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1. 发明授权

US06874033B1 Network repeater and network next transfer desitination searching method 有权
标题翻译：网络中继器和网络下一代转移寻找方法
公开(公告)号：US06874033B1
公开(公告)日：2005-03-29
申请号：US09622484
申请日：1998-03-23
申请人： Kazuo Sugai , Takeshi Aimoto , Nobuhito Matsuyama , Shinichi Akahane , Noboru Tanabe , Yoshihito Sako
发明人： Kazuo Sugai , Takeshi Aimoto , Nobuhito Matsuyama , Shinichi Akahane , Noboru Tanabe , Yoshihito Sako
IPC分类号： G06F17/30 , H04L12/66 , H04L12/701 , H04L12/745 , G06F15/173
CPC分类号： H04L45/00 , H04L45/48 , H04L45/742
摘要： The present invention improves a network forwarding device, such as a router, in a computer network system. When an address to which a received packet is to be forwarded is searched for based on path information, a path search data structure is changed to the one in which, in a 2-branch tree search in which a destination address of the received packet is checked, one bit at a time beginning at a highest-order bit, p (p is an integer equal to or larger than 2) levels are combined into one 2P-branch tree to perform a search of the p levels of the 2-branch tree as a one-level search. This data structure speeds up path search processing.
摘要翻译：本发明改进了计算机网络系统中的诸如路由器的网络转发设备。当基于路径信息搜索要转发接收到的分组的地址时，将路径搜索数据结构改变为在其中所接收分组的目的地地址为2的分支树搜索中的路径搜索数据结构检查，一个位从一个最高位开始，p（p是等于或大于2的整数）的级别被组合成一个2 分支树，以执行对p 2分支树作为一级搜索。该数据结构加速了路径搜索处理。

2. 发明授权

US06778532B1 Packet relaying apparatus and high speed multicast system 有权
标题翻译：分组中继设备和高速组播系统
公开(公告)号：US06778532B1
公开(公告)日：2004-08-17
申请号：US09389301
申请日：1999-09-02
申请人： Shinichi Akahane , Kazuo Sugai , Takeshi Aimoto , Nobuhito Matsuyama , Yoshihito Sako , Hiroshi Sekino
发明人： Shinichi Akahane , Kazuo Sugai , Takeshi Aimoto , Nobuhito Matsuyama , Yoshihito Sako , Hiroshi Sekino
IPC分类号： H04J110
CPC分类号： H04L45/742 , H04L12/18 , H04L12/46 , H04L45/00 , H04L45/16
摘要： In a high speed multicast route searching method of searching information of a transmission port to which a received multicast packet is next transferred: a route address is formed by coupling a receiver address and a sender address in this order; one p-th power-of-2-branch tree node is configured by a collection of one two-branch tree node and two-branch tree nodes of p−1 stages totalling ((p-th power of 2)−1) nodes just under the one two-branch tree node to form a p-th power-of-2-branch tree which is stored in a memory; not one bit but consecutive p bits of the route address coupling the receiver address and sender address in a received multicast packet in this order are checked at the same time; and in accordance with the values of the consecutive bits, a search tree stored in the memory is searched. In this manner, a search process can be completed by tracing nodes (the number of bits of a search key divided by p) times at a maximum, independently from the number of entries.
摘要翻译：在高速多播路由搜索方法中，搜索接收到的多播分组的下一个传输的传输端口的信息：通过按照该顺序耦合接收机地址和发送方地址来形成路由地址; 一个p个2分支树状节点由一个两分支树节点和总共（（p-th功率为2）-1）个节点的p-1级的两分支树节点的集合来配置恰好在一个双分支树节点之下，以形成存储在存储器中的第p个2分支树枝; 不是一个位，而是同时检查在接收到的组播数据包中按顺序耦合接收器地址和发送方地址的路由地址的连续p位; 并且根据连续比特的值，搜索存储在存储器中的搜索树。以这种方式，可以独立于条目的数量，通过跟踪节点（搜索关键字的比特数除以p）乘以最大值来完成搜索处理。

3. 发明授权

US07397765B2 Bandwidth monitoring device 有权
标题翻译：带宽监控设备
公开(公告)号：US07397765B2
公开(公告)日：2008-07-08
申请号：US10769082
申请日：2004-01-30
申请人： Takeshi Aimoto , Nobuhito Matsuyama , Kazuo Sugai , Hiroki Yano , Yoshihiko Sakata , Shinichi Akahane , Yuichi Ishikawa
发明人： Takeshi Aimoto , Nobuhito Matsuyama , Kazuo Sugai , Hiroki Yano , Yoshihiko Sakata , Shinichi Akahane , Yuichi Ishikawa
IPC分类号： H04L1/00
CPC分类号： H04L47/32 , H04L47/10 , H04L47/11 , H04L47/20 , H04L47/2408 , H04L47/283 , H04L47/36
摘要： In one embodiment, a bandwidth monitoring device comprises a packet receiving circuit configured to receive packets; a counter configured to count a total packet length by adding up inputted packet lengths including a packet length of a next input packet and subtracting outputted packet lengths to produce a counted value; a timer configured to time a packet receiving time; a memory configured to store a number of packet receiving times and a number of counted values counted by the counter which correspond to the packet receiving times, respectively; a counter rate-of-change calculating portion configured to calculate a change rate by a first counted value corresponding to an oldest packet receiving time stored in the memory representing an oldest time at which a packet was received and a second counted value corresponding to a latest packet receiving time stored in the memory representing a latest time at which a packet was received; and a determining portion configured to decide whether the next input packet will be discarded based on a probability computed by the change rate and the counted value counted by the counter when the packet receiving circuit receives the next input packet.
摘要翻译：在一个实施例中，带宽监视设备包括被配置为接收分组的分组接收电路; 配置为通过将包括下一个输入分组的分组长度的输入分组长度相加并减去输出的分组长度以产生计数值来计数总分组长度; 定时器，配置为对分组接收时间进行计时; 存储器，被配置为分别存储与所述分组接收时间对应的由所述计数器计数的多个分组接收时间和多个计数值; 计数变化率计算部分，被配置为计算与存储在表示接收到分组的最旧时间的存储器中的最旧的分组接收时间相对应的第一计数值的变化率，以及对应于最新的分组接收时间存储在存储器中，表示接收到分组的最新时间; 以及确定部分，被配置为基于当分组接收电路接收到下一个输入分组时由所述改变率计算的概率和由所述计数器计数的计数值来决定下一个输入分组是否将被丢弃。

4. 发明授权

US07953220B2 Network switching device 有权
标题翻译：网络交换设备
公开(公告)号：US07953220B2
公开(公告)日：2011-05-31
申请号：US11487992
申请日：2006-07-18
申请人： Masayuki Shinohara , Nobuhito Matsuyama , Takayuki Muranaka , Isao Kimura , Shinichi Akahane
发明人： Masayuki Shinohara , Nobuhito Matsuyama , Takayuki Muranaka , Isao Kimura , Shinichi Akahane
IPC分类号： H04M1/00 , H04M3/00
CPC分类号： H04L49/25 , H04L49/40 , H04L49/552
摘要： A method of controlling a network switching device is provided. Perform a mode-process including setting the determination-operation mode of a target switching block to a determination-operation mode that is different from the determination-operation mode of the first switching block while the first switching block is handling the switching-determination process. The target switching block is one switching block selected from the second switching blocks. Then, perform a switchover process including starting the switching-determination process using the target switching block instead of the first switching block, after completion of the process of setting the determination-operation mode of the target switching block.
摘要翻译：提供了一种控制网络交换设备的方法。执行模式处理，包括将目标切换块的确定操作模式设置为与第一切换块正在处理切换确定处理时不同于第一切换块的确定操作模式的确定操作模式。目标切换块是从第二切换块中选择的一个切换块。然后，在完成对目标切换块的判定动作模式的处理完成之后，执行切换处理，包括使用目标切换块而不是第一切换块开始切换确定处理。

5. 发明申请

US20070201461A1 Network switching device 有权
标题翻译：网络交换设备
公开(公告)号：US20070201461A1
公开(公告)日：2007-08-30
申请号：US11487990
申请日：2006-07-18
申请人： Masayuki Shinohara , Nobuhito Matsuyama , Takayuki Muranaka , Isao Kimura , Shinichi Akahane
发明人： Masayuki Shinohara , Nobuhito Matsuyama , Takayuki Muranaka , Isao Kimura , Shinichi Akahane
IPC分类号： H04L12/56
CPC分类号： H04L45/00 , H04L45/22 , H04L45/28 , H04L45/60 , H04L49/25 , H04L49/3009
摘要： A network switching device includes packet switching means and clock signal providing means. The packet switching means receive packets sent from any of the plurality of lines, determines forwarding destinations for the received packets, and forwards the received packets. The packet switching means operates synchronized with a provided clock signal. The clock signal providing means provides the clock signal to the packet switching means. The clock signal providing means is capable of switching a frequency of at least a portion of the clock signal for being provided to the packet switching means to multiple different values.
摘要翻译：网络交换设备包括分组交换装置和时钟信号提供装置。分组交换装置接收从多条线路中的任意一条线路发送的分组，确定接收到的分组的转发目的地，并转发所接收的分组。分组交换装置与提供的时钟信号同步操作。时钟信号提供装置向分组交换装置提供时钟信号。时钟信号提供装置能够将用于提供给分组交换装置的时钟信号的至少一部分的频率切换为多个不同的值。

6. 发明授权

US08472618B2 Network switching device 有权
标题翻译：网络交换设备
公开(公告)号：US08472618B2
公开(公告)日：2013-06-25
申请号：US13149029
申请日：2011-05-31
申请人： Masayuki Shinohara , Nobuhito Matsuyama , Takayuki Muranaka , Isao Kimura , Shinichi Akahane
发明人： Masayuki Shinohara , Nobuhito Matsuyama , Takayuki Muranaka , Isao Kimura , Shinichi Akahane
IPC分类号： H04M1/00
CPC分类号： H04L49/25 , H04L49/40 , H04L49/552
摘要： Network switching arrangements including: setting an operation mode of a target switching block to a operation mode that is different from an operation mode of a first switching block while the first switching block is handling a switching process, the target switching block being one switching block selected from second switching blocks; performing a switchover process including starting the switching process using the target switching block instead of the first switching block, after completion of setting the operation mode of the target switching block; and copying the switching information held by the first switching block to the target switching block, prior to starting the switching process using the target switching block, after completion of setting the operation mode of the target switching block.
摘要翻译：网络交换装置包括：在第一切换块正在处理切换处理的同时，将目标切换块的操作模式设置为与第一切换块的操作模式不同的操作模式，所述目标切换块是被选择的一个切换块从第二切换块; 在完成所述目标切换块的操作模式之后，执行包括使用所述目标切换块而不是所述第一切换块开始切换处理的切换处理; 以及在完成对目标切换块的操作模式的设置之后，在开始使用目标切换块的切换处理之前，将由第一切换块保持的切换信息复制到目标切换块。

7. 发明授权

US07804794B2 Power-saving network switching device 有权
标题翻译：省电网络交换设备
公开(公告)号：US07804794B2
公开(公告)日：2010-09-28
申请号：US11487990
申请日：2006-07-18
申请人： Masayuki Shinohara , Nobuhito Matsuyama , Takayuki Muranaka , Isao Kimura , Shinichi Akahane
发明人： Masayuki Shinohara , Nobuhito Matsuyama , Takayuki Muranaka , Isao Kimura , Shinichi Akahane
IPC分类号： G08C17/00 , H04L12/28 , H04L12/56 , H04B1/04 , H04B1/38
CPC分类号： H04L45/00 , H04L45/22 , H04L45/28 , H04L45/60 , H04L49/25 , H04L49/3009
摘要： A network switching device includes packet switching means and clock signal providing means. The packet switching means receive packets sent from any of the plurality of lines, determines forwarding destinations for the received packets, and forwards the received packets. The packet switching means operates synchronized with a provided clock signal. The clock signal providing means provides the clock signal to the packet switching means. The clock signal providing means is capable of switching a frequency of at least a portion of the clock signal for being provided to the packet switching means to multiple different values.
摘要翻译：网络交换设备包括分组交换装置和时钟信号提供装置。分组交换装置接收从多条线路中的任意一条线路发送的分组，确定接收到的分组的转发目的地，并转发所接收的分组。分组交换装置与提供的时钟信号同步操作。时钟信号提供装置向分组交换装置提供时钟信号。时钟信号提供装置能够将用于提供给分组交换装置的时钟信号的至少一部分的频率切换为多个不同的值。

8. 发明申请

US20110228792A1 NETWORK SWITCHING DEVICE 有权
标题翻译：网络切换设备
公开(公告)号：US20110228792A1
公开(公告)日：2011-09-22
申请号：US13149029
申请日：2011-05-31
申请人： Masayuki SHINOHARA , Nobuhito Matsuyama , Takayuki Muranaka , Isao Kimura , Shinichi Akahane
发明人： Masayuki SHINOHARA , Nobuhito Matsuyama , Takayuki Muranaka , Isao Kimura , Shinichi Akahane
IPC分类号： H04L12/56
CPC分类号： H04L49/25 , H04L49/40 , H04L49/552
摘要： Network switching arrangements including: setting an operation mode of a target switching block to a operation mode that is different from an operation mode of a first switching block while the first switching block is handling a switching process, the target switching block being one switching block selected from second switching blocks; performing a switchover process including starting the switching process using the target switching block instead of the first switching block, after completion of setting the operation mode of the target switching block; and copying the switching information held by the first switching block to the target switching block, prior to starting the switching process using the target switching block, after completion of setting the operation mode of the target switching block.
摘要翻译：网络交换装置包括：在第一切换块正在处理切换处理的同时，将目标切换块的操作模式设置为与第一切换块的操作模式不同的操作模式，所述目标切换块是被选择的一个切换块从第二切换块; 在完成所述目标切换块的操作模式之后，执行包括使用所述目标切换块而不是所述第一切换块开始切换处理的切换处理; 以及在完成对目标切换块的操作模式的设置之后，在开始使用目标切换块的切换处理之前，将由第一切换块保持的切换信息复制到目标切换块。

9. 发明申请

US20070201426A1 Network switching device 有权
标题翻译：网络交换设备
公开(公告)号：US20070201426A1
公开(公告)日：2007-08-30
申请号：US11487992
申请日：2006-07-18
申请人： Massayuki Shinohara , Nobuhito Matsuyama , Takayuki Muranaka , Isao Kimura , Shinichi Akahane
发明人： Massayuki Shinohara , Nobuhito Matsuyama , Takayuki Muranaka , Isao Kimura , Shinichi Akahane
IPC分类号： H04L12/28
CPC分类号： H04L49/25 , H04L49/40 , H04L49/552
摘要： A method of controlling a network switching device is provided. Perform a mode-process including setting the determination-operation mode of a target switching block to a determination-operation mode that is different from the determination-operation mode of the first switching block while the first switching block is handling the switching-determination process. The target switching block is one switching block selected from the second switching blocks. Then, perform a switchover process including starting the switching-determination process using the target switching block instead of the first switching block, after completion of the process of setting the determination-operation mode of the target switching block.
摘要翻译：提供了一种控制网络交换设备的方法。执行模式处理，包括将目标切换块的确定操作模式设置为与第一切换块正在处理切换确定处理时不同于第一切换块的确定操作模式的确定操作模式。目标切换块是从第二切换块中选择的一个切换块。然后，在完成对目标切换块的判定动作模式的处理完成之后，执行切换处理，包括使用目标切换块而不是第一切换块开始切换确定处理。

10. 发明授权

US06963578B2 Router 失效
标题翻译：路由器
公开(公告)号：US06963578B2
公开(公告)日：2005-11-08
申请号：US09917765
申请日：2001-07-31
申请人： Shinichi Akahane , Takeshi Aimoto
发明人： Shinichi Akahane , Takeshi Aimoto
IPC分类号： H04L12/707 , H04L12/711 , H04L12/725 , H04L12/743 , H04L12/773 , H04L12/801 , H04L12/865 , H04L12/877 , H04L12/911 , H04L12/28 , H04L12/56
CPC分类号： H04L47/10 , H04L45/00 , H04L45/22 , H04L45/28 , H04L45/302 , H04L45/54 , H04L45/60 , H04L47/125 , H04L47/2441 , H04L47/32 , H04L47/34
摘要： A router comprising a priority level distinguishing means for distinguishing the priority level of a packet by referring to the information contained in the header of the packet, a routing table where an output path comprising one or more output lines can be mapped to each level of priority, an output path determining unit that searches the routing table and determines an output path to be used for sending out packets, and a preferential delivery controller that executes delivery control in accordance with the priority level for each output line corresponding to the output path. In response to a fault state in a preferred output line, the router can reroute high priority packets over an alternative output line while maintaining priority. The router may also calculate a distribution ratio to determine the optimal load for each output line for a given packet priority.
摘要翻译：一种路由器，包括：通过参考分组报头中包含的信息来区分分组的优先级的优先级别区分装置，包括一条或多条输出线的输出路径可被映射到每个优先级别的路由表输出路径确定单元，其搜索路由表并确定要用于发送分组的输出路径;以及优先递送控制器，其根据对应于输出路径的每个输出线的优先级执行递送控制。响应于优选输出线路中的故障状态，路由器可以通过替代输出线路重新路由高优先级分组，同时保持优先级。路由器还可以计算分配比率，以确定给定分组优先级的每条输出线路的最佳负载。

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