JP2000346650A - Navigation apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To guide a vehicle on a guide route by a simple figure display to be easy for a user to understand in a navigation apparatus which guides to a destination by an arrow display without displaying maps. SOLUTION: A navigation apparatus 1 calculates a direction in which a guide route proximal to a vehicle position is present, a distance from the vehicle position to the guide route and a direction on the guide route in which the vehicle is to advance from the vehicle position measured by a position measurement part incorporated in the apparatus and guide route information stored in a guide route memory. Then, the navigation apparatus 1 selects a guide display pattern close to an actual positional relationship from a plurality of guide display patterns stored in a guide display pattern memory 3 on the basis of the calculated direction in which the guide route is present, the distance to the guide route and the direction on the guide route in which the vehicle is to advance, and displays the pattern to a display device 2. The navigation apparatus not displaying maps can guide the vehicle to the guide route in a manner easy for a user to understand.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device, and more particularly, to a navigation device that displays a route to a destination by displaying an arrow without displaying a map.

[0002]

2. Description of the Related Art In a navigation device, a map around a vehicle is displayed together with a vehicle mark on a display screen, and a guidance route to a destination is displayed in a different color from other roads to be thicker to display the route to the destination. There are those that provide route guidance, and those that do not display a map on the display screen and provide route guidance only by arrow display according to a guidance route to a destination.

[0003] A navigation device of the type that displays a map displays a map around the vehicle together with a vehicle mark indicating the position of the vehicle, so that map information around the vehicle can always be obtained. There is a feature that can be understood by On the other hand, a navigation device of a type that provides a route to a destination only by displaying an arrow without displaying a map,
Since the map is not displayed, the display screen can be made smaller.
There is no extra display on the display screen, and the display can be understood at a glance even if the display is viewed while the vehicle is running.

[0004]

By the way, in a navigation device that guides a route to a destination only by displaying an arrow without displaying a map, it is good if the vehicle position is on a guidance route, but the vehicle position is not guided. If not on the route, the vehicle must be guided to the guidance route. for that reason,
An arrow indicating the direction of the guidance route from the vehicle position is displayed.

However, it is difficult to know the distance from the vehicle to the guidance route and the direction in which the vehicle should proceed along the guidance route only by displaying the arrow indicating the direction of the guidance route from the vehicle position. There is a problem in that, after passing through the guidance route, or after arriving at the road that is the guidance route, it is not possible to know in which direction to proceed along the road.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a navigation device that does not display a map and displays guidance for getting on a guidance route when the vehicle is located away from the guidance route.

[0007]

SUMMARY OF THE INVENTION According to the present invention, there is provided a navigation apparatus for guiding a route to a destination by an arrow without displaying a map. A destination input means for inputting a destination, a guidance route search means for searching for a guidance route to the destination input by the destination input means, and a guidance route searched by the guidance route search means. Guidance route storage means, current position measurement means for measuring a current position, guidance display pattern storage means for storing a plurality of types of guidance display patterns, and a direction in which the guidance route is located from the current position, from the current position. A method for selecting and displaying one guidance display pattern from the guidance display pattern storage means based on the distance to the guidance route and the direction to proceed in the guidance route. It is achieved by the navigation device comprising a and.

According to the present invention, the guide display pattern stored in the guide display pattern storage means includes a line indicating a guidance route, a symbol indicating a vehicle position and a direction,
This is achieved by a navigation device that is represented by a combination of arrows that indicate the direction in which the vehicle should proceed in the guidance route.

[0009] In other words, with the above-described configuration, when the vehicle is located away from the guidance route, the navigation device that does not display the map can easily guide the driver to the guidance route.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (A) Schematic Description FIG. 1 is a schematic explanatory diagram of a navigation device according to the present invention.
FIG. 1A is a diagram showing a relationship between a guidance route and a vehicle position.
(B) is a figure which shows the structure of a navigation apparatus, and the example of guidance display.

In FIG. 1A, RD is a road, RRD
Indicates a guidance route, and indicates a vehicle position. In FIG. 1B, 1 is a navigation device, 2 is a display device, and 3 is a guidance display pattern memory for storing a plurality of guidance display patterns.

The guidance display pattern memory 3 stores a plurality of guidance display patterns, and these guidance display patterns simply display the positional relationship between the position of the vehicle and the guidance route, the direction in which the guidance route should proceed, and the like. It is represented by

The navigation device 1 calculates the distance from the vehicle position to the guidance route and the direction from the vehicle position to the guidance route from the current vehicle position and the guidance route measured by the built-in position measurement device. Then, based on the calculated distance and direction from the vehicle position to the guidance route and the direction in which the vehicle should proceed on the guidance route, the closest one of the plurality of guidance display patterns stored in the guidance display pattern memory 3 is determined. Select and display on the display device 2.

For example, when the vehicle position is at the position shown in FIG. 1A, the navigation device 1 reads the corresponding display pattern (of FIG. 1B) from the guidance display pattern memory 3.
Is displayed on the display device 2, and when the vehicle position is at the position shown in FIG.
Selects a corresponding display pattern (of FIG. 1B) from the guidance display pattern memory 3 and displays it on the display device 2.

With the above arrangement, in a navigation device that does not display a map, when the vehicle is away from the guidance route, the direction of the guidance route from the vehicle position, the distance from the vehicle position to the guidance route, and the guidance route should be advanced. The direction can be displayed so that the driver can easily understand it.

(B) Configuration of Navigation Apparatus FIG. 2 is a diagram showing the configuration of the navigation apparatus of the present invention. 1 is a navigation device, 2 is a display device,
Reference numeral 3 denotes a guidance display pattern memory, which is similar to that described with reference to FIG. The navigation device 1 is a navigation device that does not display a map on the display device 2 but guides a route to a destination by displaying an arrow.

A map information storage medium 11 stores road map information, for example, a CD-ROM, and 12 is a CD-ROM.
CD-ROM for controlling the reading of road map information from
A control unit 13 is a position measuring unit that measures the current position of the vehicle, a vehicle speed sensor that detects the moving distance of the vehicle, a gyro that detects the moving direction of the vehicle, a GPS receiver, and a position calculation CP.
U and the like. 14 is a map information memory that stores road map information read from the CD-ROM, 15 is a guidance route memory that stores a guidance route to a set destination, 16 is a control unit that controls the entire navigation device, and 17 is a control unit. An operation unit 18 performs a destination setting operation, a menu selection operation, and the like. A display controller 18 controls the display device 2 according to an instruction from the control unit 16.
9 is a bus.

The guidance display pattern memory 3 stores a plurality of guidance display patterns, and these guidance display patterns are represented by a simple graphic display showing the positional relationship between the vehicle position and the guidance route and the direction in which the guidance route should proceed. ing. FIG. 3 is an explanatory diagram of the guidance display pattern. In the figure, DSP indicates a display screen, CM indicates a vehicle mark, RRD indicates a simplified guidance route display, and ARW indicates a direction in which the guidance route should travel. The upper side of the display screen DSP corresponds to the direction in which the vehicle is facing (vehicle traveling direction).
M is represented by an isosceles triangle, and the direction of the angle between the isosceles triangles indicates the traveling direction of the vehicle. In addition, even if the direction of the guidance route from the vehicle position is the same, a guidance display pattern according to the distance from the vehicle to the guidance route is prepared,
For example, the guide display pattern shown in FIG.
The guide display pattern shown in (b) is a display example in the case where the distance from the vehicle to the guidance route is different even if the direction in which the guidance route is located from the vehicle is the same, and FIG.
(A) The distance from the vehicle position to the guide route is shorter.

FIG. 4 is an explanatory diagram of the types of guidance display patterns stored in the guidance display pattern memory 3. The positional relationship between the vehicle and the guidance route, the direction in which the guidance route should travel, the direction of the vehicle, and the like are represented by a pattern combining simple figures. Depending on the positional relationship between the vehicle position and the guidance route, the display distance from the vehicle to the guidance route in each of the eight directions of the vehicle front, rear, right, left, diagonally right front, diagonally left front, diagonally right rear, diagonally left rear, 32 types of guidance display patterns having different directions in which the guidance route should travel are stored.

For example, let us consider a case where the position of the vehicle is in a direction perpendicular to the guidance route as shown in FIG. When the vehicle position is at the position shown in FIG. 1A, that is, when the vehicle position is far away from the guidance route, the map is selected from a plurality of guidance display patterns stored in the guidance display pattern memory 3. The guidance display pattern shown in FIG. 1 (b) is selected and displayed. In addition, when the vehicle position is at the position shown in FIG. 1A, that is, when the vehicle position is near the guidance route, from among the plurality of guidance display patterns stored in the guidance display pattern 3, The guide display pattern shown in FIG. 1B is selected and displayed.

As described above, a plurality of guidance display patterns are provided for expressing the positional relationship between the vehicle and the guidance route and the direction in which the guidance route should proceed in a simple graphic display for each direction in which the guidance route exists with respect to the vehicle position. In advance, the positional relationship between the actual vehicle and the guidance route is detected, and the angle of the guidance route with respect to the vehicle position,
One of a plurality of guidance display patterns stored in the guidance display pattern memory 3 is selected based on the distance from the vehicle to the guidance route and the direction in which the guidance route should travel, and is displayed on the display device 2.

(C) Operation Flow FIG. 5 is a diagram showing an operation flow of the navigation device of the present invention. Here, an operation from a user setting a destination and searching for a guidance route until the vehicle gets on the guidance route will be described.

First, the user operates the operation unit 17 to select a destination from a city name, a street name, a building name, and the like, and performs a destination setting operation (step S101). When the destination is set, the control unit 16 controls the CD-ROM control unit 12 to read road map information including the current position of the vehicle and the destination from the CD-ROM 11 into the map information memory 14, and stores the road map information in A guidance route from a point on a nearby road to a destination is searched and stored in the guidance route memory 15 (step S).
102).

Next, the control unit 16 stores the current vehicle position in the guidance route memory 15 based on the vehicle position measured by the position measurement unit 13 and the guidance route information stored in the guidance route memory 15. It is determined whether or not the vehicle is on the guidance route (step S103). If the current vehicle position is apart from the guidance route, the control unit 16 calculates the direction and distance of the guidance route from the current vehicle position (step S104).

When the direction and distance of the guidance route are calculated from the current position of the vehicle, the control unit 16
, The actual vehicle position and the guidance based on the direction and distance of the guidance route from the vehicle position calculated in step S104 and the direction in which the guidance route should proceed from among a plurality of types of guidance display patterns. A guidance display pattern close to the positional relationship with the route is selected (step S105).

Then, the control section 16 sends the guidance display pattern selected in step S105 to the display controller 18, and the display controller 18 displays the input guidance display pattern on the display device 2 (step S106).

After the guidance display pattern is displayed, the flow returns to step S103, and it is determined whether or not the vehicle position has been on the guidance route due to the movement of the vehicle. S1
06 is continued.

In step S103, if the vehicle is on the guidance route, the guidance route stored in the guidance route memory 15 and the current vehicle position measured by the position measurement unit 13 are stored in the same manner as in the conventional navigation device that does not display a map. On the basis of,
The user is guided to the destination by displaying an arrow indicating the direction in which the vehicle should travel, or an arrow indicating the course when the vehicle approaches an intersection or the like where the course should be changed within a predetermined distance (step S107). ).

In this way, as shown in FIG. 1B, the positional relationship between the vehicle position and the guide route and the direction in which the guide route should proceed can be displayed in a simple graphic display.

With the above arrangement, the navigation device that guides the user to the destination without displaying the map is provided.
Guidance from a position distant from the guidance route to arrival at the guidance route can be displayed in a simple graphic display so as to be easily understood by the driver.

In the above description, the types of the guide display patterns stored in the guide display pattern memory 3 are described as 32 types, but other types may be used.

The present invention has been described with reference to the embodiments.
The present invention can be variously modified in accordance with the gist of the present invention described in the claims, and the present invention does not exclude these.

[0033]

As described above, according to the present invention, in a navigation device that does not display a map, when the current position of the vehicle is not on the guidance route, the direction from the vehicle position to the guidance route and the direction from the vehicle position to the guidance route are different. Since the distance and the direction in which the vehicle should proceed after riding the guidance route are displayed, the driver can easily advance the vehicle to the guidance route. Also, according to the present invention, a plurality of guidance display patterns are stored, and a guidance display pattern corresponding to the positional relationship between the vehicle and the guidance route is selected from the plurality of stored guidance display patterns and displayed. Therefore, even if the navigation device has a small screen, the vehicle can be reliably guided to the guidance route.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory diagram of the present invention.

FIG. 2 is a configuration diagram of a navigation device of the present invention.

FIG. 3 is an explanatory diagram of a guidance display pattern.

FIG. 4 is an explanatory diagram of types of guidance display patterns stored in a guidance display pattern memory.

FIG. 5 is a diagram showing an operation flow of the navigation device of the present invention.

[Explanation of symbols]

 1. Navigation device 2. Display device 3. Guidance display pattern memory

Claims (2)

[Claims] 1. A navigation device that guides a route to a destination by an arrow without displaying a map, a road map information storage unit that stores road map information, a destination input unit that inputs a destination, Guidance route searching means for searching for a guidance route to a destination input by the destination input means; guidance route storage means for storing a guidance route searched by the guidance route searching means; Position measurement means; guidance display pattern storage means for storing a plurality of types of guidance display patterns; direction in which the guidance route is located from the current position; distance from the current position to the guidance route; Means for selecting and displaying one guidance display pattern from the guidance display pattern storage means based on the direction. ® down apparatus. 2. The guidance display pattern stored in the guidance display pattern storage means may be represented by a combination of a line indicating a guidance route, a symbol indicating a vehicle position and a direction, and an arrow indicating a direction to travel in the guidance route. The navigation device according to claim 1, wherein: