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1. 发明公开

EP1921802A1 OPTICAL COMMUNICATION NETWORK SYSTEM, PARENT STATION OPTICAL COMMUNICATION DEVICE, AND CHILD STATION OPTICAL COMMUNICATION DEVICE 审中-公开
标题翻译：光通信网络系统，主站和从站的光通信设备的光通信装置
公开(公告)号：EP1921802A1
公开(公告)日：2008-05-14
申请号：EP06797050.9
申请日：2006-08-30
申请人： MITSUBISHI ELECTRIC CORPORATION , KDDI Corporation
发明人： NAKAGAWA, Junichi , TANAKA, Keiji , KUWAZURU, Masato , EDAGAWA, Noboru
IPC分类号： H04L12/44
CPC分类号： H04J14/0226 , H04J14/0227 , H04J14/0246 , H04J14/0247 , H04J14/0252 , H04J14/0282 , H04Q11/0067 , H04Q2011/0064 , H04Q2011/0069 , H04Q2011/009
摘要： In an optical communication network system, a central office and a plurality of user nodes are connected via an optical transmission path and a bidirectional communication is performed between the central office and the user nodes. The user nodes are divided into a plurality of groups. In a downstream channel communication, an individual downstream channel wavelength is allocated to each of the groups as a wavelength for a downstream communication, and for user nodes in a same group, the central office performs a downstream-signal communication by a same communication method using the individual downstream channel wavelength. In an upstream channel communication, all of the user nodes perform an upstream-signal communication with the central office using a single upstream channel wavelength as a wavelength for an upstream communication. A downstream signal from the central office is distributed to the groups for each individual downstream channel wavelength, and upstream signals from the user nodes are transmitted to the central office in a multiplexing manner.
摘要翻译：在光通信网络系统中，中心局和用户节点的多元性通过在光传输路径连接并进行双向通信是中心局和用户节点之间执行的。用户节点分成组的复数。在单个下行信道波长的下行信道的通信被分配给每个组的作为下行方向的通信的波长，以及在同一组的用户节点，该中心局通过一个相同的通信方法，使用进行下行信号的通信各个下行信道的波长。在上游信道通信中，所有的用户节点中的与中心局的上行信号的通信使用单个上游信道波长如在上游通信用于执行波长。从中心局的下行信号分配给所述组为每个单独的下行信道的波长，并且从用户节点上行信号为反式mitted到中心局以复用方式。

2. 发明授权

EP1931095B1 LIGHT RECEIVER AND ITS IDENTIFICATION THRESHOLD VALUE GENERATION METHOD 有权
标题翻译：光接收器和方法生产其身份门槛
公开(公告)号：EP1931095B1
公开(公告)日：2012-01-18
申请号：EP05788349.8
申请日：2005-09-28
申请人： Mitsubishi Electric Corporation
发明人： NOGAMI, Masamichi , NAKAGAWA, Junichi , NODA, Masaki , UO, Toyoaki
IPC分类号： H04B10/158 , H04L25/03 , H03G3/30 , H04L25/06
CPC分类号： H04L25/061 , H03G3/3084 , H04B10/6931 , H04B10/695
摘要： It is possible to prevent unintentional gain switching or erroneous identification level generation when a reception signal has a transient response in a light receiver for receiving a burst-shaped light signal. The light receiver includes a pre-amplification unit for converting an output current signal of the reception element into a voltage signal and amplifying it and an identification reproduction unit having an identification circuit for inputting an output signal of the pre-amplification unit and identifying a level of the input signal according to a predetermined threshold value. The pre-amplification unit includes a first average value detection circuit for detecting an average value of its output signal, so that its amplification gain is controlled according to a comparison output between the output of the first average value detection circuit and a predetermined reference voltage. Moreover, the identification reproduction unit includes a second average value detection circuit for detecting an average value of the input signal and the output of the second average value detection circuit is outputted as a threshold value for performing signal identification to the identification circuit.

3. 发明公开

EP2696519A1 OPTICAL RECEIVER 有权
标题翻译： OPTISCHEREMPFÄNGER
公开(公告)号：EP2696519A1
公开(公告)日：2014-02-12
申请号：EP11863096.1
申请日：2011-04-05
申请人： Mitsubishi Electric Corporation
发明人： NODA, Masaki , NOGAMI, Masamichi , NAKAGAWA, Junichi
IPC分类号： H04B10/04 , H04B10/06 , H04B10/14 , H04B10/26 , H04B10/28
CPC分类号： H04B10/6931 , H03G3/3084 , H04B10/693
摘要： The present invention is an optical receiver includes: a preamplifier (2) capable of changing a conversion gain in accordance with a reception level of a received burst signal; a gain control circuit (9) capable of switching between a fast time constant and a slow time constant; and a convergence determination circuit (10) for outputting a time constant switching signal (14) in accordance with a state of the gain control circuit (9) (transient state or steady state) and a reset signal between the burst signals. This configuration can switch the time constant of the gain control circuit (9) at an appropriate timing.
摘要翻译：本发明是一种光接收机，包括：前置放大器（2），能够根据所接收的脉冲串信号的接收电平来改变转换增益; 能够在快速时间常数和慢时间常数之间切换的增益控制电路（9）以及用于根据增益控制电路（9）的状态（瞬态或稳态）输出时间常数切换信号（14）和突发信号之间的复位信号的会聚判定电路（10）。该配置可以在适当的时刻切换增益控制电路（9）的时间常数。

4. 发明公开

EP2061177A1 DATA REPRODUCTION CIRCUIT 审中-公开
标题翻译： DATENWIEDERGABESCHALTUNG
公开(公告)号：EP2061177A1
公开(公告)日：2009-05-20
申请号：EP06797356.0
申请日：2006-09-04
申请人： Mitsubishi Electric Corporation
发明人： SUZUKI, Naoki , TAGAMI, Hitoyuki , NOGAMI, Masamichi , NAKAGAWA, Junichi
IPC分类号： H04L7/02 , H04J3/06
CPC分类号： H04L7/0338 , H04L7/04
摘要： Provided is a data recovery circuit including an input data phase detection circuit for outputting a gate signal synchronized with a rising phase of input data, a gated multiphase oscillator for instantly generating N-phase clocks based on the gate signal as a trigger, data discriminating and reproducing circuits for outputting sampled data of the input data which are synchronized with the clocks, a continuous clock generation circuit for generating a continuous clock which is a reference clock, continuous clock synchronization circuits for synchronizing the sampled data with the continuous clock and outputting the synchronized sampled data as phase synchronization data, and a phase selector for selecting the phase synchronization data having an optimum discrimination phase with the largest phase margin with respect to the input data and outputting the selected phase synchronization data as recovery data.
摘要翻译：提供了一种数据恢复电路，包括用于输出与输入数据的上升相位同步的门信号的输入数据相位检测电路，用于基于门信号作为触发立即生成N相时钟的门控多相振荡器，数据鉴别和用于输出与时钟同步的输入数据的采样数据的再现电路，用于产生作为参考时钟的连续时钟的连续时钟产生电路，用于使采样数据与连续时钟同步的连续时钟同步电路，并输出同步采样数据作为相位同步数据，以及相位选择器，用于相对于输入数据选择具有最大相位裕度的最佳鉴别相位的相位同步数据，并输出所选择的相位同步数据作为恢复数据。

5. 发明公开

EP2180613A1 POINT-TO-MULTIPOINT OPTICAL COMMUNICATION SYSTEM 审中-公开
标题翻译： OPTISCHES PUNKT-ZU-MEHRPUNKT-KOMMUNIKATIONSSYSTEM
公开(公告)号：EP2180613A1
公开(公告)日：2010-04-28
申请号：EP07790960.4
申请日：2007-07-18
申请人： Mitsubishi Electric Corporation
发明人： NAKAGAWA, Junichi , NOGAMI, Masamichi
IPC分类号： H04B10/20
CPC分类号： H04B10/272 , H04J14/0226 , H04J14/0227 , H04J14/0246 , H04J14/0247 , H04J14/025 , H04J14/0252 , H04J14/0279 , H04J14/0282
摘要： Provided is a point-to-multipoint optical communication system capable of extending a transmission distance between a subscriber apparatus and a station apparatus without changing wavelengths of an upstream optical signal and a downstream optical signal, which are used in both of the apparatuses. The point-to-multipoint optical communication system includes, as a basic configuration thereof, an optical network for connecting one station apparatus (1) to a plurality of (n) subscriber apparatuses (4). Among m basic configurations, one station-side wavelength multiplexer/demultiplexer (22), one optical fiber transmission line (30), and one subscriber-side wavelength multiplexer/demultiplexer (12) are shared. The point-to-multipoint optical communication system further includes a station-side repeating unit (20) and a subscriber-side repeating unit (10) each including the one wavelength multiplexer/demultiplexer (22 or 12) and m wavelength converters (21 or 11). An optical signal having a conventionally-used wavelength is used between the station apparatus (1) and the station-side repeating unit (20) and between the subscriber apparatus (4) and the subscriber-side repeating unit (10), and an extensible optical signal, on which wavelength division multiplexing has been performed, is used between the wavelength multiplexers/demultiplexers (12 and 22) via the optical fiber transmission line (30).
摘要翻译：提供了能够在不改变在两个装置中使用的上游光信号和下行光信号的波长的情况下扩展用户装置与站装置之间的传输距离的点对多点光通信系统。点对多点光通信系统包括作为其基本配置的用于将一个站设备（1）连接到多个（n）个用户设备（4）的光网络。在m个基本配置中，共享一个站侧波长多路复用器/解复用器（22），一个光纤传输线（30）和一个用户侧波长多路复用器/解复用器（12）。点对多点光通信系统还包括站侧重复单元（20）和用户侧重复单元（10），每个重复单元包括一个波长多路复用器/解复用器（22或12）和m个波长转换器（21或 11）。在站设备（1）和站侧重复单元（20）之间以及用户设备（4）和用户侧重复单元（10）之间使用具有常规使用波长的光信号，并且可扩展通过光纤传输线（30）在波分多路复用器/解复用器（12和22）之间使用已经执行了波分复用的光信号。

6. 发明授权

EP2696519B1 OPTICAL RECEIVER 有权
公开(公告)号：EP2696519B1
公开(公告)日：2018-07-04
申请号：EP11863096.1
申请日：2011-04-05
申请人： Mitsubishi Electric Corporation
发明人： NODA, Masaki , NOGAMI, Masamichi , NAKAGAWA, Junichi
IPC分类号： H04B10/69 , H04B10/29 , H04B10/60 , H03G3/30
CPC分类号： H04B10/6931 , H03G3/3084 , H04B10/693
摘要： The present invention is an optical receiver includes: a preamplifier (2) capable of changing a conversion gain in accordance with a reception level of a received burst signal; a gain control circuit (9) capable of switching between a fast time constant and a slow time constant; and a convergence determination circuit (10) for outputting a time constant switching signal (14) in accordance with a state of the gain control circuit (9) (transient state or steady state) and a reset signal between the burst signals. This configuration can switch the time constant of the gain control circuit (9) at an appropriate timing.

7. 发明授权

EP1971094B1 LIGHT RECEIVER 有权
标题翻译： LICHTEMPFÄNGER
公开(公告)号：EP1971094B1
公开(公告)日：2012-05-02
申请号：EP06715181.1
申请日：2006-03-03
申请人： MITSUBISHI ELECTRIC CORPORATION
发明人： NODA, Masaki , NOGAMI, Masamichi , NAKAGAWA, Junichi
IPC分类号： H03G3/30 , H04B10/158 , H03G3/00
CPC分类号： H03F3/08 , H03G3/001 , H03G3/3084 , H04B10/6931
摘要： A light receiver provided with a broad dynamic range characteristic in which different light receiving level packets can be stably reproduced, high speed response, and good same-code-continuation endurance. The light receiver is comprised of a light receiving element (1) for outputting an electric current in accordance with a light receiving level of an optical signal, a preamplifier (2) for converting the electric current output from the light receiving element to a voltage signal, a same-code-continuation detecting circuit (5) for detecting a same-code-continuation portion from a code train of the voltage signal output from the preamplifier and outputting a switching signal of time constants in response to its detecting result, a level detecting circuit (3) for detecting a voltage level of the voltage signal output from the preamplifier in response to the time constant switched and controlled by the switching signal of the time constant, and an amplifier (4) for amplifying an output voltage of the level detecting circuit and supplying the preamplifier with a control voltage to control a gain.

8. 发明授权

EP2096754B1 OPTICAL RECEIVER 有权
标题翻译：光接收机
公开(公告)号：EP2096754B1
公开(公告)日：2011-10-26
申请号：EP06842993.5
申请日：2006-12-21
申请人： Mitsubishi Electric Corporation
发明人： NODA, Masaki , NOGAMI, Masamichi , NAKAGAWA, Junichi
IPC分类号： H03G3/30 , H04B10/02 , H04B10/04 , H04B10/06 , H04B10/14 , H04B10/18 , H04B10/20
CPC分类号： H03G3/3084 , H04B10/6931 , H04B10/695
摘要： Provided is an optical receiver, which has wide dynamic range characteristics to reproduce burst signals of different light receiving levels stably and which is excellent in a high-speed responsiveness and in an identical code continuation resistance. The optical receiver comprises a preamplifier for converting an output from a light receiving element into a voltage signal, a level detecting circuit having a first level detecting unit of a short time constant and a second level detecting unit of a long time constant and switched to either of the level detecting units on the basis of a time constant switching signal thereby to detect the voltage level of the voltage signal outputted from the preamplifier, an amplifier for controlling the conversion gain of the preamplifier variably on the basis of the detection result, and time constant switching control means for outputting a time constant switching signal on the basis of the output voltage signal from the preamplifier. The time constant switching control circuit outputs the time constant switching signal to the level detecting means so that the first level detecting unit may be selected in case the identical code continuation number of the bit series of a packet of the burst signals received is smaller than a predetermined number, and so that the second level detecting unit may be selected in case the same is larger than a predetermined number.

9. 发明公开

EP2096754A1 OPTICAL RECEIVER 有权
标题翻译： OPTISCHEEMPFÄNGER
公开(公告)号：EP2096754A1
公开(公告)日：2009-09-02
申请号：EP06842993.5
申请日：2006-12-21
申请人： Mitsubishi Electric Corporation
发明人： NODA, Masaki , NOGAMI, Masamichi , NAKAGAWA, Junichi
IPC分类号： H03G3/30 , H04B10/02 , H04B10/04 , H04B10/06 , H04B10/14 , H04B10/18 , H04B10/20
CPC分类号： H03G3/3084 , H04B10/6931 , H04B10/695
摘要： 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.
摘要翻译：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。

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