JPH05128213A - Interactive wiring method - Google Patents

Abstract

PURPOSE:To improve the efficiency at the time of a CAD interactive design by automatically retrieving a design rule error part at the time of an LSI design and PWB design and automatically enlarging and displaying the part. CONSTITUTION:The presence or absence of a design rule error is decided by an error deciding part 1. At the time of the presence of the design error, the error is automatically retrieved by an error retrieving part 2 and the coordinate is found by an error coordinate recognizing part 3. Then, an appropriate magnification is found by an appropriate magnification calculating part 5 in the control of an error part enlargement control part 4 and the error part is automatically enlarged and displayed according to the appropriate magnification by an enlarging and displaying part 6. The correction of the error part is operated by using a command group by a commanding part 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CAD system interactive wiring method, and more particularly, to a method for performing wiring in an LSI design and a PWB design using an interactive method.

[0002]

2. Description of the Related Art In the conventional interactive wiring method, after designing a wiring, if there is a design rule error, the error is corrected as follows. First, the operator recognizes an arbitrary error location from among several errors on a limited screen space. Then, an error is corrected by designating a portion to be enlarged and displayed by a rectangle. Figure 3 shows the wiring part that shows that state.
It is a figure which shows the state in which the inside of a rectangle is expanded and displayed. Thereafter, using the enlarged screen, the wiring correction for removing the design error is performed by a conventional command such as wiring movement.

[0003]

In the conventional interactive wiring method, there is a design rule error during the wiring design or at the end stage, and when an attempt is made to correct it, the error location on the screen is searched for and its part is searched. The procedure of expanding and correcting the error part was performed for all errors. Therefore, when the number of design rule errors is large, there is a drawback that a series of work such as an error location search and an error location expansion increases, resulting in a decrease in efficiency. An object of the present invention is to solve the above-mentioned drawbacks, and to provide an interactive wiring method capable of efficiently correcting an error point in a wiring design.

[0004]

In order to achieve the above object, the interactive wiring method according to the present invention determines whether or not there is a design rule error at the time of wiring design by an error determination unit, and the error determination unit determines the presence of an error. In such a case, the error search unit automatically searches for an error point, and the coordinates of the position are obtained by the error coordinate recognition unit. Under the control of the error unit enlargement control unit, the appropriate magnification calculation unit obtains the appropriate magnification for enlargement. The enlargement display unit automatically enlarges and displays the error portion in the center of the screen according to the obtained appropriate magnification, and corrects the design rule error using the command group of the command unit.

[0005]

According to the above construction, the location of the design rule error can be automatically searched and enlarged in the center of the screen for efficient wiring correction.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below with reference to the drawings. 1 to 5 are diagrams showing each step of the interactive wiring method according to the present invention, and FIG. 6 is a block diagram for explaining the procedure of the interactive wiring method according to the present invention. FIG. 1 shows a state in which wiring is completed and wiring design rule error = 2 is displayed on the CRT screen. The process of setting the design rule error to 0 will be described with reference to FIGS. On the screen of FIG. 1, an error search is hit by a mouse not shown. The error search unit 2 and the error coordinate recognition unit 3 automatically search for an error point and recognize the coordinate value. Then, under the control of the error portion enlargement control unit 4, the proper magnification calculation unit 5 obtains the proper magnification for the error portion enlargement display.

The magnifying display section 6 magnifies and displays so that the error portion is automatically located at the center of the screen by using the obtained proper magnification. FIG. 2 is a diagram showing this enlarged display screen. The symbol C displayed on the screen is an identifier indicating that the wires intersect. As you can see from the display screen, you can enlarge the error location accurately and instantly by simply setting the mouse to search for errors. Next, this wiring crossing is moved by a moving command of the command unit 7 which is generally prepared, and the wiring is fixed. In this way, when the wiring is determined, the design rule error is reduced by 1, and at the same time, the error identifier C indicating the intersection disappears, and it can be confirmed that the correction is normally performed.

FIG. 3 is a diagram showing the screen state. The dotted line in the figure shows the wiring before movement. At this point, the design rule error = 1 is shown on the screen of FIG. 3, so the work is further advanced. Similar to the above, the automatic search for the error location, the calculation of the proper magnification, and the enlarged display are automatically performed and the relevant error location is displayed on the screen. FIG. 4 is a diagram of a screen showing the state at this time. The same wiring correction is performed for this error, and the interactive wiring is completed when the design rule error = 0. FIG. 5 shows this state. In this way, the setting rule error portion is automatically searched for without relying on a person, and further, it is automatically enlarged and displayed, whereby efficient interactive wiring can be performed.

[0009]

As described above, according to the wiring method of the present invention, the design rule error portion at the wiring design stage is automatically searched and automatically enlarged and displayed, so that the efficiency at the time of wiring correction can be greatly improved. There is.

[Brief description of drawings]

FIG. 1 is a diagram showing an entire screen of a CRT showing a wiring state of a PWB.

FIG. 2 is a diagram in which a design rule error point is automatically enlarged and displayed.

FIG. 3 is a diagram showing a screen when wiring is corrected at a design rule error portion in FIG.

FIG. 4 is a diagram in which other design rule error points are automatically enlarged and displayed.

FIG. 5 is a diagram showing a screen when wiring is corrected at a design rule error portion in FIG. 4;

FIG. 6 is a block diagram for explaining the procedure of the interactive wiring method according to the present invention.

FIG. 7 is a diagram for explaining a conventional wiring method.

[Explanation of symbols]

 1 ... Error determination unit 2 ... Error search unit 3 ... Error coordinate recognition unit 4 ... Error unit enlargement control unit 5 ... Appropriate magnification calculation unit 6 ... Enlargement display unit 7 ... Command unit

Claims (1)

[Claims] 1. When the presence or absence of a design rule error at the time of wiring design is determined by an error determination unit and the presence of an error is determined by the error determination unit,
The error search unit automatically searches for the error location and the coordinates of the position are obtained by the error coordinate recognition unit. Under the control of the error unit enlargement control unit, the proper magnification calculation unit finds the proper magnification at the time of enlargement and the enlarged display. An interactive wiring method characterized in that an error location is automatically enlarged and displayed in the center of the screen according to the appropriate magnification obtained by the section, and a design rule error is corrected using a command group of the command section.