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    • 1. 发明授权
    • Network-based service for the repair of IP multicast sessions
    • 基于网络的服务,用于修复IP组播会话
    • US07590889B1
    • 2009-09-15
    • US10874591
    • 2004-06-23
    • Nicholas Frank MaxemchukDavid McManamonDavid Hilton ShurAleksandr Zelezniak
    • Nicholas Frank MaxemchukDavid McManamonDavid Hilton ShurAleksandr Zelezniak
    • G06F11/00
    • H04L12/1868G06F11/1443H04L12/1863H04L12/1886H04L43/0847
    • A system and method are disclosed for the repair of IP multicast sessions. A repair server polls multiple transmit servers to accumulate as many of the packets missing from the multicast session as possible. A network includes a source of multicast packets in a multicast session and a plurality of multicast recipients in that session. A repair server in the network provides the packets it receives to the recipients. The repair server includes a missing packet detector. There is a plurality of retransmit servers in the network buffering portions of the packets they respectively receive during the session. The repair server maintains an ordered list of the retransmit servers that are most likely to have buffered copies of packets missing from the session. When the repair server detects that there are packets missing from the session it has received, it uses the ordered list to sequentially request the missing packets from respective ones of the plurality of retransmit servers.
    • 公开了用于修复IP多播会话的系统和方法。 修复服务器轮询多个发送服务器以尽可能多地累积多播会话丢失的数据包。 网络包括多播会话中的多播分组源和该会话中的多个多播接收者。 网络中的修复服务器将其接收的数据包提供给接收者。 修复服务器包括丢失的分组检测器。 在会话期间它们分别接收的分组的网络缓冲部分中存在多个重传服务器。 修复服务器维护最可能具有从会话丢失的数据包的缓冲副本的重新发送服务器的有序列表。 当修复服务器检测到它已经接收到的会话中丢失了数据包时,它使用有序列表来顺序地请求来自多个重传服务器中的相应数据包的丢失数据包。
    • 2. 发明授权
    • Network-based service for the repair of IP multicast sessions
    • 基于网络的服务,用于修复IP组播会话
    • US06782490B2
    • 2004-08-24
    • US10330837
    • 2002-12-27
    • Nicholas Frank MaxemchukDavid McManamonDavid Hilton ShurAleksandr Zelezniak
    • Nicholas Frank MaxemchukDavid McManamonDavid Hilton ShurAleksandr Zelezniak
    • G06F1100
    • H04L12/1868G06F11/1443H04L12/1863H04L12/1886H04L43/0847
    • A system and method are disclosed for the repair of IP multicast sessions. A repair server polls multiple transmit servers to accumulate as many of the packets missing from the multicast session as possible. A network includes a source of multicast packets in a multicast session and a plurality of multicast recipients in that session. A repair server in the network provides the packets it receives to the recipients. The repair server includes a missing packet detector. There is a plurality of retransmit servers in the network buffering portions of the packets they respectively receive during the session. The repair server maintains an ordered list of the retransmit servers that are most likely to have buffered copies of packets missing from the session. When the repair server detects that there are packets missing from the session it has received, it uses the ordered list to sequentially request the missing packets from respective ones of the plurality of retransmit servers.
    • 公开了用于修复IP多播会话的系统和方法。 修复服务器轮询多个发送服务器以尽可能多地累积多播会话丢失的数据包。 网络包括多播会话中的多播分组源和该会话中的多个多播接收者。 网络中的修复服务器将其接收的数据包提供给接收者。 修复服务器包括丢失的分组检测器。 在会话期间它们分别接收的分组的网络缓冲部分中存在多个重传服务器。 修复服务器维护最可能具有从会话丢失的数据包的缓冲副本的重新发送服务器的有序列表。 当修复服务器检测到它已经接收到的会话中丢失了数据包时,它使用有序列表来顺序地请求来自多个重传服务器中的相应数据包的丢失数据包。
    • 5. 发明授权
    • Printing machines
    • 印刷机
    • US5855171A
    • 1999-01-05
    • US964365
    • 1997-11-04
    • David McManamonStephen McManamon
    • David McManamonStephen McManamon
    • B41F31/02B41F31/08B41F35/00B41F35/04
    • B41F35/00B41F31/027B41F31/08
    • A method and apparatus are proposed for cleaning the ink chamber (27) of the ink rail (11) of a printing machine ink supply system and from whch ink is delivered to an ink roller through a multiplicity of side-by-side stepped feed holes (29) in the rail (11) , the method and apparatus utilising a plug (41) freely slidable within the chamber (27) and adapted to purge the chamber (27) of ink present in advance of the plug (41) on its movement longitudinally of the chamber. In analogous manner the plug (41) may be used to effect a colour change as between ink sources provided at opposite ends of the rail. (FIG. 2).
    • 提出了一种用于清洁印刷机油墨供应系统的墨水导轨(11)的墨水室(27)的方法和装置,并且通过多个并排阶梯式进料孔将墨水输送到墨水辊 (11)中的(29)的方法和装置,所述方法和装置利用在所述腔室(27)内可自由滑动的塞子(41),并且适于将其中存在于插塞(41)之前的墨水的腔室 腔室纵向移动。 以类似的方式,塞子(41)可以用于实现颜色变化,就像设在轨道的相对端处的墨源一样。 (图2)。