JPH0561405A - In-figure name display device - Google Patents

Abstract

PURPOSE:To easily read the names of respective parts in a figure without reference to a scale by displaying the character strings of the names to constant size without reference to the display scale, CONSTITUTION:Name data are handled separately from figure data and a name data storage means is stored with the character strings of the names of the respective parts in the figure, the display positions of the character strings, and conditions indicating whether the names are displayed on the display scale or not, name by name. Then a figure data processing means writes the figure data on a display memory on the set scale and then the figure is displayed on the set scale. A name data processing means, on the other hand, reads the names to be displayed on the set scale out of the name data storage means and writes them on the display memory and thus only the names matching the scale of the figure display are displayed at the respective positions in the figure. Change specifying operation for the display positions of the names are read and the display position data are altered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a name display device for displaying names of respective parts in maps, system diagrams and the like.

[0002]

2. Description of the Related Art A device for displaying a map or a system diagram on a screen is used, for example, as an information providing device. In the drawings such as maps and system diagrams, each part includes characters representing names such as place names. When displaying a graphic including such a name on a display device such as a CRT, all information is conventionally treated as graphic data (graphics data). Therefore, graphics characters are also used in character strings representing the names of the parts in the figure.

[0003]

As described above, since all display information is conventionally treated as graphic data,
Easy to reduce. However, the larger the scale ratio (the larger the value of N when the scale ratio is represented by 1 / N) is, the smaller the characters representing the names of the points in the figure are displayed, and the more difficult it is to read. FIGS. 8A and 8B are examples in which the same place on the map is displayed at different display scale rates. If the scale is small as shown in (A) (when enlarged), the names of the parts on the map can be easily read, but as shown in (B), the scale is large (when reduced). Then, the name of each part in the map is displayed in small size, which makes it difficult to read.

It is an object of the present invention to provide a name display device in the figure in which a character string representing the name of each part in the figure can be easily read regardless of the scale.

Another object of the present invention is to provide a name display device in the figure in which only the necessary name can be displayed at a predetermined position by the operation of the operator.

[0006]

According to a first aspect of the present invention, there is provided a name display device for displaying a character string representing the name of each part in the figure, display position data of the name in the figure, and a display scale factor. A name data storage means for storing the display permission / prohibition condition of each name corresponding to each name, a means for storing graphic data, a means for reading a scale ratio setting operation input from the outside, and a scale ratio set. It comprises graphic data processing means for writing the graphic data in the display memory, and name data processing means for reading the name to be displayed under the set scale from the name data storage means and writing it in the display memory. ..

Further, a name display device according to a second aspect of the present invention is a character string representing a name of each part in the figure, display position data of the name in the figure, and whether or not the name can be displayed according to a display scale factor. Name data storage means for storing conditions for each name, means for storing graphic data, means for reading a scale ratio setting operation input from the outside, and memory for displaying the graphic data at the set scale ratio. , A graphic data processing means to be written into the memory, a name data processing means for reading out a name to be displayed under a set scale from the name data storage means, and a means for reading the name display position change designation operation in the display memory. A means for changing the display position data in response to a change designation operation of the name display position, and a name to be displayed or deleted from a plurality of names displayed on the screen. Means for reading the designation operation of the feeder name, made by a means for changing the display permission condition in accordance with the designation operation of the name.

[0008]

In the drawing name display device according to the first aspect, the name data is basically treated separately from the graphic data. The name data storage means, for each name, a character string representing the name of each part in the figure, and the condition of whether or not to display the name according to the display position data and the display scale factor of the character string in the figure. Remember. The graphic data processing means writes the graphic data in the display memory at the set scale. As a result, the graphic is displayed at the set scale. On the other hand, the name data processing means reads the name to be displayed under the set scale from the name data storage means and writes it in the display memory. As a result, only the name suitable for the scale of graphic display is displayed in each part in the figure. In this way, by displaying the character string representing the name in a fixed size regardless of the display scale,
You can always read the name of each part in the figure. Moreover,
For example, by setting the display permission / prohibition condition so that only the main names are displayed at the time of reduction, the character strings representing the names do not overlap each other, and the names in the drawing can be easily read.

In the name display device in the second aspect of the invention, in addition to the constituent features of the first aspect, a change designation operation of the display position of the name is read and the display position data is changed.
In addition, the designation operation of the name to be displayed or the name to be deleted is read from the multiple names displayed on the screen,
The display availability condition is changed. With this configuration, the names to be displayed in the drawing can be organized, and the display position of each name can be changed to a location that is easy to see. By performing this operation for each scale, for example, the optimum name display can be performed for each scale.

[0010]

FIG. 4 shows a block diagram of a map display device according to an embodiment of the present invention. In FIG. 4, CPU1 is ROM2
The program previously written in is executed to perform various processes described later. The RAM 3 is used as a working area when executing the program. Reference numeral 5 is a floppy disk drive device, and 4 is an interface circuit thereof, and the CPU 1 reads graphic data and name data previously written in the floppy disk. The keyboard 7 is an input device for instructing processing such as enlargement, reduction, and movement, and the CPU 1 reads the key operation content via the interface 6. The mouse 9 is used when designating the name displayed in the drawing, and the CPU 1 reads the movement of the mouse and the switch operation provided on the mouse via the interface 8. The character display RAM 11 is a memory that stores the characters to be displayed on the screen in the character code. The character display control circuit 10 sequentially reads the contents of the character display RAM 11 and outputs them to the character generator 12. The graphics RAM 14 is a memory for storing display data of a graphic to be displayed on the screen in a bit pattern. The graphics display control circuit 13 specifies the read address of the graphics RAM 14. The video output circuit 15 synthesizes the output signal of the graphics RAM 14 and the output signal of the character generator 12, converts the video signal into a video signal, and outputs the video signal to the CRT 16. next,
An example of name data written in the floppy disk is shown in FIG. In FIG. 5, “display condition” is data indicating a name to be displayed in the reduction mode. If the display condition data is 1, the name is displayed in any of the enlargement / reduction modes, and if the display condition data is 0, the enlargement mode is displayed. Display the name only in. “Absolute display position” is data indicating the absolute display position of the name on the map, and is represented by rectangular coordinates in the enlargement mode and the reduction mode. For example x ₀₀ , y
₀₀ is the position on the map where the name "○○ police" should be displayed in the reduced mode, and x ₀₁ and y ₀₁ are "○○ in the enlarged mode.
Indicates the position on the map where "police" should be displayed.

"Horizontal writing / vertical writing" is data indicating whether the character string is displayed horizontally or vertically. When the data is 1, it is displayed horizontally and when it is 0, it is displayed vertically.
“Number of characters” is data indicating the number of characters in the character string representing the name. The “character string” is a character string representing a name, and is composed of, for example, a character code (Kanji code) string.

Next, the processing procedure of the CPU is shown as a flow chart in FIGS. As shown in FIG. 6, the CPU first reads a key and, if there is any key operation, performs a process corresponding to the key. For example, if the enlarge key is operated, the display mode is changed to the enlarge mode (n0 → n1).
→ n2 → n3). Subsequently, the graphic data is read out, display data is created at a reduction scale according to the enlargement mode, and written in the graphics RAM (14 in FIG. 4) (n4). Also,
The name data (see FIG. 5) is read out and the character code is displayed in the character display RAM (1 in FIG. 4) so that the name to be displayed in the enlarged mode is displayed at each display position.
Write to 1) (n5). As a result, for example, as shown in FIG. 1, the name is displayed together with the map.

When the move key is operated, the position on the map corresponding to the center of the screen is changed and the display range of the map is moved in parallel in the designated direction (n8 → n9 → n4 → n5).

When the reduction key is operated, the reduction mode is set (n6 → n7). Next, read the graphic data, create display data at a scale according to the reduction mode,
Write to graphics RAM. Further, the name data is read out and the character code is written in the character display RAM so that the name to be displayed in the reduced mode is displayed at each display position (n4 → n5).

However, in the reduction mode, as shown in FIG. 2, for example, if the names of the respective parts are displayed at the display positions set in the enlargement mode, the names overlap with other figures and are difficult to see. So, in this reduction mode, move the arrow cursor to the position of the name to move,
When the mouse switch is turned on, the arrow cursor changes to a frame cursor, and when the mouse is moved while the switch is on, the name can be moved to a predetermined position together with the frame cursor. If the switch is turned off in the state where the name has moved to the predetermined position, the name will be displayed at that position in the reduction mode thereafter. FIG. 2 shows an example of moving the frame cursor. As a result, in the reduced mode, as shown in FIG. 3, the names of the respective parts on the map are displayed without overlapping with other displays. This function is fulfilled by the processing described below with reference to FIG.

As shown in FIG. 7, first, a mouse and a switch operation of the mouse are read, and a process corresponding to the operation content is performed. If the mouse is moved with the switch off, the display position of the arrow cursor is moved accordingly (n12
→ n13 → n14 → (n16 →) n15). When the switch is turned on in the enlargement mode, it is determined whether or not the arrow cursor at that time is within the name display range (n13).
→ n17 → n18).

If the cursor is within the name display range, data relating to the name is retrieved from the name data and the "display condition" data is set to "0". That is, the display is changed only in the enlarged mode (n19 → n20). If the switch is turned on in the reduction mode, the state of the flag F is first determined (n13 → n17 → n21). The flag F stores that the switch is once turned on with the arrow cursor at the name display position in the reduction mode. If the flag F is in the reset state,
It is determined whether or not the arrow cursor is within the name display range (n21 → n22). If it is within the name display range, data corresponding to the name is searched from the name data, and the name display range is displayed with a frame-shaped cursor (n22 → n23).
→ n24). Then, the flag F is set (n2
5). If the mouse is moved while the switch is on, the display position of the name is moved together with the frame cursor (n21
→ n26). After that, if the switch is turned off, the display position data (“absolute display position”) of the name moved together with the frame cursor is changed to the display position when the switch is turned off (n13 → n14 → n16 → n27). .. After that, the flag F is reset to return to the normal state (n2
8).

In the embodiment, there are two kinds of scale factors, that is, the enlargement mode and the reduction mode. However, the scale factors can be switched in multiple stages, and which scale factor should be displayed is set as a display condition. May be. Further, in the embodiment, the name which is not displayed in the reduction mode is selected in the enlargement mode, but in each mode, the name which should be prohibited or should be displayed in that mode may be selected. Furthermore, in the embodiment, the mouse is used to specify the name in the map.
Other pointing devices such as a tablet (digitizer) light pen may be used.

[0019]

According to the drawing name display device of claim 1 of the present invention, the character strings representing the names of the respective parts in the drawing can be displayed in the same size regardless of the display scale of the figure. The names of the main parts in the figure can be read even during reduction.

Further, according to the in-drawing name display device of the second aspect, it is possible to set the display permission / prohibition condition of the name according to the display scale ratio, and also the display position of the name can be set. According to the above, the names of the respective parts in the drawing can be set to be most legible.

[Brief description of drawings]

FIG. 1 is a diagram showing a map display example in an enlargement mode according to an embodiment of the present invention.

FIG. 2 is a diagram showing how the name display position is changed in the reduction mode.

FIG. 3 is a diagram showing a map display example in a reduction mode.

FIG. 4 is a block diagram of a map display device according to an embodiment.

FIG. 5 is a diagram showing an example of name data written on a floppy disk.

FIG. 6 is a flowchart showing a processing procedure of a CPU.

FIG. 7 is a flowchart showing a processing procedure of a CPU.

FIG. 8 is a diagram showing a display example of a conventional map display device.

Claims (2)

[Claims] 1. A name data storage means for storing, for each name, a character string representing the name of each part in the drawing, display position data of the name in the drawing, and a display enable / disable condition of the name according to a display scale ratio. A means for storing the graphic data, a means for reading a scale setting operation input from the outside, a graphic data processing means for writing the graphic data in the display memory at the set scale, and a set scale. A name display device in the drawing, comprising name data processing means for reading out a name to be displayed under the ratio from the name data storage means and writing it in the display memory. 2. A name data storage means for storing, for each name, a character string representing the name of each part in the drawing, display position data of the name in the drawing, and a display enable / disable condition of the name according to a display scale ratio. A means for storing the graphic data, a means for reading a scale setting operation input from the outside, a graphic data processing means for writing the graphic data in the display memory at the set scale, and a set scale. A name data processing means for reading out the name to be displayed under the ratio from the name data storage means and writing it in the display memory, a means for reading the change designation operation of the name display position, and a change designation operation for the name display position. A means for changing the display position data, a means for reading a designation operation of a name to be displayed or a name to be erased among a plurality of names displayed on the screen, A name display device in the figure, comprising means for changing the display permission / prohibition condition in accordance with the name designation operation.