JPH01207623A - Course guiding device for vehicle - Google Patents

Abstract

PURPOSE:To specify a specific point such as a starting point and a destination through easy operation by computing the current position of the vehicle according to pieces of information from an azimuth sensor and a vehicle speed sensor. CONSTITUTION:A current position detecting means 4 reads starting point data out of a starting point data memory 1 and computes the current position of the vehicle from the pieces of information from the azimuth sensor 2 and vehicle speed sensor 3. Then a bar code reader reads a bar code 23 displayed at the destination point out of a map and stores it in a target point azimuth and position storage means 15 as xy coordinates on the map. A destination point azimuth arithmetic means 16 and a destination distance arithmetic means 17 computes the azimuth of the destination viewed from the current position and the distance from the current position to the destination point according to the pieces of information from the means 14 and 15. A destination distance drawing means 18 and a destination azimuth drawing means 20 write the dis tance information obtained from the means 17 and the azimuth information obtained from the means 16 in an RAM 9 and a display control part 10 displays the map stored in the RAM 9 and the current display mark of the vehicle on a device 12.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a route guidance device for a vehicle that is mounted on a vehicle and provides route guidance to a driver.

C. Prior Art] This type of vehicle route guidance device is disclosed in, for example, Japanese Patent Application Laid-Open No. 1986-
It is described in Publication No. 51000, etc.

[Problems to be Solved by the Invention] Conventionally, in this type of device, a map or the like is displayed on a display screen such as a CRT, and a specific point such as a departure point or a destination is specified from the map.

In this case, it was not possible to specify the departure point, destination, etc. with a single operation. That is, first, a wide area map is displayed on the display screen, and a specific area is selected. Then, the map of that specific area is displayed on the display screen again, and an even smaller area is selected from the map. By repeating this operation many times, a specific point such as a departure point or destination can be specified for the first time.

For example, on the 11th operation, a map of the entire country of Japan is displayed on the display screen. In the second operation, the Kinki region is selected from the national map, and a map of the Kinki region is displayed on the display screen.

In the third operation, Osaka Prefecture is selected from the map of the Kinki region, and the map of Osaka Prefecture is displayed on the display screen. In the fourth operation, Osaka cloth is selected and a map of this Osaka cloth is displayed on the display screen.

In the fifth operation, Kita Ward is selected and a map of that Kita Ward is displayed on the display screen. In the sixth operation, the area around Umeda is selected from the map of Kita Ward, and the map of the area around Umeda is displayed on the display screen. Then, specific points such as the departure point and destination are identified from this map around Umeda.

As described above, in the conventional vehicle route guidance device, in order to specify a specific point such as a departure point or a destination, the map displayed on the display screen had to be updated many times.

Such operations are troublesome and time consuming. Such operations are troublesome, especially for people who are not accustomed to operating machines.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a route guidance device for a vehicle that can specify a specific point such as a departure point or a destination with a simple operation.

[Means for Solving the Problems] A route guidance device for a vehicle, which is a premise of the present invention, includes a distance detecting means for detecting the travel distance of a vehicle, a direction detecting means for detecting a traveling direction of the vehicle, and the distance detecting means. and a current position detection means that calculates the current position of the vehicle based on information from the direction detection means, a map data storage means that stores map data, and information from the current position detection means and the map data storage means. display control means for displaying the map and the current position of the vehicle on the display screen based on the map and the current position of the vehicle.

In such a device, the present invention further includes an atlas that displays specific points or names with barcodes;
specific point storage means for reading the barcode and storing the specific point or name as xy coordinates on a map;
It is characterized by comprising a specific point input means for inputting specific point information obtained from the specific point storage means into the current position detection means or the display control means.

[Operation] In this invention, an atlas is prepared separately from the main body of the device. In this atlas, specific points and names are displayed as barcodes. By reading the barcode displayed at a specific point, such as a departure point or destination, that specific point or name is stored as xy coordinates on a map. The stored specific point information is input to the current position detection means or display control means.

Therefore, in the present invention, a specific point such as a departure point or a destination can be specified simply by reading the barcode displayed on the atlas. Such operations are very simple, and even those who are not familiar with machines can easily operate them.

[Embodiment] FIG. 1 is a schematic block diagram showing an embodiment of the present invention. FIG. 2 is a flowchart showing the process of displaying the current position of the vehicle. Using these figures 1 and 2,
First, the configuration and operation for displaying the current position of the vehicle will be explained.

The vehicle route guidance device includes a departure point data memory 1, a direction sensor 2, a vehicle speed sensor 3, a current position detection means 4, a map database 5, a map drawing means 6, a scale information storage means 8, and a current position detection means 4. Position mark drawing means 11 and RAM
9, a display control section 10, and a display screen 12. The map database 5 stores each point on the map as xy coordinates. The starting point data memory 1 stores starting points as xy coordinates. The direction sensor 2 detects the current direction of travel of the vehicle. The vehicle speed sensor 3 is
For example, the distance traveled by the vehicle is detected by detecting the number of rotations of the wheels.

The current position detection means 4 reads departure point data from the departure point data memory 1 (step 1001), and integrates information from the direction sensor 2 and information from the vehicle speed sensor 3 based on this departure point. The current position of the vehicle is calculated as xy coordinates (steps 1002 to 1).
004).

The map scale information storage means 8 stores the scale of the map to be displayed based on the command input to the map scale determination means 7. The map drawing means 6 reads the scale information from the map scale information storage means 8 and also reads map data from the map database 5 (steps 1005 to 1006).
The map to be displayed and the current position of the vehicle are stored in the RAM 9 (step 1007). Current position mark drawing means 1
1 is a RAM 9 based on information from the map drawing means 6.
to store the current position mark. The display control unit 10
The map and the current position display mark of the vehicle stored in the AM 9 are displayed on the display screen 12 such as a CRT (step 1008).

The above is the configuration and operation for displaying the current position of the vehicle, but these are not the essential part of the present invention. The essential part of this invention resides in a configuration that makes it possible to easily specify points such as a starting point and a destination.

The embodiment shown in FIG. 1 is a device that allows a destination to be specified with a simple operation. In order to realize this, the vehicle route guidance device further includes a destination barcode 23, a barcode reading means 14, a destination position/position storage means 15, and a destination position calculation means 1.
6, a destination distance calculation means 17, a destination distance drawing means 18, a destination mark drawing means 19, and a destination position drawing means 20.

In conventional devices, the destination is specified on a map displayed on a display screen such as a CRT. However, in this invention, the destination is picked up from an atlas prepared separately from the main body of the device. FIG. 4 is a perspective view showing such an atlas 21, and FIG. 5 is a diagram showing a part of the maps listed in the atlas 21. On the map of the atlas 21, a barcode 23 is displayed at each specific point or name.

The barcodes 23 are formed with different display modes, and each barcode is used to represent a specific point or name.

FIG. 3 is a flowchart showing the processing up to displaying the destination on the display screen 12. Figure 1, Figure 3, Figure 4
The operation of destination display processing will be explained using the diagram and FIG. 5.

First, a desired map is selected from the atlas 21.

Then, from the map, read the barcode 23 displayed at the point that should be the destination using the barcode reader 22 (
The barcode reading means 14) reads the destination information, and the destination location/position storage means 15 stores the read destination information as xy coordinates on the map (step 1101). The destination position calculation means 16 includes the destination position/position storage means 1
At the same time, the destination data is read from the current position detecting means 4, and the direction of the destination from the current position is calculated based on this information (steps 1102 to 1104). Destination distance calculation means 17 reads destination data from destination location/position storage means 15 and current position data from current position detection means 4, and calculates the distance from the current position to the destination based on the information. (Step 1105).

The destination distance drawing means 18 writes the distance information obtained from the destination distance calculating means 17 onto the RAMQ (step 1107). FIG. 6 is a diagram showing a map displayed on the display screen 12. A distance display mark 27 named rlOKmJ is displayed on the display screen 12. This number is
It shows the distance from the vehicle's current location to its destination.

The destination position drawing means 20 writes the direction information obtained from the destination position calculating means 16 onto the RAMQ (step 110).
6). On the map shown in FIG. 6, a direction display mark 26 indicating the direction of the apparent location from the current position of the vehicle is displayed. In this embodiment, the direction is indicated by the direction of the arrow.

The destination mark drawing means 19 reads the map data from the map drawing means 6 and also stores the destination position/position storage means 15.
(step 1108), and if the destination is on the map displayed on the display screen 12 (step 1'109 affirmative), the destination display mark 25 is set to RA.
Write on M9 (step 1110). In FIG. 6, a destination display mark 25 and a current position display mark 24 are also displayed. Note that if the destination does not fit on the map (No in step 1109), the destination display mark 25 is not displayed on the screen 12.

As described above, in this embodiment, the destination can be specified simply by searching for the destination point from the atlas 21 and reading the barcode 23 displayed at the destination point using the barcode reading means. This operation is very simple and can be easily performed even by a person who is not familiar with machines.

Note that the term "atlas" used in this specification refers not only to the original atlas that shows the situation of roads and railways in drawings, but also to place names, names, historical sites, tourist spots, stations, airports, ports, buildings,
It must be understood that it also includes a list of names of facilities, etc. An example of such an atlas 21 is shown in FIG. This map lists the names of city halls, hotels, stations, etc., and each name has two barcodes.
3 is displayed.

In the above-described embodiment, the configuration and operation for specifying the destination point have been described, but the present invention can also be used when specifying the starting point. Such an embodiment is shown in FIG. Note that in FIG. 8, elements given the same numbers as those used in FIG. 1 indicate the same elements, so a detailed explanation thereof will be omitted.

In the embodiment shown in FIG. 8, a departure point barcode 28, a barcode reading means 29, and a departure point storage means 30 are provided as means to replace the departure point data memory 1 shown in FIG. There is.

These operations are as follows.

First, a suitable map is selected from the atlas 21, and the barcode 28 displayed at the starting point is read by the barcode reading means 29. The departure point storage means 30 stores the departure point data obtained from the barcode reading means 29 as xy coordinates. Then, the current position detection means 4 reads the departure point data from the departure point storage means 30 (step 1001 in FIG. 2), and based on this departure point, the information from the direction sensor 2 and the information from the vehicle speed sensor 3 are read. By integrating , the current position of the vehicle is calculated as xy coordinates (steps 1002 to 1004 in FIG. 2).

[Effects of the Invention] As described above, according to the present invention, specific points such as a departure point and a destination point can be input by reading a barcode displayed on an atlas, so the operation is easy. It's very easy and can be done in a short amount of time. Moreover, even a person who is not familiar with the machine can easily operate the machine.

[Brief explanation of the drawing]

FIG. 1 is a schematic block diagram showing one embodiment of the present invention. FIG. 2 is a diagram showing a flowchart for current position display processing. FIG. 3 is a diagram showing a flowchart for destination position display processing. FIG. 4 is a perspective view showing an atlas with barcodes displayed. Fifth
The figure shows a part of the map published in the atlas shown in FIG. 4. FIG. 6 is a diagram showing a map displayed on the display screen. FIG. 7 is a diagram showing another example of the atlas. FIG. 8 is a schematic block diagram showing a second embodiment of the invention. In the figure, 1 is a starting point data memory, 2 is a direction sensor, 3 is a vehicle speed sensor, 4 is a current position detection means, 5 is a map database, 6 is a map drawing means, 7 is a map scale determining means, and 8 is map scale information 9 is a RAM, 10 is a display control unit, 11 is a current position mark drawing unit, 12 is a display screen, 14 is a barcode reading unit, 15 is a destination position.
position storage means, 16 a destination position calculation means, 17 a destination distance calculation means, 18 a destination distance drawing means, 19 a destination mark drawing means, 20 a destination position drawing means, 21
is an atlas, 22 is a barcode reader, 23 is a barcode, 24 is a current position display mark, 25 is a destination display mark, 26 is a direction display mark, 27 is a distance display mark, 28
is the departure point parcode, 29 is the barcode reading means, 3
0 indicates the starting point storage means. Figure 2 Figure 3 Figure 5

Claims (1)

[Scope of Claims] Distance detection means for detecting the travel distance of the vehicle, direction detection means for detecting the traveling direction of the vehicle, and calculating the current position of the vehicle based on information from the distance detection means and the direction detection means. a map data storage means that stores map data; and a display that displays a map and the current position of the vehicle on a display screen based on information from the current position detection means and the map data storage means. A vehicle route guidance device comprising: a map book displaying a specific point or name as a barcode; and a device that reads the barcode and stores the specific point or name as xy coordinates on the map. A vehicle route comprising: a specific point storage means for storing specific point information; and a specific point input means for inputting specific point information obtained from the specific point storage means into the current position detection means or the display control means. Guidance device.