Method and apparatus for updating subcarrier modulation in a
communication network
    1.
    发明授权
    Method and apparatus for updating subcarrier modulation in a communication network 失效
    用于更新通信网络中的子载波调制的方法和装置

    公开(公告)号:US5956165A

    公开(公告)日:1999-09-21

    申请号:US928426

    申请日:1997-09-12

    摘要: A system, method and apparatus are described that allow for the updating and transmittal of a low data rate signal providing ancillary network data as a rider on a high data rate optical signal. This subcarrier modulated signal can be processed and updated by using a drop/insert facility without having to alter the high data rate signal component of the data signal. Since the subcarrier signal can be detected by inexpensive equipment without having to detect and demultiplex the high data rate signal, the approach described offers a cost effective solution to the problem of network monitoring. Ancillary network management information can be communicated regardless of the quality or loss of the high data rate signal. In addition, by updating the subcarrier signal rider in a cumulative manner, a complete history of the fiber link the modulated optical signal travels on is provided to network management.

    摘要翻译: 描述了一种系统,方法和装置,其允许在高数据速率光信号上更新和传送作为骑手的辅助网络数据的低数据速率信号。 该子载波调制信号可以通过使用丢弃/插入设施进行处理和更新,而不必改变数据信号的高数据速率信号分量。 由于子载波信号可以由便宜的设备检测,而不必检测和解复用高数据速率信号,因此所描述的方法为网络监控的问题提供了成本有效的解决方案。 无论高数据速率信号的质量或损失如何,都可以传送辅助网络管理信息。 此外,通过以累积的方式更新子载波信号骑手,将经调制的光信号传播的光纤链路的完整历史提供给网络管理。

    Characterization and control of optical dispersion compensating element
    2.
    发明授权
    Characterization and control of optical dispersion compensating element 有权
    光学色散补偿元件的表征与控制

    公开(公告)号:US07580639B2

    公开(公告)日:2009-08-25

    申请号:US10747567

    申请日:2003-12-29

    IPC分类号: H04B10/12

    CPC分类号: H04B10/2519

    摘要: An apparatus and method are applied to characterizing an dispersion-affecting element for use in controlling chromatic dispersion in an optical communications link. Information regarding the behavior of the dispersion-affecting element is recorded and stored in a medium that is provided for deployment with the dispersion-affecting element to enable improved management and active control of the dispersion-affecting element. The suitability of the dispersion-affecting element for operating under different conditions may also be characterized.

    摘要翻译: 应用装置和方法来表征用于控制光通信链路中的色散的色散影响元件。 关于色散影响元件的行为的信息被记录并存储在提供用于与分散影响元件一起展开的介质中,以实现对色散影响元件的改进的管理和主动控制。 分散影响元件在不同条件下操作的适用性也可以被表征。

    Systems and methods for controlling duct pressurization for cable installation
    3.
    发明授权
    Systems and methods for controlling duct pressurization for cable installation 失效
    控制电缆安装管道加压的系统和方法

    公开(公告)号:US07562861B2

    公开(公告)日:2009-07-21

    申请号:US11096289

    申请日:2005-04-01

    IPC分类号: E21C29/16

    CPC分类号: H02G1/086 G02B6/4464

    摘要: A system includes a duct, a pressurized fluid source, and a valve. The duct receives one or more cables and the pressurized fluid source couples to a first end of the duct and produces fluid pressure within the duct. The valve couples to a second end of the duct and is closed for a time to build pressure within the duct, and then opened to permit the fluid under pressure within the duct to escape rapidly from the duct and propel the one or more cables through the duct.

    摘要翻译: 系统包括管道,加压流体源和阀。 管道接收一个或多个电缆,并且加压流体源耦合到管道的第一端并在管道内产生流体压力。 阀连接到管道的第二端并且被关闭一段时间以在管道内建立压力,然后打开以允许管道内的压力下的流体快速地从管道逸出并推动一个或多个电缆穿过管道 管。

    Optical link with reduced four-wave mixing
    4.
    发明授权
    Optical link with reduced four-wave mixing 失效
    光链路减少四波混频

    公开(公告)号:US06650842B1

    公开(公告)日:2003-11-18

    申请号:US09215844

    申请日:1998-12-18

    IPC分类号: H04B1000

    CPC分类号: H04B10/2563

    摘要: An optical communication system and method of use thereof which uses dispersion compensators to intentionally create a dispersive condition at the output of subsequent inline optical amplifiers. The present invention reduces four-wave mixing and increases the allowable spacing between optical amplifiers, thus reducing the required number of amplifiers and dispersion compensators for a given length of optical fiber. In one embodiment, dispersion compensators and optical amplifiers are alternately spaced from one another along a length of an optical fiber such that the dispersion compensators render a dispersive condition at the amplifiers allowing each amplifier to be run at a higher power level. In another embodiment, the dispersion compensator is collocated with the amplifier, but is positioned between a pre-amp stage and a high power output stage to overcompensate both the slope and absolute dispersion of the fiber up to that point. The dispersion compensator provides a dispersive condition at the output of the output stage allowing the amplifier to be operated at a higher power level without creating four-wave mixing. In yet another embodiment of the invention, an additional dispersion compensator is provided at the output of a transmitter to overcompensate both the slope and absolute dispersion of the fiber to render a substantially neutral dispersion signal upon arrival at the next optical line element or receiver.

    摘要翻译: 一种光通信系统及其使用方法,其使用色散补偿器有意在随后的在线光放大器的输出端产生色散条件。 本发明减少了四波混频并且增加了光放大器之间的允许间隔,从而减少了给定长度的光纤所需数量的放大器和色散补偿器。 在一个实施例中,色散补偿器和光放大器沿着光纤的长度彼此交替地间隔开,使得色散补偿器在放大器处呈现色散条件,允许每个放大器以更高的功率水平运行。 在另一个实施例中,色散补偿器与放大器并置,但位于前置放大器级和高功率输出级之间,以过度补偿光纤直到该点的斜率和绝对色散。 色散补偿器在输出级的输出端提供色散条件,允许放大器在更高的功率水平下工作,而不产生四波混频。 在本发明的另一个实施例中,在发射机的输出端处提供附加的色散补偿器,以在光纤的斜率和绝对色散两者之间过载补偿,以在到达下一个光线路元件或接收器时呈现基本中性的色散信号。

    Verification of path integrity in optical switch network

    公开(公告)号:US09271059B2

    公开(公告)日:2016-02-23

    申请号:US13052858

    申请日:2011-03-21

    IPC分类号: H04Q11/00 H04B10/073

    摘要: To verify the integrity of optical paths through and among optical switches, optical signals are provided with co-propagating supplemental signals. The supplemental signals preferably have at least one characteristic which allows distinguishing one supplemental signal from another. Associated with a port of a switch, means are provided for detecting a supplemental signal and determining if the supplemental signal indicates that a desired optical signal is passing through the port as expected and desired. Means for imparting or changing the distinguishing characteristic of a supplemental signal may also be employed to facilitate verifying the passage of optical signals.

    Verification of path integrity in optical switch network
    6.
    发明授权
    Verification of path integrity in optical switch network 有权
    光交换网路径完整性验证

    公开(公告)号:US07995916B2

    公开(公告)日:2011-08-09

    申请号:US11265575

    申请日:2005-11-02

    IPC分类号: H04B10/08 H04B17/00

    摘要: To verify the integrity of optical paths through and among optical switches, optical signals are provided with co-propagating supplemental signals. The supplemental signals preferably have at least one characteristic which allows distinguishing one supplemental signal from another. Associated with a port of a switch, means are provided for detecting a supplemental signal and determining if the supplemental signal indicates that a desired optical signal is passing through the port as expected and desired. Means for imparting or changing the distinguishing characteristic of a supplemental signal may also be employed to facilitate verifying the passage of optical signals.

    摘要翻译: 为了验证通过光开关之间的光路的完整性,光信号被提供有共同传播的补充信号。 补充信号优选地具有允许区分一个补充信号与另一个的至少一个特性。 与开关端口相关联,提供用于检测补充信号的装置,并且确定补充信号是否指示期望的光信号正如期望和期望地通过端口。 也可以采用用于赋予或改变补充信号的区别特征的手段来促进验证光信号的通过。

    Verification of path integrity in optical switch network
    7.
    发明授权
    Verification of path integrity in optical switch network 有权
    光交换网路径完整性验证

    公开(公告)号:US06980736B1

    公开(公告)日:2005-12-27

    申请号:US10040226

    申请日:2002-01-03

    IPC分类号: H04Q11/00 H04B10/08

    摘要: To verify the integrity of optical paths through and among optical switches, optical signals are provided with co-propagating supplemental signals. The supplemental signals preferably have at least one characteristic which allows distinguishing one supplemental signal from another. Associated with a port of a switch, means are provided for detecting a supplemental signal and determining if the supplemental signal indicates that a desired optical signal is passing through the port as expected and desired. Means for imparting or changing the distinguishing characteristic of a supplemental signal may also be employed to facilitate verifying the passage of optical signals.

    摘要翻译: 为了验证通过光开关之间的光路的完整性,光信号被提供有共同传播的补充信号。 补充信号优选地具有允许区分一个补充信号与另一个的至少一个特性。 与开关端口相关联,提供用于检测补充信号的装置,并且确定补充信号是否指示期望的光信号正如期望和期望地通过端口。 也可以采用用于赋予或改变补充信号的区别特征的手段来促进验证光信号的通过。

    Non-linear rewind of video programs
    8.
    发明授权
    Non-linear rewind of video programs 有权
    视频节目的非线性倒带

    公开(公告)号:US08897626B2

    公开(公告)日:2014-11-25

    申请号:US12827276

    申请日:2010-06-30

    摘要: A rewind or fast forward operation may be performed in which a series of reduced-in-size images from previous frames in a video program may be presented to the viewer. In one implementation, a device may obtain sampled images corresponding to select frames of the video program and output a series of the sampled images in an order in which a sampling time corresponding to each of the sampled images in the video program monotonically increases or decreases in the output series. Differences in the sample times between successive images in the series of sampled images may not be uniform. The device may receive a selection of one of the images in the output series of sampled images and change a current output location of the video program to a location corresponding to the sampling time of the selected image.

    摘要翻译: 可以执行倒带或快进操作,其中可以向观看者呈现来自视频节目中先前帧的一系列缩小尺寸图像。 在一个实现中,设备可以获得与视频节目的选择帧相对应的采样图像,并且以与视频节目中的每个采样图像相对应的采样时间单调增加或减少的顺序输出一系列采样图像 输出系列。 一系列采样图像中连续图像之间的采样时间差异可能不一致。 该装置可以接收所选择的图像的输出序列中的一个图像的选择,并且将视频节目的当前输出位置改变到与所选图像的采样时间相对应的位置。

    Method and system for enabling a blind computer user to locate icons in
a graphical user interface
    9.
    发明授权
    Method and system for enabling a blind computer user to locate icons in a graphical user interface 失效
    用于使盲计算机用户能够在图形用户界面中定位图标的方法和系统

    公开(公告)号:US5287102A

    公开(公告)日:1994-02-15

    申请号:US811507

    申请日:1991-12-20

    摘要: Disclosed is a computer audio interface adapted to enable blind or visually impaired users to locate icons positioned in rows in the background of a graphical user interface. Whenever the pointer of the interface is positioned on the background, the system produces a distinctive tone. Whenever the pointer is positioned in an icon row that is occupied by one or more icons, the system produces a distinctive chord. Whenever the pointer is positioned in the background and not in an occupied row, the system produces stereo effects that give the user information as to the relative left/right position of the pointer. Whenever the pointer is positioned in an occupied row, the amplitude of the left and right stereo channels is controlled such that whenever the pointer is to the left of the leftmost icon, substantially all of the volume is produced by the left speaker and whenever the pointer is to the right of the rightmost icon, substantially all of the the volume is produced by the right speaker. Whenever the pointer is located between the leftmost and rightmost icons, the volume is balanced substantially equally between the two speakers.

    摘要翻译: 公开了一种计算机音频接口,其适于使盲人或视觉受损用户能够定位在图形用户界面的背景中的行中定位的图标。 每当接口的指针位于背景上时,系统将产生独特的音调。 每当指针位于由一个或多个图标占据的图标行中时,系统产生独特的和弦。 每当指针位于背景中而不是在占用行中时,系统产生立体声效果,其给予用户关于指针的相对左/右位置的信息。 每当指针位于占用行中时,左右立体声通道的振幅被控制,使得每当指针在最左边的图标的左侧时,基本上所有的音量都由左扬声器产生,并且每当指针 在最右边的图标的右侧,大部分的音量都是由右侧扬声器产生的。 每当指针位于最左侧和最右边的图标之间时,两个扬声器之间的音量基本相等。