System and method for clock drift correction for broadcast audio/video streaming
US7620137B2 · kind B2 · utility
7Cited by
6References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2004 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | Mar 27, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/44004
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A clock rate used in rendering broadcast streaming audio/video data is adjusted to converge on a clock rate associated with broadcasting the streaming data. The clock rate is adjusted by monitoring the buffer depth associated with a receive buffer that stores the incoming streaming data. The buffer depth provides an estimate of clock drift between the two clock rates. From the estimate of clock drift, the clock rate used in rendering broadcast streaming data is adjusted to avoid the clock drift causing skips or pauses in the rendered audio/video data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.