Method and apparatus for video signal encoding with motion compensation
US4218704A · kind A · utility
19Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1979 |
| Grant date | Aug 19, 1980 |
| Priority date | — |
| Expiry date | Mar 16, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/51
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A motion compensated video encoder includes apparatus (100) for recursively updating an estimate of displacement in the moving area of a picture, and for predicting the intensity values of elements of the picture using the displacement estimate. Address information is encoded for background (non-moving) elements and for moving elements for which the motion compensated prediction errors are satisfactorily small. For uncompensable pels, where the error exceeds a threshold, both address information and error values are encoded. The displacement estimate can also be encoded, if desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.