Navigation for MPEG streams
US7139470B2 · kind B2 · utility
13Cited by
7References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2001 |
| Grant date | Nov 21, 2006 |
| Priority date | — |
| Expiry date | Oct 11, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/8205
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Navigation information can be generated from compressed and packetized MPEG streams, and the navigation information then placed in a separate navigation file that can be accessed to permit navigation functions to be performed during decompression and playback of the MPEG stream. An authoring tool may be used to parse the MPEG stream and generate the navigation data. The navigation data may then be used to select individual start points, different audio channels, special effects, etc., during playback.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.