Multiplex communications – Wide area network – Packet switching
Patent
1983-05-02
1985-08-13
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
34082505, H04J 300
Patent
active
045354499
ABSTRACT:
A method for use in a local loop network comprising a plurality of stations which are distributed along a bus, each station being connected to the bus via a coupler which is inserted in the bus. The time-locking method for these stations comprises a transmission phase during which a looping unit which is also inserted in the bus transmits a frame (transmission frame) which consists of a synchronization word and one or more slots which initially do not contain data and which correspond to the time position occupied by each of the stations, a receiving phase during which the demodulation of the transmission frame by the master clock of the looping unit is performed after the retransmission in the form of a frame which is referred to as the receiving frame, of this frame to the coupler of each of the successive stations and, after the receiving phase, new transmission and receiving phases until the insertion of the data on the bus by each station during a transmission phase takes place with the desired accuracy.
REFERENCES:
patent: 3940561 (1976-02-01), Heinze et al.
patent: 4002842 (1977-01-01), Meyr et al.
patent: 4430699 (1984-02-01), Segarra et al.
patent: 4435705 (1984-03-01), Stevens
Cannon, Jr. James J.
Haken Jack E.
Olms Douglas W.
Rokoff Kenneth I.
U.S. Philips Corporation
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