Digital television standards conversion
US5255091A · kind A · utility
37Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1991 |
| Grant date | Oct 19, 1993 |
| Priority date | — |
| Expiry date | Aug 19, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Film originating NTSC video signals are converted to the standard by a process which detects and eliminates duplicate fields. Video frames corresponding one-for-one with the original film frames are line interpolated to provide a signal with minimal artefacts. Edits are detected and steps taken to avoid interpolations across a cut.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.