公开(公告)号：US07885364B2

公开(公告)日：2011-02-08

申请号：US11336910

申请日：2006-01-23

申请人： Takumi Ito

发明人： Takumi Ito

IPC分类号： H04B7/10

CPC分类号： H04L25/03318 ,  H04B7/0854 ,  H04B7/0868 ,  H04L1/06 ,  H04L25/0204 ,  H04L25/0246 ,  H04L25/03216

摘要： In a wireless communication system having a receiver which receives, through plural reception antennae, signals transmitted from plural transmission antennae, bit likelihood can be surely calculated without requiring a selection processing. A transmitter has M transmission antennae, and transmits signals through the transmission antennae, respectively. A receiver has N reception antennae, and receives signals. K nulling devices perform nulling with use of signals received, and output part of nulling signals. K demodulation devices are inputted with nulling signals, demodulate signals, and output demodulated signals. A parallel-serial conversion device is inputted with demodulated signals, converts the parallel format thereof into a serial format, and outputs the result as demodulated data.

摘要翻译： 在具有通过多个接收天线接收从多个发送天线发送的信号的接收机的无线通信系统中，可以可靠地计算位似然性，而不需要选择处理。 发射机具有M个发射天线，分别通过发射天线发射信号。 接收机具有N个接收天线，并接收信号。 K置零器件使用接收到的信号进行归零，并输出部分零位信号。 K个解调装置输入零信号，解调信号和输出解调信号。 并行串行转换装置输入解调信号，将其并行格式转换为串行格式，并输出结果作为解调数据。

公开(公告)号：US07580447B2

公开(公告)日：2009-08-25

申请号：US10547505

申请日：2004-05-20

申请人： Takumi Ito

发明人： Takumi Ito

IPC分类号： H04B1/00 ,  H04B1/10 ,  H04B17/02

CPC分类号： H04B7/06 ,  H04B1/7117 ,  H04B7/082

摘要： A reception device 81) has reception antennas (11-1 to 11-n) for receiving signals transmitted from a plurality of transmission antennas and outputting reception signals. A channel estimation device (12) estimates a channel between the antennas and outputs a channel estimation value H. A path selection device (13) inputs the channel estimation value H and calculates the channel correlation value between the transmission/reception antennas from the channel estimation value H. If the calculation result is smaller than a reference value, the path selection device (13) outputs a path selection signal selecting a path of a high power with a higher priority. On the other hand, if the calculation result is greater than the reference value, the path selection device (13) outputs a path selection signal selecting, with a higher priority, a path having a lower correlation value with a path detected by the other reception antenna. Despread devices (14-1 to 14-kn) input the reception signal and the path selection signal and output a despread signal. A demodulation device (15) inputs a despread signal and outputs a reproduction series.

摘要翻译： 接收装置81）具有用于接收从多个发送天线发送的信号并输出​​接收信号的接收天线（11-1〜11-n）。 信道估计装置（12）估计天线之间的信道并输出信道估计值H.路径选择装置（13）输入信道估计值H，并从信道估计中计算发送/接收天线之间的信道相关值 如果计算结果小于参考值，路径选择装置（13）输出选择具有较高优先级的高功率路径的路径选择信号。 另一方面，如果计算结果大于参考值，则路径选择装置（13）输出路径选择信号，其选择具有较低相关值的路径与由另一个接收检测到的路径 天线。 解扩器（14-1至14-kn）输入接收信号和路径选择信号，并输出解扩信号。 解调装置（15）输入解扩信号并输出​​再现序列。

公开(公告)号：US07565114B2

公开(公告)日：2009-07-21

申请号：US10564552

申请日：2004-07-16

申请人： Takumi Ito ,  Shousei Yoshida

发明人： Takumi Ito ,  Shousei Yoshida

IPC分类号： H04B1/00 ,  H04B7/00

CPC分类号： H04B7/0619 ,  H04L1/0001

摘要： An SINR estimating unit of a receiver apparatus measures first and second demodulated signals to calculate SINR (ratio of signal power to sum of interference power and noise power) for each signal sequence. A transmission parameter deciding unit decides, based on the SINR, a transmission parameter used by a transmitter apparatus for controlling the transmission for each signal sequence, and then feeds the decided transmission parameter back to the transmitter apparatus. First and second mapping units of the transmitter apparatus controls, based on the transmission parameters as fed back, the modulation level for each signal sequence.

摘要翻译： 接收机装置的SINR估计单元测量第一和第二解调信号，以计算每个信号序列的SINR（信号功率与干扰功率与噪声功率之和的比值）。 传输参数决定单元基于SINR确定由发送装置使用的用于控制每个信号序列的发送的发送参数，然后将所确定的发送参数反馈给发送装置。 发射机装置的第一和第二映射单元基于反馈的传输参数来控制每个信号序列的调制级别。

公开(公告)号：US20080298498A1

公开(公告)日：2008-12-04

申请号：US12127258

申请日：2008-05-27

申请人： TAKUMI ITO

发明人： TAKUMI ITO

IPC分类号： H04L27/00 ,  H04L27/06

CPC分类号： H04L1/0006 ,  H04L1/0002 ,  H04L1/0045 ,  H04L25/0224

摘要： A communication method for transmitting and receiving a coded signal is provided. In a transmitting end, the method holds (determines) control information for specifying an insertion position and an insertion amount to insert a redundant signal known to the receiving apparatus into an information data sequence, generates a coded signal sequence by encoding an information data sequence, generates a transmission signal by inserting the redundant signal into the coded signal sequence based on the held control information, and transmits the generated transmission signal. In a receiving end, the method receives the transmission signal as a received signal, holds likelihood information for a redundant signal contained in the received signal, calculates a likelihood from the received signal, substitutes the likelihood information for a likelihood corresponding to the redundant signal included in the calculated likelihood and demodulates the signal.

摘要翻译： 提供了一种用于发送和接收编码信号的通信方法。 在发送端，该方法保持（确定）用于指定插入位置和插入量的控制信息，以将接收装置已知的冗余信号插入到信息数据序列中，通过对信息数据序列进行编码来生成编码信号序列， 通过基于所保持的控制信息将冗余信号插入编码信号序列来生成发送信号，并发送所生成的发送信号。 在接收端，该方法接收发送信号作为接收信号，保存包含在接收信号中的冗余信号的似然信息，根据接收信号计算似然率，将似然信息代入对应于包括的冗余信号的似然度 在计算出的似然性并解调信号。

公开(公告)号：US07386057B2

公开(公告)日：2008-06-10

申请号：US10371667

申请日：2003-02-20

申请人： Takumi Ito ,  Xiaodong Wang

发明人： Takumi Ito ,  Xiaodong Wang

IPC分类号： H04B7/02 ,  H04L1/02

CPC分类号： H04L1/005 ,  H04L1/0066

摘要： Canceling interference in a multi-input multi-output (MIMO) system is accomplished with a plurality of interference cancellers. Each interference canceller outputs an interference-cancelled received version of its corresponding transmitted signal. An estimate of the transmitted signals from all transmitting antennae is used in each interference canceller. Each estimate is multiplied by a channel coefficient matrix, which can be derived from the communication of known pilot symbols, and the resulting products of each estimate and the channel coefficient matrix are subtracted from the received signals, resulting in a corresponding difference. Each corresponding difference may be multiplied by a filter weight vector. The received signal is decoded based upon the resulting products If a predetermined interrupt criteria is not met, then the decoded signal is used in the preparation of the estimate for a subsequent interference cancellation iteration. The method can be iteratively performed until the predetermined interrupt criteria is met.

摘要翻译： 在多输入多输出（MIMO）系统中取消干扰是用多个干扰消除器实现的。 每个干扰消除器输出其对应的发送信号的干扰消除接收版本。 在每个干扰消除器中使用来自所有发射天线的传输信号的估计。 每个估计乘以可以从已知导频符号的通信导出的信道系数矩阵，并且从接收到的信号中减去每个估计和信道系数矩阵的结果乘积，从而产生相应的差异。 每个相应的差值可以乘以滤波器权重向量。 接收到的信号根据所得到的乘积进行解码。如果不满足预定的中断标准，则在编制用于随后的干扰消除迭代的估计中使用解码信号。 可以迭代地执行该方法，直到满足预定的中断标准。

公开(公告)号：US20090002235A1

公开(公告)日：2009-01-01

申请号：US11816876

申请日：2006-02-16

申请人： Takumi Ito

发明人： Takumi Ito

IPC分类号： H01Q3/00

CPC分类号： H04B7/0615 ,  H01Q3/26 ,  H04B7/0617 ,  H04W16/28

摘要： Although the beam forming is quite a good scheme, if there exist particularly a plurality of users, the characteristic deterioration occurs in an associated communication line due to the tight radio resource on the reverse line and delay in the transmission time caused by the feedback of information exceeding the required information. The transmitter 1 in a radio communication system receives signals by the antennas 13-1 to 13-M and the duplexers 14-1 to 14-M, extracts user's profile information by the transmission signal controller 12, determines in a unified manner a radio resource amount and its assignment as well as the application or non-application of the beam forming, generates by the transmission signal generator 11 transmission signals using user's transmission data according to the resource distribution and the application or non-application of the beam forming thus determined, and transmits the signals by use of the duplexers 14-1 to 14-M and the antennas 13-1 to 13-M.

摘要翻译： 虽然波束形成是相当好的方案，但是如果存在特别多的用户，则由于反向线路上的无线资源紧张以及由信息的反馈引起的传输时间的延迟，在相关的通信线路中发生特性劣化 超过所需信息。 无线电通信系统中的发射机1由天线13-1至13-M和双工器14-1至14-M接收信号，由发送信号控制器12提取用户的简档信息，以统一的方式确定无线电资源 数量及其分配以及波束形成的应用或不应用由传输信号发生器11根据资源分布和如此确定的波束形成的应用或不应用使用用户传输数据生成传输信号， 并通过使用双工器14-1至14-M和天线13-1至13-M发送信号。

公开(公告)号：US20080001569A1

公开(公告)日：2008-01-03

申请号：US11812531

申请日：2007-06-19

申请人： Takumi Ito

发明人： Takumi Ito

IPC分类号： G05B1/06

CPC分类号： H02P7/29

摘要： A motor driving apparatus includes a control circuit configured to control an electric current flowing in a coil for driving a motor for driving a galvanometer mirror. The control circuit includes a PWM signal generating circuit configured to generate a PWM signal having a fundamental frequency equal to or greater than 50 kHz and equal to or less than 1 MHz and an output transistor element configured to perform switching driving of the electric current output based on the PWM signal; and a pulse width of the PWM signal is controlled by a control signal being input to the PWM signal generating circuit.

摘要翻译： 电动机驱动装置包括：控制电路，其被配置为控制用于驱动用于驱动检流计镜的电动机的线圈中流动的电流。 控制电路包括：PWM信号生成电路，其被配置为生成基频为50kHz以上且1MHz以下的PWM信号;以及输出晶体管元件，其被配置为进行基于电流输出的切换驱动 对PWM信号; 并且通过输入到PWM信号发生电路的控制信号来控制PWM信号的脉冲宽度。

公开(公告)号：US20060185594A1

公开(公告)日：2006-08-24

申请号：US10565004

申请日：2004-07-22

申请人： Tsuyoshi Uehara ,  Takayuki Ono ,  Hitoshi Sezukuri ,  Hiroto Takeuchi ,  Hiromi Komiya ,  Takumi Ito ,  Takae Ohta

发明人： Tsuyoshi Uehara ,  Takayuki Ono ,  Hitoshi Sezukuri ,  Hiroto Takeuchi ,  Hiromi Komiya ,  Takumi Ito ,  Takae Ohta

IPC分类号： C23C16/00

CPC分类号： H01J37/32009 ,  H01J37/32541

摘要： [PROBLEM TO BE SOLVED]To reduce the bending amount caused by Coulomb force of electrodes and obtain uniformity of surface processing in a plasma processing apparatus for a workpiece having a large area. [SOLUTION MEANS]An electrode structure 30X of a plasma processing apparatus comprises a pair of electrode rows 31X, 32X extending leftward and rightward and opposite to each other in back and forth directions. Each electrode row includes a plurality of electrode members 31A through 32C bilaterally arranged in a side-by-side relation. The electrode members of the two electrode rows, which are bilaterally arranged in substantially same positions, have opposite polarities and form row-to-row partial gaps 33p therebetween. The electrode members arranged adjacent to each other are opposite in polarity with respect to each other.

摘要翻译： [待解决的问题]为了减小由电极的库仑力引起的弯曲量，并且在具有大面积的工件的等离子体处理装置中获得表面处理的均匀性。 [等离子体处理装置]电极结构30X包括一对在前后方向上向左和向右延伸并彼此相对延伸的电极列31 X，32 X。 每个电极行包括并列侧并排布置的多个电极构件31A至32C。 两个电极列的电极构件，其两侧布置在大致相同的位置，具有相反的极性，并在它们之间形成一行到一列的部分间隙33p。 彼此相邻布置的电极构件的极性相对于彼此相反。

公开(公告)号：US07047942B2

公开(公告)日：2006-05-23

申请号：US10806328

申请日：2004-03-23

申请人： Hatsuo Ando ,  Tatsuya Iwazaki ,  Kanji Namimatsu ,  Takumi Ito ,  Yasuyuki Onodera

发明人： Hatsuo Ando ,  Tatsuya Iwazaki ,  Kanji Namimatsu ,  Takumi Ito ,  Yasuyuki Onodera

IPC分类号： F02M55/00

CPC分类号： F02M55/02 ,  F02M55/025 ,  F02M59/04 ,  F02M63/0225

摘要： Cylinder heads (100a to 100f are respectively provided with fuel injectors (101a to 101f). Each of the fuel injectors (101a to 101f) is connected to each of joints (105a to 105f) in a common rail (105) extending linearly through fuel injection pipes (103a to 103f). In this example, it can be achieved to allow all the fuel injection pipes (103a to 103f) to have the same length by crossing the injection pipes (103b, 103c, 103d and 103e) to connect. With this configuration, it is possible to reduce the irregularities in the amount of fuel injection and to enhance the engine performance.

摘要翻译： 气缸盖（100a〜100f）分别设有燃料喷射器（101a〜101f），每个燃料喷射器（101a〜101f）以共同的方式与各接头（105a〜105f）连接 轨道（105）通过燃料喷射管（103a至103f）线性延伸，在该示例中，可以实现所有燃料喷射管（103a至103f）通过穿过喷射管 （103b，103c，103d和103e）连接，通过该结构，能够减少燃料喷射量的不均匀性，提高发动机性能。

公开(公告)号：US07032382B2

公开(公告)日：2006-04-25

申请号：US10847821

申请日：2004-05-17

申请人： Yasuyuki Onodera ,  Toshihiko Nishiyama ,  Takumi Ito

发明人： Yasuyuki Onodera ,  Toshihiko Nishiyama ,  Takumi Ito

IPC分类号： F02B33/44 ,  F02B37/16 ,  F02B37/00 ,  F02B37/12

CPC分类号： F02B37/16 ,  F02B3/06 ,  F02B29/0425 ,  F02B37/10 ,  F02D23/02 ,  F02D41/0007 ,  F02M26/05 ,  F02M26/10 ,  F02M26/19 ,  F02M26/23 ,  Y02T10/144

摘要： A bypass conduit (23) connects an outlet passage of a compressor (21) of an exhaust gas turbocharger (20) and an inlet passage of an exhaust turbine (22), and a bypass valve (24) is provided therein. When the operating condition of a diesel engine (1) is found to be in a low-speed and high-load region, the bypass valve (24) is controlled by means of a valve controller to adjust the bypass conduit (23) so as to open it. Then, the charge air partly flows into an exhaust conduit (4) to increase the rotational speed of the exhaust turbine (22) and hence the charge air flow rate raises the output of the diesel engine (1). Additionally, as the charge air flow rate is increased, the operating condition of a compressor (21) is prevented from approaching the surging range.

摘要翻译： 旁通管道（23）连接排气涡轮增压器（20）的压缩机（21）的出口通道和排气涡轮机（22）的入口通道，并且在其中设置旁通阀（24）。 当发现柴油发动机（1）的运转状态处于低速高负荷区域时，通过阀门控制器控制旁通阀（24），以调节旁路管道（23），以便 打开它。 然后，增压空气部分地流入排气管道（4）以增加排气涡轮机（22）的转速，因此增压空气流量提高柴油发动机（1）的输出。 此外，随着增压空气流量的增加，压缩机（21）的运转状态被防止接近浪涌范围。