JPS63115190A - Map data display device - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] A. The field of application in the R industry has failed! A relates to a device that reproduces map data recorded on a recording medium such as a disk and displays it on a display screen.

A technique for recording I/C map data on a recording medium such as a disk, a tape, etc. and displaying it on a display means such as FCRT is disclosed in, for example, Japanese Patent Application Laid-Open No. 59-64985 (HO4N5/91).
It is disclosed in the March 24, 1986 issue of the magazine "Nichi 4 Enochtronics", pages 92-95.

By the way, considering the case where such a map data display device is installed in a car and used while driving, in addition to displaying a normal map, it can also display detailed maps of important points (for example, intersections) on the map. Display may be desired. ! #Kaisho 59
No. 64985 () 104NS/93) discloses that an enlarged map is displayed if necessary, but there is no disclosure that an enlarged map is displayed in a smaller size than a normal map.

Ha1 A book about the problems that inventions are trying to solve! A light is more detailed than a normal map if necessary.
It is intended to provide an easy-to-read map VI by using ft display and by considering the display direction.

2. Problem 'Means for determining KM failure BA is configured to be displayed on regular map updates and, if necessary, on detailed map information of specific points on this regular map information.
Further, when displaying detailed map information, a display direction instructing circuit is provided which instructs the display direction of the detailed map information according to the traveling route specified in advance based on the normal map information after being displayed.

When displaying detailed map information, the display direction indicating circuit can display detailed map information that matches the driver's driving direction, and an easy-to-read map is displayed.

The recording medium for recording the example map data is CD-)tOM.
Discs can be used. The format for recording data conferences on a CD-ROM disk is introduced, for example, in the magazine "Ko V Ctronics", February 1985 issue, pages 875 to 80, and since it is not the gist of the present invention, an explanation will be given here. Omitted. The CD-FIOM disk has a large memory capacity of 8, and it can record regular map information and image data, as well as store specific points such as 9
, Detailed map information at the trailing point can also be recorded as image data.

Figure 82 (The gradient indicates the normal map information (image data) of the area displayed on the display screen, and the specific point (
In this embodiment, numbers are assigned to road points connected to maps of other areas (intersections) and other area maps, and these numbers are also displayed on the screen. Figure 2 (The cut is at a specific point (intersection)
The display 1ljjdτ of the Ffa map information shown in FIG. In addition, the numbered points on the regular map shown in Figure 2 (&) are the travel distance wr.
This is used when specifying t-, and this point will be explained in detail later.

Fig. 1 shows a map data display system*1 according to the present invention, and a disk drive device (1) is a device for reading map data from a CD-ROM disk, including an optical pickup, a disk rotation drive device, etc. including. The signal processing circuit (2J includes a circuit that demodulates the reproduced geological data + f signal and performs error detection and correction, etc.). After such processing is performed, the map information is usually stored in the map data memo 9 (3). Then, the detailed map information of specific points attached to Mayu's normal map is stored in the special point data memory (4).The normal map information stored in the map data memory (3) is the map surface image. #J image is created in the creation circuit (5) and stored in the image memory (6
) and then displayed on the screen of the display means (CRT) (9) based on the instruction signal from the control circuit (71).

Based on the normal map (Fig. 2 a) displayed on the screen of the display means (CRT) (97), the driving route is displayed, for example, ◎-→■-
An instruction is given using an input device (such as a numeric keypad, etc.), such as from ■ to ■. Information regarding this travel route is stored in a display direction instruction circuit (ill).

If it is necessary to display a detailed map of a specific point from the normal display state of Figure 1, input the number of that specific point using the input device αQ. The detailed map information of the specific point corresponding to the number is read out from the specific point data memory (4) and input to the specific point image creation circuit C1211C. is also input and compared with the previously stored travel route, and the direction of the detailed map of the specific point created by the specific point image creation circuit α is instructed to the specific point image creation circuit. For example, if a specific point ■ is instructed to be displayed on the normal map shown in Figure 42(a), the driving route 0→■→■→
. . , a detailed map in the display direction as shown in FIG. 2(b) can be created using the fixed point image creation circuit.

When the display of a detailed training map of a specific point is instructed by the input device αC, the image memory (6) is cleared by an instruction signal from the display control circuit (power), and then the output from the specific point image creation circuit port is transferred to the image memory (6). 6), and the detailed map of the specific point is displayed on the screen of the display means (81).

0 Effects of the Invention According to the present invention, in addition to the normal map, can a detailed map of a specific point be made?
The map can be displayed in an easy-to-read manner, and the display direction matches the user's driving direction.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a map data display device according to the present invention;
FIG. 2 (aJ (b) is a diagram showing a normal map and a detailed map.

Claims (1)

[Claims] (1) A display device for a map data recording medium in which normal map information and detailed map information of a specific point on the normal map information are recorded, and the drive is specified in advance based on the displayed normal map information. A map data display device comprising a display direction instruction circuit for instructing a display direction of the detailed map information to be displayed according to a route.