Tracking the validity of cache frames in digital movie editing
US7103839B1 · kind B1 · utility
14Cited by
8References
50Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2000 |
| Grant date | Sep 5, 2006 |
| Priority date | — |
| Expiry date | Aug 22, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B27/034
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus, including computer program products, implementing and using techniques for determining validity of cached frames of a compositing hierarchy as a composition tree of a digital video composition is edited. The techniques use interval lists associated with nodes in a compositing tree to determine which cached frames of a composition hierarchy are guaranteed to be valid in the face of arbitrary edits to the hierarchy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.