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1. 发明公开

EP1041721A2 Decoding device for Huffman-encoded data 审中-公开
标题翻译：霍夫曼 - 科迪埃戴德公司（DekodiervorrichtungfürHuffman-kodierte Daten）
公开(公告)号：EP1041721A2
公开(公告)日：2000-10-04
申请号：EP00106553.1
申请日：2000-03-27
申请人： Matsushita Electric Industrial Co., Ltd.
发明人： Miyasaka, Shuji , Fujita, Takeshi , Sueyoshi, Masahiro , Kawamura, Akihisa , Matsumoto, Masaharu , Katayama, Takashi , Abe, Kazutaka , Nishio, Kousuke
IPC分类号： H03M7/42
CPC分类号： H03M7/425
摘要： A decoding device for decoding a data stream includes a decoding table including a first region and a second region; a first decoder; and a second decoder. The first region defines a relationship between first data having a predetermined number of bits and a result of decoding a portion of the first data having bits smaller than or equal to the predetermined number. The second region defines a relationship between concatenated data obtained by concatenating the first data with second data having additional bits and a result of decoding the concatenated data. The first decoder reads the first data from the data stream; decodes the portion of the first data based on the first region; determines whether the decoding of the portion of the first data is completed or not; and when the decoding of the portion of the first data is completed, outputs a result of the decoding of the portion of the first data. When the decoding of the portion of the first data is not completed, the second decoder reads the second data out of the data stream: concatenates the first data with the second data to generate the concatenated data; decodes the concatenated data based on the second region; and outputs a result of the decoding of the concatenated data.
摘要翻译：用于对数据流进行解码的解码装置包括：包括第一区域和第二区域的解码表; 第一解码器; 和第二解码器。第一区域定义具有预定位数的第一数据和解码具有小于或等于预定数目的位的第一数据的一部分的结果之间的关系。第二区域定义通过将第一数据与具有附加位的第二数据连接获得的级联数据与对级联数据进行解码的结果之间的关系。第一解码器从数据流读取第一数据; 基于第一区域对第一数据的部分进行解码; 确定第一数据的部分的解码是否完成; 并且当第一数据的部分的解码完成时，输出第一数据的部分的解码结果。当第一数据的部分解码未完成时，第二解码器从数据流中读出第二数据：将第一数据与第二数据连接起来产生级联数据; 基于第二区域对连接的数据进行解码; 并输出对级联数据的解码结果。

2. 发明公开

EP1017181A2 Encoding device and decoding device 审中-公开
标题翻译： Kodierungsvorrichtung und Dekodierungsvorrichtung
公开(公告)号：EP1017181A2
公开(公告)日：2000-07-05
申请号：EP99126048.0
申请日：1999-12-28
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： Sueyoshi, Masahiro , Matsumoto, Masaharu , Abe, Kazutaka , Nishio, Kousuke , Katayama, Takashi , Kawamura, Akihisa , Miyasaka, Shuji , Fujita, Takeshi
IPC分类号： H04B1/00 , G10L19/00 , H04N7/24
CPC分类号： H04N21/4392 , G10L19/022 , G10L19/167 , H04N21/233
摘要： An encoding device includes an encoding section for generating bit streams having a variable frame length from an input audio signal, a maximum frame length of the bit streams being fixed; a storage section for storing the bit streams generated by the encoding section; and a transfer section for transferring the bit streams at a prescribed transfer rate. The storage section includes a buffer having a capacity corresponding to at least a value which is obtained by subtracting an amount of the bit streams transferable in one frame time period at a minimum possible transfer rate from a value of twice the maximum frame length.
摘要翻译：编码装置包括编码部分，用于从输入音频信号产生具有可变帧长度的比特流，所述比特流的最大帧长度被固定; 存储部，用于存储由编码部生成的比特流; 以及用于以规定的传送速率传送比特流的传送部分。存储部分包括具有对应于至少一个值的缓冲器，所述值通过从最大帧长度的两倍的值以最小可能的传送速率减去在一个帧时间段中可传送的比特流的量而获得的值。

3. 发明公开

EP1041721A3 Decoding device for Huffman-encoded data 审中-公开
标题翻译：解码的霍夫曼编码数据
公开(公告)号：EP1041721A3
公开(公告)日：2004-03-24
申请号：EP00106553.1
申请日：2000-03-27
申请人： Matsushita Electric Industrial Co., Ltd.
发明人： Miyasaka, Shuji , Fujita, Takeshi , Sueyoshi, Masahiro , Kawamura, Akihisa , Matsumoto, Masaharu , Katayama, Takashi , Abe, Kazutaka , Nishio, Kousuke
IPC分类号： H03M7/42
CPC分类号： H03M7/425
摘要： A decoding device for decoding a data stream includes a decoding table including a first region and a second region; a first decoder; and a second decoder. The first region defines a relationship between first data having a predetermined number of bits and a result of decoding a portion of the first data having bits smaller than or equal to the predetermined number. The second region defines a relationship between concatenated data obtained by concatenating the first data with second data having additional bits and a result of decoding the concatenated data. The first decoder reads the first data from the data stream; decodes the portion of the first data based on the first region; determines whether the decoding of the portion of the first data is completed or not; and when the decoding of the portion of the first data is completed, outputs a result of the decoding of the portion of the first data. When the decoding of the portion of the first data is not completed, the second decoder reads the second data out of the data stream: concatenates the first data with the second data to generate the concatenated data; decodes the concatenated data based on the second region; and outputs a result of the decoding of the concatenated data.

4. 发明公开

EP1139336A3 Determination of quantizaion coefficients for a subband audio encoder 审中-公开
标题翻译：确定音频子带编码器的量化
公开(公告)号：EP1139336A3
公开(公告)日：2004-01-02
申请号：EP01107978.7
申请日：2001-03-29
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： Nishio, Kosuke , Katayama, Takashi , Matsumoto, Masaharu , Kawamura, Akihisa , Fujita, Takeshi , Sueyoshi, Masahiro , Abe, Kazutaka
IPC分类号： G10L19/02
CPC分类号： G10L19/0208
摘要： An encoder comprises an input device for sampling an input signal at predetermined time intervals to obtain sampled data on a temporal axis, a conversion device for converting the sampled data on the temporal axis to spectral data on a frequency axis, a quantization device for quantizing the spectral data on the frequency axis, and an output device for outputting a resultant value of quantization as an encoded bit stream. The quantization device comprises an expected-value-of-quantization adjustment portion for determining an expected value of quantization for a specific sub-band on the frequency axis, and a quantization portion for determining a quantization coefficient for the specific sub-band, and quantizing each of a plurality of spectral data contained in the specific sub-band using the quantization coefficient for the specific sub-band. The quantization coefficient for the specific sub-band is determined so that a resultant value of quantization obtained by quantizing one spectral data selected from the plurality of spectral data contained in the specific sub-band, using the quantization coefficient for the specific sub-band, is substantially equal to the expected value of quantization for the specific sub-band.

5. 发明授权

EP0948141B1 Decoding device for multichannel audio bitstream 有权
标题翻译：用于解码多声道音频比特流的装置
公开(公告)号：EP0948141B1
公开(公告)日：2005-05-11
申请号：EP99106068.2
申请日：1999-03-26
申请人： Matsushita Electric Industrial Co., Ltd.
发明人： Sueyoshi, Masahiro , Matsumoto, Masaharu , Miyasaka, Shuji , Fujita, Takeshi , Katayama, Takashi , Abe, Kazutaka , Nishio, Kosuke , Kawamura, Akihisa , Ishito, Tsukuru , Nakamura, Tsuyoshi , Otomura, Eiji
IPC分类号： H04B1/66 , H04N7/52
CPC分类号： H04N21/4341 , H04N21/8106

6. 发明公开

EP0871293A3 Audio processing for audio visual equipment 失效
标题翻译：音频处理视听设备
公开(公告)号：EP0871293A3
公开(公告)日：2002-05-29
申请号：EP98106710.1
申请日：1998-04-14
申请人： Matsushita Electric Industrial Co., Ltd.
发明人： Katayama, Takashi , Ishito, Tsukuru , Sueyoshi, Masahiro , Matsumoto, Masaharu , Abe, Kazutaka , Miyasaka, Shuji , Nakamura, Tsuyoshi , Fujita, Takeshi , Otomura, Eiji , Kawamura, Akihisa
IPC分类号： H03M7/00 , H04N7/52 , H04B14/04
CPC分类号： H04N5/602 , G10L21/04 , H04B1/665 , H04N21/4398
摘要： An audio decoding apparatus is provided for receiving a bit stream on a block-by-block basis, decoding one block of the bit stream to form decoded audio data for a plurality of channels, and storing the decoded audio data for each of the plurality of channels in a memory device, thereby down-mixing the decoded audio data for each of the plurality of channels. The audio decoding apparatus includes an operation section for down-mixing the decoded audio data for each of the plurality of channels corresponding to a first block of the bit stream in the memory section while a second block of the bit stream is decoded.

7. 发明公开

EP0871293A2 Audio processing for audio visual equipment 失效
标题翻译： Audioverarbeitungfüraudiovisuelle Apparatur
公开(公告)号：EP0871293A2
公开(公告)日：1998-10-14
申请号：EP98106710.1
申请日：1998-04-14
申请人： Matsushita Electric Industrial Co., Ltd.
发明人： Katayama, Takashi , Ishito, Tsukuru , Sueyoshi, Masahiro , Matsumoto, Masaharu , Abe, Kazutaka , Miyasaka, Shuji , Nakamura, Tsuyoshi , Fujita, Takeshi , Otomura, Eiji , Kawamura, Akihisa
IPC分类号： H03M7/00 , H04N7/52 , H04B14/04
CPC分类号： H04N5/602 , G10L21/04 , H04B1/665 , H04N21/4398
摘要： An audio decoding apparatus is provided for receiving a bit stream on a block-by-block basis, decoding one block of the bit stream to form decoded audio data for a plurality of channels, and storing the decoded audio data for each of the plurality of channels in a memory device, thereby down-mixing the decoded audio data for each of the plurality of channels. The audio decoding apparatus includes an operation section for down-mixing the decoded audio data for each of the plurality of channels corresponding to a first block of the bit stream in the memory section while a second block of the bit stream is decoded.
摘要翻译：提供音频解码装置，用于逐块地接收比特流，解码比特流的一个块以形成用于多个信道的解码音频数据，并存储多个信道中的每一个的解码音频数据通道，从而对多个通道中的每个通道的解码音频数据进行下混。音频解码装置包括一个操作部分，用于对与存储器部分中的比特流的第一块相对应的多个信道中的每一个进行解码的音频数据的下混合，同时解码比特流的第二块。

8. 发明公开

EP1139336A2 Determination of quantizaion coefficients for a subband audio encoder 审中-公开
标题翻译：音乐Teilbandkodierer
公开(公告)号：EP1139336A2
公开(公告)日：2001-10-04
申请号：EP01107978.7
申请日：2001-03-29
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： Nishio, Kosuke , Katayama, Takashi , Matsumoto, Masaharu , Kawamura, Akihisa , Fujita, Takeshi , Sueyoshi, Masahiro , Abe, Kazutaka
IPC分类号： G10L19/02
CPC分类号： G10L19/0208
摘要： An encoder comprises an input device for sampling an input signal at predetermined time intervals to obtain sampled data on a temporal axis, a conversion device for converting the sampled data on the temporal axis to spectral data on a frequency axis, a quantization device for quantizing the spectral data on the frequency axis, and an output device for outputting a resultant value of quantization as an encoded bit stream. The quantization device comprises an expected-value-of-quantization adjustment portion for determining an expected value of quantization for a specific sub-band on the frequency axis, and a quantization portion for determining a quantization coefficient for the specific sub-band, and quantizing each of a plurality of spectral data contained in the specific sub-band using the quantization coefficient for the specific sub-band. The quantization coefficient for the specific sub-band is determined so that a resultant value of quantization obtained by quantizing one spectral data selected from the plurality of spectral data contained in the specific sub-band, using the quantization coefficient for the specific sub-band, is substantially equal to the expected value of quantization for the specific sub-band.
摘要翻译：编码器包括用于以预定时间间隔对输入信号进行采样以在时间轴上获取采样数据的输入装置，用于将时间轴上的采样数据转换为频率轴上的频谱数据的转换装置，用于量化频率轴上的频谱数据，以及用于输出作为编码比特流的量化结果值的输出装置。量化装置包括用于确定频率轴上的特定子带的量化期望值的量化值预测值部分和用于确定特定子带的量化系数的量化部分，并量化使用特定子带的量化系数包含在特定子带中的多个频谱数据中的每一个。确定特定子带的量化系数，使得通过使用特定子带的量化系数量化从包含在特定子带中的多个频谱数据中选择的一个频谱数据而获得的量化的结果值，基本上等于特定子带的量化的期望值。

9. 发明公开

EP0948141A3 Decoding device for multichannel audio bitstream 有权
标题翻译：用于解码多声道音频比特流的装置
公开(公告)号：EP0948141A3
公开(公告)日：2000-07-19
申请号：EP99106068.2
申请日：1999-03-26
申请人： Matsushita Electric Industrial Co., Ltd.
发明人： Sueyoshi, Masahiro , Matsumoto, Masaharu , Miyasaka, Shuji , Fujita, Takeshi , Katayama, Takashi , Abe, Kazutaka , Nishio, Kosuke , Kawamura, Akihisa , Ishito, Tsukuru , Nakamura, Tsuyoshi , Otomura, Eiji
IPC分类号： H04B1/66 , H04N7/52
CPC分类号： H04N21/4341 , H04N21/8106
摘要： A decoding device for decoding a bit stream defined by MPEG2 Audio Multichannel is provided. The bit stream including an MPEG1 compatible area and an MPEG2 multichannel extended area, the MPEG1 compatible area including MPEG1 side information. The decoding device includes: MPEG1 decoding means for decoding the MPEG1 compatible area; MC decoding means for decoding the MPEG2 multichannel extended area; and MC header detection means for executing a first processing including locating a position of a header of the MPEG2 multichannel extended area based on the MPEG1 side information and shifting a read position of the bit stream to the position of the header.

10. 发明公开

EP0948141A2 Decoding device for multichannel audio bitstream 有权
标题翻译： Vorrichtung zur Dekodierung eines Mehrkanalaudiobitstroms
公开(公告)号：EP0948141A2
公开(公告)日：1999-10-06
申请号：EP99106068.2
申请日：1999-03-26
申请人： Matsushita Electric Industrial Co., Ltd.
发明人： Sueyoshi, Masahiro , Matsumoto, Masaharu , Miyasaka, Shuji , Fujita, Takeshi , Katayama, Takashi , Abe, Kazutaka , Nishio, Kosuke , Kawamura, Akihisa , Ishito, Tsukuru , Nakamura, Tsuyoshi , Otomura, Eiji
IPC分类号： H04B1/66 , H04N7/52
CPC分类号： H04N21/4341 , H04N21/8106
摘要： A decoding device for decoding a bit stream defined by MPEG2 Audio Multichannel is provided. The bit stream including an MPEG1 compatible area and an MPEG2 multichannel extended area, the MPEG1 compatible area including MPEG1 side information. The decoding device includes: MPEG1 decoding means for decoding the MPEG1 compatible area; MC decoding means for decoding the MPEG2 multichannel extended area; and MC header detection means for executing a first processing including locating a position of a header of the MPEG2 multichannel extended area based on the MPEG1 side information and shifting a read position of the bit stream to the position of the header.
摘要翻译：提供了解码由MPEG2音频多通道定义的比特流的解码装置。包括MPEG1兼容区域和MPEG2多通道扩展区域的比特流，MPEG1兼容区域包括MPEG1侧信息。解码装置包括：用于解码MPEG1兼容区域的MPEG1解码装置; 用于解码MPEG2多声道扩展区域的MC解码装置; 以及MC头部检测装置，用于执行包括基于MPEG1侧信息定位MPEG2多通道扩展区域的头部的位置并将比特流的读取位置移位到头部位置的第一处理。

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