发明授权
US09214159B2 Watermark signal provider and method for providing a watermark signal
有权
水印信号提供者和提供水印信号的方法
- 专利标题： Watermark signal provider and method for providing a watermark signal
- 专利标题（中）： 水印信号提供者和提供水印信号的方法
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申请号： US13593999申请日： 2012-08-24
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公开(公告)号： US09214159B2公开(公告)日： 2015-12-15
- 发明人: Reinhard Zitzmann , Stefan Wabnik , Joerg Pickel , Bert Greevenbosch , Bernhard Grill , Ernst Eberlein , Giovanni Del Galdo , Stefan Kraegeloh , Tobias Bliem , Juliane Borsum , Marco Breiling
- 申请人： Reinhard Zitzmann , Stefan Wabnik , Joerg Pickel , Bert Greevenbosch , Bernhard Grill , Ernst Eberlein , Giovanni Del Galdo , Stefan Kraegeloh , Tobias Bliem , Juliane Borsum , Marco Breiling
- 申请人地址： DE Munich
- 专利权人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- 当前专利权人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- 当前专利权人地址： DE Munich
- 代理机构： Keating & Bennett, LLP
- 优先权： EP10154948 20100226
- 主分类号： G06F17/00
- IPC分类号： G06F17/00 ; G10L19/018
摘要：
A watermark signal provider comprises a time-frequency-domain waveform provider to provide time-domain waveforms for a plurality of frequency subbands. The time-frequency-domain waveform provider is configured to map a given value of a time-frequency-domain representation onto a bit shaping function, a temporal extension of which is longer than a bit interval, such that there is a temporal overlap between bit shaped functions provided for temporally subsequent values of the time-frequency-domain representation of the same frequency subband. A time-domain waveform of a given frequency subband contains a plurality of bit shaped functions provided for temporally subsequent values of the time-frequency-domain representation. The water mark signal provider further has a time-domain waveform combiner.
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