Dual master implied token communication system

Details Dual master implied token communication system Dual master implied token communication system

1990-10-29

1992-06-16

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

34082505, 370 853, 370 8515, H04Q 900, H04L 700

Patent

active

051227940

ABSTRACT:
A pair of master units share a common communication link to communicate with one or more slave units. Each slave unit transmits a message only in response to a message from one of the master units. When an initial transmission request is received by a master unit, it monitors the communication link and only initiates transmission of a message when the link has been quiet for a link quiet time period. After completing a transmission of a message, the master unit waits a link grant time period before transmitting again to permit the other master unit an opportunity to transmit a message if it desires. Synchronization of the two master units, therefore, is achieved quickly and with minimum overhead.

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