JPH08202750A - Printed circuit board designing device - Google Patents

Abstract

PURPOSE: To easily perform the confirmation or design of a wiring path by simultaneously displaying the respective layers of a printed circuit board so that those layers can not be overlapped. CONSTITUTION: A left window displays only the state of a front layer, a right window displays only the state of a rear layer, and these windows are displayed so as not to be mutually overlapped. The position of the left window can be arbitrarily decided by a designer but in order to grasp the mutual position relation, it is desirable to longitudinally or laterally arrange them while putting them in order. A display 40 shows the position of a displayed printed circuit board to perform an operation such as wiring. A display 41 has the similar meaning as well but which layer can be operated by the designer can be judged. The positions of the display 40 and 41 can be instructed by the designer while using a position input device called mouse and the same position of the printed circuit board can be shown at all times.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board designing apparatus, in which printed wiring boards can be easily checked and designed by displaying respective layers of the printed circuit board so that they do not overlap at the same time. Regarding design equipment.

[0002]

2. Description of the Related Art In the prior art, when displaying the wirings of a plurality of layers of printed circuit boards on a display device of a printed circuit board designing device, the printed circuit boards are displayed as if they were seen through from the vertical direction.

FIG. 1A shows a direction in which a printed circuit board is seen through.

FIG. 1B is a display example of the display device.
Reference numeral 1 is a component mounting hole, 2 is a hole for connecting wirings on the front and back layers of the printed circuit board, 3 is wiring on the front layer, and 4 is wiring on the back layer.

In FIG. 1B, the wiring in the front layer is shown by a solid line and the wiring in the back layer is shown by a broken line. However, when displaying on an actual display device, the display color is changed to distinguish and display. In many cases Although FIG. 1 shows an example of two layers, the current printed circuit board is manufactured to have four layers, six layers, and more layers, and the wiring design uses more layers to display the wiring. Color-coded display is used.
The operator who operates the printed circuit board design apparatus recognizes the layer based on the difference in the display color, searches for a wirable area, and designs the wiring.

[0006]

In the prior art, as shown in FIG.
A display example in the case where the thick wiring 10 is provided on the surface layer as shown in FIG. In this case, is the back layer as shown in FIG.
It cannot be judged as it is, as in FIG. 2 (c).

Here, as shown in FIG. 3A, it is assumed that the wiring design must be performed from the wiring request start point 11 to the wiring request end point 12. From the display state of FIG. 3A, it can be determined that the thick wiring 10 has already been wired in the front layer, and the wiring cannot be performed from the wiring request start point 11 to the wiring request 12 in the front layer. Therefore, it is necessary to investigate the possibility of wiring design in the back layer.

When the back layer is in the state as shown in FIG. 3 (b),
The wiring request start point 11 and the wiring request end point 12 can complete the wiring as shown in FIG. The back layer is shown in Figure 3 (d).
In such a state, the wiring request start point 11 and the wiring request end point 12 are as shown in FIG. 3E, and the wiring cannot be completed.

As a method of knowing the state of the back layer, there are a method of turning off the display of the front layer and displaying only the back layer, and a method of changing the display priority of the front layer and the back layer.

In this case, it is necessary to delete the layer display and change the priority display layer, which hinders the thinking of the wiring route.

An object of the present invention is to provide a method by which a printed circuit board designer can immediately grasp the state of layers required for wiring design and prevent an increase in operations and an obstacle to thinking. .

[0012]

In order to achieve the above object, the present invention provides a printed circuit board design apparatus for displaying the state of an arbitrary layer of a printed circuit board so as not to overlap with other layers.

[0013]

According to the present invention, by displaying an arbitrary layer of the printed circuit board so as not to overlap with other layers, the layer state required by the designer for wiring design is switched between display states. It can be obtained without any action, and it is possible to prevent an increase in operations and an obstacle to thinking.

[0014]

FIG. 4 shows an example of display on a display device of a printed circuit board designing device according to the present invention. The left window shows only the state of the front layer, and the right window shows only the state of the back layer. They are displayed so that they do not overlap each other. Although the position of the left window can be arbitrarily determined by the designer, it is desirable to arrange the left window vertically or horizontally in order to grasp the relationship of the positions of each other.

Reference numeral 40 is a display indicating which position of the printed circuit board on which the wiring operation is to be performed. 41 also has the same meaning as 40, but by displaying the main layer at present with a solid line and displaying the other layers with a broken line, it is possible to determine which layer the designer can operate. . The positions 40 and 41 can be designated by the designer by a position input device called a mouse, and always indicate the same position on the printed circuit board.

FIG. 5 shows a state in which the mouse has been moved slightly to the right from FIG. 40 and 41 are moving to the right. FIG. 6 shows a state where the mouse is moved further to the right from FIG. 40
Is changed to a wiring display, and 41 is a solid line display. This is because when the area of the left window is exceeded, it is controlled so that the right window displayed in the direction beyond the area becomes a new main layer. By this control method, without controlling by the main command conventionally,
Can be transferred.

Next, the procedure for processing the wiring request will be described. FIG. 7 shows a state where there is a wiring request.

FIG. 7 shows a wiring request start point 70 and a wiring request end point 7.
It means that 1 must be wired. 70 and 7
A rubber band 72 is displayed between 1 for easy understanding of the direction of the wiring request.

To specify the start of wiring, click the mouse 7 as shown in FIG.
It is done by pressing the mouse button at 0.

In the layer of FIG. 8A, thick wiring is formed in the direction of the required wiring end point 71, and it can be seen that the wiring cannot be completed in the layer of FIG. 8A. When the layer (b) is examined next, it is understood that there is no obstacle wiring between the wiring request start point 70 and the wiring request end point 71 in the layer (b), and the wiring can be completed in the layer (b). Holes must be created to connect the wiring from the current layer (a) to layer (b). Then, press the mouse button at the current mouse position. As shown in Figure 9, holes are generated,
The main layer moves to (b).

Next, as shown in FIG. 10, the mouse is moved in the wiring direction. In the case of FIG. 10, there is no wiring which is an obstacle to the wiring from the place where the hole is generated to the wiring request end point 71, and since it is possible to perform wiring with two line segments between them, as shown in FIG. Wiring is done and wiring is completed. Further, the display of the rubber band 72 disappears when the wiring is completed.

[0022]

According to the present invention, arbitrary layers are displayed so that they do not overlap at the same time, and switching of the main layers is controlled by the display area, so that the wiring route can be easily recognized and designed. You can

[Brief description of drawings]

FIG. 1 is an explanatory view showing a conventional technique.

FIG. 2 is an explanatory diagram showing a problem to be solved by the invention.

FIG. 3 is an explanatory diagram showing a case in which there is a wiring request, which is a problem to be solved by the invention.

FIG. 4 is an explanatory view showing an embodiment of the present invention.

FIG. 5 is an explanatory view showing an embodiment of the present invention.

FIG. 6 is an explanatory view showing an embodiment of the present invention.

FIG. 7 is an explanatory diagram showing a case where a wiring request is made in the embodiment of the present invention.

FIG. 8 is an explanatory diagram showing the start of wiring request processing according to the embodiment of this invention.

FIG. 9 is an explanatory view showing the generation of holes in the embodiment of the present invention.

FIG. 10 is an explanatory diagram in which the mouse is moved to the wiring request end point in the embodiment of the present invention.

FIG. 11 is an explanatory view showing the completion of wiring in the embodiment of the invention.

[Explanation of symbols]

1: Component mounting holes, 2: Connection holes for wiring on the front and back of the printed circuit board, 3: Front layer wiring, 4: Back layer wiring, 10:
Thick wiring on the front layer, 11: wiring request start point, 12: wiring request end point, 40: front layer position display, 41: back layer position display, 70: wiring request start point, 71: wiring request end point, 7
2: Display indicating the direction of wiring request.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masaya Kashihara 7-1, 1-1 Higashi Narashino, Narashino City, Chiba Prefecture Hitachi Keiyo Engineering Co., Ltd.

Claims (3)

[Claims] 1. A printed circuit board designing apparatus having a function of displaying an arbitrary layer so as not to overlap at the same time in the printed circuit board designing apparatus. 2. The printed circuit board design apparatus according to claim 1, wherein the layer switching operation is controlled by controlling the layer switching by the position of the position pointing device. 3. The printed circuit board design device according to claim 2, wherein the display function is a display viewed through a vertical direction and the display can be performed simultaneously.