Latency rate distortion optimisation
US8254443B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 28, 2009 |
| Grant date | Aug 28, 2012 |
| Priority date | — |
| Expiry date | Jan 27, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is provided an improved latency rate distortion optimization apparatus comprising a forward quantize unit (1200) for processing input coefficients (Wij), an inverse quantize unit (1300) coupled to the forward quantize unit (1200), and at least one look-up-table (150) of quantize values for use by the forward (1200) and inverse (1300) quantize units, wherein the at least one look-up-table (150) of quantize values further includes any one or more of the following modified quantize multiplication factors: negative forward quantize multiplication factors (−MF); pre-shifted forward quantize multiplication factors (MFps); negative pre-shifted forward quantize multiplication factors (−MFps); negative inverse quantize multiplication factors (−V); pre-shifted inverse quantize multiplication factors (Vps); or negative pre-shifted inverse quantize multiplication factors (−Vps), and the forward quantize unit (1200) is arranged to operate on the input coefficients (Wij) using one of the modified forward quantize multiplication factors, and the inverse quantize unit (1300) is arranged to operate on the output of the forward quantize unit (1200) using one of the modified inverse quantize mu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.