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41. 发明授权

US06751177B1 Signal processor 有权
标题翻译：信号处理器
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。

42. 发明授权

US06631352B1 Decoding circuit and reproduction apparatus which mutes audio after header parameter changes 有权
标题翻译：标题参数改变后，使音频静音的解码电路和再现设备
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。

43. 发明授权

US06546105B1 Sound image localization device and sound image localization method 失效
标题翻译：声像定位装置和声像定位方法
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。

44. 发明授权

US06473374B1 Method of transmitting data among a plurality of LSIs, and DVD-audio 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DVD音频再现装置
公开(公告)号：US06473374B1
公开(公告)日：2002-10-29
申请号：US09598334
申请日：2000-06-21
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 DVD-audio 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DVD音频再现装置，其中防止在输入到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。

45. 发明授权

US06304890B1 Exponential calculation device and decoding device 有权
标题翻译：指数计算装置和解码装置
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。

46. 发明授权

US06297754B1 Decoding device 有权
标题翻译：解码设备
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。

47. 发明授权

US06262965B1 Optical disk 有权
标题翻译：光盘
公开(公告)号：US06262965B1
公开(公告)日：2001-07-17
申请号：US09172448
申请日：1998-10-14
申请人： Masatoshi Shimbo , Ryoji Suzuki , Yoshihiro Mori , Akihisa Kawamura
发明人： Masatoshi Shimbo , Ryoji Suzuki , Yoshihiro Mori , Akihisa Kawamura
IPC分类号： G11B700
CPC分类号： G11B20/1251 , G11B27/3027 , G11B2220/2562
摘要： In an optical disk, data are recorded by using a hierarchical file structure in which a frame is composed of digitized data, a packet is composed of at least one frame, and a pack is composed of at least one packet. In this structure, the pack is composed of an integral number of packets, each packet being completed, and each of the packets is composed of an integral number of frames, each frame being completed. Therefore, there is no possibility that one frame is assigned over two or more different packets and one packet is assigned over two or more different packs. Since an integral number of frames are assigned in each packet, when a packet header is detected, reproduction of data can be carried out from the beginning of each packet.
摘要翻译：在光盘中，通过使用其中帧由数字化数据组成的分层文件结构记录数据，分组由至少一个帧组成，并且分组由至少一个分组组成。在该结构中，该包由整数个分组组成，每个分组完成，并且每个分组由整数个帧组成，每个帧完成。因此，不可能在两个或更多个不同的分组上分配一个帧，并且在两个或更多个不同的分组上分配一个分组。由于在每个分组中分配了整数个帧，因此当检测到分组报头时，可以从每个分组的开始执行数据的再现。

48. 发明授权

US5381482A Sound field controller 失效
标题翻译：声场控制器
公开(公告)号：US5381482A
公开(公告)日：1995-01-10
申请号：US12265
申请日：1993-02-01
申请人： Masaharu Matsumoto , Mitsuhiko Serikawa , Akihisa Kawamura , Hiroko Numazu , Takeshi Norimatsu , Ryo Tagami , Mikio Oda
发明人： Masaharu Matsumoto , Mitsuhiko Serikawa , Akihisa Kawamura , Hiroko Numazu , Takeshi Norimatsu , Ryo Tagami , Mikio Oda
IPC分类号： H04S1/00 , H04S3/00 , H04S5/02 , H04S7/00
CPC分类号： H04S1/002 , H04S7/305 , H04S1/007 , H04S2400/01 , H04S5/00
摘要： A sound field controller for generating apparent sound sources by adjusting the amplitude and delay time of a sound signal so that the sound will be perceived by plural listeners as sound coming from a location separated from the specific location of the front speakers, and for additionally controlling the effect of the apparent sound sources by evaluating the attributes of the source sound signal. The controller includes FIR filters for generating a left sound pattern signal, FIR filters for generating a right sound pattern signal, a first delay circuit for delaying the left and right sound pattern signals by a first predetermined time and applying the delayed left and right sound pattern signals to the left and right speakers, respectively, to introduce an apparent sound source located left rear of a center listener; and a second delay circuit for delaying the left and right sound pattern signals by a second predetermined time and applying the delayed left and right sound pattern signals to the right and left speakers, respectively, to introduce an apparent sound source located right rear of a center listener.
摘要翻译：一种声场控制器，用于通过调节声音信号的幅度和延迟时间来产生视在声源，使得声音将被多个听众感知为来自与前置扬声器的特定位置分离的位置的声音，并且用于另外控制通过评估源声音信号的属性来观察视声源的影响。控制器包括用于产生左声音模式信号的FIR滤波器，用于产生右声音模式信号的FIR滤波器，用于将左右声音图形信号延迟第一预定时间的第一延迟电路，并将延迟的左右声音模式分别向左右扬声器发出信号，引入位于中心听众左后方的明显声源; 以及第二延迟电路，用于将左右声音图形信号延迟第二预定时间，并将延迟的左右声音图案信号分别施加到左右扬声器，以引入位于中心右后方的表观声源听众

49. 发明授权

US5073942A Sound field control apparatus 失效
标题翻译：声场控制装置
公开(公告)号：US5073942A
公开(公告)日：1991-12-17
申请号：US645476
申请日：1991-01-24
申请人： Hiroko Yoshida , Mitsuhiko Serikawa , Akihisa Kawamura , Masaharu Matsumoto , Katsuaki Sato
发明人： Hiroko Yoshida , Mitsuhiko Serikawa , Akihisa Kawamura , Masaharu Matsumoto , Katsuaki Sato
IPC分类号： G10H1/18 , G10H1/00 , H03H17/00 , H03H17/06
CPC分类号： G10H1/0091 , G10H2210/301 , Y10S84/26
摘要： A sound field switcher inputs an output sound field signal from a sound field producer. The inputted sound field signal is delayed sequentially by plural delayers, after which they are multiplied by coefficients by plural multipliers, and the multiplied results are all added by an adder. Coefficients stored in an area of a memory indicated by a coefficient counter are read out and set to the plural multipliers. The sound field switcher carries out control of the timing for switching the sound field signal produced by the sound field producer and the timing for the coefficient counter to commence counting. Assuming the time required for switching the sound field to be N sampling periods, in case of carrying out a sound field switching from a sound field A to a sound field B, a sound field switching controller issues an order to the coefficient counter so as to count up one by one from 0 to N, and on each count the coefficients stored in an area of the coefficient memory is set to the multipliers. When the count value of the coefficient counter comes to (N/2) or nearest to (N/2), the sound field switching controller issues an order to the sound field producer to output the sound field signal of the sound field B. When the count value of the coefficient counter comes to N, the switching from the sound field A to the sound field B is completed.

50. 发明授权

US5023913A Apparatus for changing a sound field 失效
标题翻译：用于改变声场的装置
公开(公告)号：US5023913A
公开(公告)日：1991-06-11
申请号：US358282
申请日：1989-05-26
申请人： Masaharu Matsumoto , Katsuaki Satoh , Seiichi Ishikawa , Mitsuhiko Serikawa , Akihisa Kawamura , Hikari Hashimoto
发明人： Masaharu Matsumoto , Katsuaki Satoh , Seiichi Ishikawa , Mitsuhiko Serikawa , Akihisa Kawamura , Hikari Hashimoto
IPC分类号： H03G5/16 , H04R3/12
CPC分类号： H03G5/165 , H04R3/12
摘要： An apparatus for changing a sound field, comprising at least two signal processing means, which can smoothly and continuously switch a sound field into an arbitrary sound field without a break of signals by alternately switching one of the signal processing means into the other.

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