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    • 13. 发明申请
    • Multicast packet control apparatus
    • 组播包控制装置
    • US20070165633A1
    • 2007-07-19
    • US11508240
    • 2006-08-23
    • Kozo IkegamiTakashi YokoyamaMinoru NagaiYoshitaka SakamotoShigehiro Onizawa
    • Kozo IkegamiTakashi YokoyamaMinoru NagaiYoshitaka SakamotoShigehiro Onizawa
    • H04L12/56
    • H04L12/1881
    • When multicast distribution is performed on a network where a point-to-point connection is made between user terminals and a multicast router, the multicast router is protected from load due to response reports, join requests, or leave statements sent from the user terminals simultaneously. If the user terminals send response reports simultaneously, a Layer 2 switch disposed between the user terminals and the multicast router limits response reports sent to the multicast router. The Layer 2 switch prevents response reports sent from the same user terminal from being discarded consecutively, by sending a response report sent from the same user terminal to the multicast router 200 with priority in the next join confirmation event. If the user terminals send join requests or leave statements simultaneously, the Layer 2 switch limits the join requests or leave statements sent to the multicast router 200 in the same manner. The Layer 2 switch further enlarges a transmission buffer thereof at the multicast router side, so that the packets can be stored in the buffer.
    • 当在用户终端和组播路由器之间进行点对点连接的网络上执行组播分发时,由于响应报告,加入请求或者从用户终端同时发送的离开语句,组播路由器受到保护而受到保护 。 如果用户终端同时发送响应报告,则设置在用户终端和组播路由器之间的二层交换机限制发送给组播路由器的响应报告。 第二层交换机防止从同一用户终端发送的响应报告被连续丢弃,通过在下一个加入确认事件中以优先级的方式发送从同一用户终端发送到组播路由器200的响应报告。 如果用户终端同时发送加入请求或离开语句,则二层交换机以相同的方式限制加入请求或发送到组播路由器200的语句。 二层交换机进一步放大了组播路由器侧的发送缓冲区,使得分组可以存储在缓冲器中。
    • 16. 发明授权
    • Multicast packet routing arrangements for group-membership handling
    • 用于组成员处理的组播包路由布置
    • US07769008B2
    • 2010-08-03
    • US11155723
    • 2005-06-20
    • Yoshitaka SakamotoHisao TaguchiMigaku OtaShinsuke Shimizu
    • Yoshitaka SakamotoHisao TaguchiMigaku OtaShinsuke Shimizu
    • H04L12/28
    • H04L12/185H04L45/00H04L45/16H04L49/201
    • A packet routing arrangement, when receiving a request to join or leave a multicast group from a host unregistered to that group, a response is sent exclusively to the unregistered host. In the packet routing arrangement, when receiving a request packet from a host to join or leave a group, including the identifier of the group, it is determined whether the source host of the packet is registered to that group; and, if it is not registered, the first group identifier is changed to a second group identifier assigned to another delivery server delivering information to the other unregistered host and the packet is transferred to this other delivery server. When receiving a packet containing certain information from this delivery server, the second group identifier included in the received packet is changed to the first group identifier and the packet is transmitted to the unregistered host.
    • 分组路由布置当从未登记到该组的主机接收到加入或离开多播组的请求时,响应被专门发送到未注册的主机。 在分组路由布置中,当从主机接收包括组的标识符的组合的请求分组时,确定分组的源主机是否被注册到该组; 并且如果未注册,则将第一组标识符改变为分配给另一个递送服务器的第二组标识符,以向另一个未注册的主机传送信息,并且该分组被传送到该另一个传送服务器。 当从该发送服务器接收到包含某些信息的分组时,包含在接收到的分组中的第二组标识符被改变为第一组标识符,并且该分组被发送到未注册主机。
    • 17. 发明授权
    • Multicast packet control apparatus
    • 组播包控制装置
    • US07532624B2
    • 2009-05-12
    • US11508240
    • 2006-08-23
    • Kozo IkegamiTakashi YokoyamaMinoru NagaiYoshitaka SakamotoShigehiro Onizawa
    • Kozo IkegamiTakashi YokoyamaMinoru NagaiYoshitaka SakamotoShigehiro Onizawa
    • H04L12/28
    • H04L12/1881
    • When multicast distribution is performed on a network where a point-to-point connection is made between user terminals and a multicast router, the multicast router is protected from load due to response reports, join requests, or leave statements sent from the user terminals simultaneously. If the user terminals send response reports simultaneously, a Layer 2 switch disposed between the user terminals and the multicast router limits response reports sent to the multicast router. The Layer 2 switch prevents response reports sent from the same user terminal from being discarded consecutively, by sending a response report sent from the same user terminal to the multicast router 200 with priority in the next join confirmation event. If the user terminals send join requests or leave statements simultaneously, the Layer 2 switch limits the join requests or leave statements sent to the multicast router 200 in the same manner. The Layer 2 switch further enlarges a transmission buffer thereof at the multicast router side, so that the packets can be stored in the buffer.
    • 当在用户终端和组播路由器之间进行点对点连接的网络上执行组播分发时,由于响应报告,加入请求或者从用户终端同时发送的离开语句,组播路由器受到保护而受到保护 。 如果用户终端同时发送响应报告,则设置在用户终端和组播路由器之间的二层交换机限制发送给组播路由器的响应报告。 第二层交换机防止从同一用户终端发送的响应报告被连续丢弃,通过在下一个加入确认事件中以优先级的方式发送从同一用户终端发送到组播路由器200的响应报告。 如果用户终端同时发送加入请求或离开语句,则二层交换机以相同的方式限制加入请求或发送到组播路由器200的语句。 二层交换机进一步放大了组播路由器侧的发送缓冲区,使得分组可以存储在缓冲器中。
    • 19. 发明授权
    • Welding gun
    • 焊枪
    • US5990442A
    • 1999-11-23
    • US948023
    • 1997-10-09
    • Kazutsugu SuitaSeiji SuzukiYoshitaka Sakamoto
    • Kazutsugu SuitaSeiji SuzukiYoshitaka Sakamoto
    • B23K11/30B23K11/11B23K11/31
    • B23K11/312
    • A welding gun includes an actuator and welding tips. The actuator includes a stator coupled to a welding robot and a rotor rotatable relative to the stator about an axis of the actuator. The stator includes an axially extending portion and at least one circumferentially extending arm. The rotor includes an axially extending portion and at least one circumferentially extending arm. The welding tips are coupled to an end of the circumferentially extending arm of the stator and an end of the circumferentially extending arm of the rotor. Lengths of the axially extending portion of the stator and the axially extending portion of the rotor can be determined to any length so long as strength and rigidity are assured.
    • 焊枪包括致动器和焊接尖端。 致动器包括联接到焊接机器人的定子和绕致动器的轴线相对于定子旋转的转子。 定子包括轴向延伸部分和至少一个周向延伸的臂。 转子包括轴向延伸部分和至少一个周向延伸的臂。 焊接尖端联接到定子的周向延伸臂的端部和转子的周向延伸的臂的端部。 只要确保强度和刚度,定子的轴向延伸部分的长度和转子的轴向延伸部分的长度可以确定为任何长度。