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1. 发明授权

US5559799A Modulator and demodulator apparatus as well as modulation and demodulation method 失效
标题翻译：调制器和解调器装置以及调制和解调方法
公开(公告)号：US5559799A
公开(公告)日：1996-09-24
申请号：US108536
申请日：1993-08-19
申请人： Hiroyasu Murata , Hideo Miyazawa , Takashi Kaku
发明人： Hiroyasu Murata , Hideo Miyazawa , Takashi Kaku
IPC分类号： H04L27/00 , H04L5/06 , H04L27/22 , H04L27/233 , H04L27/38 , H04B1/38 , H04J1/14
CPC分类号： H04L5/06 , H04L27/2338
摘要： A modulator and demodulator apparatus for use with a network is provided. The modulator and demodulator apparatus comprises a modulation section which includes a timing phase discrimination section for receiving, as an input signal thereto, a demodulation vector signal sampled into a digital value and discriminating to which one of a plurality of regions of a discrimination plane the phase of the input signal belongs. The timing phase discrimination section supplies, as an input to a next processing stage, a rotation vector obtained by rotating an input vector, moves the rotation vector to a quadrant which includes a reference discrimination region of the discrimination plane and performs, when the vector after the movement is not in the reference discrimination region, a predetermined calculation. When the vector after the movement comes to the reference discrimination region, another calculation is performed. This discriminates a timing phase of the input vector from the result of the calculation.
摘要翻译：提供一种用于网络的调制器和解调器装置。调制器和解调器装置包括调制部分，其包括定时相位鉴别部分，用于将采样成数字值的解调矢量信号作为输入信号，并将鉴别面的多个区域中的哪一个区分为相位的输入信号属于。定时相位识别部将作为输入向下一个处理级的输入提供通过旋转输入矢量而获得的旋转矢量，将旋转矢量移动到包括鉴别面的参考识别区域的象限，并且当后向量运动不在参考识别区域中，所以是预定的计算。当运动之后的矢量进入参考识别区域时，进行另一次计算。这样就从计算结果中辨别出输入向量的定时相位。

2. 发明授权

US07110465B2 Noise canceling method and apparatus 失效
公开(公告)号：US07110465B2
公开(公告)日：2006-09-19
申请号：US09819395
申请日：2001-03-28
申请人： Takashi Kaku , Hideo Miyazawa , Takahiro Kurakata , Hiroyasu Murata
发明人： Takashi Kaku , Hideo Miyazawa , Takahiro Kurakata , Hiroyasu Murata
IPC分类号： H04B15/00
CPC分类号： H04B1/123 , H04B1/1036 , H04L27/2647
摘要： In a noise canceling method and an apparatus therefor which notices the colored noise looked macroscopically, positively cancels the dominant noise component in the low frequency band, shifts the S/N value to plus, and can extract the reception signal buried in the low frequency band and having a comparatively high level, a signal in which a time axis, an amplitude, and a phase are specified or a zero-point signal is inserted into a transmission signal by an inserter, a noise component is interpolated by using the specified signal or the zero-point signal by a noise canceler, and an originally transmitted signal is regenerated by subtracting the noise component from the reception signal.

3. 发明授权

US5537437A Initialization equalization for modulation and demodulation using special training pattern 失效
标题翻译：使用特殊训练模式进行调制和解调的初始化均衡
公开(公告)号：US5537437A
公开(公告)日：1996-07-16
申请号：US505479
申请日：1995-07-21
申请人： Takashi Kaku , Hiroyasu Murata , Noboru Kawada , Kyoko Hirao , Hideo Miyazawa , Yuri Nigaki
发明人： Takashi Kaku , Hiroyasu Murata , Noboru Kawada , Kyoko Hirao , Hideo Miyazawa , Yuri Nigaki
IPC分类号： H04B3/10 , H04L7/04 , H04L27/01 , H04L27/22 , H03H7/30
CPC分类号： H04L7/041 , H04L7/046
摘要： A modulation and demodulation system suitable for use with a modem (modulator and demodulator apparatus) of a first polling type. The system allows reproduction of a signal necessary for initialization of a reception section of a modulator and demodulator apparatus with certainty in a short training time. The modulation and demodulation system is constructed such that, upon transmission of data, training data of a particular pattern are modulated and transmitted prior to transmission of the data, and such training data are demodulated by demodulation means and initialization of a reception section of the modulation and demodulation system is performed using the demodulation training data. The pattern of the training data to be transmitted includes an arrangement of signals wherein signals having phases different by 180.degree. from each other are arranged alternately, and a signal having the same phase as the last signal is arranged intermediately.
摘要翻译：适用于第一轮询类型的调制解调器（调制器和解调器装置）的调制和解调系统。该系统允许在短时间内确定地再现调制器和解调器装置的接收部分的初始化所需的信号。调制和解调系统被构造成使得在传输数据时，在传输数据之前对特定模式的训练数据进行调制和发送，并且这样的训练数据由解调装置解调并且调制的接收部分的初始化并且使用解调训练数据执行解调系统。要发送的训练数据的模式包括信号的布置，其中具有彼此相差180°的相位的信号交替布置，并且具有与最后信号相同相位的信号被布置在中间。

4. 发明授权

US07394848B2 Method and apparatus for time equalization 失效
标题翻译：时间均衡的方法和装置
公开(公告)号：US07394848B2
公开(公告)日：2008-07-01
申请号：US10347154
申请日：2003-01-15
申请人： Takashi Kaku , Hiroyasu Murata , Hideo Miyazawa
发明人： Takashi Kaku , Hiroyasu Murata , Hideo Miyazawa
IPC分类号： H03H7/30
CPC分类号： H04L27/2602 , H04L25/03044 , H04L27/2655 , H04L27/2662 , H04L27/2676 , H04L2025/03477
摘要： Timing phase information is extracted from a power spectrum of a received signal whose amplitude is modulated per frame or sub-frame, and timing phase synchronization of the received signal is performed with the timing phase information. Also, a vector signal of the power spectrum is generated, the vector signal is multiplied by another vector signal to be rotated, a sign decision of the rotated vector signal is performed, a result of the sign decision is integrated to be outputted as the timing phase information, and a vector conversion is performed to the integrated value to be fed back as the other vector signal.
摘要翻译：从幅度调制每帧或子帧的接收信号的功率谱中提取定时相位信息，并且利用定时相位信息执行接收信号的定时相位同步。此外，产生功率谱的矢量信号，将矢量信号乘以要旋转的另一矢量信号，执行旋转矢量信号的符号判定，将积分判定结果作为定时输出对作为另一向量信号反馈的积分值进行矢量变换。

5. 发明申请

US20060256890A1 Noise cancelling method and apparatus 审中-公开
标题翻译：降噪方法和装置
公开(公告)号：US20060256890A1
公开(公告)日：2006-11-16
申请号：US11492523
申请日：2006-07-25
申请人： Takashi Kaku , Hideo Miyazawa , Takahiro Kurakata , Hiroyasu Murata
发明人： Takashi Kaku , Hideo Miyazawa , Takahiro Kurakata , Hiroyasu Murata
IPC分类号： H04B15/00
CPC分类号： H04B1/123 , H04B1/1036 , H04L27/2647
摘要： In a noise canceling method and an apparatus therefor which notices the colored noise looked macroscopically, positively cancels the dominant noise component in the low frequency band, shifts the S/N value to plus, and can extract the reception signal buried in the low frequency band and having a comparatively high level, a signal in which a time axis, an amplitude, and a phase are specified or a zero-point signal is inserted into a transmission signal by an inserter, a noise component is interpolated by using the specified signal or the zero-point signal by a noise canceler, and an originally transmitted signal is regenerated by subtracting the noise component from the reception signal.
摘要翻译：在一种噪声消除方法及其装置中，注意到宏观上看到的着色噪声，肯定地抵消了低频带中的主要噪声分量，将S / N值移位为正，并且可以提取埋在低频带中的接收信号并且具有相对较高的电平，其中指定了时间轴，振幅和相位的信号或者由插入器将零点信号插入到发送信号中，通过使用指定的信号来内插噪声分量，或零点信号通过噪声消除器，并且通过从接收信号中减去噪声分量来再生原始发送的信号。

6. 发明授权

US06978937B2 METHOD OF READING INFORMATION AND APPARATUS THEREFOR, METHOD OF ACQUIRING SIGNAL FOR USE WITH INFORMATION READING APPARATUS, METHOD OF PROCESSING BAND LIMITATION, METHOD OF EXTRACTING TIMING POINT AMPLITUDE AND METHOD OF PROCESSING SIGNAL THEREOF, READ SIGNAL PROCESSING UNIT, AND METHOD OF PROCESSING READ SIGNAL AND PROCESSING APPARATUS THEREOF 有权
标题翻译：信息读取装置及其装置的方法，采用信息读取装置的信号获取方法，处理限幅方法，提取时序点振幅的方法及其处理信号的方法，读信号处理装置及处理读信号的方法其处理装置
公开(公告)号：US06978937B2
公开(公告)日：2005-12-27
申请号：US10622469
申请日：2003-07-21
申请人： Isao Iwaguchi , Takashi Kaku , Hiroyasu Murata , Kozo Yamazaki , Masanori Ohkawa , Mitsuo Watanabe , Hideo Miyazawa
发明人： Isao Iwaguchi , Takashi Kaku , Hiroyasu Murata , Kozo Yamazaki , Masanori Ohkawa , Mitsuo Watanabe , Hideo Miyazawa
IPC分类号： G06K7/14 , G06K19/06 , G06K7/10
CPC分类号： G06K7/14
摘要： A method of reading information which makes it possible to suppress the size of hardware and a price thereof and to improve an S/N ratio of a reading signal and reading resolution, wherein even if depth of field for reading is enlarged or a concave/convex portion or a blurred portion is left on the reading face, reading precision can be improved. The method includes steps of acquiring from a medium 1, a signal containing binary digit information having a predetermined information length and a one-dimensional arrangement, extracting information concerning an elemental unit length of the information length of the binary digit information from the acquired signal, and reading a ratio of the binary digit information to the information length based on the extracted elemental unit length information.
摘要翻译：一种读取信息的方法，其可以抑制硬件的尺寸和价格，并且提高读取信号和读取分辨率的S / N比，其中即使用于读取的景深或扩大的凹凸部分或模糊部分留在读取面上，可以提高读取精度。该方法包括以下步骤：从介质1获取包含具有预定信息长度的二进制数字信息和一维排列的信号，从获取的信号中提取关于二进制数字信息的信息长度的元素单位长度的信息，以及基于所提取的基本单位长度信息读取二进制数字信息与信息长度的比率。

7. 发明授权

US6026122A Process and system for transferring vector signal with precoding for signal power reduction 失效
标题翻译：用于传输矢量信号与预编码的信号功率降低的过程和系统
公开(公告)号：US6026122A
公开(公告)日：2000-02-15
申请号：US925495
申请日：1997-09-09
申请人： Takashi Kaku , Kyoko Hirao , Hideo Miyazawa
发明人： Takashi Kaku , Kyoko Hirao , Hideo Miyazawa
IPC分类号： H03H15/00 , H03H17/00 , H03H21/00 , H03M13/23 , H04B3/04 , H04L25/03 , H04L27/34 , H04L5/12 , H04L23/02
CPC分类号： H04L27/3411 , H04L25/03343 , H04L25/4975 , H04L27/34
摘要： A transfer process in which, an original vector signal is precoded to an intermediately-precoded vector signal, and the extended modulo operation is performed when the intermediately-precoded vector signal is located outside a predetermined extended-modulo limit area, and the precoded vector signal is transferred through a system having a predetermined filtering characteristic. From the transferred vector signal, the original vector signal is detected, based on a relationship between the vector components of the original vector signal and the transferred vector signal.
摘要翻译：原始矢量信号被预编码为中间预编码矢量信号的传送处理，当中间预编码矢量信号位于预定的扩展模数限制区域之外时执行扩展模运算，并且预编码矢量信号通过具有预定滤波特性的系统传送。根据传送的矢量信号，基于原始矢量信号的矢量分量与传送的矢量信号之间的关系来检测原始矢量信号。

8. 发明授权

US6002712A Timing phase control apparatus and timing phase control method 失效
标题翻译：定时相位控制装置和定时相位控制方法
公开(公告)号：US6002712A
公开(公告)日：1999-12-14
申请号：US898493
申请日：1997-07-22
申请人： Takashi Kaku , Noboru Kawada , Hideo Miyazawa
发明人： Takashi Kaku , Noboru Kawada , Hideo Miyazawa
IPC分类号： H03H17/02 , H03H17/08 , H04B3/06 , H04L7/02 , H04L27/22 , H04B1/38 , H03K5/159
CPC分类号： H04L7/0029 , H04L7/0087 , H04L7/007
摘要： The present invention discloses a timing phase control apparatus which is particularly suitable for use in a modem used for very high speed data transmission employing a metallic line. The timing phase control apparatus includes a timing phase extracting portion to extract timing phase information from an input signal, a timing phase control filter portion to make a timing phase control to the input signal depending upon the timing phase information from the timing phase extracting portion through filter processing using a coefficient operation having a preset impulse response characteristic, and a filter processing coefficient determining portion to determine a coefficient used for the filter processing in the timing phase control filter portion depending upon the timing phase information and information about an approximate expression of the impulse response characteristic. An accuracy of a tap coefficient can be improved while reducing an amount of information about the tap coefficient, which should be stored.
摘要翻译：本发明公开了一种定时相位控制装置，其特别适用于采用金属线路进行超高速数据传输的调制解调器。定时相位控制装置包括定时相位提取部分，用于从输入信号提取定时相位信息;定时相位控制滤波器部分，用于根据来自定时相位提取部分的定时相位信息对输入信号进行定时相位控制，使用具有预设脉冲响应特性的系数操作的滤波处理和滤波处理系数确定部分，以根据定时相位信息确定用于定时相位控制滤波器部分中的滤波处理的系数，以及关于近似表达式的信息脉冲响应特性。可以减少抽头系数的精度，同时减少应该存储的抽头系数的信息量。

9. 发明授权

US5719907A Phase jitter extraction circuit and phase jitter cancellation circuit 失效
标题翻译：相位抖动提取电路和相位抖动消除电路
公开(公告)号：US5719907A
公开(公告)日：1998-02-17
申请号：US534161
申请日：1995-09-26
申请人： Takashi Kaku , Hideo Miyazawa
发明人： Takashi Kaku , Hideo Miyazawa
IPC分类号： H04B3/04 , H04B3/06 , H04L1/20 , H04L25/02 , H04L25/08 , H04L27/22 , H04L27/38 , H04L25/38 , H04L5/16
CPC分类号： H04L27/3872 , H04L1/205
摘要： The invention provides a phase jitter extraction circuit and a phase jitter cancellation circuit for use with a reception section of a communication apparatus such as a modem used to transmit data using a telephone line or a private line, which are improved in that noise of a signal is prevented from increasing to suppress phase jitters with a high degree of accuracy and high noise components can be suppressed irrespective of the power of the input signal. The phase jitter extraction circuit includes a phase jitter detection section for detecting phase jitters from input/output information of a signal discriminator, a phase jitter forecasting section for forecasting phase jitters which will be produced later from the phase jitters detected by the phase jitter detection section, a selector for selectively outputting the phase jitters detected by the phase jitter detection section or the forecast phase jitters obtained by the phase jitter forecasting section, and a selector control section for discriminating a region of signal points received by the communication apparatus by way of a transmission line and controlling the selector in accordance with a result of the discrimination.
摘要翻译：本发明提供一种相位抖动提取电路和相位抖动消除电路，用于与诸如调制解调器之类的通信装置的接收部分一起使用，该调制解调器用于使用电话线路或专用线路传输数据，防止增加以高精度抑制相位抖动，并且与输入信号的功率无关，可以抑制高噪声分量。相位抖动提取电路包括：相位抖动检测部分，用于从信号鉴别器的输入/输出信息中检测相位抖动;相位抖动预测部分，用于预测稍后将由相位抖动检测部分检测的相位抖动产生的相位抖动; 选择器，用于选择性地输出由相位抖动检测部分检测的相位抖动或由相位抖动预测部分获得的预测相位抖动，以及选择器控制部分，用于通过通信装置接收的信号点的区域传输线，并根据鉴别结果控制选择器。

10. 发明授权

US6078624A Judging method and a precoding apparatus 失效
标题翻译：判断方法和预编码装置
公开(公告)号：US6078624A
公开(公告)日：2000-06-20
申请号：US829065
申请日：1997-03-31
申请人： Takashi Kaku , Noboru Kawada , Hideo Miyazawa , Yuri Nigaki
发明人： Takashi Kaku , Noboru Kawada , Hideo Miyazawa , Yuri Nigaki
IPC分类号： H04L27/18 , H04L25/03 , H04L25/497 , H04L5/12 , H04L23/02
CPC分类号： H04L25/4975 , H04L25/03343 , H04L25/497
摘要： A preceding apparatus for calculating a difference between an inputted signal point and an output signal obtained one timing before and outputting the difference has a position information judging unit for judging which position on a vector plane the output signal obtained one timing before is located in, and a signal point selecting storage for outputting any signal point among a plurality of signal points generated correspondingly to a signal point inputted from the outside with a result of the judgement fed form the position information judging unit nd the signal point inputted from the outside as an address, thereby decreasing the number of cycles required by a DSP process and realizing a precoder process in a degree achieved hitherto.
摘要翻译：一种用于计算输入信号点和之前获得的一个定时之前的输出信号之间的差并输出该差的先前装置具有位置信息判断单元，用于判断向量平面上哪一个位置在一个定时获得的输出信号，以及信号点选择存储器，用于输出与从外部输入的信号点相对应地生成的多个信号点中的任何信号点，其中从位置信息判断单元输入的判断结果将从外部输入的信号点作为地址，从而减少了DSP处理所需的周期数，并实现了迄今为止所达到的程度的预编码器处理。

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