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US 2006/0190890 A1Published application
Cell instance generating method
OwnerMasahiro Ohashi, Takahiro Kondoinventors
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Abstract
By a hierarchical structure developing process at Step S1, layout pattern data possessing hierarchical structure is developed to flat layout pattern data. An optimizing process at Step S2 generates optimized flat layout pattern data accompanying a new inserted cell. By a hierarchical structure cell instance allotting process at Step S3, optimized flat layout pattern data is generated, in which an instance possessing hierarchical structure is allotted to the new inserted cell.
Claims9
A cell instance generating method comprising:
- developing data of a hierarchically constructed layout pattern into data of cells, thereby generating data of a flat layout pattern including the data of cells;
- optimizing the data of the flat layout pattern, thereby generating data of an optimized flat layout pattern including a newly inserted first cell having an input port and an output port, wherein the input port of the first cell is connected to a second cell of the optimized flat layout pattern, wherein the output port of the first cell is connected to a third cell of the optimized flat layout pattern, and wherein at least one of the second cell and the third cell has a hierarchical structure cell instance indicating a hierarchical structure thereof;
- quoting either of the hierarchical structure cell instance of the second cell or the hierarchical structure cell instance of the third cell, thereby generating a cell instance to be allotted to the first cell;
- and
- allotting the generated cell instance to the first cell.
2 more elements
A cell instance generating method comprising:
- developing data of a hierarchically constructed layout pattern into data of cells, thereby generating data of a flat layout pattern including the data of cells;
- optimizing the data of the flat layout pattern, thereby generating data of an optimized flat layout pattern including a newly inserted first cell group having an input port and an output port, wherein the input port of the first cell group is connected to a second cell group of the optimized flat layout pattern, wherein the output port of the first cell group is connected to a third cell group of the optimized flat layout pattern;
- quoting either of a hierarchical structure cell instance of a cell belonging to the second cell group or a hierarchical structure cell instance of a cell belonging to the third cell group, thereby generating a cell instance to be allotted to a cell belonging to the first cell group;
- and
- allotting the generated cell instance to the cell belonging to the first cell group.
2 more elements
Dependencies are inferred from the claim text.