专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明授权

US08634727B2 Coherent optical receiver, apparatus and method for detecting interchannel skew in coherent optical receiver 有权
标题翻译：相干光接收机，用于检测相干光接收机中的信道间偏斜的装置和方法
公开(公告)号：US08634727B2
公开(公告)日：2014-01-21
申请号：US13696516
申请日：2011-05-13
申请人： Wakako Yasuda , Junichi Abe , Kiyoshi Fukuchi
发明人： Wakako Yasuda , Junichi Abe , Kiyoshi Fukuchi
IPC分类号： H04B10/06
CPC分类号： H04B10/616 , H04B10/6151 , H04J14/02 , H04J14/06
摘要： In a coherent optical receiver, sufficient demodulation becomes impossible and consequently receiving performance deteriorates if an interchannel skew arises, therefore, a coherent optical receiver according to an exemplary aspect of the invention includes a local light source; a 90-degree hybrid circuit; an optoelectronic converter; an analog-to-digital converter; and a digital signal processing unit, wherein the 90-degree hybrid circuit makes multiplexed signal light interfere with local light from the local light source, and outputs a plurality of optical signals separated into a plurality of signal components; the optoelectronic converter detects the optical signals and outputs detected electrical signals; the analog-to-digital converter quantizes the detected electrical signals and outputs quantized signals; and the digital signal processing unit includes a skew compensation unit for compensating a difference in propagation delay between the plurality of signal components, and a demodulation unit for demodulating the quantized signals.
摘要翻译：在相干光接收机中，如果出现通道间偏斜，则不能进行足够的解调，因此接收性能恶化，因此根据本发明的示例性方面的相干光接收机包括本地光源; 90度混合电路; 光电转换器; 一个模拟 - 数字转换器; 以及数字信号处理单元，其中所述90度混合电路使多路复用信号光干扰来自所述本地光源的局部光，并且输出分离成多个信号分量的多个光信号; 光电转换器检测光信号并输出检测到的电信号; 模数转换器对检测到的电信号进行量化并输出量化信号; 并且数字信号处理单元包括用于补偿多个信号分量之间的传播延迟差的偏斜补偿单元和用于解调量化信号的解调单元。

22. 发明授权

US08626000B2 Coherent optical receiver, apparatus and method for detecting inter-channel skew in coherent optical receiver 有权
标题翻译：相干光接收机，用于检测相干光接收机中的信道间偏斜的装置和方法
公开(公告)号：US08626000B2
公开(公告)日：2014-01-07
申请号：US13505199
申请日：2011-09-02
申请人： Junichi Abe , Wakako Yasuda , Kiyoshi Fukuchi
发明人： Junichi Abe , Wakako Yasuda , Kiyoshi Fukuchi
IPC分类号： H04B10/00 , H04B10/61
CPC分类号： H04B10/616 , H04B10/0775 , H04B10/6164 , H04B10/6165
摘要： In a coherent optical receiver, sufficient demodulation becomes impossible and consequently receiving performance deteriorates if an inter-channel skew arises, therefore, a coherent optical receiver according to an exemplary aspect of the invention includes a local light source, a 90° hybrid circuit, an optoelectronic converter, an analog to digital converter, and a digital signal processing unit; wherein the 90° hybrid circuit makes multiplexed signal light interfere with local light from the local light source, and outputs a plurality of optical signals separated into a plurality of signal components; the optoelectronic converter detects the optical signals and outputs detected electrical signals; the analog to digital converter quantizes the detected electrical signals and outputs quantized signals; the digital signal processing unit includes a skew compensation unit for compensating a difference in propagation delay between the plurality of signal components, and an FFT operation unit for performing a fast Fourier transform process on the quantized signals; and wherein the difference in propagation delay is calculated on the basis of a plurality of peak values with a central focus on one peak value in the results of performing the fast Fourier transform process.
摘要翻译：在相干光接收机中，如果发生信道间偏斜，则不可能进行足够的解调，因此接收性能恶化，因此，根据本发明的示例性方面的相干光接收机包括本地光源，90°混合电路，光电转换器，模数转换器和数字信号处理单元; 其中所述90°混合电路使多路复用信号光干扰来自所述本地光源的局部光，并且输出分离成多个信号分量的多个光信号; 光电转换器检测光信号并输出检测到的电信号; 模数转换器对检测到的电信号进行量化并输出量化信号; 数字信号处理单元包括用于补偿多个信号分量之间的传播延迟差的偏斜补偿单元和用于对量化信号执行快速傅里叶变换处理的FFT运算单元; 并且其中基于执行快速傅里叶变换处理的结果中的中心聚焦于一个峰值的多个峰值来计算传播延迟的差异。

23. 发明授权

US08346099B2 Optical reception device and optical reception method 有权
标题翻译：光接收装置和光接收方法
公开(公告)号：US08346099B2
公开(公告)日：2013-01-01
申请号：US12518348
申请日：2007-11-29
申请人： Satomi Shioiri , Kiyoshi Fukuchi
发明人： Satomi Shioiri , Kiyoshi Fukuchi
IPC分类号： H04B10/148
CPC分类号： H04B10/69 , H04B10/677 , H04L27/223
摘要： The present invention converts each of the optical differential signals from DPSK demodulator from an optical signal into an electrical signal by using optical-electrical signal converters. Thereafter, each electrical signal is subjected to amplification adjustment at an appropriate amplification factor by variable amplifier, and an appropriate delay amount is added to each electrical signal by variable delay line, and thereafter data discrimination is performed by discriminator. Since two differential signals after DPSK demodulation are subjected to amplitude and delay adjustments, the need for optical parts is obviated enabling the use of electric circuits which can be integrated. Thus, the cost of the optical reception device will be reduced. Moreover, the since electric signals whose phases and amplitudes are equalized are inputted to discriminator, erroneous determination of data at discriminator will be reduced.
摘要翻译：本发明通过使用光电信号转换器将来自DPSK解调器的每个光差分信号从光信号转换成电信号。此后，通过可变放大器以适当的放大系数对每个电信号进行放大调整，并通过可变延迟线将适当的延迟量加到每个电信号上，然后通过鉴别器进行数据鉴别。由于在DPSK解调之后的两个差分信号进行振幅和延迟调整，因此无需使用可以集成的电路。因此，光接收装置的成本将降低。此外，由于相位和幅度均衡的电信号被输入到鉴别器，因此鉴别器上的数据的错误确定将被减少。

24. 发明申请

US20120082464A1 COHERENT OPTICAL RECEIVING APPARATUS, COHERENT OPTICAL COMMUNICATIONS SYSTEM EMPLOYING SAME, AND COHERENT OPTICAL COMMUNICATIONS METHOD 审中-公开
标题翻译：相关光接收装置，使用相同的光通信系统和相关的光通信方法
公开(公告)号：US20120082464A1
公开(公告)日：2012-04-05
申请号：US13377878
申请日：2010-12-24
申请人： Wakako Yasuda , Kiyoshi Fukuchi , Daisaku Ogasahara
发明人： Wakako Yasuda , Kiyoshi Fukuchi , Daisaku Ogasahara
IPC分类号： H04B10/00 , H04B10/06
CPC分类号： H04B10/6166 , H04B10/0799 , H04B10/611 , H04B10/614
摘要： With respect to a coherent optical receiving apparatus, a polarization multiplexing light signal, whereupon a first signal is placed upon a first polarized wave light and a second signal is placed upon a second polarized wave light, is polarization divided upon the transmitting side thereof, and the first signal and the second signal cannot be received in correspondence with the transmitting side. Accordingly, disclosed is a coherent optical receiving apparatus, comprising a coherent light receiving unit that detects coherent light, and a signal processing unit that carries out signal processing that is set with control coefficients. The coherent light receiving unit receives a first polarized light that is modulated with a first transmitted signal and outputs a first detected signal, and simultaneously receives the first polarized light with a second polarized light that is modulated with a second transmitted signal, and outputs a second detected signal. The signal processing unit establishes a first control coefficient on the basis of the first detected signal, and establishes a second control coefficient on the basis of the first control coefficient and the second detected signal, and employs the second control coefficient to output a first received signal corresponding to the first transmitted signal, and a second received signal corresponding to the second transmitted signal.
摘要翻译：对于相干光接收装置，偏振复用光信号，第一信号被放置在第一偏振光上，第二信号被放置在第二偏振光上，在其发射侧被极化分割，并且第一信号和第二信号不能与发送侧对应地被接收。因此，公开了一种相干光接收装置，包括检测相干光的相干光接收单元和执行用控制系数设置的信号处理的信号处理单元。相干光接收单元接收利用第一发送信号进行了调制的第一偏振光并输出第一检测信号，同时以第二发送信号调制的第二偏振光接收第一偏振光，并输出第二偏振光检测信号。信号处理单元基于第一检测信号建立第一控制系数，并且基于第一控制系数和第二检测信号建立第二控制系数，并且采用第二控制系数来输出第一接收信号对应于第一发送信号，以及对应于第二发送信号的第二接收信号。

25. 发明授权

US07949260B2 Evaluation and adjustment method of optical receiver and optical communication system 有权
标题翻译：光接收机和光通信系统的评估与调整方法
公开(公告)号：US07949260B2
公开(公告)日：2011-05-24
申请号：US11878207
申请日：2007-07-23
申请人： Kiyoshi Fukuchi
发明人： Kiyoshi Fukuchi
IPC分类号： H04B10/06
CPC分类号： H04B10/677
摘要： An evaluation method of an optical receiver of an optical communication system, including a DPSK (Differential Phase Shift Keying) signal modulated by a specific data series, a delay interferometer for performing delay detection on the DPSK signal, an optical receiver for receiving each of two optical outputs of the delay interferometer and outputting a difference signal, and a spectrum analyzer for measuring a spectrum of an output electrical signal of the optical receiver, comprising monitoring a specific frequency component of the spectrum analyzer and detecting a delay difference and a deviation in optical reception level between the two outputs of the delay interferometer and the optical receiver.
摘要翻译：一种光通信系统的光接收机的评估方法，包括由特定数据序列调制的DPSK（差分相移键控）信号，用于对DPSK信号进行延迟检测的延迟干涉仪，用于接收两个延迟干涉仪的光输出并输出差分信号;以及频谱分析器，用于测量光接收机的输出电信号的频谱，包括监视频谱分析仪的特定频率分量并检测延迟差和光学偏差延迟干涉仪和光接收机的两个输出之间的接收电平。

26. 发明申请

US20090290876A1 Light Receiver, Optical Communication System and Method 有权
标题翻译：光接收机，光通信系统及方法
公开(公告)号：US20090290876A1
公开(公告)日：2009-11-26
申请号：US11992398
申请日：2006-10-04
申请人： Kiyoshi Fukuchi , Toshiharu Ito
发明人： Kiyoshi Fukuchi , Toshiharu Ito
IPC分类号： H04J14/02
CPC分类号： H04B10/66
摘要： A receiver includes wavelength demultiplexer for demultiplexing a received WDM light into light signals at respective central frequencies thereof, delay interferometer for converting a light signal output from wavelength demultiplexer into an intensity signal, and light detector for converting an output signal from delay interferometer into an electric signal. The interval between interferential frequencies of delay interferometer is 2/(2n+1) times the interval between the central frequencies of the WDM light. Logic inverting circuit outputs the output signal from the light detector while non-inverting or inverting the logic level thereof depending on the received central frequency.
摘要翻译：接收机包括用于将接收到的WDM光分解为其各自中心频率的光信号的波长解复用器，用于将从波长解复用器输出的光信号转换为强度信号的延迟干涉仪，以及用于将来自延迟干涉仪的输出信号转换为电信号。延迟干涉仪的干涉频率之间的间隔是WDM光中心频率间隔的2 /（2n + 1）倍。逻辑反相电路根据接收到的中心频率，在反相或反相逻辑电平的同时，输出来自光检测器的输出信号。

27. 发明申请

US20050152460A1 Transmitting/receiving system, receiver and transmitter with crosstalk suppressing function 审中-公开
标题翻译：具有串扰抑制功能的发射/接收系统，接收机和发射机
公开(公告)号：US20050152460A1
公开(公告)日：2005-07-14
申请号：US11029931
申请日：2005-01-05
申请人： Hideo Yoshimi , Kiyoshi Fukuchi
发明人： Hideo Yoshimi , Kiyoshi Fukuchi
IPC分类号： H04J13/00 , H04B1/7107 , H04B3/32 , H04B1/69
CPC分类号： H04B3/32
摘要： From a transmitter to a transmission line, a baseband signal is transmitted together with a replica signal created by superposing the baseband signal onto Carrier Frequency C1. Similarly, from a transmitter to a transmission line, a baseband signal is transmitted together with a replica signal created by superposing the baseband signal onto Carrier Frequency C2. At a receiver, the receive signal is branched into two. From one of the branched signals, the baseband signal is extracted by passing the signal through a filter. From the remaining signal, the replica signal on Carrier Frequency C2 is converted into the baseband, which is also extracted. The resultant signals are input to an adaptive equalizer. The output signal from the adaptive equalizer now has the same waveform as the crosstalk signal that has crossed into the baseband signal. The crosstalk can be suppressed by subtracting these two signals from each other by use of a subtracter.
摘要翻译：从发射机到传输线，基带信号与通过将基带信号叠加到载波频率C 1上创建的复制信号一起发送。类似地，从发射机到传输线，基带信号与副本信号一起发送通过将基带信号叠加到载波频率C 2上创建。在接收机处，接收信号被分支为两个。从分支信号之一，通过使信号通过滤波器来提取基带信号。从剩余的信号中，载波频率C 2上的复制信号被转换成也被提取的基带。所得到的信号被输入到自适应均衡器。来自自适应均衡器的输出信号现在具有与已经越过基带信号的串扰信号相同的波形。可以通过使用减法器从彼此减去这两个信号来抑制串扰。

28. 发明授权

US5309628A Assembling position adjusting mechanism of a spindle motor for a magnetic disk apparatus 失效
标题翻译：用于磁盘装置的主轴电机的组装位置调整机构
公开(公告)号：US5309628A
公开(公告)日：1994-05-10
申请号：US992134
申请日：1992-12-17
申请人： Kiyoshi Fukuchi , Yoshiaki Sakai , Hiroshi Tsuyuguchi , Takashi Numata , Fumio Nagase
发明人： Kiyoshi Fukuchi , Yoshiaki Sakai , Hiroshi Tsuyuguchi , Takashi Numata , Fumio Nagase
IPC分类号： G11B25/04 , G11B5/55 , G11B33/12 , B23P19/04
CPC分类号： G11B5/5521 , Y10S29/028 , Y10T29/49025 , Y10T29/53165 , Y10T29/53261 , Y10T29/53265
摘要： An assembling position-adjusting mechanism of a magnetic disk apparatus able to adjust the azimuth, radial alignment, and index of a magnetic head by adjusting a position thereof during the assembling process of a spindle motor. A positioning head movable in a direction perpendicular to a top surface of a table is provided. A plurality of positioning pins are provided on the bottom of the positioning head. Moving mechanisms are provided in the positioning head so that the bottom surface of the positioning head is movable and rotatable parallel to the top surface of the table. Each positioning pin of the positioning head is inserted into a respective positioning hole of a motor assembly so as to move the motor assembly with a movement of the positioning head so that the spindle motor of the motor assembly is at an appropriate position relative to the magnetic head of the main body of the magnetic disk apparatus.
摘要翻译：一种磁盘装置的组装位置调节机构，其能够通过在主轴电动机的组装过程中调节其位置来调节磁头的方位角，径向取向和折射率。提供了可在与桌子的顶面垂直的方向上移动的定位头。多个定位销设置在定位头的底部。移动机构设置在定位头中，使得定位头的底面能够平行于工作台的顶面移动和旋转。定位头的每个定位销插入到马达组件的相应定位孔中，以便随着定位头的运动而使马达组件移动，使得马达组件的主轴马达相对于磁铁位于适当的位置磁盘装置的主体的头部。

29. 发明授权

US4140334A Suspension apparatus for a vehicle 失效
标题翻译：车辆悬挂装置
公开(公告)号：US4140334A
公开(公告)日：1979-02-20
申请号：US839739
申请日：1977-10-05
申请人： Hideo Takeda , Kiyoshi Fukuchi
发明人： Hideo Takeda , Kiyoshi Fukuchi
IPC分类号： B60G7/02 , B60G21/05 , B60G21/055 , B60G11/36
CPC分类号： B60G21/055 , B60G21/051 , B60G7/02
摘要： A suspension apparatus for a vehicle having left and right wheels and comprising a pair of left and right trailing arms connected to a respective wheel, and a pair of laterally extending left and right rotary shafts connected to respective arms. The outer ends of the shafts are supported in bearings on the vehicle to permit individual rotation of the shafts and corresponding rocking of the arms and a tubular coupling interconnects the rotary shafts at the inner ends thereof also to permit individual rotation of the shafts. The suspension apparatus can be of semi-trailing type in which case the rotary shafts have bends therein and their inner ends rotate in the coupling about axes which are inclined with respect to the axes of rotation of the shafts in the bearings.
摘要翻译：一种用于车辆的悬挂装置，其具有左右轮，并且包括连接到相应车轮的一对左右拖臂和连接到相应臂的一对横向延伸的左右旋转轴。轴的外端被支撑在车辆上的轴承中，以允许轴的单独旋转和臂的相应摇摆，并且管状连接件在其内端处将旋转轴互连，以允许轴的单独旋转。悬挂装置可以是半拖式，在这种情况下，旋转轴在其中具有弯曲，并且其内端在联接器中围绕相对于轴承中的轴的旋转轴线倾斜的轴线旋转。

30. 发明授权

US09686019B2 Coherent optical receiver, device and method for detecting inter-lane skew in coherent optical receiver 有权
公开(公告)号：US09686019B2
公开(公告)日：2017-06-20
申请号：US13995279
申请日：2011-12-16
申请人： Kiyoshi Fukuchi , Junichi Abe , Wakako Yasuda
发明人： Kiyoshi Fukuchi , Junichi Abe , Wakako Yasuda
IPC分类号： H04B10/61
CPC分类号： H04B10/616
摘要： The disclosed coherent optical receiver includes a local light source; a 90-degree hybrid circuit; an optoelectronic converter; an analog-to-digital converter; a skew addition unit; and a FFT operation unit. The 90-degree hybrid circuit makes multiplexed signal light interfere with local light from the local light source, and outputs multiple optical signals separated into a plurality of signal components. The optoelectronic converter detects the optical signal and outputs a detected electrical signal. The analog-to-digital converter digitizes the detected electrical signal and outputs a detected digital signal. The skew addition unit adds to the detected digital signal an additional skew amount whose absolute value is equal to, whose sign is opposite to a skew amount of a difference in propagation delay in each lane connected to each output channel of the 90-degree hybrid circuit. The FFT operation unit performs a fast Fourier transform on the output from the skew addition unit.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式