Timed token ring

Communications: electrical – Continuously variable indicating – With meter reading

Patent

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Details

3408252, 370 86, 375107, H04Q 900

Patent

active

044545088

ABSTRACT:
Disclosed is a timed token protocol which may be implemented either on a physical loop or a logical loop superimposed on a physical bus, the loop interconnecting a plurality of stations to form a network. Each station on the network may be of the same priority level, or may be of one or both of two priority levels.
In the single priority level network, a station can transmit information upon the receipt of a write token if the time since the previous receipt of a write token is less than a preset amount of time, the difference between the observed write token rotation time and the preset amount of time representing the amount of unused capacity on the previous rotation of the write token.

REFERENCES:
patent: 4001504 (1977-01-01), Hendrickson
patent: 4103288 (1978-07-01), Westman
patent: 4161719 (1979-07-01), Parikh et al.
patent: 4237553 (1980-12-01), Larsen
patent: 4251880 (1981-02-01), Baugh et al.
patent: 4309371 (1975-09-01), Colton et al.
patent: 4316284 (1982-02-01), Howsan
patent: 4320520 (1982-03-01), Graham
patent: 4335426 (1982-06-01), Maxwell et al.
patent: 4344180 (1982-08-01), Cummiskey
patent: 4346440 (1982-08-01), Kyu
patent: 4404557 (1983-09-01), Grow
"A Reliable Token-Ring System for Local-Area Communication", by Werner Bux et al., appearing in NTC Record-1981, National Telecommunications Conference, New Orleans, LA, Nov. 29-Dec. 3, 1981, pp. A2.2.1-A2.2.6.

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