Cloned and original circuit shape merging
US7120887B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2004 |
| Grant date | Oct 10, 2006 |
| Priority date | — |
| Expiry date | Nov 30, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F30/39
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method, system and program product for merging cloned and original circuit shapes such that a union thereof does not include a notch. The invention determines, for a cell including an original circuit shape and at least one overlapping clone of the original circuit shape, whether each clone corner point of each overlapping clone is within a threshold distance of a corresponding original corner point of the original circuit shape; and generates, in the case that each clone corner point of each overlapping clone circuit shape is within a threshold distance, a union of each overlapping clone and the original circuit shape such that the union does not contain a notch. The union is generated using a point code that sets a new position for a union corner point to remove a notch based on the original shape's direction and the edge orientations previous to and next to the corner point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.