公开(公告)号：US06751177B1

公开(公告)日：2004-06-15

申请号：US09530540

申请日：2000-06-30

申请人： Kazutaka Abe ,  Masaharu Matsumoto ,  Akihisa Kawamura ,  Masatoshi Shimbo ,  Naoki Ejima

发明人： Kazutaka Abe ,  Masaharu Matsumoto ,  Akihisa Kawamura ,  Masatoshi Shimbo ,  Naoki Ejima

IPC分类号： G11B509

CPC分类号： G11B20/00007 ,  G11B20/00992 ,  G11B20/10 ,  G11B20/10527 ,  G11B2020/10592 ,  G11B2020/10601 ,  G11B2220/2562

摘要： When, through a multi-speaker of a DVD audio system, signals are recorded/reproduced using a sampling frequency different for every channel, the quantity of calculation of a filter circuit is reduced. Up-sampling information about whether or not the sampling is carried out before the up-sampling by up-sampling means (2a, 2b) is acquired by up-sampling information detecting means (6). The signal up-sampled is filtered by a halfband filter circuit (3), subjected to loss-less compression, and recorded on a recording medium (8).

摘要翻译： 当通过DVD音频系统的多扬声器使用针对每个通道不同的采样频率来记录/再现信号时，滤波器电路的计算量减少。 通过上采样信息检测装置（6）获取关于在通过上采样装置（2a，2b）进行上采样之前是否执行采样的上采样信息。 上采样的信号由半带滤波器电路（3）滤波，经受无损压缩，并记录在记录介质（8）上。

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。

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.

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。

公开(公告)号：US07509179B2

公开(公告)日：2009-03-24

申请号：US09940590

申请日：2001-08-29

申请人： Masaharu Matsumoto ,  Takashi Katayama ,  Masahiro Sueyoshi ,  Kousuke Nishio ,  Kakeshi Fujita ,  Akihisa Kawamura ,  Kazutaka Abe

发明人： Masaharu Matsumoto ,  Takashi Katayama ,  Masahiro Sueyoshi ,  Kousuke Nishio ,  Kakeshi Fujita ,  Akihisa Kawamura ,  Kazutaka Abe

IPC分类号： G06F17/00

CPC分类号： H04L65/1043 ,  H04L29/06027 ,  H04L65/4084 ,  H04L65/604 ,  H04L67/34 ,  H04L69/329 ,  H04N7/163 ,  H04N21/2543 ,  H04N21/25816 ,  H04N21/26225 ,  H04N21/6125 ,  H04N21/6131 ,  H04N21/8106

摘要： A distribution system includes a distribution server device, an acquisition device, and an audio reproduction device, and distributes a program for decoding encoded audio data. The distribution server device sends the program for decoding the encoded audio data. The acquisition device is connected to the distribution server device via a network, and acquires the program and stores it in a removable memory unit. The audio reproduction device decodes the encoded audio data using the program stored in the removable memory unit, and outputs sounds.

公开(公告)号：US06356639B1

公开(公告)日：2002-03-12

申请号：US09058713

申请日：1998-04-10

申请人： Tsukuru Ishito ,  Masaharu Matsumoto ,  Shuji Miyasaka ,  Takeshi Fujita ,  Takashi Katayama ,  Masahiro Sueyoshi ,  Kazutaka Abe ,  Tsuyoshi Nakamura ,  Eiji Otomura ,  Akihisa Kawamura

发明人： Tsukuru Ishito ,  Masaharu Matsumoto ,  Shuji Miyasaka ,  Takeshi Fujita ,  Takashi Katayama ,  Masahiro Sueyoshi ,  Kazutaka Abe ,  Tsuyoshi Nakamura ,  Eiji Otomura ,  Akihisa Kawamura

IPC分类号： H04R500

CPC分类号： H04N5/602 ,  G10L21/04 ,  H04B1/665 ,  H04N21/4398

摘要： A sound image localization device which includes a signal source for outputting an audio signal, a signal divider for dividing the audio signal output from the signal source into two digital audio signals respectively for two channels, and a first signal processor for receiving one of the two digital signals and processing the digital signal so as to localize a virtual sound image using a filter having a first frequency characteristic. In addition, the sound image localization device includes a first D/A converter for converting the digital signal output from the first signal processor into an analog signal, a second D/A converter for receiving the other digital signal obtained from the signal divider and converting the signal into an analog signal, a first control speaker for outputting the audio signal obtained by the first D/A converter to a prescribed space area; and a second control speaker for outputting the audio signal obtained by the second D/A converter to a prescribed space area.

摘要翻译： 一种声像定位装置，包括用于输出音频信号的信号源，分频器，用于将从信号源输出的音频信号分别分成两个数字音频信号分别用于两个通道;以及第一信号处理器，用于接收两个信号中的一个 数字信号并处理数字信号，以便使用具有第一频率特性的滤波器来定位虚拟声像。 此外，声像定位装置包括：第一D / A转换器，用于将从第一信号处理器输出的数字信号转换为模拟信号;第二D / A转换器，用于接收从信号分配器获得的另一数字信号; 将信号转换为模拟信号，第一控制扬声器，用于将由第一D / A转换器获得的音频信号输出到规定的空间区域; 以及第二控制扬声器，用于将由第二D / A转换器获得的音频信号输出到规定的空间区域。

公开(公告)号：US06295319B1

公开(公告)日：2001-09-25

申请号：US09280612

申请日：1999-03-29

申请人： Masahiro Sueyoshi ,  Masaharu Matsumoto ,  Shuji Miyasaka ,  Takeshi Fujita ,  Takashi Katayama ,  Kazutaka Abe ,  Kosuke Nishio ,  Akihisa Kawamura ,  Tsukuru Ishito ,  Tsuyoshi Nakamura ,  Eiji Otomura

发明人： Masahiro Sueyoshi ,  Masaharu Matsumoto ,  Shuji Miyasaka ,  Takeshi Fujita ,  Takashi Katayama ,  Kazutaka Abe ,  Kosuke Nishio ,  Akihisa Kawamura ,  Tsukuru Ishito ,  Tsuyoshi Nakamura ,  Eiji Otomura

IPC分类号： H04B166

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。

公开(公告)号：US06823310B2

公开(公告)日：2004-11-23

申请号：US09994962

申请日：2001-11-27

申请人： Tsukuru Ishito ,  Masaharu Matsumoto ,  Shuji Miyasaka ,  Takeshi Fujita ,  Takashi Katayama ,  Masahiro Sueyoshi ,  Kazutaka Abe ,  Tsuyoshi Nakamura ,  Eiji Otomura ,  Akihisa Kawamura

发明人： Tsukuru Ishito ,  Masaharu Matsumoto ,  Shuji Miyasaka ,  Takeshi Fujita ,  Takashi Katayama ,  Masahiro Sueyoshi ,  Kazutaka Abe ,  Tsuyoshi Nakamura ,  Eiji Otomura ,  Akihisa Kawamura

IPC分类号： G10L1900

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，并且存储用于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，用于对与解码存储器部分中的比特流的第一块相对应的每个频道的解码音频数据进行下混合，同时解码比特流的第二块。

公开(公告)号：US06904089B1

公开(公告)日：2005-06-07

申请号：US09472401

申请日：1999-12-27

申请人： Masahiro Sueyoshi ,  Masaharu Matsumoto ,  Kazutaka Abe ,  Kousuke Nishio ,  Takashi Katayama ,  Akihisa Kawamura ,  Shuji Miyasaka ,  Takeshi Fujita

发明人： Masahiro Sueyoshi ,  Masaharu Matsumoto ,  Kazutaka Abe ,  Kousuke Nishio ,  Takashi Katayama ,  Akihisa Kawamura ,  Shuji Miyasaka ,  Takeshi Fujita

IPC分类号： G10L19/022 ,  G10L19/16 ,  H04B1/00 ,  H04B1/66 ,  H04N21/233 ,  H04N21/439

CPC分类号： H04N21/4392 ,  G10L19/022 ,  G10L19/167 ,  H04N21/233

摘要： An encoding device includes an encoding section for generating hit 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命中流，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。 存储部分包括缓冲器，其具有对应于至少一个值的缓冲器，该值通过从最大帧长度的两倍的值以最小可能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。

公开(公告)号：US06631352B1

公开(公告)日：2003-10-07

申请号：US09476897

申请日：2000-01-03

申请人： Takeshi Fujita ,  Takashi Katayama ,  Masahiro Sueyoshi ,  Shuji Miyasaka ,  Masaharu Matsumoto ,  Akihisa Kawamura ,  Kazutaka Abe ,  Kousuke Nishio

发明人： Takeshi Fujita ,  Takashi Katayama ,  Masahiro Sueyoshi ,  Shuji Miyasaka ,  Masaharu Matsumoto ,  Akihisa Kawamura ,  Kazutaka Abe ,  Kousuke Nishio

IPC分类号： G10L2100

CPC分类号： G10L19/167 ,  G11B20/10527

摘要： A decoding circuit, for receiving a bit stream including an encoded audio signal and header information used for-decoding the encoded audio signal, and decoding the encoded audio signal based on the header information, includes a header analysis section for outputting at least one decoding parameter obtained from the header information and decoding parameter change information indicating whether or not the at least one decoding parameter has been changed; a signal processing section for decoding the encoded audio signal, based on the at least one decoding parameter, into a decoded signal and outputting the decoded signal; an automatic mute processing section for executing automatic mute on the decoded signal after the at least one decoding parameter is changed; and an output section for outputting the decoded signal output from the automatic mute processing section.

摘要翻译： 一种解码电路，用于接收包括编码音频信号的位流和用于解码编码音频信号的标题信息，以及基于标题信息对编码音频信号进行解码的标题分析部分，用于输出至少一个解码参数 从表示是否已经改变了至少一个解码参数的标题信息和解码参数改变信息获得; 信号处理部分，用于将编码音频信号基于至少一个解码参数解码为解码信号并输出​​解码信号; 自动静音处理部分，用于在所述至少一个解码参数改变之后对所述解码信号执行自动静音; 以及输出部分，用于输出从自动静音处理部分输出的解码信号。