Multiplex communications – Wide area network – Packet switching
Patent
1985-10-22
1987-08-04
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 89, H04J 300
Patent
active
046851054
ABSTRACT:
This invention relates to a time-division transmission method for a plurality of terminals connected to a looped transmission line, in which a plurality of slots being provided with regions, where three kinds: "Free", "Busy" or "Neutral" of access control information are set, are made to circulate on the transmission line, so that when the transmission apparatus at the terminal having data to be transmitted receives a slot of "Free", a necessary number of subsequent slots to the slot of "Free" are continuously used to carry out data transmission, the access control information at the slot in use is changed to "Busy", the access control information of a slot at the head of the slots not used is set to "Free", and an access control information of a slot subsequent to the above slot is set to "Neutral". Such method is adopted to increase a net amount of the data to be transmitted and reduce the processing for division and assembly of the data to be transmitted, thereby enabling the transmission efficiency to be improved.
REFERENCES:
patent: 4277843 (1981-07-01), Duquenne et al.
patent: 4320502 (1982-03-01), deVeer
patent: 4482999 (1984-11-01), Janson et al.
patent: 4528661 (1985-07-01), Bahr et al.
Horiguchi Akira
Ishizaka Michihiro
Kira Hirofumi
Kooi Yuji
Ota Takahisa
Kuntz Curtis
Mitsubishi Denki & Kabushiki Kaisha
Olms Douglas W.
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