发明授权
- 专利标题： Assessing quality of service using digital watermark information
- 专利标题（中）： 使用数字水印信息评估服务质量
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申请号： US11866145申请日： 2007-10-02
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公开(公告)号： US07656930B2公开(公告)日： 2010-02-02
- 发明人: Jun Tian , Kenneth L. Levy , Hugh L. Brunk
- 申请人： Jun Tian , Kenneth L. Levy , Hugh L. Brunk
- 申请人地址： US OR Beaverton
- 专利权人： Digimarc Corporation
- 当前专利权人： Digimarc Corporation
- 当前专利权人地址： US OR Beaverton
- 主分类号： H04B1/00
- IPC分类号： H04B1/00 ; H04N7/167
摘要：
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.
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