Providing VCR functionality for data-centered video multicast
US6993787B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2000 |
| Grant date | Jan 31, 2006 |
| Priority date | — |
| Expiry date | May 25, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4334
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The client application provides VCR functionality in a data-centered video multicast network (36) through active prefetching of the fragments from broadcast channels. The player (10) has a user interface (12) that supports a plurality of VCR functions (14–26). Plural buffers (32) and their associated loaders (34) download video data under control of a manager module (38). The manager module accesses the playback pointer (40) and employs feasible point calculation module (42) to cause the loaders to selectively download segments so that VCR functions can be supported while maintaining continuous playback after the VCR function is performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.