Assessing quality of service using digital watermark information
US8130811B2 · kind B2 · utility
8Cited by
39References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2010 |
| Grant date | Mar 6, 2012 |
| Priority date | — |
| Expiry date | Jan 22, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8358
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The disclosure details methods of measuring the quality of service of received media signals by analyzing digital watermarks embedded in such signals. The quality of a received video or audio signal can thereby be assessed without having the original version of the signal before transmission. Instead, the strength or quality of the embedded digital watermark is analyzed to determine the quality of the received signal. The degradation of a watermark signal is used to assess quality of service of signals, such as audio and video. Several other features and arrangements are also detailed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.