公开(公告)号：US08301039B2

公开(公告)日：2012-10-30

申请号：US12620540

申请日：2009-11-17

申请人： Masato Nishihara ,  Tomoo Takahara ,  Hisao Nakashima

发明人： Masato Nishihara ,  Tomoo Takahara ,  Hisao Nakashima

IPC分类号： H04B10/06

CPC分类号： H04B10/614 ,  H04B10/61 ,  H04B10/613 ,  H04B10/6165

摘要： A delay device that provides a delay amount to at least one of the in-phase signal and the quadrature signal, and a delay control section that controls the delay amount provided by the delay device based on a quality of the signals when the in-phase signal and the quadrature signal, to the at least one of which the delay amount is provided, at the delay device are converted into digital signals by the analog-digital converter, and the digital signal processing is carried out at the processor are provided. Thereby, the signal quality of recovered data at a receiving end of a multi-level phase modulation communication system is improved.

摘要翻译： 一种向至少一个同相信号和正交信号提供延迟量的延迟装置，以及延迟控制部分，当延迟装置根据同相信号和正交信号中的信号质量， 信号和正交信号至延迟装置中提供的延迟量中的至少一个被模拟数字转换器转换成数字信号，并且在处理器处执行数字信号处理。 因此，提高了在多级相位调制通信系统的接收端的恢复数据的信号质量。

公开(公告)号：US20090142076A1

公开(公告)日：2009-06-04

申请号：US12285234

申请日：2008-09-30

申请人： Lei Li ,  Zhenning Tao ,  Hisao Nakashima

发明人： Lei Li ,  Zhenning Tao ,  Hisao Nakashima

IPC分类号： H04B10/06

CPC分类号： H04B10/6165 ,  H04B10/61 ,  H04B10/613

摘要： The present invention relates to a frequency offset compensating apparatus and method, and an optical coherent receiver. The optical coherent receiver includes a front end processor and a frequency offset estimator, of which said front end processor converts an inputted optical signal into a base band digital electric signal, and said frequency offset estimator estimates a phase offset change introduced by a frequency offset in said base band digital electric signal; said frequency offset compensating apparatus comprises an M output integrator, for integrating the phase offset change introduced by the frequency offset to acquire M inverse numbers of the phase offset introduced by the frequency offset, where M is an integer greater than 1; a series-parallel converting device, for dividing said base band digital electric signal into M sub base band digital electric signals; M complex multipliers, for constructing the corresponding inverse numbers in the M inverse numbers to be complex numbers, and multiplying them with the corresponding sub base band digital electric signals in the M sub base band digital electric signals; and a parallel-series converting device, for converting the M sub base band digital electric signals multiplied by said complex multipliers into a base band electric signal.

摘要翻译： 本发明涉及一种频偏补偿装置和方法以及光相干接收机。 所述光学相干接收机包括前端处理器和频率偏移估计器，其中所述前端处理器将输入的光信号转换为基带数字电信号，并且所述频偏估计器估计由频带偏移引入的相位偏移变化 表示基带数字电信号; 所述频率偏移补偿装置包括M输出积分器，用于对由频率偏移引入的相位偏移变化进行积分，以获得由频率偏移引入的相位偏移的M个数，其中M是大于1的整数; 串并联转换装置，用于将所述基带数字电信号分成M个子基带数字电信号; M个复数乘法器，用于将M个倒数中的对应的倒数构成为复数，并将其与M个子基带数字电信号中的对应的子基带数字电信号相乘; 以及并行串行转换装置，用于将乘以所述复数乘法器的M个子基带数字电信号转换成基带电信号。

公开(公告)号：US20090119043A1

公开(公告)日：2009-05-07

申请号：US12232179

申请日：2008-09-11

申请人： Zhenning Tao ,  Jun Tian ,  Huijian Zhang ,  Hisao Nakashima

发明人： Zhenning Tao ,  Jun Tian ,  Huijian Zhang ,  Hisao Nakashima

IPC分类号： G01R13/00

CPC分类号： H04L27/3863 ,  H04L27/3872

摘要： The present invention discloses a phase imbalance monitoring apparatus, an amplitude imbalance monitoring apparatus, as well as an apparatus incorporating the same. The phase imbalance monitoring apparatus is for use in an apparatus in which imbalance between an I branch signal and a Q branch signal in quadrature to each other is required to be monitored, and is characterized in comprising a preprocessing unit, for performing preprocessing on the I branch signal and the Q branch signal to extract essential information relevant to correlation of the signals; and a correlation unit, for performing correlation processing on the extracted essential information to learn of the phase imbalance between the I branch signal and the Q branch signal.

摘要翻译： 本发明公开了一种相位不平衡监视装置，振幅不平衡监视装置，以及包括该不平衡监视装置的装置。 相位不平衡监视装置用于需要监视I分支信号和彼此正交的Q分支信号之间的不平衡的装置，其特征在于包括预处理单元，用于对I进行预处理 分支信号和Q分支信号，以提取与信号相关性相关的基本信息; 以及相关单元，用于对所提取的基本信息执行相关处理，以了解I分支信号和Q分支信号之间的相位不平衡。

公开(公告)号：US4905060A

公开(公告)日：1990-02-27

申请号：US198198

申请日：1988-05-25

申请人： Naoki Chinone ,  Hisao Nakashima ,  Makoto Okai ,  Shinji Tsuji

发明人： Naoki Chinone ,  Hisao Nakashima ,  Makoto Okai ,  Shinji Tsuji

IPC分类号： H01L33/06 ,  H01L33/14 ,  H01L33/30 ,  H01L33/40 ,  H01L33/44 ,  H01S5/00 ,  H01S5/20 ,  H01S5/223 ,  H01S5/343

CPC分类号： H01L33/305 ,  B82Y20/00 ,  H01L33/06 ,  H01S5/20 ,  H01S5/223 ,  H01S5/343 ,  H01S5/34313 ,  H01S5/3434 ,  H01S5/2059 ,  H01S5/34306

摘要： A light emitting device has a multiple layer film structure such as a multiple quantum well (MQW) structure which is made of an indium system compound semiconductor not containing phosphorus, wherein part of a region or regions of the multiple film structure is (are) a disordered region or regions disordered by introduction of an inpurity.

公开(公告)号：US4503540A

公开(公告)日：1985-03-05

申请号：US368150

申请日：1982-04-14

申请人： Hisao Nakashima ,  Jun-ichi Umeda ,  Takao Kuroda ,  Takashi Kajimura ,  Hiroshi Matsuda

发明人： Hisao Nakashima ,  Jun-ichi Umeda ,  Takao Kuroda ,  Takashi Kajimura ,  Hiroshi Matsuda

IPC分类号： H01S5/00 ,  H01S5/042 ,  H01S5/22 ,  H01S5/227 ,  H01S5/40 ,  H01S3/19

CPC分类号： H01S5/2203 ,  H01S5/4043 ,  H01S5/0424 ,  H01S5/2275

摘要： A phase-locked semiconductor laser device comprising a laminated structure in which a plurality of first semiconductor layers having the substantially same composition are stacked in a manner to be sandwiched between second semiconductor layers having a band gap wider, and a refractive index lower, than those of said first semiconductor layers; a third semiconductor layer which is disposed in contact with at least one of side faces of said laminated structure parallel to a traveling direction of a laser beam, which is not narrower in the band gap and not higher in the refractive index than said first semiconductor layers and which does not have the same conductivity type as, at least, that of said first semiconductor layers; means to inject current into an interface between said first semiconductor layers and said third semiconductor layer disposed on the side face of said laminated structure; and means to act as an optical resonator for the laser beam.

摘要翻译： 一种锁相半导体激光器件，包括层叠结构，其中具有基本上相同组成的多个第一半导体层以夹在带隙较宽的第二半导体层和折射率较低的第二半导体层之间的方式堆叠 的所述第一半导体层; 第三半导体层，其与所述层叠结构的至少一个侧面平行设置成与激光束的行进方向平行，所述激光束的带隙不窄，折射率不高于所述第一半导体层 并且其不具有至少与所述第一半导体层的导电类型相同的导电类型; 用于将电流注入到所述第一半导体层和设置在所述层叠结构的侧面上的所述第三半导体层之间的界面中的装置; 以及用作激光束的光学谐振器的装置。

公开(公告)号：US4303688A

公开(公告)日：1981-12-01

申请号：US100436

申请日：1979-12-05

申请人： Naohiko Shimura ,  Takeo Shinada ,  Mituga Ikoma ,  Hisao Nakashima

发明人： Naohiko Shimura ,  Takeo Shinada ,  Mituga Ikoma ,  Hisao Nakashima

IPC分类号： A23L17/00 ,  A22C25/20 ,  A23L1/325

CPC分类号： A23L17/70

摘要： Fibrous boiled fish paste is produced by adding water to minced meat, mixing both with agitation, molding the mixture into a certain shape, subjecting it to setting, dividing it finely into the form of fibers or flat pieces extending in parallel and then heating the resulting finely divided product without separating each fiber or flat piece individually. The resulting boiled fish paste comprises an inner part coated with an outer surface forming a pellicle united to the inner part. The inner part is divided finely into the form of fibers or flat pieces in parallel to such a degree that each fiber or flat piece separates individually with ease in the mouth upon eating. This boiled fish paste is united in a body in appearance, but it loosens immediately in fiber-like manner in the mouth upon eating and it has an improved mouth feel.

摘要翻译： 通过向切碎的肉中加入水，混合搅拌，将混合物成型为一定形状，使其定型，将其细分成平行延伸的纤维或扁平片的形式，然后加热所得到的纤维煮熟的鱼浆 细分产品不分开每个纤维或平片。 所得到的煮熟的鱼酱包括涂覆有形成与内部结合的防护薄膜的外表面的内部部分。 内部部分被细分成纤维或扁平片的形式，平行于每个纤维或扁平片在进食时容易分开分开。 这种煮熟的鱼酱在外观上结合在一个身体中，但是在进食时立即以纤维状的方式松开，并且口感更好。

公开(公告)号：US08873973B2

公开(公告)日：2014-10-28

申请号：US13446177

申请日：2012-04-13

申请人： Kosuke Komaki ,  Hisao Nakashima

发明人： Kosuke Komaki ,  Hisao Nakashima

IPC分类号： H04B10/06 ,  H04B10/2569 ,  H04B10/2507 ,  H04B10/69

CPC分类号： H04B10/25073 ,  H04B10/2569 ,  H04B10/6971 ,  H04L7/0087 ,  H04L7/0335

摘要： A digital coherent receiver includes a sampling phase detector to detect a phase of a sampled digital signal, and a phase adjustor to adjust the sampling phase of the digital signal based upon the detected phase. The phase detector includes filters to equalize the digital signal with different equalization characteristics; sensitivity monitoring phase detectors, each connected to one of the filters and outputting a phase detection signal representing the phase of the output signal from the associated filter together with a sensitivity monitoring signal representing the sensitivity of the phase detection; sensitivity correction coefficient generators, each generating a sensitivity correction coefficient for correcting the associated phase detection signal using a square sum of the sensitivity monitoring signals; and an adder to add the phase detection signals that have been corrected by the sensitivity correction coefficients, and output a phase signal.

摘要翻译： 数字相干接收机包括：采样相位检测器，用于检测采样数字信号的相位;以及相位调节器，用于根据检测到的相位调整数字信号的采样相位。 相位检测器包括滤波器，以均衡具有不同均衡特性的数字信号; 灵敏度监视相位检测器，每个检测器连接到滤波器之一并输出表示来自相关滤波器的输出信号的相位的相位检测信号以及表示相位检测的灵敏度的灵敏度监视信号; 灵敏度校正系数发生器，每个灵敏度校正系数发生器使用平方和的灵敏度监视信号产生用于校正相关联的相位检测信号的灵敏度校正系数; 以及加法器，将通过灵敏度校正系数校正的相位检测信号相加，并输出相位信号。

公开(公告)号：US08762086B2

公开(公告)日：2014-06-24

申请号：US12232179

申请日：2008-09-11

申请人： Zhenning Tao ,  Jun Tian ,  Huijian Zhang ,  Hisao Nakashima

发明人： Zhenning Tao ,  Jun Tian ,  Huijian Zhang ,  Hisao Nakashima

IPC分类号： G01R13/00

CPC分类号： H04L27/3863 ,  H04L27/3872

摘要： The present invention discloses a phase imbalance monitoring apparatus, an amplitude imbalance monitoring apparatus, as well as an apparatus incorporating the same. The phase imbalance monitoring apparatus is for use in an apparatus in which imbalance between an I branch signal and a Q branch signal in quadrature to each other is required to be monitored, and is characterized in comprising a preprocessing unit, for performing preprocessing on the I branch signal and the Q branch signal to extract essential information relevant to correlation of the signals; and a correlation unit, for performing correlation processing on the extracted essential information to learn of the phase imbalance between the I branch signal and the Q branch signal.

摘要翻译： 本发明公开了一种相位不平衡监视装置，振幅不平衡监视装置，以及包括该不平衡监视装置的装置。 相位不平衡监视装置用于需要监视I分支信号和彼此正交的Q分支信号之间的不平衡的装置，其特征在于包括预处理单元，用于对I进行预处理 分支信号和Q分支信号，以提取与信号相关性相关的基本信息; 以及相关单元，用于对所提取的基本信息执行相关处理，以了解I分支信号和Q分支信号之间的相位不平衡。

公开(公告)号：US08693898B2

公开(公告)日：2014-04-08

申请号：US13317297

申请日：2011-10-14

申请人： Nobukazu Koizumi ,  Kazuhiko Hatae ,  Noriyasu Nakayama ,  Koji Nakamuta ,  Hisao Nakashima ,  Kosuke Komaki

发明人： Nobukazu Koizumi ,  Kazuhiko Hatae ,  Noriyasu Nakayama ,  Koji Nakamuta ,  Hisao Nakashima ,  Kosuke Komaki

IPC分类号： H04B10/06

CPC分类号： H04B10/613 ,  H04B10/614 ,  H04B10/616 ,  H04L25/03044 ,  H04L27/223

摘要： An adaptive equalizer includes a finite impulse response filter with a predetermined number of taps; and a tap coefficient adaptive controller having a register to hold tap coefficients for the filter, a weighted center calculator to calculate a weighted center of the tap coefficients, and a tap coefficient shifter to shift the tap coefficients based on a calculation result of the weighted center. During an initial training period, the tap coefficient shifter shifts the tap coefficients on a symbol data basis such that a difference between the calculated weighted center of the tap coefficients and a tap center defined by the number of taps is minimized.

摘要翻译： 自适应均衡器包括具有预定数量抽头的有限脉冲响应滤波器; 以及具有用于保持滤波器的抽头系数的寄存器的抽头系数自适应控制器，用于计算抽头系数的加权中心的加权中心计算器，以及基于加权中心的计算结果来移位抽头系数的抽头系数移位器 。 在初始训练期间，抽头系数移位器基于符号数据移动抽头系数，使得所计算的抽头系数的加权中心与由抽头数量定义的抽头中心之间的差最小化。

公开(公告)号：US08571407B2

公开(公告)日：2013-10-29

申请号：US12567245

申请日：2009-09-25

申请人： Lei Li ,  Zhenning Tao ,  Hisao Nakashima

发明人： Lei Li ,  Zhenning Tao ,  Hisao Nakashima

IPC分类号： H04B10/08 ,  H04B17/00

CPC分类号： H04B10/611 ,  H04B10/0795 ,  H04B10/60

摘要： The present invention relates to an optical coherent receiver and an apparatus for and a method of monitoring performance thereof. The apparatus for monitoring performance of the optical coherent receiver makes use of a first signal and a second signal from the optical coherent receiver to monitor performance of the optical coherent receiver, and comprises a first subtracter, for subtracting the second signal from the first signal to obtain a first subtraction result; a squarer, for obtaining a square of the first subtraction result; a delayer, for delaying the first subtraction result; a multiplier, for multiplying the first subtraction result with the delayed first subtraction result; and a second subtracter, for subtracting the result of the multiplier from the result of the squarer.

摘要翻译： 本发明涉及一种光学相干接收机及其监视性能的装置和方法。 用于监视光学相干接收机的性能的装置利用来自光学相干接收机的第一信号和第二信号来监测光学相干接收机的性能，并且包括第一减法器，用于从第一信号减去第二信号 获得第一个减法结果; 平方，用于获得第一减法结果的平方; 延迟器，用于延迟第一减法结果; 乘法器，用于将第一减法结果与延迟的第一减法结果相乘; 和第二减法器，用于从平方器的结果中减去乘数的结果。