JPH06348783A - Layout data generator - Google Patents

Abstract

PURPOSE:To prevent unexpected shortage from occurring when layout data is moved. CONSTITUTION:An equipotential number is attached on a graphic that is the constituent of the layout data 3 when it is inputted in step P1. When the graphic is moved. contact with another graphic is retrieved, and the equipotential number of the graphic coming in contact with another graphic is different from that of a moved graphic, the fact is notified to an input/output device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a layout data creating apparatus for creating a set of geometric figures (layout data) necessary for manufacturing integrated circuits, and more particularly to a layout data input means.

[0002]

2. Description of the Related Art Referring to FIG. 5 showing a conventional layout data generating device and its operation flow, when a graphic is added to layout data 3, first, a graphic input from an input / output device 2 is stored in an internal memory 301. (Step 35
1).

The figure stored in the internal memory 301 is added to the layout data 3 (step 352). Conventional graphics are composed of information on the type of shape, coordinate values, and layer name.

Next, when the figure stored in the layout data 3 is moved, the figure selected by the input / output device 2 is stored in the internal memory 302 (procedure 353) and stored in the internal memory 302. The graphic is deleted from the layout data 3 (step 354).

Next, the position of the graphic is moved by rewriting the coordinate value of the graphic stored in the internal memory 302 with the coordinate value input from the input / output device 2 (procedure 3).
55).

The figure stored in the internal memory 302 is added to the layout data 3 and the layout data 3 is updated (procedure 355).

[0007]

As described above, in the conventional layout data generating apparatus, the movement of the figure is performed by changing the coordinate value of the figure. At this time, the figure to be moved is connected to the circuit. As a shape that should not touch,
It had the drawback of making the wrong connection.

Particularly, when the layout data is enlarged and displayed on the input / output device, the graphic to be moved may not fit on the display screen of the input / output device, and the graphic after the movement is displayed on the display screen. Outside the visible range, there may be cases where it touches a figure that should not be touched as a circuit connection.In such a case, there is no means to detect the contact of the figure and the layout
Data creation is a fatal mistake.

[0009]

The layout data creating device is configured to search for contact between a means for adding an equipotential number to an inputted figure and a figure other than the figure to be moved when the figure is moved. It is characterized by comprising means and means for judging whether or not the equipotential number of the moving figure and the equipotential number of the contacted figure match.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 and 2, which are a part of the procedure of the apparatus according to the first embodiment of the present invention, first, in the layout data generating apparatus shown in FIG. First reads the equipotential tracking rule 1 and stores it in the internal memory 101 (procedure 151).

Here, the equipotential tracing means that, when two figures touch each other, the potentials of the touched figures are judged to be the same potential by judging the respective layer names. The information to be judged is called an equipotential tracking rule.

The equipotential tracking rule is described by a set of two layer names. If the figures with the layer names in the equipotential tracking rule are in contact with each other, or if the figures with the two layer names in the pair are in contact with each other, these figures are said to be designated for equipotential tracking.

Next, the graphic input from the input / output device 2 is stored in the internal memory 102 (step 152).

The graphic handled in this embodiment is composed of information on the type of shape, coordinate value, layer name, and equipotential number. The figure input in step 152 includes the type of shape, coordinate value, and layer. Name is specified and only equipotential numbers are undefined.

Next, it is judged whether or not the layer name of the graphic stored in the internal memory 102 exists in the equipotential tracking rule stored in the internal memory 101 (step 153).

If the layer name of the graphic stored in the internal memory 102 does not exist in the internal memory 101 (N), the internal memory 1
The graphic stored in 02 is added to the layout data 3 (step 166).

When the layer name of the graphic stored in the internal memory 102 is in the internal memory 101 (Y), a graphic having the same potential as the input graphic is retrieved from the layout data 3 and stored in the internal memory 103. (Procedure 154).

If there is no figure in contact with the inputted figure (N) (step 155), the equipotential added to the figure in the layout data (locations having the same electric potential).
An independent equipotential number that does not overlap with the number is generated, and the generated equipotential number is added to the internal memory 102 (procedure 16).
5) The graphic stored in the internal memory 102 is stored in the layout data 3 (procedure 166).

As a result of the search (step 154), if there is a figure in contact with the input figure (Y) (step 155), the equipotential number of the figure stored in the internal memory 103 is searched and stored in the internal memory 104. (Procedure 156).

Next, when the equipotential number stored in the internal memory 104 is single (N) (step 157), the equipotential number stored in the internal memory 104 is added to the internal memory 102 (step 164). , The graphic stored in the internal memory 102 is stored in the layout data 3 (step 166).

When there are a plurality of equipotential numbers stored in the internal memory 104 (Y) (step 157), the internal memory 10
The graphic having the equipotential number stored in No. 4 is searched from the layout data 3 and stored in the internal memory 105 (procedure 1
58).

Next, the figure stored in the internal memory 105 is deleted from the layout data 3 (procedure 159), and the equipotential number of any figure among the figures stored in the internal memory 105 is selected to select the internal memory. The data is stored in 106 (step 160).

Next, the equipotential numbers of all the figures stored in the internal memory 105 are changed to the equipotential numbers stored in the internal memory 106 (step 161), and the figures stored in the internal memory 105 are laid out. The data is stored (procedure 162).

Next, the equipotential number stored in the internal memory 106 is added to the graphic stored in the internal memory 102 (step 163), and the graphic stored in the internal memory 102 is stored in the layout data 3. (Procedure 166).

When moving a figure, first, referring to FIG.
The graphic specified by the input / output device 2 is selected from the layout data 3 and stored in the internal memory 107 (step 16).
7). Next, the graphic stored in the internal memory 107 is deleted from the layout data 3 (step 168). next,
The coordinate value to be moved is fetched from the input / output device 2, the coordinate value of the graphic stored in the internal memory 107 is changed, and the coordinate value is stored in the internal memory 108 (step 169).

Next, the layout data 3 is searched for a graphic that has the same potential as the graphic stored in the internal memory 108 and is in contact with the graphic in the internal memory 108, and is stored in the internal memory 109 (step 170).

If there is no figure stored in the internal memory 109 (N) (step 171), the figure stored in the internal memory 108 is stored in the layout data 3 (step 17).
6).

If there is a figure stored in the internal memory 108 (Y) (step 171), the equipotential number of the figure in contact with the figure stored in the internal memory 109 is retrieved and stored in the internal memory 110 (step 172). ).

If the equipotential number in the internal memory 110 is single (N) (step 173), the graphic stored in the internal memory 108 is stored in the layout data 3 (step 1).
76).

When there are a plurality of equipotential numbers in the internal memory 110 (Y) (procedure 173), a display indicating that the moved figure contacts another figure is output to the input / output device 2 (procedure 174).

Next, the graphic before movement stored in the internal memory 107 is stored in the layout data 3 (procedure 17).
5).

This completes the movement of the figure.

The step P1 in FIG. 1 is a step of adding an equipotential number to the input figure, and the step P2 in FIG. 2 is a step of searching for a contact with a figure other than the figure that moves when the figure moves. The step P3 is a step of judging whether or not the equipotential numbers of the touched figures match.

3 and 4 showing a part of the apparatus and procedure of the second embodiment of the present invention, arrows A, B and C in FIG.
Are connected to the same arrows A, B and C in FIG. 4, respectively.
The whole of this embodiment is shown in combination with FIG.

Step P4 in FIG. 3 is a step of searching for a contact with a figure other than the figure that moves when the figure moves, and step P5 is a step of determining whether or not the equipotential numbers of the touched figures match. is there.

In the layout data generating apparatus shown in FIGS. 3 and 4, when moving a figure, first, the figure designated by the input / output device 2 is selected from the layout data 3 and stored in the internal memory 201. (Procedure 251).

Next, the graphic stored in the internal memory 201 is deleted from the layout data 3 (step 252).

Next, the coordinate value to be moved from the input / output device 2 is fetched, the coordinate value of the figure stored in the internal memory 201 is changed and stored in the internal memory 202 (step 253).

Next, the layout data 3 is searched for a graphic that has the same potential as the graphic stored in the internal memory 202 and is in contact with the graphic in the internal memory 202, and stored in the internal memory 203 (step 254).

If there is no figure stored in the internal memory 203 (N) (step 253), the figure stored in the internal memory 202 is stored in the layout data 3 (step 26).
3).

If there is a figure stored in the internal memory 203 (Y) (step 253), the equipotential number of the figure in contact with the figure stored in the internal memory 203 is searched and stored in the internal memory 204 (step 254). ).

When the equipotential number in the internal memory 204 is single (N) (step 255), the graphic stored in the internal memory 202 is stored in the layout data 3 (step 2).
63).

When there are a plurality of equipotential numbers in the internal memory 204 (Y) (procedure 255), a display indicating that the moved figure touches another figure is output to the input / output device 2,
It waits for an input as to whether or not contact is possible (step 256).

When there is an instruction from the input / output device 2 that the contact should not be made (N) (step 257), the graphic before movement stored in the internal memory 201 is stored in the layout data 3 (step 262). .

When there is an instruction from the input / output device 2 that the contact may be made (Y) (step 257), the internal memory 2
All the figures having the same equipotential number as the figure in contact with the figure after the movement stored in 03 are searched from the layout data 3 and stored in the internal memory 204 (step 258).

Next, the graphic stored in the internal memory 204 is deleted from the layout data 3 (step 259).

Next, the equipotential numbers of the figures that are in contact with the moved figure stored in the internal memory 204 are stored in the internal memory 20.
The equipotential number of the moved figure stored in 2 is changed (step 260).

Next, the graphic stored in the internal memory 202 and the graphic stored in the internal memory 204 are added to the layout data 3 (step 261).

This completes the movement of the figure.

[0050]

As described above, in the layout data creating apparatus of the present invention, when the layout data is modified,
By outputting the contact between figures with different equipotential numbers to the input / output device, it is possible to prevent the contact of figures with different potentials outside the range visible on the display screen of the input / output device. Can reduce mistakes.

[Brief description of drawings]

FIG. 1 is a flow chart of a first part of the first embodiment of the present invention.

FIG. 2 is a flow chart of a second part of the first embodiment of the present invention.

FIG. 3 is a flow chart of the first part of the second embodiment of the present invention.

FIG. 4 is a flow chart of a second part of the second embodiment of the present invention.

FIG. 5 is a flowchart of the operation of the conventional layout data creation device.

[Explanation of symbols]

1 Equipotential Tracking Rule 2 Input / Output Device 3 Layout Data P1 to P5 Steps 101 to 110, 201 to 204, 301, 302
Internal memory 151-176, 251-263, 351-356
procedure

Claims (3)

[Claims] 1. A means for adding an equipotential number to an inputted figure, a means for searching for a contact with a figure other than the moving figure when the figure is moved, and a contact with the equipotential number of the moving figure. And a means for determining whether or not the equipotential numbers of the drawn figures match.
Data creation device. 2. The layout data creating apparatus according to claim 1, wherein the determining means includes means for determining whether or not there are a plurality of equipotential numbers. 3. The layout data creating apparatus according to claim 1, wherein the determining means includes means for deleting all the figures having the same equipotential number as the figure in contact with the moved figure.