JPH05241506A - Map display device - Google Patents

Abstract

PURPOSE:To optionally input a display area and to easily set the l enlargement and reduction of a map being displayed by pushbutton operation by providing a transparent touch panel which is arranged on the surface of a display and a display scale varying means. CONSTITUTION:The device is equipped with an auxiliary storage means 5 which reads map data out of a storage device 4 and stores them, the display 2 which reads the map data out of the auxiliary storage means 5 and displays them, the transparent touch panel 1 which is formed transparently on the surface of the display 2 and generates a position coordinate output on the displayed map data, and a control means 3 as the display scale varying means which moves the display area according to the output of the panel 1 and varies the display scale of the map data continuously or stepwise according to the depression time of the panel 1. Then the transparent touch panel 1 is only touched to move an optional position on the display map to the center of the screen, and scroll, enlarge, and reduce the map screen in optional directions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a map display device mainly applied to an on-vehicle navigation system.

[0002]

2. Description of the Related Art Most of vehicle-mounted navigation systems display a map and the position of the vehicle on a display screen.

The map data is stored in a storage device such as a CD-ROM.
The map data stored in the storage device is read from the storage device in a scale corresponding to the degree of detail, and the required display area is selected and displayed.

[0004]

The above-mentioned display area and scale are designated and selected by operating the cursor keys or switches arranged around the display, but the number of keys is large and complicated. There is a problem that the operation by the person is accompanied by danger.

[0005]

In order to solve the above problems, the present invention directly inputs an arbitrary position in a display area by a transparent touch panel arranged on the surface of a display and enlarges / displays a map being displayed. The reduction can be easily set with one touch.

In the second aspect of the present invention, the map being displayed is enlarged / enlarged.
The reduction can be switched at each touch.

[0007]

1 is a schematic block diagram showing the configuration of an embodiment of the present invention, in which 1 is a transparent touch panel, which is formed on the surface of a display 2, a control means 3, a storage device 4, and an auxiliary storage. The device 5, the distance sensor 6 for detecting the traveling distance of the vehicle, and the direction sensor 7 for detecting the traveling direction of the vehicle are connected together.

FIG. 2 is an operation flowchart relating to the transparent touch panel 1 of the control means 3 in the display device of FIG.

FIG. 3 shows a change in map display scale when the central portion of the transparent patch panel 1 is pushed.

The map data around the vehicle position obtained by the distance sensor 6, the direction sensor 7, etc. is read from the storage device 4 and temporarily stored in the auxiliary storage means 5, and the display device 2 stores the auxiliary storage device. The map and the vehicle position are displayed based on the map data stored in the means.

The display used does not simultaneously satisfy the size of the display area and the detail of the display.
The scale according to need is selected and displayed. The operation of the present invention will be described with reference to the flowchart of FIG.

When the transparent patch panel 1 is touched and a point on the displayed map is designated, the center of the display moves to the designated point.

When the touch is continued as it is, the display continuously moves (scrolls) in the moving direction.

When the center of the transparent patch panel 1 is touched, the center of the display does not move, and according to the enlarging / reducing mode, the enlarging rate or the reducing rate is increased to a predetermined limit with the continued touching time. Is displayed.

When the predetermined limit is reached, the mode is reversed.

The mode can be reversed each time the touch is made.

The display scale changing means is included in the control means.

[0018]

As described in the above embodiments, according to the present invention, by simply touching the transparent touch panel, it is possible to move an arbitrary position on the displayed map to the center of the screen, scroll the map screen in an arbitrary direction, and reduce the scale. It has a very convenient feature that it can be enlarged and reduced.

[Brief description of drawings]

FIG. 1 is a schematic block diagram showing the configuration of a position embodiment of the present invention.

FIG. 2 is an operation flowchart regarding a transparent touch panel in the in-vehicle map display device of FIG.

FIG. 3 shows a change in scale of a displayed map when a central portion of a transparent touch panel is pressed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transparent touch panel 2 Display 3 Control means 4 Storage device 5 Auxiliary storage means 6 Distance sensor 7 Direction sensor

Claims (2)

[Claims] 1. A recording device for storing map data, an auxiliary storage device for reading and storing the map data from the recording device, a display device for reading and displaying the map data from the auxiliary storage device, and a surface of the display device. A transparent touch panel that is transparently formed on the map data and generates position coordinate output on the displayed map data, and the display area is moved according to the output from the transparent touch panel, and the continuous touch panel is continuously moved according to the pressing time of the transparent touch panel. And a display scale changing means capable of changing the display scale of the map data stepwise. 2. The map display device according to claim 1, wherein the display scale changing means switches between enlargement and reduction alternately each time the transparent touch panel is pressed.