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1.发明授权Wireless communication method using OFDM and OFDM transmitter and receiver thereof 有权使用OFDM和OFDM发射机的无线通信方法及其接收机公开(公告)号：US07626921B2
公开(公告)日：2009-12-01
申请号：US11669478
申请日：2007-01-31
申请人： Yoshimasa Egashira , Yasuhiko Tanabe , Kazumi Sato
发明人： Yoshimasa Egashira , Yasuhiko Tanabe , Kazumi Sato
IPC分类号： H04J11/00
CPC分类号： H04L5/0048 , H04L5/0007 , H04L25/0226 , H04L25/03159 , H04L2025/03414 , H04L2027/0016 , H04L2027/0024
摘要： A wireless communication method includes generating and transmitting an OFDM signal containing a first OFDM symbol possessing a first transmitting pilot signal and a second transmitting pilot signal respectively allocated to a first subcarrier and a second subcarrier being symmetric with respect to a center frequency on a frequency axis, and a second OFDM symbol possessing a third transmitting pilot signal and a fourth transmitting pilot signal respectively allocated to the first subcarrier and the second subcarrier, wherein a difference between a product of a first transmitting pilot signal and a complex conjugate of a fourth transmitting pilot signal and a product of a third transmitting pilot signal and a complex conjugate of a second transmitting pilot signal is non-zero.
摘要翻译： 一种无线通信方法，包括生成和发送包含分别分配给第一子载波的第一OFDM符号的第一OFDM符号和相对于频率轴上的中心频率对称的第二副载波的OFDM信号 以及分别分配给第一子载波和第二副载波的第三发送导频信号和第四发送导频信号的第二OFDM符号，其中，第一发射导频信号与第四发射导频的复共轭的乘积之差 信号和第三发射导频信号与第二发射导频信号的复共轭的乘积不为零。
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公开(公告)号：US20080279292A1
公开(公告)日：2008-11-13
申请号：US12052012
申请日：2008-03-20
申请人： Yasuhiko TANABE , Yoshimasa Egashira , Kazumi Sato
发明人： Yasuhiko TANABE , Yoshimasa Egashira , Kazumi Sato
IPC分类号： H04L27/28
CPC分类号： H04L27/261 , H04L5/0051 , H04L25/022 , H04L25/0226
摘要： The wireless transmission apparatus generates one or a plurality of Orthogonal Frequency Division Multiplexing (OFDM) symbols for channel estimation, each OFDM symbol including plural subcarriers and having a known signal sequence of known signals which are linearly independent between adjacent subcarriers, and transmits the OFDM symbols.
摘要翻译： 无线发送装置生成用于信道估计的一个或多个正交频分复用（OFDM）符号，每个OFDM符号包括多个子载波，并且具有在相邻子载波之间是线性独立的已知信号的已知信号序列，并且发送OFDM符号 。
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3.发明申请WIRELESS COMMUNICATION METHOD USING OFDM AND OFDM TRANSMITTER AND RECEIVER THEREOF 有权使用OFDM和OFDM发射机的无线通信方法及其接收机公开(公告)号：US20070201351A1
公开(公告)日：2007-08-30
申请号：US11669478
申请日：2007-01-31
申请人： Yoshimasa EGASHIRA , Yasuhiko Tanabe , Kazumi Sato
发明人： Yoshimasa EGASHIRA , Yasuhiko Tanabe , Kazumi Sato
CPC分类号： H04L5/0048 , H04L5/0007 , H04L25/0226 , H04L25/03159 , H04L2025/03414 , H04L2027/0016 , H04L2027/0024
摘要： A wireless communication method includes generating and transmitting an OFDM signal containing a first OFDM symbol possessing a first transmitting pilot signal and a second transmitting pilot signal respectively allocated to a first subcarrier and a second subcarrier being symmetric with respect to a center frequency on a frequency axis, and a second OFDM symbol possessing a third transmitting pilot signal and a fourth transmitting pilot signal respectively allocated to the first subcarrier and the second subcarrier, wherein a difference between a product of a first transmitting pilot signal and a complex conjugate of a fourth transmitting pilot signal and a product of a third transmitting pilot signal and a complex conjugate of a second transmitting pilot signal is non-zero.
摘要翻译： 一种无线通信方法，包括生成和发送包含分别分配给第一子载波的第一OFDM符号的第一OFDM符号和相对于频率轴上的中心频率对称的第二副载波的OFDM信号 以及分别分配给第一子载波和第二副载波的第三发送导频信号和第四发送导频信号的第二OFDM符号，其中，第一发射导频信号与第四发射导频的复共轭的乘积之差 信号和第三发射导频信号与第二发射导频信号的复共轭的乘积不为零。
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公开(公告)号：US08412196B2
公开(公告)日：2013-04-02
申请号：US11844151
申请日：2007-08-23
摘要： There is disclosed a notification method in a communication system of notifying specific multifunctionality information between terminal stations. An expansion code is generated from both a user input code and a function identification code corresponding to a specific function. A transmission frame including the expansion code is also generated and transmitted to at least one of the terminal stations.
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公开(公告)号：US20120134447A1
公开(公告)日：2012-05-31
申请号：US13234596
申请日：2011-09-16
申请人： Kazumi Sato , Yosuke Ogasawara
发明人： Kazumi Sato , Yosuke Ogasawara
CPC分类号： H03L7/0891 , H03L7/093 , H04L7/033
摘要： According to one embodiment, an analog unit performs frequency conversion of a reception signal. A digital unit performs demodulation processing of the reception signal subjected to the frequency conversion by the analog unit. A PLL circuit generates a clock of the digital unit. A PLL-setting changing unit performs, based on the reception signal, a setting change of parameters of the PLL circuit to thereby control the jitter of the clock.
摘要翻译： 根据一个实施例，模拟单元执行接收信号的频率转换。 数字单元对通过模拟单元进行频率转换的接收信号执行解调处理。 PLL电路产生数字单元的时钟。 PLL设置改变单元基于接收信号执行PLL电路的参数的设置改变，从而控制时钟的抖动。
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公开(公告)号：US07940869B2
公开(公告)日：2011-05-10
申请号：US11345488
申请日：2006-02-02
申请人： Tomoya Tandai , Tomoko Adachi , Yoriko Utsunomiya , Daisuke Takeda , Kazumi Sato , Koji Ogura
发明人： Tomoya Tandai , Tomoko Adachi , Yoriko Utsunomiya , Daisuke Takeda , Kazumi Sato , Koji Ogura
CPC分类号： G01S7/021
摘要： Radio communication system includes terminal including unit detecting radar wave transmitted through second-frequency channel, first-and-second-frequency channels through which radar wave fails to be transmitted being simultaneously utilized or one of first-and-second-frequency channels being utilized, unit generating radar-detection information including information indicating detection time when detecting unit detects radar wave, and information indicating frequency channel through which radar wave is transmitted, and unit transmitting radar-detection information, and base station including unit receiving radar-detection information, unit generating radar-occurrence information based on received-radar-detection information, radar-occurrence information including information indicating occurrence time when radar wave occurs, information indicating period of occurrence of radar wave, and information indicating frequency channel through which radar wave is transmitted, and unit transmitting radar-occurrence information, terminal further including unit receiving radar-occurrence information, and unit communicating with other terminals through second-frequency channel without using base station when radar wave fails to occur, based on received-radar-occurrence information.
摘要翻译： 无线电通信系统包括：终端，包括通过第二频道发送的雷达波的单元检测，同时利用雷达波不能发送的第一和第二频率信道，或利用第一和第二频道中的一个， 单元产生雷达检测信息，包括指示检测单元检测雷达波时的检测时间的信息，以及指示雷达波发射的频道的信息，以及发送雷达检测信息的单元，以及包括接收雷达检测信息的单元的基站 基于接收雷达检测信息生成雷达发生信息，包括表示发生雷达波的发生时间的信息的雷达发生信息，表示雷达波的发生期间的信息以及表示雷达波发送的频道的信息，以及 单位传输 基于接收到的雷达发生信息，终端还包括接收雷达发生信息的单元，以及当雷达波不能发生时不使用基站通过第二频道与其他终端通信的单元。
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公开(公告)号：US20100189205A1
公开(公告)日：2010-07-29
申请号：US12683039
申请日：2010-01-06
申请人： Hiroshi Yoshida , Kazumi Sato , Takehiko Toyoda
发明人： Hiroshi Yoshida , Kazumi Sato , Takehiko Toyoda
IPC分类号： H04B1/10
CPC分类号： H04B1/10
摘要： A receiver circuit includes an LPF configured to remove an interference signal and/or a noise from a received signal, an ADC configured to digitize a signal output from the LPF, an FIR filter configured to further remove an interference signal and/or a noise from the signal output from the ADC and compensate imperfection in in-band characteristics caused in the LPF, a delay circuit configured to delay the signal output from the ADC by a predetermined time period, and a control circuit configured to control a destination of the signal output from the ADC, wherein the control circuit switches the destination of the signal output from the ADC to one of the FIR filter and the delay circuit according to a predetermined condition.
摘要翻译： 接收机电路包括被配置为从接收信号去除干扰信号和/或噪声的LPF，被配置为数字化从LPF输出的信号的ADC，被配置为进一步去除干扰信号和/或噪声的FIR滤波器 从ADC输出的信号并且补偿在LPF中引起的带内特性中的缺陷，延迟电路被配置为将来自ADC的信号延迟预定时间段，以及控制电路，被配置为控制信号输出的目的地 其中控制电路根据预定条件将从ADC输出的信号的目的地切换到FIR滤波器和延迟电路之一。
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8.发明授权公开(公告)号：US07640388B2
公开(公告)日：2009-12-29
申请号：US10961299
申请日：2004-10-08
申请人： Katsuya Nakashima , Hideki Hara , Takashi Akai , Toshifumi Nomura , Kazumi Sato , Yukihisa Tsuneda , Toshiyuki Nishihara
发明人： Katsuya Nakashima , Hideki Hara , Takashi Akai , Toshifumi Nomura , Kazumi Sato , Yukihisa Tsuneda , Toshiyuki Nishihara
IPC分类号： G06F13/10
CPC分类号： G06F11/1435 , G11C13/0007 , G11C2213/31
摘要： A file storage apparatus capable of restoring integrity of file management information even when a power supply abnormality occurs without lowering the write speed. When updating meta data stored in an HDD, log data for reconstructing the meta data after update from the meta data before update is written into a non-volatile RAM (NVRAM), then, after this writing is completed, the update is executed. Accordingly, even when the update use meta data temporarily stored in a cache memory is partially lost due to trouble such as a power supply abnormality and when update of the meta data of a hard disk is incomplete, the log data corresponding to the meta data for the update is held in the NVRAM, so it becomes possible to restore the integrity of the meta data on the hard disk by using this log data.
摘要翻译： 即使在电源异常发生而不降低写入速度的情况下，也能够恢复文件管理信息的完整性的文件存储装置。 当更新存储在HDD中的元数据时，用于将更新后的元数据重新构建的更新前的元数据的日志数据写入非易失性RAM（NVRAM）中，则在写入完成之后，执行更新。 因此，即使当由于诸如电源异常的故障而暂时存储在高速缓冲存储器中的元数据部分地丢失，并且当硬盘的元数据的更新不完整时，即使对应于用于 该更新被保存在NVRAM中，因此可以通过使用该日志数据恢复硬盘上的元数据的完整性。
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公开(公告)号：US20090195215A1
公开(公告)日：2009-08-06
申请号：US12357191
申请日：2009-01-21
申请人： Kazumi Sato , Masatsugu Honma
发明人： Kazumi Sato , Masatsugu Honma
IPC分类号： H02J7/04
CPC分类号： H01M10/443
摘要： A charging apparatus is provided and is configured to accept temperature information corresponding to a temperature of a secondary battery or a battery pack, supply a charging current to the secondary battery or the battery pack when the temperature is within a set charge temperature range, and interrupt the charging current when the temperature is beyond the set charge temperature range.
摘要翻译： 提供充电装置，并且被配置为接受对应于二次电池或电池组的温度的温度信息，当温度在设定的充电温度范围内时，向二次电池或电池组提供充电电流，并且中断 当温度超出设定充电温度范围时的充电电流。
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公开(公告)号：US07447271B2
公开(公告)日：2008-11-04
申请号：US11930326
申请日：2007-10-31
申请人： Koji Akita , Kazumi Sato , Kuniaki Ito , Akihiro Tsujimura
发明人： Koji Akita , Kazumi Sato , Kuniaki Ito , Akihiro Tsujimura
IPC分类号： H04B7/02
CPC分类号： H04B7/0874
摘要： Radio receiving apparatus includes antennas, radio units adjusting gains of received signals, and outputting the adjusted received signals, respectively, converters converting the adjusted received signals into digital signals, selector device which selects several of the digital signals, combination of the selected digital signals exhibiting good receiving characteristic, controller which determines the gains and outputs single control signal included in information of the determined gains to certain radio units, the certain radio units being included in the radio units and connected to certain converters of the converters which output digital signals included in the selected combination, weight calculator which calculates weight for each of the selected digital signals to enhance the receiving characteristic if the controller outputs the single control signal, synthesizer which synthesizes, into synthetic digital signal, digital signals obtained by multiplying each of the selected digital signals by the weight, and demodulator which demodulates the synthetic digital signal.
摘要翻译： 无线接收装置包括天线，无线电单元，分别调整接收信号的增益，并分别输出经调整的接收信号，将经调整的接收信号转换为数字信号的转换器，选择数字信号的选择装置，所选数字信号的组合表现 良好的接收特性，控制器，其确定增益和输出包括在确定的增益的信息中的单个控制信号到某些无线电单元，所述某些无线电单元包括在无线电单元中并连接到转换器的某些转换器，该转换器输出包括在 所选择的组合，权重计算器，其计算每个所选数字信号的权重，以在控制器输出单个控制信号时提高接收特性，合成器将合成数字信号合成为通过将所选择的二进制 重量信号，解调合成数字信号的解调器。
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