JP2950245B2 - Graphic data conversion method in CAD device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a graphic data conversion method in a CAD (computer-aided design) apparatus, and in particular, in a layout / wiring design of a printed wiring board or the like, moves graphic data to another layer in layer units. CA that performs conversion such as
The present invention relates to a graphic data conversion method in a D device.

[0002]

2. Description of the Related Art As a conventional graphic information correction method of this kind, for example, Japanese Unexamined Patent Publication No. 3-47471 discloses a method of externally inputting the attributes and positions of graphic information once design is completed and registered. By correcting with information, it is possible to move a land or the like, which is a mounting component mounting portion, to a layer or position having a desired attribute while retaining information such as wiring information, thereby improving design work efficiency. A graphic information correction method has been proposed.

The processing of this conventional graphic information correction method will be described with reference to a data structure shown in FIG. 8 and a flowchart shown in FIG.

In a printed circuit board design apparatus, layers are allocated for each attribute of data constituting the board such as a board outer shape, a wiring pattern, a land, a through hole, a cover, and the like.

[0005] The data structure shown in FIG. 8 is one in which each layer is provided on both sides of the flexible substrate.
Land layer 13, wiring pattern layer 1
2, the coverlay layer 11 is arranged, and the substrate outer layer 1
A land layer 15, a wiring pattern layer 16, and a coverlay layer 17 are sequentially arranged on the lower surface side of the substrate 4.

Referring to FIG. 9, a flow of the correction work will be described.

First, a movement command is input (step P2).
0), designation of a land to be moved after input, and input of a layer number to which the land belongs (step P21).

Next, a layer number to which the land is moved and a coordinate value indicating a position on which the land is to be set are inputted (step P22). If the position does not change even if the layer changes, it is not necessary to input the coordinate values.

It is determined whether or not a coordinate value of the destination has been input (step P23). If there is a coordinate value input, a corresponding land is found from the graphic information, and the layer number and the coordinate value are input. Correction is made based on the layer number and the coordinate value (step P24).

If there is no coordinate value input, a corresponding land is found from the graphic information, and only the layer number is corrected (step P25).

Then, the corrected graphic information is displayed on the screen and confirmed (step P26).

[0012]

However, the above-described conventional graphic correction method has a problem that data specified in a certain specified layer can only be moved.

[0013] The reason is that, when the flexible substrate is incorporated into a device, it is bent into various shapes, and as a result, only the necessity of moving components is considered.

Accordingly, the present invention has been made in view of the above circumstances, and an object of the present invention is to change the number of layers of a substrate or change layers by inputting a command and a parameter for the change. It is an object of the present invention to provide a graphic data conversion method in a CAD device which performs a work and simplifies a change work.

[0015]

Means for Solving the Problems] To achieve the above object, a data conversion method of the present invention inputs the designation information of the layer plane of the layer number and the destination after the change, related to out layer of the graphic data
That attribute data Ji whether the data layer of the moving object
And Ekku, when a layer of the moving object, the graphic data
The attribute value of the target layer of the data
The layers are exchanged by changing to attribute values, and
Before moving the graphic data in the other layers, characterized in that.

[0016] In the present invention, by entering the specification information of the layer to be replaced subject, about the out layer of the graphic data
Whether or not the data of that attribute data is replacement of the target layer
Was checked and if a layer of replacement subject graphic in the layer units by performing exchange of data in the specified layers
The data is replaced .

According to the present invention, the number of layers after the change and the correspondence between the new and old layers after the change are given as parameters, the design data to be changed is read, and among the read data, the data relating to the pattern is included in the data. Check the layer that is held as attribute data, and if this is the data of the layer to be changed, change the value of the attribute data to the data of the layer given as a parameter, move the data and change the number of layers Perform processing. As described above, according to the present invention, the design data is read by giving the parameter for the designer to change the number of layers and the layers are exchanged, and the target data is changed. Is automatically performed.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of a data structure for describing an embodiment of the present invention. FIG. 1 shows the structure of a four-layer substrate, including a substrate outer layer 1, a first layer silk layer 2, a first layer resist layer 3, a first layer pattern layer 4, a second layer pattern layer 5, and a third layer pattern layer. 6, a fourth pattern layer 7, a fourth resist layer 8, and a fourth silk layer 9 are arranged.

In the embodiment of the present invention, data of graphic information constituting a substrate is managed for each layer.

FIG. 2 is a flowchart showing a processing flow of changing the number of layers according to the embodiment of the present invention. Referring to FIG. 2, first, the number of layers after the change is specified (step P1).

Next, it is specified which layer after the change is to be moved to which layer after the change (step P2). The parameters for changing the number of layers are set in the above two steps.

Next, the data of the substrate to be registered is read (step P3). Then, it is checked whether or not all data processing has been performed (step P4). If all data processing has been completed, the changed data is displayed (step P8).

On the other hand, if not all data processing has been completed, since the design data includes net data and back annotation data, it is checked whether or not the read data is data related to the pattern (step P).
5).

Each of the pattern data has, as attributes, data indicating a figure shape, a position and a layer in which the pattern data is located. Therefore, it is determined whether or not the data (parameter) of the movement target layer set in step P2 matches. Check (Step P
6).

As a result of the check in step P6, if the data is the data to be moved, the attribute value of the layer in the data is changed to the changed data, and the data is moved (step P7).

Then, the process shifts to the design data reading process in step P3, and when all data processes are completed, the changed data is displayed (step P8).

The above-described embodiment of the present invention will be described below using more specific examples. 3 and 4 are views for explaining one embodiment of the present invention.
It is a figure for explaining the number-of-layers change processing changed to a layer board. FIG. 3 shows the layer configuration of the four-layer plate before the change, and FIG. 4 shows the layer configuration of the six-layer plate after the change.

Referring to the flowcharts of FIGS. 3, 4, and 2,
The operation of one embodiment of the present invention will be described.

First, in step P1, the number of layers after change 6 is specified.

Next, in step P2, the layer correspondence before and after the change is specified. Here, L1 of the four-layer plate is changed to L1 of the six-layer plate,
The L2 of the 4-layer board is set to move to the L3 of the 6-layer board, the L3 of the 4-layer board to the L4 of the 6-layer board, and the L4 of the 4-layer board to the L6 of the 6-layer board.

Next, in step P3, a process of reading the design data of the four-layer board is performed.

Next, in step P4, a check is performed to determine whether or not processing of all data has been completed.

If all data processing has not been completed, it is checked in step P5 whether the read data is data relating to a pattern. Step P3
In addition to the data read in step (1), there are data related to net data and data related to change history in addition to data related to the pattern. Therefore, data related to the pattern is selected, and the routine goes to the next step P6.

Next, in step P6, it is checked whether or not the data is of a moving target layer. In this example, since the data in L1 of the four-layer board is also in L1 even in the six-layer board, it is not a layer movement target, so the process returns to step P3 to read the next data.

The read data is L2 to L of the four-layer plate.
If the data exists in step 4, the step P6 is passed to the next step P7 because the data is the layer to be moved.

Next, in step P7, data is moved to the designated layer. At this time, in the data movement, since data indicating which layer belongs to the data read in step P3, the data is rewritten.

Then, the process returns to the data reading operation in step P3, and the process is repeated. When all data processing is completed, data display is performed.

Next, as a second embodiment of the present invention,
FIG. 5 is a flowchart illustrating the process of changing layers.

Referring to FIG. 5, first, a layer to be replaced is designated (step P11). Then, a reading process of design data for performing a layer switching process is performed (step P12).

Next, it is checked whether all the design data has been processed (step P13). If all the processing has not been completed, the process proceeds to step P4, and it is checked whether or not the read data is related to the pattern.

If it is not related to the pattern, the process returns to step P12 and the data reading process is performed again. If it is the pattern data, the process proceeds to step P15, where the data of the layer possessed as the attribute of the read data is checked, and it is checked whether the data is the layer to be moved specified in step P11.

If it is the data of the layer to be moved, the data of the layer is replaced (step P16). Then, after performing the replacement process, step P12 is performed again.
To return to the next data reading process. This process is repeated until the processing of all data is completed, and when the processing of all data is completed, the changed data is displayed in step P17.

FIG. 5 is a diagram for explaining layer replacement as an example for specifically describing the second embodiment of the present invention. The operation of one embodiment of the present invention will be described with reference to the flowcharts of FIGS.
Note that FIGS. 6 and 7 are separated for convenience of drawing.

First, in step P11, a layer to be replaced is designated. 6 and 7, L2 in FIG. 6 is changed to L3 in FIG. 7, L3 in FIG. 6 is changed to L2 in FIG. 7, and L2 in FIG.
4 are changed to L5 in FIG. 7, L5 in FIG. 6 is changed to L4 in FIG. 7, and the layers are interchanged, and L1 and L6 are not interchanged. Here, the layer to be replaced is specified.

Next, design data is read in step P12.

Next, it is checked whether or not all the data read in step P13 has been processed, and if not completed, the flow proceeds to step P14. In step P14, it is checked whether or not the read data is pattern-related data.
Returning to step 12, the next data is read.

If the data is pattern data, the process proceeds to step P15, where it is checked whether the pattern data is data to be replaced. If the read data is the data of L1 and L6, it is not the data of the layer to be replaced, and the process returns to Step P12 to read the next data.

If the read data is L2 data, since the instruction to move (replace) and change to L3 is issued in step P11, the read data indicates in which layer the data is located. Since there is data that has been changed, the data is replaced by changing the corresponding data to L3 (step P16).

When the processing of all data is completed, the changed data is displayed (step P7).

[0051]

As described above, according to the present invention,
Even when an instruction to change the number of layers or replace layers is issued at any time (design stage) in the board design, the change operation can be performed efficiently.

The reason for this is that according to the present invention, the change processing of the number of layers and the layer replacement processing can be automatically performed by the change instruction given the attribute of the layer with respect to the graphic data in the design data. by.

[Brief description of the drawings]

FIG. 1 is a diagram for describing an embodiment of the present invention, and is a diagram illustrating a data configuration of a CAD system.

FIG. 2 is a flowchart illustrating a processing operation of changing the number of layers according to the embodiment of the present invention.

FIG. 3 is a diagram for explaining a processing operation of one embodiment of the present invention, and is a diagram showing a state of a four-layer plate before change.

FIG. 4 is a diagram for explaining a processing operation of one embodiment of the present invention, and is a diagram showing a state of a six-layer plate after a change.

FIG. 5 is a flowchart for explaining a layer switching processing operation according to the second embodiment of the present invention.

FIG. 6 is a diagram for explaining one embodiment of the present invention;
It is a figure which shows a mode of a layer exchange.

FIG. 7 is a diagram for explaining one embodiment of the present invention;
It is a figure which shows a mode of a layer exchange.

FIG. 8 is a diagram showing a data configuration according to a conventional technique.

FIG. 9 is a flowchart illustrating a processing operation according to the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Substrate outer layer 2 1st layer silk layer 3 1st layer resist layer 4 1st layer pattern layer 5 2nd layer pattern layer 6 3rd layer pattern layer 7 4th layer pattern layer 8 4th layer resist layer 9 4th layer Silk layer 11 Coverlay layer 12 Wiring pattern layer 13 Land layer 14 Board outer layer 15 Land layer 16 Wiring pattern layer 17 Coverlay layer

Claims (3)

(57) [Claims] (1) Specifying information on the number of layers after change and a layer surface of a movement destination.
Input and move attribute data related to layer in figure data
It is checked whether or not the data is of the target layer, and if the data is of the moving target, the moving target of the graphic data is checked .
Change the attribute value of the layer to the attribute value of the destination layer.
The layers are exchanged between and layers, and the figure data is
Graphic data conversion method in a CAD system Before moving, characterized in that the. 2. Inputting designation information of a layer to be replaced
And the attribute data related to the layer in the figure data is replaced
Check whether it is the data of the target layer and replace it
If it is the target layer, the data of the specified layer is exchanged, and the graphic data is exchanged for each layer.
Cormorants, graphic data conversion method in a CAD system, characterized in that. 3. The number of layers after the change and the correspondence between the new and old layers after the change are input as parameters, the design data to be changed is read, and among the read data, data relating to a pattern is included in the attribute data in the data. checks for the layer to be retained as the layer is moved or swapped
If the data of the example target layer, the value of the attribute data, by changing the data of the given layer as the <br/> parameter, by moving the data number of changes or layers, of the layer by layer
A graphic data conversion method in a CAD device, wherein a layer movement or a layer exchange process is performed.