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31. 发明申请

US20070064731A1 Transmission apparatus with function of multi-step bandwidth assignment to other communication apparatuses 失效
标题翻译：具有对其他通信装置进行多步带宽分配功能的发送装置
公开(公告)号：US20070064731A1
公开(公告)日：2007-03-22
申请号：US11340524
申请日：2006-01-27
申请人： Masahiko Mizutani , Yoshihiro Ashi , Masayuki Takase , Kenichi Sakamoto , Atsushi Iwamura , Tohru Kazawa , Norihiro Sakamoto
发明人： Masahiko Mizutani , Yoshihiro Ashi , Masayuki Takase , Kenichi Sakamoto , Atsushi Iwamura , Tohru Kazawa , Norihiro Sakamoto
IPC分类号： H04J3/22
CPC分类号： H04L47/2433 , H04L47/10 , H04L47/15 , H04L47/263 , H04L47/30 , H04L47/365 , H04L47/70 , H04L47/788 , H04L47/805
摘要： A transmission apparatus for use in fixed bandwidth communications and variable bandwidth communications. The transmission apparatus has a memory unit, which stores information contained in a frame and indicating the amount of data to be transmitted from a terminal device, a computing unit, which calculates a bandwidth amount to be assigned to the terminal device based on the data amount, and a transmission unit, which sends the calculated assigned bandwidth amount to the terminal device. The transmission apparatus is characterized in that the computing unit calculates bandwidth amounts to be assigned to different types of flow of which different transmission qualities are requested according to a priority level that is set to each flow type. The transmission apparatus is also characterized in that bandwidth is controlled by designating, instead of a necessary bandwidth amount, transmission starting timing and transmission ending timing, particularly for fixed bandwidth communication data.
摘要翻译：一种用于固定带宽通信和可变带宽通信的传输装置。发送装置具有存储单元，其存储包含在帧中的信息，并且指示要从终端设备发送的数据量，计算单元，其基于数据量计算分配给终端设备的带宽量，以及将计算出的分配带宽量发送给终端装置的发送单元。传输装置的特征在于，计算单元根据设置为每个流类型的优先级，计算要分配给不同类型的流请求的带宽量。发送装置的特征还在于，通过特定于固定带宽通信数据来指定传输开始定时和发送结束定时而不是必要的带宽量来控制带宽。

32. 发明申请

US20070025735A1 Optical access system 有权
标题翻译：光接入系统
公开(公告)号：US20070025735A1
公开(公告)日：2007-02-01
申请号：US11346467
申请日：2006-02-03
申请人： Kenichi Sakamoto , Yoshihiro Ashi , Tohru Kazawa , Ryosuke Nishino , Masayuki Takase , Masahiko Mizutani
发明人： Kenichi Sakamoto , Yoshihiro Ashi , Tohru Kazawa , Ryosuke Nishino , Masayuki Takase , Masahiko Mizutani
IPC分类号： H04J14/00
CPC分类号： H04J3/1694 , H04J3/0682
摘要： An optical access system capable of avoiding cutoffs or interruption in the periodically transmitted signals that occur during the ranging time is provided. A first method to avoid signal cutoffs is to stop periodic transmit signals at the transmitter during the ranging period, and transmit all the periodic transmit signals together when the ranging ends, and buffer the signals at the receiver to prepare for ranging. A second method is to fix definite periods ahead of time for performing ranging, then cluster the multiple periodic transmit signals together in sets at the transmitter and send them, and then disassemble those sets back into signals at the receiver. The transmitting and receiving is then controlled so that the transmit periods do not overlap with the ranging periods. In this way an optical access system is provided that can send and receive signals requiring periodic transmissions without interruption even during ranging operation.
摘要翻译：提供一种能够避免在测距时间期间发生的周期性发射信号中的截断或中断的光接入系统。避免信号截止的第一种方法是在测距周期期间在发射机处停止周期性发射信号，并且在测距结束时将所有周期性发射信号传输到一起，并且在接收机处缓冲信号以准备测距。第二种方法是提前确定一段时间进行测距，然后将多个周期性发射信号在发射机上集合在一起并发送它们，然后将这些组分解回接收机的信号。然后控制发送和接收，使得发送周期不与测距周期重叠。以这种方式，提供光接入系统，即使在测距操作期间也可以发送和接收需要周期性传输的信号而不中断。

33. 发明授权

US5500756A Optical fiber transmission system and supervision method of the same 失效
标题翻译：光纤传输系统和监控方法相同
公开(公告)号：US5500756A
公开(公告)日：1996-03-19
申请号：US23546
申请日：1993-02-26
申请人： Hideaki Tsushima , Shinya Sasaki , Yukio Nakano , Hiroyuki Nakano , Ryoji Tateyari , Hironari Matsuda , Kenji Tomooka , Naohiro Sakakida , Shin Nishimura , Yoshihiro Yano , Youichi Igarashi , Satoshi Aoki , Masahiro Takatori , Tohru Kazawa , Yoshihiro Ashi
发明人： Hideaki Tsushima , Shinya Sasaki , Yukio Nakano , Hiroyuki Nakano , Ryoji Tateyari , Hironari Matsuda , Kenji Tomooka , Naohiro Sakakida , Shin Nishimura , Yoshihiro Yano , Youichi Igarashi , Satoshi Aoki , Masahiro Takatori , Tohru Kazawa , Yoshihiro Ashi
IPC分类号： H04B10/02 , H04B10/08 , H04B10/17 , H04B10/18 , H04J14/02 , H04Q11/00 , H04Q11/04
CPC分类号： H04B10/291 , H04B10/0777 , H04B10/2537 , H04B10/2912 , H04B10/2914 , H04B10/299 , H04J14/02 , H04J14/0246 , H04J14/025 , H04J14/0279 , H04Q11/0062 , H04Q11/0478 , H04B2210/003 , H04B2210/071 , H04B2210/078 , H04J14/0226 , H04J14/0227 , H04J2203/0051 , H04Q2011/0069 , H04Q2011/0081 , H04Q2011/0083
摘要： An optical repeater for realizing transmission of supervisory information of an optical fiber transmission system without the output power of an optical fiber amplifier being reduced, wherein a supervisory optical transmitter and optical receiver with a wavelength which is similar to the wavelength of the pumping light source of the optical fiber amplifier are mounted, and on the input side of the optical repeater, pumping light is multiplexed in the forward direction and a supervisory optical signal, which is multiplexed in wavelength and transmitted, is demultiplexed simultaneously by the first wavelength multi- and demultiplexer and they are received by the supervisory optical receiver, and on the output side of the optical repeater, pumping light is muitiplexed in the reverse direction and a supervisory optical signal outputted from the supervisory optical transmitter is multiplexed by the second wavelength multi- and demultiplexer.
摘要翻译：用于实现光纤传输系统的监控信息的传输而不减少光纤放大器的输出功率的光中继器，其中，具有与波长相似的波长的监控光发射机和光接收机，安装光纤放大器，并且在光中继器的输入侧，泵浦光在正向复用，并且以波长和发送的多路复用的监控光信号由第一波长多路复用器和解复用器同时解复用并且由监控光接收器接收，在光中继器的输出侧，泵浦光在相反方向多路复用，从监控光发送器输出的监控光信号由第二波长多路复用器多路复用。

34. 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。

35. 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。

36. 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.

37. 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。

38. 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。

39. 发明申请

US20120106958A1 OPTICAL MULTIPLEXING TERMINATING DEVICE, PASSIVE OPTICAL NETWORK SYSTEM AND METHOD FOR ALLOCATING WAVELENGTH 失效
标题翻译：光学多路复用终端设备，被动光网络系统和分配波长的方法
公开(公告)号：US20120106958A1
公开(公告)日：2012-05-03
申请号：US13262754
申请日：2009-04-07
申请人： Norihiro Sakamoto , Tohru Kazawa , Yusuke Yajima , Akihiko Tsuchiya
发明人： Norihiro Sakamoto , Tohru Kazawa , Yusuke Yajima , Akihiko Tsuchiya
IPC分类号： H04J14/00
CPC分类号： H04J14/0282 , H04J14/0246 , H04J14/0252 , H04Q2213/1301
摘要： A passive optical network system such that the power consumption can be reduced as much as possible according to the end-user traffic. An OLT uses the DBA function thereof and sequentially uses frequencies in ascending order of transmission rate in order to sequentially allocate bands to ONUs in ascending order of the requested bandwidth. At this time, a frequency to be allocated is selected so that the bandwidth allocated to each ONU is narrower than a maximum bandwidth through which transmission using the allocated wavelength is enabled. An OLT uses a grant area to specify the transmission timing of the secondary station and to inform the specified transmission timing to the secondary station. In addition, an area is set for storing information used to inform the secondary station of a new frequency to be used.
摘要翻译：无源光网络系统，使得可以根据最终用户流量尽可能地减少功耗。 OLT使用其DBA功能，并按照传输速率的升序依次使用频率，以按照所请求带宽的升序顺序地向ONU分配频带。此时，选择要分配的频率，使得分配给每个ONU的带宽比通过使能分配的波长的传输得到的最大带宽更窄。 OLT使用授权区域来指定次站的发送定时，并将指定的发送定时通知给次站。此外，设置用于存储用于通知次站的要使用的新频率的信息的区域。

40. 发明申请

US20120008948A1 PASSIVE OPTICAL NETWORK SYSTEM AND OPERATING METHOD THEREOF 失效
标题翻译：被动光网络系统及其操作方法
公开(公告)号：US20120008948A1
公开(公告)日：2012-01-12
申请号：US13201804
申请日：2009-11-09
申请人： Tohru Kazawa , Akihiko Tsuchiya , Norihiro Sakamoto , Yusuke Yajima , Masatoshi Takihiro
发明人： Tohru Kazawa , Akihiko Tsuchiya , Norihiro Sakamoto , Yusuke Yajima , Masatoshi Takihiro
IPC分类号： H04B10/20
CPC分类号： H04L12/44 , H04Q11/0067 , H04Q2011/0079
摘要： Provided is a passive optical network system for operating a mixture of PONs with differing transmission speeds and is capable of reducing power consumption on the basis of the amount of signals being transmitted. The master station of the passive optical network system, which determines the amount and timing of signals sent thereto by each of a plurality of slave stations on the basis of the requests of the plurality of slave stations and receives signals from the plurality of slave stations via an optical fiber network, is equipped with a control unit that determines in each set cycle the amount, transmission timing, and transmission speed of the signals that each slave station is permitted to transmit to said master station on the basis of the amount of signals that each of the plurality of slave stations has requested to transmit, and that notifies such to each slave station. Additionally, each of the plurality of slave stations is equipped with a control unit that transmits signals to the master station at a first transmission speed or a second transmission speed that is faster than the first transmission speed, and is configured to transmit signals with either the first transmission speed or the second transmission speed on the basis of notifications from the master station.
摘要翻译：提供了一种用于操作具有不同传输速度的PON的混合的无源光网络系统，并且能够基于正在传输的信号量来减少功耗。无源光网络系统的主站，其根据多个从站的请求确定发送给多个从站的信号的数量和定时，并且经由光纤网络配备有控制单元，该控制单元在每个设定的周期中根据所述主站的信号量确定每个从站被允许向所述主站发送的信号的量，发送定时和传输速度，多个从站中的每一个已经请求发送，并且通知每个从站。此外，多个从站中的每一个配备有控制单元，该控制单元以比第一传输速度快的第一传输速度或第二传输速度向主站发送信号，并且被配置为：基于来自主站的通知的第一传输速度或第二传输速度。

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