TV system conversion apparatus
US4663665A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1985 |
| Grant date | May 5, 1987 |
| Priority date | — |
| Expiry date | Dec 30, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/014
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The picture quality deterioration such as judder caused by TV frame number conversion can be mitigated by selecting either the stationary original picture signal or the motion-compensated interpolated picture signal based on the most adaptive motion vector corresponding to the smallest interframe difference between the original picture signal and the motion-compensated picture signals based on the motion vectors individually detected from divisional picture areas. The effect of this mitigation can be increased by weighting the detected motion vectors and by smoothing the contour between motion-compensated picture areas with the aid of filtering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.