JP2000002547A - Navigator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display interruption information only for an optimum amount of time according to a driving state and information data to be displayed. SOLUTION: A navigator is provided with a GPS receiver 1a for receiving position information from a GPS that is a position measurement system utilizing an artificial satellite, an own position operation device for calculating an own position from information that is received by a GPS receiver 1a, a record medium-reading device 7 for reading map data from a storage medium that stores map information, an input device 10 for operating the system, and a display device 9 for displaying an own position on the map based on the map data being read by the record medium-reading device and the own position that is calculated by the own position operation device, thus displaying an information display screen on the above display device 9 as needed. At this time, time being displayed on the information display screen is automatically set according to a driving state and information data being displayed.

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 in which an information display screen pops up on a map screen.

[0002]

2. Description of the Related Art Conventionally, in a navigation device for displaying the position of a vehicle on a map screen, a beacon information interrupt pop-up screen or an interrupt message screen is displayed while covering the currently displayed map screen during driving. In some cases, the current map is moved to the edge of the screen, and an interrupt information screen is displayed on the main frame. In such a navigation device, the display time of the interrupt information screen is fixed,
It was common for the user to set it. When the fixed time or the time set by the user elapses, the interrupt display is erased.

[0003]

In the conventional navigation apparatus described above, if the display time of the interrupt information screen is lengthened, an operation for manually deleting the interrupt information is required, or the map information is hidden for a long time. There was a problem that would be.

[0004] In addition, there is a danger that the driver may be inadvertent in the forward direction by providing information for a long time. If the display time of the interrupt information screen is shortened, it disappears while it cannot be understood depending on the amount of information, and a redrawing operation may be required.

[0005] The present invention has been made in view of the above points, and an object of the present invention is to provide a navigation device that displays interrupt information for an optimal time according to a traveling state and the content of information to be displayed. To provide.

[0006]

SUMMARY OF THE INVENTION A navigation device according to the present invention is a positioning system using an artificial satellite.
A GPS receiver that receives position information from the S, a self-position calculator that calculates a self-position from information received by the GPS receiver, a recording medium reader that reads map data from a storage medium that stores map information, and a system operation. Input device for performing, the map data read by the recording medium reading device, a display device for displaying the self-position on the map based on the self-position calculated by the self-position calculation device, the information display screen as needed In a navigation device displayed on a display device, a time displayed on the information display screen is automatically set according to a traveling state and contents of the displayed information.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An on-vehicle navigation device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the configuration of an on-vehicle navigation device according to an embodiment of the present invention. The position detection unit 1 shown in FIG. 1 includes a GPS receiver 1a and a gyro sensor 1b. GPS receiver 1a
Is a receiver for receiving radio waves from artificial satellites of GPS (Global Positioning System).

The signal received by the GPS receiver 1a and the angle signal from the gyro sensor 1b are input to the microcomputer 5 via the input / output interface 2. The microcomputer 5 operates using the RAM 3 as a working memory according to the program recorded in the ROM 4, and calculates the position of the own vehicle from the signals of the GPS receiver 1a and the gyro sensor 1b. That is, the microcomputer 5 has a function as a host vehicle position calculation device.

The microcomputer 5 uses a CDROM to store a map in which the position of the vehicle is present or an arbitrary map specified by the key input from the key input input from the input device 10 or the vehicle position information obtained as described above. A command for reading from the map database is output to the recording medium reading device 7 which is a CDROM driver. The recording medium reading device 7 reads the map data from the map database based on the command and outputs the map data to the microcomputer 5.

The microcomputer 5 instructs the graphic controller 6 based on the map data and the vehicle position information obtained as described above, and causes the display device 9 to display a map screen with the vehicle position mark.

The microcomputer 5 further receives traffic information from a traffic information receiving unit 8 provided with an FM multiplex receiver 8a, an optical beacon receiver 8a, and a radio beacon receiver 8c. The microcomputer 5 displays an interrupt information screen such as traffic information on the map screen as necessary.

The display time of the interrupt information screen is automatically set to an appropriate time according to the running state, the information size, and the road state. Two examples of setting methods are shown below.

Method 1 The display time is determined by the display time setting table for each condition shown in Table 1.

[0014] A When there is no curve, intersection, or traffic light more than 100m ahead while driving on a straight road. B. When there is a curve, an intersection, or a traffic signal within 100 m ahead of the road on which the vehicle is currently traveling.

When the display time is set in accordance with the traveling speed in this manner, the time displayed during high-speed traveling is shortened, and the time of carelessness ahead by looking at the monitor is reduced. It may not be desirable to display for a long time at the same speed and the same amount of information, depending on the situation of the place. Attention time is reduced.

Method 2 A display time set value is determined by calculating from a numerical value representing the current state and the number of information. That is, the number of information in a page is determined in units of a character string of information to be popped up or one piece of traffic congestion information, and a travel distance of 10 m is basically assigned to each piece of information. Then, it is calculated by the following equation. Display time (seconds) = number of information in a page × 10 m / running speed (m / sec) × state coefficient However, when running speed is 10 km / h or less, 10 km / h, 80
Calculate as 80 km / h for km / or more. The state coefficient is set according to the road condition, and is: straight road: 1.0 Curve:
0.8 intersection: 0.6.

As described above, the display time of the interrupt information is determined by the method 1.
Alternatively, the time required for reading the information is automatically set by (2), so that the need for longer display than necessary and the necessity of redrawing operation is reduced. The state coefficient can be appropriately changed depending on the screen size or the like.

[0018]

According to the navigation apparatus of the present invention, the display time of the interrupt information is automatically set to the time required for reading the information, and set to an appropriate time to avoid danger. Therefore, the need for longer display than necessary and the necessity of redrawing operation is reduced. Further, the time during which the main map display is hidden by the continuous pop-up screen at the Metropolitan Expressway or the like can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an in-vehicle navigation device according to an embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Position detection unit, 1a GPS receiver, 1b Gyro sensor 2 I / O interface 3 RAM 4 ROM 5 Microcomputer 6 Graphic controller 7 Recording medium reader 8 Traffic information receiving unit, 8a FM multiplex receiver, 8
b Optical beacon receiver 8c Radio beacon receiver 9 Display device 10 Input device

Claims (1)

[Claims] 1. A GPS receiver for receiving position information from GPS, which is a positioning system using an artificial satellite, a self-position calculation device for calculating a self-position from information received by the GPS receiver, and a storage medium for storing map information Display device for reading map data from the device, input device for operating the system, map data read by the storage medium reading device, and displaying the self-position on the map based on the self-position calculated by the self-position calculation device A navigation device that includes a display device and displays an information display screen on the display device as needed, wherein a time for displaying the information display screen is automatically set according to a traveling state and the content of information to be displayed. Navigation device.