Audio frequency shifting during video trick modes
US7889969B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2002 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | Sep 29, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/8063
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention concerns a method and apparatus for audio content playback during fast forward playback video trick modes. A storage medium reader is provided for reading coded digital data from a storage medium such as a DVD. The coded digital data comprises a video programming and a corresponding audio programming. A decoder decodes from a portion of the digital data comprising the audio programming a plurality of digital audio samples corresponding to a selected portion of the video programming. Subsequently, an audio processor key shifts a playback audio pitch associated with the audio samples to compensate for the higher pitched audio associated with the fast forward video playback mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.