公开(公告)号：US20050141565A1

公开(公告)日：2005-06-30

申请号：US10613000

申请日：2003-07-07

申请人： Thomas Forest ,  Bernd Hedenetz ,  Mathias Rausch ,  Christopher Temple ,  Harald Eisele ,  Bernd Elend ,  Jorn Ungermann ,  Matthias Kuhlewein ,  Ralf Belschner ,  Peter Lohrmann ,  Florian Bogenberger ,  Thomas Wuerz ,  Arnold Millsap ,  Patrick Heuts ,  Robert Hugel ,  Thomas Fuhrer ,  Bernd Muller ,  Florian Hartwich ,  Manfred Zinke ,  Josef Berwanger ,  Christian Ebner ,  Harald Weiler ,  Peter Fuhrmann ,  Anton Schedl ,  Martin Peller

发明人： Thomas Forest ,  Bernd Hedenetz ,  Mathias Rausch ,  Christopher Temple ,  Harald Eisele ,  Bernd Elend ,  Jorn Ungermann ,  Matthias Kuhlewein ,  Ralf Belschner ,  Peter Lohrmann ,  Florian Bogenberger ,  Thomas Wuerz ,  Arnold Millsap ,  Patrick Heuts ,  Robert Hugel ,  Thomas Fuhrer ,  Bernd Muller ,  Florian Hartwich ,  Manfred Zinke ,  Josef Berwanger ,  Christian Ebner ,  Harald Weiler ,  Peter Fuhrmann ,  Anton Schedl ,  Martin Peller

IPC分类号： H03M13/09 ,  H03M13/43 ,  H04J3/06 ,  H04L12/26 ,  H04L12/413 ,  H04L12/417 ,  H04L12/44 ,  H04L12/64

CPC分类号： H04L12/40026 ,  H03M13/09 ,  H03M13/43 ,  H04J3/0652 ,  H04J3/0682 ,  H04J3/0694 ,  H04L7/0331 ,  H04L12/4035 ,  H04L12/417 ,  H04L12/44 ,  H04L12/6418 ,  H04L43/00 ,  H04L43/0847 ,  H04L2012/40241 ,  H04L2012/40273 ,  H04L2012/6435 ,  H04L2012/644 ,  H04L2012/6459

摘要： The invention refers to one of a number of nodes of a communication system. The nodes are connected to a communication media for transmitting data among the nodes. Said one node comprises a communication controller, across which the node is connected to the communication media, and a bus guardian for controlling access of the communication controller to the communication media. In order to provide a cheap but nevertheless reliable way for monitoring the synchronized clock signal of a node of a communication system and in particular for detecting deviations of the synchronized clock signal it is suggested that a synchronized clock signal from the communication controller is made available to the bus guardian, and that the bus guardian comprises means for monitoring the synchronized clock signal using a bus guardian internal clock signal, which is generated by means of an electronic circuit and which is less accurate than the synchronized clock signal to be monitored.

摘要翻译： 本发明涉及通信系统的多个节点之一。 节点连接到通信媒体，用于在节点之间传输数据。 所述一个节点包括通信控制器，所述节点连接到通信介质，以及总线监控器，用于控制通信控制器对通信介质的访问。 为了提供用于监测通信系统的节点的同步时钟信号的便宜但仍然可靠的方式，特别是用于检测同步时钟信号的偏差，建议来自通信控制器的同步时钟信号可用于 总线监护人，并且总线监护人包括使用总线监控内部时钟信号监视同步时钟信号的装置，其通过电子电路产生，并且其精度低于要监视的同步时钟信号。