Seek with thumbnail generation and display during placeshifting session
US11089373B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2017 |
| Grant date | Aug 10, 2021 |
| Priority date | — |
| Expiry date | Dec 29, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/6587
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Seek and other trick play functions can be improved in placeshifting and similarly live-encoded video streams. Thumbnail images are derived from I-frames (or similar key frames) of the source video stream rather than from the live-encoded stream. The thumbnail images are tagged to indicate a presentation time stamp (PTS) or similar identification of the source video frame that was used to create the thumbnail image. The tagged thumbnails are provided to the media player, which renders the images to indicate different portions of the video stream as the viewer scans or performs other functions. When the viewer selects to skip to a different part of the video stream, the PTS or similar identifier associated with the presented thumbnail image is sent to the placeshifting encoder to identify the appropriate starting point to resume live encoding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.