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61. 发明授权

US5189684A Line signal deterioration removing systems 失效
标题翻译：线信号去除系统
公开(公告)号：US5189684A
公开(公告)日：1993-02-23
申请号：US582207
申请日：1990-10-02
申请人： Takashi Kaku , Hiroki Kishimoto , Kyoko Hirao
发明人： Takashi Kaku , Hiroki Kishimoto , Kyoko Hirao
IPC分类号： H04L1/20 , H04L27/00 , H04L27/233
CPC分类号： H04L27/2332 , H04L1/205 , H04L2027/003 , H04L2027/0057
摘要： A system for removing line deterioration elements such as intersymbol interference, carrier frequency offset and phase jitter, etc. from the receiving signal. An automatic equalizing unit compensates for signal deterioration by intersymbol interference. Next, a carrier phase control unit compensates for signal deterioration by carrier frequency offset. Thereafter, a phase jitter interference removing units allows increase of only phase jitter element by utilizing line characteristic to easily extract phase jitter element. Since the signal including phase jitter is a low frequency signal, a phase jitter removing unit further removes phase jitter by shifting the frequency range to a higher frequency range on the frequency axis and then shifting it to the bandwidth for each processing.
摘要翻译： PCT No.PCT / JP90 / 00735 Sec。 371 1990年10月2日第 102（e）1990年10月2日日期PCT提交1990年6月6日PCT公布。 WO90 / 16117 PCT出版物日期：1990年12月27日。一种用于从接收信号中去除线路恶化元件的码间干扰，载波频率偏移和相位抖动等的系统。自动均衡单元通过符号间干扰来补偿信号恶化。接下来，载波相位控制单元通过载波频率补偿来补偿信号劣化。此后，相位抖动干扰去除单元允许通过利用线路特性来增加仅相位抖动元件以容易地提取相位抖动元件。由于包括相位抖动的信号是低频信号，相位抖动去除单元还通过将频率范围移动到频率轴上的较高频率范围，然后将其移动到每个处理的带宽来消除相位抖动。

62. 发明授权

US5175745A Transversal type automatic equalizer with tap coefficient protection 失效
标题翻译：具有贴片保护功能的横向型自动均衡器
公开(公告)号：US5175745A
公开(公告)日：1992-12-29
申请号：US585622
申请日：1990-09-20
申请人： Takashi Kaku , Hiroki Kishimoto
发明人： Takashi Kaku , Hiroki Kishimoto
IPC分类号： H03H15/00 , H03H21/00 , H04B3/06 , H04L25/03
CPC分类号： H04L25/03044
摘要： A system of the transversal type automatic equalizer with a tap coefficient protection in which an inter-symbol interference is prevented. The system includes a summing unit for summing all of the tap powers detected by tap power detecting unit, and a determination unit for comparing the sum produced by the summing unit with a predetermined threshold value, and for producing the output determination of normal when the sum is not more than the threshold value and producing the output determination of abnormal tap coefficient growth when the sum is more than the threshold value.

63. 发明授权

US4672630A Training method of data receiving equipment 失效
标题翻译：数据接收设备的培训方法
公开(公告)号：US4672630A
公开(公告)日：1987-06-09
申请号：US842355
申请日：1986-03-18
申请人： Takashi Kaku
发明人： Takashi Kaku
IPC分类号： H04B3/10 , H04L7/10 , H04L25/03 , H04B3/04
CPC分类号： H04L7/10 , H04L25/03133 , H04L2025/03783
摘要： Data receiving equipment is trained by training signal of optimum length through the steps that the sending equipment sends data signal after sending the training signal having a length corresponding to the characteristics of a line connected thereto and containing information indicating the length and the receiving equipment trains itself with the received training signal and detects, using the information indicating the length, the timing when the training signal changes to a data signal.
摘要翻译： PCT No.PCT / JP83 / 00191 Sec。 371日期1984年2月17日 102（e）日期1984年2月17日PCT提交1983年6月15日PCT公布。出版物WO84 / 日期：1984年1月5日。数据接收设备通过发送设备发送数据信号的步骤训练最佳长度的训练信号，该训练信号的长度对应于与其连接的线路的特性，并包含指示并且接收设备用接收到的训练信号训练自己，并且使用指示长度的信息来检测训练信号改变为数据信号的定时。

64. 发明授权

US4482973A Digital automatic gain control circuit 失效
标题翻译：数字自动增益控制电路
公开(公告)号：US4482973A
公开(公告)日：1984-11-13
申请号：US393120
申请日：1982-06-28
申请人： Shigeyuki Unagami , Kuninosuke Ihira , Takashi Kaku
发明人： Shigeyuki Unagami , Kuninosuke Ihira , Takashi Kaku
IPC分类号： H03G3/20 , H03G3/30
CPC分类号： H03G3/3089
摘要： A digital automatic gain control circuit provided with a first AGC loop and a second AGC loop; activated alternately. The first AGC loop is activated when an input signal is initially supplied. The loop produces a certain digital value calculated as an inverse number of the digital level of the input through predetermined digital arithmetic operations utilizing an approximation polynominal. The calculated digital value is then preset in certain portions of the second AGC loop. The second AGC loop starts operating by using said present value, then uses the digital level of the input itself, instead of the preset value, and produces an automatic gain controlled digital output. Utilizing said preset value as an initial input to the second AGC loop allows for rapid stabilization of the automatic gain controlled digital output.
摘要翻译：一种具有第一AGC环路和第二AGC环路的数字自动增益控制电路; 交替激活。当最初提供输入信号时，第一个AGC环路被激活。该循环通过利用近似多项式的预定数字运算产生通过输入的数字电平的倒数计算出的某个数字值。然后将计算出的数字值预设在第二AGC环路的某些部分。第二AGC循环通过使用所述当前值开始运行，然后使用输入本身的数字电平而不是预设值，并产生自动增益控制的数字输出。利用所述预设值作为第二AGC环路的初始输入允许自动增益受控数字输出的快速稳定。

65. 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。

66. 发明授权

US07286494B2 Polling communication system and polling control method 失效
标题翻译：轮询通信系统和轮询控制方法
公开(公告)号：US07286494B2
公开(公告)日：2007-10-23
申请号：US10198607
申请日：2002-07-18
申请人： Takashi Kaku , Kyoko Hirao
发明人： Takashi Kaku , Kyoko Hirao
IPC分类号： H04B1/44 , H04J3/16 , H04L12/403 , H04L12/43 , G06F3/00
CPC分类号： H04L12/403 , H04B3/542 , H04B2203/5408 , H04B2203/5425 , H04B2203/5445
摘要： A polling communication system includes a main station and a plurality of sub stations connected to the main station. The main station includes an address control part and a polling control part. The address control part divides a predetermined polling cycle into a plurality of kinds of polling intervals each having a different number of times of polling, and holds addresses of polling target sub stations corresponding to the respective polling intervals. The polling control part switches the polling intervals and changes the addresses in the address control part according to states of the sub stations. Each of the sub stations includes another polling control part that sends a response when the sub station is polled by the main station.
摘要翻译：轮询通信系统包括主站和连接到主站的多个子站。主站包括地址控制部分和轮询控制部分。地址控制部分将预定轮询周期划分成具有不同轮询次数的多种轮询间隔，并且保持对应于相应轮询间隔的轮询目标子站的地址。轮询控制部分切换轮询间隔，并根据子站的状态改变地址控制部分中的地址。每个子站包括另一个轮询控制部分，当主站被主站轮询时发送响应。

67. 发明授权

US07173959B2 Noise elimination method and apparatus 失效
标题翻译：消噪方法及装置
公开(公告)号：US07173959B2
公开(公告)日：2007-02-06
申请号：US10331078
申请日：2002-12-27
申请人： Takashi Kaku
发明人： Takashi Kaku
IPC分类号： H04B1/00
CPC分类号： H04B1/7097 , H04B3/54 , H04B2203/5416 , H04B2203/5425 , H04B2203/5441 , H04B2203/5445 , H04B2203/5458 , H04B2203/5483 , H04B2203/5491
摘要： In a noise elimination method and apparatus, a spread spectrum modulation signal having a data signal and an overlapping noise component at a signal point on a time axis and a noise component at a zero point on the time axis is received. A correlation of the received modulation signal to a spread spectrum code is generated by using a correlating filter. Zero is set at points of the modulation signal other than the signal point where the correlation becomes the maximum, so that the noise component at the zero point is extracted from the modulation signal. The noise component at the signal point is predicted by performing interpolation prediction based on the extracted noise component. The noise component at the signal point is removed from the modulation signal based on the predicted noise component.
摘要翻译：在噪声消除方法和装置中，接收在时间轴上的信号点具有数据信号和重叠噪声分量的扩展频谱调制信号以及时间轴零点的噪声分量。通过使用相关滤波器来生成接收的调制信号与扩频码的相关性。在除相关变为最大的信号点之外的调制信号的点处设置零，从而从调制信号中提取零点的噪声分量。通过基于提取的噪声分量执行内插预测来预测信号点处的噪声分量。基于预测的噪声分量，将信号点的噪声分量从调制信号中去除。

68. 发明授权

US07113557B2 Noise canceling method and apparatus 失效
公开(公告)号：US07113557B2
公开(公告)日：2006-09-26
申请号：US10047132
申请日：2002-01-15
申请人： Takashi Kaku , Ryoji Okita
发明人： Takashi Kaku , Ryoji Okita
IPC分类号： H03D1/04 , H03K5/01 , H04B1/10 , H04L25/08
CPC分类号： H04L27/2647 , H04B1/1036 , H04B1/12 , H04B1/123 , H04B2203/5425
摘要： A canceling method and apparatus can achieve a fast communication by improving an S/N value by adaptively canceling a noise with respect to a frequency or band having a large noise by selecting noise canceling band in accordance with a condition of noise being generated. A reception signal contains a specific signal having a specified time position, amplitude and phase. A noise distribution of the specific signal is recognized so as to predict a noise by extracting a frequency band having a larger noise component from a pair of frequencies generated by the insertion of the specific signal. An original transmission signal is reproduced by canceling the predicted noise from the reception signal.

69. 发明申请

US20060208849A1 Signal level switching circuit 审中-公开
标题翻译：信号电平切换电路
公开(公告)号：US20060208849A1
公开(公告)日：2006-09-21
申请号：US10548633
申请日：2004-03-11
申请人： Toshiro Tojo , Takashi Kaku , Tooru Ogawa
发明人： Toshiro Tojo , Takashi Kaku , Tooru Ogawa
IPC分类号： H01C10/36
CPC分类号： H04L25/0292 , H04L25/0278
摘要： A signal level switching circuit is provided with input resistors 2a and 2b connected between input terminals 1a and 1b of a signal and output terminals 5a and 5b used to be connected to a reception circuit 6; a switch circuit 3 which has been constituted by a plurality of switching elements and has been connected to the output terminals 5a and 5b; and a voltage dividing resistor 4 for selectively switching/connecting with respect to the input resistors 2a and 2b by this switch circuit 3.
摘要翻译：信号电平切换电路设置有连接在用于连接到接收电路6的信号和输出端子5a和5b之间的输入端子1a和1b之间的输入电阻器2a和2b; 开关电路3由多个开关元件构成，并连接到输出端子5a和5b; 以及用于通过该开关电路3选择性地切换/连接到输入电阻器2a和2b的分压电阻器4。

70. 发明授权

US07019611B2 Modem coupling circuit for power-line carrier 失效
标题翻译：用于电力线载波的调制解调器耦合电路
公开(公告)号：US07019611B2
公开(公告)日：2006-03-28
申请号：US10803083
申请日：2004-03-18
申请人： Takashi Kaku , Fumishiro Tsuda , Toshiro Tojo , Toyomi Obikawa , Toshiya Sato , Hideaki Yamauchi , Masahiko Kunii
发明人： Takashi Kaku , Fumishiro Tsuda , Toshiro Tojo , Toyomi Obikawa , Toshiya Sato , Hideaki Yamauchi , Masahiko Kunii
IPC分类号： H01F17/06
CPC分类号： H04B3/56 , H01F19/08 , H01F2019/085 , H01F2038/143 , H04B2203/5425 , H04B2203/547 , H04B2203/5483
摘要： A modem coupling circuit comprising: (a) a transformer 1 having a core 1a including a gap formed therein, primary windings N1a, N1b constituting a bifilar wound coil which is wound around the core 1a, forming a single layer and connected to power lines L1, L2, and a secondary winding N2 connected to a transmitting circuit 2 and a secondary winding N3 connected to a receiving circuit 3, the secondary windings N2, N3 holding the single layer of the primary windings between; (b) a coupling capacitor C1 connected to a middle point between first ends of the primary windings, the first ends being not connected to the power lines L1, L2; (c) current limiting resistances R1a, R1b connected to the primary windings N1a, N1b having a bifilar construction; (d) drive resistances R2a, R2b connected to the secondary winding for transmission N2; and (e) terminating resistances R3a, R3b connected to the secondary winding for reception N3.
摘要翻译：一种调制解调器耦合电路，包括：（a）具有芯1a的变压器1，其中形成有间隙，初级绕组N 1 a，N 1 b构成缠绕在芯1a上的双绕线圈，形成单层连接到与发送电路2连接的电力线L 1，L 2和次级绕组N 2，以及连接到接收电路3的次级绕组N 3，保持单层的次级绕组N 2，N 3 初级绕组之间; （b）连接到初级绕组的第一端之间的中点的耦合电容器C 1，第一端不连接到电力线L 1，L 2; （c）连接到具有双相结构的初级绕组N 1 a，N 1 b的限流电阻R 1 a，R b; （d）连接到用于传输的次级绕组N 2的驱动电阻R 2 a，R 2 b; 和（e）连接到用于接收的次级绕组N 3的端接电阻R 3 a，R 3 b。

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