公开(公告)号：US06381208B1

公开(公告)日：2002-04-30

申请号：US09565950

申请日：2000-05-05

申请人： Kazutaka Abe ,  Tetsuo Iwaki

发明人： Kazutaka Abe ,  Tetsuo Iwaki

IPC分类号： G11B700

CPC分类号： G11B7/13925 ,  G11B7/00736 ,  G11B7/0945 ,  G11B7/1374 ,  G11B2007/0013 ,  G11B2007/13727

摘要： Thickness information and refractive index information of a light transmitting layer are recorded in advance on an optical recording medium. Based on the thickness information and the refractive index information of the light transmitting layer, space between two lens units of an objective lens system is adjusted in an optical recording and reproducing apparatus, so that spherical aberration is adjusted. Accordingly, in the optical recording and reproducing apparatus using two lens units, it becomes possible to correctly record or reproduce the information to and from the optical recording medium.

摘要翻译： 光传输层的厚度信息和折射率信息预先记录在光记录介质上。 基于厚度信息和透光层的折射率信息，在光学记录和再现装置中调整物镜系统的两个透镜单元之间的空间，从而调节球面像差。 因此，在使用两个透镜单元的光学记录和再现设备中，可以将信息正确地记录或再现到光学记录介质上。

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：US07502816B2

公开(公告)日：2009-03-10

申请号：US10901108

申请日：2004-07-29

申请人： Yoshinori Kumamoto ,  Kazutaka Abe

发明人： Yoshinori Kumamoto ,  Kazutaka Abe

IPC分类号： G06F15/00

CPC分类号： G06F17/156 ,  G06F17/142

摘要： First and second coefficients are fed into a Fast Fourier Transform unit through real number input and imaginary number input portions thereof, respectively, to perform the Fast Fourier Transform of the entered first and second coefficients, thereby producing a frequency-domain coefficient vector. The Fast Fourier Transform of an input signal is performed to transform the input signal into a frequency-domain signal vector. Thereafter, the transformed signal vector is multiplied by the coefficient vector for each element, thereby providing a multiplication result. The Inverse Fast Fourier Transform of the multiplication result renders real number output and imaginary number output portions of the inverse transformation result as first and second series of output signals, respectively.

摘要翻译： 第一和第二系数分别通过其实数输入和虚数输入部分被馈送到快速傅里叶变换单元中，以对输入的第一和第二系数执行快速傅里叶变换，由此产生频域系数向量。 执行输入信号的快速傅里叶变换以将输入信号变换为频域信号矢量。 此后，将变换的信号矢量乘以每个要素的系数矢量，从而提供相乘结果。 乘法结果的逆快速傅立叶变换分别将逆变换结果的实数输出和虚数输出部分分别作为第一和第二系列输出信号。

公开(公告)号：US20060031276A1

公开(公告)日：2006-02-09

申请号：US10901108

申请日：2004-07-29

申请人： Yoshinori Kumamoto ,  Kazutaka Abe

发明人： Yoshinori Kumamoto ,  Kazutaka Abe

IPC分类号： G06F17/14

CPC分类号： G06F17/156 ,  G06F17/142

摘要： First and second coefficients are fed into a Fast Fourier Transform unit through real number input and imaginary number input portions thereof, respectively, to perform the Fast Fourier Transform of the entered first and second coefficients, thereby producing a frequency-domain coefficient vector. The Fast Fourier Transform of an input signal is performed to transform the input signal into a frequency-domain signal vector. Thereafter, the transformed signal vector is multiplied by the coefficient vector for each element, thereby providing a multiplication result. The Inverse Fast Fourier Transform of the multiplication result renders real number output and imaginary number output portions of the inverse transformation result as first and second series of output signals, respectively.

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：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：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。

公开(公告)号：US06546105B1

公开(公告)日：2003-04-08

申请号：US09431092

申请日：1999-11-01

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

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

IPC分类号： H04R500

CPC分类号： H04R5/00

摘要： A sound image localization apparatus comprises a signal source for outputting an audio signal; a localization angle input unit for receiving an angle of a sound image to be localized; a coefficient control unit for receiving sound image localization angle information from the localization angle input unit, reading coefficients from a coefficient memory in accordance with the information, and outputting the coefficients; first, second, and third multipliers for multiplying the audio signal output from the signal source by using first, second, and third coefficients output from the coefficient control means, respectively; a first signal processing unit for receiving the output from the second multiplier, and processing it by using a filter having a predetermined first frequency response; a second signal processing unit for receiving the output from the second multiplier, and processing it by using a filter having a predetermined second frequency response; a first adder for adding the output from the first multiplier and the output from the first signal processing unit to output the sum; a second adder for adding the output from the third multiplier and the output from the second signal processing unit to output the sum; a first output unit for outputting the output of the first adder; and a second output unit for outputting the output of the second adder.

摘要翻译： 声像定位装置包括用于输出音频信号的信号源; 定位角输入单元，用于接收要定位的声像的角度; 系数控制单元，用于从定位角输入单元接收声像定位角度信息，根据该信息从系数存储器读取系数，并输出系数; 第一，第二和第三乘法器，分别通过使用从系数控制装置输出的第一，第二和第三系数来乘以从信号源输出的音频信号; 第一信号处理单元，用于接收来自第二乘法器的输出，并通过使用具有预定的第一频率响应的滤波器对其进行处理; 第二信号处理单元，用于接收来自第二乘法器的输出，并通过使用具有预定的第二频率响应的滤波器进行处理; 第一加法器，用于将来自第一乘法器的输出和来自第一信号处理单元的输出相加以输出和; 第二加法器，用于将来自第三乘法器的输出和来自第二信号处理单元的输出相加以输出和; 第一输出单元，用于输出第一加法器的输出; 以及第二输出单元，用于输出第二加法器的输出。

公开(公告)号：US06304890B1

公开(公告)日：2001-10-16

申请号：US09244155

申请日：1999-02-03

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

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

IPC分类号： G06F738

CPC分类号： G06F7/552 ,  G10L19/0212

摘要： A device of the present invention is an exponential calculation device for calculating x{circumflex over ( )}(a/b) (where a and b are each an integer constant) for a given input value of x. The device includes: an input control section for outputting a value of x′, wherein x′=x when x≦A (where A is a threshold value within a variable range of x) and x′=x/2{circumflex over ( )}b when x>A; a core section for outputting a value of z′=x′{circumflex over ( )}(a/b); and an output control section for outputting a value of z, wherein z=z′ when x≦A and z=z′*2{circumflex over ( )}a when x>A.

摘要翻译： 本发明的装置是用于为x的给定输入值计算x {circumflex over（）}（a / b）（其中a和b各自为整数常数）的指数计算装置。 该装置包括：用于输出x'的值的输入控制部分，其中当x <= A时，x'= x（其中A是x的可变范围内的阈值），x'= x / 2 （）} b当x> A时; 用于输出z'= x'{circumflex over（）}（a / b）的值的核心部分; 以及输出控制部分，用于输出z的值，其中当x> A时z = z'，当x> A时，z = z'* 2 {circumflex over（）} a。

公开(公告)号：US06297754B1

公开(公告)日：2001-10-02

申请号：US09538674

申请日：2000-03-30

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

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

IPC分类号： H03M740

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对具有小于或等于预定数目的位的第一数据的一部分进行解码的结果之间的关系。 第二区域定义了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和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。 当第一数据的部分的解码未完成时，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以生成级联数据; 基于第二区域解码连接的数据; 并输出级联数据的解码结果。