JPH1137768A - Navigation system for mobile body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a user perform change operation of a map minimum by allowing first and second maps displayed on the 2-screen to be different from each other in display mode, when a map is switched from a single screen display to 2-screen display. SOLUTION: A control device 6 obtains a current position based on the signals from a GPS receiver 1, a gyro 2, and a wheel speed sensor 3, and reads a map data out of a map data storage device 4, for displaying a road map containing a current position on a display device 7. Then the control device 6 performs 2-screen display process for a map for the display device 7 when a power source supply is started. In that case, a heading-up display (car's advancing direction is up on a map) is presented on a left side screen of the display device 7 while a North-up display (North is up on a map) on a right side screen in reduced size. Then, the control device 6 obtains a current position based on the signal from the wheel speed sensor 3m, for updating the display of current position and map.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation apparatus for a mobile object provided with a display device for displaying a map.

[0002]

2. Description of the Related Art Conventionally, various types of vehicular navigation devices have been proposed in which a map including the current location of a vehicle is displayed on a display device. In recent years, there has been proposed a display device in which the display device is horizontally long and displays a map on two screens divided into right and left, as well as displaying a map on one screen.

[0003]

In the prior art described above, when the map is switched from one-screen display to two-screen display, as shown in FIG. 4, the map displayed on one screen is copied as it is. Thus, the same map is displayed on the left and right two screens. For this reason, even if the user switches to the two-screen display, the user will end up seeing the same map, and there is a problem that one of the maps must be changed to the form desired by the user.

The present invention has been made in view of the above problems, and has as its object to minimize the need for a user to perform a map change operation when switching to a two-screen display of a map.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, when a user performs an operation of switching from a single screen display to a two screen display of a map, the display is switched to a two screen display. It is characterized in that the first and second maps to be displayed are displayed in different display forms.

[0006] Therefore, it is possible to reduce the need for the user to change the map as much as possible, as compared to the conventional two-screen display using the same map. In this case, the first and second map displays having different display forms include a heading-up display in which the traveling direction of the moving object is on the map and a map in which the north is displayed on the map. North-up display on top of
As in the invention described in (1), map displays of different scales can be displayed.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention. FIG. 1 shows an overall configuration of a vehicle navigation device according to an embodiment of the present invention. In the present embodiment, a GPS receiver 1, a gyro 2, and a wheel speed sensor 3 are provided to detect the current location of the vehicle. G
The PS receiver 1 receives a radio wave from an artificial satellite and outputs a signal indicating the current location of the vehicle. The gyro 2 outputs a signal according to the horizontal angular velocity of the vehicle. The wheel speed sensor 3 detects the traveling distance of the vehicle based on the number of rotations of the wheels and outputs a distance signal.

The map data storage device 4 includes a storage medium such as a CDROM and a DVD for storing map data, and outputs the map data to the control device 6. The input device 5 is operated by a user and outputs various operation signals necessary for navigation according to the operation. This input device 5
A touch switch that allows an input operation to be performed on the screen of the display device 7, a key operation unit provided around the screen of the display device 7, and the like. In addition, by the input operation to the input device 5, it is possible to switch between a one-screen display and a two-screen display, which will be described later.

The control device 6 is configured to include computer means such as a microcomputer, and fetches signals from the above components 1 to 5 to execute various arithmetic processes required for navigation. In this arithmetic processing,
The calculation processing includes obtaining a current position from signals from the GPS receiver 1, the gyro 2, and the wheel speed sensor 3, reading map data from the map data storage device 4, and displaying a road map including the current position on the display device 7. ing.

The display device 7 is provided on the instrument panel of the vehicle, and displays a road map including the current position of the vehicle. The display device 7 is horizontally long and can display a map not only on one screen but also on two screens divided into right and left. As the display device 7, a liquid crystal display device, a CRT
A display device or the like can be used.

In the above configuration, when a key switch (Acc switch or an ignition switch) of the vehicle is turned on, the control device 6 is supplied with power from a vehicle-mounted battery and starts executing various arithmetic processes required for navigation. FIG. 2 shows a partial calculation process of the control device 6. At the start of power supply, the control device 6 first executes a map two-screen display process for causing the display device 7 to display a map on two screens (step 101). FIG. 3 shows a display example of the display device 7 in this case. Heading-up display on the left screen (vehicle traveling direction is on the map)
Is displayed, and a north-up display (a display in which the north is on the map) is performed on the right screen at a scale different from that of the heading-up display.

Thereafter, the control device 6 controls the GPS receiver 1,
The current position is obtained from the signals from the gyro 2 and the wheel speed sensor 3, and processing for updating the display relationship between the current position and the map is performed according to the current position. In addition, various processes according to the input operation to the input device 5 are executed. For example, processing is performed to switch from map two-screen display to map one-screen display, to switch between heading-up display and north-up display, and to change the scale on this map one screen.

The user inputs a map 1 to the input device 5.
When an operation for switching from the screen display to the map two-screen display is performed, the control device 6 determines that the operation has been performed (step 102), and executes a map two-screen display process (step 103). This map two-screen display processing is the same processing as step 101, and causes the display device 7 to perform heading-up display and north-up display shown in FIG.

Therefore, when the switching operation from the map 1 screen display to the map 2 screen display is performed, the display device 7 performs the two screen display by the heading up display and the north up display. As compared with the case where two screens are displayed on the same map as described above, the operation of changing the map by the user can be omitted as much as possible.

In the above-described embodiment, when the display is switched from the map one-screen display to the map two-screen display, the scale is changed in addition to the heading-up display and the north-up display. However, the maps may be displayed in different display forms. Further, the maps having different display forms may be other display forms such as a front wide display other than a heading-up display and a north-up display and / or a display having a different scale. Further, the screen division in the display device 7 is not limited to the one divided into right and left, and may be the one divided vertically in a vertically long display device.

Further, since a menu is normally displayed on the display device 7 in addition to the map, when the menu display is switched from a single screen to a map two-screen display, maps having different display forms are used. May be displayed. Further, the present invention is not limited to application to vehicle navigation, but may be applied to moving objects such as ships.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an overall configuration of a vehicle navigation device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a calculation process of a control device 6 in FIG.

FIG. 3 is a diagram illustrating a display example when displaying a map on two screens according to an embodiment of the present invention.

FIG. 4 is a diagram showing a display example when a conventional map is displayed on two screens.

[Explanation of symbols]

1. GPS receiver, 2. Gyro, 3. Wheel speed sensor,
4 ... Map data storage device, 5 ... Input device, 6 ... Control device, 7 ... Display device.

Claims (3)

[Claims] A display device for displaying at least a map, wherein a display of the display device can be switched between a one-screen display and a two-screen display by a user operation; As the screen display, the first and second maps
A two-screen display of a map to be displayed on a screen. When the user performs an operation of switching from the one-screen display to the two-screen display of the map, the first and second maps are displayed.
A navigation apparatus for a mobile object, wherein the map is displayed in different display forms. 2. The display of the first map is a heading-up display in which the traveling direction of a moving object is on a map.
The navigation apparatus according to claim 1, wherein the display of the second map is a north-up display in which the north is on the map. 3. The mobile navigation device according to claim 1, wherein the first and second maps are displayed in different scales.