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1. 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。

2. 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。

3. 发明授权

US6104758A Process and system for transferring vector signal with precoding for signal power reduction 失效
公开(公告)号：US6104758A
公开(公告)日：2000-08-15
申请号：US925181
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
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.

4. 发明授权

US6009123A Process and system for transferring vector signal with precoding for signal power reduction 失效
公开(公告)号：US6009123A
公开(公告)日：1999-12-28
申请号：US925496
申请日：1997-09-08
申请人： Takashi Kaku , Kyoko Hirao , Hideo Miyazawa
发明人： Takashi Kaku , Kyoko Hirao , Hideo Miyazawa
IPC分类号： H04L25/03 , H04L27/34 , H04L5/12
CPC分类号： H04L25/4975 , H04L25/03343 , H04L27/34 , H04L27/3411
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.

5. 发明授权

US5734681A Process and system for transferring vector signal with precoding for signal power reduction 失效
公开(公告)号：US5734681A
公开(公告)日：1998-03-31
申请号：US415926
申请日：1995-04-03
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.

6. 发明授权

US5440589A Frequency offset dealing modulator and demodulator apparatus 失效
标题翻译：频偏调制器和解调器
公开(公告)号：US5440589A
公开(公告)日：1995-08-08
申请号：US105628
申请日：1993-08-13
申请人： Takashi Kaku , Hiroyasu Murata , Kyoko Hirao
发明人： Takashi Kaku , Hiroyasu Murata , Kyoko Hirao
IPC分类号： H04L5/06 , H04L27/00 , H04L27/22 , H04L27/233 , H04L27/38 , H04L27/06
CPC分类号： H04L27/2332 , H04L27/0008 , H04L27/3854 , H04L5/06 , H04L2027/003 , H04L2027/0046 , H04L2027/0093
摘要： The invention provides a frequency offset dealing modulator and demodulator apparatus which modulates and demodulates transmission/reception data and is improved in that it can reproduce an accurate impulse when data are transmitted. The modulator and demodulator apparatus includes a modulator for modulating data, and a demodulator for demodulating a receive signal to reproduce such data. The demodulator includes a demodulation processing unit, a roll-off filter, a receive level adjustment unit, an equalizer, a carrier frequency offset removing correction signal generation unit, a normalizer, a multiplier and a sum calculation unit.
摘要翻译：本发明提供了一种频率偏移交易调制器和解调器装置，其对发送/接收数据进行调制和解调，并且在数据被发送时可以再现准确的脉冲。调制器和解调器装置包括用于调制数据的调制器和解调器，用于解调接收信号以再现这样的数据。解调器包括解调处理单元，滚降滤波器，接收电平调整单元，均衡器，载波偏移去除校正信号生成单元，归一化器，乘法器和和计算单元。

7. 发明授权

US5974090A Special eye pattern and modulation and demodulation method using the same 失效
标题翻译：特殊的眼图和调制解调方法采用相同的方式
公开(公告)号：US5974090A
公开(公告)日：1999-10-26
申请号：US529415
申请日：1995-09-18
申请人： Kyoko Hirao , Takashi Kaku , Hiroyasu Murata
发明人： Kyoko Hirao , Takashi Kaku , Hiroyasu Murata
IPC分类号： H04L7/04 , H04L27/18 , H04L5/12 , H04L23/02
CPC分类号： H04L27/18 , H04L7/04
摘要： The invention relates to an eye pattern which is generated upon transmission and also to a modulation and demodulation method which employs the eye pattern. The eye pattern and the modulation and demodulation method are improved in that, by devising the arrangement of signal points, the timing jitter amount is minimized and a frequency offset can be followed up accurately. The eye pattern to be generated upon transmission is constructed such that the arrangement of signal points thereof is not symmetrical with respect to the origin on a signal point arrangement plane on which the signal points are arranged.
摘要翻译：本发明涉及在发送时产生的眼图，以及采用眼图的调制和解调方法。通过设计信号点的布置，改善了眼图和调制和解调方法，使定时抖动量最小化并且可以准确地跟踪频率偏移。在发送时产生的眼图被构造为使得其信号点的布置在其上布置信号点的信号点布置平面上相对于原点不对称。

8. 发明授权

US5598433A Automatic equalizer and data mode convergence method 失效
标题翻译：自动均衡器和数据模式收敛方法
公开(公告)号：US5598433A
公开(公告)日：1997-01-28
申请号：US441014
申请日：1995-05-15
申请人： Takashi Kaku , Kyoko Hirao
发明人： Takashi Kaku , Kyoko Hirao
IPC分类号： H03H21/00 , H03H15/00 , H03H17/00 , H04B3/06 , H04L25/03 , H04B3/04
CPC分类号： H04L25/03038 , H04L2025/03375 , H04L2025/03471
摘要： An automatic equalizer which converges by a received signal and a data mode convergence method. A variance extracting unit extracts the variance of an output signal of a transversal automatic equalizing section and changes a predecision input signal to a proper level according to the extracted variance. A decision unit makes a decision for the predecision input signal which has been changed by the variance extracting unit and allocates the predecision input signal to a signal point. An amplitude error extracting unit extracts an amplitude error from a predecision input signal and a postdecision output signal of the decision unit and corrects the tap coefficients of the transversal automatic equalizing section according to the extracted amplitude error.
摘要翻译：一种由接收信号收敛的自动均衡器和数据模式收敛方法。方差提取单元提取横向自动均衡部分的输出信号的方差，并根据所提取的方差将预测切换输入信号改变到适当的水平。决定单元对由方差提取单元进行了改变的预先确定输入信号进行判定，并将预先确定输入信号分配给信号点。幅度误差提取单元从判定单元的预先确定输入信号和后决定输出信号中提取振幅误差，并根据提取的振幅误差校正横向自动均衡部分的抽头系数。

9. 发明授权

US5570390A Timing generation device and data transmission device having the timing generation device 失效
标题翻译：具有定时生成装置的定时生成装置和数据发送装置
公开(公告)号：US5570390A
公开(公告)日：1996-10-29
申请号：US9103
申请日：1993-01-26
申请人： Takashi Kaku , Kyoko Hirao
发明人： Takashi Kaku , Kyoko Hirao
IPC分类号： H04L7/06 , H04L5/06 , H04L7/027 , H04L7/04 , H04M11/00 , H04B3/06
CPC分类号： H04L7/027
摘要： In a timing generation device coupled to a transmission line having a main channel and a secondary channel, the main channel having a transmission speed higher than that of the secondary channel, a first unit extracts a timing signal component transmitted via the secondary channel. A second unit generates an internal timing signal in synchronism with the timing signal component, the internal timing signal being used to reproduce data transmitted via the main channel.
摘要翻译：在耦合到具有主信道和辅信道的传输线的定时生成装置中，主信道的传输速度高于副信道的传输速度，第一单元提取经由次信道发送的定时信号分量。第二单元与定时信号分量同步地产生内部定时信号，内部定时信号用于再现经由主信道发送的数据。

10. 发明授权

US07251289B2 Data transmission method and data transmission apparatus 失效
标题翻译：数据传输方法和数据传输装置
公开(公告)号：US07251289B2
公开(公告)日：2007-07-31
申请号：US11522154
申请日：2006-09-15
申请人： Takashi Kaku , Kyoko Hirao
发明人： Takashi Kaku , Kyoko Hirao
IPC分类号： H04L27/00
CPC分类号： H04L27/2628 , H04L1/0071 , H04L27/2602 , H04L27/2614 , H04L27/265
摘要： A data transmission method that includes the steps of: a) performing two-dimensional interleaving along a time axis and along a frequency axis; b) transmitting the thus-obtained data by a multi-carrier transmission form; and c) producing, by channel copy operation, data which is short for the number of channels required for fast inverse Fourier transform performed antecedent and subsequent to step a).
摘要翻译：一种数据传输方法，包括以下步骤：a）沿着时间轴和频率轴执行二维交织; b）通过多载波传输形式发送由此获得的数据; 以及c）通过信道复制操作产生对先前执行的快速傅立叶逆变换所需的信道数量短并且在步骤a）之后的数据。

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