Systems and methods for detecting audio-video synchronization using timestamps
US10158927B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2012 |
| Grant date | Dec 18, 2018 |
| Priority date | — |
| Expiry date | Apr 21, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/2368
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems and techniques for testing audio-video synchronization using one or more timestamps are presented. On a media sender end, a media stream with a video stream and an audio stream is generated. A matrix barcode timestamp is added onto a video frame of the video stream at a particular time. Furthermore, a tone timestamp is embedded into the audio stream at the particular time. Additionally, on a media receiver end, a modified media stream is received. For example, the video stream with the matrix barcode timestamp at the particular time and the audio stream with the tone timestamp at the particular time are received. The matrix barcode timestamp is decoded to determine a first time value and the tone timestamp is decoded to determine a second time value. The first time value is compared with the second time value to determine synchronization of the video stream and the audio stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.