Processing signal data using an upsampling adjuster
US11375198B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2018 |
| Grant date | Jun 28, 2022 |
| Priority date | — |
| Expiry date | Dec 6, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/86
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Signal data is processed at an encoder device. A representation of a signal at a first level of quality is obtained. The representation at the first level is upsampled using an upsampler in the encoder device to derive a preliminary representation of the signal at a second, higher level of quality. Adjustment data is derived using the representation at the first level as an input to an upsampling adjuster arranged in parallel with the upsampler in the encoder device. The adjustment data is useable by the encoder device to adjust the preliminary representation. The preliminary representation and the adjustment data are used to derive an adjusted representation of the signal at the second level. Residual data useable by a decoder device is derived, using the adjusted representation, to reconstruct a reference representation of the signal at the second level using the adjusted representation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.