Multiplex communications – Wide area network – Packet switching
Patent
1981-03-09
1985-01-01
Safourek, Benedict V.
Multiplex communications
Wide area network
Packet switching
3408255, H04J 602
Patent
active
044919468
ABSTRACT:
A data communication system is disclosed that utilizes a synchronized serial bus for communication between multiple stations connected to the bus. A token is employed such that when owned by a station it allows that station to transmit high level messages over the bus and command other stations to transmit high level messages to it if required by the token owner. Fundamental events called primitives are perceived by stations. Each station capable of token ownership embodies the same set of rules, the rules in turn defining the circumstances when perceived events cause a station to change from one state to another.
Fundamental sets of rules, or modules, are used in the communication system to achieve a system for the automatic generation of a token list of stations with periodic ownership of the token, as well as for expansion or contraction of this token list. In addition, automatic change in the token pass handshake protocol is described.
The communication system allows bus interconnection to stations having no potential token access, with communication control provided by master stations which have token ownership capability.
REFERENCES:
patent: 3296596 (1967-01-01), Yagusic et al.
patent: 3517130 (1970-06-01), Rynders
patent: 3522381 (1970-07-01), Feder
patent: 3564145 (1971-02-01), Deutsch et al.
patent: 3597549 (1971-08-01), Farmer et al.
patent: 3603739 (1971-09-01), Edson
patent: 3646273 (1972-02-01), Nadir et al.
patent: 3646274 (1972-02-01), Nadir et al.
patent: 3697959 (1972-10-01), Abramson et al.
patent: 3701109 (1972-10-01), Peters
patent: 3732543 (1973-05-01), Rocher et al.
patent: 3742148 (1973-06-01), Ledeen et al.
patent: 3749845 (1973-07-01), Fraser
patent: 3752921 (1973-08-01), Audretsch et al.
patent: 3787627 (1974-01-01), Abramson et al.
patent: 3790717 (1974-02-01), Abramson et al.
patent: 3796992 (1974-03-01), Nakamura et al.
patent: 3803405 (1974-04-01), Ohasorge et al.
patent: 3855422 (1974-12-01), Cadiou et al.
patent: 3863220 (1975-01-01), Osawa et al.
patent: 3898373 (1975-08-01), Walsh
patent: 3911218 (1975-10-01), Suzuki et al.
patent: 3919483 (1975-11-01), Gindi
patent: 3932841 (1976-01-01), Deerfield et al.
patent: 3963870 (1976-06-01), Couder et al.
patent: 3969586 (1976-07-01), Wakamatsu
patent: 3970994 (1976-07-01), Jenny
patent: 3985962 (1976-10-01), Jones
patent: 3988545 (1976-10-01), Kuemmerle et al.
patent: 4017688 (1977-04-01), Callens et al.
patent: 4019176 (1977-04-01), Cour et al.
patent: 4024501 (1977-05-01), Herring et al.
patent: 4032893 (1977-06-01), Moran
patent: 4052566 (1977-10-01), MacKay
patent: 4058681 (1977-11-01), Imaizumi et al.
patent: 4074232 (1978-02-01), Otomo et al.
patent: 4079209 (1978-03-01), Schwerdtel
patent: 4081612 (1978-03-01), Hafner
patent: 4093823 (1978-06-01), Chu
patent: 4096355 (1978-06-01), Rothauser et al.
patent: 4124776 (1978-11-01), Nocker
patent: 4137522 (1979-01-01), Stein
patent: 4155115 (1979-05-01), Wilske
patent: 4156106 (1979-05-01), Bumgardner
patent: 4161786 (1979-07-01), Hopkins
patent: 4166198 (1979-08-01), Mattern
patent: 4199662 (1980-04-01), Lowe, Jr.
patent: 4199663 (1980-04-01), Herzog
Control Engineering, vol. 27, No. 9, Sep. 1980, M. J. McGowan: "Process Bus Protocol Orchestrates Distributed or Centralized Control", pp. 129-132.
Electronic Design, vol. 29, No. 8, Apr. 16, 1981, Allan: "Local-Net Architecture, Protocol Issues Heating Up", pp. 91 to 98, 100 and 102.
Allen Bruce S.
Bobzin Jeffery J.
Kryskow, Jr. J. Michael
Gould Inc.
Safourek Benedict V.
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