Dual loop type data highway system

Details Dual loop type data highway system Dual loop type data highway system

1980-12-12

1983-11-15

Swann, III, Glen R.

Multiplex communications

Wide area network

Packet switching

179 18EA, 370 29, 370 37, H04J 308

Patent

active

044160089

ABSTRACT:
A dual loop type data highway system comprises a data highway having at least two loops for data transmission and reception, a plurality of data transmitting/receiving stations serially connected to the data highway and a control station serially connected to the data highway. The data transmitting/receiving stations each have means for detecting the beginning of a transmission cycle, one for each of the loops, and the control station has, one for each of the loops, means for detecting the end of the transmission cycle and means for permitting the transmission/reception of data between specified two of the data transmitting/receiving stations during the transmission cycle by polling, whereby an effective transmission rate is increased without considerable increase of hardware.

REFERENCES:
patent: 3652798 (1972-03-01), McNeilly et al.
patent: 3732374 (1973-05-01), Rocher et al.

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