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1. 发明授权

US4746920A Method and apparatus for clock management 失效
标题翻译：时钟管理方法和装置
公开(公告)号：US4746920A
公开(公告)日：1988-05-24
申请号：US845280
申请日：1986-03-28
申请人： Eric P. Nellen , Glenn R. Peterson
发明人： Eric P. Nellen , Glenn R. Peterson
IPC分类号： G06F1/14 , H04Q9/00 , H04J3/06
CPC分类号： G06F1/14
摘要： Disclosed is a method, and apparatus implementing that method, for synchronizing and managing the "system clocks" maintained by each of a number of processor units forming a multiprocessor system. Based on an averaging technique, the method includes creating a synchronization message by an originator processor unit and routing that message to other of the processor units to obtain clock values representative of each of the system clocks of each processor unit. The average clock value is then determined and that average clock value then rerouted to each of the processor units to permit them to update, if necessary, their individual system clocks to the average of all. The method further includes determining the transit times encountered by the various messages so that each processor unit can adjust the average clock value it will use to update or synchronize its system clock to account for such transit times.
摘要翻译：公开了一种实现该方法的方法和装置，用于同步和管理由形成多处理器系统的多个处理器单元中的每一个维护的“系统时钟”。基于平均技术，该方法包括由始发处理器单元创建同步消息，并将该消息路由到其他处理器单元以获得表示每个处理器单元的每个系统时钟的时钟值。然后确定平均时钟值，然后将平均时钟值重新路由到每个处理器单元，以允许它们在必要时将其各自的系统时钟更新为所有处理器的平均值。该方法还包括确定各种消息遇到的传送时间，使得每个处理器单元可以调整其将用于更新或同步其系统时钟以考虑这种传送时间的平均时钟值。

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