知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

119 条记录 (耗时 0.019 秒)

    OPTICAL COMMUNICATION SYSTEM, MASTER STATION, AND OPTICAL COMMUNICATION METHOD
    42.
    发明公开
    OPTICAL COMMUNICATION SYSTEM, MASTER STATION, AND OPTICAL COMMUNICATION METHOD 审中-公开

    公开(公告)号：US20230170990A1

    公开(公告)日：2023-06-01

    申请号：US17921569

    申请日：2020-05-12

    申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    发明人： Rintaro HARADA ,  Hirotaka UJIKAWA ,  Shin KANEKO ,  Jun TERADA

    IPC分类号： H04B10/035 ,  H04B10/079

    CPC分类号： H04B10/035 ,  H04B10/0795

    摘要： Time taken for resuming communication in a protection scheme using a backup path in an optical communication system including a master station device and a plurality of slave station devices is decreased. The plurality of slave station devices are connected in parallel to a looped path. A communication path between the master station device and each of the slave station device includes a normal path and a backup path. The master station device performs communication control processing for each of the slave station device based on RTT. A first slave station device is a slave station device with which communication through the normal path has become impossible. First backup path RTT of the first slave station device is calculated based on first normal path RTT of the first slave station device, first partial RTT between the master station device and the looped path, and loop propagation time necessary for one trip through the looped path. The communication control processing for the first slave station device is resumed based on the calculated first backup path RTT without measurement of the first backup path RTT when the first slave station device is sensed.

    DYNAMIC ERROR QUANTIZER TUNING SYSTEMS AND METHODS
    43.
    发明申请
    DYNAMIC ERROR QUANTIZER TUNING SYSTEMS AND METHODS 有权

    公开(公告)号：US20220140893A1

    公开(公告)日：2022-05-05

    申请号：US17580607

    申请日：2022-01-20

    申请人： Maxim Integrated Products, Inc.

    发明人： Charles Razzell

    IPC分类号： H04B10/035 ,  H04B10/077 ,  H04B10/63

    摘要： Dynamic error-quantizer tuning systems and methods prevent misconvergence to local minima by using a dynamic quantizer circuit that controls reference voltages of three or more comparators that are independently adjusted to modify the transfer function of the dynamic quantizer circuit. A weighted sum of the comparator outputs is subtracted from the input to form an error signal in a control loop. The ratio of the reference voltages is chosen to reduce or eliminate local minima during a convergence of the control loop and is set to values that minimize a mean squared error signal with respect to discrete modulation states of the input after the convergence of the control loop is complete.

    Optical tapping in an indexing architecture
    45.
    发明授权
    Optical tapping in an indexing architecture 有权

    公开(公告)号：US10790899B2

    公开(公告)日：2020-09-29

    申请号：US16477781

    申请日：2018-01-11

    申请人： COMMSCOPE TECHNOLOGIES LLC

    发明人： Erik J. Gronvall

    IPC分类号： H04B10/035 ,  H04B10/25 ,  H04B10/2581

    摘要： An indexing system includes an indexing component; a redundant optical path; and a fiber tap arrangement. Multiple indexing components can be daisy-chained together in the indexing system. The redundant optical path is created between any forward port and any rearward port in the network. Multiple redundant optical paths can be created within the network. One or more tap arrangements can be disposed along each redundant optical path. Accordingly, feed signals in a bidirectional indexing environment can be supplied to each drop line along the redundant optical path from either direction without recabling.

    OPTICAL TEST DEVICE AND SYSTEMS
    46.
    发明申请
    OPTICAL TEST DEVICE AND SYSTEMS 审中-公开

    公开(公告)号：US20200099445A1

    公开(公告)日：2020-03-26

    申请号：US16141813

    申请日：2018-09-25

    申请人： Level 3 Communications, LLC

    发明人： Jeffrey K. Storey ,  John F. Waters ,  Andrew Dugan ,  Salvador Paredes ,  Gary Ratterree

    IPC分类号： H04B10/079 ,  H04B10/035 ,  G02B6/293

    摘要： Systems, methods, and devices are disclosed for monitoring optical communications between a managed location and a remote location. In particular, an optical signal is transmitted over an optical fiber and passed-through a test device. A portion of the optical signal is filtered from the original optical signal and passed to a monitoring unit. The monitoring unit may instruct one or more switches in the test device to loop the optical signal back toward the managed location. Subsequently, testing and monitoring may be performed at the managed location. The device may provide a test output or may transmit the information to the managed location.

    Systems and methods for achieving improved eye safety of an optical transceiver
    48.
    发明授权
    Systems and methods for achieving improved eye safety of an optical transceiver 有权
    提高光收发器眼睛安全性的系统和方法

    公开(公告)号：US09391698B1

    公开(公告)日：2016-07-12

    申请号：US14061503

    申请日：2013-10-23

    申请人： Google Inc.

    发明人： Ryohei Urata ,  Nathan Folkner ,  Zuowei Shen

    IPC分类号： H04B10/08 ,  H04B10/00 ,  H04B10/077 ,  H04B10/035 ,  H04B10/073

    CPC分类号： H04B10/0779 ,  H04B10/035 ,  H04B10/073 ,  H04B10/0799 ,  H04B10/40 ,  H04B2210/08

    摘要： Systems and methods for achieving eye safety of an optical transceiver are provided. An optical module can be configured to output a first optical signal. A first photodetector can be configured to output a signal indicative of a presence or absence of a second optical signal. A controller can be coupled to the optical module and the first photodetector and can be configured to control the output of the optical module. In response to a determination that an output of the first photodetector indicates the second optical signal is absent, the controller can control the optical module to output the first signal at a decreased average optical power. In response to a determination that an output of the first photodetector indicates the second optical signal is present, the controller can control the optical module to output the first signal at an increased average optical power.

    摘要翻译： 提供了用于实现光收发器的眼睛安全的系统和方法。 光学模块可以被配置为输出第一光信号。 第一光电检测器可以被配置为输出指示第二光信号的存在或不存在的信号。 控制器可以耦合到光学模块和第一光电检测器，并且可以被配置为控制光学模块的输出。 响应于确定第一光电检测器的输出指示第二光信号不存在，控制器可以控制光模块以平均光功率降低输出第一信号。 响应于第一光电检测器的输出表示第二光信号的确定，控制器可以控制光模块以增加的平均光功率输出第一信号。

    Airfield lighting control and monitoring system utilizing fiber optic double loop self healing communications
    49.
    发明授权
    Airfield lighting control and monitoring system utilizing fiber optic double loop self healing communications 有权
    利用光纤双回路自愈通信的机场照明控制和监控系统

    公开(公告)号：US09219542B2

    公开(公告)日：2015-12-22

    申请号：US14324988

    申请日：2014-07-07

    申请人： Cooper Technologies Company

    发明人： Maoz Ohad ,  Andrei Weintraub

    IPC分类号： H04B10/08 ,  H04B10/035 ,  H05B37/02 ,  H04B10/80 ,  B64F1/20

    CPC分类号： H04B10/035 ,  B64F1/20 ,  H04B10/807 ,  H05B37/0263

    摘要： Control and monitoring of airfield lighting from a control tower and other maintenance/supervisory locations uses double loop self healing fiber optic communications circuits to enhances speed of operation even with large and complex airfield lighting system requirements, and significantly increased reliability and operating lifetime thereof. A plurality of local light control and monitoring groups are used, wherein each group has at least one fiber optic communications concentrator that independently communicates with light controllers within the group and the remote supervisory control and monitoring systems in the control tower and other locations. This allows faster control response of the lamps in each of the airfield light fixtures, and monitoring concentration of operational data within each group. Each of the at least one fiber optic concentrators is optically coupled to double loop self healing fiber optic communications backbone circuits coupled to main and backup computer supervisory control systems for redundancy purposes.

    摘要翻译： 控制和监控来自控制塔和其他维护/监控位置的机场照明使用双回路自愈光纤通信电路，即使在大型和复杂的机场照明系统要求下也能提高运行速度，并显着增加其可靠性和使用寿命。 使用多个本地光控制和监视组，其中每个组具有至少一个光纤通信集中器，其独立地与组内的光控制器以及控制塔和其他位置中的远程监控和监视系统通信。 这允许在每个机场照明装置中的灯的控制响应更快，并且监视每组内的操作数据的集中。 所述至少一个光纤聚光器中的每一个光学耦合到耦合到主计算机和备用计算机监视控制系统的双回路自愈光纤通信主干电路，用于冗余目的。

    Optical transmission system
    50.
    发明授权
    Optical transmission system 失效
    光传输系统

    公开(公告)号：US06980745B2

    公开(公告)日：2005-12-27

    申请号：US10014442

    申请日：2001-12-14

    申请人： Hiroyuki Deguchi ,  Shin-ichirou Harasawa ,  Izumi Yokota

    发明人： Hiroyuki Deguchi ,  Shin-ichirou Harasawa ,  Izumi Yokota

    IPC分类号： G02F1/35 ,  H01S3/30 ,  H04B10/035 ,  H04B10/07 ,  H04B10/077 ,  H04B10/29 ,  H04B10/291 ,  H04B10/54 ,  H04B10/58 ,  H04B17/40 ,  H04B10/16

    CPC分类号： H04B10/2918 ,  H04B10/0771 ,  H04B10/0777 ,  H04B10/2916 ,  H04B2210/074 ,  H04B2210/078

    摘要： An optical transmission system ensuring high-quality monitor control even if an optical fiber fault occurs. A monitor instruction sending unit sends a monitor instruction. An operating condition recognizing unit receives a response signal and recognizes the operating condition. A filtering unit filters the monitor instruction and the response signal. A monitor control unit monitors the operating condition of its own repeater in response to the monitor instruction, and generates resultant response information. A pump unit generates a pump light to cause Raman amplification within an optical fiber transmission medium. A regeneration control unit performs a regeneration control of the response signal to thereby create a regenerated signal. A modulation control unit modulates the pump light by the response information or the regenerated signal to thereby generate the response signal.

    摘要翻译： 即使出现光纤故障，光传输系统也能保证高质量的监控。 监视器指令发送单元发送监视指令。 操作条件识别单元接收响应信号并识别操作条件。 滤波单元过滤监视指令和响应信号。 监视器控制单元响应于监视指令来监视其自身中继器的工作状态，并产生合成响应信息。 泵单元产生泵浦光以在光纤传输介质内引起拉曼放大。 再生控制单元执行响应信号的再生控制，从而产生再生信号。 调制控制单元通过响应信息或再生信号来调制泵浦光，从而产生响应信号。