公开(公告)号：US07957476B2

公开(公告)日：2011-06-07

申请号：US11747676

申请日：2007-05-11

申请人： Yukitoshi Sanada ,  Hideki Yokoshima ,  Masayoshi Abe ,  Yuya Kondo ,  Mamiko Inamori ,  Kazuyuki Saijo

发明人： Yukitoshi Sanada ,  Hideki Yokoshima ,  Masayoshi Abe ,  Yuya Kondo ,  Mamiko Inamori ,  Kazuyuki Saijo

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04L27/2657 ,  H04L27/261 ,  H04L27/2663 ,  H04L27/2675

摘要： A wireless communication apparatus for receiving a packet formed of a signal modulated by OFDM includes the following elements. A band-pass filter extracts an OFDM signal of a desired band. A low-noise amplifier having a gain controlled according to a received-signal intensity amplifies the desired OFDM signal. A frequency converter down-converts the amplified OFDM signal into a baseband signal. An analog-digital converter converts the baseband signal into a digital signal. A first high-pass filter removes a DC offset from the baseband signal corresponding to a predetermined preamble portion of the packet. A frequency-offset estimator estimates a frequency offset from the sample signals constituting the baseband signal from which the DC offset has been removed by the first high-pass filter. A frequency-offset corrector removes the estimated frequency offset from the baseband signal. A demodulator demodulates subcarrier signals arranged in a frequency domain from the baseband signal compensated for the frequency offset.

摘要翻译： 用于接收由OFDM调制的信号形成的分组的无线通信装置包括以下要素。 带通滤波器提取期望频带的OFDM信号。 具有根据接收信号强度控制的增益的低噪声放大器放大所需的OFDM信号。 变频器将放大的OFDM信号下变频为基带信号。 模拟数字转换器将基带信号转换为数字信号。 第一高通滤波器从对应于分组的预定前同步码部分的基带信号中去除DC偏移。 频率偏移估计器估计构成通过第一高通滤波器去除了DC偏移的基带信号的采样信号的频率偏移。 频偏校正器去除基带信号的估计频偏。 解调器解调从频率补偿的基带信号中排列在频域中的副载波信号。

公开(公告)号：US20080089443A1

公开(公告)日：2008-04-17

申请号：US11747676

申请日：2007-05-11

申请人： Yukitoshi Sanada ,  Hideki Yokoshima ,  Masayoshi Abe ,  Yuya Kondo ,  Mamiko Inamori ,  Kazuyuki Saijo

发明人： Yukitoshi Sanada ,  Hideki Yokoshima ,  Masayoshi Abe ,  Yuya Kondo ,  Mamiko Inamori ,  Kazuyuki Saijo

IPC分类号： H04J11/00

CPC分类号： H04L27/2657 ,  H04L27/261 ,  H04L27/2663 ,  H04L27/2675

摘要： A wireless communication apparatus for receiving a packet formed of a signal modulated by OFDM includes the following elements. A band-pass filter extracts an OFDM signal of a desired band. A low-noise amplifier having a gain controlled according to a received-signal intensity amplifies the desired OFDM signal. A frequency converter down-converts the amplified OFDM signal into a baseband signal. An analog-digital converter converts the baseband signal into a digital signal. A first high-pass filter removes a DC offset from the baseband signal corresponding to a predetermined preamble portion of the packet. A frequency-offset estimator estimates a frequency offset from the sample signals constituting the baseband signal from which the DC offset has been removed by the first high-pass filter. A frequency-offset corrector removes the estimated frequency offset from the baseband signal. A demodulator demodulates subcarrier signals arranged in a frequency domain from the baseband signal compensated for the frequency offset.

摘要翻译： 用于接收由OFDM调制的信号形成的分组的无线通信装置包括以下要素。 带通滤波器提取期望频带的OFDM信号。 具有根据接收信号强度控制的增益的低噪声放大器放大所需的OFDM信号。 变频器将放大的OFDM信号下变频为基带信号。 模拟数字转换器将基带信号转换为数字信号。 第一高通滤波器从对应于分组的预定前同步码部分的基带信号中去除DC偏移。 频率偏移估计器估计构成通过第一高通滤波器去除了DC偏移的基带信号的采样信号的频率偏移。 频偏校正器去除基带信号的估计频偏。 解调器解调从频率补偿的基带信号中排列在频域中的副载波信号。

公开(公告)号：US20120248877A1

公开(公告)日：2012-10-04

申请号：US13426035

申请日：2012-03-21

申请人： Shigeru TAJIMA ,  Mamiko INAMORI

发明人： Shigeru TAJIMA ,  Mamiko INAMORI

IPC分类号： H02J1/00

CPC分类号： H02J1/08 ,  H02J1/108 ,  Y10T307/653

摘要： Disclosed herein is a power supply device including: a position detection signal output section configured to output a position detection signal to a line allowing a current flow in only one direction in response to an order to output the position detection signal from a power supply managing device connected to a bus line including the line; a position detection signal detector configured to detect the position detection signal that is output from another device and flows through the line; and a position detection signal responder configured to respond that the position detection signal is detected to the power supply managing device when the position detection signal is detected by the position detection signal detector.

摘要翻译： 这里公开了一种电源装置，包括：位置检测信号输出部，被配置为响应于从电源管理装置输出位置检测信号的顺序，将位置检测信号输出到允许仅在一个方向上的电流流动的线 连接到包括线路的总线; 位置检测信号检测器，被配置为检测从另一装置输出并流过所述线路的位置检测信号; 以及位置检测信号响应器，被配置为当位置检测信号检测器检测到位置检测信号时，响应于检测到位置检测信号到电源管理装置。

公开(公告)号：US09774184B2

公开(公告)日：2017-09-26

申请号：US13426035

申请日：2012-03-21

申请人： Shigeru Tajima ,  Mamiko Inamori

发明人： Shigeru Tajima ,  Mamiko Inamori

IPC分类号： H02J1/08 ,  H02J1/10

CPC分类号： H02J1/08 ,  H02J1/108 ,  Y10T307/653

摘要： Disclosed herein is a power supply device including: a position detection signal output section configured to output a position detection signal to a line allowing a current flow in only one direction in response to an order to output the position detection signal from a power supply managing device connected to a bus line including the line; a position detection signal detector configured to detect the position detection signal that is output from another device and flows through the line; and a position detection signal responder configured to respond that the position detection signal is detected to the power supply managing device when the position detection signal is detected by the position detection signal detector.