JPH0574943A - Cad device for designing integrated circuit layout pattern - Google Patents

Abstract

(57) [Summary] [Purpose] To enable simultaneous editing of multiple cell data at the same hierarchical level. [Structure] In order to enable simultaneous editing of cell data of the same hierarchy level, key number data corresponding to the one-to-one correspondence is added to the graphic element data in the cell data, and when the graphic element data is edited, it is edited. By storing and managing the key number data of the figure element data in the editing work unit, it is possible to simultaneously edit the cell data of the same hierarchical level.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CAD (computer aid) for designing an integrated circuit layout pattern used for designing a layout pattern of an integrated circuit such as an LSI.
d design) device.

[0002]

2. Description of the Related Art FIG. 3 is a flow chart showing a procedure for editing an integrated circuit layout pattern by a conventional CAD device for designing an integrated circuit layout pattern. In FIG. 3, a step N1 is a library open process for making a library file in which a plurality of LSI layout pattern data (cell data) having a hierarchical structure are attached and managed so that the library file is editable, and a step N2 is a step for editing cell data attached to the library file. Cell open processing for making editable state, step N3 is processing for determining whether the same cell data is edited by other editing work, step N4 is cell data editing processing, step N5 is editing operation in step N4. Cell closing processing for bringing the cell data subjected to the editing to the editing end state, step N6 is a library closing processing for bringing the library file into the editing end state, and step N7 is for the cell data edited by other editing work in step N3. Cell open in display mode to display Management, step N8 is an edit-in-place process of the cell open process has been lower editable state of the cell data of the cell data in the display mode in step N7.

[0003]

In the conventional CAD device for designing an integrated circuit layout pattern, the integrated circuit layout pattern (cell data) is edited according to the above-described editing work procedure, but the cell data of the same hierarchical level is used. There is a problem in that it is impossible to edit the image with a plurality of editing operations, and it is difficult to improve the efficiency of the editing operation.

The present invention has been made to solve the above problems, and it is an object of the present invention to provide a CAD device for designing an integrated circuit layout pattern, which enables a plurality of editing operations of cell data of the same hierarchical level. And

[0005]

A CAD device for designing an integrated circuit layout pattern according to the present invention has a key number corresponding to the graphic element data in the cell data in a one-to-one correspondence, and selects a graphic element data at the time of selection. Key number acquisition means 11 for acquiring the corresponding key number data, selected key number storage means 15 for storing and managing the acquired key number data in editing work units, and the stored key number data for other editing work. Check if it is not used in
It is provided with a graphic element selection confirmation means 13 for permitting self-editing work when not in use and disabling self-editing work when in use.

[0006]

The key number data added to the graphic element data is obtained by the key number obtaining means 11 and is stored and managed by the selected key number storage means 15 in editing work units. When the graphic element selection confirmation means 13 confirms the key number of the graphic element data being edited in another editing operation, the graphic element selection confirming means 13 disables the self-editing operation of the graphic element data being edited.

[0007]

1 is a block diagram showing the configuration of a CAD device for designing an integrated circuit layout pattern according to an embodiment of the present invention. In FIG. 1, reference numeral 1 is a library file for managing a plurality of integrated circuit layout pattern data (cell data) having a hierarchical structure by attaching, 2 is a cell data file attached to the library file 1, and 3 is a plurality attached to the cell data file 2. However, graphic element data managed in the cell data file 2, 4 is a key (key) number data added in a one-to-one correspondence with the graphic element data 3, and 5 is a state in which the library file 1 can be edited. The library opening means 6 is a cell opening means 6 for copying the cell data file 2 to the editing work area 7 to make it editable. Reference numeral 8 is the cell data file to be edited, which is copied by the cell opening means 6 into the edit work area 7 so that the cell data file 2 can be edited.
Is a graphic element selecting means for putting a plurality of edit target graphic element data 10 included in the edit target cell data file 8 into a selected state for performing work. Reference numeral 11 is a key number acquisition means for acquiring the key number data 12 of the edit target graphic element data 10 selected by the graphic element selection means 9. That is, the key number acquisition means 11 acquires the corresponding key number data when selecting the graphic element data in the cell data. Reference numeral 13 is a graphic element selection confirmation means for confirming whether or not the key number data 12 acquired by the key number acquisition means 11 has the same key number stored in the selected key number storage area 14. Reference numeral 15 is a selected key number storage means for storing the key number data 12 confirmed by the graphic element selection confirmation means 13 that the same key number is not stored in the selected key number storage area 14 for each editing work unit.
Reference numerals 6a and 16b denote key number data stored in the selected key number storage area 15 in the selected key number storage area 14 in units of editing work, and 17 edits the selected graphic element data 10 in the editing work area 7. The graphic element editing means 18 for performing the above operation deselects the selected graphic element 10 and returns it to the edit target state.
4, the graphic element selection canceling means for deleting the key number data stored in the editing work unit in 4, and the editing target cell data 8 in the editing work area 7 is copied onto the library file 1 and replaced with the original cell data 2. A cell closing means for updating the data to bring it to the edit end state, and 20 a library closing means for putting the library file 1 into the edit end state.

FIG. 2 is a flow chart showing an editing work procedure in one embodiment of the present invention. In FIG.
A step S1 is a library open process for bringing the library file 1 for managing a plurality of integrated circuit layout pattern data (cell data) having a hierarchical structure into an editable state, and a step S2 is for editing the cell data attached to the library file 1. Cell open processing to make it possible, step S3 is processing for determining whether or not the same cell data is being edited by another editing operation, and step S4 is cell data being edited by another editing operation (editing work area). Cell opening process for making the inside) editable, step S5 is a graphic element data selection process for making editable the graphic element data managed by being attached to a plurality of cell data, and step S6 is another editing Judgment processing as to whether the same graphic element data in the same cell data is selected by the operation, step S7 A process for issuing a warning that the same graphic element data in the same cell data is currently being edited in another editing operation, step S8 is a graphic element data editing process for editing the graphic element data selected in step S5, Step S9 is a graphic element data selection canceling process of deselecting the graphic element data selected in step S5 and updating the graphic element data after the editing process, step S9.
10 is a process for judging whether or not the editing work is completed with respect to the cell data which is made editable in step S2 or step S4, step S11 is a process for judging whether the editing work is being performed by another editing work, and step S12 is Step S
2. A cell close process for making editable state in 2 and updating cell data edited in step S8 to edit the graphic element data and ending edit processing, and step S5 is step S1.
This is a library close process for performing an edit end process for a library file that has been made editable.

Next, regarding the operation of the embodiment shown in FIG.
This will be described with reference to FIG. In this embodiment, editing work A, B
Simultaneous editing of the same cell data in the two editing operations will be described. In the editing work A, the library file 1 is made editable in step S1 to perform the editing work, the cell data file 2 is made editable in step S2, and the cell data file 2 is copied to the editing work area 7. . In order to edit the graphic element data 10 in the editing work A, the graphic element data 1 is edited in step S5.
0 is selected, and editing work is performed in step S8. At this time, since the graphic element data 10 is being selected in the editing work A in the selected key number storage area 14, the key number data 16 stored in the editing work unit corresponding to the graphic element data 10 exists. .

Next, in order to perform the editing work in the editing work B, in step S1, the library file 1
Is made editable, and the cell data file 2 being edited in the editing work A is made editable in step S2. At this time, since the cell data file 2 being edited in the editing work A is opened in step S3,
The cell open process of step S2 in the edit work B is the open process of the edit target cell data file 8 in the edit work area 7 of step S4.

Next, the editing work B selects the graphic element data to be edited in step S5. However, since the graphic element data 10 is currently being edited in the editing work A, the editing work B , Step S5, graphic element data 1
If 0 is selected, the graphic element data 1 is added to the selected key number storage area 14 by the editing work A in steps S6 and S7.
Since the key number data 16a of 0 exists, "Edit work A
Then, the warning message "The graphic element data 10 is being edited." Is output and the edit work B is informed that only other graphic element data can be edited. So editing work B
In step S5, the graphic element data 10a that has not been edited in the editing operation A is selected, and the editing operation is performed in step S8. At this time, like the editing work A, since the graphic element data 10a is being selected in the editing work B in the selected key number storage area 14, it is stored in the editing work unit corresponding to the graphic element data 10a. There is the key number data 16a that has been created.

When the editing work B finishes the editing work of the graphic element data 10a, the selected graphic element data 10a is deselected in step S9, and the graphic element data after the editing process is updated. At this time, at the same time, the key number data 16a stored in the unit of editing work in the selected key number storage area 14 is deleted so that the graphic element data 10a can be the object of editing by another editing work. Step S1
At 0, it is judged whether the editing work B is all editing work or completed. If there is still unedited graphic element data, go to step S5. If editing work is completed, go to step S11. Transfer processing. At step S11, since the editing work A is currently being edited, the editing work B performs the editing end process on the library file 1 at step S13.

When the editing work A is completed, the editing work A, similarly to the editing work B, determines the graphic element data selection canceling process in step S9 and the completion of the editing work in step S10, and moves the process to step S11. .. Step S11
Then, at this point, the editing work B is the cell data file 2
It is recognized that the editing work A has been completed, and it is determined that the editing work A is the final editing work of the cell data file 2 of the same hierarchical level, and in step S12, the editing work area 7 is edited. The edited edit target cell data file 8 is replaced with the cell data file 2 on the library file 1, and the edited cell data is updated and the edit end process is performed, and the library file 1 of the edit work A is processed in step S13. Edit end processing of.

[0014]

As described above, according to the present invention, the key number data corresponding to the graphic element data in the cell data on a one-to-one basis is obtained, and the corresponding key number data is acquired when the graphic element data is selected. Key number acquisition means, selected key number storage means for storing and managing the acquired key number data in editing work units, and checking whether the stored key number data is used in other editing work. It is configured to have a graphic element selection confirmation means that confirms and allows self-editing work when it is not used, and disables self-editing work when it is used. According to the editing work, it is possible to edit in each graphic element data unit for each editing work, so that multiple people can edit the cell data of the same hierarchical level,
The effect that the editing work efficiency is improved can be obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a CAD device for designing an integrated circuit layout pattern according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a work procedure in this embodiment.

FIG. 3 CA for conventional integrated circuit layout pattern design
It is a flow chart which shows the work procedure in D device.

[Explanation of symbols]

 11 Key Number Acquisition Means 13 Graphic Element Selection Confirmation Means 15 Selected Key Number Storage Means

Claims (1)

[Claims] 1. A CAD device for designing an integrated circuit layout pattern, which edits cell data indicating a layout pattern of an integrated circuit to design an integrated circuit layout pattern, and has a one-to-one correspondence with graphic element data in the cell data. Key number acquisition means having key number data for acquiring the corresponding key number data when selecting the graphic element data, and selected key number storage means for storing and managing the acquired key number data in editing work units, Check if the stored key number data is not used in other editing work, and if it is not used, the self-editing work is allowed, and if it is used, the self-editing work is prohibited. A CAD device for designing an integrated circuit layout pattern, comprising: an element selection confirmation means.