JPH09264752A - Route guide display method and apparatus for car navigation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable handily reading of an advancing state of an automobile to a destination during the operation thereof by displaying only the arrow for guidance in the ongoing direction and the number of residual intersections ahead in the direction of running being enlarged on a screen as a whole. SOLUTION: When setting the destination on a navigation apparatus, the arrow for guidance in the ongoing direction and the number of residual roads ahead in the direction of running are displayed on a monitor screen so that an automobile can reach the destination. A route guidance display device for a car navigation converts an output data of a navigation circuit 10 to a display signal and a voice signal with a converter 207 and then, shows the display signal on a display 40 through a driver 30 while the voice signal is outputted to a speaker 80 through a digital/analog converter 50. For example, four arrows 41-44 and a display element 45 alone are displayed on the screen and a direct display arrow 41 is turned on when a straight traveling is continued in guidance. A voice message of 'travel straight' is outputted from the speaker 80 before the automobile reaches an intersection.

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 an automobile so that a user can easily read the information while driving to reach a destination by indicating the direction guidance arrow and the number of remaining intersections in the traveling direction on the screen. The present invention relates to a route guidance display method and device for automobile navigation.

[0002]

2. Description of the Related Art A conventional automobile navigation system is
When the location of your car is shown on the map or the destination is set with the help of satellites, the driver can easily find the destination by outputting the signal of the optimum route data to the destination and the direction data. Make it searchable.

However, the state displayed on the monitor of the conventional navigation device shows the position of the automobile in operation by the arrow on the map screen showing the road and main buildings. Therefore, it is difficult to accurately read the arrow and map screen shown on the monitor screen of limited size while driving, so it is inconvenient to stop the car and read it, or have the passengers read it. is there.

[0004]

SUMMARY OF THE INVENTION The present invention has been devised to solve the above-mentioned conventional problems, and the number of arrows for guiding the traveling direction and the number of remaining intersections traveling in the traveling direction are provided on the entire screen. To make it easy to read the progress to the destination while driving, and to show the map screen only when necessary, while outputting the destination guidance voice signal without the need to look at the screen. The purpose is to get on the ground.

[0005]

In order to achieve the above-mentioned object, a route guidance display method for a car navigation according to the present invention is an arrow for guiding a traveling direction and a traveling direction in a monitor screen when a destination of a navigation device is set. The number of remaining intersections is indicated so that the car can reach the destination, and the car navigation route guidance display device converts the output data of the navigation circuit into a display signal and a voice signal with a converter, and then the display signal is displayed. The audio signal is displayed on the display through the driver and output to the speaker through the digital-analog converter.

[0006]

Embodiments of the present invention will be described below in more detail with reference to the accompanying drawings. The route guidance display method for car navigation of the present invention is a route guidance display method for a car navigation device, which guides straight, U-turn, left turn and right turn on a monitor screen when setting a destination. An arrow is shown and a display element indicating the number of remaining intersections advancing in the traveling direction is shown in the center of the screen, and then the destination route is guided by lighting the arrow and displaying the number on the display element.

At this time, the map screen shown in the prior art is selected by pushing the button when the driver needs it. That is,
When selecting a destination, the four up, down, left, and right arrows and the display element that shows a number in the center of the arrow are shown large on the monitor screen so that you can see at a glance while driving, and to reach the destination. While guiding the change of the vehicle traveling direction by turning on the arrow, the number of display elements is changed to indicate at which intersection the traveling direction is changed as indicated by the arrow.

Therefore, the driver desires to recognize the number shown in the display signal and the illuminated arrow and proceed through the intersections of the indicated number to change the traveling direction to the direction of the illuminated arrow. Get to your destination. At this time, since only the arrow and the display element are shown large on the screen, the driver can easily and quickly recognize the contents of the screen while driving. Further, the desired destination can be searched for only by the recognized contents.

On the other hand, as shown in FIG. 1, the route guidance display device for automobile navigation of the present invention includes a converter 20 for interpreting the output data of the navigation circuit 10 and converting it into a display signal and a voice signal. A display driver 30 for driving the display signal converted by the converter 20 to show it on a display 40 such as a monitor, and an audio signal 60 and an amplifier 70 together with an audio signal 60 by converting the audio signal converted by the converter 20 into an analog signal. And a digital-analog converter 50 for applying the voltage.

Here, when the navigation circuit 10 is assisted by a satellite or the like to indicate the current position of one's own car on a map and operates according to the destination setting of the driver, the navigation circuit 10 indicates the direction in which the driver should operate. Data and optimum route data or voice guidance data are output. The converter 20 receives the output data of the navigation circuit 10, interprets the type and content of the data, and then converts the data into an audio signal or a display signal.

The display driver 30 drives the display signal applied to the converter 20 so as to be displayed on the display 40, and the display 40 is a device for displaying the signal applied by the display driver 30 to the outside. A monitor or the like is used. Digital-to-analog converter
50 converts the audio signal applied from the converter 20 into an analog signal, and the analog audio signal is an A / A signal of a car radio or the like.
Audio signal applied by V (Audio / Video) system 60
Is synthesized with

The amplifier 70 amplifies the audio signal, and the speaker 80 converts the audio signal amplified by the amplifier 70 into an audible signal. The present invention will be described according to the actual display state of the display 40. When setting the destination, the route guidance display screen is displayed as shown in Fig. 2, and the straight-line display arrow 4
1. The U-turn display arrow 44, the left turn display arrow 43, and the right turn display arrow 42 are arranged on the upper, lower, left, and right sides of the screen, and the remaining number of display elements 45 of the intersection is arranged in the center of the screen.

That is, according to the present invention, only four arrows 41-44 and the display element 45 are shown on the screen, so that the position of the car on the map screen can be recognized more easily and quickly than the conventional method. . Here, the straight-ahead display arrow 41 is lit when continuously guiding straight ahead, the right-turn display arrow 42 is lit when a right turn is requested, the left-turn display arrow 43 is lit when a left-turn is requested, and the U-turn display arrow 44 is a U-turn. Lights when needed.

The display element 45 for the number of remaining intersections is composed of 7 segments (LED), and the number of the remaining intersections is indicated by a numeral. Hereinafter, a specific display example will be described with reference to FIGS. 3 to 7. The fact that only the straight-ahead arrow 41 is illuminated as shown in FIG. 3 requires that the vehicle continue straight ahead, and the speaker 80 outputs the voice guidance "Go straight" before reaching the intersection.

Therefore, the driver continues straight ahead when only the straight ahead indicating arrow 41 is illuminated as shown in FIG. However, when a left turn is required at the second intersection, the left turn display arrow 43 is illuminated as shown in FIG. Turn left at the 3rd intersection ". Then, the driver turns left at the second intersection when the screen shown in FIG. 4 is displayed.

Next, when a right turn is required at the third intersection, the right turn display arrow 42 is turned on as shown in FIG. 5, and the remaining intersection number display element 45 is indicated by numeral 3. Meanwhile, the voice guidance "turn right at the third intersection" is output. Therefore, when the driver sees the screen as shown in FIG. 5 or listens to the voice guidance signal while driving, he / she goes straight and turns right at the third intersection.

If a U-turn is required in front of the second crossing, the U-turn display arrow as shown in FIG.
44 is turned on, and the voice guidance "Please make a U-turn in front of the second intersection" is output while indicating the remaining intersection display element 45 with numeral 2. Then, the driver goes straight and makes a U-turn in front of the second intersection. When you reach your destination,
While all four arrows 41-44 are turned on as shown in FIG. 3, the remaining intersection number display element 45 is indicated by numeral 0 so that the driver can clearly recognize that he or she has arrived at the destination.

When the map screen is displayed during the display, the driver can operate the buttons to see the map screen in the existing shape. As described above, in the screen display of the navigation device, the present invention is shown by using four arrows and one display element on the screen, and it is possible to go to a desired destination without showing the map screen on the screen. .

In the present invention, the arrows are shown by using the four arrows of up, down, left and right, but they may be changed to three or eight depending on the shape of the intersection. The display element can be directly indicated by using LCD or FLT instead of 7 segment (LED), and the voice guidance of the present invention allows the driver to select the presence or absence of voice guidance as a selection specification.

[0020]

According to the present invention, an arrow for displaying the direction of travel and the number of remaining intersections are shown instead of the map screen so that the user can reach a desired destination without looking at the map, so that the driver can see at a glance while driving. It guarantees convenient and safe operation.

[Brief description of drawings]

FIG. 1 is a circuit diagram of a route guidance display device according to the present invention.

FIG. 2 is a state diagram of a route guidance display screen according to the present invention.

FIG. 3 is a display diagram when the vehicle continues straight ahead.

FIG. 4 is a display diagram of a left turn at a second intersection.

FIG. 5 is a display diagram of a right turn at a third intersection.

FIG. 6 is a diagram showing a U-turn in front of the second intersection.

FIG. 7 is a destination arrival display diagram.

[Explanation of symbols]

 10 navigation circuit 20 converter 30 display driver 40 display 50 D / A converter 60 audio device 70 amplifier 80 speaker

Claims (4)

[Claims] 1. A screen display method for a car navigation system, wherein when a destination is determined, an arrow for displaying a direction of travel and a display element indicating the number of remaining intersections are displayed on the screen, and then, according to a progress state of the car. Arrow to light up to guide the direction of travel,
A route guidance display method for a car navigation system in which the number of remaining intersections traveling in the traveling direction is indicated by a number to guide a turn. 2. An arrow display element for displaying the traveling direction is arranged on the upper, lower, left and right sides of the screen, and a display element indicating the number of remaining intersections is arranged at the center of the screen. Item 1. A route guidance display method for car navigation according to Item 1. 3. A navigation circuit for outputting data indicating a position and a traveling direction of an automobile, a converter for interpreting the data of the navigation circuit and converting the data into a display signal and a sound signal, and a display signal of the converter. A route guidance display device for a car navigation system, comprising: a display driver which is driven to be shown on a display; and a digital-analog converter which converts an audio signal of the converter into an analog signal and applies the analog signal to a speaker. 4. The display signal converted by the converter is a signal displaying arrows for guiding a traveling direction on the upper, lower, left and right sides of the screen, and a number indicating the number of remaining intersections in the center of the screen. The route guidance display device for vehicle navigation according to claim 3, wherein