Symmetry type loop communication system
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United States of America Patent
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May 14, 1985
Grant Date -
N/A
app pub date -
Aug 24, 1981
filing date -
Sep 3, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A symmetric type loop communication system having no master station, in which a plurality of control stations connected to a loop communication path each have a timer with its set time different from each other control station. The timer of a station is reset when a transmission right signal (GA signal) from another control station is received. On the other hand, a GA signal is sent out to another control station together with a message frame when the timer thereof has counted to a predetermined state.
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