Optical communications system
    1.
    发明授权

    公开(公告)号:US06414770B2

    公开(公告)日:2002-07-02

    申请号:US09779624

    申请日:2001-02-09

    IPC分类号: H04J1902

    CPC分类号: H04J14/0221

    摘要: When a branching unit combines a first optical signal transmitted from a branch station with a second optical signal which is different in power level from the first optical signal and is transmitted from a terminal station A or B in an optical add-drop system, the S/N ratio of the lower power level of the two different power levels decreases, thereby deteriorating the system performance. Therefore, a dummy light is transmitted together with an optical signal to adjust the power level of the optical signal. Otherwise, an optical attenuator or an active optical signal level adjustment unit is provided for the branching unit so that both optical signals to be combined can be equal in level.

    Apparatus and method for designing semiconductor device, and semiconductor device
    3.
    发明授权
    Apparatus and method for designing semiconductor device, and semiconductor device 有权
    用于设计半导体器件的设备和方法以及半导体器件

    公开(公告)号:US08887015B2

    公开(公告)日:2014-11-11

    申请号:US13544491

    申请日:2012-07-09

    IPC分类号: G01R31/28 G06F17/50

    CPC分类号: G06F17/505 G06F2217/14

    摘要: An arithmetic processor executes analysis processing for analyzing a probability that an output value of the scan flip-flop circuit after the capturing operation becomes a given logical state, and scan chain structure processing for structuring a scan chain for a plurality of scan flip-flop circuits having the same degree of probability that the output value after the capturing operation becomes the given logical state, on the basis of a result of the analyzing processing. The scan chain lower in a transition probability during the scan operation is formed so that a power consumption during a scan test can be reduced.

    摘要翻译: 算术处理器执行分析处理,用于分析在捕获操作之后扫描触发器电路的输出值变为给定逻辑状态的概率,以及用于构成用于多个扫描触发器电路的扫描链的扫描链结构处理 基于分析处理的结果,具有与拍摄操作之后的输出值成为给定逻辑状态的概率相同的程度。 在扫描操作期间以转换概率降低的扫描链形成为可以减少扫描测试期间的功耗。

    Spline hub for damper disk assembly
    4.
    发明授权
    Spline hub for damper disk assembly 失效
    花键轮毂用于阻尼盘组件

    公开(公告)号:US5975271A

    公开(公告)日:1999-11-02

    申请号:US151814

    申请日:1998-09-14

    申请人: Hiroyuki Iwata

    发明人: Hiroyuki Iwata

    摘要: A spline hub 1 is a component of a clutch disk assembly 30, which transmits torque between a flywheel 31 and an input shaft 32 of a transmission. The spline hub 1 is produced without being plated, while maintaining the resistance to wear and the accuracy of the dimension of the spline hub 1. The spline hub 1 includes a flange portion 3 and a boss portion 2. The flange portion 3 is coupled to a plate 7 of the clutch disk assembly 30, through which torque is transmitted from the flywheel 31. The boss portion 2 is fixedly coupled to the inner peripheral end of the flange portion 3. Spline grooves 20 are formed on the inner peripheral surface of the boss portion 2. The boss portion 2 is spline-engaged with an input shaft 32 of the transmission. Hardened layers 20a are partially formed on the surface of the spline grooves 20. In one embodiment, the bore of the spline hub 1 has ring-shaped hardened layers 20a intersecting the spline grooves 20. The ring-shaped hardened layers 20a are axially separated from each other. In another embodiment only selected spots of the spline grooves 20 have hardened layers 20b.

    摘要翻译: 花键轮毂1是离合器盘组件30的部件,其在变速器31的飞轮31和输入轴32之间传递扭矩。 在没有电镀的情况下制作花键轮毂1,同时保持耐磨性和花键轮毂1的尺寸精度。花键轮毂1包括凸缘部分3和凸台部分2.凸缘部分3联接到 离合器盘组件30的板7,通过该板7从飞轮31传递扭矩。凸台部分2固定地联接到凸缘部分3的内周端。花键槽20形成在 凸台部分2与变速器的输入轴32花键接合。 硬化层20a部分地形成在花键槽20的表面上。在一个实施例中,花键轮毂1的孔具有与花键槽20相交的环形硬化层20a。环形硬化层20a沿轴向分离 彼此。 在另一个实施例中,花键槽20的所选点仅具有硬化层20b。

    Seal structure and separate plate
    5.
    发明授权
    Seal structure and separate plate 失效
    密封结构和分隔板

    公开(公告)号:US5947482A

    公开(公告)日:1999-09-07

    申请号:US783836

    申请日:1997-01-13

    申请人: Hiroyuki Iwata

    发明人: Hiroyuki Iwata

    CPC分类号: F16H61/0009 F16J15/122

    摘要: To improve a sealing function in a seal structure for sealing a passage formed between two members, seal portions 3 seals a passage 9 formed between a valve body 8 and a plate body 2 of a separate plate 1. The seal portions 3 is formed to have a constant width on the plate body 2 of the separate plate 1 corresponding to a shape of an end face portions 8a of the valve body 8.

    摘要翻译: 为了改善用于密封形成在两个构件之间的通道的密封结构中的密封功能,密封部分3密封形成在阀体8和分离板1的板体2之间的通道9.密封部分3形成为具有 分离板1的板体2上的固定宽度对应于阀体8的端面部分8a的形状。

    Optical communications system
    6.
    发明授权

    公开(公告)号:US06233076B1

    公开(公告)日:2001-05-15

    申请号:US08923934

    申请日:1997-09-05

    IPC分类号: H04J1402

    CPC分类号: H04J14/0221

    摘要: When a branching unit combines a first optical signal transmitted from a branch station with a second optical signal which is different in power level from the first optical signal and is transmitted from a terminal station A or B in an optical add-drop system, the S/N ratio of the lower power level of the two different power levels decreases, thereby deteriorating the system performance. Therefore, a dummy light is transmitted together with an optical signal to adjust the power level of the optical signal. Otherwise, an optical attenuator or an active optical signal level adjustment unit is provided for the branching unit so that both optical signals to be combined can be equal in level.

    Signal light outputting apparatus and optical transmission system having signal light outputting apparatus
    7.
    发明授权
    Signal light outputting apparatus and optical transmission system having signal light outputting apparatus 失效
    信号光输出装置和具有信号光输出装置的光传输系统

    公开(公告)号:US06204945B1

    公开(公告)日:2001-03-20

    申请号:US08834211

    申请日:1997-04-15

    IPC分类号: H04J1402

    摘要: The invention provides a signal light outputting apparatus for use for optical communication by wavelength multiplex transmission and an optical transmission system with the same wherein control of powers and/or wavelengths of signal lights to be transmitted can be performed with certainty and the signal lights can be transmitted and received accurately while making transmission characteristics of the signal lights equal to each other. The signal light outputting apparatus includes a plurality of signal light outputting units each including a signal light source and an optical amplifier, an optical combiner for combining signal lights outputted from the signal light outputting units, a signal light power detector for extracting part of signal light combined by the optical combiner to detect powers of the signal light for individual wavelengths corresponding to the signal light wavelengths, and a signal light output control element for controlling signal light outputs of the corresponding optical amplifiers for amplification of the signal lights of the wavelengths in response to the powers of the signal lights of the individual wavelengths detected by the signal light power detector.

    摘要翻译: 本发明提供了一种用于通过波长多路复用传输进行光通信的信号光输出装置和具有该信号光传输系统的光传输系统,其中可以确定地执行要传输的信号光的功率和/或波长的控制,并且信号灯可以 同时使信号光的传输特性彼此相等,发送和接收精确。 信号光输出装置包括多个信号光输出单元,每个信号光输出单元包括信号光源和光放大器,用于组合从信号光输出单元输出的信号光的光组合器,用于提取信号光的一部分的信号光功率检测器 通过光组合器组合以检测对应于信号光波长的各个波长的信号光的功率;以及信号光输出控制元件,用于控制相应的光放大器的信号光输出,以响应波长的信号光的放大 对于由信号光功率检测器检测的各个波长的信号光的功率。

    Light branching and insertion apparatus and optical transmission system
having light branching and insertion apparatus
    8.
    发明授权
    Light branching and insertion apparatus and optical transmission system having light branching and insertion apparatus 失效
    光分支插入装置和具有光分支和插入装置的光传输系统

    公开(公告)号:US5956167A

    公开(公告)日:1999-09-21

    申请号:US800748

    申请日:1997-02-14

    摘要: The invention provides a light branching and insertion apparatus wherein branching and insertion of signal light can be effected accurately with a low loss and with a high degree of accuracy by optical transmission lines of a simple construction. The apparatus includes a first branching element for outputting signal light of a first wavelength from within signal light inputted from a first optical fiber to a third optical fiber and outputting signal light of the other wavelengths to a fourth optical fiber, a first insertion element for outputting signal light inputted from a fifth optical fiber to a second optical fiber, a second branching element for outputting signal light of a second wavelength from within signal light inputted from a sixth optical fiber to an eighth optical fiber and outputting signal light of the other wavelengths to a ninth optical fiber, a second insertion element for outputting signal light inputted from a tenth optical fiber to a seventh optical fiber, a third branching element for outputting signal light of a third wavelength from within signal light inputted from an eleventh optical fiber to the fifth optical fiber and outputting signal light of the other wavelengths to the tenth optical fiber, and a third insertion element for outputting signal light inputted from the ninth optical fiber to a twelfth optical fiber.

    摘要翻译: 本发明提供了一种光分支和插入装置,其中可以通过简单结构的光传输线以低损耗和高精确度精确地实现信号光的分支和插入。 该装置包括:第一分支单元,用于从第一光纤输入的信号光中输出第一波长的信号光,并输出到第三光纤,并将其它波长的信号光输出到第四光纤;第一插入元件,用于输出 从第五光纤输入到第二光纤的信号光;第二分支元件,用于从第六光纤输入的信号光中输出第二波长的信号光,并将其它波长的信号光输出到 第九光纤,用于将从第十光纤输入的信号光输出到第七光纤的第二插入元件,从第十一光纤输入的信号光中输出第三波长的信号光的第三分支元件, 并将其他波长的信号光输出到第十根光纤,以及a 第三插入元件,用于将从第九光纤输入的信号光输出到第十二光纤。

    Polarization compensator and wavelength division multiplexing apparatus using same
    9.
    发明授权
    Polarization compensator and wavelength division multiplexing apparatus using same 失效
    偏振补偿器和使用它的波分复用装置

    公开(公告)号:US06762837B2

    公开(公告)日:2004-07-13

    申请号:US09983186

    申请日:2001-10-23

    申请人: Hiroyuki Iwata

    发明人: Hiroyuki Iwata

    IPC分类号: G01J400

    摘要: In a polarization compensator for converting a polarization state of a lightwave, and a wavelength division multiplexing apparatus using same, a controller of the polarization compensator controls a rotator to orient a polarization plane of an input lightwave to a polarization plane of a reference polarizer. Also, the controller receives an output lightwave from the polarization compensator, of the above-mentioned present invention, which inputs the input lightwave through the rotator and a first ¼ wave plate, through a second ¼ wave plate and a polarizer having the polarization plane set in the reference direction, and the input lightwave is compensated to a linear polarization having the polarization plane of the reference direction based on a received polarization signal. Furthermore, a plurality of polarization compensators and a coupler are connected directly or with a connector so as to prevent the polarization planes of the lightwaves whose wavelengths are adjoining from coinciding with each other, and preferably the polarization compensators and the coupler are connected directly or with connectors so that the polarization planes are orthogonal.

    摘要翻译: 在用于转换光波的偏振态的偏振补偿器和使用它的波分复用装置中,偏振补偿器的控制器控制旋转器将输入光波的偏振面定向到参考偏振器的偏振面。 此外,控制器接收来自偏振补偿器的输出光波,上述本发明通过旋转器和第一1/4波片通过第二1/4波片和具有偏振面集合的偏振器输入输入光波 并且基于所接收的偏振信号将输入光波补偿为具有基准方向的偏振面的线偏振。 此外,多个极化补偿器和耦合器直接或与连接器连接,以防止其波长相邻的光波的偏振面彼此重合,并且优选地,极化补偿器和耦合器直接连接或与 连接器,使得偏振面正交。

    Optical communications system
    10.
    发明授权
    Optical communications system 有权
    光通信系统

    公开(公告)号:US06721507B2

    公开(公告)日:2004-04-13

    申请号:US10134432

    申请日:2002-04-30

    IPC分类号: H04J1402

    CPC分类号: H04J14/0221

    摘要: When a branching unit combines a first optical signal transmitted from a branch station with a second optical signal which is different in power level from the first optical signal and is transmitted from a terminal station A or B in an optical add-drop system, the S/N ratio of the lower power level of the two different power levels decreases, thereby deteriorating the system performance. Therefore, a dummy light is transmitted together with an optical signal to adjust the power level of the optical signal. Otherwise, an optical attenuator or an active optical signal level adjustment unit is provided for the branching unit so that both optical signals to be combined can be equal in level.

    摘要翻译: 当分支单元将从分支站发送的第一光信号与功率电平不同于第一光信号的第二光信号组合并且在光分插系统中从终端站A或B发送时,S 两个不同功率电平的较低功率电平的/ N比降低,从而降低系统性能。 因此,虚拟光与光信号一起传输,以调整光信号的功率电平。 否则,为分路单元提供光衰减器或有源光信号电平调整单元,使得待组合的两个光信号的电平可以相等。