JPH02191068A - Design layer selection display system - Google Patents

Abstract

PURPOSE:To exactly select a desired layer by providing a means to table each layer information and to display the information on a display screen, a means to select the layer information in the table on this screen and a means to draw the wiring pattern of the layer corresponding to the layer information. CONSTITUTION:The display system is constituted with an input / output device 1, arithmetic processing unit 2, data storage device 3 and design layer selection mechanism 4. Especially, the design layer selection mechanism 4 is equipped with a means 5 to table the respective layer information such as the layer number of each layer in a printed circuit board and a wiring direction, and to display the information on the display screen, a means 6 to select the layer information of the desired layer in the table on this display screen, a means to emphasize and display a column for the layer information of this selected layer and a means 7 to draw the wiring pattern of the layer corresponding to these emphasized and displayed layer information. Thus, since the layer can be selected while confirming layer constitution information on the display screen, operability can be improved when interactive processing such as the addition and deletion of the pattern is executed.

Description

Detailed Description of the Invention The present invention relates to a design layer selection and display system, and more particularly to a design layer selection and display system for selecting a design layer of a wiring pattern to be drawn in designing an interactive pattern for a multilayer printed circuit board. Regarding.

Prior Art In conventional design layer selection and display systems of this type, an operator selects whether or not to display each layer number by specifying YES or NO, or a method is used in which a layer number is selected by a so-called mouse click operation. ing.

In this conventional method, when selecting a layer, the number of calendars specific to each printed circuit board, the X and Y wiring directions, the layer type such as the signal layer and the power layer, and whether the layer is a bare layer or a single layer are considered. It has the disadvantage of poor operability due to lack of configuration information.

Therefore, the present invention was made to solve the drawbacks of the conventional ones, and its purpose is to To provide a design layer selection and display system that can recognize a large amount of layer configuration information and accurately select a desired layer.

According to the present invention, there is provided a design layer display system for selectively displaying design layers when designing a multilayer printed circuit board, the layer number of each layer of the printed circuit board, the wiring direction one layer name, and the Means for converting each layer information such as eyebrows into a table and displaying it on a display screen, means for selecting layer information of a desired layer in the table on this display screen, and a field for layer information of the selected layer. A design layer selection and display system is obtained, which includes means for highlighting the layer information, and means for drawing a wiring pattern of a layer corresponding to the highlighted layer information.

X ships a week Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a system block diagram of an embodiment of the present invention.

As shown in the figure, the embodiment of the present invention includes an input/output device 1,
It consists of an arithmetic processing unit 2, a data storage device 3, and a design layer selection mechanism 4.

Although not particularly shown, the input/output device 1 includes a display device and a mouse as a pointing device.

The design layer selection mechanism 4 also includes a layer selection window display means 5.
, layer selection means 6, and wiring pattern redrawing means 7.

FIG. 2 is a flowchart showing the operation of the design layer selection mechanism 4 in FIG. 1, and FIG. 3 is a display example of a layer selection window displayed on the display screen of the display device for selecting a pattern design layer. be. The operation of the embodiment of the present invention will be described with reference to these figures.

First, layer configuration data is extracted from the wiring pattern data of the printed circuit board previously stored in the data storage device 3 by the input/output device 1 (step 21).

This layer configuration data is used to display a layer selection window (not shown in FIG. 3) on the display screen (step 22).The layer selection window shown in FIG. wiring processing)
In this case, processing is mainly performed on a pair layer basis, which is a pair of two layers. The two layers to be wired are called a pair layer. By specifying that the printed wiring direction for one of these two layers is in the X direction, and for the other layer in the Y direction (a direction perpendicular to the X direction), the wiring in each layer cannot cross each other. This improves ease of wiring and visibility of patterns. In addition, with special boards such as analog boards, the wiring direction within one layer may not be determined, and the power supply/ground layer, etc., are not wired but are painted solidly.

Since the wiring direction of Y is not determined, these layers are not treated as hair layers.

Therefore, in the window display example of FIG.

Y indicates the respective wiring direction, A indicates that the wiring direction is uncertain, and r -1 indicates that there is no pair layer. Moreover, "ne" indicates that there is no pair layer after the five layers.

Next, information about the mouse cursor position on the screen and whether the mouse has been clicked is constantly input (step 23).

The mouse clicked position is valid only within the layer selection window displayed above on the screen (Step 25), and if the mouse clicked position is within the layer definition frame indicated by 35 in FIG. 3 (Stella 126), The frame of that layer (the entire row) is highlighted (37 in Figure 3) (Step 27), and if the mouse click position is within the paired layer definition frame shown as 36 in Figure 3 (Step 26), the bare eyebrows The layer frame (the entire row) indicated by is highlighted (38 in FIG. 3) (step 28).

Furthermore, if the mouse click is on a layer that has already been selected and highlighted, the highlighting is canceled (step 29). In this case, the operation is performed when the operator wants to actively cancel the selected item.

The highlighted frame (row), that is, the number of layers that can be selected is up to two layers. If the mouse is clicked on multiple layers, only the latest two layers will be highlighted, and the layers clicked before ( (selected layer) will be unhighlighted one by one.

After completing the selection (step 24), extract the wiring pattern data of the highlighted layer (step 30), and at the same time erase the layer selection window from the screen (step 3).
1) The wiring pattern design data is redrawn on the window displaying the wiring pattern (step 32).

According to the present invention, it is possible to select a layer while checking the layer configuration information on the display screen, so it is possible to change the design layer of a wiring pattern and add, delete, modify, etc. This has the effect of improving operability when performing conversational processing.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an embodiment of the present invention, Fig. 2 is an operation flowchart of an embodiment of the invention, and Fig. 3 is a diagram displayed on the display screen for selecting a design layer of a wiring pattern by mouse operation. FIG. 6 is a diagram illustrating a display example of a layer selection window. Explanation of symbols of main parts

Claims (1)

[Claims] (1) A design layer display system that selectively displays design layers when designing a multilayer printed circuit board, which creates a table of layer information such as the layer number, wiring direction, layer name, and paired layer name for each layer of the printed circuit board. means for displaying on a display screen;
means for selecting the layer information of a desired layer in the table on the display screen; means for highlighting the layer information column for the selected layer; and means for highlighting the layer information column for the selected layer; A design layer selection display system comprising means for drawing a wiring pattern.