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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

US5583887A Transmission signal processing apparatus 失效
标题翻译：传输信号处理装置
公开(公告)号：US5583887A
公开(公告)日：1996-12-10
申请号：US31621
申请日：1993-03-15
申请人： Hiroyasu Murata , Takashi Kaku
发明人： Hiroyasu Murata , Takashi Kaku
IPC分类号： H04L27/00 , H03H17/00 , H03H17/06 , H04J1/05 , H04L25/05 , H03H7/30 , H04L27/04
CPC分类号： H03H17/0657 , H04J1/05 , H04L25/05
摘要： A roll off filter portion for an input transmission point signal executes a roll-off filtering process and an interpolation process with a multiple of two at the same time. The roll-off filtering process is adapted to form a frequency spectrum characteristic in a cosine roll-off shape for the input signal. An interpolator portion, connected to the roll-off filter portion, executes an interpolation process with a multiple of two. This process is a filtering process for forming a frequency spectrum characteristic in a cosine roll-off shape for an input signal. Depending on what multiple of the original sampling frequency a transmission point signal is interpolated, a corresponding number of the interpolator portions are connected in a cascade shape. when a plurality of channels of transmission point signals are modulated and multiplexed according to an FDM system, a corresponding number of signal processing systems are disposed according to the plurality of transmission point signals with different modulation rates.
摘要翻译：用于输入传输点信号的滚降滤波器部分同时执行滚降滤波处理和两个倍数的内插处理。滚降滤波处理适用于形成用于输入信号的余弦滚降形状的频谱特性。连接到滚降滤波器部分的内插器部分以两倍的倍数执行内插处理。该处理是用于形成用于输入信号的余弦滚降形状的频谱特性的滤波处理。根据传输点信号的原始采样频率的多少来内插，相应数量的内插器部分以级联形式连接。当根据FDM系统对多个传输点信号进行调制和复用时，根据具有不同调制速率的多个传输点信号设置相应数量的信号处理系统。

3. 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。

4. 发明授权

US07286600B2 Data transmission method and data transmission device 失效
标题翻译：数据传输方式和数据传输设备
公开(公告)号：US07286600B2
公开(公告)日：2007-10-23
申请号：US10620819
申请日：2003-07-16
申请人： Hiroyasu Murata , Takashi Kaku
发明人： Hiroyasu Murata , Takashi Kaku
IPC分类号： H04L27/00
CPC分类号： H04L27/2605 , H04L25/03343 , H04L27/2644 , H04L2025/03414
摘要： A power line carrier communication system can effectively reduce leak electromagnetic field generation. Transmission data is copied on a frequency axis, and vector multiplication of a finite-difference function is performed to insert either a zero signal or an inverted signal between original signals.
摘要翻译：电力线载波通信系统可有效减少电磁场泄漏产生。传输数据在频率轴上复制，并执行有限差分函数的矢量相乘以在原始信号之间插入零信号或反相信号。

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

US5448595A Automatic gain control circuit for a demodulation section of a modem 失效
标题翻译：用于调制解调器解调部分的自动增益控制电路
公开(公告)号：US5448595A
公开(公告)日：1995-09-05
申请号：US109044
申请日：1993-08-19
申请人： Takashi Kaku , Hiroyasu Murata , Tohru Ogawa
发明人： Takashi Kaku , Hiroyasu Murata , Tohru Ogawa
IPC分类号： H04L29/10 , H03G3/20 , H04L27/22 , H04L27/38 , H04L27/08
CPC分类号： H03G3/3052 , H03G3/3042
摘要： An automatic gain control circuit which is provided in a demodulation section of a modem to adjust the loop gain so that the level of a band-limited receive signal may have a predetermined reference value and to output the receive signal to an automatic equalization section of the modem. The automatic gain control circuit is improved in that, even when a disturbance of the circuit such as a gain hit or a drop-out occurs, regular communication can be continued without requiring a data mode leading-in operation. The automatic gain control circuit includes a reference value setting unit for generating a reference value, an error calculation unit for determining an error signal between the receive signal and the reference value, a receive level variation correcting controlling force setting unit for setting a receive level variation correcting controlling force to be added to the error signal, an error signal correction unit for correcting the error signal, an error signal averaging unit for averaging the corrected error signal and a feedback unit for feeding back, as the receive signal, the averaged corrected error signal. The receive level variation correcting controlling force to be set by the receive level variation correcting controlling force setting unit is varied in response to the error signal.
摘要翻译：一种自动增益控制电路，其设置在调制解调器的解调部分中，以调整环路增益，使得带限接收信号的电平可以具有预定的参考值，并将接收信号输出到调制解调器。自动增益控制电路的改进在于，即使发生诸如增益命中或丢失之类的电路的干扰，可以继续进行常规通信，而不需要数据模式导入操作。自动增益控制电路包括用于产生参考值的参考值设置单元，用于确定接收信号和参考值之间的误差信号的误差计算单元，用于设置接收电平变化的接收电平变化校正控制力设置单元校正误差信号中的加权控制力，用于校正误差信号的误差信号校正单元，用于对校正误差信号进行平均的误差信号平均单元和用于反馈的反馈单元作为接收信号的平均校正误差信号。由接收电平变化校正控制力设定单元设定的接收电平变化校正控制力响应于误差信号而变化。

8. 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。

9. 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.

10. 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。

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