Hardware optimization of rate calculation in rate distortion optimization for video encoding
US11425393B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2021 |
| Grant date | Aug 23, 2022 |
| Priority date | — |
| Expiry date | Jun 10, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/159
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for calculating token rates for video encoding includes a plurality of different probability lookup tables implemented in hardware, wherein each of the probability lookup tables specifically corresponds to a different prediction mode of a video codec. The system includes an application-specific integrated circuit compute unit. For each candidate prediction mode among the different prediction modes, the application-specific integrated circuit is configured to determine a rate distortion cost (RD Cost) for a video. The application-specific integrated circuit is configured to select one of the plurality of different probability lookup tables that corresponds to the candidate prediction mode and use the selected one of the plurality of different probability lookup tables to calculate a corresponding token rate for the candidate prediction mode. The application-specific integrated circuit is configured to encode the video using a selected one of the different prediction modes determined based on the determined rate distortion costs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.