JP2697356B2 - Navigation system for moving objects - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation apparatus for a mobile object which displays a recommended route between a current position and a destination or a departure point and a destination on a map.

[0002]

2. Description of the Related Art FIG. 15 shows an example of a configuration of a conventional navigation device disclosed in, for example, Japanese Patent Laid-Open No. 2-28800. In the drawing, reference numeral 1a denotes a processing device as an example of a control unit. , RAM1
3 and an input / output interface (I / O) 14
Connected by 2a is a traffic information receiver as an example of an information receiver, and receives traffic information such as traffic congestion, construction, regulation, etc. from a traffic information center using a quasi-microwave system, an induction radio system, or an FM multiplex system. .

[0003] Reference numeral 3a denotes a compact disk player, which is an external storage device dedicated to reading which stores a road map, and is mainly a CD / ROM at present because of its large storage capacity and high reading speed. . Reference numeral 4 denotes a processing device 1a for processing map data of the compact disk player 3a or traffic information received by the traffic information receiver 2a.
, And is converted into an image signal and displayed, for example, a CRT or an LCD. Reference numeral 5 denotes an operation input unit such as a key switch or a touch switch operated by a driver or the like.

[0004] Reference numeral 6 denotes a self-contained navigation type position sensor, which comprises an azimuth sensor and a distance sensor. These sensor signals are subjected to arithmetic processing by the processor 1a to specify the current position of the moving body.

Next, the operation will be described with reference to the flowchart of FIG. In step S1, a departure point, a destination point designation, a route selection condition, and the like are input, and map information according to the input data is read out from the compact disc player 3a and displayed on the display unit 4. Here, if a route selection condition (for example, the shortest distance, the shortest time, and the like) is selected, the processing device 1a searches for a candidate route.

In step S2, it is determined whether a candidate route has already been input. If a candidate route has not been input, the process proceeds to step S3, and a candidate route is input from the operation input unit 5. Step S4 is a step for performing a search by adding a restriction condition (search within a certain distance from the candidate route) for searching for another route to the candidate route input in step S3, and step S5. The most recommended route is selected from the routes searched in step S4 based on the traffic information input from the traffic information receiver 2a and the route selection condition. The selected route is indicated by 30 in FIG. It is displayed on the display 4 as shown.

In step S7, it is determined whether or not the moving object has reached the destination. If the vehicle does not arrive at the destination, the process returns to step S1 and repeats the above routine. At this time, however, in step S2, since the candidate route has already been input, the process proceeds to step S8.

If there is no change in traffic information or there is no route selection condition, the process returns to step S1, but if there is a change in condition, the process proceeds to step S5, where a re-search is performed, and a change display is performed again in step S6. . This display example is shown in FIG.
(B). In this figure, as a result of receiving the traffic jam information by the traffic information receiver 2a, a traffic jam is displayed,
The recommended route has been changed, and the fact that an accident has occurred at 42 points is displayed. As a result, the current position 41 of the moving body
The recommended route from to the destination is re-searched as indicated by 40 and displayed.

[0009]

The conventional navigation apparatus for a mobile body is constructed as described above, searches for a recommended route (recommended route) between the current position and the destination, displays a color change or the like, or displays an accident. Since only information is displayed and the space of the display mounted on the vehicle is limited, the display area is small and the amount of information is also limited. For example, a display screen of about 6 inches which is currently mainly used has a problem of visibility, and can display only about 15 character strings. Therefore, the information amount of the recommended route of the corner angle is small, On a land where geography is unknown, there is a problem that information on the current location of the moving object, intersections, and targets along the road cannot be recognized.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is easy to confirm information on a recommended route, and it is also possible to easily confirm a current position of a moving body, and to surely and reliably recommend a route. The purpose of the present invention is to obtain a mobile navigation device that can travel.

[0011] Further , it is easy to confirm information on recommended routes.
And inform the user of necessary information
It is an object of the present invention to obtain a navigation device for a mobile object that can perform the navigation.

[0012]

SUMMARY OF THE INVENTION A navigation apparatus for a mobile object according to the present invention is a map data storing map data.
Data storage unit, moving object position detection that detects the current position of the moving object
From the operation input section to set the destination of the
A route search unit that calculates a recommended route to the destination;
Equipped with an indicator that displays the figure data, current location, and recommended route
Of the roads other than the recommended route displayed on the display,
The road type of the road determined according to the road type of the recommended route
The display is restricted .

[0013] In addition, the expressway does not restrict the display .

[0014] Further , map data and information data are stored.
Map data storage unit, mobile unit that detects the current location of the mobile unit
Position detection unit, operation input unit for setting the destination of the mobile unit, output
A route search unit that calculates a recommended route from the origin to the destination,
Display map data, information data, current location and recommended route
Display and an information receiver for receiving external information.
Information data related to the recommended route displayed on the display
Limit the display of information data other than data
External information received by the receiver is related to the recommended route.
Even if there is no external information, the display is not restricted .

[0015] Also, map data and information data are stored.
Map data storage unit, mobile unit that detects the current location of the mobile unit
Position detection unit, operation input unit for setting the destination of the mobile unit, output
A route search unit that calculates a recommended route from the origin to the destination,
And map data, information data, current location and recommended route
The display has a display, and the recommended route displayed on the display
Display of information data other than information data related to
That the map data is not related to the recommended route
Even if it is data, the display is not limited .

[0016]

According to the present invention, a navigation apparatus for a mobile object is provided for selecting a road other than a recommended route displayed on a display device.
The road type of the road determined according to the road type of the recommended route
Because the display is restricted, unnecessary road types
Recommend recommended routes by limiting the display of routes
Things .

[0017] The recommended route displayed on the display is related to the recommended route.
Display of information data other than the related information data
And the external information received by the information receiving unit
Do not restrict the display of external information that is not related to the recommended route.
Therefore, even if the information is not related to the recommended route,
Information is displayed .

The recommended route displayed on the display device is
Display of information data other than the related information data
And map data that is not related to the recommended route
Data is not restricted, so it is related to the recommended route.
The map data without the mark is also displayed .

[0019]

Embodiments of the present invention will be described below. First, a first embodiment of the present invention will be described.
In FIG. 1, reference numeral 1 denotes a control unit including a moving object position detection unit 101, a route search unit 102, and a display control unit 103, and an information receiver for receiving external information, such as a traffic information receiver. 2, a map data storage unit 3 storing road data and information data, such as a compact disc player, a map and information data read from the map data storage unit 3, and a moving object position detection unit 10
The current position of the moving object calculated in step 1, the recommended route searched by the route search unit 102, or the external information received from the information receiver 2 is displayed via the display control unit 103, for example, like a CRT or LCD. A display unit 4 such as a key input unit or the like, an operation input unit 5 operated by a driver or a user, a distance sensor 61 for calculating a current position of a moving body,
The direction sensor 62 and the position information receiver 63 are connected.

The assessment of the current position of the moving body is performed at a mobile position detection unit 101 is, for example vehicle speed pulse, the distance sensor 61, such as wheel speed pulses, geomagnetic sensor, the rough position of the data of the azimuth sensor 62 such as a gyro In order to find and cancel the accumulation of each sensor error, the map data storage unit 3
The accuracy can be further improved by using the map matching technology for evaluating the current position with reference to the road data stored in the. Further, for example, beacons, G
If the data of the absolute position coordinates is obtained by using a PS (Global Positioning System) or the like, higher accuracy can be obtained, but the system price increases.

When going to a specific destination, a destination is selected and set from the operation input unit 5. The destination can be set by displaying the map data in the map data storage unit 3 on the display unit 4 and specifying a point on the map using the operation input unit 5 or displaying a list of information data on the display unit 4. , Selected and set by the operation input unit 5. When a specific point is set as the departure point, the departure point can be set in the same manner.

When the departure place and the destination are set, and the search condition is set by the operation input unit 5, the data in the map data storage unit 3 is read, and the route search unit 102 calculates the route according to the condition and displays it. Is displayed on the container 4. The search condition is generally, for example, the shortest distance, the shortest time, or the like, but may be a condition depending on information such as a tourist spot or gourmet.

After the recommended route is searched, the display 4 displays a recommended route that can be distinguished from other roads, for example, by changing the color of the road or increasing the line width, and displaying data on the recommended route. The information data matching the search condition is displayed on the display 4.

The operation of setting a specific departure point and displaying a recommended route and information to the destination will be described with reference to the flowchart of FIG. In step S101, a departure place is set by the operation input unit 5. In step S102, it is determined whether to set a destination. If the destination is not set, the process ends with the display of the departure place or the display of the current location of the moving object.

The effect of the first embodiment of the present invention is that the destination is input, and the destination is input from the operation input unit 5 in step S103. In step S104, it is determined whether or not to search for a route to the destination. If the route search is not performed, the process ends. When performing a route search, search conditions are set from the operation input unit 5 in step S105. Of course, it is also possible to incorporate the specific search condition into the program and to eliminate the troublesome input.

In step S106, data is read from the map data storage unit 3 according to the set search conditions between the set departure place and destination, and the route search unit 102 performs a route search. In the route search, a plurality of recommended routes may be searched, and may be set on a program or set in step S105 depending on the search time. If the search is completed in step S107, step S10
At 8, the best recommended route is displayed on the display 4. In this case, the recommended route is displayed with some means such as color coding or thickening the line segment in order to easily distinguish the recommended route from other roads.

In step S109, information data not related to the recommended route displayed as described above is deleted. In this case, whether to delete all the information data displayed so far may be determined by the map data and the program.
For example, it is only necessary to leave a reference for the traveling of the moving body even from a considerable distance such as Mt. Fuji, Tokyo Tower, and the airport.

An example of the screen of the display 4 is shown in FIGS. FIG. 3 shows a screen after step S103 in which the starting point and the destination are set on the map. Here, it is not necessary that the origin and destination are displayed on the screen at the same time,
In some cases, there is no need to display a map in this step.
FIG. 4 is a step S10 displaying the recommended route 50 after FIG.
It is an example of a screen after eight. FIG. 5 is an example of a screen after step S109 in which the display of the information data having little relation with the recommended route is restricted. If emergency information such as a traffic accident is obtained from the information receiver 2, it may be displayed on the screen. If there is a traffic accident on the recommended route, a second recommended route is displayed and the same as above. Just do the thing. It goes without saying that the current location of the moving object can be displayed at the same time.

Next, a second embodiment of the present invention will be described. In the first embodiment, among the information data displayed in advance, information data (thin) not related to the recommended route is deleted. However, as shown in the flowchart of FIG. 6, steps of the flowchart of FIG. Step S110 is added instead of S109, and more detailed information data related to the recommended route stored in the map data storage unit 3 is additionally displayed on the display unit 4. FIG. 7 shows an example in which detailed information data on a recommended route is added. In the drawing, reference numerals 51 to 58 denote new detailed information data on a recommended route.

Next, a third embodiment of the present invention will be described. FIG. 8 is a combination of the flowcharts of FIG. 2 and FIG. 6, and displays the recommended route (step S108).
), And deletes information that is not related to the recommended route (step S).
109), and displays detailed information data related to the recommended route (step S110). FIG. 9 shows an example of a screen according to this embodiment, which is obtained by combining FIGS. 5 and 7.

Next, a fourth embodiment of the present invention will be described. In the fourth embodiment, as the above-described embodiment, it is also possible to limit the display of the road in order to improve the visibility by the type of the recommended route. As an example of the road type, a case in which a highway is included in the recommended route will be described with reference to the flowchart of FIG.
After the recommended route is determined, the road type of the recommended route is read in step S201. In step S202, it is determined whether or not there is a highway on the recommended route. If not, the process ends. If the highway has been selected as the recommended route, the general road is deleted in step S203. In the above example, as a condition for restricting the road display, the road type of the recommended route is a highway, but it may include a main road such as a national road or a prefectural road. FIG. 11 shows a display example of this embodiment when the road type is set to the national road and the highway.

Next, a fifth embodiment of the present invention will be described. In the fifth embodiment, a step S204 is added after the step S203 in FIG. 10 as shown in the flowchart in FIG. 12, and the detailed information data 51 to 58 related to the recommended route shown in FIG. 7 or FIG. S
At 204, additional display may be performed.

Next, a sixth embodiment of the present invention will be described. As a sixth embodiment, a case will be described in which information regarding the current location of the moving object is additionally displayed. The evaluation of the current location is as described in the first embodiment, and the distance sensor 61 and the direction sensor 62 shown in FIG.
The current location of the moving object is determined in consideration of the data in the map data storage unit 3. The position information receiver 63 may be required due to accuracy problems, and may include position information as data of the information receiver 2. Therefore, the system may not include the position information receiver 63 and the information receiver 2, but the system of FIG. 1 will be described with reference to the flowchart of FIG.

In FIG. 13, the current position of the moving object is displayed on the display 4 on the map by steps S301 and S302. As described above, since the screen size of the display 4 is limited, not all information data can be displayed. Therefore, it is determined in step S303 whether or not there is detailed information data near the current location of the moving object. If there is undisplayed detailed information data, additional information is displayed on the display 4 in step S304. Further, the detailed information data separated from the current position by a predetermined distance (Xm) or more according to the traveling of the moving object is stored in step S30
In step 5, the information is erased from the display 4 screen. As detailed information data, in addition to geographical data such as intersection names, place names, and town names, there are also landmarks such as gas stations along roads. It is necessary to consider the priority and the display position of the information data.

This effect is also effective in a system without the route search unit 102 shown in FIG. FIG. 14 shows a display screen of this embodiment. In the figure, the current position of the moving object is indicated by a circled arrow, and 54 and 55 are detailed data near the current position of the moving object. Alternatively, the intersection name of the passing point of the moving object may be displayed on the display 4, for example, at a position 59 on the lower side of the screen.

Next, another embodiment of the present invention will be described. In the above example, the signals of the distance sensor 61 and the azimuth sensor 62 are taken into the moving object position detection unit 101 as shown in FIG. 1, but the present invention can also be applied to the case of only the position information receiver 63 such as GPS. Needless to say, of course.

[0037]

As described above, according to the present invention, the display device
Of the roads other than the recommended route displayed above, the road of the recommended route
Restrict display of roads of road type determined according to road type
Display unnecessary road types.
Restrictions can make it easier to see recommended routes.
And the display of roads of the required road type is restricted.
There is no recommended route on the screen relative to other roads
Easier to check relationships and recognize recommended routes on screen
Is easy .

Further, the recommended route displayed on the display is
Display of information data other than the related information data
And the external information received by the information receiving unit
Do not restrict the display of external information that is not related to the recommended route.
Therefore, even if the information is not related to the recommended route,
Is displayed, and even if the display has been simplified,
Users should drive safely while checking external information
Can be done .

In addition, the recommended route displayed on the display is
Restrict the display of information data other than the related information data,
In addition, even if the map data is not related to the recommended route, it is displayed
Limit the display of unnecessary information data.
Makes it easier to see information data related to the recommended route
And improve the estimation based on the displayed map data.
You can grasp the position of the recommended route, and the recommended route screen
This facilitates the above recognition .

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a navigation device for a mobile object according to the present invention.

FIG. 2 is a flowchart showing an operation of the navigation apparatus for a mobile object according to the first embodiment of the present invention.

FIG. 3 is a diagram illustrating an example of a display screen when a departure place and a destination are set, for explaining the operation of the first exemplary embodiment of the present invention.

FIG. 4 is a diagram for explaining the operation of the first embodiment of the present invention;
It is a figure of the example of a display screen of a recommended course.

FIG. 5 is a diagram of an example of a display screen on which information data irrelevant to a recommended route has been deleted for explaining the effect of the operation of the first exemplary embodiment of the present invention.

FIG. 6 is a flowchart showing an operation according to the second embodiment of the present invention.

FIG. 7 is a diagram of an example of a display screen to which detailed data related to a recommended route has been added, for explaining the effect of the operation of the second embodiment of the present invention.

FIG. 8 is a flowchart showing an operation according to a third embodiment of the present invention.

FIG. 9 is a view for explaining the effect of the operation of the third embodiment of the present invention.
It is a figure of the example of a display screen to which the detailed data related to the recommended route was added.

FIG. 10 is a flowchart showing an operation according to a fourth embodiment of the present invention.

FIG. 11 is a diagram illustrating an example of a display screen on which a road type of a recommended route is determined and unnecessary road data is deleted, explaining an effect of the operation of the fourth embodiment of the present invention.

FIG. 12 is a flowchart showing an operation according to a fifth embodiment of the present invention.

FIG. 13 is a flowchart illustrating an operation according to a sixth embodiment of the present invention.

FIG. 14 is an example of a display screen for explaining the effect of the operation of the sixth embodiment of the present invention, in which detailed data around the current position of the moving object is additionally displayed.

FIG. 15 is a block diagram showing one embodiment of a conventional navigation device for a mobile object.

FIG. 16 is a flowchart showing the operation of a conventional navigation device for a mobile object.

FIG. 17 is a diagram showing an example of a display screen of a conventional navigation device for a mobile object.

[Explanation of symbols]

 3 map data storage unit 4 display unit 5 operation input unit 50 recommended route 51 to 59 detailed information data 61 distance sensor 62 direction sensor 63 position information receiver 101 moving object position detection unit 102 route search unit

 ──────────────────────────────────────────────────の Continuation of the front page (72) Inventor Tomoda Yoshida 2-33 Miwa, Mita City, Hyogo Prefecture Inside the Mita Works of Mitsubishi Electric Corporation (72) Inventor Koji Fujii 2-33 Miwa 3-chome, Mita City, Hyogo Prefecture No. Mitsubishi Electric Control Software Co., Ltd. Himeji Office Mita Branch (56) References JP-A-64-14315 (JP, A) JP-A-62-293613 (JP, A) JP-A-62-293614 (JP, A) A) JP-A-61-66920 (JP, A)

Claims (4)

(57) [Claims] 1. A map data storage unit for storing map data, the moving position detecting unit that detects the current position of the moving body, moving
Operation input section to set the destination of the body, the above destination from the starting point
A route search unit that calculates a recommended route to the ground;
Display that shows the map data, the current location, and the recommended route
Road other than the recommended route displayed on the above display
Of the roads, roads determined according to the road type of the above recommended route
A navigation device for a mobile object , wherein display of a road of a road type is restricted . 2. The expressway does not restrict display.
The navigation device for a mobile object according to claim 1, wherein 3. A place for storing map data and information data.
Figure data storage unit, moving body position to detect the current location of the moving body
Detection unit, operation input unit for setting the destination of the moving object, departure place
A route search unit that calculates a recommended route from the above to the destination,
The map data, the information data, the current location, and the
Indicator for displaying recommended routes and receiving external information
A recommended route that has an information receiving unit and is displayed on the display unit
Display of information data other than information data related to
And the external information received by the information receiving unit.
Information is displayed even if it is external information not related to the recommended route.
A navigation device for a mobile object, which is not limited . 4. A place for storing map data and information data.
Figure data storage unit, moving body position to detect the current location of the moving body
Detection unit, operation input unit for setting the destination of the moving object, departure place
A route search unit that calculates a recommended route from the above to the destination,
And the map data, the information data, and the current location
An indicator for displaying the recommended route is provided.
Information other than information data related to the recommended route displayed in
Limit the display of data and the above map data
Restrict display even for map data not related to recommended route
A navigation device for a mobile object, characterized in that it is not used.