Synchronization with synthesized audio clock
US10979757B2 · kind B2 · utility
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1References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2016 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | Aug 10, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/43637
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention provides a method for providing a synchronization in a computer network for synchronized playback of audio an/or video by a plurality of separate devices. Each separate device generates a virtual clock in response to a timing of the audio codec of a received audio stream. Especially, segmented time is used as reference time. 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 extrapolated 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.