JP2784999B2 - Electronic map display - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic map display device for driving a car, and more particularly to a data processing method for a recording medium.

[0002]

2. Description of the Related Art In a conventional electronic map display system, map data and service information related to the map are recorded together on a CD-ROM serving as a database, and data on one CD-ROM is read. In addition, a map of the destination or service information of the destination is displayed on the screen.

[0003]

In the conventional system described above, when adding or changing service information, it is necessary to replace a basic database.
There is a drawback that scalability and maintenance of service information are difficult.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object to store basic data for map drawing and service information related to a map, respectively. An object of the present invention is to provide an electronic map display device which can be easily expanded and maintained by separately recording the information on a CD-ROM.

[0005]

An electronic map display device according to the present invention includes a CD-ROM driver for reading data from a CD-ROM on which map information is recorded, a vehicle position detecting device, a map screen and a vehicle position. In an electronic map display device including a video processing device for displaying, an input device, and a main controller for controlling the whole, a CD-ROM in which basic data for map drawing and service information related to the map are separately recorded. Are processed simultaneously or as replacements, so that the data can be read and the map and service information can be combined and displayed on the same screen.

[0006]

According to the electronic map display device of the present invention, by replacing or adding a recording medium on which the service information is recorded, the contents of the service information are updated, and
You can get service information of different items from before, and these service information is a screen synthesized with the map screen,
Alternatively, it can be viewed on the display device as a service information screen.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An electronic map display device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of an electronic map display device according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a video processing device, which expands and stores image information on a video RAM 1c by a graphic controller 1a, and converts the data stored in the video RAM 1c into a video signal by the graphic controller 1a to generate a CRT. , And an image is displayed on a display device 1b such as an LCD. Reference numeral 2 denotes a CD-ROM driver which reads map information from a map database 2a including a CD-ROM. 3 is a CD-ROM driver,
The service information is read from the CD-ROM 3a storing the service information. Reference numeral 4 denotes an input device such as a remote controller, a light pen, and a touch switch. Reference numeral 5 denotes an own-vehicle position detecting device, which calculates the own-vehicle position based on a GPS receiver 5b for receiving radio waves from artificial satellites of the global positioning system, a sensor 5c such as a direction sensor and a vehicle speed sensor, and output signals of these. It is composed of a host vehicle position calculation device 5a. 6 is a main controller for controlling the whole.

Next, the operation of the embodiment will be described with reference to the flowchart of FIG. When the apparatus is in the operating state, first, in step S1, the image processing apparatus 1, the CD-ROM driver 2, the CD-ROM driver 3, the input device 4, and the vehicle position detecting device 5 are initialized. Next, the process proceeds to step S2 to determine whether or not the map database 2a has been inserted into the CD-ROM driver 2. If the map database 2a has been inserted, the process proceeds to step S3 to select a map. . The selection of the map is performed by inputting a target address using the input device 4 or inputting from the own vehicle position detecting device. Next, the process proceeds to step S4, where a map with the input address is searched and read by the CD-ROM driver 2, and data output from the CD-ROM driver 2 is processed by the main controller 5 and sent to the graphic controller 1a. . The graphic controller 1a develops and stores the input signal as image data on the video RAM 1c. The data developed on the video RAM 1c is converted into a video signal by the graphic controller 1a, sent to the display device 1b together with the synchronization signal, and the selected map is displayed as a screen as shown in FIG. Next, the process proceeds to step S5, where it is determined whether there is a service information display request from the input device 4. If there is no service information display request, the process proceeds to step S10. If there is a service information display request, the process proceeds to step S6. The display of the service on the screen in FIG. 3A is a guide message for requesting the display of the service information. In step S6, target service information is selected from a menu. Next, in step S7, the CD-ROM 3a in which the target service information is recorded is stored in a CD-ROM.
Insert it into the ROM driver 3. Next, in step S8, it is determined whether or not a predetermined CD-ROM 3a is inserted. If it is, the process proceeds to step S9 to display service information. Depending on the type of the service information, the service information is displayed by being combined with the map screen as shown in FIG. 3B, or displayed by switching the screen of the display device as shown in c or d of FIG. Next, step S1
Move to 0. In step S10, the process waits until a screen switch or an end is input from the input device.
If there is a screen switching input, step S2 is repeated, and if there is a termination instruction, the operation is terminated.

Although the embodiment is configured as described above, the invention is not limited to this. For example, the CD-ROM driver may be replaced with a single CD-ROM driver to obtain map information and service information. . Further, a CD-ROM may be automatically selected by providing an autochanger.

[0010]

According to the electronic map display device of the present invention,
By separately recording the basic data for map drawing and the service information related to the map on a CD-ROM, scalability and maintenance of the service information are facilitated.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of an electronic map display device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the embodiment.

FIG. 3 is a diagram showing an example of a display screen according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Image processing apparatus 2 CD-ROM driver 3 CD-ROM driver 4 Input device 5 Own vehicle position detection device 6 Main controller

Claims (1)

(57) [Claims] 1. A CD-ROM driver for reading data from a CD-ROM on which map information is recorded, a vehicle position detecting device, a video processing device for displaying a map screen and a vehicle position, and an input device. In an electronic map display device comprising a main controller for controlling, a basic data for map drawing and service information related to a map are separately or simultaneously processed by replacing a CD-ROM , or the data is processed by replacing the data. An electronic map display device capable of combining reading, maps, and service information on the same screen.