Preserving synchronized playout of auxiliary audio transmission
US9426335B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2014 |
| Grant date | Aug 23, 2016 |
| Priority date | — |
| Expiry date | Feb 23, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F15/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In one method embodiment, providing a multiplex of compressed versions of a first video stream and a first audio stream, each corresponding to an audiovisual (A/V) program, the first video stream and the first audio stream each corresponding to a first playout rate and un-synchronized with each other for an initial playout portion; and providing a compressed version of a second audio stream, the second audio stream corresponding to a pitch-preserving, second playout rate different than the first playout rate, the second audio stream synchronized to the initial playout portion of the first video stream when the first video stream is played out at the second playout rate, the first audio stream replaceable by the second audio stream for the initial playout portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.