User selectable variable trick mode speed
US6577809B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2002 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | Aug 1, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/8042
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Upon user selection of a particular trick mode, the number of pictures that are displayed can be accordingly adjusted to correspond with the selected trick mode speed based on a determined display time. Subsequently, the bandwidth usage can be can be determined to ensure that the channel capacity between a playback device (100) and a remote decoder (136) has not been exceeded. For forward trick modes, in a case where the bandwidth between the playback device (100) and the remote decoder (136) would be exceeded, B-pictures can be uniformly eliminated throughout the playback segment. Where B-pictures were present and they have been eliminated, they can be replaced by dummy B-pictures. Again, if there is still insufficient bandwidth available between the playback device (100) and remote decoder (136), then P-pictures can be eliminated from the playback segment and uniformly replaced by dummy P-pictures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.