Localized routing direction
US8250514B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2006 |
| Grant date | Aug 21, 2012 |
| Priority date | — |
| Expiry date | Jul 3, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2111/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A routing method for a multilayer circuit design layout that has a set of possible preferred local routing directions and a default preferred routing direction for each layer. The method receives a set of user specified constraints on routing directions for particular regions of the design layout. The method tessellates the available routing space into separate tiles and automatically defines a preferred local routing direction for each tile based on the user specified constraints. The set of user specified constraints includes user designated flows, locked etches, “etch keep-out” areas, user “planned” data, etc. A routing method for a multilayer design layout that receives a first set of user specified preferred routing directions for particular regions of the multilayer design layout. The method tessellates the available routing space into separate tiles and automatically defines a second preferred local routing direction for each tile based on the user specified preferred routing directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.