JPH03116379A - System for retrieving map image data in map information processor - Google Patents

Abstract

PURPOSE:To effectively and exactly retrieve information in map image data in a short time by providing a place name index table, map index table and map image file. CONSTITUTION:A place name inputted by a user is indexed by a place name index table 6 equipped with geographical coordinate data and coordinate data, where the place is existent, are found out. Then, a display range including the coordinate data is indexed by a map index table 7 and a place storing the said data is found out. By referring the storing place, map image data are read out from a map image file 8 and displayed. Thus, only by inputting the place name, the user can automatically and speedily display the map image data including an area where the place name is existent.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is a map information processing device that stores various digital map image data for different regions and reads desired map image data from the storage device and displays it at any time. In particular, the present invention relates to a search method for map image data in a map information processing device that efficiently searches for desired map image data from a storage device.

(Conventional technology) Conventionally, there are no search methods for this type of map image data.

Seventy different names were assigned to each type of digital map image data stored in a storage device, depending on region or region, and the corresponding map image data was searched by the name of the map image data.

And the user's operation procedure is generally as follows.

First, the user inputs the name of the map image data that is divided into regions or regions that are thought to include the point desired to be displayed. Next, the user observes the displayed map image based on the search results based on the name of the map image data, and goes through the process of searching for desired information.

(Problems to be Solved by the Invention) The search method for map image data in the conventional map information processing apparatus described above is to search by the name of the map image data.

The user's operation procedure is also complicated, land undulations, roads.

Contains a wide variety of information such as rivers, place names, etc.

The disadvantage is that the desired information must be searched among the map images that are intermingled with each other. Furthermore, if the desired information is not found in the friend map image data when it is searched and displayed, it is necessary to input another map image data name and repeat the search and display, which takes time until the desired information is found. It has the disadvantage of being too much.

The object of the present invention is to eliminate such drawbacks.

An object of the present invention is to provide a method for searching map image data in a map information processing device, which allows easier input operations and takes less time to search than conventional methods.

! In addition to the above, it is a further object of the present invention to provide a method for searching map image data in a map information processing device in which display contents are presented in a way that is easy for the user to view.

(Means for Solving the Problems) In order to achieve the above object, the map image data search method in the map information processing device of the present invention includes a storage means for storing the map image data as a file and a display for displaying the map image. In a search method for map image data of a map information processing device which has a means 3 and selects a map image corresponding to a user's operation input from the storage means and reads it out and displays it on the display means 3, the device is provided with a place name and a name. A place name index table 6 having geographical coordinate data where the place name is located, and a display means 3
A map index table 7 containing data indicating the displayable range of geographic image data and its storage location indicating the range displayed in geographical coordinates, and a map image file 8 containing various map image data by region are stored. A first means (step 1) comprising a storage means and sequentially collating the place name data input by the user with the place name data in the place name index table 6. 12
) and when it is determined that they match as a result of the matching, the coordinate data where the place name of the input place name data is located is read out from the place name index table 6, and the displayable range of the map image data in the map index table 7 is indicated. a second means for sequentially comparing the coordinate data with the data (steps 13, 14.15); and when it is determined that the coordinate data of the input place name is within the displayable range of the map image data, the corresponding a third means (steps 16.17 and 18.19) for reading out and displaying map image data to be displayed from the map image file 8 by reading out data indicating a storage location of the map image data to be displayed; The first means, second means, and third means are processed in this order.

Furthermore, in addition to the above, the search method for map image data in the map information processing device of the present invention is such that, in addition to the above, the display means 3 adds a warning code near the location where the input place name is located. The method shall be as follows, and 1
The display by the display means 3 is such that the position where the input place name is located is scrolled so as to be in the center of the displayed image.

(Example) Next, the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention.

As shown in FIG. 1, a keyboard 2 and a display 3 are connected via an input/output interface 4 to a central processing unit (hereinafter referred to as OPU) 1 that controls the entire device.

A memory 5 is also connected, and the memory 5 stores control programs and various data.

Furthermore, an external memory 10 is connected to 0PUI.

It includes a place name index table 6, a map index table 7, and 8 ft of obituary and map image files.

FIG. 2 shows the control procedure by 0PUI, that is, the process of the search method of this embodiment.

Note that point A, which is circled in Figure 1, is connected to other points with the same symbol.

As shown in FIG. 2, once the process is started.

First, the user searches and inputs the name of a dangerous place using the keyboard 2 (step 1).

According to the program stored in the memory 5, 0PUI is
The place name index table 6 is read from the external memory 10 into the memory 5, and the place name data in the table is compared with the place name data input from the keyboard 2 (step 1).
2).

When it is determined that the comparison results 1 (in step 13) match, the coordinate data of the location of the corresponding place name in the place name index table 6 is read out (step 14). In addition,
This coordinate data is.

Geographic coordinates indicated by latitude, longitude, etc.

Next, the map index table 7 in the external memory 10 is read out to the memory 5, and data indicating the displayable range of the map image data in the table is read out.

Verify the coordinate data where the place name is located (step 15)
. What is the displayable range of map image data?

Latitude is the range of the screen displayed on Display 3.

This verification is extremely easy since it is indicated by geographical coordinates such as longitude.

If a place name is located within the displayable range of map image data (
(as determined by step 16).

Read the data of the storage location of the corresponding map image data from the map index table 7 (Step 17), and read the corresponding map image data from the map image file 8 into the memory 5 by referring to the data indicating the storage location (Step 1)
8). Then, the map image data read out to the memory 5 is output to the display 3 and displayed (step 19).

In addition, in addition to the normal display of 1 in the display at step 19, if necessary, an arrow or a symbol mark is added to the place name specified by the user on the displayed map image. Automatically scrolling the screen so that the location of the specified place name is in the center of the screen can be easily done because the input place name is matched to the geographical coordinates. can.

(Effects of the Invention) As explained above, the present invention indexes the next place name input by the user using a place name index table having geographical coordinate data, finds the coordinate data of its location, and includes the coordinate data. By indexing the displayable range using a map index table, finding the storage location of the relevant data, and reading out and displaying the map image data from the map image file by referring to the storage location, the user can simply input the place name. This is effective in that map image data of the area where the place name is located can be automatically and quickly displayed.

In addition, by attaching a mark to the position of the place name specified by input on the display screen to call attention to it, or by bringing a certain part of the specified place name to the center of the display screen,
This has the effect of making the display of map image data easier to see.

According to this embodiment, information search in map image data can be performed efficiently and accurately in a short time.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention. FIG. 2 is a flowchart showing the operation of the embodiment of FIG. 1... OPU 2... Keyboard 3... Display 4... Input/output interface 5... Mesori 6.
... Place name index table 7 ... Map index table 8 ... Map image file 10 ... External memory 1
) ~ 19...Steps of operation procedure

Claims (3)

[Claims] (1) It has a storage means for storing map image data as a file and a display means for displaying the map image, and the map image corresponding to the user's operation input is selected and read from the storage means and displayed on the display means. map image data from a map information processing device. In the search method, the device includes a place name index table having place names and geographical coordinate data where the place names are located, and a displayable range of map image data indicating the range to be displayed on the display means in geographical coordinates. A map index table including data indicating the storage location, and a storage means for storing a map image file including various map image data by region,
a first means for sequentially comparing place name data input by a user with place name data in the place name index table; and coordinate data where the place name of the input place name data is located when it is determined that there is a match as a result of the comparison; a second means for reading the coordinate data from the place name index table and sequentially comparing it with data indicating the displayable range of the map image data in the map index table; a third step that reads and displays map image data to be displayed from the map image file by reading data indicating a storage location of the corresponding map image data in the map index table when it is determined that the map image data is within the map index table; A method for searching map image data in a map information processing apparatus, which has means for searching map image data in a map information processing apparatus, which processes the first means, the second means, and the third means in this order. (2) A search method for map image data in a map information processing apparatus according to claim 1, wherein the display by the display means is a display with a code added to draw attention near the location where the input place name is located. . (3) A search method for map image data in a map information processing apparatus according to claim 1, wherein the display by the display means is a scrolled display so that the position where the input place name is located is in the center of the displayed image.