Dual master implied token communication system

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

1990-11-13

1992-11-24

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

Plural transmitters

34087038, 34082507, 34082552, 370 941, H04Q 900, G08B 2100

Patent

active

051666782

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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"Motorola M6800 Microprocessor Course Book", pp. ACIA-3, 66, 67.
Martin, James, "Telecommunications and the Computer", pp. 223, 238-241 and 581-583.

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