Computer-aided design system and methods thereof for merging design constraint files across operational modes
US8775989B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2011 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Jul 8, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2119/12
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In the field of integrated circuit (IC) design it is common to use a plurality of design constraints files to provide the appropriate operational mode when checking the design. Designers typically use the Synopsis® design constraint (SDC) format to describe the constraints in each operational mode. Each time an operational mode is tested a corresponding SDC is used. By merging a plurality of SDCs into a single most pessimistic SDC, designers are able to ensure that the device will properly operate in all the defined operational modes. Only a single run of the merged SDC in the hypothetical mode is required thereby saving time as well as avoiding potential errors from conflicting constraints in different operational modes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.