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1. 发明授权

US08139950B2 Passive optical network system, optical line terminator and, communication method of passive optical network system 有权
标题翻译：无源光网络系统，光线路终端器，无源光网络系统通信方式
公开(公告)号：US08139950B2
公开(公告)日：2012-03-20
申请号：US12121229
申请日：2008-05-15
申请人： Masao Niibe , Tohru Kazawa , Yusuke Yajima , Takeshi Kiyose , Masahiko Mizutani
发明人： Masao Niibe , Tohru Kazawa , Yusuke Yajima , Takeshi Kiyose , Masahiko Mizutani
IPC分类号： H04B10/00 , H04J14/00 , H04J4/00 , H04J14/08
CPC分类号： H04Q11/0067 , H04Q2011/0064 , H04Q2011/0084
摘要： A passive optical network system (PON) has a plurality of OLTs and ONUs with different transmission rates. OLTs with different transmission rates share information of priority frames and destinations, and determine timing for frame transmission to ONUs so that the signal from each of the OLTs does not collide when multiplied in a splitter. OLTs transmit the data to the ONU as a burst signal to prevent the signals with different rates from colliding. ONU acquires the information of the following burst frames. ONU receives only the signal addressed to the own ONU or with the transmission rate of own ONU, therefore errors in ONUs can be avoided. OLT receives only the signal with the transmission rate of own OLT from ONUs based on the transmission timing from the ONUs shared by the line terminators, errors in OLTs can be avoided.
摘要翻译：无源光网络系统（PON）具有多个具有不同传输速率的OLT和ONU。具有不同传输速率的OLT共享优先级帧和目的地的信息，并确定向ONU发送帧的定时，使得来自每个OLT的信号在分离器中相乘时不会发生冲突。 OLT将数据作为突发信号发送到ONU，以防止具有不同速率的信号相互冲突。 ONU获取以下突发帧的信息。 ONU仅接收寻址到自己的ONU的信号或以自己的ONU的传输速率，因此可以避免ONU中的错误。基于来自线路终端机共享的ONU的传输定时，OLT仅从ONU接收到自身OLT的传输速率的信号，可以避免OLT中的错误。

2. 发明申请

US20090202242A1 PASSIVE OPTICAL NETWORK SYSTEM, OPTICAL LINE TERMINATOR AND, COMMUNICATION METHOD OF PASSIVE OPTICAL NETWORK SYSTEM 有权
标题翻译：被动光网络系统，光线路终端和被动光网络系统的通信方法
公开(公告)号：US20090202242A1
公开(公告)日：2009-08-13
申请号：US12121229
申请日：2008-05-15
申请人： Masao NIIBE , Tohru Kazawa , Yusuke Yajima , Takeshi Kiyose , Masahiko Mizutani
发明人： Masao NIIBE , Tohru Kazawa , Yusuke Yajima , Takeshi Kiyose , Masahiko Mizutani
IPC分类号： H04J14/00
CPC分类号： H04Q11/0067 , H04Q2011/0064 , H04Q2011/0084
摘要： A passive optical network system (PON) has a plurality of OLTs and ONUs with different transmission rates. OLTs with different transmission rates share information of priority frames and destinations, and determine timing for frame transmission to ONUs so that the signal from each of the OLTs does not collide when multiplied in a splitter. OLTs transmit the data to the ONU as a burst signal to prevent the signals with different rates from colliding. ONU acquires the information of the following burst frames. ONU receives only the signal addressed to the own ONU or with the transmission rate of own ONU, therefore errors in ONUs can be avoided. OLT receives only the signal with the transmission rate of own OLT from ONUs based on the transmission timing from the ONUs shared by the line terminators, errors in OLTs can be avoided.
摘要翻译：无源光网络系统（PON）具有多个具有不同传输速率的OLT和ONU。具有不同传输速率的OLT共享优先级帧和目的地的信息，并确定向ONU发送帧的定时，使得来自每个OLT的信号在分离器中相乘时不会发生冲突。 OLT将数据作为突发信号发送到ONU，以防止具有不同速率的信号相互冲突。 ONU获取以下突发帧的信息。 ONU仅接收寻址到自己的ONU的信号或以自己的ONU的传输速率，因此可以避免ONU中的错误。基于来自线路终端机共享的ONU的传输定时，OLT仅从ONU接收到自身OLT的传输速率的信号，可以避免OLT中的错误。

3. 发明授权

US07936992B2 Apparatus of adjusting optical signal transmission timing 有权
标题翻译：调整光信号传输定时的装置
公开(公告)号：US07936992B2
公开(公告)日：2011-05-03
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。

4. 发明申请

US20090169209A1 Network system, optical line terminating apparatus, and optical network apparatus 有权
标题翻译：网络系统，光线路终端装置和光网络装置
公开(公告)号：US20090169209A1
公开(公告)日：2009-07-02
申请号：US12073949
申请日：2008-03-12
申请人： Toshiki Sugawara , Hiroki Ikeda , Yusuke Yajima , Tohru Kazawa
发明人： Toshiki Sugawara , Hiroki Ikeda , Yusuke Yajima , Tohru Kazawa
IPC分类号： H04J14/00
CPC分类号： H04B10/27 , H04B10/272 , H04J3/0682
摘要： A general object of the present invention is to provide an optical communication system in which an optical transmission power of an optical communication apparatus is controlled to be a required minimum power that apparatuses of all subscribers in the optical communication system meet a prescribed error rate. An optical line terminating apparatus (OLT) transmits data to multiple optical network apparatuses (ONUs) at an optical intensity calculated based on information acquired from the multiple ONUs, which is related to optical intensities of signals that the multiple ONUs receive from the OLT, the optical intensity being calculated so that a minimum optical intensity of the optical intensities of the signals is greater than a predetermined value.
摘要翻译：本发明的一般目的是提供一种光通信系统，其中光通信装置的光传输功率被控制为光通信系统中所有用户的设备满足规定的错误率所需的最小功率。光线路终端装置（OLT）以基于从多个ONU获取的信息计算出的光强度向多个光网络装置（ONU）发送数据，其与多个ONU从OLT接收的信号的光强度相关，计算光强度，使得信号的光强度的最小光强度大于预定值。

5. 发明申请

US20090052896A1 PASSIVE OPTICAL NETWORK SYSTEM AND RANGING SYSTEM THEREOF 有权
标题翻译：被动光网络系统及其系统
公开(公告)号：US20090052896A1
公开(公告)日：2009-02-26
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： H04B10/20
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。

6. 发明授权

US07489869B2 Passive optical network system and ranging system thereof 失效
公开(公告)号：US07489869B2
公开(公告)日：2009-02-10
申请号：US11729974
申请日：2007-03-30
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.

7. 发明申请

US20080089686A1 Passive optical network system and ranging system thereof 失效
标题翻译：无源光网络系统及其测距系统
公开(公告)号：US20080089686A1
公开(公告)日：2008-04-17
申请号：US11729974
申请日：2007-03-30
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。

8. 发明授权

US07239813B2 Bit synchronization circuit and central terminal for PON systems 有权
标题翻译：用于PON系统的位同步电路和中心终端
公开(公告)号：US07239813B2
公开(公告)日：2007-07-03
申请号：US10654613
申请日：2003-09-04
申请人： Yusuke Yajima , Toshihiro Ashi , Tohru Kazawa
发明人： Yusuke Yajima , Toshihiro Ashi , Tohru Kazawa
IPC分类号： H04B10/00
CPC分类号： H04L7/0338 , H04J3/062 , H04L7/046 , H04L25/061
摘要： A bit synchronization circuit composed of a multiphase data sampling unit for converting each received burst data sets to multiphase data trains, a phase determination unit for generating a control signal indicating an optimum phase data train, an output data selector for selectively passing optimum phase data train indicated by the control signal, and a data synchronization unit for converting the optimum phase data train to a data train in synchronization with a reference clock. The phase determination unit repeatedly detecting the optimum phase data train during the same burst data set is received. When optimum phase varies, the output data selector dynamically switches the optimum phase data train to be supplied to the data synchronization unit.
摘要翻译：一种由多相数据采样单元组成的位同步电路，用于将每个接收到的脉冲串数据组转换为多相数据串;相位确定单元，用于产生指示最佳相位数据列的控制信号;输出数据选择器，用于选择性地通过最佳相位数据列由控制信号指示的数据同步单元，用于将最佳相位数据序列与参考时钟同步地转换为数据列。接收在相同突发数据组中反复检测最佳相位数据序列的相位确定单元。当最佳相位变化时，输出数据选择器动态切换要提供给数据同步单元的最佳相位数据序列。

9. 发明申请

US20070030937A1 Bit synchronization circuit with phase tracking function 失效
标题翻译：位同步电路具有相位跟踪功能
公开(公告)号：US20070030937A1
公开(公告)日：2007-02-08
申请号：US11299819
申请日：2005-12-13
申请人： Yusuke Yajima , Tohru Kazawa , Yoshihiro Ashi
发明人： Yusuke Yajima , Tohru Kazawa , Yoshihiro Ashi
IPC分类号： H03D3/24
CPC分类号： H04L7/0337 , H03L7/0814 , H03L7/087 , H03L7/091 , H04L7/0004 , H04L7/046
摘要： A bit synchronization circuit comprising an initial phase determining unit for rapidly determining, during a period of receiving a preamble of burst data, a clock with a phase synchronized with received burst data from among multi-phase clocks having the same frequency as an internal reference clock and a phase tracking unit for modifying the synchronized phase clock responsive to phase variation of received data during a period of receiving a payload of burst data by taking the synchronized phase clock determined by the initial phase determining unit as an initial phase. The bit synchronization circuit retimes burst data with a data retiming clock having a predetermined phase relation with the synchronized phase clock and outputs the burst data in synchronization with the internal reference clock.
摘要翻译：一种位同步电路，包括初始相位确定单元，用于在从脉冲串数据的前导码接收周期内快速确定具有与内部参考时钟相同频率的多相位时钟中的接收脉冲串数据同步的时钟以及相位跟踪单元，用于通过将由初始相位确定单元确定的同步相位时钟作为初始相位，在接收到突发数据的有效载荷的周期期间响应于接收数据的相位变化来修正同步相位时钟。位同步电路使用具有与同步相位时钟具有预定相位关系的数据重新定时时钟重新匹配突发数据，并且与内部参考时钟同步输出脉冲串数据。

10. 发明授权

US08457492B2 Optical access system 失效
标题翻译：光接入系统
公开(公告)号：US08457492B2
公开(公告)日：2013-06-04
申请号：US12785693
申请日：2010-05-24
申请人： Masaki Ohira , Tohru Kazawa , Yusuke Yajima , Akihiko Tsuchiya
发明人： Masaki Ohira , Tohru Kazawa , Yusuke Yajima , Akihiko Tsuchiya
IPC分类号： H04B10/20 , H04J14/00
CPC分类号： H04Q11/0067 , H04L1/0009 , H04L1/0025 , H04L1/0057 , H04L1/0075 , H04Q11/0071 , H04Q2011/0079
摘要： There are provided multiple candidates for FEC codes selectable for each of the ONTs. An OLT is provided with: means for storing redundancy and a code length of each FEC code in a table; means for selecting an FEC code; means for encoding or decoding data using the selected FEC code; means for calculating a bandwidth in consideration for the FEC redundancy and the code length with reference to the table during band assignment calculation; and means for notifying the destination ONT of the selected FEC code.
摘要翻译：为每个ONT提供可选择的FEC码的多个候选者。 OLT设置有：用于在表中存储冗余和每个FEC码的码长度的装置; 用于选择FEC码的装置; 用于使用所选择的FEC码对数据进行编码或解码的装置; 用于在频带分配计算期间参照该表计算考虑到FEC冗余和码长的带宽的装置; 以及用于向所述目的地ONT通知所选择的FEC码的装置。

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