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    • 21. 发明公开
    • OPTICAL RECEIVER
    • OPTISCHEEMPFÄNGER
    • EP2096754A1
    • 2009-09-02
    • EP06842993.5
    • 2006-12-21
    • Mitsubishi Electric Corporation
    • NODA, MasakiNOGAMI, MasamichiNAKAGAWA, Junichi
    • H03G3/30H04B10/02H04B10/04H04B10/06H04B10/14H04B10/18H04B10/20
    • H03G3/3084H04B10/6931H04B10/695
    • Provided is an optical receiver, which has a wide-dynamic range characteristic to stably reproduce a burst signal having different light receiving levels and which is excellent in high-speed response with long consecutive identical digit signals. The optical receiver includes: a preamplifier for converting an output from a light receiving element into a voltage signal; a level detecting circuit including: a first level detecting unit having a short time constant; and a second level detecting unit having a long time constant and switching over to any one of the level detecting units in response to a time constant switching signal to detect a voltage level of an output voltage signal output from the preamplifier; an amplifier for variably controlling a conversion gain of the preamplifier based on a result by the detecting; and time constant switching control means for outputting the time constant switching signal based on the output voltage signal from the preamplifier. The time constant switching control means outputs the time constant switching signal to the level detecting means so as to select, when a number of consecutive identical digits of a bit string of a packet of a received burst signal is smaller than a predetermined number, the first level detecting unit, and so as to select, when the number of consecutive identical digits is equal to or larger than the predetermined number, the second detecting unit.
    • 提供了具有宽动态范围特性的光接收机,以稳定地再现具有不同光接收电平的突发信号,并且具有优异的具有长连续相同数字信号的高速响应。 光接收器包括:前置放大器,用于将来自光接收元件的输出转换成电压信号; 电平检测电路,包括:具有短时间常数的第一电平检测单元; 以及具有长时间常数的第二电平检测单元,并且响应于时间常数切换信号切换到电平检测单元中的任何一个,以检测从前置放大器输出的输出电压信号的电压电平; 放大器,用于基于检测的结果可变地控制前置放大器的转换增益; 以及时间常数切换控制装置,用于根据来自前置放大器的输出电压信号输出时间常数切换信号。 时间常数切换控制装置将时间常数切换信号输出到电平检测装置,以便当接收到的脉冲串信号的分组的比特串的连续相同数字的数目小于预定数量时,选择第一 电平检测单元,并且当连续相同数字的数量等于或大于预定数量时,选择第二检测单元。
    • 23. 发明公开
    • AN OPTICAL TRANSPORT NODE CONSTRUCTION DEVICE AND SERVICE DISPATCH METHOD
    • 美国运动员运动员奥斯汀
    • EP1971050A1
    • 2008-09-17
    • EP06817918.3
    • 2006-11-28
    • Huawei Technologies Co., Ltd.
    • ZHANG, JianmeiJIN, YuzhiHUANG, Zhiyong
    • H04B10/02H04L12/40H04J14/02
    • H04J3/1611H04J3/167H04J2203/0008H04J2203/0073H04Q11/0062H04Q2011/0064H04Q2011/0084
    • An optical transport network node construction device and service dispatch method, include: the dispatch unit is the integration dispatch unit, which contains the large capacity transparent cross unit and one or multiple dedicated cross units connected to the transparent cross unit, the large capacity transparent cross unit accesses the service, performs cross configuration directly or dispatches the service to the connected dedicated cross units for further processing based on the configuration need of the access service, dispatches the signal processed to the requested output port, and provides it for the service process unit and the (WDM) process unit to perform the continued process. The invention realizes the organic interfusion of the original independent (SDH) and (OTN) devices, adapts the coexist application situation of the voice service and the large particle data service currently, sets the uniform bus construction which can be configured to different combinations to adapt different client requests respectively, and interfuses the (SDH/SONET) system and the (WDM) system together to realize the uniform management.
    • 光传输网络节点施工装置和服务调度方法包括:调度单元是集成调度单元,包含大容量透明交叉单元和连接到透明交叉单元的一个或多个专用交叉单元,大容量透明交叉 单元访问服务,直接执行交叉配置或者将服务分派到所连接的专用交叉单元,以便基于访问服务的配置需要进行进一步处理,将处理的信号调度到所请求的输出端口,并将其提供给服务处理单元 和(WDM)处理单元执行持续处理。 本发明实现了原有独立(SDH)和(OTN)设备的有机接口,适应了语音业务和大型粒子数据业务的共存应用情况,设定了可以配置为不同组合的统一总线结构,以适应 不同的客户端请求,并将(SDH / SONET)系统和(WDM)系统结合在一起,实现统一管理。
    • 26. 发明公开
    • SYSTEM AND METHOD FOR SUBCARRIER MODULATION IN ISM BAND AS SUPERVISORY CHANNEL
    • SYSTEM UND VERFAHREN ZURSUBTRÄGERMODULATIONIM ISM-BAND ALS BEAUFSICHTIGUNGSKANAL
    • EP1741209A4
    • 2007-05-09
    • EP05745225
    • 2005-04-30
    • HUAWEI TECH CO LTD
    • BAI YU SHENG
    • H04B10/00H04B10/02H04B10/08H04J14/02
    • H04J14/0298H04B10/0775H04B2210/078H04J14/0279H04J14/0287
    • Apparatus and method for transmitting a supervisory signal for optical network applications. The apparatus includes a subcarrier transmission system configured to receive a first supervisory signal and output a second supervisory signal, and an electrical-to-optical conversion system configured to receive the second supervisory signal and a data signal and output an optical signal. The second supervisory signal is associated with a subcarrier frequency. The data signal is associated with a data bandwidth, and the data bandwidth includes a data frequency. At the data frequency, a power density of the data signal is substantially equal to zero. A ratio of the subcarrier frequency to the data frequency ranges from 0.8 to 1, and the subcarrier frequency ranges from 2.4 GHz to 2.483 GHz.
    • 用于为光网络应用传送监控信号的设备和方法。 该装置包括被配置为接收第一监控信号并输出​​第二监控信号的副载波传输系统以及被配置为接收第二监控信号和数据信号并输出​​光信号的电光转换系统。 第二监控信号与副载波频率相关联。 数据信号与数据带宽相关联,并且数据带宽包括数据频率。 在数据频率下,数据信号的功率密度基本上等于零。 子载波频率与数据频率之比为0.8至1,副载波频率范围为2.4GHz至2.483GHz。