Apparatus and method for controlling data communications having

Details Apparatus and method for controlling data communications having Apparatus and method for controlling data communications having

1997-03-17

1998-07-07

Tong, Nina

Communications: electrical

Systems

Selsyn type

34031001, 34031004, 34031008, 370344, 370480, 375222, 375354, H04M 1104

Patent

active

057775443

ABSTRACT:
An apparatus and methods are provided for controlling data communications across power lines. The apparatus preferably has a power line interface for interfacing with a power line so as to detect both a wide bandwidth data communications protocol being initiated across the power line and a narrow bandwidth data communications protocol being initiated across the power line synchronously with the power line mains frequency and so as to initiate either a wide bandwidth data communications protocol onto the power line or a narrow bandwidth data communications protocol onto the power line synchronously with the power line mains frequency. The narrow bandwidth of the narrow bandwidth data communications protocol preferably falls within the wide bandwidth of the wide bandwidth data communications protocol. An input wide and narrow bandwidth protocol receiver is positioned responsive to the power line interface for receiving either the wide bandwidth protocol or the narrow bandwidth protocol. An output wide and narrow bandwidth protocol transmitter is connected to the power line interface for transmitting a selected one of either the wide bandwidth protocol or the narrow bandwidth protocol. A protocol controller is positioned responsive to the input protocol receiver and the output protocol transmitter for controlling the receipt of and the transmission of wide bandwidth and narrow bandwidth data communications protocols.

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