公开(公告)号：US08380065B2

公开(公告)日：2013-02-19

申请号：US12582083

申请日：2009-10-20

申请人： Michitaka Okuno ,  Koji Wakayama ,  Kenichi Sakamoto ,  Hiroki Ikeda

发明人： Michitaka Okuno ,  Koji Wakayama ,  Kenichi Sakamoto ,  Hiroki Ikeda

IPC分类号： H04J14/00

CPC分类号： H04Q11/0067 ,  H04J2203/0058 ,  H04L43/0864 ,  H04Q2011/0079 ,  H04Q2011/0088

摘要： Provided is an optical access system comprising: an optical line terminal connected to another network; a plurality of optical network units, each connected to a user terminal; and at least one of an optical switching unit and an optical splitter, which is installed between the optical line terminal and the plurality of optical network units. The optical line terminal allocates a length of time to a discovery phase for detecting the plurality of optical network units, and a length of time to data transmission phases for transferring data from the plurality of optical network units; and changes a ratio of the length of time of the discovery phase to the length of time of the data transmission phases so that the length of time of the discovery phase is shortened in the case where a number of the optical network units that are registered in the optical line terminal increase.

摘要翻译： 提供一种光接入系统，包括：连接到另一网络的光线路终端; 多个光网络单元，各自连接到用户终端; 以及安装在光线路终端与多个光网络单元之间的光交换单元和分光器中的至少一个。 光线路终端将用于检测多个光网络单元的发现阶段的时间长度分配给从多个光网络单元传送数据的数据传输阶段的时间长度; 并且将发现阶段的时间长度与数据传输阶段的时间长度的比率进行改变，使得在注册的光网络单元的数量的情况下，发现阶段的时间长度被缩短 光线路终端增加。

公开(公告)号：US08290107B2

公开(公告)日：2012-10-16

申请号：US12320472

申请日：2009-01-27

申请人： Masayuki Takase ,  Hideki Endo ,  Koji Fukuda ,  Kenichi Sakamoto

发明人： Masayuki Takase ,  Hideki Endo ,  Koji Fukuda ,  Kenichi Sakamoto

IPC分类号： H04L7/00 ,  H04L25/00 ,  H04L25/40

CPC分类号： H04L7/033

摘要： A clock data recovery circuit that supplies stable reference clocks to the object respectively by shortening the time of bit synchronization with each received burst data signal regardless of jittering components included in the received burst data signal, includes an interpolator that generates a reference clock having the same frequency as that of a received burst data signal and two types of determination clocks having a phase that is different from that of the reference clock respectively; and a phase adjustment control circuit that can change the phase of the reference clock in units of M/2π. After beginning receiving of a burst data signal, the clock data recovery circuit sets a large phase change value at the first phase adjustment timing and reduces the change value in the second and subsequent phase adjustment timings, thereby realizing quick bit synchronization with the received burst data signal to generate a reference clock.

摘要翻译： 一种时钟数据恢复电路，其分别通过缩短与接收的突发数据信号中包含的抖动分量的每个接收的脉冲数据信号的位同步时间来分别提供稳定的参考时钟，包括产生具有相同时钟的参考时钟的内插器 频率与接收到的突发数据信号的频率相同，并且具有与参考时钟的相位不同的相位的两种类型的确定时钟; 以及可以以M / 2＆amp; pgr为单位改变参考时钟的相位的相位调整控制电路。 在开始接收到脉冲串数据信号之后，时钟数据恢复电路在第一相位调整定时设置较大的相位变化值，并且减小第二次和随后的相位调整定时中的变化值，从而实现与所接收的脉冲串数据的快速位同步 信号产生参考时钟。

公开(公告)号：US08014420B2

公开(公告)日：2011-09-06

申请号：US12550945

申请日：2009-08-31

申请人： Kazuho Miki ,  Kenichi Sakamoto ,  Koji Wakayama

发明人： Kazuho Miki ,  Kenichi Sakamoto ,  Koji Wakayama

IPC分类号： H04J3/22

CPC分类号： H04L49/3009 ,  H04L49/602

摘要： A label switching type packet forwarding apparatus having a routing information table in which a forwarding type of a reception packet, output port identification information, and output routing information of a specific layer in the OSI reference model determined by the forwarding type are defined in correspondence with routing information which is found upon reception of a packet, for converting a header of a reception packet in accordance with the packet forwarding type and the output routing information obtained by a table search.

摘要翻译： 一种标签交换型分组转发装置，具有路由信息表，其中，由转发类型确定的OSI参考模型中的接收分组的转发类型，输出端口识别信息和特定层的输出路由信息被定义为与 在接收到分组时发现的路由信息​​，用于根据分组转发类型转换接收分组的报头，以及通过表搜索获得的输出路由信息。

公开(公告)号：US07983281B2

公开(公告)日：2011-07-19

申请号：US11828729

申请日：2007-07-26

申请人： Kenichi Sakamoto ,  Kazuyoshi Hoshino ,  Koji Wakayama ,  Shiro Tanabe ,  Noboru Endo

发明人： Kenichi Sakamoto ,  Kazuyoshi Hoshino ,  Koji Wakayama ,  Shiro Tanabe ,  Noboru Endo

IPC分类号： H04L12/46

CPC分类号： H04L45/50 ,  H04L12/2856 ,  H04L12/2874 ,  H04L12/4633 ,  H04L12/4641

摘要： A method serves to compose a VPN (Virtual Private Network) over a plurality of networks, each of which is managed by a different Internet Service Provider (ISP). When a packet with a first capsule header used for composing a VPN in a first ISP network is transmitted to a second ISP network, a route for outputting the packet to the second ISP network is determined based on the information both in the capsule header and in the IP header. In addition, a second capsule header used for composing a VPN in the second ISP network is determined based on the above information.

摘要翻译： 一种方法用于在多个网络中组成VPN（虚拟专用网络），每个网络由不同的因特网服务提供商（ISP）管理。 当将具有用于组合第一ISP网络中的VPN的第一胶囊头的分组发送到第二ISP网络时，基于胶囊头部和第二ISP网络中的信息来确定用于将分组输出到第二ISP网络的路由 IP头。 此外，基于上述信息确定用于构成第二ISP网络中的VPN的第二胶囊报头。

公开(公告)号：US07974282B2

公开(公告)日：2011-07-05

申请号：US11819309

申请日：2007-06-26

申请人： Takeshi Shibata ,  Kenichi Sakamoto ,  Hidehiro Fukushima

发明人： Takeshi Shibata ,  Kenichi Sakamoto ,  Hidehiro Fukushima

IPC分类号： H04L12/56

CPC分类号： H04L12/1863 ,  H04L12/12 ,  H04L45/16 ,  H04L45/28 ,  Y02D50/40 ,  Y02D50/42

摘要： For continuing multicast data transfer according to path control information after being switched from an active status to a standby status, it is necessary that the standby status hold the same path control information as the active status. However, a synchronization of the path control information thereof is not guaranteed. To solve the above-mentioned problem, this invention provides a data transfer apparatus coupled to a network, including a plurality of interfaces for transmitting and receiving data, in which the data transfer apparatus is configured to: create transfer destination information for correlating a destination of the data with the interfaces for transmitting the data to be transmitted to the destination; and transmit, upon reception of multicast data via one of the interfaces before being judged that the transfer destination information has been created, the multicast data from at least one of the interfaces irrespective of the transfer destination information.

摘要翻译： 为了在从活动状态切换到待机状态之后根据路径控制信息继续组播数据传输，需要备用状态保持与活动状态相同的路径控制信息。 然而，不能保证其路径控制信息的同步。 为了解决上述问题，本发明提供了一种耦合到网络的数据传送装置，包括用于发送和接收数据的多个接口，其中数据传送装置被配置为：创建用于将目的地的目的地相关联的传送目的地信息 具有用于发送要发送到目的地的数据的接口的数据; 并且在传送目的地信息被创建之前，经由所述接口之一在接收到多播数据之后，从所述接口中的至少一个接收多播数据，而不管所述传送目的地信息如何。

公开(公告)号：US07936991B2

公开(公告)日：2011-05-03

申请号：US12068829

申请日：2008-02-12

申请人： Toshiki Sugawara ,  Masahiko Mizutani ,  Hiroki Ikeda ,  Kenichi Sakamoto

发明人： Toshiki Sugawara ,  Masahiko Mizutani ,  Hiroki Ikeda ,  Kenichi Sakamoto

IPC分类号： H04B10/20 ,  H04J14/00

CPC分类号： H04L7/0075 ,  H04J3/1694

摘要： An optical access communication apparatus and an optical access communication system for the coexistence of two wideband PON systems without using an expensive optical device or module. A low-speed PON and a high-speed PON have a same upstream wavelength, and an OLT receives optical signals by a same optical receiver in the two systems, converts the optical signals into electric signals, amplifies the electric signals, branches the amplified electric signals, and processes the branched signals by clock and data recovery sections of bit rates corresponding to the two PON systems, thereby achieving an optical communication apparatus and an optical communication system for constructing a simple and low-cost triple-play service system of excellent transmission quality.

摘要翻译： 一种用于两个宽带PON系统共存而不使用昂贵的光学设备或模块的光接入通信设备和光接入通信系统。 低速PON和高速PON具有相同的上行波长，并且OLT在两个系统中通过相同的光接收器接收光信号，将光信号转换为电信号，放大电信号，将放大的电 信号，并通过对应于两个PON系统的比特率的时钟和数据恢复部分对分支信号进行处理，从而实现用于构建出色传输的简单且低成本的三重播放业务系统的光通信装置和光通信系统 质量。

公开(公告)号：US20110091211A1

公开(公告)日：2011-04-21

申请号：US12979871

申请日：2010-12-28

申请人： Tohru KAZAWA ,  Kenichi Sakamoto ,  Ryosuke Nishino

发明人： Tohru KAZAWA ,  Kenichi Sakamoto ,  Ryosuke Nishino

IPC分类号： H04B10/20

CPC分类号： H04J3/1694 ,  H04J2203/0041 ,  H04J2203/0067 ,  H04J2203/0091 ,  H04Q11/0067 ,  H04Q2011/0064

摘要： In a GPON system conforming to ITU-T Recommendations G.984.3, an optical line terminal is provided which has an active bandwidth allocation function that preferentially puts small bandwidth signals in a particular segment of a frame, e.g., at a head of the frame, to prevent fragmentations that may occur particularly when allocating small bandwidths of about 100 kbits/s.

摘要翻译： 在符合ITU-T建议书G.984.3的GPON系统中，提供了一种光线路终端，其具有主动带宽分配功能，其优先将小带宽信号放置在帧的特定段中，例如在帧的头部， 以防止在分配大约100kbits / s的小带宽时可能发生的碎片。

公开(公告)号：US20100221007A1

公开(公告)日：2010-09-02

申请号：US12780364

申请日：2010-05-14

申请人： Kenichi Sakamoto ,  Tohru Kazawa

发明人： Kenichi Sakamoto ,  Tohru Kazawa

IPC分类号： H04J14/00

CPC分类号： H04J14/0282 ,  H04J14/0226 ,  H04J14/0232 ,  H04J14/0238 ,  H04J14/0246 ,  H04J14/025

摘要： In a PON system by WDM, IP broadcast can be received without oppressing a band used by a user for Internet communication. An OLT provides a first wavelength received in common by respective ONUs and plural second wavelengths by which the OLT and the respective ONUs perform communication individually. With respect to signals in the downstream direction, each of the OLTs includes a transmitter to transmit the first wavelength and plural transmitters to transmit the second wavelengths used for the individual communication with the respective ONUs. Each of the ONUs includes a receiver to receive the first wavelength and a receiver to receive the second wavelength used in the ONU itself. The OLT transmits data of the IP broadcast by the first wavelength and transmits individual data of each of the ONUs by the second wavelength corresponding to the ONU.

摘要翻译： 在通过WDM的PON系统中，可以接收IP广播而不压迫用户使用的用于因特网通信的频带。 OLT提供通过相应ONU共同接收的第一波长和多个第二波长，OLT和各个ONU单独执行通信。 对于下行方向的信号，每个OLT包括发送第一波长的发射机和多个发射机，以发射用于与各个ONU的单独通信的第二波长。 每个ONU包括接收第一波长的接收机和用于接收在ONU本身中使用的第二波长的接收机。 OLT以第一波长发送IP广播的数据，并将每个ONU的个别数据发送到与ONU对应的第二波长。

公开(公告)号：US07773880B2

公开(公告)日：2010-08-10

申请号：US12076897

申请日：2008-03-25

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： H04B10/00

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集合在一起，并将其发送给发射机，然后将它们分组回接收机的信号。 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。

公开(公告)号：US07752663B2

公开(公告)日：2010-07-06

申请号：US11271798

申请日：2005-11-14

申请人： Hirofumi Nakakoji ,  Masato Terada ,  Kenichi Sakamoto

发明人： Hirofumi Nakakoji ,  Masato Terada ,  Kenichi Sakamoto

IPC分类号： G06F12/14

CPC分类号： H04L63/145 ,  G06F21/552

摘要： An analysis unit which effectively detects incidents on the basis of events detected by a security unit such as an intrusion detection system (IDS) or a firewall (FW) installed in a network stores statistical information that is frequency-distributed information of event information obtained from the collection unit, frequency component information obtained by frequency-analyzing the statistical information and the result obtained by making analysis on the basis of the frequency component. The collection unit collects and normalizes event log information outputted by IDS or FW to be stored in an event database (DB). An alert notification unit includes an alert database (DB) for storing an alert instruction transmitted from the analysis unit and an alert notification destination and reports occurrence of incidents to a manager or the like in accordance with the instruction.

摘要翻译： 基于由安装在网络中的入侵检测系统（IDS）或防火墙（FW）等安全单元检测到的事件来有效地检测事件的分析单元存储作为从网络中获取的事件信息的频率分布信息的统计信息 收集单元，通过频率分析统计信息获得的频率分量信息和通过基于频率分量进行分析而获得的结果。 收集单元收集并规范要存储在事件数据库（DB）中的由IDS或FW输出的事件日志信息。 警报通知单元包括用于存储从分析单元发送的警报指令和警报通知目的地的警报数据库（DB），并且根据该指令将事件发生事件报告给管理者等。