Video stream synchronization
US11546651B2 · kind B2 · utility
0Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2021 |
| Grant date | Jan 3, 2023 |
| Priority date | — |
| Expiry date | Mar 8, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/1263
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system clock reference is transmitted to user devices over a short range communication channel and used to calculated a clock offset. The clock offset is stored together with a user identifier in a server memory, from which the clock offset can be retrieved when receiving the user identifier together with a video stream of video frames tagged with respective timestamps. The timestamps are converted into capture times according to a system clock using the retrieved clock offsets. Video streams from multiple user devices thereby have video frames timestamped using a same clock reference and can be time aligned.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.