JPH06202557A - Electronic map display device - Google Patents

Abstract

PURPOSE:To provide the safe electronic map display device which enables a user to easily view and judge maps by subjecting a map mode set by the user to judgment processing in accordance with the map mode and displaying only the selected map mode. CONSTITUTION:A main control section 3 executes the judgment processing so as to display only the broad roads, such as national roads, trunk roads and highways, without displaying narrow alleys on a display means 4 among pieces of the map data read out by a map information reading out means 2 from a map information memory means 1 when the narrow roads in the map display are displayed by electronic maps at frequently observed low magnifications in the case the user sets an unknown land mode in the main control means 3 by an input means 5. The information on slightseeing places is previously assured in the map information memory means 1 and the information is mainly displayed on the display means 4 if the user sets a slightseeing place mode in the main control means 3 by the input means 5. The roads of a wide range where the slightseeing place does not exist and the map information having no relation with the slightseeing place are omitted and the map display is not executed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention stores a map or the like on a large capacity medium such as a compact disc (hereinafter referred to as a CD),
The present invention relates to an electronic map display device that performs various types of processing and displays.

[0002]

2. Description of the Related Art In a conventional electronic map display device, a CD
A map stored in a large-capacity medium such as has originally various information. Not only trunk roads such as national roads but also detailed roads are listed. Also, the main facilities represented by symbols,
Tourist sites, etc. are also usually listed. The conventional electronic map display device does not read the information from the map information storage means such as a CD and displays it according to some condition, but displays it as it is, and the user uses it.

[0003]

However, since various kinds of information are included in the map displayed as described above, while such a map can be used to understand various things, it is necessary to carefully view the map. Otherwise, the information required by the user cannot be easily obtained. Furthermore, it is extremely difficult to obtain the necessary information at a glance. For example, in the case of a display device for navigation in a moving body such as a car, a map that cannot be determined at a glance is fatal and poses a serious safety problem.

In view of the above points, the present invention has an object to provide a safe electronic map display device which is easy for the user to see and judge.

[0005]

According to the present invention, a map information storage means for storing map information, a map information reading means for reading map information from the map information storage means, and a map information reading means for reading the map information. Main control means for discriminating the map mode set by the user based on the map data, display means for displaying the map mode set by the user by the main control means, and the user setting in the main control means An input means for inputting a desired map mode and a current position confirmation means for inputting the current position of the user to the main control means, and the map based on the map mode desired by the user input by the input means is displayed. It is characterized in that the main control means performs judgment processing so as to display on the means.

[0006]

According to the present invention, of the map information read from the map information storage means by the map information reading means, the main control means is based on the map mode set by the user through the input means, and the main control means is set to the set map. Since the mode can be determined and displayed on the display means by being limited to the map mode selected by the main control means, it is easy for the user to see and judge, and safe driving operation of the vehicle can be performed. .

[0007]

EXAMPLES As an example, a navigation system using an electronic map display device having various map modes will be taken up. FIG. 1 is a functional block diagram of an electronic map display device according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a map information storage means, which has a large capacity for storing many maps, is inexpensive and easy to make, is easy to carry, and is a portable disk system, and also has a high access speed for downsizing. It is a memory card that has no mechanical drive unit for orientation and reading, and can be expected to reduce costs in the future. Reference numeral 2 is a map information reading means for reading the map information stored in the map information storage means, and reads necessary map information from the contents of the map information storage means 1 according to the map mode set by the input means 5. Reference numeral 3 denotes control of the map information reading means 2, decoding and processing of map data read by the map information reading means 2 from the map information storage means 1, processing for judging and displaying input from the user, and others. It is the main control means that performs various processes. Reference numeral 4 is a display means for displaying map information according to a map mode, such as a TFT type LCD which can be easily thinned and a clear image can be obtained, a large size and inexpensive CRT and the like. Reference numeral 5 is an input means for the user to input a required map mode, such as a keyboard or a more user-friendly joystick type or mouse type. 6 is a current position confirmation means,
Notifying the main control unit 3 of the current position when performing navigation, for example, GPS (Global Positioning Sy)
stem) is used.

The operation of the electronic map display device will be described below. Here, the user sets a land mode, which is not known as an example of an easy-to-see map of the electronic map display device, by the input means 5 to the main control means 3. Tell me about the case. This unknown land mode is a convenient land mode when the user visits the land for the first time. In general, when you visit a land for the first time, you never go into a narrow alley. Therefore, the conventional display on the display means 4 such as a narrow alley 7 on an unknown land shown in FIG. 2 (1) may be a dangerous map because it is difficult to see during navigation. high.

In the map display in the unknown land mode set in this embodiment, the narrow road is displayed as shown in FIG. 2 (2) when the electronic map is displayed at a low magnification which is often used. In the map data read from the means 1 to the map information reading means 2, the narrow alley 7 is not displayed on the display means 4 and the main control means 3 is arranged so as to mainly display only the wide road 8 such as a national road, a main road or a highway. Make a judgment. In addition, since it is difficult to see the map on unknown land, it is easier to understand if the traveling direction is always on and the vehicle position 9 is also displayed. As described above, the user sets the unknown land mode by the input means 5, the main control means 3 judges this input, and the above processing is added to the display data to display it on the display means 4. An electronic map display device that can be easily determined can be realized.

Next, a case where a tourist spot mode is set in the main control means 3 by the input means 5 as another mode will be described. This mode is a mode in which only the information related to the tourist spots in the area currently displayed on the display means 4 is displayed. While it is natural for navigation while visiting sightseeing spots, there is a high possibility that other map information will be an obstacle and hinder the easy-to-understand map.

Further, what is required is the direction in which the tourist resort exists, whether there are many tourist resorts, what kind of tourist resorts, and the like. Therefore, information on tourist spots is secured in advance in the map information storage means 1 (CDs containing such information are already on the market), and the information is displayed mainly on the display means 4 for other tourist attractions. Maps that are not related to roads and sightseeing spots without a ground are omitted and not displayed.

In FIG. 3, the user can input the tourist resort mode from the conventional display (FIG. 3 (1)) in the vicinity of the tourist resort in this way (FIG. 3 (1)).
The main control means 3 judges this input and applies the above processing to the display data and also displays the own vehicle position 9 on the display means 4 as shown in FIG. It is possible to provide the user with a safe and easy-to-determine electronic map display device.

As another mode, the case where the navigation mode is set in the main control means 3 by the input means 5 will be described. This is a mode in which the map is cleaner than in normal navigation of a vehicle or the like, and in the present embodiment, as shown in FIG. 4 (1), the vehicle position 9 is conventionally placed on the running position of a large wide road 8. As shown in FIG. 4 (2), the own vehicle position 9 is placed at the lower end of the display means 4 and many map displays in the traveling direction are taken, and the road information of other branches centering on the road on which the own vehicle is This is a mode in which the main control means 3 performs the determination processing so that only the display is performed and the visibility of the map on the display means 4 is improved. Also in this case, the user can immediately shift to this mode from normal navigation simply by setting this mode, and an easy-to-see map can be obtained.

Next, the case where the highway mode is set in the main control means 3 by the input means 5 will be described. Figure 5 by car
When passing through the high-speed wide road 8 shown in (1), there is no need for information other than highway-related items (eg parking areas, service areas, interchanges), and usually high-speed movement is fast, so it is the largest scale. Then the display range will shift immediately. Therefore, in the expressway mode, the user inputs 5
When the main control means 3 judges this input and the main control means 3 judges that the current position confirmation means 6 has boarded the highway, the display on the display means 4 is displayed as shown in FIG. As shown in), the display screen is not frequently rewritten by making it easy to see only the expressways and selecting the scale of the map displayed on the display means 4 according to the moving speed of the user. A user-friendly map can be provided.

The visibility can be improved by placing the vehicle position 9 at the lower end of the display means 4 and displaying a large number of maps in the traveling direction and centering on the road position where the vehicle is on.

[0016]

As described above, in the electronic map display device of the present invention, the main control means judges the set map mode based on the map mode set by the user through the input means, and displays it on the display means. Can be displayed only in the map mode selected by the main control means, so that it is easy for the user to see and judge, and safe driving operation of the vehicle can be performed.

[Brief description of drawings]

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

2 is a map display example of an unknown land mode according to FIG. 1; FIG.

FIG. 3 is a diagram showing an example of a map display in a tourist spot mode according to FIG.

4 is a diagram showing an example of a map display in the navigation mode according to FIG.

5 is a map display example of the highway mode according to FIG. 1. FIG.

[Explanation of symbols]

1 ... Map information storage means, 2 ... Map information reading means,
3 ... Main control means, 4 ... Display means, 5 ... Input means,
6 ... Current position confirmation means, 7 ... Narrow alley, 8 ... Large wide road, 9 ... Vehicle position.

Claims (1)

[Claims] 1. A user based on map information storage means for storing map information, map information reading means for reading map information from the map information storage means, and map data read by the map information reading means. Main control means for discriminating the map mode set by the user, display means for displaying the map mode set by the user by the main control means, and input means for inputting the map mode desired by the user to the main control means. And a current position confirmation means for inputting the current position of the user to the main control means, and the main means for displaying a map based on the map mode desired by the user input by the input means on the display means. An electronic map display device characterized in that control means performs judgment processing.