Architecture for signal enhancement coding
US12212781B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2019 |
| Grant date | Jan 28, 2025 |
| Priority date | — |
| Expiry date | Aug 1, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/93
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is disclosed a method of encoding an input signal, the method comprising producing a base encoded signal by feeding an encoder with a down-sampled version of an input signal. The method further comprising producing a first quantised residual signal by: decoding the base encoded signal to produce a base decoded signal; and using a difference between the base decoded signal and the down-sampled version of the input signal to produce a first residual signal; quantising the first residual signal to produce the first quantised residual signal. The method further comprises producing a second residual signal by: de-quantising the first quantised residual signal to produce a reconstructed version of the first residual signal; correcting the base decoded signal using the first reconstructed version of the residual signal to create a corrected decoded version; upsampling the corrected decoded version; and using a difference between the corrected decoded signal and the input signal to produce the second residual signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.