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1. 发明申请

US20070225840A1 Stream Reproduction Device and Stream Supply Device 有权
标题翻译：流再现设备和流提供设备
公开(公告)号：US20070225840A1
公开(公告)日：2007-09-27
申请号：US11629439
申请日：2006-02-17
申请人： Hiroshi Yahata , Tomoyuki Okada , Akihisa Kawamura
发明人： Hiroshi Yahata , Tomoyuki Okada , Akihisa Kawamura
IPC分类号： G06F17/00
CPC分类号： G11B20/00007 , G11B20/10527 , G11B27/329 , G11B2020/00014 , G11B2020/1074 , G11B2220/213 , G11B2220/2541 , H04N5/85 , H04N9/8042 , H04N9/8211
摘要： A stream playback device for playing back an audio stream including audio frames which are each made up of base data and extension data is provided. The stream playback device includes a decoder and an interface unit operable to receive the audio stream supplied from a stream supply device. The stream playback device notifies the stream supply device whether only the base data or both the base data and the extension data are usable in decoding of the audio stream by the decoder, through the interface unit.
摘要翻译：提供了用于回放包括由基本数据和扩展数据组成的音频帧的音频流的流播放设备。流播放设备包括解码器和可操作以接收从流提供设备提供的音频流的接口单元。流播放装置通过接口单元通知流提供装置是否只有基本数据或基本数据和扩展数据两者都可用于解码器对音频流的解码。

2. 发明授权

US07844355B2 Stream reproduction device and stream supply device 有权
标题翻译：流再现设备和流提供设备
公开(公告)号：US07844355B2
公开(公告)日：2010-11-30
申请号：US11629439
申请日：2006-02-17
申请人： Hiroshi Yahata , Tomoyuki Okada , Akihisa Kawamura
发明人： Hiroshi Yahata , Tomoyuki Okada , Akihisa Kawamura
IPC分类号： G06F17/00
CPC分类号： G11B20/00007 , G11B20/10527 , G11B27/329 , G11B2020/00014 , G11B2020/1074 , G11B2220/213 , G11B2220/2541 , H04N5/85 , H04N9/8042 , H04N9/8211
摘要： A stream playback device for playing back an audio stream including audio frames which are each made up of base data and extension data is provided. The stream playback device includes a decoder and an interface unit operable to receive the audio stream supplied from a stream supply device. The stream playback device notifies the stream supply device whether only the base data or both the base data and the extension data are usable in decoding of the audio stream by the decoder, through the interface unit.
摘要翻译：提供了用于回放包括由基本数据和扩展数据组成的音频帧的音频流的流播放设备。流播放设备包括解码器和可操作以接收从流提供设备提供的音频流的接口单元。流播放装置通过接口单元通知流提供装置是否只有基本数据或基本数据和扩展数据两者都可用于解码器对音频流的解码。

3. 发明申请

US20100235171A1 AUDIO DECODER 有权
标题翻译：音频解码器
公开(公告)号：US20100235171A1
公开(公告)日：2010-09-16
申请号：US11993066
申请日：2006-07-11
申请人： Yosiaki Takagi , Kok Seng Chong , Takeshi Norimatsu , Shuji Miyasaka , Akihisa Kawamura , Kojiro Ono
发明人： Yosiaki Takagi , Kok Seng Chong , Takeshi Norimatsu , Shuji Miyasaka , Akihisa Kawamura , Kojiro Ono
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , G10L19/0204
摘要： Provided is an audio decoder which can reduce an amount of arithmetic operations while suppressing occurrence of aliasing noise. The audio decoder includes: a decoder (102) and an analysis filter bank (110) which generate, from a coded down-mixed signal, the first frequency band signal (x) corresponding to a down-mixed signal (M); a channel expansion unit (130) which converts the first frequency band signal (x) generated by the analysis filter bank (110) into output signals (y) corresponding to respective audio signals of N channels, using BC information; an synthesis filter bank (140) which performs band synthesis for the output signals (y) generate by the channel expansion unit (130) and thereby converts the output signals (y) into the respective audio signals of the N channels on a time axis; and an aliasing noise detection unit (120) which detects occurrence of aliasing noise in the first frequency band signal (x). The channel expansion unit (130) further prevents the aliasing noise from being included in the output signals (y), based on information detected by the aliasing noise detection unit (120).
摘要翻译：提供一种音频解码器，其可以在抑制混叠噪声的发生的同时减少算术运算量。音频解码器包括：解码器（102）和分析滤波器组（110），其从编码的下变频信号产生与下混合信号（M）对应的第一频带信号（x）; 信道扩展单元，其使用BC信息将由分析滤波器组（110）生成的第一频带信号（x）转换成对应于N个信道的各个音频信号的输出信号（y）; 合成滤波器组（140），对由所述信道扩展单元（130）产生的输出信号（y）进行频带合成，从而将输出信号（y）转换成时间轴上的N个信道的各个音频信号; 以及用于检测第一频带信号（x）中的混叠噪声的出现的混叠噪声检测单元（120）。信道扩展单元（130）还基于混叠噪声检测单元（120）检测到的信息进一步防止混叠噪声包含在输出信号（y）中。

4. 发明申请

US20090234657A1 ENERGY SHAPING APPARATUS AND ENERGY SHAPING METHOD 有权
标题翻译：能量成形装置和能量成形方法
公开(公告)号：US20090234657A1
公开(公告)日：2009-09-17
申请号：US12065378
申请日：2006-08-31
申请人： Yoshiaki Takagi , Kok Seng Chong , Takeshi Norimatsu , Shuji Miyasaka , Akihisa Kawamura , Kojiro Ono , Tomokazu Ishikawa
发明人： Yoshiaki Takagi , Kok Seng Chong , Takeshi Norimatsu , Shuji Miyasaka , Akihisa Kawamura , Kojiro Ono , Tomokazu Ishikawa
IPC分类号： G10L21/00
CPC分类号： G10L19/26 , G10L19/008 , G10L19/0204 , H04S2420/03
摘要： A temporal processing apparatus (energy shaping apparatus) (600a) includes: a splitter (601) splitting an audio signal, included in the sub-band domain, which are obtained through a hybrid time and frequency transformation into diffuse signals indicating reverberating components and direct signals indicating non-reverberating components; a downmix unit (604) generating a downmix signal by downmixing the direct signals; BPFs (605 and 606) respectively generating a bandpass downmix signal and bandpass diffuse signals, by performing bandpass processing on the downmix signal and the diffuse signals on a sub-band-to-sub-band basis, which are split on the sub-band basis; normalization processing units (607 and 608) respectively generating a normalized downmix signal and normalized diffuse signals by normalizing the bandpass downmix signal and the bandpass diffuse signals with regard to respective energy; a scale computation processing unit (609) computing, on a predetermined time slot basis, a scale factor indicating the magnitude of energy of the normalized downmix signal with respect to energy of the normalized diffuse signals; a calculating unit (611) generating scale diffuse signals by multiplying the normalized diffuse signals by the scale factor; a HPF (612) generating high-pass diffuse signals by performing high-pass processing on the scale diffuse signals; an adding unit (613) generating addition signals by adding the high-pass diffuse signals and the direct signals; and a synthesis filter bank (614) performing synthesis filter processing on the addition signals and transforming the addition signals into the time domains
摘要翻译：时间处理装置（能量整形装置）（600a）包括：分离器（601），将包括在子带域中的音频信号（通过混合时间和频率变换获得）分解成指示混响分量的漫射信号，并且直接表示非混响分量的信号; 下混合单元（604），通过将所述直接信号进行下混合来产生下混合信号; BPF（605和606）分别产生带通下混合信号和带通扩散信号，通过对分频在子带上的下混信号和扩频信号进行带通处理，分散在子带基础; 归一化处理单元（607和608），分别通过相对于各自的能量归一化带通下混合信号和带通漫射信号来产生归一化的下混合信号和归一化的扩散信号; 比例计算处理单元（609）在预定时隙的基础上计算指示归一化的下混合信号相对于归一化扩散信号的能量的能量的大小的比例因子; 计算单元（611），通过将归一化扩散信号乘以比例因子来生成缩放漫射信号; HPF（612）通过对刻度扩散信号进行高通处理来产生高通漫反射信号; 加法单元（613），通过加上高通漫反射信号和直接信号来产生加法信号; 以及合成滤波器组（614）对加法信号执行合成滤波处理，并将加法信号转换成时域

5. 发明授权

US07236838B2 Signal processing apparatus, signal processing method, program and recording medium 有权
标题翻译：信号处理装置，信号处理方法，程序和记录介质
公开(公告)号：US07236838B2
公开(公告)日：2007-06-26
申请号：US09939048
申请日：2001-08-24
申请人： Takashi Katayama , Masaharu Matsumoto , Masahiro Sueyoshi , Kosuke Nishio , Takeshi Fujita , Akihisa Kawamura , Kazutaka Abe
发明人： Takashi Katayama , Masaharu Matsumoto , Masahiro Sueyoshi , Kosuke Nishio , Takeshi Fujita , Akihisa Kawamura , Kazutaka Abe
IPC分类号： G06F17/00 , H04B1/00
CPC分类号： H04S3/02 , H04S7/307 , H04S2400/01 , H04S2400/07
摘要： A signal processing apparatus includes a decoder for decoding a stream signal so as to generate a digital audio signal of a low frequency effect channel and digital audio signals of first through n'th (n≧2) channels; an adder section for adding the digital audio signal of the low frequency effect channel and the digital audio signal of a specified channel among the first through n'th channels, so as to generate an addition signal; an n number of D/A conversion sections for converting the digital audio signals of the first through n'th channels, excluding the digital audio signal of the specified channel, and the addition signal into n types of analog audio signals; a first signal processing section for generating a digital audio signal of the low frequency effect channel; and a second signal processing section for generating an analog audio signal of the specified channel.
摘要翻译：信号处理装置包括：解码器，用于解码流信号，以产生低频效应信道的数字音频信号和第一至第n（n> = 2）个信道的数字音频信号; 加法器部分，用于在第一至第n通道中添加低频效果声道的数字音频信号和指定声道的数字音频信号，以产生加法信号; n个D / A转换部分，用于将排除指定通道的数字音频信号的第一至第n个通道的数字音频信号和加法信号转换为n种类型的模拟音频信号; 第一信号处理部分，用于产生低频效应信道的数字音频信号; 以及第二信号处理部分，用于产生指定信道的模拟音频信号。

6. 发明申请

US20060285012A1 Transmission method, transmission system, sending device and reception device 有权
公开(公告)号：US20060285012A1
公开(公告)日：2006-12-21
申请号：US11489175
申请日：2006-07-19
申请人： Naoki Ejima , Toshiroh Nishio , Akihisa Kawamura , Hidekazu Suzuki , Sho Murakoshi , Tetsuya Hiroe , Hiroshige Okamoto
发明人： Naoki Ejima , Toshiroh Nishio , Akihisa Kawamura , Hidekazu Suzuki , Sho Murakoshi , Tetsuya Hiroe , Hiroshige Okamoto
IPC分类号： H04N7/00
CPC分类号： H04N7/083 , G09G2370/04 , H04N21/43632 , H04N21/439
摘要： Digital audio data which have a predetermined packet structure are divided into units including a predetermined number of bits; each unit of the divided digital audio data is converted into specific data to be encoded; the encoded data are arranged in blanking intervals of video data; the digital audio data are transmitted as well as the video data using a transmission line for the video data, and the video data and the audio data may be simultaneously and favorably transmitted, adopting an existing video-data transmission format such as the DVI standard.

7. 发明授权

US07106943B2 Coding device, coding method, program and recording medium 有权
公开(公告)号：US07106943B2
公开(公告)日：2006-09-12
申请号：US09955356
申请日：2001-09-18
申请人： Takashi Katayama , Kosuke Nishio , Masaharu Matsumoto , Akihisa Kawamura , Takeshi Fujita , Masahiro Sueyoshi , Kazutaka Abe
发明人： Takashi Katayama , Kosuke Nishio , Masaharu Matsumoto , Akihisa Kawamura , Takeshi Fujita , Masahiro Sueyoshi , Kazutaka Abe
IPC分类号： H04N5/91 , H04N7/00
CPC分类号： G10L19/0208 , G10L21/04 , H04N19/40 , H04N21/42646 , H04N21/4334 , H04N21/4341 , H04N21/4394 , H04N21/4398 , H04N21/4402
摘要： A coding device includes: a decoder for decoding a first stream signal in which a first video stream including a first video stream information generated by coding a first video signal and a first audio stream including a first audio stream information generated by coding a first audio signal are multiplexed; and a re-encoder for generating, based on the decoded first stream signal, a second video stream including a second video stream information having a bit rate lower than the first video stream information and a second audio stream including a second audio stream information having a bit rate lower than the first audio stream information, and multiplexing the second video stream is and the second audio stream to generate a second stream signal.

8. 发明授权

US06931371B2 Digital interface device 有权
标题翻译：数字接口设备
公开(公告)号：US06931371B2
公开(公告)日：2005-08-16
申请号：US09933881
申请日：2001-08-21
申请人： Masahiro Sueyoshi , Takeshi Fujita , Kazutaka Abe , Kosuke Nishio , Takashi Katayama , Masaharu Matsumoto , Akihisa Kawamura
发明人： Masahiro Sueyoshi , Takeshi Fujita , Kazutaka Abe , Kosuke Nishio , Takashi Katayama , Masaharu Matsumoto , Akihisa Kawamura
IPC分类号： G10L19/02 , G10L19/022 , G10L19/14 , G10L19/16 , H04J3/07 , H04L7/04 , H04L7/08 , G10L19/00
CPC分类号： G10L19/167 , G10L19/022 , H04J3/07 , H04L7/04 , H04L7/08
摘要： This invention relates to a signal transmission apparatus and a signal transmission method both for transmitting a plurality of pieces of encoded audio information having a plurality of sampling frequencies of F or 1/N×F, which are encoded by the same encoding method, via a digital interface to a signal reception apparatus.
摘要翻译：本发明涉及一种信号传输装置和信号传输方法，用于通过数字接口发送具有由相同编码方法编码的F或1 / NxF的多个采样频率的多个编码音频信息信号接收装置。

9. 发明授权

US06760286B2 Method of transmitting data among a plurality of LSIs, and recording medium reproducing apparatus using the method 有权
标题翻译：在多个LSI之间传输数据的方法以及使用该方法的记录介质再现装置
公开(公告)号：US06760286B2
公开(公告)日：2004-07-06
申请号：US10241472
申请日：2002-09-12
申请人： Akihisa Kawamura , Masatoshi Shimbo , Yoshihiro Mori
发明人： Akihisa Kawamura , Masatoshi Shimbo , Yoshihiro Mori
IPC分类号： G11B700
CPC分类号： G11B20/00818 , G11B20/00086 , G11B20/0021 , G11B20/00695
摘要： There is provided a recording medium reproducing apparatus in which a digital signal immediately before being inputted to a D/A converting LSI is prevented from being taken out and unfairly copied. A digital signal processing LSI and the D/A converting LSI are connected to each other through an external bus. A scrambling processing circuit for scrambling a digital signal outputted from a digital signal processing circuit is provided inside the digital signal processing LSI. A descrambling processing circuit for descrambling the scrambled digital signal transmitted through the external bus is provided inside the D/A converting LSI.
摘要翻译：提供了一种记录介质再现装置，其中防止输入到D / A转换LSI之前的数字信号被取出并不正确地复制。数字信号处理LSI和D / A转换LSI通过外部总线相互连接。在数字信号处理LSI内部设置用于对从数字信号处理电路输出的数字信号进行加扰的加扰处理电路。在D / A转换LSI内部设置用于对通过外部总线发送的加扰数字信号进行解扰的解扰处理电路。

10. 发明授权

US06460016B1 Audio decoding device for decoding coded audio information with multiple channels 失效
标题翻译：用于解码具有多个声道的编码音频信息的音频解码装置
公开(公告)号：US06460016B1
公开(公告)日：2002-10-01
申请号：US09685234
申请日：2000-10-10
申请人： Masahiro Sueyoshi , Shuji Miyasaka , Tukuru Ishito , Takeshi Fujita , Takashi Katayama , Masaharu Matsumoto , Tuyoshi Nakamura , Eiji Otomura , Akihisa Kawamura
发明人： Masahiro Sueyoshi , Shuji Miyasaka , Tukuru Ishito , Takeshi Fujita , Takashi Katayama , Masaharu Matsumoto , Tuyoshi Nakamura , Eiji Otomura , Akihisa Kawamura
IPC分类号： G10L2104
CPC分类号： H04B1/665 , H04H20/89 , H04H40/18
摘要： An audio decoding device for decoding audio information with multiple channels includes a coded information memory section for storing the coded audio information; an information transmission section for reading the coded audio information stored at an arbitrary position in the coded information memory section; and an audio decoding section for decoding the coded audio information read by the information transmission section and outputting the resultant audio information in accordance with a time axis, wherein the information transmission section includes a buffer memory for retaining an address of an actual pointer for reading the coded audio information in the coded information memory section so as not to be reread, an address of a temporary pointer for reading the coded audio information in the coded information memory section so as to be reread, actual pointer data read by the actual pointer, and temporary pointer data read by the temporary pointer.
摘要翻译：用于对具有多个通道的音频信息进行解码的音频解码装置包括用于存储编码的音频信息的编码信息存储部分; 信息发送部，用于读取存储在编码信息存储部中的任意位置的编码音频信息; 以及音频解码部分，用于对由信息传输部分读取的编码音频信息进行解码，并根据时间轴输出所得到的音频信息，其中信息传输部分包括缓冲存储器，用于保存用于读取的实际指针的地址编码信息存储部分中的编码音频信息不被重新读取，用于读取编码信息存储部分中的编码音频信息以便重新读取的临时指针的地址，由实际指针读取的实际指针数据，以及由临时指针读取的临时指针数据。

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