[0008]

The route guidance device according to claim 1 of the present invention is a route guidance device for displaying and recommending a recommended route on a screen, and detecting means for detecting the approach of an intersection to be guided. , Display means for displaying information about the landmark of the intersection to be guided when the approach of the intersection to be guided is detected, and erasing means for erasing the information about the landmark displayed when passing through the intersection to be guided. It is provided.

A route guidance device according to a second aspect of the present invention is a route guidance device which displays and guides a recommended route on a screen,
A detection means for detecting the approach of an intersection to be guided and a voice guidance means for guiding the information about the mark of the intersection to be guided by voice when the approach of the intersection to be guided is detected are provided.

A route guidance device according to a third aspect of the present invention is the route guidance device according to the first aspect, wherein a voice for guiding information about a landmark of the intersection to be guided when the approach of the intersection to be guided is detected. It is provided with a guide means.

A route guiding device according to a fourth aspect of the present invention is the route guiding device according to any one of the first to third aspects, in which the storage means stores information about the mark of each intersection.
A reading means is provided for reading out information about the landmarks of the intersection to be guided from the stored information about the landmarks of the intersection when the approach of the intersection to be guided is detected.

[0012]

According to the route guiding device of claim 1 of the present invention,
Display the recommended route on the screen and guide, the approach of the intersection to be guided is detected, and when the approach of the intersection to be guided is detected, information about the landmark of the intersection to be displayed is displayed,
When you pass an intersection that you should guide, the information about the displayed landmark will be deleted. Therefore, when you approach the intersection that you should guide, the information about the landmark at the intersection will be displayed on the map displayed on the screen, and after passing the intersection. Removes the information about that landmark.

In the route guidance device according to the second aspect of the present invention, the recommended route is displayed on the screen for guidance, the approach of the intersection to be guided is detected, and the guidance is given when the approach of the intersection to be guided is detected. Since the information about the landmark of the intersection to be guided is voice-guided, the information about the landmark of the intersection is voice-guided when approaching the intersection to be guided.

In the route guidance device according to claim 3 of the present invention, in the route guidance device according to claim 1, when the approach of the intersection to be guided is detected, the information about the mark of the intersection to be guided is voice-guided. Therefore, when approaching an intersection to be guided, information about a mark at the intersection is displayed and voiced.

In the route guiding device according to claim 4 of the present invention, in the route guiding device according to any one of claims 1 to 3, the information about the mark of each intersection is stored, and the approach of the intersection to be guided is detected. Then, the information about the intersection mark to be guided is read out from the stored information about each intersection mark, and thus the information about the intersection mark to be guided is obtained from the stored information about each intersection mark. be able to.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a route guidance device according to the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a configuration example of a route guidance device for carrying out the present invention.

In FIG. 1, the route guidance device is a man-machine interface device 1, a route calculation device 3, a position detection device 5, a GPS antenna 7, a GPS receiver 9, a vehicle speed sensor 11, and an angular velocity sensor 13. Remote control key 1
5. Overall monitoring device 17, route guidance device 19, CD data read control device 21, CD device 23, display device 2
5 and an audio output device 27.

The man-machine interface device 1 is a remote control key 15 for the driver to perform an input operation on the route guidance device.
It is connected to the.

The GPS antenna 7 for receiving the current position information of the vehicle from the GPS is connected to the GPS receiver 9 and
A receiver 9 and a vehicle speed sensor 11 that detects the vehicle speed and obtains the moving distance of the vehicle, and an angular velocity sensor 13 that detects the traveling direction of the vehicle.
Is connected to the position detection device 5.

A CD device 23 equipped with a CD storing information (landmark information) attached to an intersection is connected to a CD data read control device 21 for controlling the CD device 23, and the CD data read control device 21 is a man-machine. It is connected to the interface device 1, the route calculation device 3, the position detection device 5, the traveling monitoring device 17, and the route guidance device 19. The travel monitoring device 17 that monitors the travel of the vehicle is a route guidance device 19 that issues a route guidance instruction based on the obtained travel information.
It is connected to the.

Display device 25 displaying a recommended route A voice output device 2 for outputting a voice for guiding an intersection when guidance should be given.
Reference numeral 7 is connected to the man-machine interface device 1.

The route calculation device 3, the position detection device 5, the traveling monitoring device 17, and the route guidance device 19 are connected to the man-machine interface device 1.

When the driver inputs a destination to the man-machine interface device 1 using the remote control key 15, the route calculator 3 calculates a recommended route to the destination. Current position information of the vehicle by GPS received by a GPS receiver 9 having a GPS antenna 7, and current position information of the vehicle calculated from the moving distance of the vehicle by a vehicle speed sensor,
The traveling direction of the vehicle measured by the angular velocity sensor 13 is sent to the position detection device 5. While the vehicle is traveling, the position detecting device 5 can always obtain accurate current position information of the vehicle based on these information. Based on the current position information, the traveling monitoring device 17 monitors whether or not the vehicle is traveling on the determined recommended route.

FIG. 2 is a flowchart showing a part of the operation of the route guidance device of FIG. Hereinafter, the continuation of the operation of the route guidance device of FIG. 1 will be described with reference to the flowchart of FIG.

As the vehicle advances, the route guidance device 19 reads the recommended route to the destination calculated by the route calculation device 3 via the man-machine interface device 1 in step S201 (hereinafter, step is omitted), In S203,
Information that is attached to each intersection in the road map memory, that is, landmark information that is effective for identifying the intersection such as "signal light installed / not installed" and "facility on the side of the fork" for each intersection CD device 23 stored
The landmark information of each intersection on the recommended route is read by the CD data read control device 21 from the CD installed in the. Then, in S205, the route guidance device 19 searches for an intersection to be guided, and in S207, stores the data of the intersection to be guided in the memory.

When the traveling monitoring device 17 detects the approach of the next intersection to be guided in S209, the timing of guiding the intersection to be guided is measured in S211. When the guidance timing comes, in S213, the route guidance device 19 reads the landmark information of the intersection to be guided, and in S21.
If there is landmark information in 5, the read landmark information is transmitted to the man-machine interface device 1. In S217, the man-machine interface device 1 additionally displays the landmark information on the location screen displayed on the display device 25. Alternatively, the audio output device 27
Will give a voice guidance to the driver. You may provide guidance by both display and voice.

When the landmark information is additionally displayed in S217, when the traveling monitoring device 17 determines in S219 that the intersection to be guided is passed, the passage determination is transmitted to the man-machine interface device 1 to send the man-machine interface. The device 1 erases the display of the landmark information from the location screen.

If there is no landmark information in S215, nothing is displayed. FIG. 3 is a diagram showing a storage format of data at each intersection stored in the CD installed in the CD device 23.

In FIG. 3, a data storage destination pointer 41
Is a pointer that points to the storage destination of the data (# 1, # 2, ...) Of the road map data, particularly for each intersection. This number of points is equal to the number of intersections stored in the CD installed in the CD device 23.

Each data storage destination pointer 41 includes an intersection type 43, an intersection branch number 45, an intersection position X coordinate 47, an intersection position Y coordinate 49, an intersection approach road information 51, an intersection exit road information 53, and an intersection auxiliary information 55. .

The intersection type 43 stores data on the types of intersections such as a level intersection, an overpass intersection, and an underpass intersection. The number of intersections 45 stores the number of branches at the intersection. Intersection position X coordinate 4
7 and the intersection position Y coordinate 49 store the X coordinate and the Y coordinate representing the position of the intersection.

The intersection approach road information 51 stores information about an approaching travel route (entry road) to the intersection. The intersection approach road information 51 includes road link type 57, road type 59, and road approach angle 61. And width 63.

The road link type 57 stores the road link of the approach road. A road link is a certain road section for determining a recommended route or the like. Generally, links between adjacent intersections are used as links. The road type 59 stores the type of approach road. The road type is a type of road such as a highway, a national road, and a prefectural road. The road approach angle 61 stores the approach angle of the approach road to the intersection. The width 63 of the approach road is stored in the width 63.

The intersection exit route information 53 stores information on the exit travel route (exit route) from the intersection. The number of the intersection exit route information 53 is equal to the number of branches of the intersection, and each intersection exit route. The information 53 includes a road link type 57, a road type 59, a road exit angle 65, and a width 63.

The exit link is stored in the road link type 57. The road type 59 stores the road type of the exit route. The road exit angle 65 stores the exit angle from the intersection on the exit road. The width of the exit road is stored in the width 63.

The information attached to the intersection is stored in the information attached to the intersection 55.
It includes intersection name data 67, the number of landmarks 69, and a landmark storage destination pointer 71.

The name of the intersection is stored in the intersection name data 67. The number of landmarks 69 stores the number of landmarks at the intersection.

The landmark storage destination pointer 71 is a pointer that indicates the storage destination of the data regarding the landmarks (# 1, # 2, ...) At the intersection, and the number of points is equal to the number of landmarks.

Each landmark storage destination pointer 71 includes a landmark type 73, a landmark position X coordinate 75, a landmark position Y coordinate 77, and a positional relationship 79 between intersections.

The type of landmark is stored in the landmark type 73. The types of landmarks include traffic lights, gas stations, banks, convenience stores,
The type of things such as bridges, railroad crossings, and overpasses that mark the intersection.

In the landmark position X coordinate 75 and the landmark position Y coordinate, the X coordinate and the Y coordinate representing the position of the landmark are stored. The positional relationship 79 between the landmark and the intersection is stored in the positional relationship 79 with the intersection.

FIG. 4 is a diagram showing a specific example before the landmark is displayed on the location screen (display screen displaying a map near the intersection to be guided).

In FIG. 4, on the location screen, the recommended route 101 and the current position 103 of the vehicle indicated by the bold solid line are shown.
And an intersection 105 to be guided are displayed. The reason why the recommended route is shown by a thick solid line here is to distinguish it from other roads. As another method, for example, there is a method of coloring the recommended route.

On the location screen, a plurality of map symbols such as stations, parks and factories are also displayed.

Now, it is assumed that the current position of the vehicle is approaching the intersection 105 to be guided next according to the recommended route 101.

FIG. 5 is a diagram showing a specific example at the time of intersection guidance in which a landmark is displayed on the location screen.

In FIG. 5, the location screen includes a recommended route 101, the current position 103 of the vehicle, an intersection 105 to be guided next, and a landmark 107. In the case of this example, landmark information that the gas station (GS) is at the left front corner of the intersection and the bank is at the right corner of the intersection is stored in the intersection data storage format shown in FIG. Details are stored in the intersection attached information 55.

When the current position 103 of the vehicle further approaches the intersection 105 to be guided next from the state of FIG. 4, G. S. And the bank 107 is displayed, and it is very easy to understand which intersection is to be guided next.

When the current position 103 of the vehicle turns left at the intersection 105 to be guided next and passes by, the landmark information G. S. The bank 107 is deleted, the display on the location screen does not increase, and the location screen is easy to view without excessive information.

In this way, if the landmark information is guided by voice, it is possible to easily identify the guided intersection without increasing the number of display elements such as map symbols on the location screen.

FIG. 6 is a diagram for explaining the guide contents when the landmark information is guided by voice.

In FIG. 6, the right column shows the guide contents corresponding to the types of landmarks shown in the left column.

When the landmark information is guided by voice regardless of the display, the guidance is, for example, "Left at the next intersection with GS in your left hand." This is because the type of landmark is G. S. It is the pattern of voice guidance in the case of the above example. Another example of voice guidance according to the type of landmark is when the landmark type is a traffic signal, for example, "the next signalized intersection is to the right." When the landmark type is a bridge, railroad crossing, or viaduct, for example, "the next intersection beyond this bridge (railroad crossing, viaduct, etc.) is to the right".

By guiding the landmark information both by display and voice, it becomes easier to identify which intersection is pointing. In this case, the remote control key 15 shown in FIG. 1 may be used to switch and select guidance by display or voice only, or guidance by both display and voice.

The above operation is repeated at each intersection on the recommended route to the destination.

[0057]

According to the route guiding device of the first aspect of the present invention, when the recommended route is displayed on the screen for guidance, the approach of the intersection to be guided is detected, and the approach of the intersection to be guided is detected. The information on the landmark of the intersection to be guided is displayed, and the information on the landmark displayed is erased when passing through the intersection to be guided, so when you approach the intersection to be guided, the intersection on the map displayed on the screen Is displayed, and the mark is deleted after passing the intersection.

As a result, the number of display elements on the map displayed on the screen does not always increase, and the intersection to be guided is easy to understand.

In the route guidance device according to the second aspect of the present invention, the recommended route is displayed on the screen for guidance, the approach of the intersection to be guided is detected, and the guidance is provided when the approach of the intersection to be guided is detected. Since the information about the landmark of the intersection to be guided is voice-guided, the information about the landmark of the intersection is voice-guided when approaching the intersection to be guided.

As a result, the intersection to be guided can be easily specified without increasing the number of display elements on the map displayed on the screen.

In the route guidance device according to claim 3 of the present invention, in the route guidance device according to claim 1, when the approach of the intersection to be guided is detected, information about the mark of the intersection to be guided is voice-guided. Therefore, when approaching an intersection to be guided, information about a mark at the intersection is displayed and voiced.

As a result, since the display and voice guidance are provided, the driver can more easily identify the intersection to be guided.

In the route guiding device according to claim 4 of the present invention, in the route guiding device according to any one of claims 1 to 3, information about a mark at each intersection is stored.
When the approach of the intersection to be guided is detected, the information about the landmark of the intersection to be guided is read from the stored information about the landmark of each intersection. You can get information about landmarks that should be crossing.

As a result, it becomes possible to realize a more practical route guidance device by utilizing the information about the landmarks at each intersection.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration example of a route guidance display device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a part of the operation of the route guidance device of FIG. 1 according to the embodiment of the present invention.

FIG. 3 is a diagram showing a storage format of data at each intersection stored in the CD device 23 of FIG. 1 according to the embodiment of the present invention.

FIG. 4 is a diagram showing a specific example before displaying a landmark on a location screen in the route guidance device according to the embodiment of the present invention.

5 is a diagram showing a specific example at the time of intersection guidance in which a landmark is displayed on the location screen in the route guidance device of FIG. 1 according to the embodiment of the present invention.

[Fig. 6] Fig. 6 is a diagram for explaining guidance contents in the case of guiding the landmark information by voice according to the embodiment of the present invention.

[Explanation of symbols]

 1 Man-Machine Interface Device 3 Route Calculation Device 5 Position Detection Device 17 Travel Monitoring Device 19 Route Guidance Device 21 CD Data Read Control Device 23 CD Device 25 Display Device 27 Voice Output Device 107 Landmark Information (GS, Bank)

Claims (4)

[Claims] 1. A route guidance device which displays a recommended route on a screen and guides it, wherein the detection means detects an approach of an intersection to be guided, and the guidance is provided when the approach of the intersection to be guided is detected. A route guidance device comprising: a display unit that displays information about a landmark of a right intersection, and an erasing unit that erases information about the landmark displayed when passing through the intersection to be guided. 2. A route guidance device which displays a recommended route on a screen and guides it, wherein the detection means detects an approach of an intersection to be guided, and the guidance is provided when the approach of the intersection to be guided is detected. A route guidance device including a voice guidance unit for audibly guiding information about a landmark of a right intersection. 3. The route guidance device according to claim 1, further comprising voice guidance means for audibly guiding information about the landmark of the intersection to be guided when the approach of the intersection to be guided is detected. 4. A storage unit that stores information about landmarks of each intersection, and the intersection that should be guided from the stored information about the landmarks of each intersection when the approach of the intersection to be guided is detected. 4. The route guidance device according to claim 1, further comprising a reading means for reading information about the mark.