Synchronization in audio playback network independent of system clock
US10679673B2 · kind B2 · utility
6Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2016 |
| Grant date | Jun 9, 2020 |
| Priority date | — |
| Expiry date | Jan 27, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8547
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method is provided for synchronizing playback of audio an/or video by a plurality of separate devices in a computer network. Each separate device generates a virtual clock in response to a timing of the audio codec of a received audio stream. Either the virtual clock is generated directly in response to the tick counter of the audio codec, or by a periodic measurement of the timing of the audio codec interpolated by a monotonic clock. A sample rate converter may be used to slightly adjust the frequency of the virtual clock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.