Assessing quality of service using digital watermark information
US7656930B2 · kind B2 · utility
29Cited by
32References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2007 |
| Grant date | Feb 2, 2010 |
| Priority date | — |
| Expiry date | Oct 2, 2027 |
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.