Method and apparatus for detecting the motion of image in a television signal
US4760446A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1987 |
| Grant date | Jul 26, 1988 |
| Priority date | — |
| Expiry date | Sep 29, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/0152
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for detecting the motion of image in a television signal is intended for a decoder of a multiple subsampling transmission signal without an interframe aliased portion in a lower frequency region. In the method and apparatus for detecting the motion, a next-adjacent interframe difference signal, an immediate-adjacent interframe difference narrow-band signal and an immediate-adjacent interframe difference broad-band signal or compensated versions of these signals are combined with maximum-value selection circuits and a minimum-value selection circuit for selecting the maximum-value and minimum-value among these three sets of signals so that a proper motion signal is extracted from the transmission signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.