Measuring quality of service of broadcast multimedia signals using digital watermark analyses
US7277468B2 · kind B2 · utility
71Cited by
27References
17Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 10, 2001 |
| Grant date | Oct 2, 2007 |
| Priority date | — |
| Expiry date | Jun 19, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/329
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The disclosure details a method of measuring the quality of service of broadcast media signals by analyzing digital watermarks embedded in the received broadcast signal. This method enables the quality of the broadcast video or audio signal to be measured without having the original version of the signal before broadcast transmission. Instead, the method analyzes the strength or quality of the embedded digital watermark to determine the quality of the received broadcast signal. The degradation of a watermark signal is used to measure quality of service of broadcast signals, such as audio and video.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.