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1. 发明授权

EP2016583B1 METHOD AND APPARATUS FOR LOSSLESS ENCODING OF A SOURCE SIGNAL, USING A LOSSY ENCODED DATA STREAM AND A LOSSLESS EXTENSION DATA STREAM 有权
标题翻译：方法和设备损失大量的代码源信号，通过损失的污浊编码数据流和损失地段扩展数据流
公开(公告)号：EP2016583B1
公开(公告)日：2012-08-15
申请号：EP07728246.5
申请日：2007-04-18
申请人： Thomson Licensing
发明人： JAX, Peter , KEILER, Florian , WÜBBOLT, Oliver , KORDON, Sven , BÖHM, Johannes
IPC分类号： G10L19/00 , G10L19/14
CPC分类号： G10L19/0017 , G10L19/04 , G10L19/24
摘要： In lossy based lossless coding a PCM audio signal passes through a lossy encoder (101) to a lossy decoder (102). The lossy encoder provides a lossy bit stream (111). The lossy decoder also provides side information (115) that is used to control (105) the coefficients (118) of a prediction filter (106) that de-correlates the difference signal (104) between the PCM signal and the lossy decoder output. The de-correlated difference signal is lossless encoded (108), providing an extension bit stream (121). Instead of, or in addition to, de-correlating in the time domain, a de-correlation in the frequency domain using spectral whitening can be performed. The lossy encoded bit stream together with the lossless encoded extension bit stream form a lossless encoded bitstream. The invention facilitates enhancing a lossy perceptual audio encoding/decoding by an extension that enables mathematically exact reproduction of the original waveform, and provides additional data for reconstructing at decoder site an intermediate-quality audio signal. The lossless extension can be used to extend the widely used mp3 encoding/decoding to lossless encoding/decoding and superior quality mp3 encoding/decoding.

2. 发明授权

EP2016383B1 METHOD AND APPARATUS FOR LOSSLESS ENCODING OF A SOURCE SIGNAL USING A LOSSY ENCODED DATA STREAM AND A LOSSLESS EXTENSION DATA STREAM 失效转让
标题翻译：方法和设备损失大量的代码源信号，通过损失的污浊编码数据流和损失地段扩展数据流
公开(公告)号：EP2016383B1
公开(公告)日：2010-03-03
申请号：EP07728245.7
申请日：2007-04-18
申请人： Thomson Licensing
发明人： BÖHM, Johannes , JAX, Peter , KEILER, Florian , WÜBBOLT, Oliver , KORDON, Sven
IPC分类号： G01L19/00 , G10L19/14
CPC分类号： G10L19/24 , G10L19/0017
摘要： In lossy based lossless coding a PCM audio signal passes through a lossy encoder (41) to a lossy decoder (42). The lossy encoder provides a lossy bit stream. The difference signal (S Diff ) between the PCM signal and the lossy decoder output is lossless encoded (52), providing an extension bit stream. The invention facilitates enhancing a lossy perceptual audio encoding/decoding by an extension that enables mathematically exact reproduction of the original waveform using enhanced de-correlation, and provides additional data for reconstructing at decoder site an intermediate-quality audio signal. The lossless extension can be used to extend the widely used mp3 encoding/decoding to lossless encoding/decoding and superior quality mp3 encoding/de-coding.

3. 发明公开

EP2041743A1 AUDIO BITSTREAM DATA STRUCTURE ARRANGEMENT OF A LOSSY ENCODED SIGNAL TOGETHER WITH LOSSLESS ENCODED EXTENSION DATA FOR SAID SIGNAL 审中-公开
标题翻译：带扩展无损损失污浊的音频流数据结构安排编码信号的编码数据对于信号
公开(公告)号：EP2041743A1
公开(公告)日：2009-04-01
申请号：EP07787114.3
申请日：2007-07-05
申请人： THOMSON Licensing
发明人： WÜBBOLT, Oliver , KEILER, Florian , JAX, Peter , KORDON, Sven , BOEHM, Johannes
IPC分类号： G10L19/00 , G10L19/14
CPC分类号： G10L19/167
摘要： Lossless compression algorithms can only exploit redundancies of the original audio signal to reduce the data rate, but not irrelevancies as identified by psycho-acoustics. Lossless audio coding schemes apply a filter or transform for decorrelation and then encode the transformed signal. The encoded bit stream comprises the parameters of the transform or filter, and the lossless representation of the transformed signal. However, in case of lossy based lossless coding the additional amount of information exceeds the amount of data for the base layer by a multiple of the base layer data amount. Therefore the additional data cannot be packed completely into the base layer data stream e.g. as ancillary data. The at least two data streams resulting from the combination of lossy coding format with a lossless coding extension are the base layer containing the lossy coding information and the enhancement data stream for rebuilding the mathematically lossless original input signal. Furthermore several intermediate quality layers are possible. However, these data streams are not independent from each other. Every higher layer depends on the lower layers and can only be reasonably decoded in combination with these lower layers. According to the invention, a special combination of one-time header information with repeated header information in a block structure is used, which kind of combination depends on the type of application. Assignment information data identify the different parts or layers of the lossless format belonging to one input signal. Synchronisation data are used to combine the different data streams or parts or layers to a single lossless or intermediate output signal. These features are used in a file format and in a streaming format.

4. 发明公开

EP2016383A1 METHOD AND APPARATUS FOR LOSSLESS ENCODING OF A SOURCE SIGNAL USING A LOSSY ENCODED DATA STREAM AND A LOSSLESS EXTENSION DATA STREAM 失效转让
标题翻译：使用损耗编码数据流和无损扩展数据流对源信号进行无损编码的方法和设备
公开(公告)号：EP2016383A1
公开(公告)日：2009-01-21
申请号：EP07728245.7
申请日：2007-04-18
申请人： Thomson Licensing
发明人： BÖHM, Johannes , JAX, Peter , KEILER, Florian , WÜBBOLT, Oliver , KORDON, Sven
IPC分类号： G01L19/00 , G10L19/14
CPC分类号： G10L19/24 , G10L19/0017
摘要： In lossy based lossless coding a PCM audio signal passes through a lossy encoder (41) to a lossy decoder (42). The lossy encoder provides a lossy bit stream. The difference signal (S Diff ) between the PCM signal and the lossy decoder output is lossless encoded (52), providing an extension bit stream. The invention facilitates enhancing a lossy perceptual audio encoding/decoding by an extension that enables mathematically exact reproduction of the original waveform using enhanced de-correlation, and provides additional data for reconstructing at decoder site an intermediate-quality audio signal. The lossless extension can be used to extend the widely used mp3 encoding/decoding to lossless encoding/decoding and superior quality mp3 encoding/de-coding.
摘要翻译：在基于有损耗的无损编码中，PCM音频信号通过有损编码器（41）传送到有损解码器（42）。有损编码器提供有损比特流。 PCM信号和有损解码器输出之间的差分信号（SDiff）被无损编码（52），提供扩展比特流。本发明有助于通过扩展实现有损感知音频编码/解码，该扩展能够使用增强的去相关在数学上精确地再现原始波形，并且提供用于在解码器站点重建中等质量音频信号的附加数据。无损扩展可用于将广泛使用的mp3编码/解码扩展到无损编码/解码和优质mp3编码/解码。

5. 发明公开

EP2016583A1 METHOD AND APPARATUS FOR LOSSLESS ENCODING OF A SOURCE SIGNAL, USING A LOSSY ENCODED DATA STREAM AND A LOSSLESS EXTENSION DATA STREAM 有权
标题翻译：用于使用损耗编码数据流和无损扩展数据流对源信号进行无损编码的方法和设备
公开(公告)号：EP2016583A1
公开(公告)日：2009-01-21
申请号：EP07728246.5
申请日：2007-04-18
申请人： Thomson Licensing
发明人： JAX, Peter , KEILER, Florian , WÜBBOLT, Oliver , KORDON, Sven , BÖHM, Johannes
IPC分类号： G10L19/00 , G10L19/14
CPC分类号： G10L19/0017 , G10L19/04 , G10L19/24
摘要： In lossy based lossless coding a PCM audio signal passes through a lossy encoder (101) to a lossy decoder (102). The lossy encoder provides a lossy bit stream (111). The lossy decoder also provides side information (115) that is used to control (105) the coefficients (118) of a prediction filter (106) that de-correlates the difference signal (104) between the PCM signal and the lossy decoder output. The de-correlated difference signal is lossless encoded (108), providing an extension bit stream (121). Instead of, or in addition to, de-correlating in the time domain, a de-correlation in the frequency domain using spectral whitening can be performed. The lossy encoded bit stream together with the lossless encoded extension bit stream form a lossless encoded bitstream. The invention facilitates enhancing a lossy perceptual audio encoding/decoding by an extension that enables mathematically exact reproduction of the original waveform, and provides additional data for reconstructing at decoder site an intermediate-quality audio signal. The lossless extension can be used to extend the widely used mp3 encoding/decoding to lossless encoding/decoding and superior quality mp3 encoding/decoding.
摘要翻译：在基于有损耗的无损编码中，PCM音频信号通过有损编码器（101）传送到有损解码器（102）。有损编码器提供有损位流（111）。有损解码器还提供用于控制（105）使PCM信号与有损解码器输出之间的差信号（104）失相关的预测滤波器（106）的系数（118）的辅助信息（115）。解相关差信号被无损编码（108），提供扩展比特流（121）。代替或者除了在时域中去相关，可以执行使用频谱白化的频域中的去相关。有损编码比特流连同无损编码扩展比特流形成无损编码比特流。本发明有利于通过能够在数学上精确再现原始波形的扩展来增强有损感知音频编码/解码，并提供用于在解码器站点重建中等质量音频信号的附加数据。无损扩展可用于将广泛使用的mp3编码/解码扩展到无损编码/解码和优质mp3编码/解码。

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