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    • 1. 发明授权
    • Frequency division multiplexed signal generating apparatus and related
decoding apparatus
    • 频分复用信号生成装置及相关解码装置
    • US5822323A
    • 1998-10-13
    • US716967
    • 1996-09-20
    • Keiichi KanekoKatsumi Ohno
    • Keiichi KanekoKatsumi Ohno
    • H04L27/26H04J1/00
    • H04L27/2614H04L27/2628H04L27/265
    • An IDFT section has a set of input terminals subjected to components of an information signal respectively. The IDFT section subjects the information signal to inverse discrete Fourier transform to convert the information signal into a pair of a first in-phase signal and a first quadrature signal while assignment of the components of the information signal to the input terminals is in a first state. A first power-related value of one of the first in-phase signal and the first quadrature signal is calculated. The first in-phase signal and the first quadrature signal are written into an output buffer memory when the calculated first power-related value does not exceed a predetermined reference value. The assignment of the components of the information signal to the input terminals is changed from the first state to a second state when the calculated first power-related value exceeds the predetermined reference value. The IDFT section subjects the information signal to inverse discrete Fourier transform to convert the information signal into a pair of a second in-phase signal and a second quadrature signal while the assignment of the components of the information signal to the input terminals is in the second state. A second power-related value of one of the second in-phase signal and the second quadrature signal is calculated. The second in-phase signal and the second quadrature signal are written into the output buffer memory when the calculated second power-related value does not exceed the predetermined reference value.
    • IDFT部分具有分别经受信息信号分量的一组输入端。 IDFT部分将信息信号进行逆离散付里叶变换,以将信息信号的分量分配给输入端处于第一状态,将信息信号转换为一对第一同相信号和第一正交信号 。 计算第一同相信号和第一正交信号之一的第一功率相关值。 当计算的第一功率相关值不超过预定参考值时,第一同相信号和第一正交信号被写入输出缓冲存储器。 当所计算的第一功率相关值超过预定参考值时,信息信号的分量到输入端的分配从第一状态改变到第二状态。 IDFT部分使信息信号进行离散傅里叶逆变换,以将信息信号转换为一对第二同相信号和第二正交信号,同时将信息信号的分量分配给输入端处于第二 州。 计算第二同相信号和第二正交信号之一的第二功率相关值。 当所计算的第二功率相关值不超过预定参考值时,第二同相信号和第二正交信号被写入输出缓冲存储器。
    • 2. 发明授权
    • Method and apparatus for generating transmission signal by processing which includes digital quadrature modulation
    • 用于通过包括数字正交调制的处理产生传输信号的方法和装置
    • US06862321B2
    • 2005-03-01
    • US09804396
    • 2001-03-13
    • Keiichi KanekoKazunari Matsui
    • Keiichi KanekoKazunari Matsui
    • H04L27/18H04J11/00H04L27/26H04L27/34H04L25/49H04K1/10H04L27/28
    • H04L27/2627
    • Non-compensation signal points are determined in a two-dimensional plane without considering a signal error caused by digital quadrature modulation. The two-dimensional plane is defined by a real axis and an imaginary axis. The real axis corresponds to real-part signal components. The imaginary axis corresponds to imaginary-part signal components. Compensation signal points are determined in the two-dimensional plane in response to a signal error caused by digital quadrature modulation if the non-compensation signal points are used. The non-compensation signal points and the compensation signal points are point-symmetry. Digital information signal pieces are sequentially assigned to one of the compensation signal points in response to contents of the digital information signal pieces. The digital information pieces are subjected to a modulation process including digital quadrature modulation in response to the above-mentioned assignment to generate a radio-frequency transmission signal.
    • 在不考虑由数字正交调制引起的信号误差的情况下,在二维平面中确定非补偿信号点。 二维平面由实轴和虚轴定义。 实轴对应于实部信号分量。 虚轴对应于虚部信号分量。 如果使用非补偿信号点,则响应于由数字正交调制引起的信号误差,在二维平面中确定补偿信号点。 非补偿信号点和补偿信号点是点对称的。 响应于数字信息信号片段的内容,数字信息信号片依次分配给补偿信号点之一。 对数字信息片进行响应于上述分配的数字正交调制的调制处理,生成射频发送信号。
    • 4. 发明授权
    • Disk drive with stored positioning data related to disk expansion
    • 具有与磁盘扩展相关的存储的定位数据的磁盘驱动器
    • US4731680A
    • 1988-03-15
    • US943751
    • 1986-12-19
    • Masakatsu MoriyamaKeiichi Kaneko
    • Masakatsu MoriyamaKeiichi Kaneko
    • G11B19/20G11B5/55G11B5/596G11B21/08G11B21/10
    • G11B5/556
    • A disk drive apparatus includes apparatus for elimination of off-track errors of a read/write head by deriving and storing correction data for all of the tracks on a disk on the basis of the signal level resulting from read-out of the contents of gap portions of the format data in two specific tracks. If, as indicated by a read error indication signal from a host computer, read errors subsequently occur in spite of position correction based on a stored correction value, then the off-track error for the track concerned is detected and an updated correction value is derived and stored. Accurate position control is thereby attained without a need for servo data tracks or regions to be recorded on each disk.
    • 磁盘驱动装置包括:通过基于从读出的间隙内容得到的信号电平导出并存储盘上所有磁道的校正数据来消除读/写磁头的偏离磁道错误的装置 两个特定轨道中的格式数据的部分。 如果由主计算机的读取错误指示信号所指示的,即使基于存储的校正值进行位置校正,随后发生读取错误,则检测到相关轨道的偏离轨迹误差并导出更新的校正值 并存储。 由此可以实现精确的位置控制,而不需要在每个盘上记录伺服数据轨迹或区域。
    • 7. 发明授权
    • Fuel cell
    • 燃料电池
    • US08129070B2
    • 2012-03-06
    • US13132554
    • 2008-12-12
    • Shinji JomoriNaoki TakehiroTatsuya AraiKeiichi KanekoTakumi Taniguchi
    • Shinji JomoriNaoki TakehiroTatsuya AraiKeiichi KanekoTakumi Taniguchi
    • H01M8/10
    • H01M8/2483H01M8/0258H01M8/2457H01M2008/1095H01M2250/10H01M2250/20Y02B90/14Y02T90/32
    • The present invention provides a fuel cell having obstructed passages, which is capable of inhibiting the occurrence of flooding. The fuel cell comprises: a stacked body comprising at least a membrane electrode assembly; and a pair of separators sandwiching the stacked body. A face of the stacked body side of the separator is provided with inlet passage(s) through which reaction gas to be supplied to the stacked body passes and outlet passage(s) through which reaction gas having passed the stacked body passes. The inlet passage is obstructed at a downstream end of the reaction gas to be supplied to the stacked body and the outlet passage is obstructed at an upstream end of the reaction gas having passed through the stacked body. The inlet passage and the outlet passage is arranged separately from each other, and the inlet passage is arranged on both ends of the face of the stacked body side of the separator in the passage width direction of the inlet passage and the outlet passage.
    • 本发明提供一种具有阻碍通气的燃料电池,能够抑制淹水的发生。 燃料电池包括:至少包括膜电极组件的堆叠体; 以及夹着堆叠体的一对分离器。 隔板的层叠体侧的面设置有供给层叠体的反应气体通过的入口通路和通过了层叠体的反应气体通过的出口通路。 入口通道在反应气体的下游端被阻塞以供应到堆叠体,并且出口通道在通过堆叠体的反应气体的上游端被阻塞。 入口通道和出口通道彼此分开布置,并且入口通道沿着入口通道和出口通道的通道宽度方向布置在隔板的堆叠体侧面的两端。
    • 8. 发明申请
    • FUEL CELL
    • 燃料电池
    • US20110123896A1
    • 2011-05-26
    • US12675092
    • 2008-12-12
    • Shinji JomoriNaoki TakehiroTatsuya AraiKeiichi KanekoTakumi Taniguchi
    • Shinji JomoriNaoki TakehiroTatsuya AraiKeiichi KanekoTakumi Taniguchi
    • H01M8/10
    • H01M8/0265H01M8/0258H01M8/026H01M8/0263H01M8/0267H01M2008/1095
    • The present invention provides a fuel cell having a blocked passage and showing capability of inhibiting desiccation and flooding of the membrane electrode assembly. The fuel cell comprises: a laminated body comprising at least a membrane electrode assembly which includes: an electrolyte membrane, an anode catalyst layer arranged on one surface of the electrolyte membrane, and a cathode catalyst layer arranged on the other surface of the electrolyte membrane; and a pair of separators sandwiching the laminated body, wherein, between the pair of separators, along the laminated body side surface of at least one separator, an inlet passage is provided for getting through a reaction gas supplied to the laminated body and an outlet passage is provided for getting through a reaction gas having passed through the laminated body; the inlet passage is blocked at a downstream end of the reaction gas being supplied to the laminated body and the outlet passage is blocked at an upstream end of the reaction gas having passed through the laminated body; the inlet passage and the outlet passage are arranged separately from each other along the separator; and the depth of the upstream region of the inlet passage is larger than that of the downstream region of the inlet passage.
    • 本发明提供一种具有堵塞通道并具有抑制膜电极组件的干燥和溢流的能力的燃料电池。 燃料电池包括:至少包括膜电极组件的层压体,其包括:电解质膜,布置在电解质膜的一个表面上的阳极催化剂层和布置在电解质膜的另一个表面上的阴极催化剂层; 以及一对夹着所述层叠体的分离器,其中,在所述一对分离器之间沿着至少一个分离器的层叠体侧表面设置有入口通道,用于通过供给到所述层叠体的反应气体和出口通道 用于通过已经通过层叠体的反应气体; 入口通道被阻塞在反应气体的下游端被供应到层压体,并且出口通道在通过层压体的反应气体的上游端被阻塞; 入口通道和出口通道沿分离器彼此分开布置; 并且入口通道的上游区域的深度大于入口通道的下游区域的深度。