公开(公告)号：US06754172B1

公开(公告)日：2004-06-22

申请号：US09723116

申请日：2000-11-27

申请人： Masayuki Tanaka ,  Masaki Kubo ,  Satoshi Nemoto ,  Shuji Sakakura ,  Shigeo Handa ,  Yuji Kamura

发明人： Masayuki Tanaka ,  Masaki Kubo ,  Satoshi Nemoto ,  Shuji Sakakura ,  Shigeo Handa ,  Yuji Kamura

IPC分类号： H04J306

CPC分类号： H04J3/0623 ,  H04J3/085 ,  H04J2203/0042 ,  H04J2203/006 ,  H04J2203/0096

摘要： A non-interruptive protection switching device which performs protection switching in a more efficient and robust way. The device has a working-channel signal storage unit to store data signals received through a working channel. Multiframe synchronization timings are detected by a working-channel multiframe synchronization controller, which provides a working-channel multiframe sync detection pulse signal when the main signals are in a normal condition and stops it when the channel is disrupted. A working-channel write controller controls every write access to the working-channel signal storage unit, generating a write pulse signal therefor. The working-channel write controller also produces working-channel write phase data by identifying a phase difference of the detected multiframe synchronization timing with respect to a reference phase signal. The generation of this write pulse signal is based on the multiframe sync detection pulse signal when the working-channel multiframe sync detection pulse signal is available, or on a free-running timebase when it is stopped. The stored data in the working- and protection-channel signal storage units are read out simultaneously, under the control of a read controller which produces read pulses from the write phase data.

摘要翻译： 一种非中断保护切换装置，以更有效和鲁棒的方式进行保护倒换。 该设备具有工作信道信号存储单元，用于存储通过工作信道接收的数据信号。 多帧同步定时由工作信道复帧同步控制器检测，当主信号处于正常状态时，该帧同步控制器提供工作信道复帧同步检测脉冲信号，并在通道中断时停止。 工作通道写入控制器控制对工作通道信号存储单元的每个写入访问，产生写入脉冲信号。 工作通道写入控制器还通过相对于参考相位信号识别检测到的多帧同步定时的相位差来产生工作通道写入相位数据。 当工作信道复帧同步检测脉冲信号可用时，或者在停止时的自由运行时基上，该写入脉冲信号的产生基于多帧同步检测脉冲信号。 工作和保护通道信号存储单元中存储的数据在读写控制器的控制下被同时读出，读控制器从写相位数据产生读脉冲。

公开(公告)号：US06400614B1

公开(公告)日：2002-06-04

申请号：US09903004

申请日：2001-07-11

申请人： Masaki Hiromori ,  Seiji Matsuzaki ,  Toshiaki Asai ,  Yoshinari Oshio ,  Masato Hashizume ,  Megumi Shibata ,  Yuji Kamura

发明人： Masaki Hiromori ,  Seiji Matsuzaki ,  Toshiaki Asai ,  Yoshinari Oshio ,  Masato Hashizume ,  Megumi Shibata ,  Yuji Kamura

IPC分类号： G11C700

CPC分类号： G06F5/12

摘要： A transmission device and an integrated circuit improved in quality and reliability of digital transmission control. A memory stores an input signal, write address generating means generates a write address for writing in the memory, and read address generating means generates a read address for reading from the memory. Phase state monitoring means monitors a transition from a steady phase state in which writing/reading in/from the memory is normally performed or from a startup state to a coincident phase state in which address values of the write and read addresses coincide with each other or to an unstable phase state in which a phase fluctuation margin is one-sided. When the coincident phase state or the unstable phase state is detected, reset signal output means outputs a reset signal to the write and read address generating means such that the phase relation between the write and read addresses is brought to an optimum phase relation.

摘要翻译： 一种传输设备和集成电路，提高了数字传输控制的质量和可靠性。 存储器存储输入信号，写入地址产生装置产生用于在存储器中写入的写入地址，并且读取地址产生装置产生用于从存储器读取的读取地址。 相位状态监视装置监视从正常执行存储器/从存储器的写入/读取或从启动状态到写入和读取地址的地址值彼此一致的一致相位状态的稳定相位状态的转变，或者 到相位波动幅度是单向的不稳定相位状态。 当检测到重合相位状态或不稳定相位状态时，复位信号输出装置向写和读地址产生装置输出复位信号，使得写入和读出地址之间的相位关系达到最佳相位关系。

公开(公告)号：US07174108B2

公开(公告)日：2007-02-06

申请号：US10099965

申请日：2002-03-19

申请人： Yuji Kamura

发明人： Yuji Kamura

IPC分类号： H04B10/02

CPC分类号： H04B10/2918 ,  H04B10/0777 ,  H04B10/2916 ,  H04B2210/075 ,  H04B2210/08

摘要： A transmission system is provided that recognizes occurrence of a fault efficiently so that the workability and quality of service can be improved. An optical amplifier part amplifies an optical main signal. A fault occurrence recognizing part detects a pump light used for an opposing device via an optical fiber transmission line to which an optical main signal is sent by the repeater. If the pump light is not detected, the fault occurrence recognizing part recognizes occurrence of a fault. A light cutoff control part stops the optical amplifying part outputting an amplified signal so that the light cutoff control in only one of two directions is performed when a fault occurs.

摘要翻译： 提供了能够有效地识别故障的发生的传输系统，从而可以提高可操作性和服务质量。 光学放大器部分放大光学主信号。 故障发生识别部分经由中继器发送光信号的光纤传输线检测用于相对设备的泵浦光。 如果没有检测到泵浦光，则故障发生识别部件识别故障的发生。 光截止控制部分停止输出放大信号的光放大部分，使得当发生故障时仅执行两个方向中的一个方向的光切断控制。