公开(公告)号：US5469428A

公开(公告)日：1995-11-21

申请号：US858364

申请日：1992-03-25

申请人： Nobuyuki Tokura ,  Yoshio Kajiyama ,  Hideo Tatsuno ,  Takashi Nakashima

发明人： Nobuyuki Tokura ,  Yoshio Kajiyama ,  Hideo Tatsuno ,  Takashi Nakashima

IPC分类号： H04L12/437 ,  H04Q11/04 ,  H04L12/42

CPC分类号： H04L12/437 ,  H04J2203/006 ,  H04J2203/0089

摘要： A loop-back recovery technique used when a failure takes place in a ring network, for transmitting information to a path indicated with a path ID number or the time slot position from a periodic frame. This is achieved by establishing working paths on one of the dual ring line between a transmission node and a receiving node thereof, establishing ring-formed protection paths in a ring line of the direction opposite to the working line, and making a loop-back from the working paths to the corresponding protection paths at a node which detected the failure. The receiving node multiplexes the working and protection paths to receive data from either.

摘要翻译： 当在环形网络中发生故障时使用的环回恢复技术，用于将信息发送到由周期性帧中的路径ID号或时隙位置指示的路径。 这通过在传输节点和其接收节点之间的双环线之一上建立工作路径来实现，在与工作线相反的方向的环线中建立环形保护路径，并且从 在检测到故障的节点处的相应保护路径的工作路径。 接收节点多路复用工作和保护路径以接收数据。

公开(公告)号：US5400329A

公开(公告)日：1995-03-21

申请号：US51900

申请日：1993-04-27

申请人： Nobuyuki Tokura ,  Yoshio Kajiyama ,  Hideo Tatsuno

发明人： Nobuyuki Tokura ,  Yoshio Kajiyama ,  Hideo Tatsuno

IPC分类号： H04L12/54 ,  H04L12/70 ,  H04J3/16

CPC分类号： H04L12/5602 ,  H04L2012/5636

摘要： Packet transfer is controlled by using an acceleration rate of packet transfers or by using a packet transfer rate acceleration ratio to predict that congestion will occur at a prescribed time in the future. Congestion avoidance in packet integrated networks is thereby achieved in a network having both variable rate terminal nodes and fixed rate terminal nodes. A future packet transfer rate is predicted in a congestion prediction circuit on the basis of a pre-established upper limit for the packet transfer acceleration or acceleration ratio. When it is predicted that the packet transfer rate will exceed a permissible value, a congestion prediction signal is output or a rate increase request indication is deleted. The invention prevents packets from being discarded in the packet network, allows buffer memory capacity of nodes in the network to be decreased, and avoids the generation of new packets when signal congestion is predicted.

摘要翻译： 通过使用分组传送的加速率或通过使用分组传输速率加速比来预测在将来的规定时间内将发生拥塞的分组传送。 因此，在具有可变速率终端节点和固定速率终端节点的网络中实现了分组集成网络中的拥塞避免。 基于分组传送加速度或加速比的预先建立的上限，在拥塞预测电路中预测未来的分组传送速率。 当预测分组传输速率将超过允许值时，输出拥塞预测信号或者删除速率增加请求指示。 本发明防止分组网络中的分组被丢弃，允许减少网络节点的缓冲存储器容量，避免在预测信号拥塞时产生新的分组。

公开(公告)号：US5448390A

公开(公告)日：1995-09-05

申请号：US181089

申请日：1994-01-13

申请人： Toshiyuki Tsuchiya ,  Ikutaro Kobayashi ,  Nobuyuki Tokura

发明人： Toshiyuki Tsuchiya ,  Ikutaro Kobayashi ,  Nobuyuki Tokura

IPC分类号： H04J14/02

CPC分类号： H04J14/02

摘要： Bothway optical communication is carried out through a wavelength division multiplex system between two terminal stations (11a, 12a), each having a two-beam interference type filter (15) coupled with an optical cable (10) for multiplexing and/or de-multiplexing transmitted light and received light. The filter (15) has passbands and attenuation bands having periodic characteristics for the wavelength in the communication wavelength band. The wavelength of the transmitted light is essentially the same as the wavelength of the received light in each terminal station, with a small offset of the two wavelengths less than 5 nm. The oscillation wavelength of the laser (21) for transmission is adjusted so that it coincides with the passband of the filter, which doubles as a reference wavelength of the oscillation wavelength of the laser. Preferably, the two-beam interference type filter (15) is a Mach Zehnder type asymmetrical interferometer having a pair of directional couplers (F1, F2) connected to each other through a pair of optical fibers (f1, f2) so that the period of the passbands and/or the attenuation bands of the filter (15) is adjustable.

摘要翻译： 两路光通信通过两个终端站（11a，12a）之间的波分复用系统进行，每个终端站（11a，12a）具有与用于复用和/或解复用的光缆（10）耦合的双波束干扰型滤波器（15） 透射光并接收光。 滤波器（15）具有对通信波长带中的波长具有周期特性的通带和衰减频带。 透射光的波长基本上与每个终端中的接收光的波长相同，两个波长的偏移小于5nm。 调整用于透射的激光器（21）的振荡波长，使得其与滤波器的通带一致，该滤波器的通带加倍作为激光器的振荡波长的参考波长。 优选地，双光束干涉型滤光器（15）是具有通过一对光纤（f1，f2）彼此连接的一对定向耦合器（F1，F2）的马赫尚德型不对称干涉仪， 过滤器（15）的通带和/或衰减带可调。

公开(公告)号：US5204903A

公开(公告)日：1993-04-20

申请号：US786799

申请日：1991-11-05

申请人： Kenji Okada ,  Fumio Mano ,  Nobuyuki Tokura ,  Kiyomi Kumozaki ,  Noriki Miki

发明人： Kenji Okada ,  Fumio Mano ,  Nobuyuki Tokura ,  Kiyomi Kumozaki ,  Noriki Miki

IPC分类号： H04L9/18

CPC分类号： H04L9/0656 ,  H04L2209/12 ,  H04L2209/34

摘要： In a secure transmission system in which first and second pieces of communication equipment are interconnected via a transmission line, the first communication equipment has a conversion part for encrypting an information signal to be transmitted, through utilization of a received signal and the second communication equipment has an information memory for storing, as a key information, information to be transmitted to the first communication equipment and an inverse conversion part in which the encrypted signal received from the first communication equipment is decoded using the key information read out of the information memory. As the transmission information signal varies, the key information also varies accordingly. Hence, a highly secure transmission system and secure communication equipment can be realized.

公开(公告)号：US5011987A

公开(公告)日：1991-04-30

申请号：US523868

申请日：1990-05-15

申请人： Nobuyuki Tokura ,  Tadayoshi Takefumi ,  Shunichi Matsumoto ,  Yoshihiro Shiokawa

发明人： Nobuyuki Tokura ,  Tadayoshi Takefumi ,  Shunichi Matsumoto ,  Yoshihiro Shiokawa

IPC分类号： C07C51/265 ,  C07C51/44 ,  C07C51/487 ,  C07C63/04

CPC分类号： C07C51/44

摘要： A process for manufacturing high-purity o-toluic acid from a partial oxidation product of o-xylene is disclosed. o-Toluic acid is widely used as a raw material for agricultural chemicals, medicines, polymerization initiators, and the like. Depending on its use, 99% by weight or more purity is demanded for o-toluic acid. Hitherto, o-toluic acid having purity of higher than 99% by weight could not be obtained by fractionation, and purification by fractional crystallization was used. Fractional crystallization is, however, and expensive operation and not only gives a low yield of product but also results a large amount of waste water. The process disclosed herein gives an economical, commercial way to obtain high purity o-toluic acid. In summary, a process for the manufacture of high purity o-toluic acid which comprises: subjecting an oxidation product of o-xylene to distillation to remove therefrom low boiling point components such as unreacted o-xylene and benzoic acid, and high boiling point components, of which the major component is o-methylbenzyl o-toluate, thus obtaining crude o-toluic acid, treating said crude o-toluic acid with ammonia of an amount 1 to 1.2 mol equivalent of o-phthalic acid contained in said crude o-toluic acid, and subjecting the product thus treated to distillation is disclosed.

公开(公告)号：US20080239957A1

公开(公告)日：2008-10-02

申请号：US10562696

申请日：2004-07-07

申请人： Nobuyuki Tokura ,  Keisuke Inoue ,  Haruo Yago

发明人： Nobuyuki Tokura ,  Keisuke Inoue ,  Haruo Yago

IPC分类号： G08C15/00

CPC分类号： H04L47/781 ,  H04L47/70 ,  H04L47/72

摘要： The invention implements inter-terminal transmission with guaranteed capacity based on the single-path configuration function of networks composed of switching hubs with an MAC address learning function and centralized management of transmission capacity, without control over hubs. The capacity to be used by transmission links on a network is stored in advance and transmission capacity along the path to be used is allocated based on requests from terminals, with the allocation removed using a Terminate Request. At such time, by using transmission links and switching hubs with an MAC address learning function, transmission is limited to single-path transmission.

摘要翻译： 本发明基于具有MAC地址学习功能的交换集线器和传输容量的集中管理组成的网络的单路配置功能，实现终端间传输，保证容量，无需对集线器进行控制。 预先存储由网络上的传输链路使用的容量，并根据来自终端的请求分配沿着所使用路径的传输容量，并且使用终止请求去除分配。 此时，通过使用具有MAC地址学习功能的传输链路和交换集线器，传输被限制为单路传输。

公开(公告)号：US5208383A

公开(公告)日：1993-05-04

申请号：US825275

申请日：1992-01-24

申请人： Tadayoshi Takefumi ,  Yoshihiro Shiokawa ,  Shunichi Matsumoto ,  Nobuyuki Tokura

发明人： Tadayoshi Takefumi ,  Yoshihiro Shiokawa ,  Shunichi Matsumoto ,  Nobuyuki Tokura

IPC分类号： C07C45/46

CPC分类号： C07C45/46

摘要： A process for producing an aromatic acylation product from an aromatic compound, an olefin and carbon monoxide, which comprises the steps of:(a) reacting an olefin with carbon monoxide in the presence of hydrogen fluoride and boron trifluoride at a pressure of not more than 100 kg/cm.sup.2 G to prepare an acyl fluoride synthesis solution,(b) allowing the acyl fluoride synthesis solution to absorb boron trifluoride to form a complex of acyl fluoride and boron trifluoride,(c) subjecting an aromatic compound to an acylation reaction with a reaction mixture containing the complex of acyl fluoride and boron trifluoride, obtained in the step (b), to form a complex of boron trifluoride, hydrogen fluoride and an aromatic acylation compound, provided that the amount of the acyl fluoride in the complex of acyl fluoride and boron trifluoride is less than 1 mole per mole of the aromatic compound, and(d) separating the aromatic acylation compound from the complex formed in the step (c) by heating a reaction mixture obtained in the step (c).

摘要翻译： 一种由芳族化合物，烯烃和一氧化碳生产芳族酰化产物的方法，包括以下步骤：（a）在氟化氢和三氟化硼的存在下，使烯烃与一氧化碳在不大于 100kg / cm2G以制备酰基氟合成溶液，（b）使酰基氟合成溶液吸收三氟化硼以形成酰氟和三氟化硼的络合物，（c）使芳族化合物与反应进行酰化反应 含有步骤（b）中得到的酰氟和三氟化硼的络合物的混合物，形成三氟化硼，氟化氢和芳族酰化化合物的络合物，条件是酰基氟络合物中的酰基氟和 三氟化硼每摩尔芳族化合物少于1摩尔，和（d）通过加热芳族酰化化合物与步骤（c）中形成的络合物分离芳族酰化化合物 在步骤（c）中获得的载体混合物。

公开(公告)号：US06654353B1

公开(公告)日：2003-11-25

申请号：US09329369

申请日：1999-06-10

申请人： Nobuyuki Tokura ,  Haruo Yago

发明人： Nobuyuki Tokura ,  Haruo Yago

IPC分类号： H04L1240

CPC分类号： H04L12/437

摘要： It is provided switching means for connecting and disconnecting a link between nodes, so that when a network has a redundant link which forms a loop among nodes—this loop preventing normal connection relationship being maintained—the connection relationship can be made normal by controlling this switching means. Controlling the switching means also achieves rapid recovery from a fault which has occurred in a link between nodes, by utilizing the aforementioned loop to form a route that bypasses the fault.

摘要翻译： 提供了用于连接和断开节点之间的链路的切换装置，使得当网络具有在节点之间形成循环的冗余链路时 - 这种环路阻止正常的连接关系被维持 - 通过控制该切换可以使连接关系正常 手段。 控制切换装置还可以通过利用上述循环来形成绕过故障的路由，从节点之间的链路中发生的故障中快速恢复。

公开(公告)号：US4967011A

公开(公告)日：1990-10-30

申请号：US392514

申请日：1989-08-11

申请人： Nobuyuki Tokura ,  Tadayoshi Takefumi ,  Shunichi Matsumoto ,  Tatsuhiko Yanagawa ,  Yoshihiro Shiokawa ,  Ichiyo Ohtsuka

发明人： Nobuyuki Tokura ,  Tadayoshi Takefumi ,  Shunichi Matsumoto ,  Tatsuhiko Yanagawa ,  Yoshihiro Shiokawa ,  Ichiyo Ohtsuka

IPC分类号： B01J27/12 ,  C07B61/00 ,  C07C45/00 ,  C07C45/46 ,  C07C45/78 ,  C07C45/82 ,  C07C45/83 ,  C07C45/85 ,  C07C49/76 ,  C07C49/782 ,  C07C67/00

CPC分类号： C07C45/85 ,  C07C45/46 ,  C07C45/82 ,  C07C45/83

摘要： The present invention relates to a process for decomposing an aromatic acylated compound.HF-BF.sub.3 complex in preparing an aromatic acylated compound by decomposing an aromatic acylated compound.HF-BF.sub.3 complex obtained by reacting an aromatic compound with an acylating agent in the presence of HF-BF.sub.3 as a catalyst, which comprises subjecting the aromatic acylated compound.HF-BF.sub.3 complex to thermal decomposition in the presence of at least one aromatic hydrocarbon (A.H.) selected from benzene, toluene and chlorobenzene and at least one saturated aliphatic hydrocarbon (S.H.) selected from pentane, hexane and cyclohexane, as a decomposing agent.

公开(公告)号：US4562582A

公开(公告)日：1985-12-31

申请号：US597867

申请日：1984-04-09

申请人： Nobuyuki Tokura ,  Yoshiro Hakamata ,  Kimio Oguchi

发明人： Nobuyuki Tokura ,  Yoshiro Hakamata ,  Kimio Oguchi

IPC分类号： G11B20/14 ,  H04L7/04 ,  H04B9/00 ,  H04B1/62

CPC分类号： G11B20/1419 ,  H04L7/046

摘要： In an apparatus for receiving a burst signal intensity-modulated by a signal obtained by Manchester-code converting each code of an input signal into a pair of codes, the received burst signal is converted by a partial response circuit into an AC signal and then AC-amplified. From the received burst signal is extracted a timing signal of the same frequency as the clock frequency of the Manchester-coded signal. In a decision circuit, the AC-amplified output is decided by the timing signal, through using a decision level close to zero, at the timing of each of former and latter codes of the Manchester-coded pair codes. A coding rule violation is detected in a plurality of successive decision output codes to detect a reception abnormality such as asynchronism and a signal collision. The decision output is decided at the timing of the latter one of the Manchester-coded pair codes, thereby regenerating transmitted information.

摘要翻译： 在用于接收由曼彻斯特编码将输入信号的每个代码转换成一对码的信号进行强度调制的突发信号的装置中，接收到的突发信号由部分响应电路转换成AC信号，然后是AC 放大 从接收的脉冲串信号中提取与曼彻斯特编码信号的时钟频率相同频率的定时信号。 在判定电路中，通过使用曼彻斯特编码对代码的前者和后代码的定时，通过使用接近零的判定级别，由定时信号来决定AC放大输出。 在多个连续判决输出代码中检测到编码规则违规，以检测诸如异步和信号冲突之类的接收异常。 决定输出在曼彻斯特编码对代码中的后一个的定时被确定，从而重新发送所发送的信息。