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Contention Recovery in Start/Stop Communication Protocol Disclosure Number: IPCOM000054019D
Original Publication Date: 1980-Dec-01
Included in the Prior Art Database: 2005-Feb-12

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Girardi, S Kmiecik, S [+details]


When a start stop terminal operates in half duplex transmission mode via a full duplex transmission facility, it is impossible to know whether a contention will occur or not, as both ends - terminal and host - may initiate a transmission simultaneously. The proposed solution prevents data from being lost should a transmission occur in contention mode, since the start-stop line communication protocol does not provide facilities for retransmission.