Power line access data system

Details Power line access data system Power line access data system

H - Electricity

04

M

340/79

H04M 11/04 (2006.01) H04B 3/58 (2006.01) H04Q 9/00 (2006.01)

Patent

CA 1052702

Abstract A two-way communication system is disclosed utilizing power transmission lines as the transmission medium. The system is a multilevel repeater system in which each repeater has a unique address. The lowest level repeaters poll the terminal stations connected thereto in time multiplex. Transmission over the system is in the form of tone codes, each level preferably utilizing a different set of tones from the next higher or lower level.

241109

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