System and method for in-band A/V timing measurement of serial digital video signals
US8300147B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2010 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Dec 13, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N17/004
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for characterizing the relative offset in time between audio and video signals and enables the receiver of the audio and video signals to resynchronize the audio and video signals. Signal characterization data is dynamically captured and encoded into frames of video and audio data that is output by a television origination facility. The signal characterization data is extracted by the receiver and signal characterization data is captured for the received frames. The extracted signal characterization data is compared with the captured signal characterization data to compute the relative offset in time between the video and one or more audio signals for a frame. The receiver may then resynchronize the video and audio signals using the computed relative offset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.