JP2705882B2 - Map display control method at point selection in navigation system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation system, and more particularly, to a map display control method when selecting a point in a navigation system.

[0002]

2. Description of the Related Art A navigation system is a system for guiding an operation by displaying the current position, traveling direction, destination and the like of a vehicle on a map using a display. Current navigation systems receive the radio waves from satellites, measure the current position of the vehicle, and use the CD-
In addition to a navigation function for displaying on a map (digital map) read from the ROM, there is an integrated service function and a digital map function. The integrated service function
Various service information recorded on the CD-ROM (for example, information on facility contents / charge for hotels)
Is a function that allows the user to check the location. The location recorded on the CD-ROM can be displayed on a digital map. The digital map function is a function that allows the user to view map information stored on a CD-ROM in the same manner as an atlas.

[0003]

However, in a conventional navigation system, there are several points having service information in a display map, and when any one is selected to display the service information, the point is selected. Was only displayed in different colors. for that reason,
If the selected point is near the edge of the screen,
It was very confusing.

[0004] In view of such circumstances, an object of the present invention is to provide a navigation system capable of clarifying a selected point among a plurality of points having service information in a display map. It is in. That is, an object of the present invention is to further improve serviceability in a navigation system.

[0005]

SUMMARY OF THE INVENTION A map display control method for selecting a point in a navigation system according to the present invention, which has been devised to achieve the above object, is intended to allow a user to specify execution of a desired function. Reading means for reading the map data and the service information from a storage medium containing the map data and the service information about a plurality of specific points, and a display for displaying the read map data and the service information Navigation means comprising:
In the system, map data around the map data displayed on the display means is also read out , and when one or more points having the service information are present in the map displayed on the display means, the map is displayed. Together with the points, and when any of the points is selected by the operation means , switches to the map display of an area having the selected point as the center of the display screen of the display means.
It is characterized by being displayed alternately .

[0006]

[Operation] Since the display device is constructed as described above,
With service information displayed with the map
When one of the points is selected, the selected point is always displayed at the center of the display screen. Therefore, the user can immediately determine which point on the map is selected.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic block diagram showing a hardware configuration of a navigation system according to one embodiment of the present invention. In FIG. 1, reference numeral 10 denotes operation keys, reference numeral 20 denotes a main microcomputer, reference numeral 30 denotes a display drive circuit, reference numeral 40 denotes a display, and reference numeral 50 denotes a display drive circuit.
Is a microcomputer for CD-ROM, 60 is C
A decoder for D-ROM, reference numeral 70 indicates a CD-ROM, and reference numeral 80 indicates a communication interface. The main microcomputer 20 is connected via a communication interface 80 to
The map data and the like are read from the CD-ROM microcomputer 50 and displayed on the display 40. Then, if there is a key operation by the operation key 10, a predetermined process is executed according to the input.

When the map is displayed by a key operation, the center point of the displayed map has a positional relationship shown in FIG. 3 with respect to all the drawing areas on the memory in the main microcomputer 20. It is configured as follows.
In other words, the display screen center point (x mark) is located in a center area in the entire drawing area (an area of a certain range (for example, one display screen) centered on the center point of the entire drawing area). ing. FIG. 3 shows a case where the entire drawing area on the memory is for nine display screens and a case where it is for four display screens.

In order to keep the center point of the display screen within the center area as described above, if the center point of the display screen moves out of the center area by scrolling a map or the like, the entire drawing area is rewritten and the display area of the display screen is rewritten. The center point is within the center area. FIG. 4 shows an example of the processing, in which all drawing is performed so that the center area changes from the map "5" to the map "7" in accordance with the movement of the center point of the display screen as indicated by the arrow in the figure. The state where the area is rewritten is shown.

FIG. 2 shows a main microcomputer 2
9 is a schematic flowchart showing a processing procedure of No. 0. In step 1000, initial settings such as clearing a flag or the like or displaying an initial screen are performed. Next, it is determined in step 1001 whether or not there is a switch input (key operation) from the user, and if so, the processing is performed in step 1002. In the case where there is no switch input and after the switch processing is completed, in step 1003, it is determined whether or not the vehicle position is updated. If it has been updated, the determination of the map display update is made in step 1004, and the map display is performed (step 100).
5). When the above processing is completed, step 1001 is performed again.
And repeat the same processing.

FIG. 5 is a flowchart showing the switching process in step 1002 in the above procedure. First, in step 102, it is determined whether or not the key operation selects a certain point having service information. If so, in step 104 the service information for the selected point is
Read from M70. Then, in step 106, the display screen is switched to the display screen centering on the selected point, and in step 108, the read service information is overlapped as a part of the display screen. FIG.
Shows an example of a change in the map display screen due to the above-described processing. When a point "A" in the figure is selected, the point is displayed as the center of the display screen.

Although one embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and it is easy for those skilled in the art to devise various embodiments. For example, it is possible not only to display the selected point in the center of the screen but also to make it blink further for further clarification.

[0014]

As described above, according to the present invention, the selected point is always displayed at the center of the display screen among the plurality of points having the service information in the display map. This has the effect of clarifying the point. That is, the serviceability of the navigation system is further improved.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram illustrating a hardware configuration of a navigation system according to an embodiment of the present invention.

FIG. 2 is a schematic flowchart showing a processing procedure of a main microcomputer.

FIG. 3 is a diagram for explaining a relationship among an entire drawing area, a center area, and a display screen.

FIG. 4 is a diagram for explaining movement of a center area by scrolling a map or the like;

FIG. 5 is a schematic flowchart showing a procedure of an interrupt process by a key operation during map display, which is one of switch processes.

FIG. 6 is a diagram illustrating an example of a change in a map display screen due to point selection.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Operation key 20 ... Main microcomputer 30 ... Display drive circuit 40 ... Display 50 ... CD-ROM microcomputer 60 ... CD-ROM decoder 70 ... CD-ROM 80 ... Communication interface

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazumi Miyazaki 1-2-28 Goshodori, Hyogo-ku, Kobe City, Hyogo Prefecture Inside Fujitsu Ten Co., Ltd. (72) Takako Fukuda 1-chome, Goshodori, Hyogo-ku, Kobe City, Hyogo Prefecture No. 28 No. 28 in Fujitsu Ten Limited (56) References JP-A-63-12912 (JP, A) JP-A-3-137673 (JP, A) JP-A-5-88612 (JP, A) JP-A Sho 62-151881 (JP, A) JP-A-5-181415 (JP, A)

Claims (1)

(57) [Claims] An operation means for a user to specify execution of a desired function, and a reading means for reading map data and service information from a storage medium containing map data and service information about a plurality of specific points. And a display means for displaying the read map data and service information. A map around the map data displayed on the display means.
Data is also read out , and when there is one or more points having the service information in the map displayed on the display means, those points are displayed together with the map, and any of the points is When selected by the operation means, the selected point is switched to a map display of an area centered on the display screen of the display means and displayed.
And a map display control method when selecting a point in the navigation system.