Video encoder with adjustable intra-refresh rate
US9955158B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2016 |
| Grant date | Apr 24, 2018 |
| Priority date | — |
| Expiry date | Jan 12, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/176
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An encoding system for converting video data to a media stream based on a given intra-refresh rate includes an encoder for encoding the video data to frames based on the given intra-refresh rate, a decoder for reconstructing the encoded frames, and an evaluation unit for scoring macro blocks (MBs) of a current frame being decoded. A score of an intra-MB is defined as a predetermined value, and a score of an inter-MB is generated based on the scores of MBs of previous frames. A controller determines an actual refresh period based on a qualified frame identified based on the scores of the MBs of at least the current frame, and adjusts the given intra-refresh rate based on the actual refresh period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.