Enhancement decoder for video signals with multi-level enhancement and coding format adjustment
US11653034B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2019 |
| Grant date | May 16, 2023 |
| Priority date | — |
| Expiry date | Oct 9, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/234327
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An enhancement decoder for video signals, comprising an interface to receive a first video stream (1150) using a first signal element coding format from a standard decoder, an interface to receive an enhancement data stream and a de-multiplexer (200) to decompose the enhancement data stream into a first set of enhancement data, a second set of enhancement data and a range data. A first decoder video stream derived from the first video stream at a first resolution is enhanced by a first enhancer using the first set of enhancement data. A second decoder video stream derived from an output of the first enhancer is converted by an up-sampler to a second resolution. The second resolution being higher than the first resolution. A third decoder video stream derived from an output of the up-sampler at the second resolution is enhanced by a second enhancer using the second set of enhancement data. A coding format adjustment module converts one of the first to third decoder video streams from a first signal element coding format to a second signal element coding format using the range data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.