Optical receiving apparatus and digital receiving circuit
    52.
    发明授权
    Optical receiving apparatus and digital receiving circuit 有权
    光接收装置和数字接收电路

    公开(公告)号:US08744276B2

    公开(公告)日:2014-06-03

    申请号:US12408176

    申请日:2009-03-20

    IPC分类号: H04B10/00

    摘要: An optical receiving apparatus includes a combining unit that combines signal light and reference light; a optoelectric converting unit that converts, into electrical signals, two or more optical signals that enable reconstruction of a complex electric field signal of the signal light obtained by the combining unit; and a sampling clock generating unit that generates a sampling clock that has a frequency preset based on a symbol rate of the signal light and is asynchronous with the signal light. The optical receiving apparatus further includes a digital converting unit that samples at the frequency of the sampling clock signal, an electrical signal obtained by the optoelectric converting unit and converts the electrical signal into a digital signal; and a digital signal processing unit that demodulates a received signal based on a complex digital signal obtained from the digital signal obtained by the digital converting unit.

    摘要翻译: 光接收装置包括组合信号光和参考光的组合单元; 光电转换单元,其将电信号转换成能够重构由组合单元获得的信号光的复电场信号的两个或更多个光信号; 以及采样时钟产生单元,其生成具有基于信号光的符号率预设的频率并且与信号光异步的采样时钟。 光接收装置还包括数字转换单元,以采样时钟信号的频率采样,由光电转换单元获得的电信号,并将该电信号转换为数字信号; 以及数字信号处理单元,其基于从由数字转换单元获得的数字信号获得的复数数字信号来解调接收信号。

    Input/output efficiency for online analysis processing in a relational database
    53.
    发明授权
    Input/output efficiency for online analysis processing in a relational database 失效
    关系数据库中在线分析处理的输入/输出效率

    公开(公告)号:US08719312B2

    公开(公告)日:2014-05-06

    申请号:US13430897

    申请日:2012-03-27

    IPC分类号: G06F7/00 G06F17/30

    CPC分类号: G06F17/30315 G06F17/30592

    摘要: Embodiments of the invention relate to improved input/output efficiency for online analysis processing in a relational database. An aspect of the invention includes selecting a table from a relational database. The table is split by column into sub-tables, with at least one of the sub-tables including at least two columns. Each sub-table is written into a corresponding table of a row-based storage database.

    摘要翻译: 本发明的实施例涉及改进关系数据库中在线分析处理的输入/输出效率。 本发明的一个方面包括从关系数据库中选择一个表。 该表按列划分为子表,其中至少一个子表至少包括两列。 每个子表都写入基于行的存储数据库的相应表。

    Methods for determining a remaining useful life of an air filter
    54.
    发明授权
    Methods for determining a remaining useful life of an air filter 有权
    用于确定空气过滤器的剩余使用寿命的方法

    公开(公告)号:US08626456B2

    公开(公告)日:2014-01-07

    申请号:US12729697

    申请日:2010-03-23

    CPC分类号: F02D41/18 F02D41/22 F02M35/02

    摘要: A method is provided herein for determining a remaining useful life of an air filter. The method includes, but is not limited to, measuring a first airflow rate and a first air pressure (P1) in an air cleaner assembly downstream of the air filter, wherein P1 corresponds to the first airflow rate. The method further includes measuring a second airflow rate and a second air pressure (P2) in the air cleaner assembly downstream of the air filter, wherein P2 corresponds to the second airflow rate. The method further includes obtaining pressure differentials A1, A2, B1, and B2 from a data storage device. The method also includes calculating with a processor a result indicative of a useful life remaining for the air filter by taking into account P1, P2, A1, A2, B1, and B2. The method also includes reporting the result to a user.

    摘要翻译: 本文提供了一种用于确定空气过滤器的剩余使用寿命的方法。 该方法包括但不限于在空气过滤器下游的空气滤清器组件中测量第一气流速率和第一空气压力(P1),其中P1对应于第一气流速率。 该方法还包括在空气过滤器下游的空气净化器组件中测量第二气流速率和第二空气压力(P2),其中P2对应于第二气流速率。 该方法还包括从数据存储装置获取压力差A1,A2,B1和B2。 该方法还包括通过考虑P1,P2,A1,A2,B1和B2,用处理器计算表示空气过滤器的剩余使用寿命的结果。 该方法还包括向用户报告结果。

    Optical coherent receiver, apparatus for and method of monitoring performance thereof
    55.
    发明授权
    Optical coherent receiver, apparatus for and method of monitoring performance thereof 有权
    光学相干接收机,监测其性能的方法和方法

    公开(公告)号:US08571407B2

    公开(公告)日:2013-10-29

    申请号:US12567245

    申请日:2009-09-25

    IPC分类号: H04B10/08 H04B17/00

    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。

    Apparatus for aligning and leveling a server rack rail
    57.
    发明授权
    Apparatus for aligning and leveling a server rack rail 有权
    用于对准和调平服务器机架导轨的装置

    公开(公告)号:US08418374B2

    公开(公告)日:2013-04-16

    申请号:US13552429

    申请日:2012-07-18

    IPC分类号: G01B11/27

    CPC分类号: G01C15/004

    摘要: An apparatus for aligning a rail in a computer server rack has a laser transmitter for generating a laser dot. The apparatus has a prism for converting the laser dot into a laser line. The apparatus has a laser lens for projecting the laser line. The apparatus has an elongated bar for positioning the apparatus on a rack post, such that the laser line is projected perpendicular to the rack post.

    摘要翻译: 用于对准计算机服务器机架中的轨道的装置具有用于产生激光点的激光发射器。 该装置具有用于将激光点转换成激光线的棱镜。 该装置具有用于投影激光线的激光透镜。 该设备具有用于将设备定位在齿条上的细长杆,使得激光线垂直于齿条柱投影。

    POLARIZATION SCATTERING COMPENSATION DEVICE AND POLARIZATION SCATTERING COMPENSATION METHOD
    58.
    发明申请
    POLARIZATION SCATTERING COMPENSATION DEVICE AND POLARIZATION SCATTERING COMPENSATION METHOD 有权
    偏振散射补偿装置和极化散射补偿方法

    公开(公告)号:US20120275797A1

    公开(公告)日:2012-11-01

    申请号:US13458773

    申请日:2012-04-27

    IPC分类号: H04B10/00 H04B15/00

    摘要: Polarization scattering compensation device and method are disclosed. In the device, a time sequence alignment unit aligns time sequences of signals in the first and second polarization state transmitted simultaneously; a polarization scattering estimation unit estimates a scattering coefficient of a scattering by the signal in the first polarization state on the signal in the second polarization state, and a scattering coefficient of a scattering by the signal in the second polarization state on the signal in the first polarization state; and a polarization scattering removal unit removes the scattering by the signal in the first polarization state on the signal in the second polarization state, and the scattering by the signal in the second polarization state on the signal in the first polarization state, in accordance with the scattering coefficients.

    摘要翻译: 公开了极化散射补偿装置和方法。 在该装置中,时间序列对准单元对准同时传输的第一和第二极化状态的信号的时间序列; 偏振散射估计单元通过第一偏振态的信号对第二偏振态的信号和第二偏振态中的信号的散射散射系数估计第一偏振态的信号的散射散射系数 极化状态; 并且偏振散射去除单元根据第二偏振状态的信号和第一偏振态的信号在第一偏振态的信号上的第一偏振态的信号的散射,根据第 散射系数。

    Air filter assembly
    59.
    发明授权
    Air filter assembly 有权
    空气过滤器总成

    公开(公告)号:US08298308B2

    公开(公告)日:2012-10-30

    申请号:US12723722

    申请日:2010-03-15

    申请人: Lei Li

    发明人: Lei Li

    IPC分类号: B01D46/00

    摘要: A filter assembly includes a housing including a first member and a second member, and supporting therein a filter. The second member is at least partially disposed within an interior of said first member, with said first member vertically moveable relative to said second member in response to an impact load. At least one latch mechanism removeably couples the first member to the second member. The latch mechanism includes a damper that is biased against a vertical wall of the housing. The damper is compressible in a horizontal direction in response to the vertical movement of the first member relative to the second member.

    摘要翻译: 过滤器组件包括壳体,其包括第一构件和第二构件,并且在其中支撑过滤器。 第二构件至少部分地设置在所述第一构件的内部中,其中所述第一构件响应于冲击载荷而相对于所述第二构件竖直移动。 至少一个闩锁机构将第一构件可移除地联接到第二构件。 闩锁机构包括抵靠壳体的垂直壁偏压的阻尼器。 响应于第一构件相对于第二构件的垂直运动,阻尼器在水平方向上是可压缩的。

    INPUT/OUTPUT EFFICIENCY FOR ONLINE ANALYSIS PROCESSING IN A RELATIONAL DATABASE
    60.
    发明申请
    INPUT/OUTPUT EFFICIENCY FOR ONLINE ANALYSIS PROCESSING IN A RELATIONAL DATABASE 失效
    在相关数据库中进行在线分析处理的输入/输出效率

    公开(公告)号:US20120254252A1

    公开(公告)日:2012-10-04

    申请号:US13430897

    申请日:2012-03-27

    IPC分类号: G06F7/00

    CPC分类号: G06F17/30315 G06F17/30592

    摘要: Embodiments of the invention relate to improved input/output efficiency for online analysis processing in a relational database. An aspect of the invention includes selecting a table from a relational database. The table is split by column into sub-tables, with at least one of the sub-tables including at least two columns. Each sub-table is written into a corresponding table of a row-based storage database.

    摘要翻译: 本发明的实施例涉及改进关系数据库中在线分析处理的输入/输出效率。 本发明的一个方面包括从关系数据库中选择一个表。 该表按列划分为子表,其中至少一个子表至少包括两列。 每个子表都写入基于行的存储数据库的相应表。