JPH11132781A - Navigation device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation device for vehicle capable of satisfactorily guiding road. SOLUTION: This navigation device for vehicle measures a current position, reads map information from a memory device based on the results of measurement and guides a course. A display device 13 for guiding and displaying course is positioned in front of a driver within a driver's visual field in the vehicle. A system controller controls in such a manner that a shape of a road which is blinded and through which a vehicle can pass is displayed by the display device 13 through a three-dimensional skeleton display or wire frame display.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device for a vehicle, and more particularly to a navigation device for a vehicle capable of performing a good route guidance.

[0002]

2. Description of the Related Art Map information is stored in a storage device, and detection signals from a group of traveling state detection sensors such as an azimuth sensor, an angular velocity sensor, and a distance sensor installed in a vehicle, and a device called a GPS uses a latitude from a satellite. And a position signal such as longitude information, and either or both of the detection signal and the position signal, measure the current position of the vehicle, and read map information from the storage device based on the measurement result. Various types of vehicle navigation devices for displaying the current location on a display device have been put into practical use (for example, see Japanese Patent Application Laid-Open
-88831).

[0003] Such a vehicular navigation device is provided with driving information (for example, in the vicinity of the current location or in response to a request of a user (for example, a driver) according to the present location that changes every moment.
The distance and elapsed time from the departure point, the distance to the destination, the estimated arrival time, and route guidance when the driver sets the route in advance are read from the storage device, and the liquid crystal display element (L) is read.
An arrow, an arrow, and the like are included in map information displayed on a display device such as a CD) or a cathode ray tube (CRT) or in enlarged map information.
It is a planar display showing a combination of graphics such as symbols, characters, numbers, and symbols (for example, Japanese Patent Application Laid-Open No.
No. 16988).

[0004]

According to the driving information,
For example, if the distance and the elapsed time from the starting point, the distance to the destination, the estimated arrival time, etc., which do not involve great difficulty in interpretation, the flat display may be used. It is not an exaggeration to say that the quality of reading determines the utility value of a vehicle navigation device, and a display that is easy for the driver to understand is required,
Various attempts have been made.

Specifically, when approaching a point such as an intersection requiring a determination of the direction of travel, an arrow indicating the direction of travel is superimposed and displayed at a corresponding point in the map information displayed on the display device. However, the place where the arrow is displayed is
It has been difficult to determine with certainty which point in the front scenery the driver is actually looking at.

That is, at a point such as an intersection where the traveling direction must be determined, the driver may not be able to see the traversable road due to the overpass or the building being hidden behind the building. In some cases, it is difficult for the driver to intuitively determine the traveling direction due to a visual difference from the road shape.

[0007]

According to the present invention, there is provided a navigation apparatus for a vehicle for measuring a current position, reading map information from a storage device based on a result of the measurement, and performing route guidance. In addition, the shape of a traversable road that is invisible to the user is displayed in a transparent display by three-dimensional display.

A navigation device for a vehicle that measures a current position, reads map information from a storage device based on the measurement result, and performs route guidance, wherein the route guidance is located ahead of a user's field of view in the vehicle compartment. A display device, and a system controller for causing the route guidance display device to display a traversable road shape that is invisible to the user when the vehicle approaches a point requiring the determination of the traveling direction in a transparent display by three-dimensional display. .

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is a vehicle navigation device that measures a current position, reads map information from a storage device 7 based on the measurement result, and performs route guidance. A display device 13 for displaying route guidance is located in front of a driver 15 in the room of the vehicle 14. The system controller 11 controls the display device 13 to display a traversable road shape which is originally blind by a building or the like and cannot be visually recognized by the driver 15 in a transparent display by three-dimensional display.

As a result, the driver 15 can confirm the invisible traffic road on the display device 13 and can quickly and accurately perform vehicle control at a point such as an intersection where a route determination is required.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the accompanying drawings.

In the embodiment shown in FIGS. 1 to 4, an azimuth sensor 1a is provided for detecting the traveling azimuth of the vehicle and the angular velocity sensor 1 according to the geomagnetism.
b denotes an angular velocity, and the distance sensor 1c detects a traveling distance. These sensors 1a to 1c constitute a traveling state detecting sensor group 1, and the GPS 2 detects a current position of the own vehicle from latitude and longitude information. The detection signal from the traveling state detection sensor group 1 and the position signal from the GPS 2 are A
It is supplied to a CPU 4 that calculates the amount of movement or the like based on data from the interface 3 that performs / D conversion, etc., and executes calculations for performing various image data processing.

The CPU 4 has a RAM for writing and reading information necessary for executing a program.
5, a ROM 6 in which various processing programs of the CPU 4 and necessary information are stored in advance, a storage device 7 including a storage medium such as a CD-ROM or an IC card in which digitized map information is stored, and a key operation by a user For example, an input device 8 including an input operation member such as a keyboard for sending various instructions such as a setting of a route to the CPU 4, and graphic data such as map information is converted into a VR by an instruction from the CPU 4.
A graphic controller 10 that draws screen information that can be immediately displayed, such as AM, into a buffer memory 9 that temporarily stores and holds the frame information as a frame buffer and outputs the image information as image data.
The configuration in which the display device 12 for displaying map information, such as an LCD, performs a predetermined display in accordance with image information from the graphic controller 10 is the same as that of a conventional vehicle navigation device. An audio output device (not shown) for generating an alarm sound or an electronically generated sound for calling attention as necessary is provided.

Reference numeral 13 denotes a route guidance display device, such as an LCD, which is newly provided separately from the display device 12 for displaying map information, which is normally installed in the conventional example. User (eg, driver) 1
5 is installed on the dashboard 17 near the windshield 16 so as to be located in front of the field of view of the driver 5, ie, the driver 15
Can view the scenery 18 ahead in the field of view through the windshield 16, and at the same time, can visually recognize the display device 13 for route guidance display in the field of view.

When approaching a point such as an intersection requiring a determination of the traveling direction, a graphic controller 1 which draws predetermined graphic data in a buffer memory 9 and outputs it as image information according to a command from the CPU 4.
Display to be described later is performed according to the image information from 0.

Next, the display of the route guidance display device 13 will be described with reference to FIG.

When the CPU 4 determines that the vehicle has approached a point, such as an intersection, for which a traveling direction is to be determined, the graphic controller 10 receives a command from the CPU 4 and executes a three-dimensional graphic using a perspective that is close to the road shape at that point. The data is drawn in the buffer memory 9 and output as image information.

At this time, the system controller 11 controls the transmissive display of the building or the road so that the display device 13 displays the shape of the traversable road which is originally obstructed by the building or the like and cannot be visually recognized by the stereoscopic display. That is,
The shape of a blind road that is blind in the three-dimensional skeleton display or the wire frame display is displayed on the display device 13 in a transparent display as shown by a broken line in FIG. Actually, even on the same road, the display color is displayed at a place visible to the driver 15 and at a place hidden by the driver 15, for example.

With this arrangement, when approaching a point that requires the determination of the traveling direction, the shape of a traversable road that cannot be visually recognized can be notified to the driver 15 by the display device 13, and the route guidance can be performed satisfactorily.

The display device 13 may be provided independently as in the embodiment, or may be a part of a so-called multi-window in which a screen is divided into a plurality of portions and displayed in an integrated display device. May be used.

In order to make the surrounding environment easy to understand,
The viewpoint position in the display may be higher than the position of the eyes of the driver 15 and / or may be rolled to the left and right at a constant cycle (displayed while the display image 19 is moved laterally to the left and right at a constant cycle). It is valid.

[0022]

According to the present invention, a user can check a traversable road which is not directly visible on the display device, and can quickly and accurately perform vehicle control at a point such as an intersection where a route judgment is required. it can.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a circuit configuration according to an embodiment of the present invention.

FIG. 2 is an explanatory view of a main part of a vehicle including the embodiment.

FIG. 3 is an explanatory diagram illustrating a display example of the embodiment.

FIG. 4 is an enlarged view of a main part of FIG. 3;

[Explanation of symbols]

 7 storage device 11 system controller 12 display device for displaying map information 13 display device for displaying route guidance 14 vehicle 15 driver (user) 19 image

Claims (2)

[Claims] 1. A vehicular navigation device that measures a current position, reads map information from a storage device based on the measurement result, and performs route guidance, and displays a traversable road shape invisible to a user by three-dimensional display. A vehicular navigation device characterized in that the information is displayed in a transparent display. 2. A navigation device for a vehicle, which measures a current position, reads map information from a storage device based on the measurement result, and performs route guidance, wherein the route guidance is located in front of a visual field of a user in a vehicle room. A display device, and a system controller for displaying, on the route guidance display device, a three-dimensional display of a traversable road shape that is invisible to the user when approaching a point requiring a traveling direction determination. Vehicle navigation device.