JP2830550B2 - Integrated circuit layout design equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in an integrated circuit layout design apparatus for designing an integrated circuit layout by computer aided design (CAD).
The present invention relates to a layout figure editing method for designing a layout of an integrated circuit.

[0002]

2. Description of the Related Art In a conventional layout graphic editing method in an integrated circuit layout designing apparatus, a distance between any two designated points in a horizontal or vertical direction could be displayed. The display is not performed for only one of the directions and for the intermediate distance between the designated two points.

[0003]

In the above-described layout graphic editing method in the conventional integrated circuit layout design apparatus, an intermediate distance between any two specified horizontal or vertical points is not displayed. The operator has to always display the distance even at an intermediate point between any two points in the horizontal or vertical direction. And one
Since only the direction was displayed, when the work was performed in both directions, it was necessary to display the distance in both the horizontal direction and the vertical direction each time. That is, there is a disadvantage that the work is fine and the editing efficiency is reduced.

An object of the present invention is to provide an integrated circuit layout design apparatus having a layout graphic editing method capable of improving processing efficiency by eliminating the above-mentioned disadvantages.

[0005]

According to the present invention, there is provided an integrated circuit layout designing apparatus provided with an editing means for editing a layout graphic, wherein the editing means sets any two points in an editing area for editing the layout graphic. By specifying
Area specifying means for specifying a rectangular area having a line connecting two points as a diagonal line, and a scale numerical value for simultaneously displaying equally-spaced scales and numerical values on one of horizontal and vertical sides of the specified rectangular area Display means.

[0006]

The area is designated by designating any two points in the editing area by the area designating means. Then, the scale and numerical values are displayed at equal intervals on the upper side and the left side or the lower side and the right side of the rectangle formed by the specified two arbitrary points by the scale numerical value display means.

Therefore, the distance between the two points is displayed simultaneously in the two directions of the horizontal direction and the vertical direction, and the intermediate distance between the directions is also displayed by the displayed scale and numerical value, thereby improving the processing efficiency. Can be done.

[0008]

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

FIG. 1 is a block diagram showing a main part of an embodiment of the present invention.

This embodiment comprises a layout means 3 for inputting design data 1, laying out including wiring, and outputting layout data 2, and an auxiliary storage device 4. The layout means 3 is an editing means for editing layout figures. In the integrated circuit layout design apparatus provided with the editing device 10, the editing device 10, which is a feature of the present invention, includes an area designating device 11 for designating an arbitrary region in an editing region for editing a layout graphic, and It includes scales at equal intervals and scale numerical value display means 12 for displaying numerical values simultaneously in two directions, that is, the horizontal direction and the vertical direction of the area.

Next, the operation of this embodiment will be described with reference to FIGS. Here, FIG.
0, FIG. 3, FIG. 4, and FIG. 5 are application examples.

As shown in FIG. 3, arbitrary two points 101 and 102 are designated by the area designating means 11 in the layout graphic editing area in the layout design (step S1). As shown in the drawing, scales 1 are provided at equal intervals on the upper side and the left side of the rectangle 103 formed by the designated two points 101 and 102, respectively.
04 and 105 and numerical values 106 and 107 are displayed (step S2).

FIG. 5 is different from the one shown in FIG.
The scales 108 and 109 and the numerical values 110 and 111 are displayed on the lower side and the right side of the rectangle 103 formed by the rectangles 102 and 102, respectively. In this case, the scale and number displayed will be
Because the lower and right sides of the rectangle are displayed in the outer area of the rectangle formed by any two specified points, the value of the numerical value displayed at the same time as the scale is the same as when displayed on the upper and left sides of the rectangle. The character strings representing numerical values are displayed upside down in the vertical direction.

[0014]

As described above, according to the present invention, the scale and the numerical value are displayed on the upper side and the left side or the lower side and the right side of the rectangle formed by designating any two points in the design area in the layout design. Therefore, there are many restrictions in the horizontal and vertical directions of the layout graphic to be targeted, and there is an effect that the processing efficiency can be improved in the layout design of an integrated circuit using a regular arrangement due to the nature of the layout design and the repetitive graphics. .

[Brief description of the drawings]

FIG. 1 is a block diagram showing a main part of an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation.

FIG. 3 is a diagram showing an application example of the area designation means.

FIG. 4 is a diagram showing an application example (1) of the scale numerical value display means.

FIG. 5 is a diagram showing an application example (2) of the scale numerical value display means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Design data 2 Layout data 3 Layout means 4 Auxiliary storage device 10 Editing means 11 Area designation means 12 Scale numerical value display means 101, 102 points 103 Rectangle 104, 105, 108, 109 Scales 106, 107, 110, 111 Numerical values S1, S2 Steps

Claims (1)

(57) [Claims] 1. An integrated circuit layout design apparatus comprising editing means for editing a layout graphic, wherein the editing means specifies two arbitrary points in an editing area for editing the layout graphic.
By setting the line connecting these two points as a diagonal
A region designation means for designating a shape area, horizontal and vertical sides of the specified rectangular area
An integrated circuit layout design apparatus characterized by including scales at equal intervals and scale numerical value display means for simultaneously displaying numerical values on one of the two sides.