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131. 发明授权

US6058138A Radio reception system providing improved transmission quality 失效
标题翻译：无线电接收系统提供改善的传输质量
公开(公告)号：US6058138A
公开(公告)日：2000-05-02
申请号：US870606
申请日：1997-06-06
申请人： Hidenobu Fukumasa , Yasuyuki Oishi , Kazuo Nagatani , Hajime Hamada
发明人： Hidenobu Fukumasa , Yasuyuki Oishi , Kazuo Nagatani , Hajime Hamada
IPC分类号： H04B7/005 , G06F17/15 , H04B7/08 , H04L1/06 , H04B15/00 , H04K1/00 , H04L27/30
CPC分类号： H04B1/7115 , H04B7/0854 , H04L1/06 , H04B1/709
摘要： A radio receiver includes a plurality of demodulating units for demodulating a received radio wave received via a plurality of paths so as to produce respective demodulated signals, and combining units for executing a combination process of synchronizing and combining the demodulated signals produced by the plurality of demodulating units, the combining units correlating the demodulated signals produced by the plurality of demodulating units and excluding from a combination process a demodulated signal that meets a predetermined condition based on a predetermined algorithm.
摘要翻译：无线接收机包括多个解调单元，用于解调通过多个路径接收的接收的无线电波，以便产生各自的解调信号;以及组合单元，用于执行同步和组合由多个解调产生的解调信号单元，所述组合单元将由所述多个解调单元产生的解调信号相关，并且从组合处理除了基于预定算法的满足预定条件的解调信号。

132. 发明授权

US6028894A SIR or SNR measurement apparatus 失效
标题翻译： SIR或SNR测量装置
公开(公告)号：US6028894A
公开(公告)日：2000-02-22
申请号：US923839
申请日：1997-09-04
申请人： Yasuyuki Oishi , Kazuo Nagatani , Hidenobu Fukumasa , Hajime Hamada , Yoshihiko Asano
发明人： Yasuyuki Oishi , Kazuo Nagatani , Hidenobu Fukumasa , Hajime Hamada , Yoshihiko Asano
IPC分类号： H04L27/18 , H04B1/10 , H04B7/005 , H04B17/00 , H04B17/336 , H04J13/00 , H04L1/20 , H04L5/00
CPC分类号： H04B1/1027 , H04B17/21 , H04B17/336 , H04L1/20 , H04W52/24 , H04W52/08
摘要： SIR measurement for measuring S/N ratio, which is the ratio of a desired signal power to noise power, or S/I ratio, which is the ratio of desired signal power to interference signal power, uses a signal-point position altering unit for taking absolute values of an I component (in-phase component) and Q component (quadrature component) of a received signal to convert the received signal to a signal in the first quadrant of an I-Q orthogonal coordinate system, and for squaring the average value of the converted signal to obtain first average power (desired power) S, a received-power arithmetic unit for calculating the average value of the square of the received signal to obtain second average power, and for subtracting the desired power S from the received power to obtain noise power or interference power I, and a SIR arithmetic unit for calculating S/N ratio or S/I ratio from the desired signal power S and noise power or interference signal power I, and for outputting the ratio calculated.
摘要翻译：作为所需信号功率与噪声功率的比值的S / N比的SIR测量值或作为期望信号功率与干扰信号功率之比的S / I比使用信号点位置改变单元将接收信号的I分量（同相分量）和Q分量（正交分量）的绝对值转换为IQ正交坐标系的第一象限中的信号，并将平均值转换后的信号获得第一平均功率（期望功率）S，接收功率算术单元，用于计算接收信号的平方的平均值以获得第二平均功率，并且从接收功率中减去所需功率S 获得噪声功率或干扰功率I，以及用于根据期望信号功率S和噪声功率或干扰信号功率I计算S / N比或S / I比的SIR算术单元，并且用于输出比率计算 ed。

133. 发明授权

US5101722A Cylinder type silk-screen printing apparatus 失效
标题翻译：圆筒型丝印机
公开(公告)号：US5101722A
公开(公告)日：1992-04-07
申请号：US618458
申请日：1990-11-27
申请人： Kazuo Nagatani
发明人： Kazuo Nagatani
IPC分类号： B41F15/38 , B41F15/08 , B41F15/36
CPC分类号： B41F15/0827
摘要： During printing operations, the rack of a print frame and the rack of an operation piece attached to the bottom face of the print frame are continuous. These racks are engaged by gears attached to a print cylinder. The print frame is moved in synchronization with rotations of the cylinder. When printing is stopped, a camming arrangement raises the operation piece to release the operation piece from the gears so that the print frame can be pulled from the machine base independently from the cylinder.

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