公开(公告)号：US08970445B2

公开(公告)日：2015-03-03

申请号：US13398098

申请日：2012-02-16

Applicant: Toshiya Mitomo ,  Yukako Tsutsumi ,  Hideo Kasami

Inventor： Toshiya Mitomo ,  Yukako Tsutsumi ,  Hideo Kasami

IPC: H01Q1/50 ,  H03H7/38 ,  H04B1/46 ,  H01Q3/00 ,  H01Q7/00 ,  H01Q9/16

CPC classification number: H01Q1/50 ,  H01Q3/00 ,  H01Q7/00 ,  H01Q9/16

Abstract: There is provided a radio device including an antenna, a first impedance converting circuit, a second impedance converting circuit and a differential output unit. The antenna has a first terminal and a second terminal to receive a signal. The first impedance converting circuit and the second impedance converting circuit have a first impedance and a second impedance, respectively. The first impedance and the second impedance each are controllable. One end of the first impedance converting circuit and one end of the second impedance converting circuit are connected to the first terminal and the second terminal of the antenna, respectively. The differential output unit is connected to the other end of the first impedance converting circuit and the other end of the second impedance converting circuit through which the signal received by the antenna is input to the differential output unit, and transform the signal into a differential signal.

Abstract translation: 提供了一种无线电设备，包括天线，第一阻抗转换电路，第二阻抗转换电路和差分输出单元。 天线具有接收信号的第一端子和第二端子。 第一阻抗转换电路和第二阻抗转换电路分别具有第一阻抗和第二阻抗。 第一阻抗和第二阻抗各自是可控的。 第一阻抗转换电路的一端和第二阻抗转换电路的一端分别连接到天线的第一端子和第二端子。 差分输出单元连接到第一阻抗转换电路的另一端和第二阻抗转换电路的另一端，由天线接收的信号通过该另一端输入到差分输出单元，并将该信号变换成差分信号 。

公开(公告)号：US08502540B2

公开(公告)日：2013-08-06

申请号：US12614943

申请日：2009-11-09

Applicant: Toshiyuki Nakanishi ,  Koji Akita ,  Hideo Kasami ,  Takahiro Sekiguchi

Inventor： Toshiyuki Nakanishi ,  Koji Akita ,  Hideo Kasami ,  Takahiro Sekiguchi

IPC: G01R33/36 ,  G01R33/3607

CPC classification number: G01R33/3692 ,  G01R33/3607 ,  G01R33/3621

Abstract: A magnetic resonance imaging apparatus includes a probe unit and a control/imaging unit. The probe unit includes a converter converting a sampled magnetic-resonance signal into a digital signal, a first transmitter converting the digital signal into a first-radio signal, a first receiver receiving and performing detection on the second-radio signal to obtain a first-received signal, and a clock-regeneration unit regenerating a clock component from the first-received signal to generate a regenerated-clock signals. The control/imaging unit includes a second-receiver receiving the first-radio signal to obtain a second-received signal, a data processor performing data processing on the second-received signal in synchronism with a reference-clock signal to obtain a video signal, and a second transmitter which modulates a carrier wave using the reference-clock signal, converts the reference-clock signal into the second-radio signal, and transmits the second-radio signal through the second-wireless channel.

Abstract translation: 磁共振成像装置包括探针单元和控制/成像单元。 探头单元包括将采样的磁共振信号转换为数字信号的转换器，将数字信号转换为第一无线电信号的第一发射机，第一接收机接收并对第二无线电信号执行检测， 以及时钟再生单元，从第一接收信号再生时钟分量，以产生再生时钟信号。 控制/成像单元包括接收第一无线电信号以获得第二接收信号的第二接收机，数据处理器与参考时钟信号同步地对第二接收信号执行数据处理以获得视频信号， 以及使用基准时钟信号对载波进行调制的第二发送器，将基准时钟信号转换为第二无线信号，并通过第二无线信道发送第二无线信号。

公开(公告)号：US07627047B2

公开(公告)日：2009-12-01

申请号：US11288112

申请日：2005-11-29

Applicant: Makoto Tsuruta ,  Hidehiro Matsuoka ,  Hideo Kasami

Inventor： Makoto Tsuruta ,  Hidehiro Matsuoka ,  Hideo Kasami

IPC: H04K1/10

CPC classification number: H04B7/0874 ,  H04B7/084 ,  H04B7/0857 ,  H04L27/2657 ,  H04L27/2675

Abstract: An OFDM receiver apparatus mounted on a movable object for receiving an OFDM signal, includes a plurality of directional antennas which receive an OFDM signal, an estimator to estimate a center frequency of a spectrum of a Doppler component from one of the received signals or a multiplexed signal obtained by multiplexing the received signals, a shift quantity calculator to calculate a shift quantity from the estimated center frequency of the estimator and directivity information representing directivity directions of the directional antennas, a plurality of frequency shifters to subject the received signals to frequency shift according to the shift quantity to compensate for Doppler shift, a combining unit to diversity-combine frequency shifted signals of the frequency shifters, and a demodulator/decoder to demodulate and decode combining diversity signals of the combining unit.

Abstract translation: 安装在用于接收OFDM信号的可移动物体上的OFDM接收机装置包括接收OFDM信号的多个定向天线，估计器，用于从接收信号之一估计多普勒分量的频谱的中心频率，或多路复用 通过多路复用接收信号获得的信号;移位量计算器，用于根据估计器的估计中心频率计算偏移量，以及指示方向性天线的方向性方向的方向性信息;多个频移器，用于使接收到的信号进行频移， 到用于补偿多普勒频移的移位量，用于对移频器的频移信号进行分集组合的组合单元，以及解调/解码器，对组合单元的组合分集信号进行解调和解码。

公开(公告)号：US07305213B2

公开(公告)日：2007-12-04

申请号：US10810811

申请日：2004-03-29

Applicant: Hideo Kasami ,  Hidehiro Matsuoka ,  Tsuguhide Aoki ,  Kazumi Sato

Inventor： Hideo Kasami ,  Hidehiro Matsuoka ,  Tsuguhide Aoki ,  Kazumi Sato

IPC: H04B1/00

CPC classification number: H04B1/707

Abstract: A receiver comprising: an antenna which receives a radio signal including N possible symbols {c1(n), c2(n), . . . cM−1(n), cM(n)}, an N correlation units which are provided corresponding to the N possible symbols, respectively, each correlation unit detecting the degree of correlation with the radio signal received by the antenna, and a symbol determination unit which determines the symbol included in the radio signal received by the antenna based on the degree of correlation detected by the N correlation units. The N correlation units detect the degree of correlation between the radio signal received by the antenna and the N possible symbols represented by M chips {α0c1(n), α0c2(n)+α1c1(n), . . . , α0cM−1(n)+α1cM−2(n), α0cM(n)+α1cM−1(n)}.

Abstract translation: 一种接收机，包括：接收包括N个可能符号的无线电信号的天线，其中，n个可能的符号（n），。 。 。 （n），c（M），（N），N，N，N， 分别对应于N个可能的符号，每个相关单元检测与由天线接收的无线电信号的相关程度;以及符号确定单元，其基于相关程度确定由天线接收的无线电信号中包括的符号 由N个相关单元检测。 N个相关单元检测由天线接收的无线电信号与由M个码元（n）表示的N个可能符号之间的相关程度 ），α<0> 2 （n）+α1 C 1 / SUB> ^{（n），。 。 。 （n）M-1 M-2（M + 1） - - - - （1） （n）（n）（n） （n）M-1 （n）}。}

公开(公告)号：US07272372B2

公开(公告)日：2007-09-18

申请号：US10968965

申请日：2004-10-21

Applicant: Hideo Kasami ,  Kazumi Sato

Inventor： Hideo Kasami ,  Kazumi Sato

IPC: H04B1/06

CPC classification number: H04B7/0814 ,  H04B7/0808

Abstract: A diversity antenna apparatus has N (N is 3 or more integer) elements of antennas which receive radio signals, a priority storage unit configured to store priority data of the N elements of antennas, a first antenna selector which selects two antennas from among the N elements of antennas based on the priority data, a second antenna selector which selects one of the selected two antennas based on a prescribed condition, and a priority update unit configured to update priority data of the N elements of antennas stored in the priority storage unit based on the antenna selected by the second antenna selector.

Abstract translation: 分集天线装置具有接收无线电信号的N（N是3个以上的整数）个天线元素，优先存储单元，被配置为存储N个天线元素的优先级数据;第一天线选择器，从N中选择两个天线 基于优先级数据的天线元素，基于规定条件选择所选择的两个天线中的一个天线的第二天线选择器，以及优先级更新单元，其被配置为基于优先级存储单元中存储的天线的N个元素的优先级数据 在由第二天线选择器选择的天线上。

公开(公告)号：US20070189150A1

公开(公告)日：2007-08-16

申请号：US11619385

申请日：2007-01-03

Applicant: Hideo Kasami

Inventor： Hideo Kasami

IPC: H04J11/00

CPC classification number: H04L27/2647

Abstract: A signal receiving apparatus includes an antenna receiving an OFDM signal including a OFDM symbol, a first conversion unit configured to frequency-convert an OFDM signal received by the antenna, and a second conversion unit configured to analog-to-digital-convert the OFDM signal frequency-converted, sets a first section to be modulated in an interval time of the OFDM symbol and a second section that is other than the first section in the interval time, frequency-converts, by the first conversion unit, the OFDM signal received by the antenna, analog-to-digital-converts, by the second conversion unit, the OFDM signal frequency-converted, supplies power to the first and the second conversion units in the first section, and stopping supplying power to a part of the first conversion unit and a part of the second conversion unit in a second section, and demodulates the OFDM symbol which is in the first section, frequency-converted and analog-to-digital-converted.

Abstract translation: 一种信号接收装置，包括接收包含OFDM符号的OFDM信号的天线，被配置为对由天线接收的OFDM信号进行频率转换的第一转换单元和被配置为对OFDM信号进行模数转换的第二转换单元 在OFDM符号的间隔时间内设置要调制的第一部分和在间隔时间中不同于第一部分的第二部分，由第一转换单元对由第一转换单元接收的OFDM信号进行频率转换 所述天线由所述第二转换单元进行模数转换，所述频率转换的OFDM信号向所述第一部分中的所述第一转换单元和所述第二转换单元供电，并停止向所述第一转换的一部分供电 单元和第二转换单元的一部分，并对第一部分中的OFDM符号进行频率转换和模数转换。

公开(公告)号：US20060115011A1

公开(公告)日：2006-06-01

申请号：US11288112

申请日：2005-11-29

Applicant: Makoto Tsuruta ,  Hidehiro Matsuoka ,  Hideo Kasami

Inventor： Makoto Tsuruta ,  Hidehiro Matsuoka ,  Hideo Kasami

IPC: H04K1/10

CPC classification number: H04B7/0874 ,  H04B7/084 ,  H04B7/0857 ,  H04L27/2657 ,  H04L27/2675

Abstract: An OFDM receiver apparatus mounted on a movable object for receiving an OFDM signal, includes a plurality of directional antennas which receive an OFDM signal, an estimator to estimate a center frequency of a spectrum of a Doppler component from one of the received signals or a multiplexed signal obtained by multiplexing the received signals, a shift quantity calculator to calculate a shift quantity from the estimated center frequency of the estimator and directivity information representing directivity directions of the directional antennas, a plurality of frequency shifters to subject the received signals to frequency shift according to the shift quantity to compensate for Doppler shift, a combining unit to diversity-combine frequency shifted signals of the frequency shifters, and a demodulator/decoder to demodulate and decode combining diversity signals of the combining unit.

公开(公告)号：US06983167B2

公开(公告)日：2006-01-03

申请号：US10212242

申请日：2002-08-06

Applicant: Tomoko Adachi ,  Kuniaki Ito ,  Hideo Kasami ,  Kiyoshi Toshimitsu

Inventor： Tomoko Adachi ,  Kuniaki Ito ,  Hideo Kasami ,  Kiyoshi Toshimitsu

IPC: H04Q7/20

CPC classification number: H01Q1/246 ,  H01Q3/2605 ,  H04B17/318 ,  H04W24/00 ,  H04W52/0216 ,  H04W52/146 ,  H04W52/42 ,  H04W88/02 ,  Y02D70/142 ,  Y02D70/22

Abstract: A station determines the presence/absence of directional beam control in an access point, on the basis of received power measured when data transmitted from the access point are received, and the type of the received data. In accordance with the result of this determination, the station controls transmitting power to transmit data to the access point.

公开(公告)号：US08831153B2

公开(公告)日：2014-09-09

申请号：US13724277

申请日：2012-12-21

Applicant: Hidenori Okuni ,  Junya Matsuno ,  Hideo Kasami ,  Tsuyoshi Kogawa

Inventor： Hidenori Okuni ,  Junya Matsuno ,  Hideo Kasami ,  Tsuyoshi Kogawa

IPC: H03D1/00 ,  H04L27/06 ,  H04L27/38

CPC classification number: H04L27/38 ,  H04L27/3863

Abstract: According to one embodiment, a quadrature error compensating circuit for acquiring an in-phase component signal and a quadrature component signal, includes a first filter, a first multiplier, a first subtractor, a second filter, a correlation calculating circuit. The first multiplier multiplies the in-phase component signal by a control value. The correlation calculating circuit calculates a cross-correlation value between an output of the first filter and an output of the second filter, and uses the cross-correlation value as the control value.

Abstract translation: 根据一个实施例，用于获取同相分量信号和正交分量信号的正交误差补偿电路包括第一滤波器，第一乘法器，第一减法器，第二滤波器，相关计算电路。 第一乘法器将同相分量信号乘以控制值。 相关计算电路计算第一滤波器的输出和第二滤波器的输出之间的互相关值，并使用互相关值作为控制值。

公开(公告)号：US20120195296A1

公开(公告)日：2012-08-02

申请号：US13223587

申请日：2011-09-01

Applicant: Tomoko ADACHI ,  Koichiro Ban ,  Tomoya Tandai ,  Hideo Kasami

Inventor： Tomoko ADACHI ,  Koichiro Ban ,  Tomoya Tandai ,  Hideo Kasami

IPC: H04W84/12

CPC classification number: H04W52/34 ,  H04W16/14 ,  H04W52/54 ,  H04W72/048 ,  H04W72/082 ,  H04W74/0808 ,  H04W84/12 ,  H04W88/06

Abstract: According to embodiments, a wireless communication apparatus supports at least a second wireless communication scheme between a first, wireless communication scheme and the second wireless communication scheme. The first wireless communication scheme requires that a wireless medium is determined to be busy when a reception level is equal to or greater than a minimum reception sensitivity level of physical scheme. The apparatus includes a first processing unit and a second processing unit. The first processing unit is configured to set a value lower than a maximum transmission power of the first wireless communication scheme, for a maximum transmission power of the second wireless communication scheme and set a value greater than the minimum reception sensitivity level, of the physical scheme, for a carrier sense level, when the second wireless communication scheme is used. The second processing unit is configured to carry out carrier sense using the carrier sense level.

Abstract translation: 根据实施例，无线通信装置支持第一无线通信方案和第二无线通信方案之间的至少第二无线通信方案。 第一无线通信方案要求当接收电平等于或大于物理方案的最小接收灵敏度级别时，无线介质被确定为忙。 该装置包括第一处理单元和第二处理单元。 第一处理单元被配置为针对第二无线通信方案的最大发送功率设置低于第一无线通信方案的最大发送功率的值，并且设置大于物理方案的最小接收灵敏度水平的值 对于载波感测电平，当使用第二无线通信方案时。 第二处理单元被配置为使用载波感测电平来执行载波侦听。