公开(公告)号：US20080292018A1

公开(公告)日：2008-11-27

申请号：US12120794

申请日：2008-05-15

申请人： Norikazu Kohara ,  Seiichiro Horikawa

发明人： Norikazu Kohara ,  Seiichiro Horikawa

IPC分类号： H04L27/36

CPC分类号： H04L25/03834 ,  H03D3/007 ,  H04L27/04

摘要： A vestigial sideband (VSB) modulation apparatus includes a signal processing unit which extracts an I-axis data signal component and a Q-axis data signal component from a baseband signal with symbol data superimposed thereon, a band-limiting filter which frequency-shifts the I-axis data signal component and the Q-axis data signal component, extracted by the signal processing unit, by only a specific frequency smaller than a rate of the symbol data and limits a passband width by a frequency width smaller than the rate of the symbol data, and a quadrature modulating unit which obtains a VSB modulation signal by quadrature-modulating the I-axis data signal component and the Q-axis data signal component output from the band-limiting filter.

摘要翻译： 残留边带（VSB）调制装置包括信号处理单元，其从其上叠加符号数据的基带信号中提取I轴数据信号分量和Q轴数据信号分量，频带偏移 I轴数据信号分量和由信号处理单元提取的Q轴数据信号分量仅仅是比符号数据的速率小的特定频率，并且将通带宽度限制在小于 符号数据和正交调制单元，其通过正交调制来自带限滤波器的I轴数据信号分量和Q轴数据信号分量来获得VSB调制信号。

公开(公告)号：US08102942B2

公开(公告)日：2012-01-24

申请号：US12120794

申请日：2008-05-15

申请人： Norikazu Kohara ,  Seiichiro Horikawa

发明人： Norikazu Kohara ,  Seiichiro Horikawa

IPC分类号： H04L27/36

CPC分类号： H04L25/03834 ,  H03D3/007 ,  H04L27/04

摘要： A vestigial sideband (VSB) modulation apparatus includes a signal processing unit which extracts an I-axis data signal component and a Q-axis data signal component from a baseband signal with symbol data superimposed thereon, a band-limiting filter which frequency-shifts the I-axis data signal component and the Q-axis data signal component, extracted by the signal processing unit, by only a specific frequency smaller than a rate of the symbol data and limits a passband width by a frequency width smaller than the rate of the symbol data, and a quadrature modulating unit which obtains a VSB modulation signal by quadrature-modulating the I-axis data signal component and the Q-axis data signal component output from the band-limiting filter.

摘要翻译： 残留边带（VSB）调制装置包括信号处理单元，其从其上叠加符号数据的基带信号中提取I轴数据信号分量和Q轴数据信号分量，频带偏移 I轴数据信号分量和由信号处理单元提取的Q轴数据信号分量仅仅是比符号数据的速率小的特定频率，并且将通带宽度限制在小于 符号数据和正交调制单元，其通过正交调制来自带限滤波器的I轴数据信号分量和Q轴数据信号分量来获得VSB调制信号。

公开(公告)号：US09288693B2

公开(公告)日：2016-03-15

申请号：US13676756

申请日：2012-11-14

申请人： Seiichiro Horikawa ,  Koji Akita

发明人： Seiichiro Horikawa ,  Koji Akita

IPC分类号： H04B5/00 ,  H04W36/14 ,  H04W36/26 ,  H04W24/04

CPC分类号： H04W24/04 ,  H04B5/0031 ,  H04W36/14 ,  H04W36/26

摘要： A wireless communication device has a first wireless unit, a second wireless unit, a storage, a communication judging unit, a threshold value retaining unit configured to retain a threshold value used to judge whether or not to permit a switch from the first wireless unit to the second wireless unit, a remaining volume monitoring unit configured to judge, when the communication judging unit judges that the first wireless unit has disconnected communication, whether volume of remaining unreceived data to be incorporated into the data received by the first wireless unit before the disconnection of communication is smaller than the threshold value retained by the threshold value retaining unit, and a controller configured to start receiving the unreceived data by switching from the first wireless unit to the second wireless unit, when the volume of remaining unreceived data is judged to be small by the remaining volume monitoring unit.

摘要翻译： 无线通信设备具有第一无线单元，第二无线单元，存储器，通信判断单元，阈值保持单元，其被配置为保留用于判断是否允许从第一无线单元切换到 所述第二无线单元，剩余容量监视单元，被配置为当所述通信判断单元判断所述第一无线单元具有断开的通信时，判断要被并入所述第一无线单元在断开之前接收的数据中的剩余未接收数据的容量 的通信量小于由阈值保持单元保持的阈值，以及控制器，被配置为通过从第一无线单元切换到第二无线单元而开始接收未接收数据，当判定剩余未接收数据的量为 小于剩余体积监测单位。

公开(公告)号：US09141781B2

公开(公告)日：2015-09-22

申请号：US13415264

申请日：2012-03-08

申请人： Koji Akita ,  Seiichiro Horikawa ,  Hideo Kasami

发明人： Koji Akita ,  Seiichiro Horikawa ,  Hideo Kasami

IPC分类号： G05B19/00 ,  G06F21/35

CPC分类号： H04W12/06 ,  G06F21/35

摘要： According to one embodiment, a card device includes an authentication unit, a wireless communication unit, and a control unit. The authentication unit performs an authentication process with an external device via wired communication. The wireless communication unit performs wireless communication with the external device. The control unit controls the wireless communication unit to reduce radio waves radiated from the wireless communication unit when the control unit detects that the authentication process is being performed.

摘要翻译： 根据一个实施例，卡设备包括认证单元，无线通信单元和控制单元。 认证单元通过有线通信与外部设备进行认证处理。 无线通信单元与外部设备进行无线通信。 当控制单元检测到正在进行认证处理时，控制单元控制无线通信单元以减少从无线通信单元辐射的无线电波。

公开(公告)号：US20080025431A1

公开(公告)日：2008-01-31

申请号：US11689092

申请日：2007-03-21

申请人： Seiichiro Horikawa ,  Hideo Kasami ,  Hiroshi Yoshida

发明人： Seiichiro Horikawa ,  Hideo Kasami ,  Hiroshi Yoshida

IPC分类号： H04L27/00

CPC分类号： H04L27/2071 ,  H04L27/00 ,  H04L27/2075 ,  H04L27/2278 ,  H04L27/2331

摘要： A transmitting apparatus converts a unit data item of the unit data items having a predetermined bit length into a time shift amount, stores, in a memory, a first symbol including a plurality of samples, generates a second symbol corresponding to the unit data item by cyclically shifting the samples in the first symbol by the time shift amount, and transmits the second symbol. A receiving apparatus receives two consecutive symbols each including a plurality of samples, detects sample values of the samples in each of the symbols, detects a time shift amount between the symbols based on the sample values of the samples in each of the symbols, and converts the time shift amount into a data item having the bit length.

摘要翻译： 发送装置将具有预定比特长度的单位数据项的单位数据项转换为时移量，在存储器中存储包含多个样本的第一符号，生成与单位数据项对应的第二符号， 将第一符号中的样本循环移位时移量，并发送第二符号。 接收装置接收两个包括多个样本的连续符号，检测每个符号中的采样的采样值，根据每个符号中的样本的采样值，检测符号之间的时移量，并将其转换 将时间量转换成具有位长度的数据项。

公开(公告)号：US20070127361A1

公开(公告)日：2007-06-07

申请号：US11531190

申请日：2006-09-12

申请人： Hideo Kasami ,  Hidehiro Matsuoka ,  Noritaka Deguchi ,  Seiichiro Horikawa

发明人： Hideo Kasami ,  Hidehiro Matsuoka ,  Noritaka Deguchi ,  Seiichiro Horikawa

IPC分类号： H04J11/00

CPC分类号： H04L27/2647 ,  H04L27/2602

摘要： According to an aspect of the present invention, there is provided with an OFDM (Orthogonal Frequency Division Multiplexing) transmission apparatus, including: a subcarrier modulator configured to perform subcarrier modulation on a data sequence to generate subcarrier modulated signals; an IFFT unit configured to perform IFFT (Inverse Fast Fourier Transform) processing on the subcarrier modulated signals to generate a first OFDM symbol having a length corresponding to the number of FFT points at the IFFT processing; a symbol length shortener configured to obtain a part of the generated first OFDM symbol as a second OFDM symbol; and a transmitter configured to transmit the second OFDM symbol obtained to an other communication apparatus.

摘要翻译： 根据本发明的一个方面，提供了一种OFDM（正交频分复用）传输装置，包括：副载波调制器，被配置为对数据序列执行子载波调制以产生副载波调制信号; IFFT单元，被配置为对所述子载波调制信号执行IFFT（快速傅里叶逆变换）处理，以产生具有与所述IFFT处理中的FFT点数相对应的长度的第一OFDM符号; 符号长度缩短器，被配置为获得所生成的第一OFDM符号的一部分作为第二OFDM符号; 以及发送器，被配置为将获得的第二OFDM符号发送到另一通信装置。

公开(公告)号：US08577946B2

公开(公告)日：2013-11-05

申请号：US13361081

申请日：2012-01-30

申请人： Seiichiro Horikawa ,  Koichiro Ban

发明人： Seiichiro Horikawa ,  Koichiro Ban

IPC分类号： G06F15/00

CPC分类号： H04L27/265 ,  G06F17/142 ,  H04L27/2628

摘要： There is provided a signal receiving apparatus including first to pth stage computers configured to apply, in a step-by-step manner, butterfly operations to 2N input values; and 2N registers configured to store values obtained by a p−1th stage computer wherein the pth stage computer includes (a) 2L butterfly operation circuits configured to transmit, from corresponding 2M output ports, values obtained by the butterfly operations based on values provided to 2M input ports and (b) 2L selecting circuits arranged corresponding to the butterfly operation circuits, each selecting circuit providing a value of a register corresponding to different one of 2L BFInOrder_i(j,t) (wherein, BFInOrder_i(j,t) denotes values obtained by converting BFOutOrder_i(j,t)=t+j*2(N−M)+i*2N−(M+L) or (2(N−(M+L))−1−t)+j*2(N−M)+i*2(N−(M+L)) expressed by base H to base 2M of (log2M 2N)−1 words, word-reversing the values converted to base 2M, and converting the word-reversed values to the base H).

摘要翻译： 提供一种信号接收装置，包括：第一至第三阶段计算机，被配置为以逐步的方式将蝶形运算应用于2N个输入值; 和2N个寄存器，其被配置为存储由第一级计算机​​获得的值，其中第p级计算机包括（a）2L蝶形运算电路，其被配置为基于提供给2M的值从相应的2M输出端口发送通过蝶形运算获得的值 输入端口和（b）对应于蝶形运算电路布置的2L选择电路，每个选择电路提供与2L BFInOrder_i（j，t）中的不同之一相对应的寄存器的值（其中，BFInOrder_i（j，t） 通过将BFOutOrder_i（j，t）= t + j * 2（NM）+ i * 2N-（M + L）或（2（N-（M + L））-1-t）+ j * ）+ i * 2（N-（M + L））由基本H表示为（log2M 2N）-1个字的2M，对字面反转转换为基本2M的值，并将字反转值转换为基数 H）。

公开(公告)号：US09232561B2

公开(公告)日：2016-01-05

申请号：US13683336

申请日：2012-11-21

申请人： Koji Akita ,  Takayoshi Ito ,  Seiichiro Horikawa ,  Hideo Kasami

发明人： Koji Akita ,  Takayoshi Ito ,  Seiichiro Horikawa ,  Hideo Kasami

IPC分类号： H04B7/00 ,  H04W88/06 ,  H04W8/22

CPC分类号： H04W88/06 ,  H04W8/22

摘要： A wireless communication device has a plurality of wireless units each configured to cover a different wireless communication range and be capable of receiving data in the corresponding wireless communication range, a status information generator provided corresponding to the wireless unit utilized to receive data among the plurality of wireless units, in order to generate status information concerning the wireless communication range of the wireless unit utilized to receive the data, and a storage configured to store the status information in association with the data.

摘要翻译： 无线通信设备具有多个无线单元，每个无线单元被配置为覆盖不同的无线通信范围并且能够接收相应无线通信范围内的数据;与用于在多个 无线单元，以便生成关于用于接收数据的无线单元的无线通信范围的状态信息;以及存储器，被配置为与数据相关联地存储状态信息。

公开(公告)号：US09158360B2

公开(公告)日：2015-10-13

申请号：US13418562

申请日：2012-03-13

申请人： Seiichiro Horikawa ,  Koji Akita ,  Hideo Kasami

发明人： Seiichiro Horikawa ,  Koji Akita ,  Hideo Kasami

IPC分类号： H04B1/38 ,  G06F1/32

CPC分类号： G06F1/3212 ,  G06F1/3296 ,  Y02D10/172 ,  Y02D10/174

摘要： In an embodiment, an electronic apparatus is mounted with a card unit including first and second devices driven with different driving voltages. The electronic apparatus includes: first and second voltage generating units, first and second control units. The first voltage generating unit generates a first driving voltage for driving the first device and a second driving voltage for driving the second device using electric power from the battery. The second voltage generating unit generates the first driving voltage and second driving voltage using electric power transmitted from the external device. The first control unit controls the first selection unit such that any one of the first driving voltage generated by the first voltage generating unit and the first driving voltage generated by the second voltage generating unit is selected depending on the electric power supply capability of the battery.

摘要翻译： 在一个实施例中，电子设备安装有具有由不同驱动电压驱动的第一和第二设备的卡单元。 电子设备包括：第一和第二电压产生单元，第一和第二控制单元。 第一电压产生单元使用来自电池的电力产生用于驱动第一装置的第一驱动电压和用于驱动第二装置的第二驱动电压。 第二电压产生单元使用从外部装置发送的电力产生第一驱动电压和第二驱动电压。 第一控制单元控制第一选择单元，使得由第一电压产生单元产生的第一驱动电压和由第二电压产生单元产生的第一驱动电压中的任何一个根据电池的电力供应能力来选择。

公开(公告)号：US08571150B2

公开(公告)日：2013-10-29

申请号：US13409611

申请日：2012-03-01

申请人： Seiichiro Horikawa ,  Koichiro Ban

发明人： Seiichiro Horikawa ,  Koichiro Ban

IPC分类号： H04L27/06

CPC分类号： H04L27/0014

摘要： According to one embodiment, a frequency offset compensation apparatus includes a first estimation unit, a second estimation unit, a setting unit, a synthesis unit and a compensation unit. The first estimation unit estimates a first rotation. The second estimation unit estimates a second rotation. The setting unit sets a weighting factor for the second rotation to a first value if a received power is less than a threshold value, and sets the weighting factor for the rotation to a second value being smaller than the first value if the received power is not less than the threshold value. The synthesis unit calculates a compensation value. The compensation unit compensates for a frequency offset.

摘要翻译： 根据一个实施例，频偏补偿装置包括第一估计单元，第二估计单元，设置单元，合成单元和补偿单元。 第一估计单元估计第一旋转。 第二估计单元估计第二旋转。 如果接收功率小于阈值，则设置单元将第二旋转的加权因子设置为第一值，并且如果接收功率不是阈值，则将旋转的加权因子设置为小于第一值的第二值 小于阈值。 合成单元计算补偿值。 补偿单元补偿频率偏移。