Accelerated video encoding using a graphics processing unit
US7813570B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2004 |
| Grant date | Oct 12, 2010 |
| Priority date | — |
| Expiry date | Apr 10, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/56
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video encoding system uses both a central processing unit (CPU) and a graphics processing unit (GPU) to perform video encoding. The system implements a technique that enables the GPU to perform motion estimation for video encoding. The technique allows the GPU to perform a motion estimation process in parallel with the video encoding process performed by the CPU. The performance of video encoding using such a system is greatly accelerated as compared to encoding using just the CPU. Also, data related to motion estimation is arranged and provided to the GPU in a way that utilizes the capabilities of the GPU. Data about video frames may be collocated to enable multiple channels of the GPU to process tasks in parallel. The depth buffer of the GPU may be used to consolidate repeated calculations and searching tasks during the motion estimation process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.