Method and apparatus for the two-way transmission of pulses

Details Method and apparatus for the two-way transmission of pulses Method and apparatus for the two-way transmission of pulses

1976-08-25

1978-06-27

Robinson, Thomas A.

Telegraphy

Systems

Printing

178 50, 340310R, H04M 1100, H04H 114, H04L 500

Patent

active

040976920

ABSTRACT:
In a method and apparatus for the two-way transmission of pulses between a plurality of out-stations generally connected to a common power supply network and at least one control unit, the data is applied to the power supply network using pulse code modulation so that the power supply network serves as a data bus bar between the out-stations and the control unit. A multiplexing of the data applied to the network permits individual communication between an out-station and the control unit during an assigned time slot with the power supply frequency being used for synchronizing the timing of the multiplex system.

REFERENCES:
patent: 3458657 (1969-07-01), Lester et al.
patent: 3720790 (1973-03-01), Watson et al.
patent: 3806876 (1974-04-01), Kniel et al.
patent: 4007458 (1977-02-01), Hollabaugh

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