公开(公告)号：US4759015A

公开(公告)日：1988-07-19

申请号：US911793

申请日：1986-09-26

申请人： Atsushi Takai ,  Kazunori Nakamura ,  Yoshihiro Takiyasu ,  Nagatoshi Usami ,  Mitsuhiro Yamaga

发明人： Atsushi Takai ,  Kazunori Nakamura ,  Yoshihiro Takiyasu ,  Nagatoshi Usami ,  Mitsuhiro Yamaga

IPC分类号： H04L12/18 ,  H04L12/433 ,  H04J3/00 ,  H04J3/16

CPC分类号： H04L12/1868 ,  H04L12/433

摘要： In a network system wherein a plurality of terminal devices communicates with each other via respective node devices over a ring transmission line, a transmitting node device can confirm whether a multicast information transmission has succeeded or failed. The transmitting node device send a response frame after a multicast information frame. A receiving node device relays the multicast information frame and a response frame from the upstream node device to the downstream one when the multicast information has been received successfully, or in case of a failure in receiving the multicast information, sends a response frame to the downstream node device by changing at least part of the response frame from the upstream node device. The transmitting node device can determine from a received response frame if there is one or more of the receiving node devices which cannot receive the multicast information.

摘要翻译： 在多个终端设备经由环形传输线路经由各个节点设备进行通信的网络系统中，发送节点设备可以确认多播信息传输是否成功或失败。 发送节点设备在组播信息帧之后发送响应帧。 当接收到的组播信息成功接收时，接收节点设备将组播信息帧和上游节点设备的响应帧中继到下游节点，否则在接收到组播信息失败的情况下，向下游发送响应帧 通过从上游节点设备改变响应帧的至少一部分来实现节点设备。 发送节点设备可以从接收的响应帧确定是否存在不能接收多播信息的一个或多个接收节点设备。

公开(公告)号：USRE33426E

公开(公告)日：1990-11-06

申请号：US379643

申请日：1989-07-13

申请人： Norihiko Sugimoto ,  Shunji Inada ,  Nagatoshi Usami

发明人： Norihiko Sugimoto ,  Shunji Inada ,  Nagatoshi Usami

IPC分类号： H04L12/46

CPC分类号： H04L12/462

摘要： Multi-network system for transmitting data among a plurality of stations, each of which is connected to one of transmission lines, a plurality of said transmission lines being connected with each other through bridge stations, in which the numbers of the transmission lines, with which in final destination station and the source station are connected respectively, are set as the destination address and the source address in the data frame to be sent; in the case where the bridge station receives a frame of data to be relayed between different transmission lines, the bridge station identifies the relay by the destination address, stores the data frame in a memory means storing data, which should be sent by the bridge station itself; attaches to the data to be relayed a flag, in which the relay indication is set, and to the data not to be relayed a flag, in which the relay indication is not set; and when the data are sent by said station, in the case where the flag attached to the data represents the relay, the data frame which has been received is sent without any change.

公开(公告)号：US4680756A

公开(公告)日：1987-07-14

申请号：US839509

申请日：1986-03-14

申请人： Norihiko Sugimoto ,  Shunji Inada ,  Nagatoshi Usami

发明人： Norihiko Sugimoto ,  Shunji Inada ,  Nagatoshi Usami

IPC分类号： H04L12/46 ,  H04J3/02

CPC分类号： H04L12/462

摘要： Multi-network system for transmitting data among a plurality of stations, each of which is connected to one of transmission lines, a plurality of said transmission lines being connected with each other through bridge stations, in which the numbers of the transmission lines, with which in final destination station and the source station are connected respectively, are set as the destination address and the source address in the data frame to be sent; in the case where the bridge station receives a frame of data to be relayed between different transmission lines, the bridge station identifies the relay by the destination address, stores the data frame in a memory means storing data, which should be sent by the bridge station itself; attaches to the data to be relayed a flag, in which the relay indication is set, and to the data not to be relayed a flag, in which the relay indication is not set; and when the data are sent by said station, in the case where the flag attached to the data represents the relay, the data frame which has been received is sent without any change.

摘要翻译： 多网络系统，用于在多个站之间传输数据，每个站连接到传输线之一，多个所述传输线通过桥接站彼此连接，其中传输线的数量与 在最终目的站和源站分别连接，被设置为要发送的数据帧中的目的地址和源地址; 在桥接站接收到不同传输线之间要中继的数据帧的情况下，桥接站通过目的地地址识别中继，将数据帧存储在存储数据的存储器装置中，该存储装置应由桥接站发送 本身; 附加到要中继的数据，其中设置了中继指示的标志，以及未被中继的数据，其中未设置继电器指示的标志; 并且当由所述站发送数据时，在附加到数据的标志表示中继的情况下，已经接收的数据帧被发送而没有任何改变。