Separate video file for I-frame and non-I-frame data to improve disk performance in trick play
US8855466B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 1, 2012 |
| Grant date | Oct 7, 2014 |
| Priority date | — |
| Expiry date | May 1, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/85406
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device has an input circuit to receive a stream of video data, which includes intra-frames (I-frames) and inter-frames. A video frame parser separates the I-frames and inter-frames from the stream of video data. A memory device has a file system thereon, and a processor is configured to process the video data. The processor stores the I-frames in an I-frame file in a contiguous memory region of the memory device and stores the inter-frames in an inter-frame file of the memory device. The processor also stores an index file, which includes information to coordinate a pre-parsed position of each I-frame with at least one adjacent inter-frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.