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专利名称：Method and apparatus for synchronizing the
timing subsystems of the physical modulesof a local area network
发明人：Kirk, David L.申请号：EP85116059.8申请日：19851213公开号：EP0185348B1公开日：19900711
摘要：For synchronizing the timing subsystems (48) of the modules (12) of adistributed local area network (10) to a desired degree of accuracy the Module CentralProcessing Unit (MCPU) (32) of each module (12) includes a digital timing subsystem (48)which, in response to the clock signals from the source thereof (44), produces a finetiming, a synchronization, and a real time timing signal. The real time timing signals occurat one second intervals. Each of the timing subsystems (48) also produces the currenttime in seconds, the number of fine resolution and synchronization timing signals
produced since the most recently produced real time timing signal, as well as the numberof fine resolution timing signals produced since the last synchronization timing signal wasproduced. Two of the timing subsystems (48) of the network (10) are provided with drivercircuits (50) which permit them to transmit a timing frame (60) respectively over thecables (14A,14B) of the network bus (14). One of the timing subsystems is designated asthe master and the other as the slave (Figure 2).
申请人：HONEYWELL INC.
代理机构：Rentzsch, Heinz, Dipl.-Ing.
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