JPH07182399A - Design rule checking device - Google Patents

Abstract

PURPOSE:To provide a design rule checking device which performs necessary check processing as to all wiring circuits, etc., which have areas (parts) differing in design rule two-dimensionally, by one-time design rule check. CONSTITUTION:In the design rule checking device equipping with a design data holding part 1, a design rule holding part 2, a design rule check arithmetic part 3, a check result holding part 4, and a check result display part 5, the design rule holding part 2, consists of plural mutually independent and different design rule holding parts, and, the effective ranges of respective independent design rules are allocated by areas set on design data and the check processing is performed according to the design rules allocated by the set areas.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a design rule check processing device in a screen display design device, and particularly to check processing data designed by mutually different design rules corresponding to a difference in two-dimensional position. The present invention relates to a suitable design rule check processing device.

[0002]

2. Description of the Related Art In response to so-called lightness, thinness, shortness, miniaturization, etc., an image called CAD (computer aided design or computer-aided design support) in, for example, designing a mounting circuit pattern. Display design means are widely used. That is, CA
The D design support system individually selects the required design data from the design database holding means in which the design data including wiring circuits, integrated circuits, capacitors for stabilizing the power supply voltage, etc. are input in advance. The layout of the printed wiring board (or mounted circuit device) is designed by moving and arranging it on the screen display surface. More specifically, for example, in the case of a printed wiring board, a wiring formation area (product area) is first set on the screen display surface of the image display means, and then a peripheral portion (non-wiring formation area) of this wiring formation area is set. ), The design data selecting means selects the required information from the database previously input to the design database holding means and provisionally arranges it, and the connection information (for example, the type and arrangement position of the parts) is stored. Based on (between the parts to be connected / arrangement position), the predetermined part information is sequentially moved within the wiring formation area for each piece.
The screen display is designed by the arrangement. Then, this screen display design proceeds according to so-called design rules. That is, the design data holding unit,
Whether the wiring pattern is set at an appropriate position, for example, in the design of the wiring pattern, by the design rule check device including the design rule holding unit, the design rule check calculation unit, the check result holding unit, and the check result display unit, Alternatively, the process is performed while checking whether or not the wiring pattern width is appropriate and conforms to certain rules.

By the way, in the case of the conventionally known design rule check device, one design rule is held two-dimensionally. For example, in a wiring pattern in which a circuit has a multilayer structure, each wiring pattern layer is Alternatively, one design rule is held for each circuit wiring. Along with the holding and configuration of such design rules, a check result holding unit for each wiring pattern layer or a check result holding unit for the entire circuit wiring is formed. In addition, there is also one that has a function to specify a certain area and check only that area, but since the design rule is set collectively for each circuit, other areas with different design rules can be set. It cannot be checked at the same time.

[0004]

As described above, in the case of the conventional design rule check device, since only one design rule is held two-dimensionally, there is a two-dimensional difference in position. Can not properly use design rules. For example, in the case of a circuit design in which a digital part and an analog part are mixed, there are two different design rules, digital and analog. Since the design rule that can be set in one check process is either one, it is necessary to perform the check process at least twice and change the design rule once. Moreover, in this case, if the check process is performed by the digital design rule, an error occurs in the analog part having a different rule, which often causes confusion. Conversely, if the check process is performed by the analog design rule, the rule is There is a problem that an error occurs in different digital parts. Further, in the case of designing a mounted circuit, even when the height limitation of the cylindrical electronic component to be mounted / arranged differs depending on the region, there are problems such as an increase in the number of checks and an error occurrence as in the above case.

In any case, in the case of the conventional design rule checking device, when an error due to the difference in the design rules as described above is displayed on the check result display section, the true display error is judged by the operator. Since it is necessary to determine false, not only the check process becomes complicated, but also check errors due to misunderstandings easily occur, and it can be said that there are problems in terms of design work efficiency and design reliability.

The present invention has been made in consideration of the above circumstances, and for wiring circuits having areas (portions) having different design rules two-dimensionally, all wiring circuits can be obtained by a single design rule check. It is an object of the present invention to provide a design rule check device capable of performing the check process of 1.

[0007]

A design rule check device according to the present invention comprises a design data holding section, a design rule holding section, a design rule check calculation section, a check result holding section and a check result display section. In the rule check device, the design rule holding unit is composed of a plurality of different design rule holding units independent of each other, and the effective range of each independent design rule is assigned to each area set on the design data, and each setting area is set. It is characterized in that the check processing is performed according to the assigned design rule.

That is, the design rule check device according to the present invention allocates the setting of the design rule to the area defined on the design data, so that the wiring circuit etc. having the two-dimensionally different design rule is once. The main point is that all the checks can be executed in the check process. Further, in the above configuration, it is possible to adopt a configuration in which a check result holding unit is additionally provided with a function of holding a check result for each area and a function of holding an error of a check result by a theoretical product and a theoretical sum.

[0009]

With the above configuration, the design rule checking apparatus according to the present invention checks all wiring circuits in one-time checking process for wiring circuits having two-dimensionally different design rules. Not only can it be done, but since appropriate rules are applied to each area, the output of spurious errors is also affected and the reliability of the check is improved. It is possible to check the complicated combinations that existed.

[0010]

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

FIG. 1 is a block diagram showing an outline of the configuration of a design rule check device according to the present invention. 1 is a design data holding unit, 2 is a design rule holding unit, 3 is a design rule check calculation unit, and 4 is a check. The result holding unit 5 has a configuration including a check result display unit. Here, the design rule holding unit 2 is configured into a plurality of different design rule holding unit types that are independent of each other, and the effective range of each independent design rule is assigned to each setting area on the design data. It is configured to perform check processing according to the specified design rules.

FIG. 2 schematically shows an operation or use example of the design rule checking device having the above-mentioned configuration. For example, a design drawing 6 of a wiring circuit, in other words, a design data holding section 1
For the wiring circuit based on the data held by, the design rule holding unit 2 is set such that the effective range of the design rule is divided into regions 7 and 8 (independently). Here, a physical check rule 9 for, for example, a wiring gap, a wiring width, a limiting height of wiring components, etc. is provided in correspondence with the set area 7, and a wiring line is also provided with a physical check rule 9 corresponding to the area 8, for example. Physical check rules 10 regarding gaps, wiring widths, restricted heights of wiring components, etc. are held in the design rule holding section 2 in a mutually independent form. With respect to the design data held in the design data holding unit 1, in the design rule check calculation unit 3, the design data 6a in the range of the area 7 and the design data in the range of the area 8 are set.
6b is taken out independently, and the rule check processing independent from each other is performed by the design rules 9 and 10 corresponding to the areas 7 and 8.

If an error is found as a result of the design rule check, the error is stored and held in the check result holding unit 4 as error information. Then, the error information 11 in the range of the area 7, the error information 12 in the area of the area 8, and the error information 13 in the area where the area 7 and the area 8 overlap each other are divided into a check result holding unit. Stored and held in 4. Further, the error information 13 in the range where the areas 7 and 8 are overlapped is
Error information 13a of logical sum of errors in area 7 and area 8
And error information 13b of the logical product of the errors are stored and held in the check result holding unit 4 separately.

In this way, the various error information 11, 12, 13 (13a, 13) stored and held in the check result holding unit 4
b) can be displayed in the check result display section 5 separately or in combination. For example, to display only the error information 11 in the range of the area 7, the check result of the range of the area 7 is displayed on the design circuit diagram 6, and the error information 11 in the range of the area 7 overlaps with the area. The difference from the logical sum error information 13a of the open portion can be displayed only in the error area 13 within the area 7 of the design circuit diagram 6 and not overlapping the area 8. The sum of the error information 11 in the area 7 and the error information 12 in the area 8 is
All errors in the design circuit diagram 6 are displayed. Then, by displaying the error information 11, 12, 13 (13a, 13b) separately or in combination on the check result display section 5, if necessary, any one of the error information 11, 12, 13 (1
By using the presence / absence of 3a, 13b) as a criterion of suitability, it is possible to properly check whether or not the design drawing complies with a predetermined rule.

[0015]

As described above, according to the design rule check device of the present invention, a design rule check process for a wiring circuit having areas having different design rules can be performed by a suitable rule in a single design rule check process. You can do it.
In other words, it becomes possible to easily perform the wiring circuit rule check including the areas having different design rules without requiring a complicated operation and a lot of time. Also, the check result is
Since error information can be displayed for each selected / set area or for each overlapping area, pseudo error information can be excluded, and reliable error information can always be provided. Screen display design (CAD
It can be said that it brings many advantages in terms of design).

[Brief description of drawings]

FIG. 1 is a block diagram showing a main configuration of a design rule check device according to the present invention.

FIG. 2 is a schematic diagram showing an operation example of a design rule check device according to the present invention.

[Explanation of symbols]

1 ... Design data holding unit 2 ... Design rule holding unit 3
… Design rule check calculation unit 4… Check result holding unit 5… Check result display unit 6… Design drawing 6
a, 6b… Design drawing of setting area 7, 8… Effective range (area) of different design rules 9, 10… Different design rules
11, 12, 13 (13a, 13b) ... Check information (error existence information)

Claims (3)

[Claims] 1. A design data holding unit, a design rule holding unit,
In a design rule check device comprising a design rule check calculation unit, a check result holding unit and a check result display unit, the design rule holding unit is composed of a plurality of different design rule holding units independent of each other, and each independent A design rule check device characterized in that an effective range of a design rule is assigned to each area set on design data and a check process is performed on each set area by the assigned design rule. 2. A design data holding unit, a design rule holding unit,
In a design rule check device comprising a design rule check calculation unit, a check result holding unit and a check result display unit, the design rule holding unit is composed of a plurality of different design rule holding units independent of each other, and each independent The effective range of the design rule is assigned to each area set on the design data, and the set area is configured to perform the check processing by the assigned design rule, and at least the check result holding function for each area is held as the check result. Design rule check device characterized by being held in the department. 3. A design data holding unit, a design rule holding unit,
In a design rule check device comprising a design rule check calculation unit, a check result holding unit and a check result display unit, the design rule holding unit is composed of a plurality of different design rule holding units independent of each other, and each independent The effective range of the design rule is assigned to each area set on the design data, and the set design area is configured to perform the check processing by the assigned design rule, and at least the check processing result for each area and the error of the check processing result are logically processed. A design rule checking device characterized in that the check result holding unit has a function of holding a product and a logical sum.