公开(公告)号：US08467684B2

公开(公告)日：2013-06-18

申请号：US13053827

申请日：2011-03-22

申请人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima ,  Akihiko Tsuchiya ,  Yoshinobu Morita

发明人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima ,  Akihiko Tsuchiya ,  Yoshinobu Morita

IPC分类号： H04B14/00 ,  H04B10/272

CPC分类号： H04B10/272 ,  H04J3/0682 ,  H04J3/1694

摘要： In a light reception element such as an APD (Avalanche Photo Diode) used for receiving a high-speed and weak optical signal, it is possible to prevent the phenomenon of distortion of a signal inputted after a large-level light is received. A PON (Passive Optical Network) system includes an OLT (Optical Line Terminal) which can impartially and effectively transmit light reception data to each ONU (Optical Network Unit). According to a light reception amplitude received by each ONU, an inter-frame gap of an appropriate length is assigned for each ONU. The OLT includes a unit for measuring and accumulating the reception light amplitude and data on the inter-frame gap of an appropriate length decided in advance according to the characteristic of the light reception device and generates a grant value for assuring an inter-frame gap of an appropriate length by using the both information.

公开(公告)号：US07725031B2

公开(公告)日：2010-05-25

申请号：US12254566

申请日：2008-10-20

申请人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima ,  Norihiro Sakamoto

发明人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima ,  Norihiro Sakamoto

IPC分类号： H04J14/00

CPC分类号： H04J3/1694 ,  H04J3/0682

摘要： A station-side communication device connected to subscriber-side communication devices via an optical combining device; sending, to the subscriber-side communication devices, a distance measurement request signal; computing transmission delay times of optical signals from the individual subscriber-side communication devices by receiving distance measurement signals, and including: a threshold control part identifying the level of distance measurement signals; a signal detection part detecting breaks in the distance measurement signals from the threshold control part; a transmission granting part determining the timing at which transmission of optical signals is granted, and a reset timing generation part that, there is notification of detection of a break in the distance measurement signal from the signal detection part while it is being notified that distance measurement is carried out to and from the subscriber-side communication devices from the transmission granting part, sends a reset signal indicating that the voltage level is reset to the threshold control part.

摘要翻译： 经由光合成装置与用户侧通信装置连接的站侧通信装置; 向所述用户侧通信设备发送距离测量请求信号; 通过接收距离测量信号来计算来自各个用户侧通信设备的光信号的传输延迟时间，并且包括：阈值控制部分，识别距离测量信号的电平; 信号检测部检测来自阈值控制部的距离测量信号的中断; 确定光信号的发送的定时的发送准许部分，以及在通知距离测量的情况下，存在来自信号检测部的距离测量信号中断的检测通知的复位定时生成部 向来自发送授权部分的用户侧通信设备执行，将表示电压电平复位的复位信号发送到阈值控制部分。

公开(公告)号：US07548694B2

公开(公告)日：2009-06-16

申请号：US11730010

申请日：2007-03-29

申请人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima ,  Akihiko Tsuchiya ,  Yoshinobu Morita

发明人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima ,  Akihiko Tsuchiya ,  Yoshinobu Morita

IPC分类号： H04B10/20 ,  H04B14/00

CPC分类号： H04B10/272 ,  H04J3/0682 ,  H04J3/1694

摘要： In a light reception element such as an APD (Avalanche Photo Diode) used for receiving a high-speed and weak optical signal, it is possible to prevent the phenomenon of distortion of a signal inputted after a large-level light is received. A PON (Passive Optical Network) system includes an OLT (Optical Line Terminal) which can impartially and effectively transmit light reception data to each ONU (Optical Network Unit). According to a light reception amplitude received by each ONU, an inter-frame gap of an appropriate length is assigned for each ONU. The OLT includes a unit for measuring and accumulating the reception light amplitude and data on the inter-frame gap of an appropriate length decided in advance according to the characteristic of the light reception device and generates a grant value for assuring an inter-frame gap of an appropriate length by using the both information.

摘要翻译： 在用于接收高速和弱光信号的APD（雪崩光电二极管）等光接收元件中，可以防止在接收到大电平光之后输入的信号的失真现象。 PON（Passive Optical Network，无源光网络）系统包括能够向每个ONU（Optical Network Unit，光网络单元）公正地有效地发送光接收数据的OLT（Optical Line Terminal）。 根据每个ONU接收的光接收幅度，为每个ONU分配适当长度的帧间间隔。 OLT包括用于根据光接收装置的特性预先确定的适当长度的帧间隙上的接收光幅度和数据的测量和累加单元，并生成用于确保帧间间隔的帧间间隔的准许值 通过使用这两个信息适当的长度。

公开(公告)号：US07512341B2

公开(公告)日：2009-03-31

申请号：US12185560

申请日：2008-08-04

申请人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima ,  Norihiro Sakamoto

发明人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima ,  Norihiro Sakamoto

IPC分类号： H04J14/00

CPC分类号： H04J3/1694 ,  H04J3/0682

摘要： A station-side communication device connected to subscriber-side communication devices via an optical combining device; sending, to the subscriber-side communication devices, a distance measurement request signal; computing transmission delay times of optical signals from the individual subscriber-side communication devices by receiving distance measurement signals, and including: a threshold control part identifying the level of distance measurement signals; a signal detection part detecting breaks in the distance measurement signals from the threshold control part; a transmission granting part determining the timing at which transmission of optical signals is granted, and a reset timing generation part that, there is notification of detection of a break in the distance measurement signal from the signal detection part while it is being notified that distance measurement is carried out to and from the subscriber-side communication devices from the transmission granting part, sends a reset signal indicating that the voltage level is reset to the threshold control part.

摘要翻译： 经由光合成装置与用户侧通信装置连接的站侧通信装置; 向所述用户侧通信设备发送距离测量请求信号; 通过接收距离测量信号来计算来自各个用户侧通信设备的光信号的传输延迟时间，并且包括：阈值控制部分，识别距离测量信号的电平; 信号检测部检测来自阈值控制部的距离测量信号的中断; 确定光信号的发送的定时的发送准许部分，以及在通知距离测量的情况下，存在来自信号检测部的距离测量信号中断的检测通知的复位定时生成部 向来自发送授权部分的用户侧通信设备执行，将表示电压电平复位的复位信号发送到阈值控制部分。

公开(公告)号：US06169754A

公开(公告)日：2001-01-02

申请号：US08863675

申请日：1997-05-27

申请人： Toshiki Sugawara ,  Masaki Ohira ,  Yukio Nakano ,  Takashi Mori

发明人： Toshiki Sugawara ,  Masaki Ohira ,  Yukio Nakano ,  Takashi Mori

IPC分类号： H04J304

CPC分类号： H04J3/1611 ,  H04J2203/0057 ,  H04J2203/0089 ,  H04Q11/0478

摘要： In a synchronous multiplex network including a plurality of multiplex transmission apparatuses, an overhead is passed through intervening multiplex transmission apparatuses such that administration and maintenance operation information is transmitted and received through the overhead between arbitrary multiplex transmission apparatuses. The multiplex transmission apparatus receives a multiplexed signal comprising a payload having a plurality of main signals multiplexed therein and overhead bytes including a plurality of administration and maintenance operation information, performs termination processing for the administration and maintenance operation information and transmission processing for the payload, thereafter converts the multiplexed signal into a different multiplexed signal comprising a payload which has been processed for transmission and a plurality of administration and maintenance operation information, and transmits the different multiplexed signal.

摘要翻译： 在包括多个多路传输装置的同步多路复用网络中，通过中间多路复用传输装置进行开销，从而通过任意多路复用传输装置之间的开销发送和接收管理和维护操作信息。 多路复用发送装置接收包含多路复用的多个主信号的有效载荷和包含多个管理维护操作信息的开销字节的多路复用信号，执行管理和维护操作信息的终止处理以及有效负载的发送处理 将多路复用的信号转换为包括已经被处理以进行传输的有效载荷和多个管理和维护操作信息的不同复用信号，并发送不同的复用信号。

公开(公告)号：US08675870B2

公开(公告)日：2014-03-18

申请号：US11896476

申请日：2007-08-31

申请人： Masaki Ohira ,  Norihiro Sakamoto

发明人： Masaki Ohira ,  Norihiro Sakamoto

IPC分类号： H04K1/00 ,  H04L29/06

CPC分类号： H04L63/0428

摘要： There is provided an encryption apparatus including an idle data inserting unit that takes input of a frame including a fixed-length header and a variable-length payload and an encrypting unit that receives an output of the idle data inserting unit. If the length of a block to be processed, included in the payload, is less than a predetermined value, the idle data inserting unit appends idle data following the block and transmits the frame including the block padded with the idle data to the encrypting unit.

摘要翻译： 提供了一种加密装置，包括空闲数据插入单元，其接收包括固定长度头部和可变长度有效载荷的帧的输入，以及接收空闲数据插入单元的输出的加密单元。 如果包含在有效负载中的要处理的块的长度小于预定值，则空闲数据插入单元在块之后附加空闲数据，并将包括填充有空闲数据的块的帧发送到加密单元。

公开(公告)号：US20120093509A1

公开(公告)日：2012-04-19

申请号：US13378281

申请日：2009-06-16

申请人： Tohru Kazawa ,  Norihiro Sakamoto ,  Masaki Ohira

发明人： Tohru Kazawa ,  Norihiro Sakamoto ,  Masaki Ohira

IPC分类号： H04B10/20

CPC分类号： H04L12/44 ,  H04B10/272 ,  H04J14/021 ,  H04J14/0221 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0256 ,  H04J14/0258 ,  H04J14/026 ,  H04J14/0273 ,  H04J14/0282 ,  H04L12/66 ,  H04Q11/0062 ,  H04Q2011/0079

摘要： Provided is a passive optical network system, wherein the electric power to be consumed is reduced on the basis of the quantity of signal to be transmitted downstream in a WDM-PON where signals having different transmission rates for wavelengths are mixed. In the passive optical network system, an OLT (200) and a plurality of ONUes (300) are connected by an optical fiber network including an optical splitter (100) and a plurality of optical fibers (110 and 120). The OLT (200) indicates to the ONUes (300) the wavelength to be used, in addition to the timing for transmission to the ONUes (300). A format for signal transmission from the OLT (200) to the ONUes (300) comprises both the region, in which the timing for transmission to the ONUes (300) indicated by the OLT (200) to the ONUes (300) is stored, and the region, by which the wavelength to be used in the communication in the direction from the OLT (200) to the ONUes (300) is indicated.

摘要翻译： 本发明提供一种无源光网络系统，其中，根据在波分复用传输速率不同的信号的WDM-PON中下行发送的信号量，可以减少要消耗的电力。 在无源光网络系统中，OLT（200）和多个ONU（300）通过包括光分路器（100）和多个光纤（110和120）的光纤网络连接。 OLT（200）除了发送到ONU（300）的定时之外，还向ONU（300）指示要使用的波长。 从OLT（200）到ONU（300）的信号传输的格式包括其中存储由OLT（200）指示的ONU（300）向ONU（300）指示的ONU（300）的发送定时的区域， 并且指示在从OLT（200）到ONU（300）的方向上的通信中使用的波长的区域。

公开(公告)号：US20110170871A1

公开(公告)日：2011-07-14

申请号：US13053827

申请日：2011-03-22

申请人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima ,  Akihiko Tsuchiya ,  Yoshinobu Morita

发明人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima ,  Akihiko Tsuchiya ,  Yoshinobu Morita

IPC分类号： H04J14/00

CPC分类号： H04B10/272 ,  H04J3/0682 ,  H04J3/1694

摘要： In a light reception element such as an APD (Avalanche Photo Diode) used for receiving a high-speed and weak optical signal, it is possible to prevent the phenomenon of distortion of a signal inputted after a large-level light is received. A PON (Passive Optical Network) system includes an OLT (Optical Line Terminal) which can impartially and effectively transmit light reception data to each ONU (Optical Network Unit). According to a light reception amplitude received by each ONU, an inter-frame gap of an appropriate length is assigned for each ONU. The OLT includes a unit for measuring and accumulating the reception light amplitude and data on the inter-frame gap of an appropriate length decided in advance according to the characteristic of the light reception device and generates a grant value for assuring an inter-frame gap of an appropriate length by using the both information.

摘要翻译： 在用于接收高速和弱光信号的APD（雪崩光电二极管）等光接收元件中，可以防止在接收到大电平光之后输入的信号的失真现象。 PON（Passive Optical Network，无源光网络）系统包括能够向每个ONU（Optical Network Unit，光网络单元）公正地有效地发送光接收数据的OLT（Optical Line Terminal）。 根据每个ONU接收的光接收幅度，为每个ONU分配适当长度的帧间间隔。 OLT包括用于根据光接收装置的特性预先确定的适当长度的帧间隙上的接收光幅度和数据的测量和累加单元，并生成用于确保帧间间隔的帧间间隔的准许值 通过使用这两个信息适当的长度。

公开(公告)号：US07711268B2

公开(公告)日：2010-05-04

申请号：US12254590

申请日：2008-10-20

申请人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima ,  Norihiro Sakamoto

发明人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima ,  Norihiro Sakamoto

IPC分类号： H04J14/00

CPC分类号： H04J3/1694 ,  H04J3/0682

摘要： A station-side communication device connected to subscriber-side communication devices via an optical combining device; sending, to the subscriber-side communication devices, a distance measurement request signal; computing transmission delay times of optical signals from the individual subscriber-side communication devices by receiving distance measurement signals, and including: a threshold control part identifying the level of distance measurement signals; a signal detection part detecting breaks in the distance measurement signals from the threshold control part; a transmission granting part determining the timing at which transmission of optical signals is granted, and a reset timing generation part that, there is notification of detection of a break in the distance measurement signal from the signal detection part while it is being notified that distance measurement is carried out to and from the subscriber-side communication devices from the transmission granting part, sends a reset signal indicating that the voltage level is reset to the threshold control part.

公开(公告)号：US20090214211A1

公开(公告)日：2009-08-27

申请号：US12434959

申请日：2009-05-04

申请人： Tohru KAZAWA ,  Masaki OHIRA ,  Yusuke YAJIMA ,  Akihiko TSUCHIYA ,  Yoshinobu MORITA

发明人： Tohru KAZAWA ,  Masaki OHIRA ,  Yusuke YAJIMA ,  Akihiko TSUCHIYA ,  Yoshinobu MORITA

IPC分类号： H04J14/00

CPC分类号： H04B10/272 ,  H04J3/0682 ,  H04J3/1694

摘要： In a light reception element such as an APD (Avalanche Photo Diode) used for receiving a high-speed and weak optical signal, it is possible to prevent the phenomenon of distortion of a signal inputted after a large-level light is received. A PON (Passive Optical Network) system includes an OLT (Optical Line Terminal) which can impartially and effectively transmit light reception data to each ONU (Optical Network Unit). According to a light reception amplitude received by each ONU, an inter-frame gap of an appropriate length is assigned for each ONU. The OLT includes a unit for measuring and accumulating the reception light amplitude and data on the inter-frame gap of an appropriate length decided in advance according to the characteristic of the light reception device and generates a grant value for assuring an inter-frame gap of an appropriate length by using the both information.

摘要翻译： 在用于接收高速和弱光信号的APD（雪崩光电二极管）等光接收元件中，可以防止在接收到大电平光之后输入的信号的失真现象。 PON（Passive Optical Network，无源光网络）系统包括能够向每个ONU（Optical Network Unit，光网络单元）公正地有效地发送光接收数据的OLT（Optical Line Terminal）。 根据每个ONU接收的光接收幅度，为每个ONU分配适当长度的帧间间隔。 OLT包括用于根据光接收装置的特性预先确定的适当长度的帧间隙上的接收光幅度和数据的测量和累加单元，并生成用于确保帧间间隔的帧间间隔的准许值 通过使用这两个信息适当的长度。