JPS6250892A - Image display unit - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an image display device, and particularly to a CAD
It is used as a graphic display device used in (Computer Aided Design) systems.

[Technical background of the invention]

CAD, which uses computers to create complex designs, is widely used. This connects a high-resolution graphic display device to a computer and memorizes all pixels on the display screen, making it possible to add, delete, move, etc., and simplify design.

An example of a case where such a design system using CAD is used for designing a printed circuit board will be explained.

In artwork design for a multilayer printed circuit board, design data is registered in levels as shown in FIG. In other words, level 1 is data 1 for through hole,
Level 2 is data 2 for the signal pattern on the component side (Surface II), level 3 is data 3 for the signal pattern on the solder material side (layer 11), level 4 is data 4 for the inner layer pattern of the ground, and level 5 is data for the power supply. Inner layer pattern data 5,
Level 6 is data 6 for solder resist pattern on the component side.
, level 7 corresponds to solder resist pattern data 7 on the solder material surface, and level 8 corresponds to silk screen data 8 for display, etc., and figures etc. are stored at predetermined addresses in the storage device for each of these levels. There is. Since a common standard pattern is often used for the inner layer and solder resist, the design target is usually from level 1 to level 3. For example, level 1 is a display altar, level 2 is a red display color, and level 3 is a red display color. is displayed as a display color line.

FIG. 3 shows how these three levels are displayed on the same screen. The grid 20 is an e2 quasi-grid through which through-holes 23 and wiring can pass, and the signal pattern 21 on the component surface and the solder material surface signal pattern 22
is superimposed on this, and you can proceed with the design by specifying the coordinates for each level.

In order to have such a function, conventional image display devices include a storage device that stores image information of each level in different areas, and a storage device that reads out the information in this storage device, synthesizes it, and displays it on a display device such as a CRT. It is equipped with a display device for displaying images, and a microcomputer or the like is used as the display control device.

(Problems with Background Art) However, such image display devices have a problem of poor operability.

That is, in the example shown in FIG. 3, two patterns 21
Since the corner portions of patterns 22 and 22 overlap at the bending point A, it is necessary to change the bending state of the pattern 22 so that it has the bending point B as shown in FIG. Colors with a high level of color, for example, level 2 red, are displayed strongly, making it difficult to confirm that they overlap. Also,
When changing from Figure 3 to Figure 4, (1) erase the level 2 display and only look at level 3 and make the change; (2)
Temporarily move the corner of level 2 in the overlapping part to avoid the overlap, and then make changes to level 3. (3
) Regardless of the difficulty of checking on the display, there are various methods such as selecting the coordinates where the corner on level 3 to be changed is thought to exist and changing the pattern.
All of these have difficulties in operability.

(Object of the Invention) The present invention was made to solve such problems, and an object of the present invention is to provide an image display device that improves the operability of graphic editing when image information of multiple levels overlaps. shall be.

[Summary of the invention]

In order to achieve the above object, the present invention provides a storage device having a plurality of areas for storing image information of multiple levels corresponding to addresses on a display screen, and a storage device that stores the addresses for each area of the image storage device. a shifting means for temporarily shifting the image information at each level, including the information being shifted, to update the stored contents of the image storage device, and to extract the stored contents from the image storage device to compose an image. The apparatus includes a display control means and a display configured by the display control means to display image information. As a result, image information at a specific level can be temporarily shifted, and in particular, changing of overlapping figures can be easily and reliably performed.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the image display device according to the present invention, including a display control device 11 that configures and outputs image information to a display device 13 such as a CRT, and a display control device 11 that configures and outputs image information to a display device 13 such as a CRT, and a display control device 11 that configures and outputs image information to a display device 13 such as a CRT; A plurality of areas 12a, 12b, . . . 1 are stored corresponding to addresses on the display screen so as to store
2n, and a keyboard 14 for giving commands to the display control device all. Here, the storage device 12 is a video RAM divided into areas,
As the display control device 11, a microcomputer is usually used.

Next, the structure of the image display device having such a structure will be explained using FIGS. 2 to 6.

Now, assume that the position of the grid point in the level 3 pattern 22 displayed as shown in FIG. 3 is to be moved.

First, from the keyboard 14, the level of the image to be shifted (
In this embodiment, level 3) is input (step 101).

As a result, the display control device @11 accesses the memory bag W112 and shifts the address value of the address area storing the image information of the corresponding level by one grid in the X direction and the Y direction as shown in FIG. Step 102).

In this state, the image is reconstructed and displayed (step 103).
), and as shown in FIG. 5, the pattern 22 in FIG.
and moves by +1 grid in the Y direction, and point A becomes the position of point A'.

This operation separates the overlapping portion of the two images, so pattern changes such as movement, addition, deletion, etc. are performed in this state (step 104). FIG. 6 shows this situation, in which point A' is moved by +2 grids in the X direction to become point B'.

Next, a shift reset command is input from the keyboard 14 (step 105). As a result, the image address of the level that has been shifted so far becomes the original value, and when the image is constructed and displayed (step 105) 106)
, the desired modified image as shown in FIG. 4 is obtained.

In the above embodiment, only the level 3 image is shifted, but images of level 2 or more may be shifted. In addition, the shift length is X in the example.
Although both the direction and the Y direction are set to +1, both may be set to -1, either the X direction or the Y direction may be shifted by ±1, or the shift may be made by an amount larger than that.

In order to make it clear that the image has been roughly and temporarily shifted, the corresponding pattern may be blinked at the time of the shift.

Further, in the embodiment, the storage device area is prepared so that the patterns of each level can be shifted, but it may be limited to only a specific level having a complicated pattern.

〔Effect of the invention〕

As described above, according to the present invention, a storage device that stores multiple levels of image information is accessed to temporarily shift the address of a portion storing images of a specific level, and changes, etc., are made during this shifting. Since display control means for editing is provided, even in images that overlap and are difficult to understand, the overlapping portion can be edited clearly with a simple operation, and the operability of graphic editing can be improved. This enables a significant reduction in design time.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an image display device according to the present invention, FIG. 2 is a flowchart showing its operation, and FIG.
6 through 6 are explanatory diagrams showing how a pattern is changed using the apparatus of the present invention, and FIG. 7 is an explanatory diagram showing the level of image information. 11...Display 1IIIl equipment 2.12...Storage device, 13...Display unit, 14...Keyboard. Applicant's agent Mr. Sato - Figure 2

Claims (1)

[Claims] 1. An image storage device having a plurality of areas for storing image information of multiple levels corresponding to addresses on a display screen, and requesting the address for each area of the image storage device. a shifting means for temporarily shifting the image information of each level, including the information being shifted, to update the storage contents of the image storage device, and to update the storage contents of the image storage device; An image display device comprising: a display control unit that extracts and configures an image; and a display that displays image information configured by the display control unit. 2. The image display device according to claim 1, wherein the shift means shifts one coordinate unit at a time in the X direction and the Y direction. 3. The image storage device according to claim 1, wherein the display control means includes a microcomputer.