公开(公告)号：US07583704B1

公开(公告)日：2009-09-01

申请号：US10459136

申请日：2003-06-10

申请人： Carl Walker ,  David Fox ,  Achot Matevossian ,  Michael Healy

发明人： Carl Walker ,  David Fox ,  Achot Matevossian ,  Michael Healy

IPC分类号： H04J3/06

CPC分类号： H04J3/0644 ,  H04J3/0664

摘要： Methods and devices are provided for allowing upstream and downstream cable modem termination systems to be located in different physical locations. According to some embodiments of the invention, a downstream CMTS is located at a head end of a cable network and an upstream CMTS is located in each of a plurality of hubs in a cable network. Such a configuration provides more flexibility than prior art systems, especially when much of the traffic passing through the downstream CMTS is broadcast traffic, such as IP video, that will be passed to multiple hubs. Such configurations are more economical because they do not require every hub to have its own downstream CMTS. In preferred embodiments, the upstream and downstream functions are synchronized using a Global Positioning System (“GPS”) reference source.

摘要翻译： 提供了用于允许上游和下游电缆调制解调器端接系统位于不同物理位置的方法和设备。 根据本发明的一些实施例，下游CMTS位于电缆网络的头端，并且上游CMTS位于电缆网络中的多个集线器的每一个中。 这样的配置提供比现有技术系统更多的灵活性，特别是当通过下游CMTS的大部分业务是将被传递到多个集线器的广播业务（例如IP视频）时。 这样的配置更经济，因为它们不需要每个集线器具有其自己的下游CMTS。 在优选实施例中，使用全球定位系统（“GPS”）参考源来同步上游和下游功能。

公开(公告)号：US20060269379A1

公开(公告)日：2006-11-30

申请号：US11141696

申请日：2005-05-31

申请人： Bobby Orr ,  Robert King ,  Carl Walker

发明人： Bobby Orr ,  Robert King ,  Carl Walker

IPC分类号： B61D3/16

CPC分类号： B60P3/08 ,  B60P3/07 ,  B62D21/20 ,  B62D33/02 ,  B62D53/061

摘要： A chassis shipping unit for over-the-road trailer chassis. The shipping unit includes a base platform for supporting first and second trailer chassis; first tandem leg structure mounted to the base platform for extending upward between the leading and trailing wheels of the first trailer chassis; and second tandem leg structure mounted to the base platform for extending upward between the leading and trailing wheels of a second trailer chassis with the second trailer chassis supported above the first trailer chassis.

摘要翻译： 用于越野拖车底盘的底盘运输单元。 运输单元包括用于支撑第一和第二拖车底盘的基座平台; 第一串联腿结构安装到基座平台，用于在第一拖车底盘的前轮和后轮之间向上延伸; 以及第二串联腿结构，其安装到基座平台，用于在第二拖车底盘的前轮和后轮之间向上延伸，其中第二拖车底架支撑在第一拖车底盘上方。