Methods and systems for encoding and decoding picture signals and related picture-signal records
US5485279A · kind A · utility
98Cited by
8References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 2, 1993 |
| Grant date | Jan 16, 1996 |
| Priority date | — |
| Expiry date | Jul 2, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/888
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Reproducing an input image of reduced resolution with respect to the vertical and horizontal directions in high picture quality by processing a coded bit stream of normal resolution. A difference signal (mismatching error signal) representing the difference between a predicted image of the normal resolution and a predicted image of a half resolution with respect to the vertical and horizontal directions is coded and the coded difference signal is transmitted. When producing the predicted image, image data is subjected to motion compensation according to a specified prediction mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.