公开(公告)号：US5218662A

公开(公告)日：1993-06-08

申请号：US879434

申请日：1992-05-06

申请人： John M. Dugan

发明人： John M. Dugan

IPC分类号： G02B6/34 ,  H04B10/18

CPC分类号： H04B10/25253 ,  H04B10/25133 ,  Y10S359/90

摘要： The present invention provides a method and system that compensate end-to-end optical dispersion for a fiber-optic cable having a plurality of predetermined compensations sites to within a predetermined dispersion limit using a predetermined dispersion compensation increment. With the method and system, the predetermined dispersion compensation increment may exceed both the predetermined compensation limit as well as the compensation limit divided by the number of sites. The method includes the steps of compensating optical dispersion using the compensation increment for each of the plurality of predetermined compensation sites to yield an end-to-end optical dispersion compensation within the predetermined optical dispersion limit. This may include optical dispersion over-compensation at some sites and optical dispersion under-compensation at other sites.

公开(公告)号：US5189766A

公开(公告)日：1993-03-02

申请号：US829121

申请日：1992-01-31

申请人： William F. Weber

发明人： William F. Weber

IPC分类号： F16B2/02 ,  F16B2/22 ,  F16L3/08 ,  F16L3/223

CPC分类号： F16L3/2235 ,  F16B2/02 ,  F16L3/085 ,  H02G3/263 ,  Y10S411/92 ,  Y10T24/42 ,  Y10T24/44034 ,  Y10T403/125

摘要： A snap fit cable retainer is illustrated for accommodating multiple diameter cables in a snug fit configuration by having the bit portion between adjacent side legs being closer to the extremities of the legs than is the main bit portion of the overall connector. In this way, large diameter cables can be run lengthwise through the retainer and smaller diameter cables can be run crosswise through the retainer. The retainer can also accommodate a layer of cables in each direction simultaneously by placing the lower level in the crosswise direction through the retainer and the second layer on top in the lengthwise direction.

摘要翻译： 示出了卡扣配合电缆保持器，用于通过使相邻侧腿之间的位部分比整个连接器的主要位部更靠近腿部的末端，以容纳多个直径的电缆以适合配合的配置。 以这种方式，大直径电缆可以通过保持器纵向延伸，并且较小直径的电缆可以横向穿过保持器。 保持器还可以通过将下层在横向方向上穿过保持器并且第二层在纵向方向上在顶部上同时容纳在每个方向上的一层电缆。

公开(公告)号：US5189673A

公开(公告)日：1993-02-23

申请号：US738181

申请日：1991-07-30

申请人： Larry W. Burton ,  Joseph E. Sutherland ,  Paul M. Matsumura ,  Karen V. Ball ,  Richard M. Czerwiec

发明人： Larry W. Burton ,  Joseph E. Sutherland ,  Paul M. Matsumura ,  Karen V. Ball ,  Richard M. Czerwiec

IPC分类号： H04N7/22

CPC分类号： H04N7/22

摘要： In an integrated telecommunications network adapted to provide narrowband telephony signals and broadband switched video signals, control signals for the broadband video signals are transmitted in the narrowband as baseband signals, which are frequency division multiplexed with the broadband switched video signals. The video control signals are transmitted over the same transmission lines as the broadband video signals and do not require the installation of additional transmission lines. Control signals from a plurality of subscribers are multiplexed together at a network unit and are transmitted as a channel on an optical fiber, after which the channels from a plurality of network units are further multiplexed together to form a frame of control channels which are transmitted to a video controller unit.

摘要翻译： 在适于提供窄带电话信号和宽带交换视频信号的集成电信网络中，宽带视频信号的控制信号作为与宽带交换视频信号频分复用的基带信号在窄带中传输。 视频控制信号通过与宽带视频信号相同的传输线传输，并且不需要安装附加的传输线。 来自多个用户的控制信号在网络单元处被多路复用在一起作为光纤上的信道发送，之后来自多个网络单元的信道被进一步多路复用在一起以形成控制信道的帧，该帧被发送到 视频控制器单元。

公开(公告)号：US5181106A

公开(公告)日：1993-01-19

申请号：US738332

申请日：1991-07-31

申请人： Joseph E. Sutherland

发明人： Joseph E. Sutherland

IPC分类号： H04N7/22

CPC分类号： H04N7/22

摘要： A video line shelf arrangement allows for incremental growth in video channels provided to optical network units. The arrangement includes a number of video line shelves disposed vertically in a column. Each video line shelf includes a number of slots, with the slots of adjacent shelves being aligned vertically. Video line cards each providing six video channels are inserted into selected slots of the video line shelf, as are necessary to provide the required number of channels. A vertical column of video line cards is arranged to service a single optical network unit. Thus, only the necessary number of video line cards are inserted into the slots aligned in a column serving a single optical network unit.

摘要翻译： 视频线架架布置允许提供给光网络单元的视频通道的增量增长。 该装置包括垂直设置在一列中的多个视频线架。 每个视频线架包括多个槽，其中相邻搁板的槽垂直对齐。 每个提供六个视频通道的视频线卡被插入到视频线架的选定的插槽中，因为需要提供所需数量的通道。 视频线卡的垂直列被设置为服务于单个光网络单元。 因此，只有必要数量的视频线卡被插入到用于单个光网络单元的列中对准的时隙中。

公开(公告)号：US5161152A

公开(公告)日：1992-11-03

申请号：US452291

申请日：1989-12-15

申请人： Richard M. Czerwiec ,  Raymond E. Tyrrell ,  Gus C. Sanders ,  Joseph E. Sutherland ,  Richard J. Sanders, Jr. ,  Claude M. Hurlocker ,  Hal A. Thorne ,  V. Paul Runyon ,  Enn Aro

发明人： Richard M. Czerwiec ,  Raymond E. Tyrrell ,  Gus C. Sanders ,  Joseph E. Sutherland ,  Richard J. Sanders, Jr. ,  Claude M. Hurlocker ,  Hal A. Thorne ,  V. Paul Runyon ,  Enn Aro

IPC分类号： H04J3/16 ,  H04L12/52 ,  H04Q11/04

CPC分类号： H04Q11/04 ,  H04J3/1611 ,  H04L12/52

摘要： A terminal for a telecommunications system provides access to one or two high-speed synchronous transmission lines by both low-speed transmission lines and subscriber lines. A core module includes interfaces to the high-speed lines, a time slot interchanger, an interface to the low-speed transmission lines, processors and overhead circuitry for supporting the terminal. An access module includes a plurality of line shelves connected to subscriber lines, each line shelf includes a pair of processors and for time slot assignors. A multi-link serial bus connects the time slot interchanger to the access module and to the low-speed interface and provides close coupling between the processors in the core module and the line shelves. The processors cooperate to groom subscriber information from said subscriber lines to and from time slots in said high-speed feeder line and said low-speed transmission line. Subscriber information may also be groomed between time slots of the high-speed feeder line and the low-speed transmission lines and between time slots within each subscriber line.

公开(公告)号：US5130561A

公开(公告)日：1992-07-14

申请号：US574974

申请日：1990-08-29

申请人： Brent A. Elliott ,  C. Lee Marusik ,  Edward D. Johnson

发明人： Brent A. Elliott ,  C. Lee Marusik ,  Edward D. Johnson

IPC分类号： H02M1/14 ,  H02M3/28

CPC分类号： H02M1/14 ,  H02M3/285 ,  H02M2001/008 ,  Y10T307/406

摘要： Two pulse-width modulated power supplies are synchronized to operate at 180.degree. of phase shift to reduce the peak amplitude of the instantaneous current drawn from the DC input bus. The circuit includes means for disabling the synchronization upon detection of an undervoltage fault condition on the output of either supply. This feature allows frequency programming techniques to be used to provide foldback current limiting for either supply without affecting the operation of the other supply.

摘要翻译： 两个脉冲宽度调制电源同步工作在180°的相移，以减少从直流输入总线吸取的瞬时电流的峰值幅度。 该电路包括用于在检测到任一电源的输出上的欠电压故障状况时禁止同步的装置。 该功能允许频率编程技术用于为任一电源提供折返电流限制，而不会影响另一个电源的操作。

公开(公告)号：US5903372A

公开(公告)日：1999-05-11

申请号：US797115

申请日：1997-02-10

申请人： Richard M. Czerwiec

发明人： Richard M. Czerwiec

IPC分类号： H04L12/28 ,  H04N7/10 ,  H04N7/14 ,  H04J14/02 ,  H04B10/00

CPC分类号： H04L12/2801 ,  H04N7/148 ,  H04N7/108

摘要： The present invention details an apparatus for distribution of video and telephony services on a single twisted wire pair to each of a plurality of subscribers, comprising an optical network unit (ONU) connected by means of an optical fiber to a remote terminal, the ONU for installation in a neighborhood of primary and secondary subscribers. The ONU includes a switch matrix card for installation in the ONU for connection to POTS cards for a first number of primary subscribers over a corresponding first number of single twisted wire pairs and also for switched connection to a second number of switchable video cards, the first number being greater than the second number, the switch matrix card for connecting one or more of the switchable video cards to corresponding POTS cards resulting in an overlay of the video services and the telephony services using a VDSL technique, the overlay for remote selection over the fiber from the remote terminal whereby dispatch of a service person to connect or disconnect video services is avoided.

摘要翻译： 本发明详细说明了一种用于在单个双绞线上分配多个用户中的视频和电话服务的装置，包括通过光纤连接到远程终端的光网络单元（ONU），所述ONU用于 安装在一级和二级订户附近。 ONU包括用于安装在ONU中的开关矩阵卡，用于通过相应的第一数量的单股双绞线对连接到第一数量的主用户的POTS卡，并且还用于切换连接到第二数量的可切换显示卡，第一 数字大于第二个数字，用于将一个或多个可切换视频卡连接到相应的POTS卡的开关矩阵卡，导致使用VDSL技术的视频服务和电话服务的覆盖，该覆盖用于在 来自远程终端的光纤，从而避免了服务人员的连接或断开视频服务的发送。

公开(公告)号：US5800666A

公开(公告)日：1998-09-01

申请号：US726609

申请日：1996-10-07

申请人： Harry B. Bonham, Jr. ,  Richard E. Lucas, Jr.

发明人： Harry B. Bonham, Jr. ,  Richard E. Lucas, Jr.

IPC分类号： G02B6/245 ,  G02B6/25 ,  G02B6/42 ,  C03C25/06

CPC分类号： G02B6/25 ,  G02B6/245 ,  G02B6/4203

摘要： A method and system for forming microlens (78) on an optical fiber (60) include optical fiber lensing device (10) having lowering mechanism (18) for inserting optical fiber (60) at a predetermined and controlled speed to a predetermined depth in oil-acid bath having oil layer (62), acid layer (64), and boundary (68) between oil layer (62) and acid layer (64). The next step is to etch optical fiber (60) at boundary (68) by forming meniscus (66) around optical fiber (60) to selectively and controllably form on optical fiber (60) a microlens (78) having a predetermined shape, preferably a hyperbolic shape. The etching includes the steps of first tapering optical fiber (60) to a shape determined by the distance that optical fiber (60) is first inserted into acid layer (64). The etch step further chemically mills microlens (78) on optical fiber (60) to the predetermined shape by controlling the etch time and position of optical fiber (60) relative to boundary (68) for etching optical fiber (60) at boundary (68).

摘要翻译： 一种用于在光纤（60）上形成微透镜（78）的方法和系统包括具有用于以预定和控制的速度将光纤（60）插入油中预定深度的下降机构（18）的光纤透镜装置（10） - 含油层（62），酸层（64）和油层（62）与酸层（64）之间的边界（68）的酸浴。 下一步是通过在光纤（60）周围形成弯液面（66）来在边界（68）处蚀刻光纤（60），以选择性地和可控地在光纤（60）上形成具有预定形状的微透镜（78） 双曲形。 蚀刻包括以下步骤：首先使光纤（60）逐渐变细，使之成为由光纤（60）首先插入酸层（64）的距离所确定的形状。 蚀刻步骤通过控制光纤（60）相对于边界（68）的蚀刻时间和位置来蚀刻光纤（60）边界（68），进一步化学研磨光纤（60）上的微透镜（78）至预定形状 ）。

公开(公告)号：US5740157A

公开(公告)日：1998-04-14

申请号：US887156

申请日：1992-05-21

申请人： Sahabettin C. Demiray ,  Dale L. Krisher ,  Raymond E. Tyrrell

发明人： Sahabettin C. Demiray ,  Dale L. Krisher ,  Raymond E. Tyrrell

IPC分类号： H04L29/14 ,  H04J3/14 ,  H04J3/16 ,  H04L12/24 ,  H04Q11/04 ,  H04L1/22

CPC分类号： H04J3/1611 ,  H04J3/14 ,  H04Q11/0407

摘要： Redundant facility payload signals (12, 14) received by redundant interface modules (16, 18) are redundantly provided (28, 30; 32, 34) to redundant downstream modules (24, 26) in an equipment (10). A non-symmetrical facility protection algorithm is resident in the B interface module (18). Symmetrical equipment protection algorithms are independently resident and operative in each module of pairs of identical A and B modules at each stage of the data stream. Module or data failures result in switchover only of the disabled data path or module so that the ability to transport payload is maintained and other modules or data paths are unaffected. Facility switchover is effected by detecting a working line failure and transmitting commands to switch the protection line to the A path modules. Equipment switchover is effected by checking for a working or protection module failure independently in each path and independently communicating independent switchover decisions to the other side and downstream. The methodology and mechanism are disclosed in a SONET element embodiment, although the invention is applicable in other contexts.

摘要翻译： 冗余接口模块（16,18）接收的冗余设施有效载荷信号（12,14）被冗余地提供给设备（10）中的冗余下游模块（24,26）（28,30; 32,34）。 非对称设备保护算法驻留在B接口模块（18）中。 在数据流的每个阶段，对称设备保护算法独立地驻留在每个相同A和B模块对中的模块中。 模块或数据故障导致只切换禁用的数据路径或模块，以便维护传输有效负载的能力，并且其他模块或数据路径不受影响。 通过检测工作线路故障并发送命令将保护线路切换到A路径模块来实现设备切换。 通过在每个路径中独立检查工作或保护模块故障并独立地将独立切换决策传递到另一侧和下游来实现设备切换。 在SONET元件实施例中公开了方法和机制，尽管本发明可应用于其它上下文。

公开(公告)号：US5689530A

公开(公告)日：1997-11-18

申请号：US520034

申请日：1995-08-28

申请人： Charles M. Honaker, Jr.

发明人： Charles M. Honaker, Jr.

IPC分类号： H04J3/06 ,  H04L7/033 ,  H04L25/34 ,  H04L25/49

CPC分类号： H04L7/0338 ,  H04J3/0688

摘要： A circuit for recovering a clock signal from incoming data and for retiming the incoming data comprises circuitry for generating a plurality of phased clock signals responsive to a selected frequency and clock recovery circuitry for generating a recovered clock from the plurality of phased clocks and the incoming data. The recovered clock is used to retime the data, which may be either RZ or NRZ data. To recover clock from the incoming data, the presence of a logic "1" is detected in one or more data streams and the phase of the data relative to the phased clocks is determined. Hold circuitry stores the phase information during the interval between logic "1" bits and aligns the phase information with the leading phased clock. Compare circuitry and counter circuitry detect changes in phase information to insure that a change is not merely the result of a metastable anomaly. Phase control circuitry uses phase information from the compare block to switch between phased clocks to generate the glitchless recovered clock. The recovered clock is used by the data retime circuitry to retime the data with the recovered clock. A multi-tap delay line can be used to generate a plurality of phased clock signals from a selected data frequency, with the clock recovery circuitry using a predetermined number of the plurality of phased clocks to generate the recovered clock responsive to the frequency of the incoming data.

摘要翻译： 用于从输入数据恢复时钟信号并重定时输入数据的电路包括响应于选定的频率和时钟恢复电路产生多个相控时钟信号的电路，用于从多个相控时钟和输入数据产生恢复时钟 。 恢复的时钟用于重新计算数据，可能是RZ或NRZ数据。 为了从输入数据恢复时钟，在一个或多个数据流中检测出逻辑“1”，并确定数据相对于相控时钟的相位。 保持电路在逻辑“1”位间隔期间存储相位信息，并将相位信息与引导相位时钟对齐。 比较电路和计数器电路检测相位信息的变化，以确保变化不仅仅是亚稳异常的结果。 相位控制电路使用来自比较块的相位信息在相位时钟之间切换，以产生无毛刺的恢复时钟。 恢复的时钟由数据恢复电路用于使用恢复的时钟重新计算数据。 可以使用多抽头延迟线来从所选择的数据频率产生多个相控时钟信号，其中时钟恢复电路使用预定数量的多个相控时钟来响应于输入的频率产生恢复的时钟 数据。