Data network employing a single transmission bus for overlapping

Details Data network employing a single transmission bus for overlapping Data network employing a single transmission bus for overlapping

1980-09-15

1982-08-03

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

370 85, H04Q 900

Patent

active

043429955

ABSTRACT:
This disclosure relates to a network of stations having a single transmission bus. A bus assignment control line is daisy-chained to all of the stations to form a closed loop such that an assignment signal will circulate through the loop and return to the originating station after each station has been given an equal chance to be serviced. Once the bus is assigned to a station, data is transmitted over it and the receiving station returns an acknowledgment signal over a separate acknowledgment line common to all stations. The station that sent the transmission will accept acknowledgment signals only during a finite period of time after its own transmission so as not to be interrupted by other acknowledgment signals at a later time.

REFERENCES:
patent: 3978451 (1976-08-01), Ito et al.
patent: 4019172 (1977-04-01), Srodes
patent: 4148011 (1979-04-01), McLagan et al.
patent: 4212080 (1980-07-01), Milliken

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