3:2 Pull-down detection
US7203238B2 · kind B2 · utility
19Cited by
9References
25Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 11, 2001 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Jul 21, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/145
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a 3:2 pull-down detection component of a video encoder uses motion vectors to determine whether a repeated field exists in a video sequence. The 3:2 pull-down detection component uses field motion vectors determined by a motion estimator and compares the field motion vectors to a threshold to determine whether a repeated field exists. If a repeated field exists, a video encoder can then eliminate the repeated field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.