JPH0789357B2 - Unwired section display device using automatic wiring processing function - Google Patents

Description

The present invention relates to an unwired section display device for displaying an unwired section for performing manual wiring after an unwired section has occurred, and to improve the wire connection rate and efficiently perform automatic wiring. For the purpose of providing an unwired section display device using an automatic wiring function that enables the operation, a data generation means for generating data of a wiring grid that defines a wirable area and a basic grid that divides the wiring area, Data generating means for generating data of the wiring auxiliary grid arranged between the basic grid or the wiring grid, a detecting means for the already-wired pattern data, and an unwired section designation for specifying an unwired section in which wiring is not completed. And a wiring auxiliary grid, instead of the wiring grid, is used for wiring when there is no wiring grid available for wiring the unwired section. And a display device for displaying a route for performing wiring in the unwired section by using the wiring auxiliary grid by the output of the wirable portion discrimination means. There is.

[Industrial application field]

The present invention relates to a wiring technique for designing a pattern of an electric circuit by using a computer-aided design apparatus, and particularly, in conventional automatic wiring, displays an unwired section for manual wiring after an unwired section has occurred. The present invention relates to an unwired section display device.

[Conventional technology]

Generally, when performing two-layer wiring by automatic wiring processing,
As shown in FIG. 6 (a), an X-direction layer for wiring in the X-direction
21 and the Y-direction layer 22 to be wired in the Y-direction are determined in advance, and the wiring process is performed by combining the X-direction layer 21 and the Y-direction layer 22 while taking care not to intersect the wires in each layer. For example, if you wire from points 23 to 24,
Wiring is performed on the X-direction layer 21 from the point 23 to the relay hole 25, and wiring is performed on the Y-direction layer 22 from the relay hole 25 to the point 24. At this time, in the X direction layer 21 and the Y direction layer 22,
Wiring grids through which wirings can pass are set for convenience as shown in FIG. 6B, and wiring is performed along these wiring grids. However, if it is determined that these wiring grids are full or that the required pattern gap cannot be satisfied, further wiring cannot be performed.

In the automatic wiring, it is predetermined to ensure a necessary gap between the patterns in consideration of electrical characteristics such as prevention of crosstalk.

Generally, in the automatic wiring processing method using CAD, before performing the actual automatic wiring, in what order the wiring sections are to be wired, for example, in the order of the shortest wiring section or the signal line to be wired in the shortest distance. For example, the wiring route is determined by giving priority to the signal line or the like. Therefore, there are cases in which the wiring pattern that was previously wired is an obstacle, and there is a case where there is an area where wiring is possible, but the section where wiring is attempted later becomes unwired. There was a drawback that it became worse. Furthermore, after the automatic wiring is completed, it is necessary to manually correct the existing wiring pattern and input the wiring pattern to the unwired section.In that case, the existing wiring pattern is displayed on the display device and the wirable portion is visually determined. After that, the existing wiring pattern was appropriately changed.

As shown in FIG. 7, the X-direction layer 21 or Y is formed between the lands 26.
When the directional layer 22 is used for connection, even if it is desired to connect the land 27 and the land 28 at the end, the wiring of the Y-direction layer 22 which has already been wired becomes an obstacle. That is, not only is there no space in the wiring grid required for wiring, but if the wiring is forcibly attempted, the required gaps between the wirings cannot be secured. Therefore, the area between the lands 27 and 28 is indicated by a dotted line as shown in FIG. 7, and the operator is informed that he wants to wire this portion. I was studying the route that can be wired in the unwired part by hand so that the wiring could be made between 28.

[Problems to be Solved by the Invention]

As described above, conventionally, all wiring is performed by using a wiring grid, so that there is a drawback that the wiring is not performed even though there is a vacant area in which wiring is possible and the connection rate is deteriorated.

Furthermore, there is a problem in that the existing wiring pattern is displayed and then the pattern to be wired is simply displayed by a dotted line, and the operator visually checks the display to determine the wirable area manually.

In view of the above-mentioned conventional problems, an object of the present invention is to provide a non-wiring section display device using an automatic wiring function, which improves the wiring rate and enables automatic wiring efficiently. .

[Means for Solving the Problems]

The principle of the first invention is that, as shown in FIG. 1 (a), first, a basic lattice that passes between lands using a computer support device and a wiring lattice that is provided between the basic lattices between the lands are used. Data is generated by the data generation unit 1 of the data wiring grid and the basic lattice, and based on this data, the wiring auxiliary lattice generation unit 2 generates data for further providing a wiring auxiliary lattice between the data wiring lattice and the basic lattice. . With respect to the already-wired portion, the already-wired pattern data generating unit 3 generates already-wired pattern data including a portion in which the already-wired portion itself and a gap between the wires around the already-wired portion are taken into consideration. Further, there is an unwired section designating section 4 for designating a portion which is left as unwired and is to be wired. Then, based on the data from the data generation unit 1 of the wiring grid, the basic grid, the auxiliary wiring grid generation unit 2, the existing wiring pattern data generation unit 3, and the unwired section designation unit 4, the wirable portion determination unit 5 performs wiring. The feasible portion is discriminated, and the wirable route is detected in the wirable portion. By displaying the output of the wirable portion determination unit 5 on the display device 6, the wirable route is displayed on the display device 6 using the wiring auxiliary grid.

Further, according to the feature of the second invention, as shown in FIG. 1B, a partial wiring auxiliary grid is formed along the unwired portion of the existing wiring pattern generated by the existing wiring pattern data generation unit 11. Is generated in the partial wiring auxiliary grid generating unit 12. Then, the generation grid, the basic grid data generation unit 13, the unwired section designation unit 14 for specifying the unwired portion, and the already-wired pattern data generation unit 11
Using the output of the partial wiring auxiliary grid generating unit 12 and the wirable portion determination unit 15 detects a portion that can further wire the unwired section using the partial wiring auxiliary grid,
Output the route. Then, the wirable route of the unwired section output by the wirable portion determination unit 15 is displayed on the display device 16.

[Action]

According to the first aspect of the present invention, based on the data of the wiring grid, the basic grid, the wiring grid generated from the data generation unit 1 of the basic grid, the wiring auxiliary grid is provided between the wiring grid and the basic grid over the entire circuit pattern. Occurrence occurs, the route that can be routed in the unrouted section is discriminated using this wiring auxiliary grid, and the route is displayed on the display device. Therefore, the operator can perform the wiring by changing the other already-routed paths on the basis of the wirable paths using the auxiliary wiring grid.

According to the second aspect of the present invention, the partial wiring auxiliary grid generating unit 12 generates the partial wiring auxiliary grid only in the necessary portion of the unwired section so as not to overlap with the existing wiring pattern. The partial wiring auxiliary grid is used to detect the wiring route in the unwired section and display it on the display device. Since the routes that can be routed in the unrouted section are displayed, the operator can efficiently change other routes and improve the overall wiring rate.

〔Example〕

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

FIG. 2A shows a state in which the conventional automatic wiring process has been completed, and the lands 47 and 48 remain unwired. In FIG. 2 (b), a wirable path 31 is generated by using an auxiliary wiring grid according to the present invention, and the lands 47 and 48 are connected. FIG. 2 (c) shows the wiring changed based on the wirable path 31 so that each wiring has a desired wiring gap.

FIG. 3 is a flowchart showing the operation of the unwired section designating device according to the present invention. In FIG. 3, S1 shows after the conventional automatic wiring process is completed (FIG. 2 (a)). At this time, there is a case where the previously wired pattern becomes an obstacle and it becomes impossible to carry out the wiring of a part of the wiring section designated to perform the wiring. In the automatic wiring process, if the wiring is not possible, the wiring is not performed, so the unwired section that has not been wired is input (S2). Then, the wiring layer and the wiring area are set (S3). The wiring layer is set when the printed board is composed of a plurality of layers, and need not be set when the printed board is composed of only one layer. Further, the wiring area is set when there is a problem of delay time and wiring is performed at the shortest distance, and when wiring is performed at the shortest distance, a minimum rectangular area including an unwired section is set as the wiring area. When the wiring area is not set, the entire wirable area of the printed board is set as the wiring area. Next, based on the setting reference data or the input data card, the wiring grid for automatic wiring is set in the wiring area in the wiring layer described above (S4). In the wiring grid for automatic wiring set in step S4, the portion in which the existing wiring, the wiring prohibited area, or the like exists is set to be unwiring (S5). A wiring auxiliary grid is set between the wiring grids for automatic wiring (S6). In addition to the wiring grid for the automatic wiring, the wiring auxiliary grid is used to perform the automatic wiring processing by using the well-known wiring line segment search method, line search, and mail method (maze) (S7). That is, on the wiring grid for automatic wiring and the wiring auxiliary grid, a wirable section is searched for and connected as the wirable path 31 (FIG. 2 (b)). Next, the automatic wiring result is used as display data for the unwired section (S8). Then, the unwired section is displayed on the screen of the display device (S9). still,
When determining the wirable portion in S7, the necessary gap between the wiring patterns is not checked. Therefore, as shown in FIG. 2 (b), the land 47 left unwired remains.
When the wirable path 31 between the land and the land 48 is displayed, the gap between the wirable path 31 and the existing wirings 32, 33 is smaller than desired. Then, as shown in FIG. 2 (c), the wirable path 31 using the auxiliary wiring grid and the existing wiring
The position of the wiring 33 is reversed and changed to 33 'so that the spaces 32 and 33 have a predetermined gap, and accordingly, the position of the wiring 34 is changed to the wiring 34'.
In addition, by adjusting so that the gap between the wirable route 31 using the auxiliary grid and the existing existing wiring 32 is sufficient, the wirable route 31 using the wire auxiliary lattice is also slightly positioned to 31 '. Not only shift the existing wiring 32, but also shift the wiring to 32 '31'
And 32 'by hand to create a sufficient gap (S10).

FIG. 4 illustrates the method of automatic wiring according to the present invention shown in FIG. 3 more specifically.

In FIG. 4A, the wiring basic grids 41, 42, 43 are arranged in equal divisions, and two wiring grids 44, 45 are equally divided or non-uniformly arranged between them. This wiring grid 44 and 45
Are arranged so that when the patterns of standard width pass on the wiring grid, the distances required between the patterns are satisfied. For example, in FIG. 4 (b), the basic lattice 41
And 42, a component land 46 or a via (through hole) is provided, and arrangement patterns 44 ', 45' are provided between the basic lattices 41, 42.
, But is provided on the wiring grids 44, 45. Here, the wiring grids 44 and 45 are shown by dotted lines. And wiring pattern 4
Between 4'and 45 ', and between wiring patterns 44' and 45 'and basic grid 4
There is a sufficient space between 1 and 42 to remove crosstalk. Therefore, between the standard component land 46
There are 2.54 mm intervals, and wiring patterns 44 'and 45' are provided with a necessary gap therebetween. Then, as shown in FIG. 2 (a), when wiring is completed using the wiring pattern on the wiring grid and, for example, lands 47 and 48 still remain as unwired sections (see FIG. b)),
Wiring between lands 47 and 48 cannot be done using a wiring grid. Therefore, as shown in FIG. 4C, between the wiring grids 44 and 45 provided between the basic grids 41 and 42, a wiring auxiliary grid 49,
Provide 50, 51. Then, using the wiring auxiliary grids 49, 50 and 51, as shown in FIG.
It is detected that wiring is possible by ignoring the gap between wirings between the lands 47 and 48 where wiring is not possible, and this is displayed on the display device. Thereafter, as shown in FIG. 2C, the existing wiring pattern may be manually changed so that the wiring pattern has a predetermined gap.

Therefore, conventionally, the wirable region has a wirable path 31 on the display device by using the auxiliary wiring grid as compared with the case where the unwiring section is only indicated by the dotted line between the component lands 27 and 28 as shown in FIG. Is displayed, it is only necessary to manually move the other existing wiring while visually observing the wirable route 31, so that the wiring can be performed extremely efficiently. Furthermore, since the auxiliary wiring grid is used here, even if wiring cannot be performed by the conventional wiring grid alone, it becomes possible to interrupt and draw a route in which wiring is possible.

Unlike FIG. 4, FIG. 5 shows a case where the wiring grid is not fixed in advance. As shown in FIG. 5 (a), a wirable area 52 is set between existing patterns 51, and in the wirable area 52, there is a wire 53 and a pattern considering the line width around the wire 53. And Next, as shown in FIG. 5B, wiring grids 54, 55, 56 are created according to the existing pattern 51. It is assumed that the existing pattern 51 has already been placed on this wiring grid. And between the wiring grids 54 and 56,
Partial wiring auxiliary grids 57, 58, 59 are formed in the portions required for wiring. Then, passing over this partial wiring auxiliary grid,
As shown in Figure (b), possible wiring routes in unwired sections
By interrupting 31 and pulling, a wiring pattern as shown in FIG. 2C can be obtained in the same manner as described above.

〔The invention's effect〕

According to the present invention, by using the wiring auxiliary grid or the partial wiring auxiliary grid, the wirable route of the unwiring section is displayed, and then the wiring route of the already-wiring pattern is changed, so that the wiring efficiency and the connection rate are markedly improved. Can be improved.

[Brief description of drawings]

FIGS. 1 (a) and 1 (b) are diagrams showing the basic principle of the present invention, FIGS. 2 (a) to 2 (c) are diagrams showing an unwired section according to an embodiment of the present invention, and FIG. 4 is a flow chart showing an embodiment of the present invention, FIGS. 4 (a) to 4 (c) are views for explaining a wiring procedure using an auxiliary wiring grid according to the present invention, and FIGS. 5 (a) to 5 (c) are books. FIG. 6 is a diagram for explaining a wiring procedure using a partial wiring auxiliary grid according to the invention, FIGS. 6 (a) to 6 (c) are diagrams for explaining a wiring method using a general wiring grid, and FIG. It is a top view showing a wiring method. 1 ... Wiring grid, basic grid data generation section, 2 ... Wiring auxiliary grid generation section, 3 ... Existing wiring pattern data generation section, 4 ... Unwired section designation section, 5 ... Wiring possible section determination section, 6 ...... Display device.

Claims (2)

[Claims] 1. A data generating means (1) for generating data of a wiring grid that defines a wirable area and a basic grid that divides the wiring area, and data of an auxiliary wiring grid arranged between the basic grid or the wiring grid. A data generating means (2) for generating a wiring pattern, a detection means (3) for the existing wiring pattern data, an unwired section designating means (4) for designating an unwired section in which wiring is not completed, and the unwired section When there is no usable wiring grid required for wiring, the wiring possible part discrimination means for discriminating whether or not wiring is possible by performing wiring using the wiring auxiliary lattice instead of the wiring lattice ( 5) and a display device (6) for displaying a route for performing wiring in the unwired section by using the wiring auxiliary grid, according to the output of the wirable portion determining means. Unwired section display device using a management function. 2. A data generating means (13) for generating data of a wiring grid defining a wirable area and a basic grid for dividing the wiring area, a means (11) for detecting already-wired pattern data, and the already-wired pattern data. And a data generating means (12) for generating data of the partial wiring auxiliary grid partially arranged between the basic grid or the wiring grid, and a non-wiring section for designating an unwired section where wiring is not completed. When there is no usable wiring grid required for performing wiring in the unwired section with the wiring section designating means (14), wiring is performed using the partial wiring auxiliary grid instead of the wiring grid. Wiring possible part discriminating means (15) for discriminating whether or not wiring is possible by carrying out
And a display device (16) for displaying a route for performing wiring in the unwired section by using the partial wiring auxiliary grid by the output of the wirable part determination means. An unwired section display device using.