Roll-back during regeneration on a computer-aided design system
US5850535A · kind A · utility
35Cited by
7References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 12, 1995 |
| Grant date | Dec 15, 1998 |
| Priority date | — |
| Expiry date | Oct 12, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T17/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus that keeps information on all entities that are created when a model is built in a CAD system, including an indication of which command causes each entity to be added to or taken from the model. From this information, the system can determine the state of the model at any given time during its creation, without having to regenerate commands that generated the model at the determined state. For each new command, only those entities that are newly created are added to the database. The entities each have a version field that allows the same data to relate to different versions of the model.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.