JPH0668387A - Navigation device for vehicle - Google Patents

Abstract

PURPOSE:To guide a target on a route with a name by displaying all routes after a route search. CONSTITUTION:This device is equipped with a route calculation part 22 which searches for the route on the basis of route setting conditions and a route guidance control part 26 which commands a display or speech guidance required for the guidance, and the control part is provided with a target name setting part 26a which sets the target name on the basis of target information read out of a guidance information storage part 10a according to current place information from the current position measurement part 12. A display part 28 displays the selected route on an all-route figure display with the display command from the route guidance control part and also displays the target name at the same time. Consequently, when vehicle is guided to a destination through a toll road such as a freeway, the names of entrance and exit interchanges of the freeway are displayed as targets on the route and the driver can travel in a familiar route up to there.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle navigation system for guiding a destination to a destination through a preset route, and particularly, in a route display after a route search from the present location to the destination, The present invention relates to a vehicle navigation device having a display function for recognizing a target such as an interchange name of an expressway, a well-known building, a place name, etc., which is a point on the way of a route.

[0002]

2. Description of the Related Art A vehicular navigation system has a display screen used when setting a route and a display screen that is opened automatically or in response to a driver's request at the time of guidance. When the conditions for route setting are entered on the route setting screen and the route search is started, a route search screen (route search diagram) displaying a detailed map including the route is opened. When the route search is completed, the all-routes display screen (wide area view) displayed in a form in which all the routes can be clearly identified is opened. The driver can visually and sensibly recognize and understand only the route from the current position to the destination from the wide area map. Then, the guidance start button is pressed to start the guidance guidance.

[0003]

By the way, as a result of the route search, the driver may have a familiar route halfway. Guidance guidance along such a familiar route is not necessary, and guidance guidance beyond that is sufficient. For example, in a route having a toll road such as an expressway, if a person is familiar with a route up to an interchange (hereinafter referred to as “inter”), a person who has traveled along the familiar route can drive with a margin. However, in the conventional navigation device, guidance guidance is provided even when the route to the interchange is well known. In addition, there is a problem that it is difficult to grasp the target on the route to the destination because all routes are displayed. An object of the present invention is to provide a vehicular navigation device that guides a target on a route by name on the entire route display after a route search.

[0004]

In order to achieve the above object, the present invention provides a map information and a target on a map in a vehicular navigation device that automatically performs route guidance according to a preset route. Storage means for storing guide information, route search means for performing route search based on the route setting conditions based on the map information, target name setting means for setting guide targets on the searched route, and all after route search. In addition to displaying the route map, a display means for displaying the target name on the route in the entire route map is provided.

[0005]

According to the present invention, when the route search is completed, the target name is set on the selected route. The guidance information of this target name is read and drawn on the entire route map. Thus, for example, when guiding to a destination via a toll road such as a highway, as a goal on the route,
By displaying the name of the boarding / alighting interchange on the expressway, if the driver is well acquainted with the way to the interchange, guidance to that point is unnecessary and the driver can travel on a familiar route.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a hardware configuration of a vehicle navigation device of the present invention. The vehicular navigation device includes a map information storage unit 10 in which navigation data required for route calculation, guidance data required for guidance, and the like, and a calculation unit 20 that controls the entire system.
And a voice control unit 30 which converts voice data into an analog signal according to a guidance command from the arithmetic unit 20 and drives the speaker 34 to output a guidance voice, and a driver's request or route guidance is automatically displayed on the screen. A display unit 28, an input unit 19 for inputting a destination and requesting route guidance, and a current position measuring unit 1 for determining the current position of the vehicle.
2 and a route storage unit 24 that stores route data calculated by the calculation unit 20 according to the destination. The map information storage unit 10 is a database in which all data such as map data and display guidance data necessary for route guidance are recorded. Among these data, the target guidance data and the display guidance data are stored in the guidance information storage unit 10a. It is stored.

The current position measuring unit 12 receives the position information of the vehicle received by the GPS receiver 14 using the satellite navigation system (GPS), the direction information detected by the direction meter 16, and the distance information detected by the range meter 18. , And the current position of the host vehicle based on the map information read from the map information storage unit 10, and the current position information is sent to the calculation unit 20. Here, the azimuth meter 16 detects the traveling azimuth of the host vehicle based on the geomagnetism. Further, the distance meter 18 detects the traveling distance based on the rotation speed of the wheels. The input unit 19 inputs a destination and a route setting condition, and a processing unit required for navigation according to the intention of the driver so that the driver can obtain guidance information by voice and / or screen display when needed. Instruct 20.

The calculation unit 20 calculates a route to the destination based on the map information read from the map information storage unit 10 and the current position information from the current position measurement unit 12, and stores the route data in the route storage unit 24. A route calculation unit 22, and a route guidance control unit 26 that automatically or by request signal performs voice guidance and / or display guidance based on the guidance information stored in the map information storage unit 10, the current location information, and the route information. It consists of

The route guidance control unit 26 searches for a route by the route calculation unit 22 and issues a display command for the route selected as a result to the display unit 28 to display it on the entire route diagram screen 40.
At the same time, the target name setting unit 26a, based on the target information read from the guidance information storage unit 10a based on the current location information from the current position measurement unit 12, obtains the boarding / alighting interchange name, the tunnel name, the bridge name, the famous building name, and the like. The target name is set, and the drawing of all route diagrams for the set target name is displayed on the display unit 2
8 and voice guidance of the target name is given by the voice control unit 3
Command 0.

The display unit 28 is composed of a color CRT or a color liquid crystal display and is provided in the instrument panel near the driver's seat. The driver can confirm the current location of the vehicle by looking at the section map and the intersection map, and obtain information about the route from now on, as well as the direction of the intersection such as the course change and the right and left turn at this intersection. Check. The display 28 includes a route setting screen based on map data and guide data processed by the route guidance control unit 26, a route search diagram screen, an all route diagram screen,
All screens necessary for navigation, such as section map screens and intersection map screens, are output in color.

Further, the above-mentioned screen is provided with function buttons for setting route guidance, guiding during route guidance, and switching screens. That is, the display unit 28 is provided with a touch panel corresponding to the button display,
The above operation is executed based on a signal input by button touch. The input signal generating means composed of the buttons and the touch panel constitutes the input section 19, but the detailed description thereof will be omitted here.

Particularly, on the all-routes diagram screen 40 displayed after the route search, as shown in FIG.
In addition to 0 and travel display 101, a target name display 102 is provided, and a function button for accessing from this screen is provided. In this example, the route is displayed in red, the route is displayed in the center of the upper part, the target name is displayed in the upper right, and the route change button 103, which is pressed when changing the route, is used as a function button in the lower part. The screen configuration is provided with a guidance start button 104 for performing the guidance.

When the route change button 103 is pressed, a route change setting screen (not shown) is opened, and route change conditions such as a destination, a passing point and whether or not to pass a toll road are input on this screen, Instruct route search. As a result, the entire route map shown in FIG. 2 is displayed again. In the all-route display example shown in the figure, it is indicated that the interchange on the toll road is “A IC” and the exit is “B IC”. The voice control unit 30 synthesizes a voice, a phrase, a sentence, a sound, and the like read from the voice storage unit 32 according to a voice guidance command from the route guidance control unit, and outputs the synthesized voice from the speaker 34. In the voice storage unit 32, voice guidance data such as operation guidance at the time of route setting, voice guidance data of a target name on the route, and guidance voice data necessary for voice guidance during route guidance are compressed and stored. . When the route guidance control unit 26 issues an instruction to display the entire route, the voice control unit 30 outputs the target name displayed on the entire route screen as guidance voice. In this example, as the target name guidance voice, for example, "It is a route through the high-speed Nagoya interchange" is output.

Next, the guide processing of the target name information of the calculation unit will be described. FIG. 3 shows a processing flow for guiding a boarding / alighting interchange name as the target name information. In addition, the inter
It is represented by "C". First, a route search is performed (S1), and a boarding / alighting IC name setting process is performed based on the selected route (S2). Next, the presence or absence of the IC name is judged (S3), and the IC
Exit if there is no name. On the other hand, if there is an IC name, that name is displayed on the screen of the entire route diagram. At the same time, the IC name guidance voice is output (S5). FIG. 4 shows a flowchart of the setting process of the boarding / alighting IC name. It is determined whether the vehicle will pass through the highway (S10), and if the vehicle will pass through the highway, which IC will be used to ride (S11). When there is no IC to get on, for example, when setting route guidance on an expressway, there is only an IC to get off, so the setting process of the IC to get off after S15 is performed. If there are ICs to ride, the number of the ICs is judged (S1
2). If there are two or more ICs to board, the IC closest to the current location on the route is set as the IC to board (S13).
If there is only one IC, that IC is set as the riding IC (S14).

Similarly, the IC name for getting off is set.
That is, it is determined whether there is an IC to get off (S1
5) If there are ICs to get off, the number is determined (S1).
6). If there are two or more descending ICs, set the IC closest to the current location on the route to the descending IC (S1
7). If there is only one IC, get off that IC I
It is set to C (S18).

[Brief description of drawings]

FIG. 1 is a block diagram showing a system configuration of a vehicle navigation device of the present invention.

FIG. 2 is a diagram showing an example of a screen display of an entire route map.

FIG. 3 is a flow chart for performing a guidance process for getting on and off an interchange name.

FIG. 4 shows a flowchart for setting processing of a boarding / alighting interchange name.

[Explanation of symbols]

10 map information storage unit, 12 current position measurement unit, 14
GSP receiver, 16 direction sensor, 18 distance sensor,
20 calculation unit, 22 route calculation unit, 26 route guidance control unit, 26a target name setting unit, 28 display unit, 30 voice control unit, 32 voice storage unit, 40 total route diagram, 100
Guided route (all route display), 101 journey display, 1
02 Goal name display

Claims (1)

[Claims] 1. In a vehicle navigation device for automatically providing route guidance according to a preset route, a storage means for storing map information and target guide information on a map, and based on the map information. A route search means for performing a route search according to the route setting condition, a target name setting means for setting a guidance target on the searched route, and an entire route map after the route search are displayed, and the route map is displayed on the entire route map. A vehicle navigation device comprising: a display unit that displays a target name.