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1. 发明申请

WO2011151178A1 PROVIDING A WATERMARKED DECODED AUDIO OR VIDEO SIGNAL DERIVED FROM A WATERMARKED AUDIO OR VIDEO SIGNAL THAT WAS LOW BIT RATE ENCODED AND DECODED 审中-公开
标题翻译：提供WATERMARKED解码的音频或视频信号从水印的音频或视频信号中获取低码率编码和解码
公开(公告)号：WO2011151178A1
公开(公告)日：2011-12-08
申请号：PCT/EP2011/058037
申请日：2011-05-18
申请人： THOMSON LICENSING , GRIES, Ulrich , BAUM, Peter, Georg , ARNOLD, Michael , VOESSING, Walter
发明人： GRIES, Ulrich , BAUM, Peter, Georg , ARNOLD, Michael , VOESSING, Walter
IPC分类号： G06T1/00 , G10L19/00 , H04L9/18
CPC分类号： G06T1/005 , G10L19/018 , H04L2209/608
摘要： Various audio signal watermarking systems are known, which are also applied to digitally encoded audio signals. However, in current audio signal watermarking systems the watermark signal and its watermark payload do not survive very low bit rate audio coding, in particular parametric coding. According to the invention, a watermarked uncompressed audio signal bitstream is low-bit rate compressed, but the water- marking is removed and the watermark's payload only is transmitted together with the compressed audio signal bit- stream. At decoder side, the received audio signal bit stream is de-compressed and watermarked again using the transmitted watermark payload. Advantageously, it does not matter that the compressed bitstream is not watermarked because the compressed bitstream can be encrypted prior to transmission.
摘要翻译：各种音频信号水印系统是已知的，其也被应用于数字编码的音频信号。然而，在当前音频信号水印系统中，水印信号及其水印有效载荷不能承受非常低的比特率音频编码，特别是参数编码。根据本发明，水印的未压缩音频信号比特流是低比特率压缩的，但水印被去除，水印的有效载荷仅与压缩音频信号比特流一起传输。在解码器侧，使用发送的水印有效载荷对接收到的音频信号比特流进行解压缩和加水印。有利地，由于压缩比特流可以在传输之前被加密，因此压缩的比特流不加水印并不重要。

2. 发明申请

WO2011141292A1 METHOD AND APPARATUS FOR DETECTING WHICH ONE OF SYMBOLS OF WATERMARK DATA IS EMBEDDED IN A RECEIVED SIGNAL 审中-公开
标题翻译：用于检测水印数据符号的接收信号中嵌入的方法和装置
公开(公告)号：WO2011141292A1
公开(公告)日：2011-11-17
申请号：PCT/EP2011/056652
申请日：2011-04-27
申请人： THOMSON LICENSING , CHEN, Xiao-Ming , BAUM, Peter, Georg , ARNOLD, Michael , GRIES, Ulrich
发明人： CHEN, Xiao-Ming , BAUM, Peter, Georg , ARNOLD, Michael , GRIES, Ulrich
IPC分类号： G10L19/00 , G06T1/00
CPC分类号： G10L19/018
摘要： Watermark symbol detection requires a detection metric for deciding at decoder side which candidate symbol is embedded inside the audio or video signal content. The invention provides an improved detection metric processing that achieves a reliable detection of watermarks in the presence of additional noise and echoes, and that is adaptive to signal reception conditions and requires a decreased computational power. This is performed by taking into account the information contained in the echoes of the received audio signal in the decision metric and comparing it with the corresponding metric obtained from decoding a non-marked audio signal, based on recursive calculation of false positive detection rates of peaks in correlation result values. The watermark symbol corresponding to the reference sequence having the lowest false positive error is selected as the embedded one.
摘要翻译：水印符号检测需要用于在解码器侧确定哪个候选符号被嵌入在音频或视频信号内容内的检测度量。本发明提供了一种改进的检测度量处理，其在附加噪声和回波的存在下实现水印的可靠检测，并且其适应于信号接收条件并且需要降低的计算能力。这是通过考虑包含在决定度量中的接收到的音频信号的回波中的信息来进行的，并将其与从解码未标记音频信号获得的相应度量进行比较，基于递归计算峰值的假阳性检测率相关结果值。选择与具有最低假正误差的参考序列相对应的水印符号作为嵌入的。

3. 发明申请

WO2007031423A1 BLIND WATERMARKING OF AUDIO SIGNALS BY USING PHASE MODIFICATIONS 审中-公开
标题翻译：通过使用相位修改对音频信号进行BLIND WATERMARKING
公开(公告)号：WO2007031423A1
公开(公告)日：2007-03-22
申请号：PCT/EP2006/065973
申请日：2006-09-04
申请人： THOMSON LICENSING , VOESSING, Walter , BAUM, Peter, Georg
发明人： VOESSING, Walter , BAUM, Peter, Georg
IPC分类号： G10L19/00
CPC分类号： G10L19/018
摘要： Watermarking of audio signals intends to manipulate the audio signal in a way that the changes in the audio content cannot be recognised by the human auditory system. In order to reduce the audibility of the watermark and to improve the robustness of the watermarking the invention uses phase modification of the audio signal. In the frequency domain, the phase of the audio signal is manipulated by the phase of a reference phase sequence, followed by transform into time domain. Because a change of the audio signal phase over the whole frequency range can be audible, the phase manipulation is carried out with a maximum amount only within one or more small frequency ranges which are located in the higher frequencies and/or in noisy audio signal sections, according to psycho-acoustic principles. Preferably, the allowable amplitude of the phase changes in the remaining frequency ranges is controlled according to psycho-acoustic principles. The watermark is decoded from the watermarked audio signal by correlating it with corresponding inversely transformed candidate reference phase sequences.
摘要翻译：音频信号的水印功能旨在以音频内容的变化不能被人类听觉系统识别的方式操纵音频信号。为了降低水印的可听性并提高水印的鲁棒性，本发明使用音频信号的相位修改。在频域中，音频信号的相位由参考相位序列的相位来操纵，随后变换成时域。因为整个频率范围内的音频信号相位的改变可以是可听见的，所以相位操作仅在位于较高频率和/或噪声音频信号部分的一个或多个小的频率范围内以最大量进行，根据心理原理。优选地，根据心理声学原理来控制剩余频率范围内相位变化的允许振幅。通过将水印与相应的逆变换候选参考相序相关联，从加水印的音频信号中解码水印。

4. 发明申请

WO2007068609A1 DECODING WATERMARK INFORMATION ITEMS OF A WATERMARKED AUDIO OR VIDEO SIGNAL USING CORRELATION 审中-公开
标题翻译：使用相关性解码水印音频或视频信号的水印信息项目
公开(公告)号：WO2007068609A1
公开(公告)日：2007-06-21
申请号：PCT/EP2006/069214
申请日：2006-12-01
申请人： THOMSON LICENSING , BAUM, Peter, Georg , VOESSING, Walter
发明人： BAUM, Peter, Georg , VOESSING, Walter
IPC分类号： G06T1/00
CPC分类号： G06T1/0071 , G06T1/005 , G06T2201/0052 , G06T2201/0065
摘要： Watermark information consists of several data symbols which are embedded continuously in an audio or a video signal using modulation with a pseudo-random sequence if spread spectrum technology is used. At decoder site the watermark information is regained using correlation of the received signal with a candidate pseudo-random sequence. Such correlation can be performed by one-dimensional real-symmetric fast Fourier transform of the two input signal vectors, which each consist of a section of N values of the input signal, to which section N-1 zeroes are attached, by multiplying one of the transformed vectors by the conjugated version of the other transformed vector, followed by inverse RFFT transform of that frequency domain product vector. However, if the level of a spread-spectrum watermark is too low or if too much noise had been added during the transmission of the audio or video signals, the correlation does not show a clear peak, which means that the watermark information bits cannot be recovered. According to the invention, the correlation result is improved by setting to zero in the frequency domain frequency bins of the vector which do not have a positive impact on the correlation peak at location zero, i.e. which frequency bins do not contribute to that peak. Thereby the noise level in the correlation or matched filter output is reduced and the watermark information items can be recovered or decoded correctly from the received watermarked audio or video signal.
摘要翻译：如果使用扩展频谱技术，水印信息由若干数据符号组成，这些数据符号连续地嵌入音频或视频信号中，使用具有伪随机序列的调制。在解码器站点，使用接收信号与候选伪随机序列的相关来重新获得水印信息。这样的相关可以通过两个输入信号向量的一维实对称快速傅里叶变换来执行，每个输入信号矢量各自由输入信号的N个值的一部分组成，其中N-1个零被附加到，通过将通过其他转化载体的共轭形式的变换向量，随后对该频域乘积向量进行逆RFFT变换。然而，如果扩频水印的水平太低或在传输音频或视频信号时噪声过大，则相关性不会显示清晰的峰值，这意味着水印信息位不能恢复。根据本发明，通过在对位置零上的相关峰值没有积极影响的矢量的频域频率仓中设定为零，即哪个频率频带对该峰值没有贡献，相关结果得到改善。从而降低了相关或匹配滤波器输出中的噪声电平，并且可以从接收到的带有水印的音频或视频信号中正确地恢复或解码水印信息项。

5. 发明申请

WO2005059913A1 METHOD AND APPARATUS FOR TRANSMITTING WATERMARK DATA BITS USING A SPREAD SPECTRUM, AND FOR REGAINING WATERMARK DATA BITS EMBEDDED IN A SPREAD SPECTRUM 审中-公开
标题翻译：使用传播频谱传输水印数据位的方法和装置，以及用于注册在传播频谱中嵌入的水印数据位
公开(公告)号：WO2005059913A1
公开(公告)日：2005-06-30
申请号：PCT/EP2004/010222
申请日：2004-09-13
申请人： THOMSON LICENSING S.A. , BAUM, Peter, Georg , VOESSING, Walter
发明人： BAUM, Peter, Georg , VOESSING, Walter
IPC分类号： G11B20/00
CPC分类号： H04H20/31 , G10L19/018 , G11B20/00891 , H04H2201/50
摘要： Spread spectrum technology and the related inserted or added information signal can be used for implementing watermarking digital audio signals. A known processing for retrieving at receiver or decoder side the watermark signal information bit from the spread spectrum is convolving the received or replayed spectrum with a spreading function that is time-inverse with respect to the original spreading function. If BPSK modulation was used for applying the spread spectrum function, the output is a peak at the middle of the sequence of correlation values, the sign of such peak representing the value of the desired watermark signal information bit. According to the invention, in order to cope with echo dis-tortions, two or more orthogonal spreading sequences are used at encoder side with the original or encoded audio sig-nal in baseband. When applying the corresponding time-inverse orthogonal spreading sequences at decoder side, ech-oes that are longer than each one of spreading sequence's lengths can be fully removed. The spreading sequences ap-plied can be modified at decoder side according to estimated echo delay values.
摘要翻译：扩展频谱技术和相关的插入或添加信息信号可用于实现水印数字音频信号。在接收机或解码器侧检索来自扩频的水印信号信息比特的已知处理是用接收或重放的频谱与相对于原始扩展函数的时间反相的扩展函数进行卷积。如果使用BPSK调制来应用扩频函数，则输出是相关值序列中间的峰值，这种峰值的符号表示所需水印信号信息位的值。根据本发明，为了应对回声失真，在编码器侧使用两个或多个正交扩频序列，其中基带中的原始或编码音频信号。当在解码器侧应用相应的时间 - 反相正交扩展序列时，可以完全去除比扩展序列长度中的每一个长的长度的ech-oes。可以根据估计的回波延迟值在解码器侧修改所应用的扩展序列。

6. 发明申请

WO2005059912A1 METHOD AND APPARATUS FOR TRANSMITTING WATERMARK DATA BITS USING A SPREAD SPECTRUM, AND FOR REGAINING WATERMARK DATA BITS EMBEDDED IN A SPREAD SPECTRUM 审中-公开
标题翻译：使用传播频谱传输水印数据位的方法和装置，以及用于注册在传播频谱中嵌入的水印数据位
公开(公告)号：WO2005059912A1
公开(公告)日：2005-06-30
申请号：PCT/EP2004/010221
申请日：2004-09-13
申请人： THOMSON LICENSING S.A. , BAUM, Peter, Georg , VOESSING, Walter
发明人： BAUM, Peter, Georg , VOESSING, Walter
IPC分类号： G11B20/00
CPC分类号： H04H20/31 , G10L19/018 , G11B20/00891 , H04H2201/50
摘要： Spread spectrum technology and the related inserted or added information signal can be used for implementing watermarking digital audio signals. A known processing for retrieving at receiver or decoder side the watermark signal information bit from the spread spectrum is convolving the received or replayed spectrum with a spreading function that is time-inverse with respect to the original spreading function. The pseudo noise sequences are modulated one or more carrier frequencies which are inserted at one or more frequency bands into the spectrum of an audio signal. The watermark signal decoder checks the frequency bands occupied by such carriers. According to the invention, the frequency band oc-cupation information is signalled in advance, i.e. is trans-mitted already together with the frame data for the current frame, such that the watermark signal decoder knows before processing the following audio signal frame which carrier frequency or frequencies are occupied and must be used for the corresponding carrier demodulation, and which carrier frequencies need not be checked and demodulated.
摘要翻译：扩展频谱技术和相关的插入或添加信息信号可用于实现水印数字音频信号。在接收机或解码器侧检索来自扩频的水印信号信息比特的已知处理是用接收或重放的频谱与相对于原始扩展函数的时间反相的扩展函数进行卷积。伪噪声序列被调制为在一个或多个频带插入到音频信号的频谱中的一个或多个载波频率。水印信号解码器检查这些载波占据的频带。根据本发明，频带信号信号被预先通知，即已经与当前帧的帧数据一起发送，使得水印信号解码器在处理以下音频信号帧之前知道哪个载波频率或频率被占用，并且必须用于相应的载波解调，哪些载波频率不需要检查和解调。

7. 发明申请

WO2006128769A2 METHOD AND APPARATUS FOR WATERMARKING AN AUDIO OR VIDEO SIGNAL WITH WATERMARK DATA USING A SPREAD SPECTRUM 审中-公开
标题翻译：使用扩展频谱用水印数据水印音频或视频信号的方法和装置
公开(公告)号：WO2006128769A2
公开(公告)日：2006-12-07
申请号：PCT/EP2006/062001
申请日：2006-05-03
申请人： THOMSON LICENSING , BAUM, Peter, Georg , VOESSING, Walter
发明人： BAUM, Peter, Georg , VOESSING, Walter
IPC分类号： G10L19/00 , G06T1/00
CPC分类号： G10L19/018 , G06T1/0028 , G06T1/005 , G06T2201/0065 , G06T2201/0202
摘要： Watermark information (denoted WM) consists of several symbols which are embedded continuously in an audio or a video signal using spread-spectrum. At decoder site the WM is regained using correlation of the received signal with an resequence. According to the invention, not only is the watermark made audio or video signal level dependent (PAS), but also the spreading sequence used for the watermark is made audio or video signal level dependent. This means that the same WM symbol is encoded by several different spreading sequences (NSS). The encoder tests (DEC), which one of these WM symbols or sequences can be retrieved best in a decoder, and embeds that selected spreading sequence WM in the audio or video signal to be watermarked. At decoder side all candidate WM spreading sequences are correlated with the received signal and the spreading sequence with the best match is chosen as the correct one.
摘要翻译：水印信息（表示为WM）包括使用扩展频谱连续嵌入音频或视频信号的几个符号。在解码器站点，使用接收信号与序列的相关性来重新获得WM。根据本发明，不仅水印使音频或视频信号电平依赖（PAS），而且使用于水印的扩展序列使得音频或视频信号水平相关。这意味着相同的WM符号由几种不同的扩展序列（NSS）编码。编码器测试（DEC），这些WM符号或序列中的哪一个可以在解码器中最佳地检索，并将所选择的扩展序列WM嵌入到要加水印的音频或视频信号中。在解码器侧，所有候选WM扩展序列与接收信号相关，并且选择具有最佳匹配的扩展序列作为正确的。

8. 发明申请

WO2007107455A1 METHOD AND APPARATUS FOR CORRELATING TWO DATA SECTIONS 审中-公开
标题翻译：用于相关两个数据部分的方法和装置
公开(公告)号：WO2007107455A1
公开(公告)日：2007-09-27
申请号：PCT/EP2007/052179
申请日：2007-03-08
申请人： DEUTSCHE THOMSON OHG , BAUM, Peter, Georg , VOESSING, Walter , ARNOLD, Michael
发明人： BAUM, Peter, Georg , VOESSING, Walter , ARNOLD, Michael
IPC分类号： G11B20/00 , G10L19/00 , G10L11/04
CPC分类号： G11B20/00086 , G10L19/018
摘要： Watermarking of audio signals intends to manipulate the au- dio signal in a way that the changes in the audio content cannot be recognised by the human auditory system. The watermark data are decoded from the received watermarked audio signal by correlation with corresponding candidate reference sequences. One or more of the sync symbols (S1, S2, S3) are embedded twice in the watermark data frame in the encoder. Thereafter a circular correlation is calculated instead of a standard correlation.
摘要翻译：音频信号的水印功能旨在以音频内容的变化不能被人类听觉系统识别的方式来操纵自动信号。通过与相应的候选参考序列相关，从接收到的加水印音频信号中解码水印数据。一个或多个同步符号（S1，S2，S3）在编码器的水印数据帧中嵌入两次。此后，计算循环相关，而不是标准相关。

9. 发明申请

WO2008028770A1 METHOD AND APPARATUS FOR ENCODING/DECODING SYMBOLS CARRYING PAYLOAD DATA FOR WATERMARKING OF AN AUDIO OR VIDEO SIGNAL 审中-公开
标题翻译：用于编码/解码携带音频或视频信号水印数据的符号的方法和装置
公开(公告)号：WO2008028770A1
公开(公告)日：2008-03-13
申请号：PCT/EP2007/058472
申请日：2007-08-15
申请人： THOMSON LICENSING , BAUM, Peter, Georg , SCHREIBER, Ulrich
发明人： BAUM, Peter, Georg , SCHREIBER, Ulrich
IPC分类号： G10L19/00
CPC分类号： G10L19/018
摘要： Watermark information (denoted WM) consists of several symbols which are embedded continuously by reference sequence modulation in an audio or a video signal. At decoder site the WM is regained using correlation of the received signal with a corresponding reference sequence. The symbols form watermark data frames. The invention uses for the bit values `zero' and `one' in each payload symbol and for each payload symbol in a watermark data frame different reference sequences, without using synchronisation symbols. A logarithmic search is performed in the WM decoder to reduce the numbers of correlations to be calculated. The invention makes watermarking of critical sound signals much more robust.
摘要翻译：水印信息（表示为WM）包括通过参考序列调制在音频或视频信号中连续嵌入的几个符号。在解码器位置，使用接收信号与相应的参考序列的相关性来重新获得WM。符号形成水印数据帧。在不使用同步符号的情况下，本发明用于每个有效载荷符号中的位值“0”和“1”以及水印数据帧中的每个有效载荷符号不同的参考序列。在WM解码器中执行对数搜索以减少要计算的相关数。本发明使关键声音信号的水印更加鲁棒。

10. 发明申请

WO2004066162A3 CALCULATION OF A MODIFIED DISCRETE COSINE TRANSFORM 审中-公开
公开(公告)号：WO2004066162A3
公开(公告)日：2004-08-05
申请号：PCT/EP2003/014930
申请日：2003-12-29
申请人： THOMSON LICENSING S.A. , BAUM, Peter, Georg
发明人： BAUM, Peter, Georg
IPC分类号： G06F17/14
摘要： The invention relates to performing an MDCT of a digital input signal of length N, wherein by generating a specific ins termediate signal of length N/2 the MDCT can be performed by a number of only N 2 /4 multiplications of data values of the intermediate signal with cosine values.

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