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1. 发明授权

US06539468B1 Data copying system, data copying method, data reading apparatus, data writing apparatus and data recording medium 失效
标题翻译：数据复制系统，数据复制方法，数据读取装置，数据写入装置和数据记录介质
公开(公告)号：US06539468B1
公开(公告)日：2003-03-25
申请号：US09472479
申请日：1999-12-27
申请人： Mitsuhiro Inoue , Shunji Harada , Masayuki Kozuka , Makoto Tatebayashi , Yoshihisa Fukushima , Mitsuhiko Serikawa
发明人： Mitsuhiro Inoue , Shunji Harada , Masayuki Kozuka , Makoto Tatebayashi , Yoshihisa Fukushima , Mitsuhiko Serikawa
IPC分类号： G06F1214
CPC分类号： G06T1/0071 , G11B20/00086 , G11B20/00746 , G11B20/00768 , G11B20/00884 , G11B27/034 , G11B2020/10833 , G11B2220/2562
摘要： There is provided a copying system for copying information recorded on a first recording medium onto a second recording medium. The first recording medium is recorded with copying control information for representing conditions for permitting copying of the information recorded on the first recording medium, the copying control information being multiplexed within the information recorded on the first recording medium. The copying system includes: a reading section for reading the information from the first recording medium; a detection section for detecting the copying control information within the information read from the first recording medium; a modification section for, if the copying control information represents a condition that “only copying to a second generation copy is permitted”, modifying the copying control information so as to prohibit any further copying; and a writing section for writing information including the modified copying control information, onto the second recording medium.
摘要翻译：提供了一种用于将记录在第一记录介质上的信息复制到第二记录介质上的复印系统。第一记录介质被记录有用于表示允许复制记录在第一记录介质上的信息的条件的复制控制信息，复制控制信息被复用在记录在第一记录介质上的信息中。复制系统包括：用于从第一记录介质读取信息的读取部分; 检测部分，用于检测从第一记录介质读取的信息内的复制控制信息; 如果复制控制信息表示“仅允许复制到第二代复制件”的条件，则修改部分，修改复制控制信息以禁止进一步复制; 以及用于将包括修改的复制控制信息的信息写入第二记录介质的写入部分。

2. 发明授权

US5684881A Sound field and sound image control apparatus and method 失效
标题翻译：声场和声像控制装置及方法
公开(公告)号：US5684881A
公开(公告)日：1997-11-04
申请号：US247269
申请日：1994-05-23
申请人： Mitsuhiko Serikawa , Ryou Tagami , Akihisa Kawamura , Masaharu Matsumoto , Mikio Oda , Hiroko Numazu
发明人： Mitsuhiko Serikawa , Ryou Tagami , Akihisa Kawamura , Masaharu Matsumoto , Mikio Oda , Hiroko Numazu
IPC分类号： H04S1/00 , H04N5/00 , H04B1/00
CPC分类号： H04S1/007 , H04S1/002
摘要： The apparatus of the invention calculates filter coefficients for controlling sound field and sound image, based on a plurality of first impulse response signals and a pair of second impulse response signals. The plurality of first impulse response signals indicate impulse responses from loudspeakers reproducing audio signals to both ears of a listener. The pair of second impulse response signals indicate impulse responses from a reference loudspeaker at a position at which a sound image is localized to both ears of the listener. The apparatus includes: a feature extracting section for receiving the pair of second impulse response signals, for extracting parameters representing features of the pair of second impulse response signals, and for outputting parameter signals; a signal adjusting section for adjusting at least one of the plurality of first impulse response signals based on the parameter signals, and for outputting a pair of third impulse response signals having the same features as the extracted features; and a coefficient calculating section for calculating the filter coefficients for controlling the sound field and sound image, based on the plurality of first impulse response signals and the pair of third impulse response signals applied from the signal adjusting means.
摘要翻译：本发明的装置基于多个第一脉冲响应信号和一对第二脉冲响应信号来计算用于控制声场和声像的滤波器系数。多个第一脉冲响应信号指示从再现音频信号的扬声器到听众的双耳的脉冲响应。一对第二脉冲响应信号指示在声音图像被定位在收听者的两只耳朵的位置处的参考扬声器的脉冲响应。该装置包括：特征提取部分，用于接收一对第二脉冲响应信号，用于提取表示该对第二脉冲响应信号的特征的参数，并用于输出参数信号; 信号调整部分，用于基于参数信号调整多个第一脉冲响应信号中的至少一个，并输出具有与提取的特征相同特征的一对第三脉冲响应信号; 以及系数计算部分，用于基于从信号调节装置施加的多个第一脉冲响应信号和一对第三脉冲响应信号，来计算用于控制声场和声像的滤波器系数。

3. 发明授权

US5617478A Sound reproduction system and a sound reproduction method 失效
标题翻译：声音再现系统和声音再现方法
公开(公告)号：US5617478A
公开(公告)日：1997-04-01
申请号：US225602
申请日：1994-04-11
申请人： Ryou Tagami , Takeshi Norimatsu , Masaharu Matsumoto , Mikio Oda , Mitsuhiko Serikawa , Akihisa Kawamura , Hiroko Numazu
发明人： Ryou Tagami , Takeshi Norimatsu , Masaharu Matsumoto , Mikio Oda , Mitsuhiko Serikawa , Akihisa Kawamura , Hiroko Numazu
IPC分类号： H03G5/00 , H04R5/04 , H04R29/00 , H03G3/00
CPC分类号： H04R5/04 , H03G5/005
摘要： A sound reproduction system for automatically conducting a tone control for an audio signal according to the present invention includes: an input terminal for inputting an audio signal; a judgment circuit for determining a ratio between a stereophonic signal component and a monophonic signal component of the input audio signal and for outputting a judgment signal; a signal processing section for receiving the input audio signal and processing the input audio signal so as to generate an output signal having uniform transmission characteristics irrespective of the listening position; an adder for receiving the input audio signal and the output signal and for adding the input audio signal with the output signal at a certain addition ratio based on the judgment signal so as to generate an added signal; and a loudspeaker for receiving the added signal and for reproducing the added signal in a plurality of positions.
摘要翻译：根据本发明的用于自动进行音频信号的音调控制的声音再现系统包括：用于输入音频信号的输入端; 用于确定所述输入音频信号的立体声信号分量和单声道信号分量之间的比率并用于输出判断信号的判断电路; 信号处理部分，用于接收输入音频信号并处理输入音频信号，以产生具有均匀传输特性的输出信号，而与收听位置无关; 加法器，用于接收所述输入音频信号和所述输出信号，并且用于基于所述判断信号以一定的相加比例将所述输入音频信号与所述输出信号相加以产生相加信号; 以及用于接收所附加的信号并用于在多个位置再现附加的信号的扬声器。

4. 发明授权

US06408079B1 Distortion removal apparatus, method for determining coefficient for the same, and processing speaker system, multi-processor, and amplifier including the same 失效
标题翻译：失真去除装置，用于确定系数的方法，以及处理扬声器系统，多处理器和包括其的放大器
公开(公告)号：US06408079B1
公开(公告)日：2002-06-18
申请号：US08932859
申请日：1997-09-23
申请人： Taro Katayama , Mitsuhiko Serikawa
发明人： Taro Katayama , Mitsuhiko Serikawa
IPC分类号： H03G500
CPC分类号： H04R3/04 , H03G5/005 , H04R3/002
摘要： A distortion removal apparatus connected between a signal source and a signal input section of a distortion-generating system, for processing a signal output from the signal source so as to compensate for a distortion component generated in the system is provided. The distortion removal apparatus includes a frame division section for dividing a signal output from the signal source into data streams having a length of N while causing the data streams to partially overlap with one another; a Fourier transform section for performing Fourier transform of the data streams obtained by the frame division section in a time domain into a signal in a frequency domain; a memory section for storing N samples of first coefficients and N×N samples of second coefficients in the frequency domain. The distortion removal apparatus further includes an operation section for removing a distortion component from the output signal from the Fourier transform section by performing an operation based on the first coefficients and the output signal from the Fourier transform section and an operation based on the second coefficients and the output signal from the Fourier transform section; an inverse Fourier transform section for performing inverse Fourier transform of the output signal from the operation section into a signal in the time domain; and a frame synthesis section for sequentially connecting parts of the output signal from the inverse Fourier transform section.
摘要翻译：提供了一种连接在失真产生系统的信号源和信号输入部分之间的失真消除装置，用于处理从信号源输出的信号以补偿系统中产生的失真分量。失真消除装置包括一个帧分割部分，用于将从信号源输出的信号分割为长度为N的数据流，同时使数据流彼此部分重叠; 傅里叶变换部分，用于在时域中对由帧划分部分获得的数据流进行频域的信号的傅立叶变换; 用于存储频域中的第一系数的N个采样和第二系数的N×N个采样的存储部分。失真去除装置还包括一个操作部分，用于通过执行基于第一系数的操作和来自傅立叶变换部分的输出信号和基于第二系数的操作来从傅里叶变换部分的输出信号中去除失真分量，以及来自傅里叶变换部的输出信号; 逆傅里叶变换部，用于将来自操作部的输出信号的傅立叶逆变换为时域中的信号; 以及帧合成部分，用于顺序地连接来自逆傅里叶变换部分的输出信号的部分。

5. 发明授权

US5164840A Apparatus for supplying control codes to sound field reproduction apparatus 失效
标题翻译：用于向声场复制装置提供控制代码的装置
公开(公告)号：US5164840A
公开(公告)日：1992-11-17
申请号：US400190
申请日：1989-08-28
申请人： Akihisa Kawamura , Masaharu Matsumoto , Mitsuhiko Serikawa , Ryo Tagami , Katsuaki Sato , Hiroko Yoshida , Hikari Hashimoto
发明人： Akihisa Kawamura , Masaharu Matsumoto , Mitsuhiko Serikawa , Ryo Tagami , Katsuaki Sato , Hiroko Yoshida , Hikari Hashimoto
IPC分类号： G11B20/00 , G11B27/00 , G11B27/10 , G11B27/32 , G11B27/34 , H04N9/802 , H04S1/00
CPC分类号： G11B20/00992 , G11B27/007 , G11B27/107 , G11B27/322 , G11B27/34 , H04N9/802 , H04S1/007
摘要： Control codes for controlling processing of an audio signal by a sound field variation circuit to produce desired sound fields are recorded on a monaural track of a video tape concurrent with recording of video and audio signals, and can thereby be subsequently played back for producing sound fields which are respectively synchronized with video images.

6. 发明授权

US5144673A Reflection sound compression apparatus 失效
标题翻译：反射声压缩装置
公开(公告)号：US5144673A
公开(公告)日：1992-09-01
申请号：US623619
申请日：1990-12-07
申请人： Masaharu Matsumoto , Mitsuhiko Serikawa , Akihisa Kawamura , Hiroko Yoshida , Katsuaki Sato
发明人： Masaharu Matsumoto , Mitsuhiko Serikawa , Akihisa Kawamura , Hiroko Yoshida , Katsuaki Sato
IPC分类号： G10K15/00 , E04B1/99 , G10K15/08 , H03G5/24
CPC分类号： E04B1/99 , G10K15/08
摘要： A reflection sound compression apparatus extracts and compresses, most appropriately with a physical evaluation value, an impulse response of a hall, etc. which is obtained by calculation and actual experiments to reflection sounds in a number required by a sound field controller by using a learning identification method.

7. 发明授权

US5073946A Thin speaker having an enclosure with an open portion and a closed portion 失效
标题翻译：具有开放部分和封闭部分的外壳的薄型扬声器
公开(公告)号：US5073946A
公开(公告)日：1991-12-17
申请号：US441918
申请日：1989-11-28
申请人： Katsuaki Satoh , Kazue Sato , Kousaku Murata , Tsuneo Tanaka , Shuji Saiki , Satoshi Takayama , Hiroyuki Takewa , Mitsuhiko Serikawa , Seiichi Ishikawa , Sawako Usuki , Yoichi Kimura , Shuichi Obata
发明人： Katsuaki Satoh , Kazue Sato , Kousaku Murata , Tsuneo Tanaka , Shuji Saiki , Satoshi Takayama , Hiroyuki Takewa , Mitsuhiko Serikawa , Seiichi Ishikawa , Sawako Usuki , Yoichi Kimura , Shuichi Obata
IPC分类号： H04R1/28 , H04R1/34 , H04R7/04
CPC分类号： H04R1/2834 , H04R1/345 , H04R7/04
摘要： A speaker which is thin but which is capable of providing high-fidelity reproduction and ensuring a suitable level of sound pressure even when it is brought close to a wall. A closed chamber is formed behind one part of a disphragm mounted in an enclosure, and an open chamber is formed behind another part of the diaphragm. At least one voice coil driver unit is connected to the diaphragm. The phase difference between sounds radiated from the front and rear surfaces of the diaphragm is increased as large as possible by using an acoustic duct for the sound radiated through the open chamber, thereby minimizing cancellation of sounds and improving the sound pressure level.

8. 发明授权

US4899390A Thin speaker having an enclosure within an open portion and a closed portion 失效
标题翻译：薄型扬声器具有开口部分内的外壳和封闭部分
公开(公告)号：US4899390A
公开(公告)日：1990-02-06
申请号：US96528
申请日：1987-09-15
申请人： Hiroyuki Takewa , Mitsuhiko Serikawa , Seiichi Ishikawa , Sawako Usuki , Yoichi Kimura , Shuichi Obata
发明人： Hiroyuki Takewa , Mitsuhiko Serikawa , Seiichi Ishikawa , Sawako Usuki , Yoichi Kimura , Shuichi Obata
IPC分类号： H04R1/28 , H04R1/34 , H04R7/04
CPC分类号： H04R1/2834 , H04R1/345 , H04R7/04
摘要： A speaker which is thin but which is capable of providing high-fidelity reproduction and ensuring a suitable level of sound pressure even when it is brought close to a wall. A closed chamber is formed behind one part of a diaphragm mounted in an enclosure, and an open chamber is formed behind another part of the diaphragm. At least one voice coil drive unit is connected to the diaphragm. The phase difference between sounds radiated from the front and rear surfaces of the diaphragm is increased as large as possible by using an acoustic duct for the sound radiated through the open chamber, thereby minimizing cancellation of sounds and improving the sound pressure level.
摘要翻译：扬声器虽然薄但能够提供高保真的再现性，并且即使当靠近墙壁时也能确保合适的声压水平。在安装在外壳中的隔膜的一部分之后形成封闭的室，并且隔膜的另一部分后面形成开放室。至少一个音圈驱动单元连接到隔膜。通过使用用于通过开放室辐射的声音的声管，尽可能地增大从隔膜的前表面和后表面辐射的声音之间的相位差，从而最小化声音的消除和提高声压级。

9. 发明授权

US4751739A Apparatus and method for controlling tone quality 失效
标题翻译：用于控制音质的装置和方法
公开(公告)号：US4751739A
公开(公告)日：1988-06-14
申请号：US921768
申请日：1986-10-22
申请人： Mitsuhiko Serikawa , Akihisa Kawamura , Hiroyuki Takewa , Katsuaki Sato
发明人： Mitsuhiko Serikawa , Akihisa Kawamura , Hiroyuki Takewa , Katsuaki Sato
IPC分类号： H03G5/02 , H03G5/16 , H04R3/14 , H03G5/00
CPC分类号： H03G5/165
摘要： A digital signal represents a desired amplitude frequency characteristic. A desired transmission characteristic is derived from the desired amplitude frequency characteristic. A sound signal is processed in accordance with the desired transmission characteristic. The processed sound signal is converted by a speaker into corresponding sound. The process of the sound signal corrects and compensates for the original sound pressure frequency characteristic of the speaker and thereby actualizes the desired amplitude frequency characteristic.
摘要翻译：数字信号表示期望的振幅频率特性。从期望的幅度频率特性导出期望的传输特性。根据期望的传输特性来处理声音信号。经处理的声音信号由扬声器转换为相应的声音。声音信号的处理校正和补偿扬声器的原始声压频率特性，从而实现期望的振幅频率特性。

10. 发明授权

US06477490B2 Audio signal compression method, audio signal compression apparatus, speech signal compression method, speech signal compression apparatus, speech recognition method, and speech recognition apparatus 有权
标题翻译：音频信号压缩方法，音频信号压缩装置，语音信号压缩方法，语音信号压缩装置，语音识别方法和语音识别装置
公开(公告)号：US06477490B2
公开(公告)日：2002-11-05
申请号：US09892745
申请日：2001-06-28
申请人： Yoshihisa Nakatoh , Takeshi Norimatsu , Mineo Tsushima , Tomokazu Ishikawa , Mitsuhiko Serikawa , Taro Katayama , Junichi Nakahashi , Yoriko Yagi
发明人： Yoshihisa Nakatoh , Takeshi Norimatsu , Mineo Tsushima , Tomokazu Ishikawa , Mitsuhiko Serikawa , Taro Katayama , Junichi Nakahashi , Yoriko Yagi
IPC分类号： G10L1906
CPC分类号： H04B1/665 , G10L2019/0005
摘要： An audio signal compression apparatus for compressively coding an input audio signal comprises a time-to-frequency transformation unit for transforming the input audio signal to a frequency domain signal; a spectrum envelope calculation unit for calculating a spectrum envelope having different resolutions for different frequencies, from the input audio signal, using a weighting function on frequency based on human auditory characteristics; a normalization unit for normalizing the frequency domain signal using the spectrum envelope to obtain a residual signal; a power normalization unit for normalizing the residual signal by the power; an auditory weighting calculation unit for calculating weighting coefficients on frequency, based on the spectrum of the input audio signal and human auditory characteristics; and a multi-stage quantization device having plural stages of vector quantizers connected in series, to which the normalized residual signal is input, and at least one of the vector quantizers quantizing the residual signal using the weighting coefficients. Therefore, a low frequency band, which is auditively important, can be analyzed with a higher frequency resolution as compared with a high frequency band, whereby efficient signal compression utilizing human auditory characteristics is realized.
摘要翻译：一种用于对输入音频信号进行压缩编码的音频信号压缩装置包括用于将输入音频信号变换为频域信号的时间 - 频率变换单元; 频谱包络计算单元，用于根据输入的音频信号，使用基于人的听觉特征的频率的加权函数来计算用于不同频率的不同分辨率的频谱包络; 归一化单元，用于使用频谱包络对频域信号进行归一化以获得残余信号; 功率归一化单元，用于通过所述功率归一化所述残余信号; 听觉加权计算单元，用于基于输入音频信号的频谱和人类听觉特征来计算频率上的加权系数; 以及具有串联连接的多级矢量量化器的多级量化装置，其中输入归一化残差信号，以及使用加权系数量化残差信号的矢量量化器中的至少一个。因此，与高频带相比，可以以更高的频率分辨率来分析具有重要意义的低频带，从而实现利用人类听觉特性的有效信号压缩。

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