JPH09288446A - Map display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the retrieval of maps even in between maps of different scales by making a fundamental map and a detailed map relate with each other and performing a switching display while automatically performing the drawing out of the detailed map from the fundamental map and the drawing out of the fundamental map from the detailed map. SOLUTION: A high speed memory 10 for making maps display on a display part 4 has four areas of a main screen display map data memory area 11, a main screen plotting memory area 12, a small screed display map data memory area 13 and a small screen plotting memory area 14. For example, a detailed map is displayed on a small screen. At first, an inputting for retrieving a map to be displayed is performed from an input device 1. Then, processing parts 5, 6, 7, 8 work in accordance with the inputting and read out a pertinent map from the external memory 3 to plot it to the high speed memory 1O. Moreover, a processing part 9 for a display works to perform the display on the display part 4. Further, the part 9 performs the switching display from the fundamental map to the detailed map and from the detailed map to the fundamental map by making the fundamental map and the detailed map relate with each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a map display device for displaying parents and children on a facility in association with each other.

[0002]

2. Description of the Related Art Electronic maps include vector maps and image maps. Vector maps are used for residential maps and water pipe maps, and image maps are used for prefecture maps and municipal maps. These maps are stored in the map database and can be displayed on the screen by the user searching.

[0003]

Some maps have different scales. For example, 1 on a scale of 50,000
No. A town map and 100 scale of B chome which is a part of A town
This is an example called a 1/00 map. In this case, the display of the map of A town and the map of B town of A town are handled separately, and there is no way to associate the two in terms of data.

It is an object of the present invention to provide a map display device which facilitates the search of a map by associating it with data even if the maps have different scales.

[0005]

According to the present invention, in a map display device for displaying a map converted into data, a correspondence relationship between a basic diagram and a detailed diagram on the map is held as a table,
A map display device is disclosed in which a detailed drawing corresponding to a basic drawing is drawn from this table and displayed.

Further, in the present invention, in a map display device for displaying a tabulated map, a correspondence relationship between a basic map on a map and a detailed map is held as a table, and a basic map corresponding to the detailed map is created from the table. A map display device for pulling out and displaying is disclosed.

Further, the present invention discloses a map display device in which the above basic diagram is displayed on the map on the display screen and in the center.

The present invention further discloses a map display device in which the basic diagram is displayed on the main screen and the detailed diagram is displayed on the small screen.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing an embodiment of a map display device of the present invention. In this map display device, a basic drawing and a detailed drawing are associated with each other, and a detailed drawing is pulled out from the basic drawing and a basic drawing is pulled out from the detailed drawing, respectively, to perform switching display. Here, the basic diagram and the detailed diagram will be briefly described below. Some housing maps include detailed information by enlarging only a certain area within the map, such as a condominium housing map, to another page. At this time, the enlarged map is called a detailed view, and the base small scale map is called a basic map. The detailed drawing describes all of one page (there is also an example of multiple pages), and is different from a cut drawing displayed with a frame in a part of the page or a separate drawing at the end of a map book with an incorrect scale.

This apparatus comprises an input device 1, an arithmetic processing device 2,
It is composed of an external storage device 3 and a display unit 4. The input device 1 is an input means including a keyboard and a mouse. The arithmetic processing unit 2 has the following configuration. Dialog control processing unit 5 ... A device that realizes man-machine communication using the input device 1 and the display unit 4. Map search processing unit 6 ... A map in the external storage device 3
This is a device for searching and reading from the entered key. Display map switching processing unit 7 ... Switching between a basic diagram and a detailed diagram which are to be displayed and which are related to each other. Map drawing processing unit 8: Performs a process of drawing map data from the map database 3 in the high speed memory 10 which is a drawing area. Basic display processing unit 9: a device for sending a map and other data in the high-speed memory 10 which is a drawing area to the display unit 4 for display.

High-speed memory 10 ... A memory for displaying on the display unit 4, which is a so-called drawing area. The storage capacity of the high-speed memory 10 is several to several tens of times larger than the display size in the display unit 4. The high speed memory 10 further has the following four areas (a) to (d). (A), main screen display map data memory area 11 ... Stores map data to be displayed on the main screen. (B) Main screen drawing memory area 12 ... Drawing display data to be displayed on the main screen which is a part of the display unit 4. (C), small screen display map data memory area 13 ... Stores map data to be displayed on a small screen which is a part of the display unit 4. (D) Small screen drawing memory area 14: Drawing display data to be displayed on the small screen. For example, a detailed view is displayed on this small screen.

The display unit 4 comprises a CRT display means having at least two screens, a main screen and a small screen, but it may be another display means such as a liquid crystal display. Here, the main screen and the small screen follow a division method in which a central screen area is a main screen and a peripheral screen is a small screen on one screen. Of course, there is also a method of dividing the large CRT into the main screen and the small CRT into the small screen by having two large and small CRTs. The external storage device 3 is a large-capacity memory called a so-called map database and has a map data section 15.

The overall operation will be briefly described. The input device 1 is used to search for a map to be displayed. In accordance with this, the processing units 5, 6, 7, and 8 operate to read the corresponding map from the external storage device 3 and draw it in the high-speed memory 10. Further, the processing unit 9 for displaying operates to display on the display unit 4. Further, by associating the basic diagram with the detailed diagram, switching display from the basic diagram to the detailed diagram and from the detailed diagram to the basic diagram is performed.

FIG. 2 shows a processing flow of the map search processing unit 6. In the flow F _{1 of} FIG. 2, the image map book database is searched by using the map type and the map book number as keys, and the image map book of the mesh range is extracted. here,
The image map database is shown in FIG. FIG.
In (a), the mesh range and the map drawing size are stored using the map type and map book number as keys. Mesh range ... Origin coordinates X, Y indicating the origin of the mesh Width distance D _x , D _y indicating the width of the mesh Number of mesh divisions m, n Map drawing size ... Horizontal size, vertical size Note that the mesh is a map that has been converted into data. Indicates the classification on the data. If you manage a vast area with a single map, you will not be able to display it in a short time because of the large amount of information. Moreover, since the range displayed on the screen is limited to one part, it is necessary to extremely reduce the part outside the display range when searching. For this reason, by dividing the map data by a mesh called a mesh, the search range can be finely divided, and the positional relationship for displaying the adjacent map can be easily expressed like the position of a piece on the shogi board. It will be possible. One mesh may be as large as one screen, may be smaller, or may be larger.

The flow F ₂ searches the image group database using the map type and map book number as keys,
The image group of the mesh range is extracted. Here, the image group database is shown in FIG. FIG. 3B stores the mesh range, absolute coordinates, and tilt angle using the map type, map book number, and group number as keys. Mesh range ... Mesh coordinates X, Y at upper left point Mesh coordinates X, Y at lower right point Absolute coordinates ... Upper left point X, Y Further, FIG. 4 shows group numbers. The electronic map used in the present invention is an image map, and the image map book is shown in FIG.
As shown in FIG. ₁ , first, the image groups G ₁ , ..., G _m are divided. In the figure, one image group G ₁ is further divided into a plurality of image maps P ₁ , ..., P _n , and the image data I _{1 to} I _n are associated with each other. The m-th image group G _m has an image map Q and image data L.

A specific example of FIG. 4 will be described. Image atlas (A): Refers to the classification of residential atlas and road atlas determined by region. Image group (G _{1 to} G _m ) ... The image atlas is divided into groups according to, for example, different scales. For example, if there are five types of residential atlases in area a, such as scale 1 / 50,000, scale 25,000, scale 1/10, scale 1/5000, scale 1/1000, m-
5 and becomes _five groups G _{1 to} G ₅ . Image map (P _{1 to} P _n , Q) ... Image group G ₁
The map book pages in the above are P _{1 to} P _n . This indicates that there are n pages. The m-th group Q _m shows the existence of only one page. Image data _{(I 1 ~I n, L)} ... This is the page P ₁
The specific image maps of _Pn and Q are shown.

The flow F ₃ of FIG. 2 searches the image map database using the map type, map book number, and group number as keys, and stores the image map data of the mesh range in the main screen display map data memory of FIG. Extract to area 11. Here, the image map database is shown in FIG.
(A). FIG. 5A stores a mesh range, a relational map division, and a relational map, using the map type, map book number, group number, page number, image file name, and scale as keys. Mesh range ... Upper left point X, Y Lower right point X, Y Relational map classification ... Any one of "0", "1", and "2" is set. "2" means that the image map is a detailed drawing, "1" means that the image map is a basic drawing,
"0" means that neither map exists. Relationship map ... Specify the contents of the related map. That is, related map types, map book numbers, group numbers, and page numbers are set.

The flow F ₄ checks whether or not there is a relational map by referring to the contents of FIG. 5A read from the image map database. Flow F if there is a relation map
_5. If not, move to flow F ₆ .

Here, the relation map will be described. For example, in a general residential map, there is a housing complex in part of it. However, the layout of the buildings in the housing complex is often not displayed on the residential map, and the layout of the housing in the housing complex is listed as a separate map. The same applies to a data map, and there are a general residential map and another map showing the details thereof. Therefore, such general residential maps and maps that are considered to be the same destination are related to each other in terms of data as relational maps, and if one is specified, the other related map is automatically specified and read. I want to be able to put it out. The relationship between the maps is shown in FIG.
(A) S and T. T is a relational map with respect to the map S, and the “relationship map division” in T indicates the type of the relational map that is a partner. If the relation map classification = "0", T
There is no data in the "relationship map" area in. If the relational map classification is “1”, the basic diagram exists in the “relational map” region at T, and if it is “2”, the detailed diagram exists. For example, S is a map of a house in the area a, and T is a diagram showing a building of the housing complex b in the map. The map of S and T is arbitrary, and S is a diagram showing a building of the housing complex, and T is the reverse map such as a map of a house to which the housing complex belongs.

The presence or absence of the relational map is checked in the flow F ₄ by referring to the relational map classification shown in FIG. 5 (a). If it is "2", T is a detailed map, if it is "1", T is a basic map (that is, for example, a general house map), and if it is "0", it is determined that there is no relation map. Looking at this in the flow F ₄ , when the division is “0”, the flow shifts to the flow F ₆ , and the division is “1” or “2”.
Then, the flow shifts to F ₅ .

Flow F ₅ is for map type, map book number,
Using the group number and page number as keys, the related image map data determined in FIG. 5A is extracted to the small screen display map data memory area 13 (FIG. 1). Flow F ₆ is
No small screen display map data.

FIG. 5B shows the image data in the image file. This image data is shown in Figure 5.
It is designated by the image file name in S of (a), and means, for example, a general residential map itself of a map.

FIG. 6 shows a processing flowchart of the map drawing processing section 8 of FIG. Flow F ₇ reads the main screen display map data from the image file shown in FIG. 5B and displays it on the main screen. Flow F ₈ checks whether or not there is a small screen display map, and if there is, it moves to flow F ₉ to generate a small screen. If not, the process ends. Flow F ₁₀ is
Small screen display Map data is read from the image file of FIG. 5B and displayed on the small screen. The flows F _{8 to} F ₁₀ correspond to a part of the flow F _{4 in} FIG. 2 and the flow F ₅ .

FIG. 7 shows a processing flowchart of the display map switching processing section 7 of FIG. Flow F ₁₁ checks whether or not the main screen display map data has a relation map (FIG. 5A). If there is, the flow moves to F ₁₂ to store the main screen display map data in the small screen display map data memory area 13 (FIG. 1). If, move to the flow F _13, and non-small screen display map. The flow F ₁₄ searches the image map by using the type of the related map, the map book number, the group number, and the page number as keys, and displays the main screen display map data memory area 11
(FIG. 1).

FIG. 8 shows a display map example of a basic diagram and a detailed diagram. It is a residential map of a district with the basic map of Fig. 8 (a), and it is shown that "Heisei housing complex" exists in a part of it. The detailed diagram of FIG. 8 (b) is the layout relationship diagram of the buildings of the "Heisei housing complex".

FIG. 9 shows an example in which the basic diagram and the detailed diagram of FIG. 8 are displayed together on one screen. The screen displaying the basic diagram is the main screen, and a part of the screen on the lower right side is the small screen, and the detailed diagram was displayed on this small screen.

[0027]

According to the present invention, the basic diagram and the detailed diagram can be switched to be displayed on the main screen, and the basic diagram and the detailed diagram can be simultaneously displayed on the main screen and the small screen. It became easier.

[Brief description of drawings]

FIG. 1 shows an embodiment of a map display device of the present invention.

FIG. 2 is a flowchart of a map search processing unit.

FIG. 3 is a diagram showing an image map data structure.

FIG. 4 is a diagram showing a classification format of image map data.

FIG. 5 is a diagram showing an image map data structure.

FIG. 6 is a flowchart of a map drawing processing unit.

FIG. 7 is a flowchart of a display map switching processing unit.

FIG. 8 is a display example diagram of a basic diagram and a detailed diagram.

FIG. 9 is a diagram showing a basic diagram on a main screen and a detailed diagram on a small screen.

[Explanation of symbols]

 1 input device 2 arithmetic processing device 3 external storage device 4 display unit

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Kazuyuki Chine 3-2-1, Sachimachi, Hitachi City, Ibaraki Prefecture Inside Hitachi Engineering Co., Ltd.

Claims (4)

[Claims] 1. A map display device for displaying a dataized map is provided with a correspondence relationship between a basic map on a map and a detailed map as a table, and a detailed map corresponding to the basic map is drawn from this table. A map display device designed to be displayed. 2. A map display device for displaying a tabulated map, which has a correspondence relationship between a basic map on a map and a detailed map as a table, and a basic map corresponding to the detailed map is drawn from the table and displayed. A map display device designed to do. 3. The map display device according to claim 1, wherein the basic diagram is displayed on the map on the display screen and in the center. 4. The map display device according to claim 1, wherein the basic diagram is displayed on a main screen and the detailed diagram is displayed on a small screen.