Lip sync error detection and correction
US10045016B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2017 |
| Grant date | Aug 7, 2018 |
| Priority date | — |
| Expiry date | Feb 7, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/43072
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of managing lip synchronization error in a multimedia content delivery network includes identifying a video packet and an audio packet associated with the video packet and determining a synchronization offset between the audio and video packets at a first monitoring point in the network. The audio and video packets are then detected at a second monitoring point in the network and a second synchronization offset is determined. When a delta between the first synchronization offset and the second synchronization offset exceeds a threshold, lip synchronization error information may be automatically recorded and/or reported to a service provider and corrective action may be taken if potential sources of the lip synchronization error are within the domain of the service provider. The video packet may be identified by a timestamp within the packet and the audio packet may be identified by audio data within the audio packet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.