JP3283617B2 - 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 searches for a recommended route from a current position to a destination and displays the searched recommended route.

[0002]

2. Description of the Related Art FIG. 5 is a block diagram showing a conventional navigation apparatus for a mobile body disclosed in, for example, Japanese Patent Application Laid-Open No. 2-28800. In the figure, reference numeral 10 denotes a processing unit which performs overall control of the navigation apparatus for a mobile object,
An arithmetic processing unit (hereinafter referred to as a CPU) 101, a read-only memory (hereinafter referred to as a ROM) 102, a rewritable memory (hereinafter referred to as a RAM) 103, and an input / output interface (hereinafter referred to as an I / O) 104 are connected by a bus 105. Reference numeral 11 denotes a traffic information receiver that receives traffic information such as traffic congestion, construction, rules, and the like from a traffic information center using a quasi-microwave system, a guided radio system, or an FM multiplex system.

A compact disk player (hereinafter referred to as a CD) 12 for reading a CD-ROM, which is a read-only external storage means storing map data of a road map.
-Referred to as a ROM player). 13 is the CD-R
A cathode ray tube display (hereinafter referred to as a CRT display) in which map data read by the OM player 12 or a processing result of the processing device 10 that has processed the traffic information received by the traffic information receiver 11 is converted into an image signal and displayed. ). An operation unit 14 is operated by a driver or the like of the moving object, and an operation unit 15 includes an azimuth sensor and a distance sensor. Signals from these sensors are processed by the processing device 10 to specify the current position of the moving object. A self-contained navigation type position sensor for performing

Next, the operation will be described. Here, FIG.
Is a flowchart showing the flow of the operation. First,
First, in step ST21, designation of a departure point, a destination point, route selection conditions, and the like are input from the operation unit 14, a road map according to the input data is read out by the CD-ROM player 12, and the CRT display is read. 13 is displayed. Here, if a route selection condition (for example, the shortest distance, the shortest time, and the like) is selected, the processing device 10 searches for a candidate route. In step ST22, it is determined whether a candidate route has already been input. If no candidate route has been input, the process proceeds to step ST23,
A candidate route is input from the operation unit 14. Step S
T24 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 ST23. Next, according to the traffic information input from the traffic information receiver 11 and the route selection condition, step ST24 is performed.
The most recommended route is selected from the routes searched in step ST25, and the selected route is displayed on the CRT display 13 in step ST26. Next, in step ST27, it is determined whether or not the moving object has arrived at the destination. If the mobile object has arrived at the destination, the process ends.

On the other hand, if the vehicle does not arrive at the destination, the process returns to step ST21 to repeat the above-mentioned routine. At this time, since the candidate route has already been input, the result of the determination in step ST22 is that Proceed to ST28. In step ST28, the presence or absence of a change in traffic information or a change in route selection conditions is identified. If there is no change, the process returns to step ST21. on the other hand,
If there is a change in the condition, the process proceeds to step ST25.
The search is performed again, and the change display is performed again in step ST26. FIG. 7 shows a display example of the CRT display 13 at this time. In the figure, 70 indicates a recommended route, 71 indicates a current position, and 72 indicates an accident occurrence point. In the illustrated example, based on the result of the reception of the traffic jam information by the traffic information receiver 11, the traffic jam is displayed, the recommended route is changed, and the fact that an accident has occurred at 72 points is displayed. As a result, the recommended route from the current position 71 of the moving object to the destination is re-searched as indicated by 70 and displayed.

[0006]

Since the conventional navigation apparatus for a mobile body is configured as described above, if another new recommended route is searched after the recommended route search, the content of the previous recommended route information becomes All of them are deleted, and in order to see the same recommended route again, the user must re-enter the recommended route search conditions from the beginning and then search the route again, which is time-consuming and cumbersome. was there.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a navigation apparatus for a mobile body that can easily and quickly search for a recommended route and call a recommended route. I do.

[0008]

According to a first aspect of the present invention, there is provided a navigation apparatus for a mobile object, wherein information of a plurality of recommended route search conditions set by a setting unit when a search is performed by a route search unit includes a plurality of pieces of information. A route search condition storage unit that stores the recommended route search conditions, a selecting unit that selects one recommended route search condition from a plurality of recommended route search conditions having different departure points and destinations, and a recommendation selected by the selecting unit. Means for reading information on the route search condition, and a display unit for displaying the recommended route search condition, wherein the content of the displayed recommended route search condition can be reset on the display unit screen; and The route search unit is caused to search for a recommended route based on the changed recommended route search condition, and the recommended route is displayed on the display unit.

Further, the navigation apparatus for a mobile object according to the second aspect of the present invention further comprises a display control unit for displaying a list of a plurality of searched recommended route information.

[0010]

According to the first aspect of the present invention, the navigation apparatus for a mobile body stores information on a plurality of recommended route search conditions set by the setting unit when searching by the route search unit for a plurality of recommended routes. A route search condition storage unit, selecting means for selecting one recommended route search condition from a plurality of recommended route search conditions having different departure points and destinations, and reading information on the recommended route search condition selected by the selecting means Means, and a display unit for displaying the recommended route search condition, the contents of the displayed recommended route search condition can be reset on the display unit screen, and the changed recommended route search condition is displayed. Is used to cause the route search unit to search for a recommended route and to display the recommended route on the display unit. Such as when to be, there is no need to search and re-enter again from the beginning.

The display control unit according to the second aspect of the present invention displays the list of recommended route information that has already been searched, thereby facilitating the call, and furthermore, by confirming the contents thereof, the number of operations can be reduced. Enables reduction.

[0012]

【Example】

Embodiment 1 FIG. Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a navigation apparatus for a mobile object according to the present invention. In FIG. 1, 1
Is a direction sensor that detects a direction based on geomagnetism or the like, 2 is a distance sensor that detects the traveling distance of the moving object, and 3 is a global positioning system (hereinafter, referred to as GPS).
Is a GPS receiver that obtains position information from signals from satellites. Reference numeral 4 denotes a CD-ROM player as a storage unit having a CD-ROM in which a road map and map information on roads are stored as map data.

Reference numeral 5 denotes a setting unit for performing an operation input for displaying a map and searching for a route. Reference numeral 6 denotes a processing unit for performing overall control of the navigation apparatus for a moving object. In the setting section 5, 5A is a menu key for displaying a menu of function items, 5B is a scroll key for inputting an instruction for scrolling the displayed map up, down, left and right, and 5C is for performing various settings. Is a set key for
5D is a return key for instructing return to the previously displayed screen, and 5E is a map key for instructing map display. 5F is a departure point setting key for setting a departure point, 5G is a destination setting key for setting a destination, and 5H is a transit point setting key for setting a transit point. 5I is a search key for instructing a search for a recommended route, and 5J is a memory key for instructing storage of information on the searched recommended route.

In the processing unit 6, reference numeral 61 denotes current position information from the azimuth sensor 1, the distance sensor 2, the GPS receiver 3, etc., and the CD-ROM player 4 as a storage unit.
A route search unit 62 for searching for a recommended route between two points from the departure point or the current position set on the road map to the destination from the starting point or the destination set on the road map; 621 is a CPU having the function of 621. Reference numeral 63 denotes a ROM in which instructions necessary for the operation of the CPU 62 are stored, and 64 denotes a path selection unit 6 in the CPU 62.
21 is a route storage unit that stores information on the recommended route searched by 21. The route storage unit 64 includes a route search condition storage unit 641 and a recommended route storage unit 642. The route search condition storage unit 641 stores the content input by the setting unit 5, and the stored content includes a starting point (or current location), a destination, a transit point, a priority state of a toll road, and the like. This is not only stored, but can be reset even after the call. The recommended route storage unit 642 stores the route search unit 6
This is a part for storing the recommended route searched by the user 21 when he / she wants to store it. This recommended route storage unit 6
A plurality of recommended routes can be stored in the storage device 42, and can be called immediately without spending a search time.

Reference numeral 7 denotes an output unit to which information from the processing device 6 is output. Reference numeral 8 denotes information received from the route storage unit 64 or the like in the processing device 6 through the output unit 7 and converts it into data to be displayed. The display control unit 9 is a display unit that displays information from the display control unit 8 on a CRT display.

Next, the operation will be described. First, signals from the direction sensor 1, the distance sensor 2, and the GPS receiver 3,
Information on the current location is input to the input unit 61 based on the map data of the CD-ROM player 4 serving as a storage unit. Next, the departure place is set by operating the departure place setting key 5F of the setting unit 5, the destination is set by operating the destination setting key 5G, and the stopover is set by operating the stopover setting key 5H. Thereafter, by operating the search key 5I, the route search unit 621 in the CPU 62 receives the instruction from the ROM 63 and executes a route search. Information on the searched recommended route is output to the display control unit 8 through the output unit 7 and is output to the CRT display of the display unit 9. If it is desired to store the recommended route information searched here, the memory key 5 of the setting unit 5
By operating J, it is stored in the path storage unit 64. The stored recommended route information is displayed on the display unit 9 by the display control unit 8 in a list format.

The above is the basic operation when the recommended route display device of the first embodiment is applied to the navigation system. Next, the procedure in which the CPU 62 executes the processing according to the instruction of the ROM 63 will be described in detail.

FIG. 2 is a flowchart showing a procedure for searching for a route and storing recommended route information after the route search. First, in step ST1, an outline of the current location is determined based on current location information based on signals from the direction sensor 1, the distance sensor 2, and the GPS receiver 3, and the road read from the CD-ROM player 4 in the storage unit for correction. The current location is calculated with reference to the data. Next, in step ST2,
It is determined whether or not this device is currently searching for a route. If the device is searching for a route, the process proceeds to step ST7. If not, the process proceeds to step ST3. Step ST3
Then, it is determined whether or not the route search condition is to be set. If the route search condition is not to be set, step S
Proceed to T8. If the route search condition is to be set, the process proceeds to step ST4, and at least one destination for performing the route search is set in ST4. Then, in step ST5, conditions for the recommended route search are set. The recommended route search conditions include, besides the type of road,
Not only a search from the current location to the destination, but also conditions such as setting a waypoint during the search can be entered. In step ST6, a route search is performed according to the route search conditions set in steps ST4 and ST5. In step ST7, the end of this route search is detected,
If the route search has not been completed, the process returns to ST6, and the route search is continued. If the search has been completed, proceed to ST8,
The recommended route information searched in ST8 is stored in the route storage unit 6.
4 is determined. This determination is made based on whether or not the memory key 5J of the setting unit 5 has been operated. If the memory key 5J is operated during storage, the recommended route information is stored in the route storage unit 64 in step ST9. And end the operation. If not, the operation ends.

Next, the operation of displaying a list of recommended route information stored in the route storage unit 64 will be described with reference to the flowchart of FIG. First, in ST11, it is determined whether or not the recommended route information is stored in the route storage unit 64. If the recommended route information is stored, the process proceeds to ST12, and if not, the list display operation ends. In ST12, the display control unit 8 displays a list of a plurality of recommended route information stored in the display unit 9 in a list format. When the selection of the recommended route information is performed in step ST13 based on the displayed list display, the recommended route information selected in ST14 is displayed on the display unit 9 and the operation is ended.

FIG. 4 is an explanatory diagram showing an example of a display screen when a plurality of recommended route information is actually displayed in a list form on the screen. FIG. 4A shows that the display control unit 8 obtains recommended route information from the route storage unit 64, and
This is a list displayed on the T display. In this screen, the numbers "1" to "4" at the left end indicate the storage order. This has a function as a touch switch, and selects recommended route information to be displayed. In the place names in the list, the place name on the left side indicates the departure place, and the right side indicates the destination. “△” and “▽” at the right end of the screen are touch switches for scrolling the screen and displaying, for example, a list of storage order “5” or later, if any.

For example, when the touch switch "1" is pressed to select the route 1 from Mita to Sasayama, the screen shown in FIG. 4B is displayed. This screen displays a recommended route. In this screen, the circled "eyes" indicate the destination, the white arrow indicates the departure point, the car mark indicates the current location, and the triangle on the road indicates that this is the recommended route. Here, when you want to see the contents of the route search conditions, or when you want to change the setting contents when searching for a recommended route when passing through a point almost similar to this recommended route, it is displayed in the lower left corner. Operate the touch switch "condition". As a result, FIG.
Is displayed on the screen to set various conditions. The setting here includes a departure place, a destination, a transit point, and the like. After changing each content on this screen, operating the touch switch “search” at the lower left of the screen performs a route search, and FIG.
A screen displaying the recommended route as shown in (d) is displayed. When the memory key 5J of the setting unit 5 is operated after the recommended route is searched in this way, the currently displayed recommended route, surrounding road map information, and the route search condition are stored in the route storage unit 64. When the setting contents are not changed in the route search condition setting list, FIG.
When the touch switch “path” on the screen of FIG. 4 is operated, the screen of FIG. 4B is displayed.

[0022]

As described above, according to the first aspect of the present invention, information of a plurality of recommended route search conditions set by the setting unit when a search is performed by the route search unit is transmitted to the departure point and the starting point.
Route search condition storage unit for storing a plurality of recommended routes having different destinations and destinations, a selecting unit for selecting one recommended route search condition from the plurality of recommended route search conditions, and a recommended route selected by the selecting unit Means for reading the information of the search condition, and a display unit for displaying the recommended route search condition, wherein the content of the displayed recommended route search condition can be reset on the display unit screen, and this change The recommended route search condition is used to cause the route search unit to search for a recommended route and display the recommended route on the display unit.
When searching for a recommended route when passing through a point that is almost the same as the recommended route, there is no need to re-enter and search again from the beginning, and there is an advantage that a navigation device for a mobile body can be obtained that requires fewer operations. There is.

Further, according to the invention of claim 2, since the stored recommended route information configured to be listed in a list format, easily moving object calls the recommended route information stored There is an effect that a navigation device can be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a flowchart showing a flow of an operation of storing recommended route information in the embodiment.

FIG. 3 is a flowchart showing a flow of an operation of displaying a list of recommended route information in the embodiment.

FIG. 4 is an explanatory diagram showing an example of a list display screen in the embodiment.

FIG. 5 is a block diagram showing a configuration of a conventional navigation device for a mobile object.

FIG. 6 is a flowchart showing a flow of the operation.

FIG. 7 is an explanatory diagram showing an example of the screen display.

[Description of Signs] 4 Storage unit (CD-ROM player) 5 Setting unit 621 Route search unit 64 Route storage unit 8 Display control unit 9 Display unit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G01C 21/00-21/36 G01S 5/14 G08G 1/0969 G09B 29/00-29/10

Claims (2)

(57) [Claims] 1. A storage unit that stores a road map and map information related to roads as map data, and a route search unit that searches for a recommended route to a destination using the map data read from the storage unit. A setting unit for setting conditions for searching for the recommended route in the route search unit; and a plurality of recommended route search conditions set by the setting unit when searched by the route search unit. A route search condition storage unit for storing information about a plurality of recommended routes having different departure points and destinations ; a selection unit for selecting one recommended route search condition from the plurality of recommended route search conditions; Means for reading the recommended route search condition selected by the user, and a display unit for displaying the recommended route search condition, and displaying the content of the displayed recommended route search condition on the display unit. Movement characterized in that the setting can be reset on the screen of the unit, and that the route search unit performs a search for a recommended route based on the changed recommended route search condition, and displays the recommended route on the display unit. Body navigation device. 2. A display control unit according to claim 1, further comprising a display control unit for controlling a list display of information on a plurality of recommended routes stored in the route search condition storage unit on a display unit. Navigation device for mobile objects.