High quality seamless playback for video decoder clients
US9584832B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 10, 2012 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | Jun 15, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/40
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present invention provide techniques for efficiently coding video data during circumstances of network congestion, or instances when a decoder is unable to handle incoming video at the intended frame rate. A video coder may code frames of a video sequence according to motion estimation prediction in which each frame of the video sequence is constrained to be coded as one of an I-frame or a P-frame. The video coder may determine for each coded P-frame, a distance from the respective P-frame and a most-recently coded reference frame, and if the distance matches a predetermined threshold distance, the respective P-frame may be marked as a reference frame. The coded video data of the I-frame(s), the reference P-frames and the non-reference P-frames may be transmitted in a channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.