Timeline correlation between multiple timeline-altered media streams
US6415326B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1998 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Sep 15, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8547
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A network client such as a streaming multimedia player is provided with the capability of changing playback speeds of a multimedia data stream. To change the playback speed, the client requests a different media stream. The client then initiates the new media stream at a point that corresponds in content to the point in the original data stream at which the speed change was requested. To determine the appropriate presentation time in the new media stream, the client refers to a first set of mappings, that maps presentation times in the original media stream to time-correlated presentation times in a primary or reference media stream. The client then refers to a second set of mappings, associated with the primary reference stream, to determine a time-correlated presentation time in the new media stream. The client then initiates playback of the new media stream at the determined presentation time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.