Video capture from multiple sources
US8625032B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2011 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Dec 14, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/268
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for capturing video frames from a plurality of video channels is provided. A list of a least two descriptors is formed for each of the plurality of video channels in a memory accessible to a direct memory access (DMA) engine, wherein each of the two or more descriptors for each channel is programmed to define a storage location for a sequential frame of video data for the channel. A sequence of video frames is received from the plurality of video channels, wherein for each channel, video frames are received at a frame rate for that channel. A DMA engine uses descriptors from the list to store video frames as they are received. The list is updated periodically to replace used descriptors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.